Update to bsnes v063 release.

Time for another (hopefully) stable release. The changelog has all updates since the last stable release.
Most notably, this release features substantial accuracy improvements all around. Almost all of them represent brand new findings never before seen in any SNES emulator.
Changelog:
    - fixed off-by-one buffer size issue in S-PPU RTO calculations [PiCiJi]
    - added XML parser
    - added XML-based memory mapping system
    - moved header-based memory mapping code into snesreader library
    - added some linker flags for Fedora [belegdol]
    - added cheat code database; with codes for over 1,500 games [mightymo]
    - fixed a bug where S-CPU IRQs were being tested one cycle early on direct page indexed read opcodes
    - added global cheat system enable/disable checkbox to cheat code editor
    - fixed bug in overflow calculation of S-CPU ADC and SBC opcodes in BCD mode [blargg]
    - emulated the S-CPU ALU MUL and DIV hardware delays with partial result calculation steps [blargg]
    - controller port read now returns real-time results of B button when strobe latch is raised
    - major improvements to emulation of the S-SMP TEST register [blargg, byuu]
    - fixed DSP2 memory map [Overload]
    - "Apply Patch" checkbox will now scan UPS patch folder if one is set in the paths section
    - fixed S-CPU TSC negative flag calculation in emulation mode [address]
    - added "make uninstall" command to Makefile for Linux users
    - S-CPU (H)DMA now updates the S-CPU MDR; fixes a freeze in Speedy Gonzales - Stage 6-1
    - very substantial code cleanups and optimizations as a result of moving from C++98 to C++0x

pixelshaders/Curvature/fragment

@@ -0,0 +1,17 @@
+//CRT curvature shader
+//license: GPL
+//author: DOLLS
+
+uniform sampler2D rubyTexture;
+
+#define distortion 0.2
+
+vec2 barrelDistortion(vec2 coord) {
+  vec2 cc = coord - 0.5;
+  float dist = dot(cc, cc);
+  return coord + cc * (dist + distortion * dist * dist) * distortion;
+}
+
+void main(void) {
+  gl_FragColor = texture2D(rubyTexture, barrelDistortion(gl_TexCoord[0].xy));
+}

pixelshaders/HDRTV/fragment

@@ -0,0 +1,14 @@
+//HDRTV GLSL shader
+//license: GPL
+//original version by SimoneT
+//ruby port by byuu
+
+uniform sampler2D rubyTexture;
+
+void main(void) {   
+  vec4 rgb = texture2D(rubyTexture, gl_TexCoord[0].xy);
+  vec4 intens = smoothstep(0.2,0.8,rgb) + normalize(vec4(rgb.xyz, 1.0));
+
+  if(fract(gl_FragCoord.y * 0.5) > 0.5) intens = rgb * 0.8;
+  gl_FragColor = intens;
+}

pixelshaders/HDRTV/vertex

@@ -0,0 +1,9 @@
+//HDRTV GLSL shader
+//license: GPL
+//original version by SimoneT
+//ruby port by byuu
+
+void main(void) {
+  gl_Position = ftransform();
+  gl_TexCoord[0] = gl_MultiTexCoord0;
+}

pixelshaders/HLSL/sepia.fx

@@ -0,0 +1,25 @@
+texture rubyTexture;
+
+float4 vec;
+
+sampler s0 = sampler_state { texture = <rubyTexture>; };
+float3 LightColor = { 1.0, 0.7, 0.5 };
+float3 DarkColor = { 0.2, 0.05, 0.0 };
+
+float4 DiffColorPass(in float2 Tex : TEXCOORD0) : COLOR0
+{
+  vec.x = 0.5;
+  vec.y = 1.0;
+  float3 scnColor = LightColor * tex2D(s0, Tex).xyz;
+  float3 grayXfer = float3(0.3, 0.59, 0.11);
+  float gray = dot(grayXfer, scnColor);
+  float3 muted = lerp(scnColor, gray.xxx, vec.x);
+  float3 sepia = lerp(DarkColor, LightColor, gray);
+  float3 result = lerp(muted, sepia, vec.y);
+  return float4(result, 1);
+}
+
+Technique T0
+{
+  pass p0 { PixelShader = compile ps_2_0 DiffColorPass(); }
+}

pixelshaders/HQ2x/fragment

@@ -0,0 +1,49 @@
+//HQ2x GLSL shader
+//license: GPL
+//original version by guest(r)
+//ruby port by byuu
+
+uniform sampler2D rubyTexture;
+
+const float mx = 0.325;      // start smoothing wt.
+const float k = -0.250;      // wt. decrease factor
+const float max_w = 0.25;    // max filter weigth
+const float min_w =-0.05;    // min filter weigth
+const float lum_add = 0.25;  // effects smoothing
+
+void main() {
+  vec3 c00 = texture2D(rubyTexture, gl_TexCoord[1].xy).xyz; 
+  vec3 c10 = texture2D(rubyTexture, gl_TexCoord[1].zw).xyz; 
+  vec3 c20 = texture2D(rubyTexture, gl_TexCoord[2].xy).xyz; 
+  vec3 c01 = texture2D(rubyTexture, gl_TexCoord[4].zw).xyz; 
+  vec3 c11 = texture2D(rubyTexture, gl_TexCoord[0].xy).xyz; 
+  vec3 c21 = texture2D(rubyTexture, gl_TexCoord[2].zw).xyz; 
+  vec3 c02 = texture2D(rubyTexture, gl_TexCoord[4].xy).xyz; 
+  vec3 c12 = texture2D(rubyTexture, gl_TexCoord[3].zw).xyz; 
+  vec3 c22 = texture2D(rubyTexture, gl_TexCoord[3].xy).xyz; 
+  vec3 dt = vec3(1.0, 1.0, 1.0);
+
+  float md1 = dot(abs(c00 - c22), dt);
+  float md2 = dot(abs(c02 - c20), dt);
+
+  float w1 = dot(abs(c22 - c11), dt) * md2;
+  float w2 = dot(abs(c02 - c11), dt) * md1;
+  float w3 = dot(abs(c00 - c11), dt) * md2;
+  float w4 = dot(abs(c20 - c11), dt) * md1;
+
+  float t1 = w1 + w3;
+  float t2 = w2 + w4;
+  float ww = max(t1, t2) + 0.0001;
+
+  c11 = (w1 * c00 + w2 * c20 + w3 * c22 + w4 * c02 + ww * c11) / (t1 + t2 + ww);
+
+  float lc1 = k / (0.12 * dot(c10 + c12 + c11, dt) + lum_add);
+  float lc2 = k / (0.12 * dot(c01 + c21 + c11, dt) + lum_add);
+
+  w1 = clamp(lc1 * dot(abs(c11 - c10), dt) + mx, min_w, max_w);
+  w2 = clamp(lc2 * dot(abs(c11 - c21), dt) + mx, min_w, max_w);
+  w3 = clamp(lc1 * dot(abs(c11 - c12), dt) + mx, min_w, max_w);
+  w4 = clamp(lc2 * dot(abs(c11 - c01), dt) + mx, min_w, max_w);
+
+  gl_FragColor.xyz = w1 * c10 + w2 * c21 + w3 * c12 + w4 * c01 + (1.0 - w1 - w2 - w3 - w4) * c11;
+}

pixelshaders/HQ2x/vertex

@@ -0,0 +1,26 @@
+//HQ2x GLSL shader
+//license: GPL
+//original version by guest(r)
+//ruby port by byuu
+
+uniform vec2 rubyTextureSize;
+
+void main() {
+  float x = 0.5 * (1.0 / rubyTextureSize.x);
+  float y = 0.5 * (1.0 / rubyTextureSize.y);
+  vec2 dg1 = vec2( x, y);
+  vec2 dg2 = vec2(-x, y);
+  vec2 dx = vec2(x, 0.0);
+  vec2 dy = vec2(0.0, y);
+
+  gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+  gl_TexCoord[0] = gl_MultiTexCoord0;
+  gl_TexCoord[1].xy = gl_TexCoord[0].xy - dg1;
+  gl_TexCoord[1].zw = gl_TexCoord[0].xy - dy;
+  gl_TexCoord[2].xy = gl_TexCoord[0].xy - dg2;
+  gl_TexCoord[2].zw = gl_TexCoord[0].xy + dx;
+  gl_TexCoord[3].xy = gl_TexCoord[0].xy + dg1;
+  gl_TexCoord[3].zw = gl_TexCoord[0].xy + dy;
+  gl_TexCoord[4].xy = gl_TexCoord[0].xy + dg2;
+  gl_TexCoord[4].zw = gl_TexCoord[0].xy - dx;
+}

pixelshaders/Pixellate/fragment

@@ -0,0 +1,36 @@
+//Pixellate shader
+//license: GPL
+//author: Fes
+
+uniform sampler2D rubyTexture;
+uniform vec2      rubyTextureSize;
+
+void main() {
+  vec2 texelSize = 1.0 / rubyTextureSize;
+
+  vec2 range;
+  range.x = dFdx(gl_TexCoord[0].x) / 2.0 * 0.99;
+  range.y = dFdy(gl_TexCoord[0].y) / 2.0 * 0.99;
+
+  float left   = gl_TexCoord[0].x - range.x;
+  float top    = gl_TexCoord[0].y + range.y;
+  float right  = gl_TexCoord[0].x + range.x;
+  float bottom = gl_TexCoord[0].y - range.y;
+
+  vec4 topLeftColor     = texture2D(rubyTexture, (floor(vec2(left, top)     / texelSize) + 0.5) * texelSize);
+  vec4 bottomRightColor = texture2D(rubyTexture, (floor(vec2(right, bottom) / texelSize) + 0.5) * texelSize);
+  vec4 bottomLeftColor  = texture2D(rubyTexture, (floor(vec2(left, bottom)  / texelSize) + 0.5) * texelSize);
+  vec4 topRightColor    = texture2D(rubyTexture, (floor(vec2(right, top)    / texelSize) + 0.5) * texelSize);
+
+  vec2 border = clamp(round(gl_TexCoord[0] / texelSize) * texelSize, vec2(left, bottom), vec2(right, top));
+
+  float totalArea = 4.0 * range.x * range.y;
+
+  vec4 averageColor;
+  averageColor  = ((border.x - left)  * (top - border.y)    / totalArea) * topLeftColor;
+  averageColor += ((right - border.x) * (border.y - bottom) / totalArea) * bottomRightColor;
+  averageColor += ((border.x - left)  * (border.y - bottom) / totalArea) * bottomLeftColor;
+  averageColor += ((right - border.x) * (top - border.y)    / totalArea) * topRightColor;
+
+  gl_FragColor = averageColor;
+}

pixelshaders/Pixellate/vertex

@@ -0,0 +1,8 @@
+//Pixellate shader
+//license: GPL
+//author: Fes
+
+void main() {
+  gl_Position    = ftransform();
+  gl_TexCoord[0] = gl_MultiTexCoord0;
+}

pixelshaders/Scale2x/fragment

@@ -0,0 +1,28 @@
+//Scale2x GLSL shader
+//license: GPL
+//original version by Pete Bernert
+//ruby port by byuu
+
uniform sampler2D rubyTexture;
+uniform vec2 rubyTextureSize;
+
+void main() {
+  vec4 colD, colF, colB, colH, col, tmp;
+  vec2 sel;
+
+  col  = texture2DProj(rubyTexture, gl_TexCoord[0]);  //central (can be E0-E3)
+  colD = texture2DProj(rubyTexture, gl_TexCoord[1]);  //D (left)
+  colF = texture2DProj(rubyTexture, gl_TexCoord[2]);  //F (right)
+  colB = texture2DProj(rubyTexture, gl_TexCoord[3]);  //B (top)
+  colH = texture2DProj(rubyTexture, gl_TexCoord[4]);  //H (bottom)
+
+  sel = fract(gl_TexCoord[0].xy * rubyTextureSize.xy);       //where are we (E0-E3)? 
+                                                             //E0 is default
+  if(sel.y >= 0.5) { tmp = colB; colB = colH; colH = tmp; }  //E1 (or E3): swap B and H
+  if(sel.x >= 0.5) { tmp = colF; colF = colD; colD = tmp; }  //E2 (or E3): swap D and F 
+
+  if(colB == colD && colB != colF && colD != colH) {  //do the Scale2x rule
+    col = colD;
+  }
+
+  gl_FragColor = col;
+}

pixelshaders/Scale2x/vertex

@@ -0,0 +1,28 @@
+//Scale2x GLSL shader
+//license: GPL
+//original version by Pete Bernert
+//ruby port by byuu
+
+uniform vec2 rubyTextureSize;
+
+void main() {
+  vec4 offsetx;
+  vec4 offsety;
+
+  gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+
+  offsetx.x = 1.0 / rubyTextureSize.x;
+  offsetx.y = 0.0;
+  offsetx.w = 0.0;
+  offsetx.z = 0.0;
+  offsety.y = 1.0 / rubyTextureSize.y;
+  offsety.x = 0.0;
+  offsety.w = 0.0;
+  offsety.z = 0.0;
+
+  gl_TexCoord[0] = gl_MultiTexCoord0;         //center
+  gl_TexCoord[1] = gl_TexCoord[0] - offsetx;  //left
+  gl_TexCoord[2] = gl_TexCoord[0] + offsetx;  //right
+  gl_TexCoord[3] = gl_TexCoord[0] - offsety;  //top
+  gl_TexCoord[4] = gl_TexCoord[0] + offsety;  //bottom
+}

snesfilter/2xsai/2xsai.cpp

@@ -0,0 +1,132 @@
+//2xSaI / Super 2xSaI / Super Eagle filter
+//authors: kode54 and Kreed
+//license: GPL
+
+#include "2xsai.hpp"
+#include "implementation.cpp"
+
+//=====
+//2xSaI
+//=====
+
+void _2xSaIFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  outwidth  = width;
+  outheight = height;
+
+  if(width <= 256 && height <= 240) {
+    outwidth  *= 2;
+    outheight *= 2;
+  }
+}
+
+void _2xSaIFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(width > 256 || height > 240) {
+    filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    return;
+  }
+
+  for(unsigned y = 0; y < height; y++) {
+    const uint16_t *line_in = (const uint16_t *) (((const uint8_t*)input) + pitch * y);
+    uint32_t *line_out = temp + y * 256;
+    for(unsigned x = 0; x < width; x++) {
+      line_out[x] = colortable[line_in[x]];
+    }
+  }
+
+  _2xSaI32( (unsigned char *) temp, 1024, 0, (unsigned char *) output, outpitch, width, height );
+}
+
+_2xSaIFilter::_2xSaIFilter() {
+  temp = new uint32_t[256*240];
+}
+
+_2xSaIFilter::~_2xSaIFilter() {
+  delete[] temp;
+}
+
+//===========
+//Super 2xSaI
+//===========
+
+void Super2xSaIFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  outwidth  = width;
+  outheight = height;
+
+  if(width <= 256 && height <= 240) {
+    outwidth  *= 2;
+    outheight *= 2;
+  }
+}
+
+void Super2xSaIFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(width > 256 || height > 240) {
+    filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    return;
+  }
+
+  for(unsigned y = 0; y < height; y++) {
+    const uint16_t *line_in = (const uint16_t *) (((const uint8_t*)input) + pitch * y);
+    uint32_t *line_out = temp + y * 256;
+    for(unsigned x = 0; x < width; x++) {
+      line_out[x] = colortable[line_in[x]];
+    }
+  }
+
+  Super2xSaI32( (unsigned char *) temp, 1024, 0, (unsigned char *) output, outpitch, width, height );
+}
+
+Super2xSaIFilter::Super2xSaIFilter() {
+  temp = new uint32_t[256*240];
+}
+
+Super2xSaIFilter::~Super2xSaIFilter() {
+  delete[] temp;
+}
+
+//===========
+//Super Eagle
+//===========
+
+void SuperEagleFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  outwidth  = width;
+  outheight = height;
+
+  if(width <= 256 && height <= 240) {
+    outwidth  *= 2;
+    outheight *= 2;
+  }
+}
+
+void SuperEagleFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(width > 256 || height > 240) {
+    filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    return;
+  }
+
+  for(unsigned y = 0; y < height; y++) {
+    const uint16_t *line_in = (const uint16_t *) (((const uint8_t*)input) + pitch * y);
+    uint32_t *line_out = temp + y * 256;
+    for(unsigned x = 0; x < width; x++) {
+      line_out[x] = colortable[line_in[x]];
+    }
+  }
+
+  SuperEagle32( (unsigned char *) temp, 1024, 0, (unsigned char *) output, outpitch, width, height );
+}
+
+SuperEagleFilter::SuperEagleFilter() {
+  temp = new uint32_t[256*240];
+}
+
+SuperEagleFilter::~SuperEagleFilter() {
+  delete[] temp;
+}

snesfilter/2xsai/2xsai.hpp

@@ -0,0 +1,35 @@
+class _2xSaIFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+
+  _2xSaIFilter();
+  ~_2xSaIFilter();
+
+private:
+  uint32_t *temp;
+} filter_2xsai;
+
+class Super2xSaIFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+
+  Super2xSaIFilter();
+  ~Super2xSaIFilter();
+
+private:
+  uint32_t *temp;
+} filter_super2xsai;
+
+class SuperEagleFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+
+  SuperEagleFilter();
+  ~SuperEagleFilter();
+
+private:
+  uint32_t *temp;
+} filter_supereagle;

snesfilter/Makefile

@@ -0,0 +1,89 @@
+include nall/Makefile
+
+qtlibs := QtCore QtGui
+include nall/qt/Makefile
+
+c     := $(compiler) -std=gnu99
+cpp   := $(subst cc,++,$(compiler)) -std=gnu++0x
+flags := -O3 -I. -Iobj -fomit-frame-pointer $(qtinc)
+link  :=
+
+ifeq ($(platform),x)
+  flags := -fPIC -fopenmp $(flags)
+  link += -s -fopenmp -lpthread -lgomp
+else ifeq ($(platform),osx)
+  flags := -fPIC -fopenmp $(flags)
+  link += -fopenmp -lpthread -lgomp
+else ifeq ($(platform),win)
+  flags := -fopenmp $(flags)
+  link += -fopenmp -lpthread
+endif
+
+objects := snesfilter
+
+compile = \
+  $(strip \
+    $(if $(filter %.c,$<), \
+      $(c) $(flags) $1 -c $< -o $@, \
+      $(if $(filter %.cpp,$<), \
+        $(cpp) $(flags) $1 -c $< -o $@ \
+      ) \
+    ) \
+  )
+
+%.o: $<; $(call compile)
+
+all: build;
+
+objects := $(patsubst %,obj/%.o,$(objects))
+moc_headers := $(call rwildcard,./,%.moc.hpp)
+moc_objects := $(foreach f,$(moc_headers),obj/$(notdir $(patsubst %.moc.hpp,%.moc,$f)))
+
+# automatically run moc on all .moc.hpp (MOC header) files
+%.moc: $<; $(moc) -i $< -o $@
+
+# automatically generate %.moc build rules
+__list = $(moc_headers)
+$(foreach f,$(moc_objects), \
+  $(eval __file = $(word 1,$(__list))) \
+  $(eval __list = $(wordlist 2,$(words $(__list)),$(__list))) \
+  $(eval $f: $(__file)) \
+)
+
+##################
+### snesfilter ###
+##################
+
+obj/snesfilter.o: snesfilter.cpp *
+
+###############
+### targets ###
+###############
+
+build: $(moc_objects) $(objects)
+ifeq ($(platform),x)
+	ar rcs libsnesfilter.a $(objects)
+	$(cpp) $(link) -o libsnesfilter.so -shared -Wl,-soname,libsnesfilter.so.1 $(objects) $(qtlib)
+else ifeq ($(platform),osx)
+	ar rcs libsnesfilter.a $(objects)
+	$(cpp) $(link) -o libsnesfilter.dylib -shared -dynamiclib $(objects) $(qtlib)
+else ifeq ($(platform),win)
+	$(cpp) $(link) -o snesfilter.dll -shared -Wl,--out-implib,libsnesfilter.a $(objects) $(qtlib)
+endif
+
+install:
+ifeq ($(platform),x)
+	install -D -m 755 libsnesfilter.a $(DESTDIR)$(prefix)/lib
+	install -D -m 755 libsnesfilter.so $(DESTDIR)$(prefix)/lib
+	ldconfig -n $(DESTDIR)$(prefix)/lib
+else ifeq ($(platform),osx)
+	cp libsnesfilter.dylib /usr/local/lib/libsnesfilter.dylib
+endif
+
+clean:
+	-@$(call delete,obj/*.o)
+	-@$(call delete,obj/*.moc)
+	-@$(call delete,libsnesfilter.a)
+	-@$(call delete,libsnesfilter.so)
+	-@$(call delete,libsnesfilter.dylib)
+	-@$(call delete,snesfilter.dll)

snesfilter/cc.bat

@@ -0,0 +1,2 @@
+@mingw32-make
+@pause

snesfilter/clean.bat

@@ -0,0 +1 @@
+@mingw32-make clean

snesfilter/direct/direct.cpp

@@ -0,0 +1,32 @@
+#include "direct.hpp"
+
+void DirectFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  outwidth  = width;
+  outheight = height;
+}
+
+void DirectFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  pitch >>= 1;
+  outpitch >>= 2;
+
+  for(unsigned y = 0; y < height; y++) {
+    if(width == 512 && line[y] == 256) {
+      for(unsigned x = 0; x < 256; x++) {
+        uint16_t p = *input++;
+        *output++ = colortable[p];
+        *output++ = colortable[p];
+      }
+      input += 256;
+    } else {
+      for(unsigned x = 0; x < width; x++) {
+        uint16_t p = *input++;
+        *output++ = colortable[p];
+      }
+    }
+    input += pitch - width;
+    output += outpitch - width;
+  }
+}

snesfilter/direct/direct.hpp

@@ -0,0 +1,5 @@
+class DirectFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+} filter_direct;

snesfilter/hq2x/hq2x.cpp

@@ -0,0 +1,203 @@
+//HQ2x filter
+//authors: byuu and blargg
+//license: public domain
+//
+//note: this is a clean reimplementation of the original HQ2x filter, which was
+//written by Maxim Stepin (MaxSt). it is not 100% identical, but very similar.
+
+#include "hq2x.hpp"
+
+void HQ2xFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  if(height > 240) return filter_direct.size(outwidth, outheight, width, height);
+  outwidth  = (width  <= 256) ? width  * 2 : width;
+  outheight = (height <= 240) ? height * 2 : height;
+}
+
+void HQ2xFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(height > 240) {
+    filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    return;
+  }
+
+  pitch >>= 1;
+  outpitch >>= 2;
+
+  #pragma omp parallel for
+  for(unsigned y = 0; y < height; y++) {
+    const uint16_t *in = input + y * pitch;
+    uint32_t *out0 = output + y * pitch;
+    uint32_t *out1 = output + y * pitch + outpitch;
+
+    unsigned linewidth = line[y];
+
+    if(linewidth == 256) {
+      int prevline = (y == 0) || (linewidth != line[y - 1]) ? 0 : pitch;
+      int nextline = (y == height - 1) || (linewidth != line[y + 1]) ? 0 : pitch;
+
+      in++;
+      *out0++ = 0; *out0++ = 0;
+      *out1++ = 0; *out1++ = 0;
+
+      for(unsigned x = 1; x < 256 - 1; x++) {
+        uint16_t A = *(in - prevline - 1);
+        uint16_t B = *(in - prevline + 0);
+        uint16_t C = *(in - prevline + 1);
+        uint16_t D = *(in - 1);
+        uint16_t E = *(in + 0);
+        uint16_t F = *(in + 1);
+        uint16_t G = *(in + nextline - 1);
+        uint16_t H = *(in + nextline + 0);
+        uint16_t I = *(in + nextline + 1);
+        uint32_t e = yuvTable[E] + diff_offset;
+
+        uint8_t pattern;
+        pattern  = diff(e, A) << 0;
+        pattern |= diff(e, B) << 1;
+        pattern |= diff(e, C) << 2;
+        pattern |= diff(e, D) << 3;
+        pattern |= diff(e, F) << 4;
+        pattern |= diff(e, G) << 5;
+        pattern |= diff(e, H) << 6;
+        pattern |= diff(e, I) << 7;
+
+        *(out0 + 0) = colortable[blend(hqTable[pattern], E, A, B, D, F, H)]; pattern = rotate[pattern];
+        *(out0 + 1) = colortable[blend(hqTable[pattern], E, C, F, B, H, D)]; pattern = rotate[pattern];
+        *(out1 + 1) = colortable[blend(hqTable[pattern], E, I, H, F, D, B)]; pattern = rotate[pattern];
+        *(out1 + 0) = colortable[blend(hqTable[pattern], E, G, D, H, B, F)];
+
+        in++;
+        out0 += 2;
+        out1 += 2;
+      }
+
+      in++;
+      *out0++ = 0; *out0++ = 0;
+      *out1++ = 0; *out1++ = 0;
+    } else {
+      for(unsigned x = 0; x < 512; x++) {
+        *out0++ = *out1++ = colortable[*in++];
+      }
+    }
+  }
+}
+
+HQ2xFilter::HQ2xFilter() {
+  yuvTable = new uint32_t[32768];
+
+  for(unsigned i = 0; i < 32768; i++) {
+    uint8_t R = (i >>  0) & 31;
+    uint8_t G = (i >>  5) & 31;
+    uint8_t B = (i >> 10) & 31;
+
+    //bgr555->bgr888
+    double r = (R << 3) | (R >> 2);
+    double g = (G << 3) | (G >> 2);
+    double b = (B << 3) | (B >> 2);
+
+    //bgr888->yuv888
+    double y = (r + g + b) * (0.25f * (63.5f / 48.0f));
+    double u = ((r - b) * 0.25f + 128.0f) * (7.5f / 7.0f);
+    double v = ((g * 2.0f - r - b) * 0.125f + 128.0f) * (7.5f / 6.0f);
+
+    yuvTable[i] = ((unsigned)y << 21) + ((unsigned)u << 11) + ((unsigned)v);
+  }
+
+  for(unsigned n = 0; n < 256; n++) {
+    rotate[n] = ((n >> 2) & 0x11) | ((n << 2) & 0x88)
+              | ((n & 0x01) << 5) | ((n & 0x08) << 3)
+              | ((n & 0x10) >> 3) | ((n & 0x80) >> 5);
+  }
+}
+
+HQ2xFilter::~HQ2xFilter() {
+  delete[] yuvTable;
+}
+
+bool HQ2xFilter::same(uint16_t x, uint16_t y) {
+  return !((yuvTable[x] - yuvTable[y] + diff_offset) & diff_mask);
+}
+
+bool HQ2xFilter::diff(uint32_t x, uint16_t y) {
+  return ((x - yuvTable[y]) & diff_mask);
+}
+
+void HQ2xFilter::grow(uint32_t &n) { n |= n << 16; n &= 0x03e07c1f; }
+uint16_t HQ2xFilter::pack(uint32_t n) { n &= 0x03e07c1f; return n | (n >> 16); }
+
+uint16_t HQ2xFilter::blend1(uint32_t A, uint32_t B) {
+  grow(A); grow(B);
+  A = (A * 3 + B) >> 2;
+  return pack(A);
+}
+
+uint16_t HQ2xFilter::blend2(uint32_t A, uint32_t B, uint32_t C) {
+  grow(A); grow(B); grow(C);
+  return pack((A * 2 + B + C) >> 2);
+}
+
+uint16_t HQ2xFilter::blend3(uint32_t A, uint32_t B, uint32_t C) {
+  grow(A); grow(B); grow(C);
+  return pack((A * 5 + B * 2 + C) >> 3);
+}
+
+uint16_t HQ2xFilter::blend4(uint32_t A, uint32_t B, uint32_t C) {
+  grow(A); grow(B); grow(C);
+  return pack((A * 6 + B + C) >> 3);
+}
+
+uint16_t HQ2xFilter::blend5(uint32_t A, uint32_t B, uint32_t C) {
+  grow(A); grow(B); grow(C);
+  return pack((A * 2 + (B + C) * 3) >> 3);
+}
+
+uint16_t HQ2xFilter::blend6(uint32_t A, uint32_t B, uint32_t C) {
+  grow(A); grow(B); grow(C);
+  return pack((A * 14 + B + C) >> 4);
+}
+
+uint16_t HQ2xFilter::blend(unsigned rule, uint16_t E, uint16_t A, uint16_t B, uint16_t D, uint16_t F, uint16_t H) {
+  switch(rule) { default:
+    case  0: return E;
+    case  1: return blend1(E, A);
+    case  2: return blend1(E, D);
+    case  3: return blend1(E, B);
+    case  4: return blend2(E, D, B);
+    case  5: return blend2(E, A, B);
+    case  6: return blend2(E, A, D);
+    case  7: return blend3(E, B, D);
+    case  8: return blend3(E, D, B);
+    case  9: return blend4(E, D, B);
+    case 10: return blend5(E, D, B);
+    case 11: return blend6(E, D, B);
+    case 12: return same(B, D) ? blend2(E, D, B) : E;
+    case 13: return same(B, D) ? blend5(E, D, B) : E;
+    case 14: return same(B, D) ? blend6(E, D, B) : E;
+    case 15: return same(B, D) ? blend2(E, D, B) : blend1(E, A);
+    case 16: return same(B, D) ? blend4(E, D, B) : blend1(E, A);
+    case 17: return same(B, D) ? blend5(E, D, B) : blend1(E, A);
+    case 18: return same(B, F) ? blend3(E, B, D) : blend1(E, D);
+    case 19: return same(D, H) ? blend3(E, D, B) : blend1(E, B);
+  }
+}
+
+const uint8_t HQ2xFilter::hqTable[256] = {
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 15, 12, 5,  3, 17, 13,
+  4, 4, 6, 18, 4, 4, 6, 18, 5,  3, 12, 12, 5,  3,  1, 12,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 17, 13, 5,  3, 16, 14,
+  4, 4, 6, 18, 4, 4, 6, 18, 5,  3, 16, 12, 5,  3,  1, 14,
+  4, 4, 6,  2, 4, 4, 6,  2, 5, 19, 12, 12, 5, 19, 16, 12,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 16, 12, 5,  3, 16, 12,
+  4, 4, 6,  2, 4, 4, 6,  2, 5, 19,  1, 12, 5, 19,  1, 14,
+  4, 4, 6,  2, 4, 4, 6, 18, 5,  3, 16, 12, 5, 19,  1, 14,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 15, 12, 5,  3, 17, 13,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 16, 12, 5,  3, 16, 12,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 17, 13, 5,  3, 16, 14,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 16, 13, 5,  3,  1, 14,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 16, 12, 5,  3, 16, 13,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 16, 12, 5,  3,  1, 12,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3, 16, 12, 5,  3,  1, 14,
+  4, 4, 6,  2, 4, 4, 6,  2, 5,  3,  1, 12, 5,  3,  1, 14,
+};

snesfilter/hq2x/hq2x.hpp

@@ -0,0 +1,30 @@
+class HQ2xFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+
+  HQ2xFilter();
+  ~HQ2xFilter();
+
+private:
+  enum {
+    diff_offset = (0x440 << 21) + (0x207 << 11) + 0x407,
+    diff_mask   = (0x380 << 21) + (0x1f0 << 11) + 0x3f0,
+  };
+
+  static const uint8_t hqTable[256];
+  uint32_t *yuvTable;
+  uint8_t rotate[256];
+
+  alwaysinline bool same(uint16_t x, uint16_t y);
+  alwaysinline bool diff(uint32_t x, uint16_t y);
+  alwaysinline void grow(uint32_t &n);
+  alwaysinline uint16_t pack(uint32_t n);
+  alwaysinline uint16_t blend1(uint32_t A, uint32_t B);
+  alwaysinline uint16_t blend2(uint32_t A, uint32_t B, uint32_t C);
+  alwaysinline uint16_t blend3(uint32_t A, uint32_t B, uint32_t C);
+  alwaysinline uint16_t blend4(uint32_t A, uint32_t B, uint32_t C);
+  alwaysinline uint16_t blend5(uint32_t A, uint32_t B, uint32_t C);
+  alwaysinline uint16_t blend6(uint32_t A, uint32_t B, uint32_t C);
+  alwaysinline uint16_t blend(unsigned rule, uint16_t E, uint16_t A, uint16_t B, uint16_t D, uint16_t F, uint16_t H);
+} filter_hq2x;

snesfilter/lq2x/lq2x.cpp

@@ -0,0 +1,61 @@
+#include "lq2x.hpp"
+
+void LQ2xFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  if(height > 240) return filter_direct.size(outwidth, outheight, width, height);
+  outwidth  = (width  <= 256) ? width  * 2 : width;
+  outheight = (height <= 240) ? height * 2 : height;
+}
+
+void LQ2xFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(height > 240) {
+    filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    return;
+  }
+
+  pitch >>= 1;
+  outpitch >>= 2;
+
+  uint32_t *out0 = output;
+  uint32_t *out1 = output + outpitch;
+
+  for(unsigned y = 0; y < height; y++) {
+    unsigned linewidth = line[y];
+
+    if(linewidth == 256) {
+      int prevline = (y == 0) || (linewidth != line[y - 1]) ? 0 : pitch;
+      int nextline = (y == height - 1) || (linewidth != line[y + 1]) ? 0 : pitch;
+
+      for(unsigned x = 0; x < 256; x++) {
+        uint16_t A = *(input - prevline);
+        uint16_t B = (x >   0) ? *(input - 1) : *input;
+        uint16_t C = *input;
+        uint16_t D = (x < 255) ? *(input + 1) : *input;
+        uint16_t E = *(input++ + nextline);
+        uint32_t c = colortable[C];
+
+        if(A != E && B != D) {
+          *out0++ = (A == B ? colortable[C + A - ((C ^ A) & 0x0421) >> 1] : c);
+          *out0++ = (A == D ? colortable[C + A - ((C ^ A) & 0x0421) >> 1] : c);
+          *out1++ = (E == B ? colortable[C + E - ((C ^ E) & 0x0421) >> 1] : c);
+          *out1++ = (E == D ? colortable[C + E - ((C ^ E) & 0x0421) >> 1] : c);
+        } else {
+          *out0++ = c;
+          *out0++ = c;
+          *out1++ = c;
+          *out1++ = c;
+        }
+      }
+    } else {
+      for(unsigned x = 0; x < 512; x++) {
+        *out0++ = *out1++ = colortable[*input++];
+      }
+    }
+
+    input += pitch - linewidth;
+    out0 += outpitch + outpitch - 512;
+    out1 += outpitch + outpitch - 512;
+  }
+}

snesfilter/lq2x/lq2x.hpp

@@ -0,0 +1,5 @@
+class LQ2xFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+} filter_lq2x;

snesfilter/nall/Makefile

@@ -0,0 +1,107 @@
+# Makefile
+# author: byuu
+# license: public domain
+
+[A-Z] = A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
+[a-z] = a b c d e f g h i j k l m n o p q r s t u v w x y z
+[0-9] = 0 1 2 3 4 5 6 7 8 9
+[markup] = ` ~ ! @ \# $$ % ^ & * ( ) - _ = + [ { ] } \ | ; : ' " , < . > / ?
+[all] = $([A-Z]) $([a-z]) $([0-9]) $([markup])
+[space] :=
+[space] +=
+
+#####
+# platform detection
+#####
+
+ifeq ($(platform),)
+  uname := $(shell uname -a)
+  ifeq ($(uname),)
+    platform := win
+    delete = del $(subst /,\,$1)
+  else ifneq ($(findstring Darwin,$(uname)),)
+    platform := osx
+    delete = rm -f $1
+  else
+    platform := x
+    delete = rm -f $1
+  endif
+endif
+
+ifeq ($(compiler),)
+  ifeq ($(platform),osx)
+    compiler := gcc-4.2
+  else
+    compiler := gcc
+  endif
+endif
+
+ifeq ($(prefix),)
+  prefix := /usr/local
+endif
+
+#####
+# function rwildcard(directory, pattern)
+#####
+rwildcard = \
+  $(strip \
+    $(filter $(if $2,$2,%), \
+      $(foreach f, \
+        $(wildcard $1*), \
+        $(eval t = $(call rwildcard,$f/)) \
+        $(if $t,$t,$f) \
+      ) \
+    ) \
+  )
+
+#####
+# function strtr(source, from, to)
+#####
+strtr = \
+  $(eval __temp := $1) \
+  $(strip \
+    $(foreach c, \
+      $(join $(addsuffix :,$2),$3), \
+      $(eval __temp := \
+        $(subst $(word 1,$(subst :, ,$c)),$(word 2,$(subst :, ,$c)),$(__temp)) \
+      ) \
+    ) \
+    $(__temp) \
+  )
+
+#####
+# function strupper(source)
+#####
+strupper = $(call strtr,$1,$([a-z]),$([A-Z]))
+
+#####
+# function strlower(source)
+#####
+strlower = $(call strtr,$1,$([A-Z]),$([a-z]))
+
+#####
+# function strlen(source)
+#####
+strlen = \
+  $(eval __temp := $(subst $([space]),_,$1)) \
+  $(words \
+    $(strip \
+      $(foreach c, \
+        $([all]), \
+        $(eval __temp := \
+          $(subst $c,$c ,$(__temp)) \
+        ) \
+      ) \
+      $(__temp) \
+    ) \
+  )
+
+#####
+# function streq(source)
+#####
+streq = $(if $(filter-out xx,x$(subst $1,,$2)$(subst $2,,$1)x),,1)
+
+#####
+# function strne(source)
+#####
+strne = $(if $(filter-out xx,x$(subst $1,,$2)$(subst $2,,$1)x),1,)

snesfilter/nall/algorithm.hpp

@@ -0,0 +1,23 @@
+#ifndef NALL_ALGORITHM_HPP
+#define NALL_ALGORITHM_HPP
+
+#undef min
+#undef max
+
+namespace nall {
+  template<typename T, typename U> T min(const T &t, const U &u) {
+    return t < u ? t : u;
+  }
+
+  template<typename T, typename U> T max(const T &t, const U &u) {
+    return t > u ? t : u;
+  }
+
+  //pseudo-random number generator
+  inline unsigned prng() {
+    static unsigned n = 0;
+    return n = (n >> 1) ^ (((n & 1) - 1) & 0xedb88320);
+  }
+}
+
+#endif

snesfilter/nall/any.hpp

@@ -0,0 +1,74 @@
+#ifndef NALL_ANY_HPP
+#define NALL_ANY_HPP
+
+#include <typeinfo>
+#include <type_traits>
+#include <nall/static.hpp>
+
+namespace nall {
+  class any {
+  public:
+    bool empty() const { return container; }
+    const std::type_info& type() const { return container ? container->type() : typeid(void); }
+
+    template<typename T> any& operator=(const T& value_) {
+      typedef typename static_if<
+        std::is_array<T>::value,
+        typename std::remove_extent<typename std::add_const<T>::type>::type*,
+        T
+      >::type auto_t;
+
+      if(type() == typeid(auto_t)) {
+        static_cast<holder<auto_t>*>(container)->value = (auto_t)value_;
+      } else {
+        if(container) delete container;
+        container = new holder<auto_t>((auto_t)value_);
+      }
+
+      return *this;
+    }
+
+    any() : container(0) {}
+    template<typename T> any(const T& value_) : container(0) { operator=(value_); }
+
+  private:
+    struct placeholder {
+      virtual const std::type_info& type() const = 0;
+    } *container;
+
+    template<typename T> struct holder : placeholder {
+      T value;
+      const std::type_info& type() const { return typeid(T); }
+      holder(const T& value_) : value(value_) {}
+    };
+
+    template<typename T> friend T any_cast(any&);
+    template<typename T> friend T any_cast(const any&);
+    template<typename T> friend T* any_cast(any*);
+    template<typename T> friend const T* any_cast(const any*);
+  };
+
+  template<typename T> T any_cast(any &value) {
+    typedef typename std::remove_reference<T>::type nonref;
+    if(value.type() != typeid(nonref)) throw;
+    return static_cast<any::holder<nonref>*>(value.container)->value;
+  }
+
+  template<typename T> T any_cast(const any &value) {
+    typedef const typename std::remove_reference<T>::type nonref;
+    if(value.type() != typeid(nonref)) throw;
+    return static_cast<any::holder<nonref>*>(value.container)->value;
+  }
+
+  template<typename T> T* any_cast(any *value) {
+    if(!value || value->type() != typeid(T)) return 0;
+    return &static_cast<any::holder<T>*>(value->container)->value;
+  }
+
+  template<typename T> const T* any_cast(const any *value) {
+    if(!value || value->type() != typeid(T)) return 0;
+    return &static_cast<any::holder<T>*>(value->container)->value;
+  }
+}
+
+#endif

snesfilter/nall/array.hpp

@@ -0,0 +1,120 @@
+#ifndef NALL_ARRAY_HPP
+#define NALL_ARRAY_HPP
+
+#include <stdlib.h>
+#include <initializer_list>
+#include <type_traits>
+#include <utility>
+#include <nall/algorithm.hpp>
+#include <nall/bit.hpp>
+#include <nall/concept.hpp>
+
+namespace nall {
+  //dynamic vector array
+  //neither constructor nor destructor is ever invoked;
+  //thus, this should only be used for POD objects.
+  template<typename T> class array {
+  protected:
+    T *pool;
+    unsigned poolsize, buffersize;
+
+  public:
+    unsigned size() const { return buffersize; }
+    unsigned capacity() const { return poolsize; }
+
+    void reset() {
+      if(pool) free(pool);
+      pool = 0;
+      poolsize = 0;
+      buffersize = 0;
+    }
+
+    void reserve(unsigned newsize) {
+      if(newsize == poolsize) return;
+
+      pool = (T*)realloc(pool, newsize * sizeof(T));
+      poolsize = newsize;
+      buffersize = min(buffersize, newsize);
+    }
+
+    void resize(unsigned newsize) {
+      if(newsize > poolsize) reserve(bit::round(newsize));  //round reserve size up to power of 2
+      buffersize = newsize;
+    }
+
+    T* get(unsigned minsize = 0) {
+      if(minsize > buffersize) resize(minsize);
+      if(minsize > buffersize) throw "array[] out of bounds";
+      return pool;
+    }
+
+    void add(const T data) {
+      operator[](buffersize) = data;
+    }
+
+    signed find(const T data) {
+      for(unsigned i = 0; i < size(); i++) if(pool[i] == data) return i;
+      return -1;  //not found
+    }
+
+    void clear() {
+      memset(pool, 0, buffersize * sizeof(T));
+    }
+
+    array() : pool(0), poolsize(0), buffersize(0) {
+    }
+
+    array(std::initializer_list<T> list) : pool(0), poolsize(0), buffersize(0) {
+      for(const T *p = list.begin(); p != list.end(); ++p) add(*p);
+    }
+
+    ~array() {
+      reset();
+    }
+
+    //copy
+    array& operator=(const array &source) {
+      if(pool) free(pool);
+      buffersize = source.buffersize;
+      poolsize = source.poolsize;
+      pool = (T*)malloc(sizeof(T) * poolsize);            //allocate entire pool size,
+      memcpy(pool, source.pool, sizeof(T) * buffersize);  //... but only copy used pool objects
+      return *this;
+    }
+
+    array(const array &source) : pool(0), poolsize(0), buffersize(0) {
+      operator=(source);
+    }
+
+    //move
+    array& operator=(array &&source) {
+      if(pool) free(pool);
+      pool = source.pool;
+      poolsize = source.poolsize;
+      buffersize = source.buffersize;
+      source.pool = 0;
+      source.reset();
+      return *this;
+    }
+
+    array(array &&source) : pool(0), poolsize(0), buffersize(0) {
+      operator=(std::move(source));
+    }
+
+    //index
+    inline T& operator[](unsigned index) {
+      if(index >= buffersize) resize(index + 1);
+      if(index >= buffersize) throw "array[] out of bounds";
+      return pool[index];
+    }
+
+    inline const T& operator[](unsigned index) const {
+      if(index >= buffersize) throw "array[] out of bounds";
+      return pool[index];
+    }
+  };
+
+  template<typename T> struct has_size<array<T>> { enum { value = true }; };
+}
+
+#endif

snesfilter/nall/base64.hpp

@@ -0,0 +1,90 @@
+#ifndef NALL_BASE64_HPP
+#define NALL_BASE64_HPP
+
+#include <string.h>
+#include <nall/stdint.hpp>
+
+namespace nall {
+  class base64 {
+  public:
+    static bool encode(char *&output, const uint8_t* input, unsigned inlength) {
+      output = new char[inlength * 8 / 6 + 6]();
+
+      unsigned i = 0, o = 0;
+      while(i < inlength) {
+        switch(i % 3) {
+          case 0: {
+            output[o++] = enc(input[i] >> 2);
+            output[o] = enc((input[i] & 3) << 4);
+          } break;
+
+          case 1: {
+            uint8_t prev = dec(output[o]);
+            output[o++] = enc(prev + (input[i] >> 4));
+            output[o] = enc((input[i] & 15) << 2);
+          } break;
+
+          case 2: {
+            uint8_t prev = dec(output[o]);
+            output[o++] = enc(prev + (input[i] >> 6));
+            output[o++] = enc(input[i] & 63);
+          } break;
+        }
+
+        i++;
+      }
+
+      return true;
+    }
+
+    static bool decode(uint8_t *&output, unsigned &outlength, const char *input) {
+      unsigned inlength = strlen(input), infix = 0;
+      output = new uint8_t[inlength]();
+
+      unsigned i = 0, o = 0;
+      while(i < inlength) {
+        uint8_t x = dec(input[i]);
+
+        switch(i++ & 3) {
+          case 0: {
+            output[o] = x << 2;
+          } break;
+
+          case 1: {
+            output[o++] |= x >> 4;
+            output[o] = (x & 15) << 4;
+          } break;
+
+          case 2: {
+            output[o++] |= x >> 2;
+            output[o] = (x & 3) << 6;
+          } break;
+
+          case 3: {
+            output[o++] |= x;
+          } break;
+        }
+      }
+
+      outlength = o;
+      return true;
+    }
+
+  private:
+    static char enc(uint8_t n) {
+      static char lookup_table[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
+      return lookup_table[n & 63];
+    }
+
+    static uint8_t dec(char n) {
+      if(n >= 'A' && n <= 'Z') return n - 'A';
+      if(n >= 'a' && n <= 'z') return n - 'a' + 26;
+      if(n >= '0' && n <= '9') return n - '0' + 52;
+      if(n == '-') return 62;
+      if(n == '_') return 63;
+      return 0;
+    }
+  };
+}
+
+#endif

snesfilter/nall/bit.hpp

@@ -0,0 +1,51 @@
+#ifndef NALL_BIT_HPP
+#define NALL_BIT_HPP
+
+namespace nall {
+  template<int bits> inline unsigned uclamp(const unsigned x) {
+    enum { y = (1U << bits) - 1 };
+    return y + ((x - y) & -(x < y));  //min(x, y);
+  }
+
+  template<int bits> inline unsigned uclip(const unsigned x) {
+    enum { m = (1U << bits) - 1 };
+    return (x & m);
+  }
+
+  template<int bits> inline signed sclamp(const signed x) {
+    enum { b = 1U << (bits - 1), m = (1U << (bits - 1)) - 1 };
+    return (x > m) ? m : (x < -b) ? -b : x;
+  }
+
+  template<int bits> inline signed sclip(const signed x) {
+    enum { b = 1U << (bits - 1), m = (1U << bits) - 1 };
+    return ((x & m) ^ b) - b;
+  }
+
+  namespace bit {
+    //lowest(0b1110) == 0b0010
+    template<typename T> inline T lowest(const T x) {
+      return x & -x;
+    }
+
+    //clear_lowest(0b1110) == 0b1100
+    template<typename T> inline T clear_lowest(const T x) {
+      return x & (x - 1);
+    }
+
+    //set_lowest(0b0101) == 0b0111
+    template<typename T> inline T set_lowest(const T x) {
+      return x | (x + 1);
+    }
+
+    //round up to next highest single bit:
+    //round(15) == 16, round(16) == 16, round(17) == 32
+    inline unsigned round(unsigned x) {
+      if((x & (x - 1)) == 0) return x;
+      while(x & (x - 1)) x &= x - 1;
+      return x << 1;
+    }
+  }
+}
+
+#endif

snesfilter/nall/concept.hpp

@@ -0,0 +1,15 @@
+#ifndef NALL_CONCEPT_HPP
+#define NALL_CONCEPT_HPP
+
+namespace nall {
+  //unsigned count() const;
+  template<typename T> struct has_count { enum { value = false }; };
+
+  //unsigned length() const;
+  template<typename T> struct has_length { enum { value = false }; };
+
+  //unsigned size() const;
+  template<typename T> struct has_size { enum { value = false }; };
+}
+
+#endif

snesfilter/nall/config.hpp

@@ -0,0 +1,124 @@
+#ifndef NALL_CONFIG_HPP
+#define NALL_CONFIG_HPP
+
+#include <nall/file.hpp>
+#include <nall/string.hpp>
+#include <nall/vector.hpp>
+
+namespace nall {
+  namespace configuration_traits {
+    template<typename T> struct is_boolean { enum { value = false }; };
+    template<> struct is_boolean<bool> { enum { value = true }; };
+
+    template<typename T> struct is_signed { enum { value = false }; };
+    template<> struct is_signed<signed> { enum { value = true }; };
+
+    template<typename T> struct is_unsigned { enum { value = false }; };
+    template<> struct is_unsigned<unsigned> { enum { value = true }; };
+
+    template<typename T> struct is_double { enum { value = false }; };
+    template<> struct is_double<double> { enum { value = true }; };
+
+    template<typename T> struct is_string { enum { value = false }; };
+    template<> struct is_string<string> { enum { value = true }; };
+  }
+
+  class configuration {
+  public:
+    enum type_t { boolean_t, signed_t, unsigned_t, double_t, string_t, unknown_t };
+    struct item_t {
+      uintptr_t data;
+      string name;
+      string desc;
+      type_t type;
+
+      string get() const {
+        switch(type) {
+          case boolean_t:  return string() << *(bool*)data;
+          case signed_t:   return string() << *(signed*)data;
+          case unsigned_t: return string() << *(unsigned*)data;
+          case double_t:   return string() << *(double*)data;
+          case string_t:   return string() << "\"" << *(string*)data << "\"";
+        }
+        return "???";
+      }
+
+      void set(string s) {
+        switch(type) {
+          case boolean_t:  *(bool*)data = (s == "true");      break;
+          case signed_t:   *(signed*)data = strsigned(s);     break;
+          case unsigned_t: *(unsigned*)data = strunsigned(s); break;
+          case double_t:   *(double*)data = strdouble(s);     break;
+          case string_t:   trim(s, "\""); *(string*)data = s; break;
+        }
+      }
+    };
+    linear_vector<item_t> list;
+
+    template<typename T>
+    void attach(T &data, const char *name, const char *desc = "") {
+      unsigned n = list.size();
+      list[n].data = (uintptr_t)&data;
+      list[n].name = name;
+      list[n].desc = desc;
+
+      if(configuration_traits::is_boolean<T>::value) list[n].type = boolean_t;
+      else if(configuration_traits::is_signed<T>::value) list[n].type = signed_t;
+      else if(configuration_traits::is_unsigned<T>::value) list[n].type = unsigned_t;
+      else if(configuration_traits::is_double<T>::value) list[n].type = double_t;
+      else if(configuration_traits::is_string<T>::value) list[n].type = string_t;
+      else list[n].type = unknown_t;
+    }
+
+    virtual bool load(const char *filename) {
+      string data;
+      if(data.readfile(filename) == true) {
+        data.replace("\r", "");
+        lstring line;
+        line.split("\n", data);
+
+        for(unsigned i = 0; i < line.size(); i++) {
+          int position = qstrpos(line[i], "#");
+          if(position >= 0) line[i][position] = 0;
+          if(qstrpos(line[i], " = ") < 0) continue;
+
+          lstring part;
+          part.qsplit(" = ", line[i]);
+          trim(part[0]);
+          trim(part[1]);
+
+          for(unsigned n = 0; n < list.size(); n++) {
+            if(part[0] == list[n].name) {
+              list[n].set(part[1]);
+              break;
+            }
+          }
+        }
+
+        return true;
+      } else {
+        return false;
+      }
+    }
+
+    virtual bool save(const char *filename) const {
+      file fp;
+      if(fp.open(filename, file::mode_write)) {
+        for(unsigned i = 0; i < list.size(); i++) {
+          string output;
+          output << list[i].name << " = " << list[i].get();
+          if(list[i].desc != "") output << " # " << list[i].desc;
+          output << "\r\n";
+          fp.print(output);
+        }
+
+        fp.close();
+        return true;
+      } else {
+        return false;
+      }
+    }
+  };
+}
+
+#endif

snesfilter/nall/crc32.hpp

@@ -0,0 +1,66 @@
+#ifndef NALL_CRC32_HPP
+#define NALL_CRC32_HPP
+
+#include <nall/stdint.hpp>
+
+namespace nall {
+  const uint32_t crc32_table[256] = {
+    0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
+    0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
+    0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
+    0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+    0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
+    0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
+    0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
+    0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+    0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
+    0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
+    0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
+    0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+    0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
+    0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
+    0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
+    0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+    0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
+    0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
+    0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
+    0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+    0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
+    0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
+    0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
+    0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+    0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
+    0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
+    0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
+    0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+    0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
+    0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
+    0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
+    0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+    0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
+    0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
+    0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
+    0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+    0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
+    0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
+    0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
+    0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+    0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
+    0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
+    0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+  };
+
+  inline uint32_t crc32_adjust(uint32_t crc32, uint8_t input) {
+    return ((crc32 >> 8) & 0x00ffffff) ^ crc32_table[(crc32 ^ input) & 0xff];
+  }
+
+  inline uint32_t crc32_calculate(const uint8_t *data, unsigned length) {
+    uint32_t crc32 = ~0;
+    for(unsigned i = 0; i < length; i++) {
+      crc32 = crc32_adjust(crc32, data[i]);
+    }
+    return ~crc32;
+  }
+}
+
+#endif

snesfilter/nall/detect.hpp

@@ -0,0 +1,30 @@
+#ifndef NALL_DETECT_HPP
+#define NALL_DETECT_HPP
+
+/* Compiler detection */
+
+#if defined(__GNUC__)
+  #define COMPILER_GCC
+#elif defined(_MSC_VER)
+  #define COMPILER_VISUALC
+#endif
+
+/* Platform detection */
+
+#if defined(_WIN32)
+  #define PLATFORM_WIN
+#elif defined(__APPLE__)
+  #define PLATFORM_OSX
+#elif defined(linux) || defined(__sun__) || defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+  #define PLATFORM_X
+#endif
+
+/* Endian detection */
+
+#if defined(__i386__) || defined(__amd64__) || defined(_M_IX86) || defined(_M_AMD64)
+  #define ARCH_LSB
+#elif defined(__powerpc__) || defined(_M_PPC) || defined(__BIG_ENDIAN__)
+  #define ARCH_MSB
+#endif
+
+#endif

snesfilter/nall/dictionary.hpp

@@ -0,0 +1,76 @@
+#ifndef NALL_DICTIONARY_HPP
+#define NALL_DICTIONARY_HPP
+
+#include <nall/array.hpp>
+#include <nall/string.hpp>
+#include <nall/utility.hpp>
+
+namespace nall {
+  class dictionary {
+  public:
+    string operator[](const char *input) {
+      for(unsigned i = 0; i < index_input.size(); i++) {
+        if(index_input[i] == input) return index_output[i];
+      }
+
+      //no match, use input; remove input identifier, if one exists
+      if(strbegin(input, "{{")) {
+        int pos = strpos(input, "}}");
+        if(pos >= 0) {
+          string temp = substr(input, pos + 2);
+          return temp;
+        }
+      }
+
+      return input;
+    }
+
+    bool import(const char *filename) {
+      string data;
+      if(data.readfile(filename) == false) return false;
+      ltrim_once(data, "\xef\xbb\xbf"); //remove UTF-8 marker, if it exists
+      data.replace("\r", "");
+
+      lstring line;
+      line.split("\n", data);
+      for(unsigned i = 0; i < line.size(); i++) {
+        lstring part;
+        //format: "Input" = "Output"
+        part.qsplit("=", line[i]);
+        if(part.size() != 2) continue;
+
+        //remove whitespace
+        trim(part[0]);
+        trim(part[1]);
+
+        //remove quotes
+        trim_once(part[0], "\"");
+        trim_once(part[1], "\"");
+
+        unsigned n = index_input.size();
+        index_input[n]  = part[0];
+        index_output[n] = part[1];
+      }
+
+      return true;
+    }
+
+    void reset() {
+      index_input.reset();
+      index_output.reset();
+    }
+
+    ~dictionary() {
+      reset();
+    }
+
+    dictionary& operator=(const dictionary&) = delete;
+    dictionary(const dictionary&) = delete;
+
+  protected:
+    lstring index_input;
+    lstring index_output;
+  };
+}
+
+#endif

snesfilter/nall/dl.hpp

@@ -0,0 +1,119 @@
+#ifndef NALL_DL_HPP
+#define NALL_DL_HPP
+
+//dynamic linking support
+
+#include <string.h>
+#include <nall/detect.hpp>
+#include <nall/stdint.hpp>
+#include <nall/utility.hpp>
+
+#if defined(PLATFORM_X) || defined(PLATFORM_OSX)
+  #include <dlfcn.h>
+#elif defined(PLATFORM_WIN)
+  #include <windows.h>
+  #include <nall/utf8.hpp>
+#endif
+
+namespace nall {
+  struct library {
+    bool opened() const { return handle; }
+    bool open(const char*);
+    void* sym(const char*);
+    void close();
+
+    library() : handle(0) {}
+    ~library() { close(); }
+
+    library& operator=(const library&) = delete;
+    library(const library&) = delete;
+
+  private:
+    uintptr_t handle;
+  };
+
+  #if defined(PLATFORM_X)
+  inline bool library::open(const char *name) {
+    if(handle) close();
+    char *t = new char[strlen(name) + 256];
+    strcpy(t, "lib");
+    strcat(t, name);
+    strcat(t, ".so");
+    handle = (uintptr_t)dlopen(t, RTLD_LAZY);
+    if(!handle) {
+      strcpy(t, "/usr/local/lib/lib");
+      strcat(t, name);
+      strcat(t, ".so");
+      handle = (uintptr_t)dlopen(t, RTLD_LAZY);
+    }
+    delete[] t;
+    return handle;
+  }
+
+  inline void* library::sym(const char *name) {
+    if(!handle) return 0;
+    return dlsym((void*)handle, name);
+  }
+
+  inline void library::close() {
+    if(!handle) return;
+    dlclose((void*)handle);
+    handle = 0;
+  }
+  #elif defined(PLATFORM_OSX)
+  inline bool library::open(const char *name) {
+    if(handle) close();
+    char *t = new char[strlen(name) + 256];
+    strcpy(t, "lib");
+    strcat(t, name);
+    strcat(t, ".dylib");
+    handle = (uintptr_t)dlopen(t, RTLD_LAZY);
+    if(!handle) {
+      strcpy(t, "/usr/local/lib/lib");
+      strcat(t, name);
+      strcat(t, ".dylib");
+      handle = (uintptr_t)dlopen(t, RTLD_LAZY);
+    }
+    delete[] t;
+    return handle;
+  }
+
+  inline void* library::sym(const char *name) {
+    if(!handle) return 0;
+    return dlsym((void*)handle, name);
+  }
+
+  inline void library::close() {
+    if(!handle) return;
+    dlclose((void*)handle);
+    handle = 0;
+  }
+  #elif defined(PLATFORM_WIN)
+  inline bool library::open(const char *name) {
+    if(handle) close();
+    char *t = new char[strlen(name) + 8];
+    strcpy(t, name);
+    strcat(t, ".dll");
+    handle = (uintptr_t)LoadLibraryW(utf16_t(t));
+    delete[] t;
+    return handle;
+  }
+
+  inline void* library::sym(const char *name) {
+    if(!handle) return 0;
+    return (void*)GetProcAddress((HMODULE)handle, name);
+  }
+
+  inline void library::close() {
+    if(!handle) return;
+    FreeLibrary((HMODULE)handle);
+    handle = 0;
+  }
+  #else
+  inline bool library::open(const char*) { return false; }
+  inline void* library::sym(const char*) { return 0; }
+  inline void library::close() {}
+  #endif
+};
+
+#endif

snesfilter/nall/endian.hpp

@@ -0,0 +1,38 @@
+#ifndef NALL_ENDIAN_HPP
+#define NALL_ENDIAN_HPP
+
+#if !defined(ARCH_MSB)
+  //little-endian: uint8_t[] { 0x01, 0x02, 0x03, 0x04 } == 0x04030201
+  #define order_lsb2(a,b)             a,b
+  #define order_lsb3(a,b,c)           a,b,c
+  #define order_lsb4(a,b,c,d)         a,b,c,d
+  #define order_lsb5(a,b,c,d,e)       a,b,c,d,e
+  #define order_lsb6(a,b,c,d,e,f)     a,b,c,d,e,f
+  #define order_lsb7(a,b,c,d,e,f,g)   a,b,c,d,e,f,g
+  #define order_lsb8(a,b,c,d,e,f,g,h) a,b,c,d,e,f,g,h
+  #define order_msb2(a,b)             b,a
+  #define order_msb3(a,b,c)           c,b,a
+  #define order_msb4(a,b,c,d)         d,c,b,a
+  #define order_msb5(a,b,c,d,e)       e,d,c,b,a
+  #define order_msb6(a,b,c,d,e,f)     f,e,d,c,b,a
+  #define order_msb7(a,b,c,d,e,f,g)   g,f,e,d,c,b,a
+  #define order_msb8(a,b,c,d,e,f,g,h) h,g,f,e,d,c,b,a
+#else
+  //big-endian:    uint8_t[] { 0x01, 0x02, 0x03, 0x04 } == 0x01020304
+  #define order_lsb2(a,b)             b,a
+  #define order_lsb3(a,b,c)           c,b,a
+  #define order_lsb4(a,b,c,d)         d,c,b,a
+  #define order_lsb5(a,b,c,d,e)       e,d,c,b,a
+  #define order_lsb6(a,b,c,d,e,f)     f,e,d,c,b,a
+  #define order_lsb7(a,b,c,d,e,f,g)   g,f,e,d,c,b,a
+  #define order_lsb8(a,b,c,d,e,f,g,h) h,g,f,e,d,c,b,a
+  #define order_msb2(a,b)             a,b
+  #define order_msb3(a,b,c)           a,b,c
+  #define order_msb4(a,b,c,d)         a,b,c,d
+  #define order_msb5(a,b,c,d,e)       a,b,c,d,e
+  #define order_msb6(a,b,c,d,e,f)     a,b,c,d,e,f
+  #define order_msb7(a,b,c,d,e,f,g)   a,b,c,d,e,f,g
+  #define order_msb8(a,b,c,d,e,f,g,h) a,b,c,d,e,f,g,h
+#endif
+
+#endif

snesfilter/nall/file.hpp

@@ -0,0 +1,259 @@
+#ifndef NALL_FILE_HPP
+#define NALL_FILE_HPP
+
+#include <stdio.h>
+#include <string.h>
+
+#if !defined(_WIN32)
+  #include <unistd.h>
+#else
+  #include <io.h>
+#endif
+
+#include <nall/stdint.hpp>
+#include <nall/utf8.hpp>
+#include <nall/utility.hpp>
+
+namespace nall {
+  inline FILE* fopen_utf8(const char *utf8_filename, const char *mode) {
+    #if !defined(_WIN32)
+    return fopen(utf8_filename, mode);
+    #else
+    return _wfopen(utf16_t(utf8_filename), utf16_t(mode));
+    #endif
+  }
+
+  class file {
+  public:
+    enum FileMode { mode_read, mode_write, mode_readwrite, mode_writeread };
+    enum SeekMode { seek_absolute, seek_relative };
+
+    uint8_t read() {
+      if(!fp) return 0xff;                       //file not open
+      if(file_mode == mode_write) return 0xff;   //reads not permitted
+      if(file_offset >= file_size) return 0xff;  //cannot read past end of file
+      buffer_sync();
+      return buffer[(file_offset++) & buffer_mask];
+    }
+
+    uintmax_t readl(unsigned length = 1) {
+      uintmax_t data = 0;
+      for(int i = 0; i < length; i++) {
+        data |= (uintmax_t)read() << (i << 3);
+      }
+      return data;
+    }
+
+    uintmax_t readm(unsigned length = 1) {
+      uintmax_t data = 0;
+      while(length--) {
+        data <<= 8;
+        data |= read();
+      }
+      return data;
+    }
+
+    void read(uint8_t *buffer, unsigned length) {
+      while(length--) *buffer++ = read();
+    }
+
+    void write(uint8_t data) {
+      if(!fp) return;                     //file not open
+      if(file_mode == mode_read) return;  //writes not permitted
+      buffer_sync();
+      buffer[(file_offset++) & buffer_mask] = data;
+      buffer_dirty = true;
+      if(file_offset > file_size) file_size = file_offset;
+    }
+
+    void writel(uintmax_t data, unsigned length = 1) {
+      while(length--) {
+        write(data);
+        data >>= 8;
+      }
+    }
+
+    void writem(uintmax_t data, unsigned length = 1) {
+      for(int i = length - 1; i >= 0; i--) {
+        write(data >> (i << 3));
+      }
+    }
+
+    void write(const uint8_t *buffer, unsigned length) {
+      while(length--) write(*buffer++);
+    }
+
+    void print(const char *string) {
+      if(!string) return;
+      while(*string) write(*string++);
+    }
+
+    void flush() {
+      buffer_flush();
+      fflush(fp);
+    }
+
+    void seek(int offset, SeekMode mode = seek_absolute) {
+      if(!fp) return;  //file not open
+      buffer_flush();
+
+      uintmax_t req_offset = file_offset;
+      switch(mode) {
+        case seek_absolute: req_offset  = offset; break;
+        case seek_relative: req_offset += offset; break;
+      }
+
+      if(req_offset < 0) req_offset = 0;  //cannot seek before start of file
+      if(req_offset > file_size) {
+        if(file_mode == mode_read) {      //cannot seek past end of file
+          req_offset = file_size;
+        } else {                          //pad file to requested location
+          file_offset = file_size;
+          while(file_size < req_offset) write(0x00);
+        }
+      }
+
+      file_offset = req_offset;
+    }
+
+    int offset() {
+      if(!fp) return -1;  //file not open
+      return file_offset;
+    }
+
+    int size() {
+      if(!fp) return -1;  //file not open
+      return file_size;
+    }
+
+    bool truncate(unsigned size) {
+      if(!fp) return false;  //file not open
+      #if !defined(_WIN32)
+      return ftruncate(fileno(fp), size) == 0;
+      #else
+      return _chsize(fileno(fp), size) == 0;
+      #endif
+    }
+
+    bool end() {
+      if(!fp) return true;  //file not open
+      return file_offset >= file_size;
+    }
+
+    static bool exists(const char *fn) {
+      #if !defined(_WIN32)
+      FILE *fp = fopen(fn, "rb");
+      #else
+      FILE *fp = _wfopen(utf16_t(fn), L"rb");
+      #endif
+      if(fp) {
+        fclose(fp);
+        return true;
+      }
+      return false;
+    }
+
+    static unsigned size(const char *fn) {
+      #if !defined(_WIN32)
+      FILE *fp = fopen(fn, "rb");
+      #else
+      FILE *fp = _wfopen(utf16_t(fn), L"rb");
+      #endif
+      unsigned filesize = 0;
+      if(fp) {
+        fseek(fp, 0, SEEK_END);
+        filesize = ftell(fp);
+        fclose(fp);
+      }
+      return filesize;
+    }
+
+    bool open() {
+      return fp;
+    }
+
+    bool open(const char *fn, FileMode mode) {
+      if(fp) return false;
+
+      switch(file_mode = mode) {
+        #if !defined(_WIN32)
+        case mode_read:      fp = fopen(fn, "rb");  break;
+        case mode_write:     fp = fopen(fn, "wb+"); break;  //need read permission for buffering
+        case mode_readwrite: fp = fopen(fn, "rb+"); break;
+        case mode_writeread: fp = fopen(fn, "wb+"); break;
+        #else
+        case mode_read:      fp = _wfopen(utf16_t(fn), L"rb");  break;
+        case mode_write:     fp = _wfopen(utf16_t(fn), L"wb+"); break;
+        case mode_readwrite: fp = _wfopen(utf16_t(fn), L"rb+"); break;
+        case mode_writeread: fp = _wfopen(utf16_t(fn), L"wb+"); break;
+        #endif
+      }
+      if(!fp) return false;
+      buffer_offset = -1;  //invalidate buffer
+      file_offset = 0;
+      fseek(fp, 0, SEEK_END);
+      file_size = ftell(fp);
+      fseek(fp, 0, SEEK_SET);
+      return true;
+    }
+
+    void close() {
+      if(!fp) return;
+      buffer_flush();
+      fclose(fp);
+      fp = 0;
+    }
+
+    file() {
+      memset(buffer, 0, sizeof buffer);
+      buffer_offset = -1;
+      buffer_dirty = false;
+      fp = 0;
+      file_offset = 0;
+      file_size = 0;
+      file_mode = mode_read;
+    }
+
+    ~file() {
+      close();
+    }
+
+    file& operator=(const file&) = delete;
+    file(const file&) = delete;
+
+  private:
+    enum { buffer_size = 1 << 12, buffer_mask = buffer_size - 1 };
+    char buffer[buffer_size];
+    int buffer_offset;
+    bool buffer_dirty;
+    FILE *fp;
+    unsigned file_offset;
+    unsigned file_size;
+    FileMode file_mode;
+
+    void buffer_sync() {
+      if(!fp) return;  //file not open
+      if(buffer_offset != (file_offset & ~buffer_mask)) {
+        buffer_flush();
+        buffer_offset = file_offset & ~buffer_mask;
+        fseek(fp, buffer_offset, SEEK_SET);
+        unsigned length = (buffer_offset + buffer_size) <= file_size ? buffer_size : (file_size & buffer_mask);
+        if(length) unsigned unused = fread(buffer, 1, length, fp);
+      }
+    }
+
+    void buffer_flush() {
+      if(!fp) return;                     //file not open
+      if(file_mode == mode_read) return;  //buffer cannot be written to
+      if(buffer_offset < 0) return;       //buffer unused
+      if(buffer_dirty == false) return;   //buffer unmodified since read
+      fseek(fp, buffer_offset, SEEK_SET);
+      unsigned length = (buffer_offset + buffer_size) <= file_size ? buffer_size : (file_size & buffer_mask);
+      if(length) unsigned unused = fwrite(buffer, 1, length, fp);
+      buffer_offset = -1;                 //invalidate buffer
+      buffer_dirty = false;
+    }
+  };
+}
+
+#endif

snesfilter/nall/filemap.hpp

@@ -0,0 +1,190 @@
+#ifndef NALL_FILEMAP_HPP
+#define NALL_FILEMAP_HPP
+
+#include <nall/stdint.hpp>
+#include <nall/utf8.hpp>
+
+#include <stdio.h>
+#include <stdlib.h>
+#if defined(_WIN32)
+  #include <windows.h>
+#else
+  #include <fcntl.h>
+  #include <unistd.h>
+  #include <sys/mman.h>
+  #include <sys/stat.h>
+  #include <sys/types.h>
+#endif
+
+namespace nall {
+  class filemap {
+  public:
+    enum filemode { mode_read, mode_write, mode_readwrite, mode_writeread };
+
+    bool open(const char *filename, filemode mode) { return p_open(filename, mode); }
+    void close() { return p_close(); }
+    unsigned size() const { return p_size; }
+    uint8_t* handle() { return p_handle; }
+    const uint8_t* handle() const { return p_handle; }
+    filemap() : p_size(0), p_handle(0) { p_ctor(); }
+    ~filemap() { p_dtor(); }
+
+  private:
+    unsigned p_size;
+    uint8_t *p_handle;
+
+    #if defined(_WIN32)
+    //=============
+    //MapViewOfFile
+    //=============
+
+    HANDLE p_filehandle, p_maphandle;
+
+    bool p_open(const char *filename, filemode mode) {
+      int desired_access, creation_disposition, flprotect, map_access;
+
+      switch(mode) {
+        default: return false;
+        case mode_read:
+          desired_access = GENERIC_READ;
+          creation_disposition = OPEN_EXISTING;
+          flprotect = PAGE_READONLY;
+          map_access = FILE_MAP_READ;
+          break;
+        case mode_write:
+          //write access requires read access
+          desired_access = GENERIC_WRITE;
+          creation_disposition = CREATE_ALWAYS;
+          flprotect = PAGE_READWRITE;
+          map_access = FILE_MAP_ALL_ACCESS;
+          break;
+        case mode_readwrite:
+          desired_access = GENERIC_READ | GENERIC_WRITE;
+          creation_disposition = OPEN_EXISTING;
+          flprotect = PAGE_READWRITE;
+          map_access = FILE_MAP_ALL_ACCESS;
+          break;
+        case mode_writeread:
+          desired_access = GENERIC_READ | GENERIC_WRITE;
+          creation_disposition = CREATE_NEW;
+          flprotect = PAGE_READWRITE;
+          map_access = FILE_MAP_ALL_ACCESS;
+          break;
+      }
+
+      p_filehandle = CreateFileW(utf16_t(filename), desired_access, FILE_SHARE_READ, NULL,
+        creation_disposition, FILE_ATTRIBUTE_NORMAL, NULL);
+      if(p_filehandle == INVALID_HANDLE_VALUE) return false;
+
+      p_size = GetFileSize(p_filehandle, NULL);
+
+      p_maphandle = CreateFileMapping(p_filehandle, NULL, flprotect, 0, p_size, NULL);
+      if(p_maphandle == INVALID_HANDLE_VALUE) {
+        CloseHandle(p_filehandle);
+        p_filehandle = INVALID_HANDLE_VALUE;
+        return false;
+      }
+
+      p_handle = (uint8_t*)MapViewOfFile(p_maphandle, map_access, 0, 0, p_size);
+      return p_handle;
+    }
+
+    void p_close() {
+      if(p_handle) {
+        UnmapViewOfFile(p_handle);
+        p_handle = 0;
+      }
+
+      if(p_maphandle != INVALID_HANDLE_VALUE) {
+        CloseHandle(p_maphandle);
+        p_maphandle = INVALID_HANDLE_VALUE;
+      }
+
+      if(p_filehandle != INVALID_HANDLE_VALUE) {
+        CloseHandle(p_filehandle);
+        p_filehandle = INVALID_HANDLE_VALUE;
+      }
+    }
+
+    void p_ctor() {
+      p_filehandle = INVALID_HANDLE_VALUE;
+      p_maphandle  = INVALID_HANDLE_VALUE;
+    }
+
+    void p_dtor() {
+      close();
+    }
+
+    #else
+    //====
+    //mmap
+    //====
+
+    int p_fd;
+
+    bool p_open(const char *filename, filemode mode) {
+      int open_flags, mmap_flags;
+
+      switch(mode) {
+        default: return false;
+        case mode_read:
+          open_flags = O_RDONLY;
+          mmap_flags = PROT_READ;
+          break;
+        case mode_write:
+          open_flags = O_RDWR | O_CREAT;  //mmap() requires read access
+          mmap_flags = PROT_WRITE;
+          break;
+        case mode_readwrite:
+          open_flags = O_RDWR;
+          mmap_flags = PROT_READ | PROT_WRITE;
+          break;
+        case mode_writeread:
+          open_flags = O_RDWR | O_CREAT;
+          mmap_flags = PROT_READ | PROT_WRITE;
+          break;
+      }
+
+      p_fd = ::open(filename, open_flags);
+      if(p_fd < 0) return false;
+
+      struct stat p_stat;
+      fstat(p_fd, &p_stat);
+      p_size = p_stat.st_size;
+
+      p_handle = (uint8_t*)mmap(0, p_size, mmap_flags, MAP_SHARED, p_fd, 0);
+      if(p_handle == MAP_FAILED) {
+        p_handle = 0;
+        ::close(p_fd);
+        p_fd = -1;
+        return false;
+      }
+
+      return p_handle;
+    }
+
+    void p_close() {
+      if(p_handle) {
+        munmap(p_handle, p_size);
+        p_handle = 0;
+      }
+
+      if(p_fd >= 0) {
+        ::close(p_fd);
+        p_fd = -1;
+      }
+    }
+
+    void p_ctor() {
+      p_fd = -1;
+    }
+
+    void p_dtor() {
+      p_close();
+    }
+
+    #endif
+  };
+}
+
+#endif

snesfilter/nall/foreach.hpp

@@ -0,0 +1,31 @@
+#ifndef NALL_FOREACH_HPP
+#define NALL_FOREACH_HPP
+
+#undef foreach
+#define foreach(iter, object) \
+  for(unsigned foreach_counter = 0, foreach_limit = foreach_size(object), foreach_once = 0, foreach_broken = 0; foreach_counter < foreach_limit && foreach_broken == 0; foreach_counter++, foreach_once = 0) \
+    for(auto &iter = object[foreach_counter]; foreach_once == 0 && (foreach_broken = 1); foreach_once++, foreach_broken = 0)
+
+#include <type_traits>
+#include <nall/concept.hpp>
+#include <nall/static.hpp>
+
+namespace nall {
+  template<typename T> unsigned foreach_size(const T& object, typename mp_enable_if<has_count<T>>::type = 0) {
+    return object.count();
+  }
+
+  template<typename T> unsigned foreach_size(const T& object, typename mp_enable_if<has_length<T>>::type = 0) {
+    return object.length();
+  }
+
+  template<typename T> unsigned foreach_size(const T& object, typename mp_enable_if<has_size<T>>::type = 0) {
+    return object.size();
+  }
+
+  template<typename T> unsigned foreach_size(const T& object, typename mp_enable_if<std::is_array<T>>::type = 0) {
+    return sizeof(T) / sizeof(typename std::remove_extent<T>::type);
+  }
+}
+
+#endif

snesfilter/nall/function.hpp

@@ -0,0 +1,102 @@
+#ifndef NALL_FUNCTION_HPP
+#define NALL_FUNCTION_HPP
+
+#include <functional>
+#include <type_traits>
+
+namespace nall {
+  template<typename T> class function;
+
+  template<typename R, typename... P>
+  class function<R (P...)> {
+  private:
+    struct base1 { virtual void func1(P...) {} };
+    struct base2 { virtual void func2(P...) {} };
+    struct derived : base1, virtual base2 {};
+
+    struct data_t {
+      R (*callback)(const data_t&, P...);
+      union {
+        R (*callback_global)(P...);
+        struct {
+          R (derived::*callback_member)(P...);
+          void *object;
+        };
+      };
+    } data;
+
+    static R callback_global(const data_t &data, P... p) {
+      return data.callback_global(p...);
+    }
+
+    template<typename C>
+    static R callback_member(const data_t &data, P... p) {
+      return (((C*)data.object)->*((R (C::*&)(P...))data.callback_member))(p...);
+    }
+
+  public:
+    R operator()(P... p) const { return data.callback(data, p...); }
+    operator bool() const { return data.callback; }
+    void reset() { data.callback = 0; }
+
+    function& operator=(const function &source) { memcpy(&data, &source.data, sizeof(data_t)); return *this; }
+    function(const function &source) { operator=(source); }
+
+    //no pointer
+    function() {
+      data.callback = 0;
+    }
+
+    //symbolic link pointer (nall/dl.hpp::sym, etc)
+    function(void *callback) {
+      data.callback = callback ? &callback_global : 0;
+      data.callback_global = (R (*)(P...))callback;
+    }
+
+    //global function pointer
+    function(R (*callback)(P...)) {
+      data.callback = &callback_global;
+      data.callback_global = callback;
+    }
+
+    //member function pointer
+    template<typename C>
+    function(R (C::*callback)(P...), C *object) {
+      static_assert(sizeof data.callback_member >= sizeof callback, "callback_member is too small");
+      data.callback = &callback_member<C>;
+      (R (C::*&)(P...))data.callback_member = callback;
+      data.object = object;
+    }
+
+    //const member function pointer
+    template<typename C>
+    function(R (C::*callback)(P...) const, C *object) {
+      static_assert(sizeof data.callback_member >= sizeof callback, "callback_member is too small");
+      data.callback = &callback_member<C>;
+      (R (C::*&)(P...))data.callback_member = (R (C::*&)(P...))callback;
+      data.object = object;
+    }
+
+    //lambda function pointer
+    template<typename T>
+    function(T callback) {
+      static_assert(std::is_same<R, typename std::result_of<T(P...)>::type>::value, "lambda mismatch");
+      data.callback = &callback_global;
+      data.callback_global = (R (*)(P...))callback;
+    }
+  };
+
+  //bind functions to ease construction and assignment of function() with more than one argument
+
+  template<typename C, typename R, typename... P>
+  function<R (P...)> bind(R (C::*callback)(P...), C *object) {
+    return function<R (P...)>(callback, object);
+  }
+
+  template<typename C, typename R, typename... P>
+  function<R (P...)> bind(R (C::*callback)(P...) const, C *object) {
+    return function<R (P...)>(callback, object);
+  }
+}
+
+#endif

snesfilter/nall/input.hpp

@@ -0,0 +1,386 @@
+#ifndef NALL_INPUT_HPP
+#define NALL_INPUT_HPP
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <nall/stdint.hpp>
+#include <nall/string.hpp>
+
+namespace nall {
+
+struct Keyboard;
+Keyboard& keyboard(unsigned = 0);
+
+static const char KeyboardScancodeName[][64] = {
+  "Escape", "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", "F11", "F12",
+  "PrintScreen", "ScrollLock", "Pause", "Tilde",
+  "Num1", "Num2", "Num3", "Num4", "Num5", "Num6", "Num7", "Num8", "Num9", "Num0",
+  "Dash", "Equal", "Backspace",
+  "Insert", "Delete", "Home", "End", "PageUp", "PageDown",
+  "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
+  "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z",
+  "LeftBracket", "RightBracket", "Backslash", "Semicolon", "Apostrophe", "Comma", "Period", "Slash",
+  "Keypad1", "Keypad2", "Keypad3", "Keypad4", "Keypad5", "Keypad6", "Keypad7", "Keypad8", "Keypad9", "Keypad0",
+  "Point", "Enter", "Add", "Subtract", "Multiply", "Divide",
+  "NumLock", "CapsLock",
+  "Up", "Down", "Left", "Right",
+  "Tab", "Return", "Spacebar", "Menu",
+  "Shift", "Control", "Alt", "Super",
+};
+
+struct Keyboard {
+  const unsigned ID;
+  enum { Base = 1 };
+  enum { Count = 8, Size = 128 };
+
+  enum Scancode {
+    Escape, F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, F12,
+    PrintScreen, ScrollLock, Pause, Tilde,
+    Num1, Num2, Num3, Num4, Num5, Num6, Num7, Num8, Num9, Num0,
+    Dash, Equal, Backspace,
+    Insert, Delete, Home, End, PageUp, PageDown,
+    A, B, C, D, E, F, G, H, I, J, K, L, M,
+    N, O, P, Q, R, S, T, U, V, W, X, Y, Z,
+    LeftBracket, RightBracket, Backslash, Semicolon, Apostrophe, Comma, Period, Slash,
+    Keypad1, Keypad2, Keypad3, Keypad4, Keypad5, Keypad6, Keypad7, Keypad8, Keypad9, Keypad0,
+    Point, Enter, Add, Subtract, Multiply, Divide,
+    NumLock, CapsLock,
+    Up, Down, Left, Right,
+    Tab, Return, Spacebar, Menu,
+    Shift, Control, Alt, Super,
+    Limit,
+  };
+
+  static signed numberDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(keyboard(i).belongsTo(scancode)) return i;
+    }
+    return -1;
+  }
+
+  static signed keyDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(keyboard(i).isKey(scancode)) return scancode - keyboard(i).key(Escape);
+    }
+    return -1;
+  }
+
+  static signed modifierDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(keyboard(i).isModifier(scancode)) return scancode - keyboard(i).key(Shift);
+    }
+    return -1;
+  }
+
+  static bool isAnyKey(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(keyboard(i).isKey(scancode)) return true;
+    }
+    return false;
+  }
+
+  static bool isAnyModifier(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(keyboard(i).isModifier(scancode)) return true;
+    }
+    return false;
+  }
+
+  static uint16_t decode(const char *name) {
+    string s(name);
+    if(!strbegin(name, "KB")) return 0;
+    ltrim(s, "KB");
+    unsigned id = strunsigned(s);
+    int pos = strpos(s, "::");
+    if(pos < 0) return 0;
+    s = substr(s, pos + 2);
+    for(unsigned i = 0; i < Limit; i++) {
+      if(s == KeyboardScancodeName[i]) return Base + Size * id + i;
+    }
+    return 0;
+  }
+
+  string encode(uint16_t code) const {
+    unsigned index = 0;
+    for(unsigned i = 0; i < Count; i++) {
+      if(code >= Base + Size * i && code < Base + Size * (i + 1)) {
+        index = code - (Base + Size * i);
+        break;
+      }
+    }
+    return string() << "KB" << ID << "::" << KeyboardScancodeName[index];
+  }
+
+  uint16_t operator[](Scancode code) const { return Base + ID * Size + code; }
+  uint16_t key(unsigned id) const { return Base + Size * ID + id; }
+  bool isKey(unsigned id) const { return id >= key(Escape) && id <= key(Menu); }
+  bool isModifier(unsigned id) const { return id >= key(Shift) && id <= key(Super); }
+  bool belongsTo(uint16_t scancode) const { return isKey(scancode) || isModifier(scancode); }
+
+  Keyboard(unsigned ID_) : ID(ID_) {}
+};
+
+inline Keyboard& keyboard(unsigned id) {
+  static Keyboard kb0(0), kb1(1), kb2(2), kb3(3), kb4(4), kb5(5), kb6(6), kb7(7);
+  switch(id) { default:
+    case 0: return kb0; case 1: return kb1; case 2: return kb2; case 3: return kb3;
+    case 4: return kb4; case 5: return kb5; case 6: return kb6; case 7: return kb7;
+  }
+}
+
+static const char MouseScancodeName[][64] = {
+  "Xaxis", "Yaxis", "Zaxis",
+  "Button0", "Button1", "Button2", "Button3", "Button4", "Button5", "Button6", "Button7",
+};
+
+struct Mouse;
+Mouse& mouse(unsigned = 0);
+
+struct Mouse {
+  const unsigned ID;
+  enum { Base = Keyboard::Base + Keyboard::Size * Keyboard::Count };
+  enum { Count = 8, Size = 16 };
+  enum { Axes = 3, Buttons = 8 };
+
+  enum Scancode {
+    Xaxis, Yaxis, Zaxis,
+    Button0, Button1, Button2, Button3, Button4, Button5, Button6, Button7,
+    Limit,
+  };
+
+  static signed numberDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(mouse(i).belongsTo(scancode)) return i;
+    }
+    return -1;
+  }
+
+  static signed axisDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(mouse(i).isAxis(scancode)) return scancode - mouse(i).axis(0);
+    }
+    return -1;
+  }
+
+  static signed buttonDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(mouse(i).isButton(scancode)) return scancode - mouse(i).button(0);
+    }
+    return -1;
+  }
+
+  static bool isAnyAxis(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(mouse(i).isAxis(scancode)) return true;
+    }
+    return false;
+  }
+
+  static bool isAnyButton(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(mouse(i).isButton(scancode)) return true;
+    }
+    return false;
+  }
+
+  static uint16_t decode(const char *name) {
+    string s(name);
+    if(!strbegin(name, "MS")) return 0;
+    ltrim(s, "MS");
+    unsigned id = strunsigned(s);
+    int pos = strpos(s, "::");
+    if(pos < 0) return 0;
+    s = substr(s, pos + 2);
+    for(unsigned i = 0; i < Limit; i++) {
+      if(s == MouseScancodeName[i]) return Base + Size * id + i;
+    }
+    return 0;
+  }
+
+  string encode(uint16_t code) const {
+    unsigned index = 0;
+    for(unsigned i = 0; i < Count; i++) {
+      if(code >= Base + Size * i && code < Base + Size * (i + 1)) {
+        index = code - (Base + Size * i);
+        break;
+      }
+    }
+    return string() << "MS" << ID << "::" << MouseScancodeName[index];
+  }
+
+  uint16_t operator[](Scancode code) const { return Base + ID * Size + code; }
+  uint16_t axis(unsigned id) const { return Base + Size * ID + Xaxis + id; }
+  uint16_t button(unsigned id) const { return Base + Size * ID + Button0 + id; }
+  bool isAxis(unsigned id) const { return id >= axis(0) && id <= axis(2); }
+  bool isButton(unsigned id) const { return id >= button(0) && id <= button(7); }
+  bool belongsTo(uint16_t scancode) const { return isAxis(scancode) || isButton(scancode); }
+
+  Mouse(unsigned ID_) : ID(ID_) {}
+};
+
+inline Mouse& mouse(unsigned id) {
+  static Mouse ms0(0), ms1(1), ms2(2), ms3(3), ms4(4), ms5(5), ms6(6), ms7(7);
+  switch(id) { default:
+    case 0: return ms0; case 1: return ms1; case 2: return ms2; case 3: return ms3;
+    case 4: return ms4; case 5: return ms5; case 6: return ms6; case 7: return ms7;
+  }
+}
+
+static const char JoypadScancodeName[][64] = {
+  "Hat0", "Hat1", "Hat2", "Hat3", "Hat4", "Hat5", "Hat6", "Hat7",
+  "Axis0", "Axis1", "Axis2", "Axis3", "Axis4", "Axis5", "Axis6", "Axis7",
+  "Axis8", "Axis9", "Axis10", "Axis11", "Axis12", "Axis13", "Axis14", "Axis15",
+  "Button0", "Button1", "Button2", "Button3", "Button4", "Button5", "Button6", "Button7",
+  "Button8", "Button9", "Button10", "Button11", "Button12", "Button13", "Button14", "Button15",
+  "Button16", "Button17", "Button18", "Button19", "Button20", "Button21", "Button22", "Button23",
+  "Button24", "Button25", "Button26", "Button27", "Button28", "Button29", "Button30", "Button31",
+};
+
+struct Joypad;
+Joypad& joypad(unsigned = 0);
+
+struct Joypad {
+  const unsigned ID;
+  enum { Base = Mouse::Base + Mouse::Size * Mouse::Count };
+  enum { Count = 8, Size = 64 };
+  enum { Hats = 8, Axes = 16, Buttons = 32 };
+
+  enum Scancode {
+    Hat0, Hat1, Hat2, Hat3, Hat4, Hat5, Hat6, Hat7,
+    Axis0, Axis1, Axis2, Axis3, Axis4, Axis5, Axis6, Axis7,
+    Axis8, Axis9, Axis10, Axis11, Axis12, Axis13, Axis14, Axis15,
+    Button0, Button1, Button2, Button3, Button4, Button5, Button6, Button7,
+    Button8, Button9, Button10, Button11, Button12, Button13, Button14, Button15,
+    Button16, Button17, Button18, Button19, Button20, Button21, Button22, Button23,
+    Button24, Button25, Button26, Button27, Button28, Button29, Button30, Button31,
+    Limit,
+  };
+
+  enum Hat { HatCenter = 0, HatUp = 1, HatRight = 2, HatDown = 4, HatLeft = 8 };
+
+  static signed numberDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).belongsTo(scancode)) return i;
+    }
+    return -1;
+  }
+
+  static signed hatDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).isHat(scancode)) return scancode - joypad(i).hat(0);
+    }
+    return -1;
+  }
+
+  static signed axisDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).isAxis(scancode)) return scancode - joypad(i).axis(0);
+    }
+    return -1;
+  }
+
+  static signed buttonDecode(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).isButton(scancode)) return scancode - joypad(i).button(0);
+    }
+    return -1;
+  }
+
+  static bool isAnyHat(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).isHat(scancode)) return true;
+    }
+    return false;
+  }
+
+  static bool isAnyAxis(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).isAxis(scancode)) return true;
+    }
+    return false;
+  }
+
+  static bool isAnyButton(uint16_t scancode) {
+    for(unsigned i = 0; i < Count; i++) {
+      if(joypad(i).isButton(scancode)) return true;
+    }
+    return false;
+  }
+
+  static uint16_t decode(const char *name) {
+    string s(name);
+    if(!strbegin(name, "JP")) return 0;
+    ltrim(s, "JP");
+    unsigned id = strunsigned(s);
+    int pos = strpos(s, "::");
+    if(pos < 0) return 0;
+    s = substr(s, pos + 2);
+    for(unsigned i = 0; i < Limit; i++) {
+      if(s == JoypadScancodeName[i]) return Base + Size * id + i;
+    }
+    return 0;
+  }
+
+  string encode(uint16_t code) const {
+    unsigned index = 0;
+    for(unsigned i = 0; i < Count; i++) {
+      if(code >= Base + Size * i && code < Base + Size * (i + 1)) {
+        index = code - (Base + Size * i);
+      }
+    }
+    return string() << "JP" << ID << "::" << JoypadScancodeName[index];
+  }
+
+  uint16_t operator[](Scancode code) const { return Base + ID * Size + code; }
+  uint16_t hat(unsigned id) const { return Base + Size * ID + Hat0 + id; }
+  uint16_t axis(unsigned id) const { return Base + Size * ID + Axis0 + id; }
+  uint16_t button(unsigned id) const { return Base + Size * ID + Button0 + id; }
+  bool isHat(unsigned id) const { return id >= hat(0) && id <= hat(7); }
+  bool isAxis(unsigned id) const { return id >= axis(0) && id <= axis(15); }
+  bool isButton(unsigned id) const { return id >= button(0) && id <= button(31); }
+  bool belongsTo(uint16_t scancode) const { return isHat(scancode) || isAxis(scancode) || isButton(scancode); }
+
+  Joypad(unsigned ID_) : ID(ID_) {}
+};
+
+inline Joypad& joypad(unsigned id) {
+  static Joypad jp0(0), jp1(1), jp2(2), jp3(3), jp4(4), jp5(5), jp6(6), jp7(7);
+  switch(id) { default:
+    case 0: return jp0; case 1: return jp1; case 2: return jp2; case 3: return jp3;
+    case 4: return jp4; case 5: return jp5; case 6: return jp6; case 7: return jp7;
+  }
+}
+
+struct Scancode {
+  enum { None = 0, Limit = Joypad::Base + Joypad::Size * Joypad::Count };
+
+  static uint16_t decode(const char *name) {
+    uint16_t code;
+    code = Keyboard::decode(name);
+    if(code) return code;
+    code = Mouse::decode(name);
+    if(code) return code;
+    code = Joypad::decode(name);
+    if(code) return code;
+    return None;
+  }
+
+  static string encode(uint16_t code) {
+    for(unsigned i = 0; i < Keyboard::Count; i++) {
+      if(keyboard(i).belongsTo(code)) return keyboard(i).encode(code);
+    }
+    for(unsigned i = 0; i < Mouse::Count; i++) {
+      if(mouse(i).belongsTo(code)) return mouse(i).encode(code);
+    }
+    for(unsigned i = 0; i < Joypad::Count; i++) {
+      if(joypad(i).belongsTo(code)) return joypad(i).encode(code);
+    }
+    return "None";
+  }
+};
+
+}
+
+#endif

snesfilter/nall/lzss.hpp

@@ -0,0 +1,81 @@
+#ifndef NALL_LZSS_HPP
+#define NALL_LZSS_HPP
+
+#include <nall/array.hpp>
+#include <nall/new.hpp>
+#include <nall/stdint.hpp>
+
+namespace nall {
+  class lzss {
+  public:
+    static bool encode(uint8_t *&output, unsigned &outlength, const uint8_t *input, unsigned inlength) {
+      output = new(zeromemory) uint8_t[inlength * 9 / 8 + 9];
+
+      unsigned i = 0, o = 0;
+      while(i < inlength) {
+        unsigned flagoffset = o++;
+        uint8_t flag = 0x00;
+
+        for(unsigned b = 0; b < 8 && i < inlength; b++) {
+          unsigned longest = 0, pointer;
+          for(unsigned index = 1; index < 4096; index++) {
+            unsigned count = 0;
+            while(true) {
+              if(count >= 15 + 3) break;                               //verify pattern match is not longer than max length
+              if(i + count >= inlength) break;                         //verify pattern match does not read past end of input
+              if(i + count < index) break;                             //verify read is not before start of input
+              if(input[i + count] != input[i + count - index]) break;  //verify pattern still matches
+              count++;
+            }
+
+            if(count > longest) {
+              longest = count;
+              pointer = index;
+            }
+          }
+
+          if(longest < 3) output[o++] = input[i++];
+          else {
+            flag |= 1 << b;
+            uint16_t x = ((longest - 3) << 12) + pointer;
+            output[o++] = x;
+            output[o++] = x >> 8;
+            i += longest;
+          }
+        }
+
+        output[flagoffset] = flag;
+      }
+
+      outlength = o;
+      return true;
+    }
+
+    static bool decode(uint8_t *&output, const uint8_t *input, unsigned length) {
+      output = new(zeromemory) uint8_t[length];
+
+      unsigned i = 0, o = 0;
+      while(o < length) {
+        uint8_t flag = input[i++];
+
+        for(unsigned b = 0; b < 8 && o < length; b++) {
+          if(!(flag & (1 << b))) output[o++] = input[i++];
+          else {
+            uint16_t offset = input[i++];
+            offset += input[i++] << 8;
+            uint16_t lookuplength = (offset >> 12) + 3;
+            offset &= 4095;
+            for(unsigned index = 0; index < lookuplength && o + index < length; index++) {
+              output[o + index] = output[o + index - offset];
+            }
+            o += lookuplength;
+          }
+        }
+      }
+
+      return true;
+    }
+  };
+}
+
+#endif

snesfilter/nall/moduloarray.hpp

@@ -0,0 +1,40 @@
+#ifndef NALL_MODULO_HPP
+#define NALL_MODULO_HPP
+
+#include <nall/serializer.hpp>
+
+namespace nall {
+  template<typename T, int size> class modulo_array {
+  public:
+    inline T operator[](int index) const {
+      return buffer[size + index];
+    }
+
+    inline T read(int index) const {
+      return buffer[size + index];
+    }
+
+    inline void write(unsigned index, const T value) {
+      buffer[index] =
+      buffer[index + size] =
+      buffer[index + size + size] = value;
+    }
+
+    void serialize(serializer &s) {
+      s.array(buffer, size * 3);
+    }
+
+    modulo_array() {
+      buffer = new T[size * 3]();
+    }
+
+    ~modulo_array() {
+      delete[] buffer;
+    }
+
+  private:
+    T *buffer;
+  };
+}
+
+#endif

snesfilter/nall/platform.hpp

@@ -0,0 +1,80 @@
+#ifndef NALL_PLATFORM_HPP
+#define NALL_PLATFORM_HPP
+
+#include <nall/utf8.hpp>
+
+//=========================
+//standard platform headers
+//=========================
+
+#include <limits>
+
+#include <assert.h>
+#include <limits.h>
+#include <math.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#if defined(_WIN32)
+  #include <io.h>
+  #include <direct.h>
+  #include <shlobj.h>
+  #undef interface
+#else
+  #include <unistd.h>
+  #include <pwd.h>
+  #include <sys/stat.h>
+#endif
+
+//==================
+//warning supression
+//==================
+
+//Visual C++
+#if defined(_MSC_VER)
+  //disable libc "deprecation" warnings
+  #pragma warning(disable:4996)
+#endif
+
+//================
+//POSIX compliance
+//================
+
+#if defined(_MSC_VER)
+  #define PATH_MAX  _MAX_PATH
+  #define va_copy(dest, src)  ((dest) = (src))
+#endif
+
+#if defined(_WIN32)
+  #define getcwd      _getcwd
+  #define ftruncate   _chsize
+  #define putenv      _putenv
+  #define mkdir(n, m) _wmkdir(nall::utf16_t(n))
+  #define rmdir       _rmdir
+  #define vsnprintf   _vsnprintf
+  #define usleep(n)   Sleep(n / 1000)
+#endif
+
+//================
+//inline expansion
+//================
+
+#if defined(__GNUC__)
+  #define noinline      __attribute__((noinline))
+  #define inline        inline
+  #define alwaysinline  inline __attribute__((always_inline))
+#elif defined(_MSC_VER)
+  #define noinline      __declspec(noinline)
+  #define inline        inline
+  #define alwaysinline  inline __forceinline
+#else
+  #define noinline
+  #define inline        inline
+  #define alwaysinline  inline
+#endif
+
+#endif
+

snesfilter/nall/priorityqueue.hpp

@@ -0,0 +1,109 @@
+#ifndef NALL_PRIORITYQUEUE_HPP
+#define NALL_PRIORITYQUEUE_HPP
+
+#include <limits>
+#include <nall/function.hpp>
+#include <nall/serializer.hpp>
+#include <nall/utility.hpp>
+
+namespace nall {
+  template<typename type_t> void priority_queue_nocallback(type_t) {}
+
+  //priority queue implementation using binary min-heap array;
+  //does not require normalize() function.
+  //O(1)     find   (tick)
+  //O(log n) insert (enqueue)
+  //O(log n) remove (dequeue)
+  template<typename type_t> class priority_queue {
+  public:
+    inline void tick(unsigned ticks) {
+      basecounter += ticks;
+      while(heapsize && gte(basecounter, heap[0].counter)) callback(dequeue());
+    }
+
+    //counter is relative to current time (eg enqueue(64, ...) fires in 64 ticks);
+    //counter cannot exceed std::numeric_limits<unsigned>::max() >> 1.
+    void enqueue(unsigned counter, type_t event) {
+      unsigned child = heapsize++;
+      counter += basecounter;
+
+      while(child) {
+        unsigned parent = (child - 1) >> 1;
+        if(gte(counter, heap[parent].counter)) break;
+
+        heap[child].counter = heap[parent].counter;
+        heap[child].event = heap[parent].event;
+        child = parent;
+      }
+
+      heap[child].counter = counter;
+      heap[child].event = event;
+    }
+
+    type_t dequeue() {
+      type_t event(heap[0].event);
+      unsigned parent = 0;
+      unsigned counter = heap[--heapsize].counter;
+
+      while(true) {
+        unsigned child = (parent << 1) + 1;
+        if(child >= heapsize) break;
+        if(child + 1 < heapsize && gte(heap[child].counter, heap[child + 1].counter)) child++;
+        if(gte(heap[child].counter, counter)) break;
+
+        heap[parent].counter = heap[child].counter;
+        heap[parent].event = heap[child].event;
+        parent = child;
+      }
+
+      heap[parent].counter = counter;
+      heap[parent].event = heap[heapsize].event;
+      return event;
+    }
+
+    void reset() {
+      basecounter = 0;
+      heapsize = 0;
+    }
+
+    void serialize(serializer &s) {
+      s.integer(basecounter);
+      s.integer(heapsize);
+      for(unsigned n = 0; n < heapcapacity; n++) {
+        s.integer(heap[n].counter);
+        s.integer(heap[n].event);
+      }
+    }
+
+    priority_queue(unsigned size, function<void (type_t)> callback_ = &priority_queue_nocallback<type_t>)
+    : callback(callback_) {
+      heap = new heap_t[size];
+      heapcapacity = size;
+      reset();
+    }
+
+    ~priority_queue() {
+      delete[] heap;
+    }
+
+    priority_queue& operator=(const priority_queue&) = delete;
+    priority_queue(const priority_queue&) = delete;
+
+  private:
+    function<void (type_t)> callback;
+    unsigned basecounter;
+    unsigned heapsize;
+    unsigned heapcapacity;
+    struct heap_t {
+      unsigned counter;
+      type_t event;
+    } *heap;
+
+    //return true if x is greater than or equal to y
+    inline bool gte(unsigned x, unsigned y) {
+      return x - y < (std::numeric_limits<unsigned>::max() >> 1);
+    }
+  };
+}
+
+#endif

snesfilter/nall/property.hpp

@@ -0,0 +1,91 @@
+#ifndef NALL_PROPERTY_HPP
+#define NALL_PROPERTY_HPP
+
+//nall::property implements ownership semantics into container classes
+//example: property<owner>::readonly<type> implies that only owner has full
+//access to type; and all other code has readonly access.
+//
+//this code relies on extended friend semantics from C++0x to work, as it
+//declares a friend class via a template paramter. it also exploits a bug in
+//G++ 4.x to work even in C++98 mode.
+//
+//if compiling elsewhere, simply remove the friend class and private semantics
+
+//property can be used either of two ways:
+//struct foo {
+//  property<foo>::readonly<bool> x;
+//  property<foo>::readwrite<int> y;
+//};
+//-or-
+//struct foo : property<foo> {
+//  readonly<bool> x;
+//  readwrite<int> y;
+//};
+
+//return types are const T& (byref) instead fo T (byval) to avoid major speed
+//penalties for objects with expensive copy constructors
+
+//operator-> provides access to underlying object type:
+//readonly<Object> foo;
+//foo->bar();
+//... will call Object::bar();
+
+//operator='s reference is constant so as to avoid leaking a reference handle
+//that could bypass access restrictions
+
+//both constant and non-constant operators are provided, though it may be
+//necessary to cast first, for instance:
+//struct foo : property<foo> { readonly<int> bar; } object;
+//int main() { int value = const_cast<const foo&>(object); }
+
+//writeonly is useful for objects that have non-const reads, but const writes.
+//however, to avoid leaking handles, the interface is very restricted. the only
+//way to write is via operator=, which requires conversion via eg copy
+//constructor. example:
+//struct foo {
+//  foo(bool value) { ... }
+//};
+//writeonly<foo> bar;
+//bar = true;
+
+namespace nall {
+  template<typename C> struct property {
+    template<typename T> struct traits { typedef T type; };
+
+    template<typename T> struct readonly {
+      const T* operator->() const { return &value; }
+      const T& operator()() const { return value; }
+      operator const T&() const { return value; }
+    private:
+      T* operator->() { return &value; }
+      operator T&() { return value; }
+      const T& operator=(const T& value_) { return value = value_; }
+      T value;
+      friend class traits<C>::type;
+    };
+
+    template<typename T> struct writeonly {
+      void operator=(const T& value_) { value = value_; }
+    private:
+      const T* operator->() const { return &value; }
+      const T& operator()() const { return value; }
+      operator const T&() const { return value; }
+      T* operator->() { return &value; }
+      operator T&() { return value; }
+      T value;
+      friend class traits<C>::type;
+    };
+
+    template<typename T> struct readwrite {
+      const T* operator->() const { return &value; }
+      const T& operator()() const { return value; }
+      operator const T&() const { return value; }
+      T* operator->() { return &value; }
+      operator T&() { return value; }
+      const T& operator=(const T& value_) { return value = value_; }
+      T value;
+    };
+  };
+}
+
+#endif

snesfilter/nall/qt/Makefile

@@ -0,0 +1,55 @@
+# requires nall/Makefile
+
+# imports:
+# $(qtlibs) -- list of Qt components to link against
+
+# exports the following symbols:
+# $(moc)   -- meta-object compiler
+# $(rcc)   -- resource compiler
+# $(qtinc) -- includes for compiling
+# $(qtlib) -- libraries for linking
+
+ifeq ($(moc),)
+moc := moc
+endif
+
+ifeq ($(rcc),)
+rcc := rcc
+endif
+
+ifeq ($(platform),x)
+  qtinc := `pkg-config --cflags $(qtlibs)`
+  qtlib := `pkg-config --libs $(qtlibs)`
+else ifeq ($(platform),osx)
+  qtinc := $(foreach lib,$(qtlibs),-I/Library/Frameworks/$(lib).framework/Versions/4/Headers)
+
+  qtlib := -L/Library/Frameworks
+  qtlib += $(foreach lib,$(qtlibs),-framework $(lib))
+  qtlib += -framework Carbon
+  qtlib += -framework Cocoa
+  qtlib += -framework OpenGL
+  qtlib += -framework AppKit
+  qtlib += -framework ApplicationServices
+else ifeq ($(platform),win)
+  ifeq ($(qtpath),)
+    # find Qt install directory from PATH environment variable
+    qtpath := $(foreach path,$(subst ;, ,$(PATH)),$(if $(wildcard $(path)/$(moc).exe),$(path)))
+    qtpath := $(strip $(qtpath))
+    qtpath := $(subst \,/,$(qtpath))
+    qtpath := $(patsubst %/bin,%,$(qtpath))
+  endif
+
+  qtinc := -I$(qtpath)/include
+  qtinc += $(foreach lib,$(qtlibs),-I$(qtpath)/include/$(lib))
+
+  qtlib := -L$(qtpath)/lib
+  qtlib += -L$(qtpath)/plugins/imageformats
+
+  qtlib += $(foreach lib,$(qtlibs),-l$(lib)4)
+  qtlib += -lmingw32 -lqtmain -lcomdlg32 -loleaut32 -limm32 -lwinmm
+  qtlib += -lwinspool -lmsimg32 -lole32 -ladvapi32 -lws2_32 -luuid -lgdi32
+  qtlib += $(foreach lib,$(qtlibs),-l$(lib)4)
+
+  # optional image-file support:
+  # qtlib += -lqjpeg -lqmng
+endif

snesfilter/nall/qt/check-action.moc.hpp

@@ -0,0 +1,41 @@
+#ifndef NALL_QT_CHECKACTION_HPP
+#define NALL_QT_CHECKACTION_HPP
+
+namespace nall {
+
+class CheckAction : public QAction {
+  Q_OBJECT
+
+public:
+  bool isChecked() const;
+  void setChecked(bool);
+  void toggleChecked();
+  CheckAction(const QString&, QObject*);
+
+protected slots:
+
+protected:
+  bool checked;
+};
+
+inline bool CheckAction::isChecked() const {
+  return checked;
+}
+
+inline void CheckAction::setChecked(bool checked_) {
+  checked = checked_;
+  if(checked) setIcon(QIcon(":/16x16/item-check-on.png"));
+  else setIcon(QIcon(":/16x16/item-check-off.png"));
+}
+
+inline void CheckAction::toggleChecked() {
+  setChecked(!isChecked());
+}
+
+inline CheckAction::CheckAction(const QString &text, QObject *parent) : QAction(text, parent) {
+  setChecked(false);
+}
+
+}
+
+#endif

snesfilter/nall/qt/concept.hpp

@@ -0,0 +1,10 @@
+#ifndef NALL_QT_CONCEPT_HPP
+#define NALL_QT_CONCEPT_HPP
+
+#include <nall/concept.hpp>
+
+namespace nall {
+  template<typename T> struct has_count<QList<T>> { enum { value = true }; };
+}
+
+#endif

snesfilter/nall/qt/file-dialog.moc.hpp

@@ -0,0 +1,392 @@
+#ifndef NALL_QT_FILEDIALOG_HPP
+#define NALL_QT_FILEDIALOG_HPP
+
+#include <nall/platform.hpp>
+#include <nall/string.hpp>
+#include <nall/qt/window.moc.hpp>
+
+namespace nall {
+
+class FileDialog;
+
+class NewFolderDialog : public Window {
+  Q_OBJECT
+
+public:
+  void show();
+  NewFolderDialog(FileDialog*);
+
+protected slots:
+  void createFolderAction();
+
+protected:
+  FileDialog *parent;
+  QVBoxLayout *layout;
+  QLineEdit *folderNameEdit;
+  QHBoxLayout *controlLayout;
+  QPushButton *okButton;
+  QPushButton *cancelButton;
+};
+
+class FileView : public QListView {
+  Q_OBJECT
+
+protected:
+  void keyPressEvent(QKeyEvent*);
+
+signals:
+  void changed(const QModelIndex&);
+  void browseUp();
+
+protected slots:
+  void currentChanged(const QModelIndex&, const QModelIndex&);
+};
+
+class FileDialog : public Window {
+  Q_OBJECT
+
+public:
+  void showLoad();
+  void showSave();
+  void showFolder();
+
+  void setPath(string path);
+  void setNameFilters(const string &filters);
+  FileDialog();
+
+signals:
+  void changed(const string&);
+  void activated(const string&);
+  void accepted(const string&);
+  void rejected();
+
+protected slots:
+  void fileViewChange(const QModelIndex&);
+  void fileViewActivate(const QModelIndex&);
+  void pathBoxChanged();
+  void filterBoxChanged();
+  void createNewFolder();
+  void browseUp();
+  void acceptAction();
+  void rejectAction();
+
+protected:
+  NewFolderDialog *newFolderDialog;
+  QVBoxLayout *layout;
+  QHBoxLayout *navigationLayout;
+  QComboBox *pathBox;
+  QPushButton *newFolderButton;
+  QPushButton *upFolderButton;
+  QHBoxLayout *browseLayout;
+  QFileSystemModel *fileSystemModel;
+  FileView *fileView;
+  QGroupBox *previewFrame;
+  QLineEdit *fileNameEdit;
+  QHBoxLayout *controlLayout;
+  QComboBox *filterBox;
+  QPushButton *optionsButton;
+  QPushButton *acceptButton;
+  QPushButton *rejectButton;
+  bool lock;
+  void createFolderAction(const string &name);
+  void closeEvent(QCloseEvent*);
+
+  friend class NewFolderDialog;
+};
+
+inline void NewFolderDialog::show() {
+  folderNameEdit->setText("");
+  Window::show();
+  folderNameEdit->setFocus();
+}
+
+inline void NewFolderDialog::createFolderAction() {
+  string name = folderNameEdit->text().toUtf8().constData();
+  if(name == "") {
+    folderNameEdit->setFocus();
+  } else {
+    parent->createFolderAction(name);
+    close();
+  }
+}
+
+inline NewFolderDialog::NewFolderDialog(FileDialog *fileDialog) : parent(fileDialog) {
+  setMinimumWidth(240);
+  setWindowTitle("Create New Folder");
+
+  layout = new QVBoxLayout;
+  layout->setAlignment(Qt::AlignTop);
+  layout->setMargin(5);
+  layout->setSpacing(5);
+  setLayout(layout);
+
+  folderNameEdit = new QLineEdit;
+  layout->addWidget(folderNameEdit);
+
+  controlLayout = new QHBoxLayout;
+  controlLayout->setAlignment(Qt::AlignRight);
+  layout->addLayout(controlLayout);
+
+  okButton = new QPushButton("Ok");
+  controlLayout->addWidget(okButton);
+
+  cancelButton = new QPushButton("Cancel");
+  controlLayout->addWidget(cancelButton);
+
+  connect(folderNameEdit, SIGNAL(returnPressed()), this, SLOT(createFolderAction()));
+  connect(okButton, SIGNAL(released()), this, SLOT(createFolderAction()));
+  connect(cancelButton, SIGNAL(released()), this, SLOT(close()));
+}
+
+inline void FileView::currentChanged(const QModelIndex &current, const QModelIndex &previous) {
+  QAbstractItemView::currentChanged(current, previous);
+  emit changed(current);
+}
+
+inline void FileView::keyPressEvent(QKeyEvent *event) {
+  //enhance consistency: force OS X to act like Windows and Linux; enter = activate item
+  if(event->key() == Qt::Key_Return || event->key() == Qt::Key_Enter) {
+    emit activated(currentIndex());
+    return;
+  }
+
+  //simulate popular file manager behavior; backspace = go up one directory
+  if(event->key() == Qt::Key_Backspace) {
+    emit browseUp();
+    return;
+  }
+
+  //fallback: unrecognized keypresses get handled by the widget itself
+  QListView::keyPressEvent(event);
+}
+
+inline void FileDialog::showLoad() {
+  acceptButton->setText("Load");
+  fileNameEdit->hide();
+  filterBox->show();
+  show();
+}
+
+inline void FileDialog::showSave() {
+  acceptButton->setText("Save");
+  fileNameEdit->show();
+  filterBox->show();
+  show();
+}
+
+inline void FileDialog::showFolder() {
+  acceptButton->setText("Choose");
+  fileNameEdit->hide();
+  filterBox->hide();
+  setNameFilters("Folders ()");
+  show();
+}
+
+inline void FileDialog::fileViewChange(const QModelIndex &index) {
+  string path = fileSystemModel->filePath(index).toUtf8().constData();
+  if(path == fileSystemModel->rootPath().toUtf8().constData()) path = "";
+  fileNameEdit->setText(notdir(path));
+  emit changed(path);
+}
+
+inline void FileDialog::fileViewActivate(const QModelIndex &index) {
+  string path = fileSystemModel->filePath(index).toUtf8().constData();
+  if(fileSystemModel->isDir(index)) {
+    emit activated(path);
+    setPath(path);
+  } else {
+    emit activated(path);
+    close();
+  }
+}
+
+inline void FileDialog::pathBoxChanged() {
+  if(lock) return;
+  setPath(pathBox->currentText().toUtf8().constData());
+}
+
+inline void FileDialog::filterBoxChanged() {
+  if(lock) return;
+  string filters = filterBox->currentText().toUtf8().constData();
+  if(filters.length() == 0) {
+    fileSystemModel->setNameFilters(QStringList() << "*");
+  } else {
+    filters = substr(filters, strpos(filters, "("));
+    ltrim(filters, "(");
+    rtrim(filters, ")");
+    lstring part;
+    part.split(" ", filters);
+    QStringList list;
+    for(unsigned i = 0; i < part.size(); i++) list << part[i];
+    fileSystemModel->setNameFilters(list);
+  }
+}
+
+inline void FileDialog::createNewFolder() {
+  newFolderDialog->show();
+}
+
+inline void FileDialog::browseUp() {
+  if(pathBox->count() > 1) pathBox->setCurrentIndex(1);
+}
+
+inline void FileDialog::setPath(string path) {
+  lock = true;
+  newFolderDialog->close();
+
+  if(QDir(path).exists()) {
+    newFolderButton->setEnabled(true);
+  } else {
+    newFolderButton->setEnabled(false);
+    path = "";
+  }
+
+  fileSystemModel->setRootPath(path);
+  fileView->setRootIndex(fileSystemModel->index(path));
+  fileView->setCurrentIndex(fileView->rootIndex());
+  fileView->setFocus();
+
+  pathBox->clear();
+  if(path.length() > 0) {
+    QDir directory(path);
+    while(true) {
+      pathBox->addItem(directory.absolutePath());
+      if(directory.isRoot()) break;
+      directory.cdUp();
+    }
+  }
+  pathBox->addItem("<root>");
+  fileNameEdit->setText("");
+
+  lock = false;
+}
+
+inline void FileDialog::setNameFilters(const string &filters) {
+  lock = true;
+
+  lstring list;
+  list.split("\n", filters);
+
+  filterBox->clear();
+  for(unsigned i = 0; i < list.size(); i++) {
+    filterBox->addItem(list[i]);
+  }
+
+  lock = false;
+  filterBoxChanged();
+}
+
+inline void FileDialog::acceptAction() {
+  string path = fileSystemModel->rootPath().toUtf8().constData();
+  path << "/" << notdir(fileNameEdit->text().toUtf8().constData());
+  rtrim(path, "/");
+  if(QDir(path).exists()) {
+    emit accepted(path);
+    setPath(path);
+  } else {
+    emit accepted(path);
+    close();
+  }
+}
+
+inline void FileDialog::rejectAction() {
+  emit rejected();
+  close();
+}
+
+inline void FileDialog::createFolderAction(const string &name) {
+  string path = fileSystemModel->rootPath().toUtf8().constData();
+  path << "/" << notdir(name);
+  mkdir(path, 0755);
+}
+
+inline void FileDialog::closeEvent(QCloseEvent *event) {
+  newFolderDialog->close();
+  Window::closeEvent(event);
+}
+
+inline FileDialog::FileDialog() {
+  newFolderDialog = new NewFolderDialog(this);
+  resize(640, 360);
+
+  layout = new QVBoxLayout;
+  layout->setMargin(5);
+  layout->setSpacing(5);
+  setLayout(layout);
+
+  navigationLayout = new QHBoxLayout;
+  layout->addLayout(navigationLayout);
+
+  pathBox = new QComboBox;
+  pathBox->setEditable(true);
+  pathBox->setMinimumContentsLength(16);
+  pathBox->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLength);
+  pathBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+  navigationLayout->addWidget(pathBox);
+
+  newFolderButton = new QPushButton;
+  newFolderButton->setIconSize(QSize(16, 16));
+  newFolderButton->setIcon(QIcon(":/16x16/folder-new.png"));
+  navigationLayout->addWidget(newFolderButton);
+
+  upFolderButton = new QPushButton;
+  upFolderButton->setIconSize(QSize(16, 16));
+  upFolderButton->setIcon(QIcon(":/16x16/go-up.png"));
+  navigationLayout->addWidget(upFolderButton);
+
+  browseLayout = new QHBoxLayout;
+  layout->addLayout(browseLayout);
+
+  fileSystemModel = new QFileSystemModel;
+  fileSystemModel->setFilter(QDir::AllDirs | QDir::Files | QDir::NoDotAndDotDot);
+  fileSystemModel->setNameFilterDisables(false);
+
+  fileView = new FileView;
+  fileView->setMinimumWidth(320);
+  fileView->setModel(fileSystemModel);
+  fileView->setIconSize(QSize(16, 16));
+  browseLayout->addWidget(fileView);
+
+  previewFrame = new QGroupBox;
+  previewFrame->hide();
+  browseLayout->addWidget(previewFrame);
+
+  fileNameEdit = new QLineEdit;
+  layout->addWidget(fileNameEdit);
+
+  controlLayout = new QHBoxLayout;
+  controlLayout->setAlignment(Qt::AlignRight);
+  layout->addLayout(controlLayout);
+
+  filterBox = new QComboBox;
+  filterBox->setMinimumContentsLength(16);
+  filterBox->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLength);
+  filterBox->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
+  controlLayout->addWidget(filterBox);
+
+  optionsButton = new QPushButton("Options");
+  optionsButton->hide();
+  controlLayout->addWidget(optionsButton);
+
+  acceptButton = new QPushButton("Ok");
+  controlLayout->addWidget(acceptButton);
+
+  rejectButton = new QPushButton("Cancel");
+  controlLayout->addWidget(rejectButton);
+
+  lock = false;
+  connect(pathBox, SIGNAL(currentIndexChanged(int)), this, SLOT(pathBoxChanged()));
+  connect(newFolderButton, SIGNAL(released()), this, SLOT(createNewFolder()));
+  connect(upFolderButton, SIGNAL(released()), this, SLOT(browseUp()));
+  connect(fileView, SIGNAL(changed(const QModelIndex&)), this, SLOT(fileViewChange(const QModelIndex&)));
+  connect(fileView, SIGNAL(activated(const QModelIndex&)), this, SLOT(fileViewActivate(const QModelIndex&)));
+  connect(fileView, SIGNAL(browseUp()), this, SLOT(browseUp()));
+  connect(fileNameEdit, SIGNAL(returnPressed()), this, SLOT(acceptAction()));
+  connect(filterBox, SIGNAL(currentIndexChanged(int)), this, SLOT(filterBoxChanged()));
+  connect(acceptButton, SIGNAL(released()), this, SLOT(acceptAction()));
+  connect(rejectButton, SIGNAL(released()), this, SLOT(rejectAction()));
+}
+
+}
+
+#endif

snesfilter/nall/qt/hex-editor.moc.hpp

@@ -0,0 +1,173 @@
+#ifndef NALL_QT_HEXEDITOR_HPP
+#define NALL_QT_HEXEDITOR_HPP
+
+#include <nall/function.hpp>
+#include <nall/stdint.hpp>
+#include <nall/string.hpp>
+
+namespace nall {
+
+class HexEditor : public QTextEdit {
+  Q_OBJECT
+
+public:
+  function<uint8_t (unsigned)> reader;
+  function<void (unsigned, uint8_t)> writer;
+
+  void setColumns(unsigned columns);
+  void setRows(unsigned rows);
+  void setOffset(unsigned offset);
+  void setSize(unsigned size);
+  unsigned lineWidth() const;
+  void refresh();
+
+  HexEditor();
+
+protected slots:
+  void scrolled();
+
+protected:
+  QHBoxLayout *layout;
+  QScrollBar *scrollBar;
+  unsigned editorColumns;
+  unsigned editorRows;
+  unsigned editorOffset;
+  unsigned editorSize;
+  bool lock;
+
+  void keyPressEvent(QKeyEvent*);
+};
+
+inline void HexEditor::keyPressEvent(QKeyEvent *event) {
+  QTextCursor cursor = textCursor();
+  unsigned x = cursor.position() % lineWidth();
+  unsigned y = cursor.position() / lineWidth();
+
+  int hexCode = -1;
+  switch(event->key()) {
+    case Qt::Key_0: hexCode =  0; break;
+    case Qt::Key_1: hexCode =  1; break;
+    case Qt::Key_2: hexCode =  2; break;
+    case Qt::Key_3: hexCode =  3; break;
+    case Qt::Key_4: hexCode =  4; break;
+    case Qt::Key_5: hexCode =  5; break;
+    case Qt::Key_6: hexCode =  6; break;
+    case Qt::Key_7: hexCode =  7; break;
+    case Qt::Key_8: hexCode =  8; break;
+    case Qt::Key_9: hexCode =  9; break;
+    case Qt::Key_A: hexCode = 10; break;
+    case Qt::Key_B: hexCode = 11; break;
+    case Qt::Key_C: hexCode = 12; break;
+    case Qt::Key_D: hexCode = 13; break;
+    case Qt::Key_E: hexCode = 14; break;
+    case Qt::Key_F: hexCode = 15; break;
+  }
+
+  if(cursor.hasSelection() == false && hexCode != -1) {
+    bool cursorOffsetValid = (x >= 11 && ((x - 11) % 3) != 2);
+    if(cursorOffsetValid) {
+      bool nibble = (x - 11) % 3;  //0 = top nibble, 1 = bottom nibble
+      unsigned cursorOffset = y * editorColumns + ((x - 11) / 3);
+      unsigned effectiveOffset = editorOffset + cursorOffset;
+      if(effectiveOffset >= editorSize) effectiveOffset %= editorSize;
+
+      uint8_t data = reader ? reader(effectiveOffset) : 0x00;
+      data &= (nibble == 0 ? 0x0f : 0xf0);
+      data |= (nibble == 0 ? (hexCode << 4) : (hexCode << 0));
+      if(writer) writer(effectiveOffset, data);
+      refresh();
+
+      cursor.setPosition(y * lineWidth() + x + 1);  //advance cursor
+      setTextCursor(cursor);
+    }
+  } else {
+    //allow navigation keys to move cursor, but block text input
+    setTextInteractionFlags(Qt::TextSelectableByKeyboard | Qt::TextSelectableByMouse);
+    QTextEdit::keyPressEvent(event);
+    setTextInteractionFlags(Qt::TextEditorInteraction);
+  }
+}
+
+inline void HexEditor::setColumns(unsigned columns) {
+  editorColumns = columns;
+}
+
+inline void HexEditor::setRows(unsigned rows) {
+  editorRows = rows;
+  scrollBar->setPageStep(editorRows);
+}
+
+inline void HexEditor::setOffset(unsigned offset) {
+  lock = true;
+  editorOffset = offset;
+  scrollBar->setSliderPosition(editorOffset / editorColumns);
+  lock = false;
+}
+
+inline void HexEditor::setSize(unsigned size) {
+  editorSize = size;
+  bool indivisible = (editorSize % editorColumns) != 0;  //add one for incomplete row
+  scrollBar->setRange(0, editorSize / editorColumns + indivisible - editorRows);
+}
+
+inline unsigned HexEditor::lineWidth() const {
+  return 11 + 3 * editorColumns;
+}
+
+inline void HexEditor::refresh() {
+  string output;
+  char temp[256];
+  unsigned offset = editorOffset;
+
+  for(unsigned y = 0; y < editorRows; y++) {
+    if(offset >= editorSize) break;
+    sprintf(temp, "%.4x:%.4x", (offset >> 16) & 0xffff, (offset >> 0) & 0xffff);
+    output << "<font color='#808080'>" << temp << "</font>&nbsp;&nbsp;";
+
+    for(unsigned x = 0; x < editorColumns; x++) {
+      if(offset >= editorSize) break;
+      sprintf(temp, "%.2x", reader ? reader(offset) : 0x00);
+      offset++;
+      output << "<font color='" << ((x & 1) ? "#000080" : "#0000ff") << "'>" << temp << "</font>";
+      if(x != (editorColumns - 1)) output << "&nbsp;";
+    }
+
+    if(y != (editorRows - 1)) output << "<br>";
+  }
+
+  setHtml(output);
+}
+
+inline void HexEditor::scrolled() {
+  if(lock) return;
+  unsigned offset = scrollBar->sliderPosition();
+  editorOffset = offset * editorColumns;
+  refresh();
+}
+
+inline HexEditor::HexEditor() {
+  setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+  setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+
+  layout = new QHBoxLayout;
+  layout->setAlignment(Qt::AlignRight);
+  layout->setMargin(0);
+  layout->setSpacing(0);
+  setLayout(layout);
+
+  scrollBar = new QScrollBar(Qt::Vertical);
+  scrollBar->setSingleStep(1);
+  layout->addWidget(scrollBar);
+
+  lock = false;
+  connect(scrollBar, SIGNAL(actionTriggered(int)), this, SLOT(scrolled()));
+
+  setColumns(16);
+  setRows(16);
+  setSize(0);
+  setOffset(0);
+}
+
+}
+
+#endif

snesfilter/nall/qt/radio-action.moc.hpp

@@ -0,0 +1,41 @@
+#ifndef NALL_QT_RADIOACTION_HPP
+#define NALL_QT_RADIOACTION_HPP
+
+namespace nall {
+
+class RadioAction : public QAction {
+  Q_OBJECT
+
+public:
+  bool isChecked() const;
+  void setChecked(bool);
+  void toggleChecked();
+  RadioAction(const QString&, QObject*);
+
+protected slots:
+
+protected:
+  bool checked;
+};
+
+inline bool RadioAction::isChecked() const {
+  return checked;
+}
+
+inline void RadioAction::setChecked(bool checked_) {
+  checked = checked_;
+  if(checked) setIcon(QIcon(":/16x16/item-radio-on.png"));
+  else setIcon(QIcon(":/16x16/item-radio-off.png"));
+}
+
+inline void RadioAction::toggleChecked() {
+  setChecked(!isChecked());
+}
+
+inline RadioAction::RadioAction(const QString &text, QObject *parent) : QAction(text, parent) {
+  setChecked(false);
+}
+
+}
+
+#endif

snesfilter/nall/qt/window.moc.hpp

@@ -0,0 +1,105 @@
+#ifndef NALL_QT_WINDOW_HPP
+#define NALL_QT_WINDOW_HPP
+
+#include <nall/base64.hpp>
+#include <nall/string.hpp>
+
+namespace nall {
+
+class Window : public QWidget {
+  Q_OBJECT
+
+public:
+  void setGeometryString(string *geometryString);
+  void setCloseOnEscape(bool);
+  void show();
+  void hide();
+  void shrink();
+
+  Window();
+
+protected slots:
+
+protected:
+  string *geometryString;
+  bool closeOnEscape;
+  void keyReleaseEvent(QKeyEvent *event);
+  void closeEvent(QCloseEvent *event);
+};
+
+inline void Window::setGeometryString(string *geometryString_) {
+  geometryString = geometryString_;
+  if(geometryString && isVisible() == false) {
+    uint8_t *data;
+    unsigned length;
+    base64::decode(data, length, *geometryString);
+    QByteArray array((const char*)data, length);
+    delete[] data;
+    restoreGeometry(array);
+  }
+}
+
+inline void Window::setCloseOnEscape(bool value) {
+  closeOnEscape = value;
+}
+
+inline void Window::show() {
+  if(geometryString && isVisible() == false) {
+    uint8_t *data;
+    unsigned length;
+    base64::decode(data, length, *geometryString);
+    QByteArray array((const char*)data, length);
+    delete[] data;
+    restoreGeometry(array);
+  }
+  QWidget::show();
+  QApplication::processEvents();
+  activateWindow();
+  raise();
+}
+
+inline void Window::hide() {
+  if(geometryString && isVisible() == true) {
+    char *data;
+    QByteArray geometry = saveGeometry();
+    base64::encode(data, (const uint8_t*)geometry.data(), geometry.length());
+    *geometryString = data;
+    delete[] data;
+  }
+  QWidget::hide();
+}
+
+inline void Window::shrink() {
+  if(isFullScreen()) return;
+
+  for(unsigned i = 0; i < 2; i++) {
+    resize(0, 0);
+    usleep(2000);
+    QApplication::processEvents();
+  }
+}
+
+inline void Window::keyReleaseEvent(QKeyEvent *event) {
+  if(closeOnEscape && (event->key() == Qt::Key_Escape)) close();
+  QWidget::keyReleaseEvent(event);
+}
+
+inline void Window::closeEvent(QCloseEvent *event) {
+  if(geometryString) {
+    char *data;
+    QByteArray geometry = saveGeometry();
+    base64::encode(data, (const uint8_t*)geometry.data(), geometry.length());
+    *geometryString = data;
+    delete[] data;
+  }
+  QWidget::closeEvent(event);
+}
+
+inline Window::Window() {
+  geometryString = 0;
+  closeOnEscape = true;
+}
+
+}
+
+#endif

snesfilter/nall/serial.hpp

@@ -0,0 +1,80 @@
+#ifndef NALL_SERIAL_HPP
+#define NALL_SERIAL_HPP
+
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include <nall/stdint.hpp>
+
+namespace nall {
+  class serial {
+  public:
+    //-1 on error, otherwise return bytes read
+    int read(uint8_t *data, unsigned length) {
+      if(port_open == false) return -1;
+      return ::read(port, (void*)data, length);
+    }
+
+    //-1 on error, otherwise return bytes written
+    int write(const uint8_t *data, unsigned length) {
+      if(port_open == false) return -1;
+      return ::write(port, (void*)data, length);
+    }
+
+    bool open(const char *portname, unsigned rate) {
+      close();
+
+      port = ::open(portname, O_RDWR | O_NOCTTY | O_NDELAY | O_NONBLOCK);
+      if(port == -1) return false;
+
+      if(ioctl(port, TIOCEXCL) == -1) { close(); return false; }
+      if(fcntl(port, F_SETFL, 0) == -1) { close(); return false; }
+      if(tcgetattr(port, &original_attr) == -1) { close(); return false; }
+
+      termios attr = original_attr;
+      cfmakeraw(&attr);
+      cfsetspeed(&attr, rate);
+
+      attr.c_lflag &=~ (ECHO | ECHONL | ISIG | ICANON | IEXTEN);
+      attr.c_iflag &=~ (BRKINT | PARMRK | INPCK | ISTRIP | INLCR | IGNCR | ICRNL | IXON | IXOFF | IXANY);
+      attr.c_iflag |=  (IGNBRK | IGNPAR);
+      attr.c_oflag &=~ (OPOST);
+      attr.c_cflag &=~ (CSIZE | CSTOPB | PARENB);
+      attr.c_cflag |=  (CS8 | CREAD | CLOCAL);
+      attr.c_cc[VTIME] = attr.c_cc[VMIN] = 0;
+
+      if(tcsetattr(port, TCSANOW, &attr) == -1) { close(); return false; }
+      return port_open = true;
+    }
+
+    void close() {
+      if(port != -1) {
+        tcdrain(port);
+        if(port_open == true) {
+          tcsetattr(port, TCSANOW, &original_attr);
+          port_open = false;
+        }
+        ::close(port);
+        port = -1;
+      }
+    }
+
+    serial() {
+      port = -1;
+      port_open = false;
+    }
+
+    ~serial() {
+      close();
+    }
+
+  private:
+    int port;
+    bool port_open;
+    termios original_attr;
+  };
+}
+
+#endif

snesfilter/nall/serializer.hpp

@@ -0,0 +1,145 @@
+#ifndef NALL_SERIALIZER_HPP
+#define NALL_SERIALIZER_HPP
+
+#include <type_traits>
+#include <utility>
+#include <nall/stdint.hpp>
+#include <nall/utility.hpp>
+
+namespace nall {
+  //serializer: a class designed to save and restore the state of classes.
+  //
+  //benefits:
+  //- data() will be portable in size (it is not necessary to specify type sizes.)
+  //- data() will be portable in endianness (always stored internally as little-endian.)
+  //- one serialize function can both save and restore class states.
+  //
+  //caveats:
+  //- only plain-old-data can be stored. complex classes must provide serialize(serializer&);
+  //- floating-point usage is not portable across platforms
+
+  class serializer {
+  public:
+    enum mode_t { Load, Save, Size };
+
+    mode_t mode() const {
+      return imode;
+    }
+
+    const uint8_t* data() const {
+      return idata;
+    }
+
+    unsigned size() const {
+      return isize;
+    }
+
+    unsigned capacity() const {
+      return icapacity;
+    }
+
+    template<typename T> void floatingpoint(T &value) {
+      enum { size = sizeof(T) };
+      //this is rather dangerous, and not cross-platform safe;
+      //but there is no standardized way to export FP-values
+      uint8_t *p = (uint8_t*)&value;
+      if(imode == Save) {
+        for(unsigned n = 0; n < size; n++) idata[isize++] = p[n];
+      } else if(imode == Load) {
+        for(unsigned n = 0; n < size; n++) p[n] = idata[isize++];
+      } else {
+        isize += size;
+      }
+    }
+
+    template<typename T> void integer(T &value) {
+      enum { size = std::is_same<bool, T>::value ? 1 : sizeof(T) };
+      if(imode == Save) {
+        for(unsigned n = 0; n < size; n++) idata[isize++] = value >> (n << 3);
+      } else if(imode == Load) {
+        value = 0;
+        for(unsigned n = 0; n < size; n++) value |= idata[isize++] << (n << 3);
+      } else if(imode == Size) {
+        isize += size;
+      }
+    }
+
+    template<typename T> void array(T &array) {
+      enum { size = sizeof(T) / sizeof(typename std::remove_extent<T>::type) };
+      for(unsigned n = 0; n < size; n++) integer(array[n]);
+    }
+
+    template<typename T> void array(T array, unsigned size) {
+      for(unsigned n = 0; n < size; n++) integer(array[n]);
+    }
+
+    //copy
+    serializer& operator=(const serializer &s) {
+      if(idata) delete[] idata;
+
+      imode = s.imode;
+      idata = new uint8_t[s.icapacity];
+      isize = s.isize;
+      icapacity = s.icapacity;
+
+      memcpy(idata, s.idata, s.icapacity);
+      return *this;
+    }
+
+    serializer(const serializer &s) : idata(0) {
+      operator=(s);
+    }
+
+    //move
+    serializer& operator=(serializer &&s) {
+      if(idata) delete[] idata;
+
+      imode = s.imode;
+      idata = s.idata;
+      isize = s.isize;
+      icapacity = s.icapacity;
+
+      s.idata = 0;
+      return *this;
+    }
+
+    serializer(serializer &&s) {
+      operator=(std::move(s));
+    }
+
+    //construction
+    serializer() {
+      imode = Size;
+      idata = 0;
+      isize = 0;
+    }
+
+    serializer(unsigned capacity) {
+      imode = Save;
+      idata = new uint8_t[capacity]();
+      isize = 0;
+      icapacity = capacity;
+    }
+
+    serializer(const uint8_t *data, unsigned capacity) {
+      imode = Load;
+      idata = new uint8_t[capacity];
+      isize = 0;
+      icapacity = capacity;
+      memcpy(idata, data, capacity);
+    }
+
+    ~serializer() {
+      if(idata) delete[] idata;
+    }
+
+  private:
+    mode_t imode;
+    uint8_t *idata;
+    unsigned isize;
+    unsigned icapacity;
+  };
+
+};
+
+#endif

snesfilter/nall/sha256.hpp

@@ -0,0 +1,143 @@
+#ifndef NALL_SHA256_HPP
+#define NALL_SHA256_HPP
+
+//author: vladitx
+
+namespace nall {
+  #define PTR(t, a) ((t*)(a))
+
+  #define SWAP32(x) ((uint32_t)(           \
+    (((uint32_t)(x) & 0x000000ff) << 24) | \
+    (((uint32_t)(x) & 0x0000ff00) <<  8) | \
+    (((uint32_t)(x) & 0x00ff0000) >>  8) | \
+    (((uint32_t)(x) & 0xff000000) >> 24)   \
+  ))
+
+  #define ST32(a, d) *PTR(uint32_t, a) = (d)
+  #define ST32BE(a, d) ST32(a, SWAP32(d))
+
+  #define LD32(a) *PTR(uint32_t, a)
+  #define LD32BE(a) SWAP32(LD32(a))
+
+  #define LSL32(x, n) ((uint32_t)(x) << (n))
+  #define LSR32(x, n) ((uint32_t)(x) >> (n))
+  #define ROR32(x, n) (LSR32(x, n) | LSL32(x, 32 - (n)))
+
+  //first 32 bits of the fractional parts of the square roots of the first 8 primes 2..19
+  static const uint32_t T_H[8] = {
+    0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19,
+  };
+
+  //first 32 bits of the fractional parts of the cube roots of the first 64 primes 2..311
+  static const uint32_t T_K[64] = {
+    0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2,
+  };
+
+  struct sha256_ctx {
+    uint8_t in[64];
+    unsigned inlen;
+
+    uint32_t w[64];
+    uint32_t h[8];
+    uint64_t len;
+  };
+
+  void sha256_init(sha256_ctx *p) {
+    memset(p, 0, sizeof(sha256_ctx));
+    memcpy(p->h, T_H, sizeof(T_H));
+  }
+
+  static void sha256_block(sha256_ctx *p) {
+    unsigned i;
+    uint32_t s0, s1;
+    uint32_t a, b, c, d, e, f, g, h;
+    uint32_t t1, t2, maj, ch;
+
+    for(i = 0; i < 16; i++) p->w[i] = LD32BE(p->in + i * 4);
+
+    for(i = 16; i < 64; i++) {
+      s0 = ROR32(p->w[i - 15],  7) ^ ROR32(p->w[i - 15], 18) ^ LSR32(p->w[i - 15],  3);
+      s1 = ROR32(p->w[i -  2], 17) ^ ROR32(p->w[i -  2], 19) ^ LSR32(p->w[i -  2], 10);
+      p->w[i] = p->w[i - 16] + s0 + p->w[i - 7] + s1;
+    }
+
+    a = p->h[0]; b = p->h[1]; c = p->h[2]; d = p->h[3];
+    e = p->h[4]; f = p->h[5]; g = p->h[6]; h = p->h[7];
+
+    for(i = 0; i < 64; i++) {
+      s0 = ROR32(a, 2) ^ ROR32(a, 13) ^ ROR32(a, 22);
+      maj = (a & b) ^ (a & c) ^ (b & c);
+      t2 = s0 + maj;
+      s1 = ROR32(e, 6) ^ ROR32(e, 11) ^ ROR32(e, 25);
+      ch = (e & f) ^ (~e & g);
+      t1 = h + s1 + ch + T_K[i] + p->w[i];
+
+      h = g; g = f; f = e; e = d + t1;
+      d = c; c = b; b = a; a = t1 + t2;
+    }
+
+    p->h[0] += a; p->h[1] += b; p->h[2] += c; p->h[3] += d;
+    p->h[4] += e; p->h[5] += f; p->h[6] += g; p->h[7] += h;
+
+    //next block
+    p->inlen = 0;
+  }
+
+  void sha256_chunk(sha256_ctx *p, const uint8_t *s, unsigned len) {
+    unsigned l;
+    p->len += len;
+
+    while(len) {
+      l = 64 - p->inlen;
+      l = (len < l) ? len : l;
+
+      memcpy(p->in + p->inlen, s, l);
+      s += l;
+      p->inlen += l;
+      len -= l;
+
+      if(p->inlen == 64) sha256_block(p);
+    }
+  }
+
+  void sha256_final(sha256_ctx *p) {
+    uint64_t len;
+    p->in[p->inlen++] = 0x80;
+
+    if(p->inlen > 56) {
+      memset(p->in + p->inlen, 0, 64 - p->inlen);
+      sha256_block(p);
+    }
+
+    memset(p->in + p->inlen, 0, 56 - p->inlen);
+
+    len = p->len << 3;
+    ST32BE(p->in + 56, len >> 32);
+    ST32BE(p->in + 60, len);
+    sha256_block(p);
+  }
+
+  void sha256_hash(sha256_ctx *p, uint8_t *s) {
+    uint32_t *t = (uint32_t*)s;
+    for(unsigned i = 0; i < 8; i++) ST32BE(t++, p->h[i]);
+  }
+
+  #undef PTR
+  #undef SWAP32
+  #undef ST32
+  #undef ST32BE
+  #undef LD32
+  #undef LD32BE
+  #undef LSL32
+  #undef LSR32
+  #undef ROR32
+}
+
+#endif

snesfilter/nall/sort.hpp

@@ -0,0 +1,62 @@
+#ifndef NALL_SORT_HPP
+#define NALL_SORT_HPP
+
+#include <nall/utility.hpp>
+
+//class:   merge sort
+//average: O(n log n)
+//worst:   O(n log n)
+//memory:  O(n)
+//stack:   O(log n)
+//stable?: yes
+
+//notes:
+//there are two primary reasons for choosing merge sort
+//over the (usually) faster quick sort*:
+//1: it is a stable sort.
+//2: it lacks O(n^2) worst-case overhead.
+//(* which is also O(n log n) in the average case.)
+
+namespace nall {
+  template<typename T>
+  void sort(T list[], unsigned length) {
+    if(length <= 1) return;  //nothing to sort
+
+    //use insertion sort to quickly sort smaller blocks
+    if(length < 64) {
+      for(unsigned i = 0; i < length; i++) {
+        unsigned min = i;
+        for(unsigned j = i + 1; j < length; j++) {
+          if(list[j] < list[min]) min = j;
+        }
+        if(min != i) swap(list[i], list[min]);
+      }
+      return;
+    }
+
+    //split list in half and recursively sort both
+    unsigned middle = length / 2;
+    sort(list, middle);
+    sort(list + middle, length - middle);
+
+    //left and right are sorted here; perform merge sort
+    T *buffer = new T[length];
+    unsigned offset = 0;
+    unsigned left   = 0;
+    unsigned right  = middle;
+    while(left < middle && right < length) {
+      if(list[left] < list[right]) {
+        buffer[offset++] = list[left++];
+      } else {
+        buffer[offset++] = list[right++];
+      }
+    }
+    while(left  < middle) buffer[offset++] = list[left++];
+    while(right < length) buffer[offset++] = list[right++];
+
+    for(unsigned i = 0; i < length; i++) list[i] = buffer[i];
+    delete[] buffer;
+  }
+}
+
+#endif

snesfilter/nall/static.hpp

@@ -0,0 +1,20 @@
+#ifndef NALL_STATIC_HPP
+#define NALL_STATIC_HPP
+
+namespace nall {
+  template<bool C, typename T, typename F> struct static_if { typedef T type; };
+  template<typename T, typename F> struct static_if<false, T, F> { typedef F type; };
+  template<typename C, typename T, typename F> struct mp_static_if { typedef typename static_if<C::type, T, F>::type type; };
+
+  template<bool A, bool B> struct static_and { enum { value = false }; };
+  template<> struct static_and<true, true> { enum { value = true }; };
+  template<typename A, typename B> struct mp_static_and { enum { value = static_and<A::value, B::value>::value }; };
+
+  template<bool A, bool B> struct static_or { enum { value = false }; };
+  template<> struct static_or<false, true> { enum { value = true }; };
+  template<> struct static_or<true, false> { enum { value = true }; };
+  template<> struct static_or<true, true> { enum { value = true }; };
+  template<typename A, typename B> struct mp_static_or { enum { value = static_or<A::value, B::value>::value }; };
+}
+
+#endif

snesfilter/nall/stdint.hpp

@@ -0,0 +1,44 @@
+#ifndef NALL_STDINT_HPP
+#define NALL_STDINT_HPP
+
+#include <nall/static.hpp>
+
+#if defined(_MSC_VER)
+  typedef signed char int8_t;
+  typedef signed short int16_t;
+  typedef signed int int32_t;
+  typedef signed long long int64_t;
+  typedef int64_t intmax_t;
+  #if defined(_WIN64)
+  typedef int64_t intptr_t;
+  #else
+  typedef int32_t intptr_t;
+  #endif
+
+  typedef unsigned char uint8_t;
+  typedef unsigned short uint16_t;
+  typedef unsigned int uint32_t;
+  typedef unsigned long long uint64_t;
+  typedef uint64_t uintmax_t;
+  #if defined(_WIN64)
+  typedef uint64_t uintptr_t;
+  #else
+  typedef uint32_t uintptr_t;
+  #endif
+#else
+  #include <stdint.h>
+#endif
+
+namespace nall {
+  static_assert(sizeof(int8_t)   == 1, "int8_t is not of the correct size" );
+  static_assert(sizeof(int16_t)  == 2, "int16_t is not of the correct size");
+  static_assert(sizeof(int32_t)  == 4, "int32_t is not of the correct size");
+  static_assert(sizeof(int64_t)  == 8, "int64_t is not of the correct size");
+
+  static_assert(sizeof(uint8_t)  == 1, "int8_t is not of the correct size" );
+  static_assert(sizeof(uint16_t) == 2, "int16_t is not of the correct size");
+  static_assert(sizeof(uint32_t) == 4, "int32_t is not of the correct size");
+  static_assert(sizeof(uint64_t) == 8, "int64_t is not of the correct size");
+}
+
+#endif

snesfilter/nall/string.hpp

@@ -0,0 +1,26 @@
+#ifndef NALL_STRING_HPP
+#define NALL_STRING_HPP
+
+#include <initializer_list>
+#include <nall/string/base.hpp>
+#include <nall/string/core.hpp>
+#include <nall/string/cast.hpp>
+#include <nall/string/compare.hpp>
+#include <nall/string/convert.hpp>
+#include <nall/string/filename.hpp>
+#include <nall/string/match.hpp>
+#include <nall/string/math.hpp>
+#include <nall/string/strl.hpp>
+#include <nall/string/trim.hpp>
+#include <nall/string/replace.hpp>
+#include <nall/string/split.hpp>
+#include <nall/string/utility.hpp>
+#include <nall/string/variadic.hpp>
+#include <nall/string/xml.hpp>
+
+namespace nall {
+  template<> struct has_length<string> { enum { value = true }; };
+  template<> struct has_size<lstring> { enum { value = true }; };
+}
+
+#endif

snesfilter/nall/string/base.hpp

@@ -0,0 +1,137 @@
+#ifndef NALL_STRING_BASE_HPP
+#define NALL_STRING_BASE_HPP
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <nall/concept.hpp>
+#include <nall/stdint.hpp>
+#include <nall/utf8.hpp>
+#include <nall/vector.hpp>
+
+namespace nall {
+  class string;
+  template<typename T> inline string to_string(T);
+
+  class string {
+  public:
+    inline void reserve(unsigned);
+    inline unsigned length() const;
+
+    inline string& assign(const char*);
+    inline string& append(const char*);
+    template<typename T> inline string& operator= (T value);
+    template<typename T> inline string& operator<<(T value);
+
+    inline operator const char*() const;
+    inline char* operator()();
+    inline char& operator[](int);
+
+    inline bool operator==(const char*) const;
+    inline bool operator!=(const char*) const;
+    inline bool operator< (const char*) const;
+    inline bool operator<=(const char*) const;
+    inline bool operator> (const char*) const;
+    inline bool operator>=(const char*) const;
+
+    inline string();
+    inline string(const char*);
+    inline string(const string&);
+    inline string(string&&);
+    inline string& operator=(const string&);
+    inline string& operator=(string&&);
+    inline ~string();
+
+    inline bool readfile(const char*);
+    inline string& replace (const char*, const char*);
+    inline string& qreplace(const char*, const char*);
+
+  protected:
+    char *data;
+    unsigned size;
+
+  #if defined(QT_CORE_LIB)
+  public:
+    inline operator QString() const;
+  #endif
+  };
+
+  class lstring : public linear_vector<string> {
+  public:
+    template<typename T> inline lstring& operator<<(T value);
+
+    inline int find(const char*);
+    inline void split (const char*, const char*, unsigned = 0);
+    inline void qsplit(const char*, const char*, unsigned = 0);
+
+    lstring();
+    lstring(std::initializer_list<string>);
+  };
+
+  //compare.hpp
+  inline char chrlower(char c);
+  inline char chrupper(char c);
+  inline int stricmp(const char *dest, const char *src);
+  inline int strpos (const char *str, const char *key);
+  inline int qstrpos(const char *str, const char *key);
+  inline bool strbegin (const char *str, const char *key);
+  inline bool stribegin(const char *str, const char *key);
+  inline bool strend (const char *str, const char *key);
+  inline bool striend(const char *str, const char *key);
+
+  //convert.hpp
+  inline char* strlower(char *str);
+  inline char* strupper(char *str);
+  inline char* strtr(char *dest, const char *before, const char *after);
+  inline uintmax_t strhex     (const char *str);
+  inline intmax_t  strsigned  (const char *str);
+  inline uintmax_t strunsigned(const char *str);
+  inline uintmax_t strbin     (const char *str);
+  inline double    strdouble  (const char *str);
+
+  //match.hpp
+  inline bool match(const char *pattern, const char *str);
+
+  //math.hpp
+  inline bool strint (const char *str, int &result);
+  inline bool strmath(const char *str, int &result);
+
+  //strl.hpp
+  inline unsigned strlcpy(char *dest, const char *src, unsigned length);
+  inline unsigned strlcat(char *dest, const char *src, unsigned length);
+
+  //trim.hpp
+  inline char* ltrim(char *str, const char *key = " ");
+  inline char* rtrim(char *str, const char *key = " ");
+  inline char* trim (char *str, const char *key = " ");
+  inline char* ltrim_once(char *str, const char *key = " ");
+  inline char* rtrim_once(char *str, const char *key = " ");
+  inline char* trim_once (char *str, const char *key = " ");
+
+  //utility.hpp
+  inline unsigned strlcpy(string &dest, const char *src, unsigned length);
+  inline unsigned strlcat(string &dest, const char *src, unsigned length);
+  inline string substr(const char *src, unsigned start = 0, unsigned length = 0);
+  inline string& strlower(string &str);
+  inline string& strupper(string &str);
+  inline string& strtr(string &dest, const char *before, const char *after);
+  inline string& ltrim(string &str, const char *key = " ");
+  inline string& rtrim(string &str, const char *key = " ");
+  inline string& trim (string &str, const char *key = " ");
+  inline string& ltrim_once(string &str, const char *key = " ");
+  inline string& rtrim_once(string &str, const char *key = " ");
+  inline string& trim_once (string &str, const char *key = " ");
+  template<unsigned length = 0, char padding = '0'> inline string strhex(uintmax_t value);
+  template<unsigned length = 0, char padding = '0'> inline string strsigned(intmax_t value);
+  template<unsigned length = 0, char padding = '0'> inline string strunsigned(uintmax_t value);
+  template<unsigned length = 0, char padding = '0'> inline string strbin(uintmax_t value);
+  inline unsigned strdouble(char *str, double value);
+  inline string strdouble(double value);
+
+  //variadic.hpp
+  template<typename... Args> inline string sprint(Args... args);
+  template<typename... Args> inline void print(Args... args);
+};
+
+#endif

snesfilter/nall/string/cast.hpp

@@ -0,0 +1,32 @@
+#ifndef NALL_STRING_CAST_HPP
+#define NALL_STRING_CAST_HPP
+
+namespace nall {
+
+//this is needed, as C++0x does not support explicit template specialization inside classes
+template<> inline string to_string<bool>         (bool v)          { return v ? "true" : "false"; }
+template<> inline string to_string<signed int>   (signed int v)    { return strsigned(v); }
+template<> inline string to_string<unsigned int> (unsigned int v)  { return strunsigned(v); }
+template<> inline string to_string<double>       (double v)        { return strdouble(v); }
+template<> inline string to_string<char*>        (char *v)         { return v; }
+template<> inline string to_string<const char*>  (const char *v)   { return v; }
+template<> inline string to_string<string>       (string v)        { return v; }
+template<> inline string to_string<const string&>(const string &v) { return v; }
+
+template<typename T> string& string::operator= (T value) { return assign(to_string<T>(value)); }
+template<typename T> string& string::operator<<(T value) { return append(to_string<T>(value)); }
+
+template<typename T> lstring& lstring::operator<<(T value) {
+  operator[](size()).assign(to_string<T>(value));
+  return *this;
+}
+
+#if defined(QT_CORE_LIB)
+template<> inline string to_string<QString>(QString v) { return v.toUtf8().constData(); }
+template<> inline string to_string<const QString&>(const QString &v) { return v.toUtf8().constData(); }
+string::operator QString() const { return QString::fromUtf8(*this); }
+#endif
+
+}
+
+#endif

snesfilter/nall/string/compare.hpp

@@ -0,0 +1,104 @@
+#ifndef NALL_STRING_COMPARE_HPP
+#define NALL_STRING_COMPARE_HPP
+
+namespace nall {
+
+char chrlower(char c) {
+  return (c >= 'A' && c <= 'Z') ? c + ('a' - 'A') : c;
+}
+
+char chrupper(char c) {
+  return (c >= 'a' && c <= 'z') ? c - ('a' - 'A') : c;
+}
+
+int stricmp(const char *dest, const char *src) {
+  while(*dest) {
+    if(chrlower(*dest) != chrlower(*src)) break;
+    dest++;
+    src++;
+  }
+
+  return (int)chrlower(*dest) - (int)chrlower(*src);
+}
+
+int strpos(const char *str, const char *key) {
+  int ssl = strlen(str), ksl = strlen(key);
+
+  if(ksl > ssl) return -1;
+  for(int i = 0; i <= ssl - ksl; i++) {
+    if(!memcmp(str + i, key, ksl)) {
+      return i;
+    }
+  }
+  return -1;
+}
+
+int qstrpos(const char *str, const char *key) {
+  int ssl = strlen(str), ksl = strlen(key);
+
+  if(ksl > ssl) return -1;
+  for(int i = 0; i <= ssl - ksl;) {
+  uint8_t x = str[i];
+    if(x == '\"' || x == '\'') {
+    uint8_t z = i++;
+      while(str[i] != x && i < ssl) i++;
+      if(i >= ssl) i = z;
+    }
+    if(!memcmp(str + i, key, ksl)) {
+      return i;
+    } else {
+      i++;
+    }
+  }
+  return -1;
+}
+
+bool strbegin(const char *str, const char *key) {
+  int i, ssl = strlen(str), ksl = strlen(key);
+
+  if(ksl > ssl) return false;
+  return (!memcmp(str, key, ksl));
+}
+
+bool stribegin(const char *str, const char *key) {
+  int ssl = strlen(str), ksl = strlen(key);
+
+  if(ksl > ssl) return false;
+  for(int i = 0; i < ksl; i++) {
+    if(str[i] >= 'A' && str[i] <= 'Z') {
+      if(str[i] != key[i] && str[i]+0x20 != key[i])return false;
+    } else if(str[i] >= 'a' && str[i] <= 'z') {
+      if(str[i] != key[i] && str[i]-0x20 != key[i])return false;
+    } else {
+      if(str[i] != key[i])return false;
+    }
+  }
+  return true;
+}
+
+bool strend(const char *str, const char *key) {
+  int ssl = strlen(str), ksl = strlen(key);
+
+  if(ksl > ssl) return false;
+  return (!memcmp(str + ssl - ksl, key, ksl));
+}
+
+bool striend(const char *str, const char *key) {
+  int ssl = strlen(str), ksl = strlen(key);
+
+  if(ksl > ssl) return false;
+  for(int i = ssl - ksl, z = 0; i < ssl; i++, z++) {
+    if(str[i] >= 'A' && str[i] <= 'Z') {
+      if(str[i] != key[z] && str[i]+0x20 != key[z])return false;
+    } else if(str[i] >= 'a' && str[i] <= 'z') {
+      if(str[i] != key[z] && str[i]-0x20 != key[z])return false;
+    } else {
+      if(str[i] != key[z])return false;
+    }
+  }
+  return true;
+}
+
+}
+
+#endif

snesfilter/nall/string/convert.hpp

@@ -0,0 +1,153 @@
+#ifndef NALL_STRING_CONVERT_HPP
+#define NALL_STRING_CONVERT_HPP
+
+namespace nall {
+
+char* strlower(char *str) {
+  if(!str) return 0;
+  int i = 0;
+  while(str[i]) {
+    str[i] = chrlower(str[i]);
+    i++;
+  }
+  return str;
+}
+
+char* strupper(char *str) {
+  if(!str) return 0;
+  int i = 0;
+  while(str[i]) {
+    str[i] = chrupper(str[i]);
+    i++;
+  }
+  return str;
+}
+
+char* strtr(char *dest, const char *before, const char *after) {
+  if(!dest || !before || !after) return dest;
+  int sl = strlen(dest), bsl = strlen(before), asl = strlen(after);
+
+  if(bsl != asl || bsl == 0) return dest;  //patterns must be the same length for 1:1 replace
+  for(unsigned i = 0; i < sl; i++) {
+    for(unsigned l = 0; l < bsl; l++) {
+      if(dest[i] == before[l]) {
+        dest[i] = after[l];
+        break;
+      }
+    }
+  }
+
+  return dest;
+}
+
+uintmax_t strhex(const char *str) {
+  if(!str) return 0;
+  uintmax_t result = 0;
+
+  //skip hex identifiers 0x and $, if present
+  if(*str == '0' && (*(str + 1) == 'X' || *(str + 1) == 'x')) str += 2;
+  else if(*str == '$') str++;
+
+  while(*str) {
+    uint8_t x = *str++;
+    if(x >= '0' && x <= '9') x -= '0';
+    else if(x >= 'A' && x <= 'F') x -= 'A' - 10;
+    else if(x >= 'a' && x <= 'f') x -= 'a' - 10;
+    else break;  //stop at first invalid character
+    result = result * 16 + x;
+  }
+
+  return result;
+}
+
+intmax_t strsigned(const char *str) {
+  if(!str) return 0;
+  intmax_t result = 0;
+  bool negate = false;
+
+  //check for negation
+  if(*str == '-') {
+    negate = true;
+    str++;
+  }
+
+  while(*str) {
+    uint8_t x = *str++;
+    if(x >= '0' && x <= '9') x -= '0';
+    else break;  //stop at first invalid character
+    result = result * 10 + x;
+  }
+
+  return !negate ? result : -result;
+}
+
+uintmax_t strunsigned(const char *str) {
+  if(!str) return 0;
+  uintmax_t result = 0;
+
+  while(*str) {
+    uint8_t x = *str++;
+    if(x >= '0' && x <= '9') x -= '0';
+    else break;  //stop at first invalid character
+    result = result * 10 + x;
+  }
+
+  return result;
+}
+
+uintmax_t strbin(const char *str) {
+  if(!str) return 0;
+  uintmax_t result = 0;
+
+  //skip bin identifiers 0b and %, if present
+  if(*str == '0' && (*(str + 1) == 'B' || *(str + 1) == 'b')) str += 2;
+  else if(*str == '%') str++;
+
+  while(*str) {
+    uint8_t x = *str++;
+    if(x == '0' || x == '1') x -= '0';
+    else break;  //stop at first invalid character
+    result = result * 2 + x;
+  }
+
+  return result;
+}
+
+double strdouble(const char *str) {
+  if(!str) return 0.0;
+  bool negate = false;
+
+  //check for negation
+  if(*str == '-') {
+    negate = true;
+    str++;
+  }
+
+  intmax_t result_integral = 0;
+  while(*str) {
+    uint8_t x = *str++;
+    if(x >= '0' && x <= '9') x -= '0';
+    else if(x == '.') break;  //break loop and read fractional part
+    else return (double)result_integral;  //invalid value, assume no fractional part
+    result_integral = result_integral * 10 + x;
+  }
+
+  intmax_t result_fractional = 0;
+  while(*str) {
+    uint8_t x = *str++;
+    if(x >= '0' && x <= '9') x -= '0';
+    else break;  //stop at first invalid character
+    result_fractional = result_fractional * 10 + x;
+  }
+
+  //calculate fractional portion
+  double result = (double)result_fractional;
+  while((uintmax_t)result > 0) result /= 10.0;
+  result += (double)result_integral;
+
+  return !negate ? result : -result;
+}
+
+}
+
+#endif

snesfilter/nall/string/core.hpp

@@ -0,0 +1,133 @@
+#ifndef NALL_STRING_CORE_HPP
+#define NALL_STRING_CORE_HPP
+
+namespace nall {
+
+void string::reserve(unsigned size_) {
+  if(size_ > size) {
+    size = size_;
+    data = (char*)realloc(data, size + 1);
+    data[size] = 0;
+  }
+}
+
+unsigned string::length() const {
+  return strlen(data);
+}
+
+string& string::assign(const char *s) {
+  unsigned length = strlen(s);
+  reserve(length);
+  strcpy(data, s);
+  return *this;
+}
+
+string& string::append(const char *s) {
+  unsigned length = strlen(data) + strlen(s);
+  reserve(length);
+  strcat(data, s);
+  return *this;
+}
+
+string::operator const char*() const {
+  return data;
+}
+
+char* string::operator()() {
+  return data;
+}
+
+char& string::operator[](int index) {
+  reserve(index);
+  return data[index];
+}
+
+bool string::operator==(const char *str) const { return strcmp(data, str) == 0; }
+bool string::operator!=(const char *str) const { return strcmp(data, str) != 0; }
+bool string::operator< (const char *str) const { return strcmp(data, str)  < 0; }
+bool string::operator<=(const char *str) const { return strcmp(data, str) <= 0; }
+bool string::operator> (const char *str) const { return strcmp(data, str)  > 0; }
+bool string::operator>=(const char *str) const { return strcmp(data, str) >= 0; }
+
+string::string() {
+  size = 64;
+  data = (char*)malloc(size + 1);
+  *data = 0;
+}
+
+string::string(const char *value) {
+  size = strlen(value);
+  data = strdup(value);
+}
+
+string::string(const string &value) {
+  size = strlen(value);
+  data = strdup(value);
+}
+
+string::string(string &&source) {
+  size = source.size;
+  data = source.data;
+  source.data = 0;
+}
+
+string& string::operator=(const string &value) {
+  assign(value);
+  return *this;
+}
+
+string& string::operator=(string &&source) {
+  if(data) free(data);
+  size = source.size;
+  data = source.data;
+  source.data = 0;
+  source.size = 0;
+  return *this;
+}
+
+string::~string() {
+  free(data);
+}
+
+bool string::readfile(const char *filename) {
+  assign("");
+
+  #if !defined(_WIN32)
+  FILE *fp = fopen(filename, "rb");
+  #else
+  FILE *fp = _wfopen(utf16_t(filename), L"rb");
+  #endif
+  if(!fp) return false;
+
+  fseek(fp, 0, SEEK_END);
+  unsigned size = ftell(fp);
+  rewind(fp);
+  char *fdata = new char[size + 1];
+  unsigned unused = fread(fdata, 1, size, fp);
+  fclose(fp);
+  fdata[size] = 0;
+  assign(fdata);
+  delete[] fdata;
+
+  return true;
+}
+
+int lstring::find(const char *key) {
+  for(unsigned i = 0; i < size(); i++) {
+    if(operator[](i) == key) return i;
+  }
+  return -1;
+}
+
+inline lstring::lstring() {
+}
+
+inline lstring::lstring(std::initializer_list<string> list) {
+  for(const string *s = list.begin(); s != list.end(); ++s) {
+    operator<<(*s);
+  }
+}
+
+}
+
+#endif

snesfilter/nall/string/filename.hpp

@@ -0,0 +1,61 @@
+#ifndef NALL_FILENAME_HPP
+#define NALL_FILENAME_HPP
+
+namespace nall {
+
+// "foo/bar.c" -> "foo/", "bar.c" -> "./"
+inline string dir(char const *name) {
+  string result = name;
+  for(signed i = strlen(result); i >= 0; i--) {
+    if(result[i] == '/' || result[i] == '\\') {
+      result[i + 1] = 0;
+      break;
+    }
+    if(i == 0) result = "./";
+  }
+  return result;
+}
+
+// "foo/bar.c" -> "bar.c"
+inline string notdir(char const *name) {
+  for(signed i = strlen(name); i >= 0; i--) {
+    if(name[i] == '/' || name[i] == '\\') {
+      name += i + 1;
+      break;
+    }
+  }
+  string result = name;
+  return result;
+}
+
+// "foo/bar.c" -> "foo/bar"
+inline string basename(char const *name) {
+  string result = name;
+  for(signed i = strlen(result); i >= 0; i--) {
+    if(result[i] == '/' || result[i] == '\\') {
+      //file has no extension
+      break;
+    }
+    if(result[i] == '.') {
+      result[i] = 0;
+      break;
+    }
+  }
+  return result;
+}
+
+// "foo/bar.c" -> "c"
+inline string extension(char const *name) {
+  for(signed i = strlen(name); i >= 0; i--) {
+    if(name[i] == '.') {
+      name += i + 1;
+      break;
+    }
+  }
+  string result = name;
+  return result;
+}
+
+}
+
+#endif

snesfilter/nall/string/match.hpp

@@ -0,0 +1,76 @@
+#ifndef NALL_STRING_MATCH_HPP
+#define NALL_STRING_MATCH_HPP
+
+namespace nall {
+
+bool match(const char *p, const char *s) {
+  const char *p_ = 0, *s_ = 0;
+
+  for(;;) {
+    if(!*s) {
+      while(*p == '*') p++;
+      return !*p;
+    }
+
+    //wildcard match
+    if(*p == '*') {
+      p_ = p++, s_ = s;
+      continue;
+    }
+
+    //any match
+    if(*p == '?') {
+      p++, s++;
+      continue;
+    }
+
+    //ranged match
+    if(*p == '{') {
+      #define pattern(name_, rule_) \
+        if(strbegin(p, name_)) { \
+          if(rule_) { \
+            p += sizeof(name_) - 1, s++; \
+            continue; \
+          } \
+          goto failure; \
+        }
+
+      pattern("{alpha}",        (*s >= 'A' && *s <= 'Z') || (*s >= 'a' && *s <= 'z'))
+      pattern("{alphanumeric}", (*s >= 'A' && *s <= 'Z') || (*s >= 'a' && *s <= 'z') || (*s >= '0' && *s <= '9'))
+      pattern("{binary}",       (*s == '0' || *s == '1'))
+      pattern("{hex}",          (*s >= '0' && *s <= '9') || (*s >= 'A' && *s <= 'F') || (*s >= 'a' && *s <= 'f'))
+      pattern("{lowercase}",    (*s >= 'a' && *s <= 'z'))
+      pattern("{numeric}",      (*s >= '0' && *s <= '9'))
+      pattern("{uppercase}",    (*s >= 'A' && *s <= 'Z'))
+      pattern("{whitespace}",   (*s == ' ' || *s == '\t'))
+
+      #undef pattern
+      goto failure;
+    }
+
+    //reserved character match
+    if(*p == '\\') {
+      p++;
+    //fallthrough
+    }
+
+    //literal match
+    if(*p == *s) {
+      p++, *s++;
+      continue;
+    }
+
+    //attempt wildcard rematch
+    failure:
+    if(p_) {
+      p = p_, s = s_ + 1;
+      continue;
+    }
+
+    return false;
+  }
+}
+
+}
+
+#endif

snesfilter/nall/string/math.hpp

@@ -0,0 +1,164 @@
+#ifndef NALL_STRING_MATH_HPP
+#define NALL_STRING_MATH_HPP
+
+namespace nall {
+
+static int eval_integer(const char *&s) {
+  if(!*s) throw "unrecognized_integer";
+  int value = 0, x = *s, y = *(s + 1);
+
+  //hexadecimal
+  if(x == '0' && (y == 'X' || y == 'x')) {
+    s += 2;
+    while(true) {
+      if(*s >= '0' && *s <= '9') { value = value * 16 + (*s++ - '0');      continue; }
+      if(*s >= 'A' && *s <= 'F') { value = value * 16 + (*s++ - 'A' + 10); continue; }
+      if(*s >= 'a' && *s <= 'f') { value = value * 16 + (*s++ - 'a' + 10); continue; }
+      return value;
+    }
+  }
+
+  //binary
+  if(x == '0' && (y == 'B' || y == 'b')) {
+    s += 2;
+    while(true) {
+      if(*s == '0' || *s == '1') { value = value * 2 + (*s++ - '0'); continue; }
+      return value;
+    }
+  }
+
+  //octal (or decimal '0')
+  if(x == '0') {
+    s += 1;
+    while(true) {
+      if(*s >= '0' && *s <= '7') { value = value * 8 + (*s++ - '0'); continue; }
+      return value;
+    }
+  }
+
+  //decimal
+  if(x >= '0' && x <= '9') {
+    while(true) {
+      if(*s >= '0' && *s <= '9') { value = value * 10 + (*s++ - '0'); continue; }
+      return value;
+    }
+  }
+
+  //char
+  if(x == '\'' && y != '\'') {
+    s += 1;
+    while(true) {
+      value = value * 256 + *s++;
+      if(*s == '\'') { s += 1; return value; }
+      if(!*s) throw "mismatched_char";
+    }
+  }
+
+  throw "unrecognized_integer";
+}
+
+static int eval(const char *&s, int depth = 0) {
+  while(*s == ' ' || *s == '\t') s++; //trim whitespace
+  if(!*s) throw "unrecognized_token";
+  int value = 0, x = *s, y = *(s + 1);
+
+  if(*s == '(') {
+    value = eval(++s, 1);
+    if(*s++ != ')') throw "mismatched_group";
+  }
+
+  else if(x == '!') value = !eval(++s, 13);
+  else if(x == '~') value = ~eval(++s, 13);
+  else if(x == '+') value = +eval(++s, 13);
+  else if(x == '-') value = -eval(++s, 13);
+
+  else if((x >= '0' && x <= '9') || x == '\'') value = eval_integer(s);
+
+  else throw "unrecognized_token";
+
+  while(true) {
+    while(*s == ' ' || *s == '\t') s++; //trim whitespace
+    if(!*s) break;
+    x = *s, y = *(s + 1);
+
+    if(depth >= 13) break;
+    if(x == '*') { value *= eval(++s, 13); continue; }
+    if(x == '/') { value /= eval(++s, 13); continue; }
+    if(x == '%') { value %= eval(++s, 13); continue; }
+
+    if(depth >= 12) break;
+    if(x == '+') { value += eval(++s, 12); continue; }
+    if(x == '-') { value -= eval(++s, 12); continue; }
+
+    if(depth >= 11) break;
+    if(x == '<' && y == '<') { value <<= eval(++++s, 11); continue; }
+    if(x == '>' && y == '>') { value >>= eval(++++s, 11); continue; }
+
+    if(depth >= 10) break;
+    if(x == '<' && y == '=') { value = value <= eval(++++s, 10); continue; }
+    if(x == '>' && y == '=') { value = value >= eval(++++s, 10); continue; }
+    if(x == '<') { value = value < eval(++s, 10); continue; }
+    if(x == '>') { value = value > eval(++s, 10); continue; }
+
+    if(depth >= 9) break;
+    if(x == '=' && y == '=') { value = value == eval(++++s, 9); continue; }
+    if(x == '!' && y == '=') { value = value != eval(++++s, 9); continue; }
+
+    if(depth >= 8) break;
+    if(x == '&' && y != '&') { value = value & eval(++s, 8); continue; }
+
+    if(depth >= 7) break;
+    if(x == '^' && y != '^') { value = value ^ eval(++s, 7); continue; }
+
+    if(depth >= 6) break;
+    if(x == '|' && y != '|') { value = value | eval(++s, 6); continue; }
+
+    if(depth >= 5) break;
+    if(x == '&' && y == '&') { value = eval(++++s, 5) && value; continue; }
+
+    if(depth >= 4) break;
+    if(x == '^' && y == '^') { value = (!eval(++++s, 4) != !value); continue; }
+
+    if(depth >= 3) break;
+    if(x == '|' && y == '|') { value = eval(++++s, 3) || value; continue; }
+
+    if(x == '?') {
+      int lhs = eval(++s, 2);
+      if(*s != ':') throw "mismatched_ternary";
+      int rhs = eval(++s, 2);
+      value = value ? lhs : rhs;
+      continue;
+    }
+    if(depth >= 2) break;
+
+    if(depth > 0 && x == ')') break;
+
+    throw "unrecognized_token";
+  }
+
+  return value;
+}
+
+bool strint(const char *s, int &result) {
+  try {
+    result = eval_integer(s);
+    return true;
+  } catch(const char*) {
+    result = 0;
+    return false;
+  }
+}
+
+bool strmath(const char *s, int &result) {
+  try {
+    result = eval(s);
+    return true;
+  } catch(const char*) {
+    result = 0;
+    return false;
+  }
+}
+
+}
+
+#endif

snesfilter/nall/string/replace.hpp

@@ -0,0 +1,103 @@
+#ifndef NALL_STRING_REPLACE_HPP
+#define NALL_STRING_REPLACE_HPP
+
+namespace nall {
+
+string& string::replace(const char *key, const char *token) {
+  int i, z, ksl = strlen(key), tsl = strlen(token), ssl = length();
+  unsigned int replace_count = 0, size = ssl;
+  char *buffer;
+
+  if(ksl <= ssl) {
+    if(tsl > ksl) {                      //the new string may be longer than the old string...
+      for(i = 0; i <= ssl - ksl;) {      //so let's find out how big of a string we'll need...
+        if(!memcmp(data + i, key, ksl)) {
+          replace_count++;
+          i += ksl;
+        } else i++;
+      }
+      size = ssl + ((tsl - ksl) * replace_count);
+      reserve(size);
+    }
+
+    buffer = new char[size + 1];
+    for(i = z = 0; i < ssl;) {
+      if(i <= ssl - ksl) {
+        if(!memcmp(data + i, key, ksl)) {
+          memcpy(buffer + z, token, tsl);
+          z += tsl;
+          i += ksl;
+        } else buffer[z++] = data[i++];
+      } else buffer[z++] = data[i++];
+    }
+    buffer[z] = 0;
+
+    assign(buffer);
+    delete[] buffer;
+  }
+
+  return *this;
+}
+
+string& string::qreplace(const char *key, const char *token) {
+  int i, l, z, ksl = strlen(key), tsl = strlen(token), ssl = length();
+  unsigned int replace_count = 0, size = ssl;
+  uint8_t x;
+  char *buffer;
+
+  if(ksl <= ssl) {
+    if(tsl > ksl) {
+      for(i = 0; i <= ssl - ksl;) {
+        x = data[i];
+        if(x == '\"' || x == '\'') {
+          l = i;
+          i++;
+          while(data[i++] != x) {
+            if(i == ssl) {
+              i = l;
+              break;
+            }
+          }
+        }
+        if(!memcmp(data + i, key, ksl)) {
+          replace_count++;
+          i += ksl;
+        } else i++;
+      }
+      size = ssl + ((tsl - ksl) * replace_count);
+      reserve(size);
+    }
+
+    buffer = new char[size + 1];
+    for(i = z = 0; i < ssl;) {
+      x = data[i];
+      if(x == '\"' || x == '\'') {
+        l = i++;
+        while(data[i] != x && i < ssl)i++;
+        if(i >= ssl)i = l;
+        else {
+          memcpy(buffer + z, data + l, i - l);
+          z += i - l;
+        }
+      }
+      if(i <= ssl - ksl) {
+        if(!memcmp(data + i, key, ksl)) {
+          memcpy(buffer + z, token, tsl);
+          z += tsl;
+          i += ksl;
+          replace_count++;
+        } else buffer[z++] = data[i++];
+      } else buffer[z++] = data[i++];
+    }
+    buffer[z] = 0;
+
+    assign(buffer);
+    delete[] buffer;
+  }
+
+  return *this;
+}
+
+};
+
+#endif

snesfilter/nall/string/split.hpp

@@ -0,0 +1,56 @@
+#ifndef NALL_STRING_SPLIT_HPP
+#define NALL_STRING_SPLIT_HPP
+
+namespace nall {
+
+void lstring::split(const char *key, const char *src, unsigned limit) {
+  reset();
+
+  int ssl = strlen(src), ksl = strlen(key);
+  int lp = 0, split_count = 0;
+
+  for(int i = 0; i <= ssl - ksl;) {
+    if(!memcmp(src + i, key, ksl)) {
+      strlcpy(operator[](split_count++), src + lp, i - lp + 1);
+      i += ksl;
+      lp = i;
+      if(!--limit) break;
+    } else i++;
+  }
+
+  operator[](split_count++) = src + lp;
+}
+
+void lstring::qsplit(const char *key, const char *src, unsigned limit) {
+  reset();
+
+  int ssl = strlen(src), ksl = strlen(key);
+  int lp = 0, split_count = 0;
+
+  for(int i = 0; i <= ssl - ksl;) {
+    uint8_t x = src[i];
+
+    if(x == '\"' || x == '\'') {
+      int z = i++;                        //skip opening quote
+      while(i < ssl && src[i] != x) i++;
+      if(i >= ssl) i = z;                 //failed match, rewind i
+      else {
+        i++;                              //skip closing quote
+        continue;                         //restart in case next char is also a quote
+      }
+    }
+
+    if(!memcmp(src + i, key, ksl)) {
+      strlcpy(operator[](split_count++), src + lp, i - lp + 1);
+      i += ksl;
+      lp = i;
+      if(!--limit) break;
+    } else i++;
+  }
+
+  operator[](split_count++) = src + lp;
+}
+
+};
+
+#endif

snesfilter/nall/string/strl.hpp

@@ -0,0 +1,52 @@
+#ifndef NALL_STRING_STRL_HPP
+#define NALL_STRING_STRL_HPP
+
+namespace nall {
+
+//strlcpy, strlcat based on OpenBSD implementation by Todd C. Miller
+
+//return = strlen(src)
+unsigned strlcpy(char *dest, const char *src, unsigned length) {
+  char *d = dest;
+  const char *s = src;
+  unsigned n = length;
+
+  if(n) {
+    while(--n && (*d++ = *s++)); //copy as many bytes as possible, or until null terminator reached
+  }
+
+  if(!n) {
+    if(length) *d = 0;
+    while(*s++); //traverse rest of s, so that s - src == strlen(src)
+  }
+
+  return (s - src - 1); //return length of copied string, sans null terminator
+}
+
+//return = strlen(src) + min(length, strlen(dest))
+unsigned strlcat(char *dest, const char *src, unsigned length) {
+  char *d = dest;
+  const char *s = src;
+  unsigned n = length;
+
+  while(n-- && *d) d++; //find end of dest
+  unsigned dlength = d - dest;
+  n = length - dlength; //subtract length of dest from maximum string length
+
+  if(!n) return dlength + strlen(s);
+
+  while(*s) {
+    if(n != 1) {
+      *d++ = *s;
+      n--;
+    }
+    s++;
+  }
+  *d = 0;
+
+  return dlength + (s - src); //return length of resulting string, sans null terminator
+}
+
+}
+
+#endif

snesfilter/nall/string/trim.hpp

@@ -0,0 +1,54 @@
+#ifndef NALL_STRING_TRIM_HPP
+#define NALL_STRING_TRIM_HPP
+
+namespace nall {
+
+char* ltrim(char *str, const char *key) {
+  if(!key || !*key) return str;
+  while(strbegin(str, key)) {
+    char *dest = str, *src = str + strlen(key);
+    while(true) {
+      *dest = *src++;
+      if(!*dest) break;
+      dest++;
+    }
+  }
+  return str;
+}
+
+char* rtrim(char *str, const char *key) {
+  if(!key || !*key) return str;
+  while(strend(str, key)) str[strlen(str) - strlen(key)] = 0;
+  return str;
+}
+
+char* trim(char *str, const char *key) {
+  return ltrim(rtrim(str, key), key);
+}
+
+char* ltrim_once(char *str, const char *key) {
+  if(!key || !*key) return str;
+  if(strbegin(str, key)) {
+    char *dest = str, *src = str + strlen(key);
+    while(true) {
+      *dest = *src++;
+      if(!*dest) break;
+      dest++;
+    }
+  }
+  return str;
+}
+
+char* rtrim_once(char *str, const char *key) {
+  if(!key || !*key) return str;
+  if(strend(str, key)) str[strlen(str) - strlen(key)] = 0;
+  return str;
+}
+
+char* trim_once(char *str, const char *key) {
+  return ltrim_once(rtrim_once(str, key), key);
+}
+
+}
+
+#endif

snesfilter/nall/string/utility.hpp

@@ -0,0 +1,169 @@
+#ifndef NALL_STRING_UTILITY_HPP
+#define NALL_STRING_UTILITY_HPP
+
+namespace nall {
+
+unsigned strlcpy(string &dest, const char *src, unsigned length) {
+  dest.reserve(length);
+  return strlcpy(dest(), src, length);
+}
+
+unsigned strlcat(string &dest, const char *src, unsigned length) {
+  dest.reserve(length);
+  return strlcat(dest(), src, length);
+}
+
+string substr(const char *src, unsigned start, unsigned length) {
+  string dest;
+  if(length == 0) {
+    //copy entire string
+    dest = src + start;
+  } else {
+    //copy partial string
+    strlcpy(dest, src + start, length + 1);
+  }
+  return dest;
+}
+
+/* very simplistic wrappers to return string& instead of char* type */
+
+string& strlower(string &str) { strlower(str()); return str; }
+string& strupper(string &str) { strupper(str()); return str; }
+string& strtr(string &dest, const char *before, const char *after) { strtr(dest(), before, after); return dest; }
+string& ltrim(string &str, const char *key) { ltrim(str(), key); return str; }
+string& rtrim(string &str, const char *key) { rtrim(str(), key); return str; }
+string& trim (string &str, const char *key) { trim (str(), key); return str; }
+string& ltrim_once(string &str, const char *key) { ltrim_once(str(), key); return str; }
+string& rtrim_once(string &str, const char *key) { rtrim_once(str(), key); return str; }
+string& trim_once (string &str, const char *key) { trim_once (str(), key); return str; }
+
+/* arithmetic <> string */
+
+template<unsigned length, char padding> string strhex(uintmax_t value) {
+  string output;
+  unsigned offset = 0;
+
+  //render string backwards, as we do not know its length yet
+  do {
+    unsigned n = value & 15;
+    output[offset++] = n < 10 ? '0' + n : 'a' + n - 10;
+    value >>= 4;
+  } while(value);
+
+  while(offset < length) output[offset++] = padding;
+  output[offset--] = 0;
+
+  //reverse the string in-place
+  for(unsigned i = 0; i < (offset + 1) >> 1; i++) {
+    char temp = output[i];
+    output[i] = output[offset - i];
+    output[offset - i] = temp;
+  }
+
+  return output;
+}
+
+template<unsigned length, char padding> string strsigned(intmax_t value) {
+  string output;
+  unsigned offset = 0;
+
+  bool negative = value < 0;
+  if(negative) value = abs(value);
+
+  do {
+    unsigned n = value % 10;
+    output[offset++] = '0' + n;
+    value /= 10;
+  } while(value);
+
+  while(offset < length) output[offset++] = padding;
+  if(negative) output[offset++] = '-';
+  output[offset--] = 0;
+
+  for(unsigned i = 0; i < (offset + 1) >> 1; i++) {
+    char temp = output[i];
+    output[i] = output[offset - i];
+    output[offset - i] = temp;
+  }
+
+  return output;
+}
+
+template<unsigned length, char padding> string strunsigned(uintmax_t value) {
+  string output;
+  unsigned offset = 0;
+
+  do {
+    unsigned n = value % 10;
+    output[offset++] = '0' + n;
+    value /= 10;
+  } while(value);
+
+  while(offset < length) output[offset++] = padding;
+  output[offset--] = 0;
+
+  for(unsigned i = 0; i < (offset + 1) >> 1; i++) {
+    char temp = output[i];
+    output[i] = output[offset - i];
+    output[offset - i] = temp;
+  }
+
+  return output;
+}
+
+template<unsigned length, char padding> string strbin(uintmax_t value) {
+  string output;
+  unsigned offset = 0;
+
+  do {
+    unsigned n = value & 1;
+    output[offset++] = '0' + n;
+    value >>= 1;
+  } while(value);
+
+  while(offset < length) output[offset++] = padding;
+  output[offset--] = 0;
+
+  for(unsigned i = 0; i < (offset + 1) >> 1; i++) {
+    char temp = output[i];
+    output[i] = output[offset - i];
+    output[offset - i] = temp;
+  }
+
+  return output;
+}
+
+//using sprintf is certainly not the most ideal method to convert
+//a double to a string ... but attempting to parse a double by
+//hand, digit-by-digit, results in subtle rounding errors.
+unsigned strdouble(char *str, double value) {
+  char buffer[256];
+  sprintf(buffer, "%f", value);
+
+  //remove excess 0's in fraction (2.500000 -> 2.5)
+  for(char *p = buffer; *p; p++) {
+    if(*p == '.') {
+      char *p = buffer + strlen(buffer) - 1;
+      while(*p == '0') {
+        if(*(p - 1) != '.') *p = 0;  //... but not for eg 1.0 -> 1.
+        p--;
+      }
+      break;
+    }
+  }
+
+  unsigned length = strlen(buffer);
+  if(str) strcpy(str, buffer);
+  return length + 1;
+}
+
+string strdouble(double value) {
+  string temp;
+  temp.reserve(strdouble(0, value));
+  strdouble(temp(), value);
+  return temp;
+}
+
+}
+
+#endif

snesfilter/nall/string/variadic.hpp

@@ -0,0 +1,27 @@
+#ifndef NALL_STRING_VARIADIC_HPP
+#define NALL_STRING_VARIADIC_HPP
+
+namespace nall {
+
+static void isprint(string &output) {
+}
+
+template<typename T, typename... Args>
+static void isprint(string &output, T value, Args... args) {
+  output << to_string<T>(value);
+  isprint(output, args...);
+}
+
+template<typename... Args> inline string sprint(Args... args) {
+  string output;
+  isprint(output, args...);
+  return output;
+}
+
+template<typename... Args> inline void print(Args... args) {
+  printf("%s", (const char*)sprint(args...));
+}
+
+}
+
+#endif

snesfilter/nall/string/xml.hpp

@@ -0,0 +1,257 @@
+#ifndef NALL_STRING_XML_HPP
+#define NALL_STRING_XML_HPP
+
+//XML subset parser
+//version 0.05
+
+namespace nall {
+
+struct xml_attribute {
+  string name;
+  string content;
+  virtual string parse() const;
+};
+
+struct xml_element : xml_attribute {
+  string parse() const;
+  linear_vector<xml_attribute> attribute;
+  linear_vector<xml_element> element;
+
+protected:
+  void parse_doctype(const char *&data);
+  bool parse_head(string data);
+  bool parse_body(const char *&data);
+  friend xml_element xml_parse(const char *data);
+};
+
+inline string xml_attribute::parse() const {
+  string data;
+  unsigned offset = 0;
+
+  const char *source = content;
+  while(*source) {
+    if(*source == '&') {
+      if(strbegin(source, "&lt;"))   { data[offset++] = '<';  source += 4; continue; }
+      if(strbegin(source, "&gt;"))   { data[offset++] = '>';  source += 4; continue; }
+      if(strbegin(source, "&amp;"))  { data[offset++] = '&';  source += 5; continue; }
+      if(strbegin(source, "&apos;")) { data[offset++] = '\''; source += 6; continue; }
+      if(strbegin(source, "&quot;")) { data[offset++] = '"';  source += 6; continue; }
+    }
+
+    //reject illegal characters
+    if(*source == '&') return "";
+    if(*source == '<') return "";
+    if(*source == '>') return "";
+
+    data[offset++] = *source++;
+  }
+
+  data[offset] = 0;
+  return data;
+}
+
+inline string xml_element::parse() const {
+  string data;
+  unsigned offset = 0;
+
+  const char *source = content;
+  while(*source) {
+    if(*source == '&') {
+      if(strbegin(source, "&lt;"))   { data[offset++] = '<';  source += 4; continue; }
+      if(strbegin(source, "&gt;"))   { data[offset++] = '>';  source += 4; continue; }
+      if(strbegin(source, "&amp;"))  { data[offset++] = '&';  source += 5; continue; }
+      if(strbegin(source, "&apos;")) { data[offset++] = '\''; source += 6; continue; }
+      if(strbegin(source, "&quot;")) { data[offset++] = '"';  source += 6; continue; }
+    }
+
+    if(strbegin(source, "<!--")) {
+      signed pos = strpos(source, "-->");
+      if(pos == -1) return "";
+      source += pos + 3;
+      continue;
+    }
+
+    if(strbegin(source, "<![CDATA[")) {
+      signed pos = strpos(source, "]]>");
+      if(pos == -1) return "";
+      string cdata = substr(source, 9, pos - 9);
+      data << cdata;
+      offset += strlen(cdata);
+
+      source += offset + 3;
+      continue;
+    }
+
+    //reject illegal characters
+    if(*source == '&') return "";
+    if(*source == '<') return "";
+    if(*source == '>') return "";
+
+    data[offset++] = *source++;
+  }
+
+  data[offset] = 0;
+  return data;
+}
+
+inline void xml_element::parse_doctype(const char *&data) {
+  name = "!DOCTYPE";
+  const char *content_begin = data;
+
+  signed counter = 0;
+  while(*data) {
+    char value = *data++;
+    if(value == '<') counter++;
+    if(value == '>') counter--;
+    if(counter < 0) {
+      content = substr(content_begin, 0, data - content_begin - 1);
+      return;
+    }
+  }
+  throw "...";
+}
+
+inline bool xml_element::parse_head(string data) {
+  data.qreplace("\t", " ");
+  data.qreplace("\r", " ");
+  data.qreplace("\n", " ");
+  while(qstrpos(data, "  ") >= 0) data.qreplace("  ", " ");
+  data.qreplace(" =", "=");
+  data.qreplace("= ", "=");
+  rtrim(data);
+
+  lstring part;
+  part.qsplit(" ", data);
+
+  name = part[0];
+  if(name == "") throw "...";
+
+  for(unsigned i = 1; i < part.size(); i++) {
+    lstring side;
+    side.qsplit("=", part[i]);
+    if(side.size() != 2) throw "...";
+
+    xml_attribute attr;
+    attr.name = side[0];
+    attr.content = side[1];
+    if(strbegin(attr.content, "\"") && strend(attr.content, "\"")) trim_once(attr.content, "\"");
+    else if(strbegin(attr.content, "'") && strend(attr.content, "'")) trim_once(attr.content, "'");
+    else throw "...";
+    attribute.add(attr);
+  }
+}
+
+inline bool xml_element::parse_body(const char *&data) {
+  while(true) {
+    if(!*data) return false;
+    if(*data++ != '<') continue;
+    if(*data == '/') return false;
+
+    if(strbegin(data, "!DOCTYPE") == true) {
+      parse_doctype(data);
+      return true;
+    }
+
+    if(strbegin(data, "!--")) {
+      signed offset = strpos(data, "-->");
+      if(offset == -1) throw "...";
+      data += offset + 3;
+      continue;
+    }
+
+    if(strbegin(data, "![CDATA[")) {
+      signed offset = strpos(data, "]]>");
+      if(offset == -1) throw "...";
+      data += offset + 3;
+      continue;
+    }
+
+    signed offset = strpos(data, ">");
+    if(offset == -1) throw "...";
+
+    string tag = substr(data, 0, offset);
+    data += offset + 1;
+    const char *content_begin = data;
+
+    bool self_terminating = false;
+
+    if(strend(tag, "?") == true) {
+      self_terminating = true;
+      rtrim_once(tag, "?");
+    } else if(strend(tag, "/") == true) {
+      self_terminating = true;
+      rtrim_once(tag, "/");
+    }
+
+    parse_head(tag);
+    if(self_terminating) return true;
+
+    while(*data) {
+      unsigned index = element.size();
+      xml_element node;
+      if(node.parse_body(data) == false) {
+        if(*data == '/') {
+          signed length = data - content_begin - 1;
+          if(length > 0) content = substr(content_begin, 0, length);
+
+          data++;
+          offset = strpos(data, ">");
+          if(offset == -1) throw "...";
+
+          tag = substr(data, 0, offset);
+          data += offset + 1;
+
+          tag.replace("\t", " ");
+          tag.replace("\r", " ");
+          tag.replace("\n", " ");
+          while(strpos(tag, "  ") >= 0) tag.replace("  ", " ");
+          rtrim(tag);
+
+          if(name != tag) throw "...";
+          return true;
+        }
+      } else {
+        element.add(node);
+      }
+    }
+  }
+}
+
+//ensure there is only one root element
+inline bool xml_validate(xml_element &document) {
+  unsigned root_counter = 0;
+
+  for(unsigned i = 0; i < document.element.size(); i++) {
+    string &name = document.element[i].name;
+    if(strbegin(name, "?")) continue;
+    if(strbegin(name, "!")) continue;
+    if(++root_counter > 1) return false;
+  }
+
+  return true;
+}
+
+inline xml_element xml_parse(const char *data) {
+  xml_element self;
+
+  try {
+    while(*data) {
+      xml_element node;
+      if(node.parse_body(data) == false) {
+        break;
+      } else {
+        self.element.add(node);
+      }
+    }
+
+    if(xml_validate(self) == false) throw "...";
+    return self;
+  } catch(const char*) {
+    xml_element empty;
+    return empty;
+  }
+}
+
+}
+
+#endif

snesfilter/nall/ups.hpp

@@ -0,0 +1,190 @@
+#ifndef NALL_UPS_HPP
+#define NALL_UPS_HPP
+
+#include <stdio.h>
+
+#include <nall/algorithm.hpp>
+#include <nall/crc32.hpp>
+#include <nall/file.hpp>
+#include <nall/stdint.hpp>
+
+namespace nall {
+  class ups {
+  public:
+    enum result {
+      ok,
+      patch_unreadable,
+      patch_unwritable,
+      patch_invalid,
+      input_invalid,
+      output_invalid,
+      patch_crc32_invalid,
+      input_crc32_invalid,
+      output_crc32_invalid,
+    };
+
+    ups::result create(const char *patch_fn, const uint8_t *x_data, unsigned x_size, const uint8_t *y_data, unsigned y_size) {
+      if(!fp.open(patch_fn, file::mode_write)) return patch_unwritable;
+
+      crc32 = ~0;
+      uint32_t x_crc32 = crc32_calculate(x_data, x_size);
+      uint32_t y_crc32 = crc32_calculate(y_data, y_size);
+
+      //header
+      write('U');
+      write('P');
+      write('S');
+      write('1');
+      encptr(x_size);
+      encptr(y_size);
+
+      //body
+      unsigned max_size = max(x_size, y_size);
+      unsigned relative = 0;
+      for(unsigned i = 0; i < max_size;) {
+        uint8_t x = i < x_size ? x_data[i] : 0x00;
+        uint8_t y = i < y_size ? y_data[i] : 0x00;
+
+        if(x == y) {
+          i++;
+          continue;
+        }
+
+        encptr(i++ - relative);
+        write(x ^ y);
+
+        while(true) {
+          if(i >= max_size) {
+            write(0x00);
+            break;
+          }
+
+          x = i < x_size ? x_data[i] : 0x00;
+          y = i < y_size ? y_data[i] : 0x00;
+          i++;
+          write(x ^ y);
+          if(x == y) break;
+        }
+
+        relative = i;
+      }
+
+      //footer
+      for(unsigned i = 0; i < 4; i++) write(x_crc32 >> (i << 3));
+      for(unsigned i = 0; i < 4; i++) write(y_crc32 >> (i << 3));
+      uint32_t p_crc32 = ~crc32;
+      for(unsigned i = 0; i < 4; i++) write(p_crc32 >> (i << 3));
+
+      fp.close();
+      return ok;
+    }
+
+    ups::result apply(const uint8_t *p_data, unsigned p_size, const uint8_t *x_data, unsigned x_size, uint8_t *&y_data, unsigned &y_size) {
+      if(p_size < 18) return patch_invalid;
+      p_buffer = p_data;
+
+      crc32 = ~0;
+
+      //header
+      if(read() != 'U') return patch_invalid;
+      if(read() != 'P') return patch_invalid;
+      if(read() != 'S') return patch_invalid;
+      if(read() != '1') return patch_invalid;
+
+      unsigned px_size = decptr();
+      unsigned py_size = decptr();
+
+      //mirror
+      if(x_size != px_size && x_size != py_size) return input_invalid;
+      y_size = (x_size == px_size) ? py_size : px_size;
+      y_data = new uint8_t[y_size]();
+
+      for(unsigned i = 0; i < x_size && i < y_size; i++) y_data[i] = x_data[i];
+      for(unsigned i = x_size; i < y_size; i++) y_data[i] = 0x00;
+
+      //body
+      unsigned relative = 0;
+      while(p_buffer < p_data + p_size - 12) {
+        relative += decptr();
+
+        while(true) {
+          uint8_t x = read();
+          if(x && relative < y_size) {
+            uint8_t y = relative < x_size ? x_data[relative] : 0x00;
+            y_data[relative] = x ^ y;
+          }
+          relative++;
+          if(!x) break;
+        }
+      }
+
+      //footer
+      unsigned px_crc32 = 0, py_crc32 = 0, pp_crc32 = 0;
+      for(unsigned i = 0; i < 4; i++) px_crc32 |= read() << (i << 3);
+      for(unsigned i = 0; i < 4; i++) py_crc32 |= read() << (i << 3);
+      uint32_t p_crc32 = ~crc32;
+      for(unsigned i = 0; i < 4; i++) pp_crc32 |= read() << (i << 3);
+
+      uint32_t x_crc32 = crc32_calculate(x_data, x_size);
+      uint32_t y_crc32 = crc32_calculate(y_data, y_size);
+
+      if(px_size != py_size) {
+        if(x_size == px_size && x_crc32 != px_crc32) return input_crc32_invalid;
+        if(x_size == py_size && x_crc32 != py_crc32) return input_crc32_invalid;
+        if(y_size == px_size && y_crc32 != px_crc32) return output_crc32_invalid;
+        if(y_size == py_size && y_crc32 != py_crc32) return output_crc32_invalid;
+      } else {
+        if(x_crc32 != px_crc32 && x_crc32 != py_crc32) return input_crc32_invalid;
+        if(y_crc32 != px_crc32 && y_crc32 != py_crc32) return output_crc32_invalid;
+        if(x_crc32 == y_crc32 && px_crc32 != py_crc32) return output_crc32_invalid;
+        if(x_crc32 != y_crc32 && px_crc32 == py_crc32) return output_crc32_invalid;
+      }
+
+      if(p_crc32 != pp_crc32) return patch_crc32_invalid;
+      return ok;
+    }
+
+  private:
+    file fp;
+    uint32_t crc32;
+    const uint8_t *p_buffer;
+
+    uint8_t read() {
+      uint8_t n = *p_buffer++;
+      crc32 = crc32_adjust(crc32, n);
+      return n;
+    }
+
+    void write(uint8_t n) {
+      fp.write(n);
+      crc32 = crc32_adjust(crc32, n);
+    }
+
+    void encptr(uint64_t offset) {
+      while(true) {
+        uint64_t x = offset & 0x7f;
+        offset >>= 7;
+        if(offset == 0) {
+          write(0x80 | x);
+          break;
+        }
+        write(x);
+        offset--;
+      }
+    }
+
+    uint64_t decptr() {
+      uint64_t offset = 0, shift = 1;
+      while(true) {
+        uint8_t x = read();
+        offset += (x & 0x7f) * shift;
+        if(x & 0x80) break;
+        shift <<= 7;
+        offset += shift;
+      }
+      return offset;
+    }
+  };
+}
+
+#endif

snesfilter/nall/utf8.hpp

@@ -0,0 +1,72 @@
+#ifndef NALL_UTF8_HPP
+#define NALL_UTF8_HPP
+
+//UTF-8 <> UTF-16 conversion
+//used only for Win32; Linux, etc use UTF-8 internally
+
+#if defined(_WIN32)
+
+#undef _WIN32_WINNT
+#define _WIN32_WINNT 0x0501
+#undef  NOMINMAX
+#define NOMINMAX
+#include <windows.h>
+#undef interface
+
+namespace nall {
+  //UTF-8 to UTF-16
+  class utf16_t {
+  public:
+    operator wchar_t*() {
+      return buffer;
+    }
+
+    operator const wchar_t*() const {
+      return buffer;
+    }
+
+    utf16_t(const char *s = "") {
+      if(!s) s = "";
+      unsigned length = MultiByteToWideChar(CP_UTF8, 0, s, -1, 0, 0);
+      buffer = new wchar_t[length + 1]();
+      MultiByteToWideChar(CP_UTF8, 0, s, -1, buffer, length);
+    }
+
+    ~utf16_t() {
+      delete[] buffer;
+    }
+
+  private:
+    wchar_t *buffer;
+  };
+
+  //UTF-16 to UTF-8
+  class utf8_t {
+  public:
+    operator char*() {
+      return buffer;
+    }
+
+    operator const char*() const {
+      return buffer;
+    }
+
+    utf8_t(const wchar_t *s = L"") {
+      if(!s) s = L"";
+      unsigned length = WideCharToMultiByte(CP_UTF8, 0, s, -1, 0, 0, (const char*)0, (BOOL*)0);
+      buffer = new char[length + 1]();
+      WideCharToMultiByte(CP_UTF8, 0, s, -1, buffer, length, (const char*)0, (BOOL*)0);
+    }
+
+    ~utf8_t() {
+      delete[] buffer;
+    }
+
+  private:
+    char *buffer;
+  };
+}
+
+#endif  //if defined(_WIN32)
+
+#endif

snesfilter/nall/utility.hpp

@@ -0,0 +1,30 @@
+#ifndef NALL_UTILITY_HPP
+#define NALL_UTILITY_HPP
+
+#include <type_traits>
+#include <utility>
+
+namespace nall {
+  template<bool C, typename T = bool> struct enable_if { typedef T type; };
+  template<typename T> struct enable_if<false, T> {};
+  template<typename C, typename T = bool> struct mp_enable_if : enable_if<C::value, T> {};
+
+  template<typename T> inline void swap(T &x, T &y) {
+    T temp(std::move(x));
+    x = std::move(y);
+    y = std::move(temp);
+  }
+
+  template<typename T> struct base_from_member {
+    T value;
+    base_from_member(T value_) : value(value_) {}
+  };
+
+  template<typename T> inline T* allocate(size_t size, const T &value) {
+    T *array = new T[size];
+    for(size_t i = 0; i < size; i++) array[i] = value;
+    return array;
+  }
+}
+
+#endif

snesfilter/nall/varint.hpp

@@ -0,0 +1,92 @@
+#ifndef NALL_VARINT_HPP
+#define NALL_VARINT_HPP
+
+#include <nall/bit.hpp>
+#include <nall/static.hpp>
+#include <nall/traits.hpp>
+
+namespace nall {
+  template<unsigned bits> class uint_t {
+  private:
+    enum { bytes = (bits + 7) >> 3 };  //minimum number of bytes needed to store value
+    typedef typename static_if<
+      sizeof(int) >= bytes,
+      unsigned int,
+      typename static_if<
+        sizeof(long) >= bytes,
+        unsigned long,
+        typename static_if<
+          sizeof(long long) >= bytes,
+          unsigned long long,
+          void
+        >::type
+      >::type
+    >::type T;
+    static_assert<!is_void<T>::value> uint_assert;
+    T data;
+
+  public:
+    inline operator T() const { return data; }
+    inline T operator ++(int) { T r = data; data = uclip<bits>(data + 1); return r; }
+    inline T operator --(int) { T r = data; data = uclip<bits>(data - 1); return r; }
+    inline T operator ++() { return data = uclip<bits>(data + 1); }
+    inline T operator --() { return data = uclip<bits>(data - 1); }
+    inline T operator  =(const T i) { return data = uclip<bits>(i); }
+    inline T operator |=(const T i) { return data = uclip<bits>(data  | i); }
+    inline T operator ^=(const T i) { return data = uclip<bits>(data  ^ i); }
+    inline T operator &=(const T i) { return data = uclip<bits>(data  & i); }
+    inline T operator<<=(const T i) { return data = uclip<bits>(data << i); }
+    inline T operator>>=(const T i) { return data = uclip<bits>(data >> i); }
+    inline T operator +=(const T i) { return data = uclip<bits>(data  + i); }
+    inline T operator -=(const T i) { return data = uclip<bits>(data  - i); }
+    inline T operator *=(const T i) { return data = uclip<bits>(data  * i); }
+    inline T operator /=(const T i) { return data = uclip<bits>(data  / i); }
+    inline T operator %=(const T i) { return data = uclip<bits>(data  % i); }
+
+    inline uint_t() : data(0) {}
+    inline uint_t(const T i) : data(uclip<bits>(i)) {}
+  };
+
+  template<unsigned bits> class int_t {
+  private:
+    enum { bytes = (bits + 7) >> 3 };  //minimum number of bytes needed to store value
+    typedef typename static_if<
+      sizeof(int) >= bytes,
+      signed int,
+      typename static_if<
+        sizeof(long) >= bytes,
+        signed long,
+        typename static_if<
+          sizeof(long long) >= bytes,
+          signed long long,
+          void
+        >::type
+      >::type
+    >::type T;
+    static_assert<!is_void<T>::value> int_assert;
+    T data;
+
+  public:
+    inline operator T() const { return data; }
+    inline T operator ++(int) { T r = data; data = sclip<bits>(data + 1); return r; }
+    inline T operator --(int) { T r = data; data = sclip<bits>(data - 1); return r; }
+    inline T operator ++() { return data = sclip<bits>(data + 1); }
+    inline T operator --() { return data = sclip<bits>(data - 1); }
+    inline T operator  =(const T i) { return data = sclip<bits>(i); }
+    inline T operator |=(const T i) { return data = sclip<bits>(data  | i); }
+    inline T operator ^=(const T i) { return data = sclip<bits>(data  ^ i); }
+    inline T operator &=(const T i) { return data = sclip<bits>(data  & i); }
+    inline T operator<<=(const T i) { return data = sclip<bits>(data << i); }
+    inline T operator>>=(const T i) { return data = sclip<bits>(data >> i); }
+    inline T operator +=(const T i) { return data = sclip<bits>(data  + i); }
+    inline T operator -=(const T i) { return data = sclip<bits>(data  - i); }
+    inline T operator *=(const T i) { return data = sclip<bits>(data  * i); }
+    inline T operator /=(const T i) { return data = sclip<bits>(data  / i); }
+    inline T operator %=(const T i) { return data = sclip<bits>(data  % i); }
+
+    inline int_t() : data(0) {}
+    inline int_t(const T i) : data(sclip<bits>(i)) {}
+  };
+}
+
+#endif

snesfilter/nall/vector.hpp

@@ -0,0 +1,240 @@
+#ifndef NALL_VECTOR_HPP
+#define NALL_VECTOR_HPP
+
+#include <initializer_list>
+#include <new>
+#include <type_traits>
+#include <utility>
+#include <nall/algorithm.hpp>
+#include <nall/bit.hpp>
+#include <nall/concept.hpp>
+#include <nall/utility.hpp>
+
+namespace nall {
+  //linear_vector
+  //memory: O(capacity * 2)
+  //
+  //linear_vector uses placement new + manual destructor calls to create a
+  //contiguous block of memory for all objects. accessing individual elements
+  //is fast, though resizing the array incurs significant overhead.
+  //reserve() overhead is reduced from quadratic time to amortized constant time
+  //by resizing twice as much as requested.
+  //
+  //if objects hold memory address references to themselves (introspection), a
+  //valid copy constructor will be needed to keep pointers valid.
+
+  template<typename T> class linear_vector {
+  protected:
+    T *pool;
+    unsigned poolsize, objectsize;
+
+  public:
+    unsigned size() const { return objectsize; }
+    unsigned capacity() const { return poolsize; }
+
+    void reset() {
+      if(pool) {
+        for(unsigned i = 0; i < objectsize; i++) pool[i].~T();
+        free(pool);
+      }
+      pool = 0;
+      poolsize = 0;
+      objectsize = 0;
+    }
+
+    void reserve(unsigned newsize) {
+      newsize = bit::round(newsize);  //round to nearest power of two (for amortized growth)
+
+      T *poolcopy = (T*)malloc(newsize * sizeof(T));
+      for(unsigned i = 0; i < min(objectsize, newsize); i++) new(poolcopy + i) T(pool[i]);
+      for(unsigned i = 0; i < objectsize; i++) pool[i].~T();
+      free(pool);
+      pool = poolcopy;
+      poolsize = newsize;
+      objectsize = min(objectsize, newsize);
+    }
+
+    void resize(unsigned newsize) {
+      if(newsize > poolsize) reserve(newsize);
+
+      if(newsize < objectsize) {
+        //vector is shrinking; destroy excess objects
+        for(unsigned i = newsize; i < objectsize; i++) pool[i].~T();
+      } else if(newsize > objectsize) {
+        //vector is expanding; allocate new objects
+        for(unsigned i = objectsize; i < newsize; i++) new(pool + i) T;
+      }
+
+      objectsize = newsize;
+    }
+
+    void add(const T data) {
+      if(objectsize + 1 > poolsize) reserve(objectsize + 1);
+      new(pool + objectsize++) T(data);
+    }
+
+    inline T& operator[](unsigned index) {
+      if(index >= objectsize) resize(index + 1);
+      return pool[index];
+    }
+
+    inline const T& operator[](unsigned index) const {
+      if(index >= objectsize) throw "vector[] out of bounds";
+      return pool[index];
+    }
+
+    //copy
+    inline linear_vector<T>& operator=(const linear_vector<T> &source) {
+      reset();
+      reserve(source.capacity());
+      resize(source.size());
+      for(unsigned i = 0; i < source.size(); i++) operator[](i) = source.operator[](i);
+      return *this;
+    }
+
+    linear_vector(const linear_vector<T> &source) : pool(0), poolsize(0), objectsize(0) {
+      operator=(source);
+    }
+
+    //move
+    inline linear_vector<T>& operator=(linear_vector<T> &&source) {
+      reset();
+      pool = source.pool;
+      poolsize = source.poolsize;
+      objectsize = source.objectsize;
+      source.pool = 0;
+      source.reset();
+      return *this;
+    }
+
+    linear_vector(linear_vector<T> &&source) : pool(0), poolsize(0), objectsize(0) {
+      operator=(std::move(source));
+    }
+
+    //construction
+    linear_vector() : pool(0), poolsize(0), objectsize(0) {
+    }
+
+    linear_vector(std::initializer_list<T> list) : pool(0), poolsize(0), objectsize(0) {
+      for(const T *p = list.begin(); p != list.end(); ++p) add(*p);
+    }
+
+    ~linear_vector() {
+      reset();
+    }
+  };
+
+  //pointer_vector
+  //memory: O(1)
+  //
+  //pointer_vector keeps an array of pointers to each vector object. this adds
+  //significant overhead to individual accesses, but allows for optimal memory
+  //utilization.
+  //
+  //by guaranteeing that the base memory address of each objects never changes,
+  //this avoids the need for an object to have a valid copy constructor.
+
+  template<typename T> class pointer_vector {
+  protected:
+    T **pool;
+    unsigned poolsize, objectsize;
+
+  public:
+    unsigned size() const { return objectsize; }
+    unsigned capacity() const { return poolsize; }
+
+    void reset() {
+      if(pool) {
+        for(unsigned i = 0; i < objectsize; i++) { if(pool[i]) delete pool[i]; }
+        free(pool);
+      }
+      pool = 0;
+      poolsize = 0;
+      objectsize = 0;
+    }
+
+    void reserve(unsigned newsize) {
+      newsize = bit::round(newsize);  //round to nearest power of two (for amortized growth)
+
+      for(unsigned i = newsize; i < objectsize; i++) {
+        if(pool[i]) { delete pool[i]; pool[i] = 0; }
+      }
+
+      pool = (T**)realloc(pool, newsize * sizeof(T*));
+      for(unsigned i = poolsize; i < newsize; i++) pool[i] = 0;
+      poolsize = newsize;
+      objectsize = min(objectsize, newsize);
+    }
+
+    void resize(unsigned newsize) {
+      if(newsize > poolsize) reserve(newsize);
+
+      for(unsigned i = newsize; i < objectsize; i++) {
+        if(pool[i]) { delete pool[i]; pool[i] = 0; }
+      }
+
+      objectsize = newsize;
+    }
+
+    void add(const T data) {
+      if(objectsize + 1 > poolsize) reserve(objectsize + 1);
+      pool[objectsize++] = new T(data);
+    }
+
+    inline T& operator[](unsigned index) {
+      if(index >= objectsize) resize(index + 1);
+      if(!pool[index]) pool[index] = new T;
+      return *pool[index];
+    }
+
+    inline const T& operator[](unsigned index) const {
+      if(index >= objectsize || !pool[index]) throw "vector[] out of bounds";
+      return *pool[index];
+    }
+
+    //copy
+    inline pointer_vector<T>& operator=(const pointer_vector<T> &source) {
+      reset();
+      reserve(source.capacity());
+      resize(source.size());
+      for(unsigned i = 0; i < source.size(); i++) operator[](i) = source.operator[](i);
+      return *this;
+    }
+
+    pointer_vector(const pointer_vector<T> &source) : pool(0), poolsize(0), objectsize(0) {
+      operator=(source);
+    }
+
+    //move
+    inline pointer_vector<T>& operator=(pointer_vector<T> &&source) {
+      reset();
+      pool = source.pool;
+      poolsize = source.poolsize;
+      objectsize = source.objectsize;
+      source.pool = 0;
+      source.reset();
+      return *this;
+    }
+
+    pointer_vector(pointer_vector<T> &&source) : pool(0), poolsize(0), objectsize(0) {
+      operator=(std::move(source));
+    }
+
+    //construction
+    pointer_vector() : pool(0), poolsize(0), objectsize(0) {
+    }
+
+    pointer_vector(std::initializer_list<T> list) : pool(0), poolsize(0), objectsize(0) {
+      for(const T *p = list.begin(); p != list.end(); ++p) add(*p);
+    }
+
+    ~pointer_vector() {
+      reset();
+    }
+  };
+
+  template<typename T> struct has_size<linear_vector<T>> { enum { value = true }; };
+  template<typename T> struct has_size<pointer_vector<T>> { enum { value = true }; };
+}
+
+#endif

snesfilter/ntsc/ntsc.cpp

@@ -0,0 +1,396 @@
+#include "snes_ntsc/snes_ntsc.h"
+#include "snes_ntsc/snes_ntsc.c"
+
+#include "ntsc.moc.hpp"
+#include "ntsc.moc"
+
+void NTSCFilter::bind(configuration &config) {
+  config.attach(hue         =  0.0, "snesfilter.ntsc.hue");
+  config.attach(saturation  =  0.0, "snesfilter.ntsc.saturation");
+  config.attach(contrast    =  0.0, "snesfilter.ntsc.contrast");
+  config.attach(brightness  =  0.0, "snesfilter.ntsc.brightness");
+  config.attach(sharpness   =  0.0, "snesfilter.ntsc.sharpness");
+  config.attach(gamma       =  0.0, "snesfilter.ntsc.gamma");
+  config.attach(resolution  =  0.0, "snesfilter.ntsc.resolution");
+  config.attach(artifacts   =  0.0, "snesfilter.ntsc.artifacts");
+  config.attach(fringing    =  0.0, "snesfilter.ntsc.fringing");
+  config.attach(bleed       =  0.0, "snesfilter.ntsc.bleed");
+  config.attach(mergeFields = true, "snesfilter.ntsc.mergeFields");
+}
+
+void NTSCFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  outwidth  = SNES_NTSC_OUT_WIDTH(256);
+  outheight = height;
+}
+
+void NTSCFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(!ntsc) return;
+
+  width = SNES_NTSC_OUT_WIDTH(256);
+  burst ^= burst_toggle;
+
+  pitch >>= 1;
+  outpitch >>= 2;
+
+  unsigned line_burst = burst;
+  for(unsigned y = 0; y < height;) {
+    const uint16_t *in = input + y * pitch;
+    uint32_t *out = output + y * outpitch;
+
+    //render as many lines in one snes_ntsc_blit as possible:
+    //do this by determining for how many lines the width stays the same
+    unsigned rheight = 1;
+    unsigned rwidth  = line[y];
+    while(y + rheight < height && rwidth == line[y + rheight]) rheight++;
+
+    if(rwidth == 256) {
+      snes_ntsc_blit      (ntsc, in, pitch, line_burst, rwidth, rheight, out, outpitch << 2);
+    } else {
+      snes_ntsc_blit_hires(ntsc, in, pitch, line_burst, rwidth, rheight, out, outpitch << 2);
+    }
+
+    line_burst = (line_burst + rheight) % 3;
+    y += rheight;
+  }
+}
+
+QWidget* NTSCFilter::settings() {
+  if(!widget) {
+    widget = new QWidget;
+    widget->setWindowTitle("NTSC Filter Configuration");
+
+    layout = new QVBoxLayout;
+    layout->setAlignment(Qt::AlignTop);
+    widget->setLayout(layout);
+
+    gridLayout = new QGridLayout;
+    layout->addLayout(gridLayout);
+
+    basicSettings = new QLabel("<b>Basic settings:</b>");
+    gridLayout->addWidget(basicSettings, 0, 0, 1, 3);
+
+    hueLabel = new QLabel("Hue:");
+    gridLayout->addWidget(hueLabel, 1, 0);
+
+    hueValue = new QLabel;
+    hueValue->setMinimumWidth(hueValue->fontMetrics().width("-100.0"));
+    hueValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(hueValue, 1, 1);
+
+    hueSlider = new QSlider(Qt::Horizontal);
+    hueSlider->setMinimum(-100);
+    hueSlider->setMaximum(+100);
+    gridLayout->addWidget(hueSlider, 1, 2);
+
+    saturationLabel = new QLabel("Saturation:");
+    gridLayout->addWidget(saturationLabel, 2, 0);
+
+    saturationValue = new QLabel;
+    saturationValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(saturationValue, 2, 1);
+
+    saturationSlider = new QSlider(Qt::Horizontal);
+    saturationSlider->setMinimum(-100);
+    saturationSlider->setMaximum(+100);
+    gridLayout->addWidget(saturationSlider, 2, 2);
+
+    contrastLabel = new QLabel("Contrast:");
+    gridLayout->addWidget(contrastLabel, 3, 0);
+
+    contrastValue = new QLabel;
+    contrastValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(contrastValue, 3, 1);
+
+    contrastSlider = new QSlider(Qt::Horizontal);
+    contrastSlider->setMinimum(-100);
+    contrastSlider->setMaximum(+100);
+    gridLayout->addWidget(contrastSlider, 3, 2);
+
+    brightnessLabel = new QLabel("Brightness:");
+    gridLayout->addWidget(brightnessLabel, 4, 0);
+
+    brightnessValue = new QLabel;
+    brightnessValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(brightnessValue, 4, 1);
+
+    brightnessSlider = new QSlider(Qt::Horizontal);
+    brightnessSlider->setMinimum(-100);
+    brightnessSlider->setMaximum(+100);
+    gridLayout->addWidget(brightnessSlider, 4, 2);
+
+    sharpnessLabel = new QLabel("Sharpness:");
+    gridLayout->addWidget(sharpnessLabel, 5, 0);
+
+    sharpnessValue = new QLabel;
+    sharpnessValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(sharpnessValue, 5, 1);
+
+    sharpnessSlider = new QSlider(Qt::Horizontal);
+    sharpnessSlider->setMinimum(-100);
+    sharpnessSlider->setMaximum(+100);
+    gridLayout->addWidget(sharpnessSlider, 5, 2);
+
+    advancedSettings = new QLabel("<b>Advanced settings:</b>");
+    gridLayout->addWidget(advancedSettings, 6, 0, 1, 3);
+
+    gammaLabel = new QLabel("Gamma:");
+    gridLayout->addWidget(gammaLabel, 7, 0);
+
+    gammaValue = new QLabel;
+    gammaValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(gammaValue, 7, 1);
+
+    gammaSlider = new QSlider(Qt::Horizontal);
+    gammaSlider->setMinimum(-100);
+    gammaSlider->setMaximum(+100);
+    gridLayout->addWidget(gammaSlider, 7, 2);
+
+    resolutionLabel = new QLabel("Resolution:");
+    gridLayout->addWidget(resolutionLabel, 8, 0);
+
+    resolutionValue = new QLabel;
+    resolutionValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(resolutionValue, 8, 1);
+
+    resolutionSlider = new QSlider(Qt::Horizontal);
+    resolutionSlider->setMinimum(-100);
+    resolutionSlider->setMaximum(+100);
+    gridLayout->addWidget(resolutionSlider, 8, 2);
+
+    artifactsLabel = new QLabel("Artifacts:");
+    gridLayout->addWidget(artifactsLabel, 9, 0);
+
+    artifactsValue = new QLabel;
+    artifactsValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(artifactsValue, 9, 1);
+
+    artifactsSlider = new QSlider(Qt::Horizontal);
+    artifactsSlider->setMinimum(-100);
+    artifactsSlider->setMaximum(+100);
+    gridLayout->addWidget(artifactsSlider, 9, 2);
+
+    fringingLabel = new QLabel("Fringing:");
+    gridLayout->addWidget(fringingLabel, 10, 0);
+
+    fringingValue = new QLabel;
+    fringingValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(fringingValue, 10, 1);
+
+    fringingSlider = new QSlider(Qt::Horizontal);
+    fringingSlider->setMinimum(-100);
+    fringingSlider->setMaximum(+100);
+    gridLayout->addWidget(fringingSlider, 10, 2);
+
+    bleedLabel = new QLabel("Color bleed:");
+    gridLayout->addWidget(bleedLabel, 11, 0);
+
+    bleedValue = new QLabel;
+    bleedValue->setAlignment(Qt::AlignHCenter);
+    gridLayout->addWidget(bleedValue, 11, 1);
+
+    bleedSlider = new QSlider(Qt::Horizontal);
+    bleedSlider->setMinimum(-100);
+    bleedSlider->setMaximum(+100);
+    gridLayout->addWidget(bleedSlider, 11, 2);
+
+    mergeFieldsBox = new QCheckBox("Merge even and odd fields to reduce flicker");
+    gridLayout->addWidget(mergeFieldsBox, 12, 0, 1, 3);
+
+    presets = new QLabel("<b>Presets:</b>");
+    gridLayout->addWidget(presets, 13, 0, 1, 3);
+
+    controlLayout = new QHBoxLayout;
+    layout->addLayout(controlLayout);
+
+    rfPreset = new QPushButton("RF");
+    controlLayout->addWidget(rfPreset);
+
+    compositePreset = new QPushButton("Composite");
+    controlLayout->addWidget(compositePreset);
+
+    svideoPreset = new QPushButton("S-Video");
+    controlLayout->addWidget(svideoPreset);
+
+    rgbPreset = new QPushButton("RGB");
+    controlLayout->addWidget(rgbPreset);
+
+    monoPreset = new QPushButton("Monochrome");
+    controlLayout->addWidget(monoPreset);
+
+    spacer = new QWidget;
+    spacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
+    spacer->setMinimumWidth(50);
+    controlLayout->addWidget(spacer);
+
+    ok = new QPushButton("Ok");
+    controlLayout->addWidget(ok);
+
+    blockSignals = true;
+    loadSettingsFromConfig();
+    syncUiToSettings();
+    initialize();
+
+    connect(hueSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(saturationSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(contrastSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(brightnessSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(sharpnessSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(gammaSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(resolutionSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(artifactsSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(fringingSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(bleedSlider, SIGNAL(valueChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(mergeFieldsBox, SIGNAL(stateChanged(int)), this, SLOT(syncSettingsToUi()));
+    connect(rfPreset, SIGNAL(released()), this, SLOT(setRfPreset()));
+    connect(compositePreset, SIGNAL(released()), this, SLOT(setCompositePreset()));
+    connect(svideoPreset, SIGNAL(released()), this, SLOT(setSvideoPreset()));
+    connect(rgbPreset, SIGNAL(released()), this, SLOT(setRgbPreset()));
+    connect(monoPreset, SIGNAL(released()), this, SLOT(setMonoPreset()));
+    connect(ok, SIGNAL(released()), widget, SLOT(hide()));
+
+    blockSignals = false;
+  }
+
+  return widget;
+}
+
+void NTSCFilter::initialize() {
+  burst = 0;
+  burst_toggle = (setup.merge_fields ? 0 : 1);  //don't toggle burst when fields are merged
+  snes_ntsc_init(ntsc, &setup);
+}
+
+void NTSCFilter::loadSettingsFromConfig() {
+  setup.hue = hue;
+  setup.saturation = saturation;
+  setup.contrast = contrast;
+  setup.brightness = brightness;
+  setup.sharpness = sharpness;
+
+  setup.gamma = gamma;
+  setup.resolution = resolution;
+  setup.artifacts = artifacts;
+  setup.fringing = fringing;
+  setup.bleed = bleed;
+
+  setup.merge_fields = mergeFields;
+}
+
+void NTSCFilter::syncUiToSettings() {
+  blockSignals = true;
+
+  hue = setup.hue;
+  saturation = setup.saturation;
+  contrast = setup.contrast;
+  brightness = setup.brightness;
+  sharpness = setup.sharpness;
+
+  gamma = setup.gamma;
+  resolution = setup.resolution;
+  artifacts = setup.artifacts;
+  fringing = setup.fringing;
+  bleed = setup.bleed;
+
+  mergeFields = setup.merge_fields;
+
+  hueValue->setText(string() << hue);
+  hueSlider->setSliderPosition(hue * 100);
+
+  saturationValue->setText(string() << saturation);
+  saturationSlider->setSliderPosition(saturation * 100);
+
+  contrastValue->setText(string() << contrast);
+  contrastSlider->setSliderPosition(contrast * 100);
+
+  brightnessValue->setText(string() << brightness);
+  brightnessSlider->setSliderPosition(brightness * 100);
+
+  sharpnessValue->setText(string() << sharpness);
+  sharpnessSlider->setSliderPosition(sharpness * 100);
+
+  gammaValue->setText(string() << gamma);
+  gammaSlider->setSliderPosition(gamma * 100);
+
+  resolutionValue->setText(string() << resolution);
+  resolutionSlider->setSliderPosition(resolution * 100);
+
+  artifactsValue->setText(string() << artifacts);
+  artifactsSlider->setSliderPosition(artifacts * 100);
+
+  fringingValue->setText(string() << fringing);
+  fringingSlider->setSliderPosition(fringing * 100);
+
+  bleedValue->setText(string() << bleed);
+  bleedSlider->setSliderPosition(bleed * 100);
+
+  mergeFieldsBox->setChecked(mergeFields);
+
+  blockSignals = false;
+}
+
+void NTSCFilter::syncSettingsToUi() {
+  if(blockSignals) return;
+
+  hue = hueSlider->sliderPosition() / 100.0;
+  saturation = saturationSlider->sliderPosition() / 100.0;
+  contrast = contrastSlider->sliderPosition() / 100.0;
+  brightness = brightnessSlider->sliderPosition() / 100.0;
+  sharpness = sharpnessSlider->sliderPosition() / 100.0;
+
+  gamma = gammaSlider->sliderPosition() / 100.0;
+  resolution = resolutionSlider->sliderPosition() / 100.0;
+  artifacts = artifactsSlider->sliderPosition() / 100.0;
+  fringing = fringingSlider->sliderPosition() / 100.0;
+  bleed = bleedSlider->sliderPosition() / 100.0;
+
+  mergeFields = mergeFieldsBox->isChecked();
+
+  loadSettingsFromConfig();
+  syncUiToSettings();
+  initialize();
+}
+
+void NTSCFilter::setRfPreset() {
+  static snes_ntsc_setup_t defaults;
+  setup = defaults;
+  syncUiToSettings();
+  initialize();
+}
+
+void NTSCFilter::setCompositePreset() {
+  setup = snes_ntsc_composite;
+  syncUiToSettings();
+  initialize();
+}
+
+void NTSCFilter::setSvideoPreset() {
+  setup = snes_ntsc_svideo;
+  syncUiToSettings();
+  initialize();
+}
+
+void NTSCFilter::setRgbPreset() {
+  setup = snes_ntsc_rgb;
+  syncUiToSettings();
+  initialize();
+}
+
+void NTSCFilter::setMonoPreset() {
+  setup = snes_ntsc_monochrome;
+  syncUiToSettings();
+  initialize();
+}
+
+NTSCFilter::NTSCFilter() : widget(0) {
+  ntsc = (snes_ntsc_t*)malloc(sizeof *ntsc);
+  static snes_ntsc_setup_t defaults;
+  setup = defaults;
+  initialize();
+}
+
+NTSCFilter::~NTSCFilter() {
+  if(ntsc) free(ntsc);
+}

snesfilter/ntsc/ntsc.moc.hpp

@@ -0,0 +1,91 @@
+class NTSCFilter : public QObject {
+  Q_OBJECT
+
+public:
+  void bind(configuration&);
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+  QWidget* settings();
+
+  NTSCFilter();
+  ~NTSCFilter();
+
+private:
+  void initialize();
+  void loadSettingsFromConfig();
+  void syncUiToSettings();
+
+private slots:
+  void syncSettingsToUi();
+  void setRfPreset();
+  void setCompositePreset();
+  void setSvideoPreset();
+  void setRgbPreset();
+  void setMonoPreset();
+
+private:
+  QWidget *widget;
+  QVBoxLayout *layout;
+  QGridLayout *gridLayout;
+  QLabel *basicSettings;
+  QLabel *hueLabel;
+  QLabel *hueValue;
+  QSlider *hueSlider;
+  QLabel *saturationLabel;
+  QLabel *saturationValue;
+  QSlider *saturationSlider;
+  QLabel *contrastLabel;
+  QLabel *contrastValue;
+  QSlider *contrastSlider;
+  QLabel *brightnessLabel;
+  QLabel *brightnessValue;
+  QSlider *brightnessSlider;
+  QLabel *sharpnessLabel;
+  QLabel *sharpnessValue;
+  QSlider *sharpnessSlider;
+  QLabel *advancedSettings;
+  QLabel *gammaLabel;
+  QLabel *gammaValue;
+  QSlider *gammaSlider;
+  QLabel *resolutionLabel;
+  QLabel *resolutionValue;
+  QSlider *resolutionSlider;
+  QLabel *artifactsLabel;
+  QLabel *artifactsValue;
+  QSlider *artifactsSlider;
+  QLabel *fringingLabel;
+  QLabel *fringingValue;
+  QSlider *fringingSlider;
+  QLabel *bleedLabel;
+  QLabel *bleedValue;
+  QSlider *bleedSlider;
+  QCheckBox *mergeFieldsBox;
+  QLabel *presets;
+  QHBoxLayout *controlLayout;
+  QPushButton *rfPreset;
+  QPushButton *compositePreset;
+  QPushButton *svideoPreset;
+  QPushButton *rgbPreset;
+  QPushButton *monoPreset;
+  QWidget *spacer;
+  QPushButton *ok;
+
+  bool blockSignals;
+
+  struct snes_ntsc_t *ntsc;
+  snes_ntsc_setup_t setup;
+  int burst, burst_toggle;
+
+  //settings
+  double hue;
+  double saturation;
+  double contrast;
+  double brightness;
+  double sharpness;
+  double gamma;
+  double resolution;
+  double artifacts;
+  double fringing;
+  double bleed;
+  bool mergeFields;
+} filter_ntsc;

snesfilter/ntsc/snes_ntsc/snes_ntsc.c

@@ -0,0 +1,251 @@
+/* snes_ntsc 0.2.2. http://www.slack.net/~ant/ */
+
+#include "snes_ntsc.h"
+
+/* Copyright (C) 2006-2007 Shay Green. This module is free software; you
+can redistribute it and/or modify it under the terms of the GNU Lesser
+General Public License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version. This
+module is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+details. You should have received a copy of the GNU Lesser General Public
+License along with this module; if not, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
+
+snes_ntsc_setup_t const snes_ntsc_monochrome = { 0,-1, 0, 0,.2,  0,.2,-.2,-.2,-1,  1, 0, 0 };
+snes_ntsc_setup_t const snes_ntsc_composite  = { 0, 0, 0, 0, 0,  0, 0,  0,  0, 0,  1, 0, 0 };
+snes_ntsc_setup_t const snes_ntsc_svideo     = { 0, 0, 0, 0,.2,  0,.2, -1, -1, 0,  1, 0, 0 };
+snes_ntsc_setup_t const snes_ntsc_rgb        = { 0, 0, 0, 0,.2,  0,.7, -1, -1,-1,  1, 0, 0 };
+
+#define alignment_count 3
+#define burst_count     3
+#define rescale_in      8
+#define rescale_out     7
+
+#define artifacts_mid   1.0f
+#define fringing_mid    1.0f
+#define std_decoder_hue 0
+
+#define rgb_bits        7 /* half normal range to allow for doubled hires pixels */
+#define gamma_size      32
+
+#include "snes_ntsc_impl.h"
+
+/* 3 input pixels -> 8 composite samples */
+pixel_info_t const snes_ntsc_pixels [alignment_count] = {
+	{ PIXEL_OFFSET( -4, -9 ), { 1, 1, .6667f, 0 } },
+	{ PIXEL_OFFSET( -2, -7 ), {       .3333f, 1, 1, .3333f } },
+	{ PIXEL_OFFSET(  0, -5 ), {                  0, .6667f, 1, 1 } },
+};
+
+static void merge_kernel_fields( snes_ntsc_rgb_t* io )
+{
+	int n;
+	for ( n = burst_size; n; --n )
+	{
+		snes_ntsc_rgb_t p0 = io [burst_size * 0] + rgb_bias;
+		snes_ntsc_rgb_t p1 = io [burst_size * 1] + rgb_bias;
+		snes_ntsc_rgb_t p2 = io [burst_size * 2] + rgb_bias;
+		/* merge colors without losing precision */
+		io [burst_size * 0] =
+				((p0 + p1 - ((p0 ^ p1) & snes_ntsc_rgb_builder)) >> 1) - rgb_bias;
+		io [burst_size * 1] =
+				((p1 + p2 - ((p1 ^ p2) & snes_ntsc_rgb_builder)) >> 1) - rgb_bias;
+		io [burst_size * 2] =
+				((p2 + p0 - ((p2 ^ p0) & snes_ntsc_rgb_builder)) >> 1) - rgb_bias;
+		++io;
+	}
+}
+
+static void correct_errors( snes_ntsc_rgb_t color, snes_ntsc_rgb_t* out )
+{
+	int n;
+	for ( n = burst_count; n; --n )
+	{
+		unsigned i;
+		for ( i = 0; i < rgb_kernel_size / 2; i++ )
+		{
+			snes_ntsc_rgb_t error = color -
+					out [i    ] - out [(i+12)%14+14] - out [(i+10)%14+28] -
+					out [i + 7] - out [i + 5    +14] - out [i + 3    +28];
+			DISTRIBUTE_ERROR( i+3+28, i+5+14, i+7 );
+		}
+		out += alignment_count * rgb_kernel_size;
+	}
+}
+
+void snes_ntsc_init( snes_ntsc_t* ntsc, snes_ntsc_setup_t const* setup )
+{
+	int merge_fields;
+	int entry;
+	init_t impl;
+	if ( !setup )
+		setup = &snes_ntsc_composite;
+	init( &impl, setup );
+	
+	merge_fields = setup->merge_fields;
+	if ( setup->artifacts <= -1 && setup->fringing <= -1 )
+		merge_fields = 1;
+	
+	for ( entry = 0; entry < snes_ntsc_palette_size; entry++ )
+	{
+		/* Reduce number of significant bits of source color. Clearing the
+		low bits of R and B were least notictable. Modifying green was too
+		noticeable. */
+		int ir = entry >> 8 & 0x1E;
+		int ig = entry >> 4 & 0x1F;
+		int ib = entry << 1 & 0x1E;
+		
+		#if SNES_NTSC_BSNES_COLORTBL
+			if ( setup->bsnes_colortbl )
+			{
+				int bgr15 = (ib << 10) | (ig << 5) | ir;
+				unsigned long rgb16 = setup->bsnes_colortbl [bgr15];
+				ir = rgb16 >> 11 & 0x1E;
+				ig = rgb16 >>  6 & 0x1F;
+				ib = rgb16       & 0x1E;
+			}
+		#endif
+		
+		{
+			float rr = impl.to_float [ir];
+			float gg = impl.to_float [ig];
+			float bb = impl.to_float [ib];
+			
+			float y, i, q = RGB_TO_YIQ( rr, gg, bb, y, i );
+			
+			int r, g, b = YIQ_TO_RGB( y, i, q, impl.to_rgb, int, r, g );
+			snes_ntsc_rgb_t rgb = PACK_RGB( r, g, b );
+			
+			snes_ntsc_rgb_t* out = ntsc->table [entry];
+			gen_kernel( &impl, y, i, q, out );
+			if ( merge_fields )
+				merge_kernel_fields( out );
+			correct_errors( rgb, out );
+		}
+	}
+}
+
+#ifndef SNES_NTSC_NO_BLITTERS
+
+void snes_ntsc_blit( snes_ntsc_t const* ntsc, SNES_NTSC_IN_T const* input, long in_row_width,
+		int burst_phase, int in_width, int in_height, void* rgb_out, long out_pitch )
+{
+	int chunk_count = (in_width - 1) / snes_ntsc_in_chunk;
+	for ( ; in_height; --in_height )
+	{
+		SNES_NTSC_IN_T const* line_in = input;
+		SNES_NTSC_BEGIN_ROW( ntsc, burst_phase,
+				snes_ntsc_black, snes_ntsc_black, SNES_NTSC_ADJ_IN( *line_in ) );
+		snes_ntsc_out_t* restrict line_out = (snes_ntsc_out_t*) rgb_out;
+		int n;
+		++line_in;
+		
+		for ( n = chunk_count; n; --n )
+		{
+			/* order of input and output pixels must not be altered */
+			SNES_NTSC_COLOR_IN( 0, SNES_NTSC_ADJ_IN( line_in [0] ) );
+			SNES_NTSC_RGB_OUT( 0, line_out [0], SNES_NTSC_OUT_DEPTH );
+			SNES_NTSC_RGB_OUT( 1, line_out [1], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 1, SNES_NTSC_ADJ_IN( line_in [1] ) );
+			SNES_NTSC_RGB_OUT( 2, line_out [2], SNES_NTSC_OUT_DEPTH );
+			SNES_NTSC_RGB_OUT( 3, line_out [3], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 2, SNES_NTSC_ADJ_IN( line_in [2] ) );
+			SNES_NTSC_RGB_OUT( 4, line_out [4], SNES_NTSC_OUT_DEPTH );
+			SNES_NTSC_RGB_OUT( 5, line_out [5], SNES_NTSC_OUT_DEPTH );
+			SNES_NTSC_RGB_OUT( 6, line_out [6], SNES_NTSC_OUT_DEPTH );
+			
+			line_in  += 3;
+			line_out += 7;
+		}
+		
+		/* finish final pixels */
+		SNES_NTSC_COLOR_IN( 0, snes_ntsc_black );
+		SNES_NTSC_RGB_OUT( 0, line_out [0], SNES_NTSC_OUT_DEPTH );
+		SNES_NTSC_RGB_OUT( 1, line_out [1], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 1, snes_ntsc_black );
+		SNES_NTSC_RGB_OUT( 2, line_out [2], SNES_NTSC_OUT_DEPTH );
+		SNES_NTSC_RGB_OUT( 3, line_out [3], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 2, snes_ntsc_black );
+		SNES_NTSC_RGB_OUT( 4, line_out [4], SNES_NTSC_OUT_DEPTH );
+		SNES_NTSC_RGB_OUT( 5, line_out [5], SNES_NTSC_OUT_DEPTH );
+		SNES_NTSC_RGB_OUT( 6, line_out [6], SNES_NTSC_OUT_DEPTH );
+		
+		burst_phase = (burst_phase + 1) % snes_ntsc_burst_count;
+		input += in_row_width;
+		rgb_out = (char*) rgb_out + out_pitch;
+	}
+}
+
+void snes_ntsc_blit_hires( snes_ntsc_t const* ntsc, SNES_NTSC_IN_T const* input, long in_row_width,
+		int burst_phase, int in_width, int in_height, void* rgb_out, long out_pitch )
+{
+	int chunk_count = (in_width - 2) / (snes_ntsc_in_chunk * 2);
+	for ( ; in_height; --in_height )
+	{
+		SNES_NTSC_IN_T const* line_in = input;
+		SNES_NTSC_HIRES_ROW( ntsc, burst_phase,
+				snes_ntsc_black, snes_ntsc_black, snes_ntsc_black,
+				SNES_NTSC_ADJ_IN( line_in [0] ),
+				SNES_NTSC_ADJ_IN( line_in [1] ) );
+		snes_ntsc_out_t* restrict line_out = (snes_ntsc_out_t*) rgb_out;
+		int n;
+		line_in += 2;
+		
+		for ( n = chunk_count; n; --n )
+		{
+			/* twice as many input pixels per chunk */
+			SNES_NTSC_COLOR_IN( 0, SNES_NTSC_ADJ_IN( line_in [0] ) );
+			SNES_NTSC_HIRES_OUT( 0, line_out [0], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 1, SNES_NTSC_ADJ_IN( line_in [1] ) );
+			SNES_NTSC_HIRES_OUT( 1, line_out [1], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 2, SNES_NTSC_ADJ_IN( line_in [2] ) );
+			SNES_NTSC_HIRES_OUT( 2, line_out [2], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 3, SNES_NTSC_ADJ_IN( line_in [3] ) );
+			SNES_NTSC_HIRES_OUT( 3, line_out [3], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 4, SNES_NTSC_ADJ_IN( line_in [4] ) );
+			SNES_NTSC_HIRES_OUT( 4, line_out [4], SNES_NTSC_OUT_DEPTH );
+			
+			SNES_NTSC_COLOR_IN( 5, SNES_NTSC_ADJ_IN( line_in [5] ) );
+			SNES_NTSC_HIRES_OUT( 5, line_out [5], SNES_NTSC_OUT_DEPTH );
+			SNES_NTSC_HIRES_OUT( 6, line_out [6], SNES_NTSC_OUT_DEPTH );
+			
+			line_in  += 6;
+			line_out += 7;
+		}
+		
+		SNES_NTSC_COLOR_IN( 0, snes_ntsc_black );
+		SNES_NTSC_HIRES_OUT( 0, line_out [0], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 1, snes_ntsc_black );
+		SNES_NTSC_HIRES_OUT( 1, line_out [1], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 2, snes_ntsc_black );
+		SNES_NTSC_HIRES_OUT( 2, line_out [2], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 3, snes_ntsc_black );
+		SNES_NTSC_HIRES_OUT( 3, line_out [3], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 4, snes_ntsc_black );
+		SNES_NTSC_HIRES_OUT( 4, line_out [4], SNES_NTSC_OUT_DEPTH );
+		
+		SNES_NTSC_COLOR_IN( 5, snes_ntsc_black );
+		SNES_NTSC_HIRES_OUT( 5, line_out [5], SNES_NTSC_OUT_DEPTH );
+		SNES_NTSC_HIRES_OUT( 6, line_out [6], SNES_NTSC_OUT_DEPTH );
+		
+		burst_phase = (burst_phase + 1) % snes_ntsc_burst_count;
+		input += in_row_width;
+		rgb_out = (char*) rgb_out + out_pitch;
+	}
+}
+
+#endif

snesfilter/ntsc/snes_ntsc/snes_ntsc.h

@@ -0,0 +1,228 @@
+/* SNES NTSC video filter */
+
+/* snes_ntsc 0.2.2 */
+#ifndef SNES_NTSC_H
+#define SNES_NTSC_H
+
+#include "snes_ntsc_config.h"
+
+#ifdef __cplusplus
+	extern "C" {
+#endif
+
+/* Image parameters, ranging from -1.0 to 1.0. Actual internal values shown
+in parenthesis and should remain fairly stable in future versions. */
+typedef struct snes_ntsc_setup_t
+{
+	/* Basic parameters */
+	double hue;        /* -1 = -180 degrees     +1 = +180 degrees */
+	double saturation; /* -1 = grayscale (0.0)  +1 = oversaturated colors (2.0) */
+	double contrast;   /* -1 = dark (0.5)       +1 = light (1.5) */
+	double brightness; /* -1 = dark (0.5)       +1 = light (1.5) */
+	double sharpness;  /* edge contrast enhancement/blurring */
+	
+	/* Advanced parameters */
+	double gamma;      /* -1 = dark (1.5)       +1 = light (0.5) */
+	double resolution; /* image resolution */
+	double artifacts;  /* artifacts caused by color changes */
+	double fringing;   /* color artifacts caused by brightness changes */
+	double bleed;      /* color bleed (color resolution reduction) */
+	int merge_fields;  /* if 1, merges even and odd fields together to reduce flicker */
+	float const* decoder_matrix; /* optional RGB decoder matrix, 6 elements */
+	
+	unsigned long const* bsnes_colortbl; /* undocumented; set to 0 */
+} snes_ntsc_setup_t;
+
+/* Video format presets */
+extern snes_ntsc_setup_t const snes_ntsc_composite; /* color bleeding + artifacts */
+extern snes_ntsc_setup_t const snes_ntsc_svideo;    /* color bleeding only */
+extern snes_ntsc_setup_t const snes_ntsc_rgb;       /* crisp image */
+extern snes_ntsc_setup_t const snes_ntsc_monochrome;/* desaturated + artifacts */
+
+/* Initializes and adjusts parameters. Can be called multiple times on the same
+snes_ntsc_t object. Can pass NULL for either parameter. */
+typedef struct snes_ntsc_t snes_ntsc_t;
+void snes_ntsc_init( snes_ntsc_t* ntsc, snes_ntsc_setup_t const* setup );
+
+/* Filters one or more rows of pixels. Input pixel format is set by SNES_NTSC_IN_FORMAT
+and output RGB depth is set by SNES_NTSC_OUT_DEPTH. Both default to 16-bit RGB.
+In_row_width is the number of pixels to get to the next input row. Out_pitch
+is the number of *bytes* to get to the next output row. */
+void snes_ntsc_blit( snes_ntsc_t const* ntsc, SNES_NTSC_IN_T const* input,
+		long in_row_width, int burst_phase, int in_width, int in_height,
+		void* rgb_out, long out_pitch );
+
+void snes_ntsc_blit_hires( snes_ntsc_t const* ntsc, SNES_NTSC_IN_T const* input,
+		long in_row_width, int burst_phase, int in_width, int in_height,
+		void* rgb_out, long out_pitch );
+
+/* Number of output pixels written by low-res blitter for given input width. Width
+might be rounded down slightly; use SNES_NTSC_IN_WIDTH() on result to find rounded
+value. Guaranteed not to round 256 down at all. */
+#define SNES_NTSC_OUT_WIDTH( in_width ) \
+	((((in_width) - 1) / snes_ntsc_in_chunk + 1) * snes_ntsc_out_chunk)
+
+/* Number of low-res input pixels that will fit within given output width. Might be
+rounded down slightly; use SNES_NTSC_OUT_WIDTH() on result to find rounded
+value. */
+#define SNES_NTSC_IN_WIDTH( out_width ) \
+	(((out_width) / snes_ntsc_out_chunk - 1) * snes_ntsc_in_chunk + 1)
+
+
+/* Interface for user-defined custom blitters */
+
+enum { snes_ntsc_in_chunk    = 3  }; /* number of input pixels read per chunk */
+enum { snes_ntsc_out_chunk   = 7  }; /* number of output pixels generated per chunk */
+enum { snes_ntsc_black       = 0  }; /* palette index for black */
+enum { snes_ntsc_burst_count = 3  }; /* burst phase cycles through 0, 1, and 2 */
+
+/* Begins outputting row and starts three pixels. First pixel will be cut off a bit.
+Use snes_ntsc_black for unused pixels. Declares variables, so must be before first
+statement in a block (unless you're using C++). */
+#define SNES_NTSC_BEGIN_ROW( ntsc, burst, pixel0, pixel1, pixel2 ) \
+	char const* ktable = \
+		(char const*) (ntsc)->table + burst * (snes_ntsc_burst_size * sizeof (snes_ntsc_rgb_t));\
+	SNES_NTSC_BEGIN_ROW_6_( pixel0, pixel1, pixel2, SNES_NTSC_IN_FORMAT, ktable )
+
+/* Begins input pixel */
+#define SNES_NTSC_COLOR_IN( index, color ) \
+	SNES_NTSC_COLOR_IN_( index, color, SNES_NTSC_IN_FORMAT, ktable )
+
+/* Generates output pixel. Bits can be 24, 16, 15, 14, 32 (treated as 24), or 0:
+24:          RRRRRRRR GGGGGGGG BBBBBBBB (8-8-8 RGB)
+16:                   RRRRRGGG GGGBBBBB (5-6-5 RGB)
+15:                    RRRRRGG GGGBBBBB (5-5-5 RGB)
+14:                    BBBBBGG GGGRRRRR (5-5-5 BGR, native SNES format)
+ 0: xxxRRRRR RRRxxGGG GGGGGxxB BBBBBBBx (native internal format; x = junk bits) */
+#define SNES_NTSC_RGB_OUT( index, rgb_out, bits ) \
+	SNES_NTSC_RGB_OUT_14_( index, rgb_out, bits, 1 )
+
+/* Hires equivalents */
+#define SNES_NTSC_HIRES_ROW( ntsc, burst, pixel1, pixel2, pixel3, pixel4, pixel5 ) \
+	char const* ktable = \
+		(char const*) (ntsc)->table + burst * (snes_ntsc_burst_size * sizeof (snes_ntsc_rgb_t));\
+	unsigned const snes_ntsc_pixel1_ = (pixel1);\
+	snes_ntsc_rgb_t const* kernel1  = SNES_NTSC_IN_FORMAT( ktable, snes_ntsc_pixel1_ );\
+	unsigned const snes_ntsc_pixel2_ = (pixel2);\
+	snes_ntsc_rgb_t const* kernel2  = SNES_NTSC_IN_FORMAT( ktable, snes_ntsc_pixel2_ );\
+	unsigned const snes_ntsc_pixel3_ = (pixel3);\
+	snes_ntsc_rgb_t const* kernel3  = SNES_NTSC_IN_FORMAT( ktable, snes_ntsc_pixel3_ );\
+	unsigned const snes_ntsc_pixel4_ = (pixel4);\
+	snes_ntsc_rgb_t const* kernel4  = SNES_NTSC_IN_FORMAT( ktable, snes_ntsc_pixel4_ );\
+	unsigned const snes_ntsc_pixel5_ = (pixel5);\
+	snes_ntsc_rgb_t const* kernel5  = SNES_NTSC_IN_FORMAT( ktable, snes_ntsc_pixel5_ );\
+	snes_ntsc_rgb_t const* kernel0 = kernel1;\
+	snes_ntsc_rgb_t const* kernelx0;\
+	snes_ntsc_rgb_t const* kernelx1 = kernel1;\
+	snes_ntsc_rgb_t const* kernelx2 = kernel1;\
+	snes_ntsc_rgb_t const* kernelx3 = kernel1;\
+	snes_ntsc_rgb_t const* kernelx4 = kernel1;\
+	snes_ntsc_rgb_t const* kernelx5 = kernel1
+
+#define SNES_NTSC_HIRES_OUT( x, rgb_out, bits ) {\
+	snes_ntsc_rgb_t raw_ =\
+		kernel0  [ x       ] + kernel2  [(x+5)%7+14] + kernel4  [(x+3)%7+28] +\
+		kernelx0 [(x+7)%7+7] + kernelx2 [(x+5)%7+21] + kernelx4 [(x+3)%7+35] +\
+		kernel1  [(x+6)%7  ] + kernel3  [(x+4)%7+14] + kernel5  [(x+2)%7+28] +\
+		kernelx1 [(x+6)%7+7] + kernelx3 [(x+4)%7+21] + kernelx5 [(x+2)%7+35];\
+	SNES_NTSC_CLAMP_( raw_, 0 );\
+	SNES_NTSC_RGB_OUT_( rgb_out, (bits), 0 );\
+}
+
+
+/* private */
+enum { snes_ntsc_entry_size = 128 };
+enum { snes_ntsc_palette_size = 0x2000 };
+typedef unsigned long snes_ntsc_rgb_t;
+struct snes_ntsc_t {
+	snes_ntsc_rgb_t table [snes_ntsc_palette_size] [snes_ntsc_entry_size];
+};
+enum { snes_ntsc_burst_size = snes_ntsc_entry_size / snes_ntsc_burst_count };
+
+#define SNES_NTSC_RGB16( ktable, n ) \
+	(snes_ntsc_rgb_t const*) (ktable + ((n & 0x001E) | (n >> 1 & 0x03E0) | (n >> 2 & 0x3C00)) * \
+			(snes_ntsc_entry_size / 2 * sizeof (snes_ntsc_rgb_t)))
+
+#define SNES_NTSC_BGR15( ktable, n ) \
+	(snes_ntsc_rgb_t const*) (ktable + ((n << 9 & 0x3C00) | (n & 0x03E0) | (n >> 10 & 0x001E)) * \
+			(snes_ntsc_entry_size / 2 * sizeof (snes_ntsc_rgb_t)))
+
+/* common 3->7 ntsc macros */
+#define SNES_NTSC_BEGIN_ROW_6_( pixel0, pixel1, pixel2, ENTRY, table ) \
+	unsigned const snes_ntsc_pixel0_ = (pixel0);\
+	snes_ntsc_rgb_t const* kernel0  = ENTRY( table, snes_ntsc_pixel0_ );\
+	unsigned const snes_ntsc_pixel1_ = (pixel1);\
+	snes_ntsc_rgb_t const* kernel1  = ENTRY( table, snes_ntsc_pixel1_ );\
+	unsigned const snes_ntsc_pixel2_ = (pixel2);\
+	snes_ntsc_rgb_t const* kernel2  = ENTRY( table, snes_ntsc_pixel2_ );\
+	snes_ntsc_rgb_t const* kernelx0;\
+	snes_ntsc_rgb_t const* kernelx1 = kernel0;\
+	snes_ntsc_rgb_t const* kernelx2 = kernel0
+
+#define SNES_NTSC_RGB_OUT_14_( x, rgb_out, bits, shift ) {\
+	snes_ntsc_rgb_t raw_ =\
+		kernel0  [x       ] + kernel1  [(x+12)%7+14] + kernel2  [(x+10)%7+28] +\
+		kernelx0 [(x+7)%14] + kernelx1 [(x+ 5)%7+21] + kernelx2 [(x+ 3)%7+35];\
+	SNES_NTSC_CLAMP_( raw_, shift );\
+	SNES_NTSC_RGB_OUT_( rgb_out, bits, shift );\
+}
+
+/* common ntsc macros */
+#define snes_ntsc_rgb_builder    ((1L << 21) | (1 << 11) | (1 << 1))
+#define snes_ntsc_clamp_mask     (snes_ntsc_rgb_builder * 3 / 2)
+#define snes_ntsc_clamp_add      (snes_ntsc_rgb_builder * 0x101)
+#define SNES_NTSC_CLAMP_( io, shift ) {\
+	snes_ntsc_rgb_t sub = (io) >> (9-(shift)) & snes_ntsc_clamp_mask;\
+	snes_ntsc_rgb_t clamp = snes_ntsc_clamp_add - sub;\
+	io |= clamp;\
+	clamp -= sub;\
+	io &= clamp;\
+}
+
+#define SNES_NTSC_COLOR_IN_( index, color, ENTRY, table ) {\
+	unsigned color_;\
+	kernelx##index = kernel##index;\
+	kernel##index = (color_ = (color), ENTRY( table, color_ ));\
+}
+
+/* x is always zero except in snes_ntsc library */
+/* original routine */
+/*
+#define SNES_NTSC_RGB_OUT_( rgb_out, bits, x ) {\
+	if ( bits == 16 )\
+		rgb_out = (raw_>>(13-x)& 0xF800)|(raw_>>(8-x)&0x07E0)|(raw_>>(4-x)&0x001F);\
+	if ( bits == 24 || bits == 32 )\
+		rgb_out = (raw_>>(5-x)&0xFF0000)|(raw_>>(3-x)&0xFF00)|(raw_>>(1-x)&0xFF);\
+	if ( bits == 15 )\
+		rgb_out = (raw_>>(14-x)& 0x7C00)|(raw_>>(9-x)&0x03E0)|(raw_>>(4-x)&0x001F);\
+	if ( bits == 14 )\
+		rgb_out = (raw_>>(24-x)& 0x001F)|(raw_>>(9-x)&0x03E0)|(raw_<<(6+x)&0x7C00);\
+	if ( bits == 0 )\
+		rgb_out = raw_ << x;\
+}
+*/
+
+/* custom bsnes routine -- hooks into bsnes colortable */
+#define SNES_NTSC_RGB_OUT_( rgb_out, bits, x ) {\
+	if ( bits == 16 ) {\
+		rgb_out = (raw_>>(13-x)& 0xF800)|(raw_>>(8-x)&0x07E0)|(raw_>>(4-x)&0x001F);\
+		rgb_out = ((rgb_out&0xf800)>>11)|((rgb_out&0x07c0)>>1)|((rgb_out&0x001f)<<10);\
+		rgb_out = colortable[rgb_out];\
+	} else if ( bits == 24 || bits == 32 ) {\
+		rgb_out = (raw_>>(5-x)&0xFF0000)|(raw_>>(3-x)&0xFF00)|(raw_>>(1-x)&0xFF);\
+		rgb_out = ((rgb_out&0xf80000)>>19)|((rgb_out&0x00f800)>>6)|((rgb_out&0x0000f8)<<7);\
+		rgb_out = colortable[rgb_out];\
+	} else if ( bits == 15 ) {\
+		rgb_out = (raw_>>(14-x)& 0x7C00)|(raw_>>(9-x)&0x03E0)|(raw_>>(4-x)&0x001F);\
+		rgb_out = ((rgb_out&0x7c00)>>10)|((rgb_out&0x03e0))|((rgb_out&0x001f)<<10);\
+		rgb_out = colortable[rgb_out];\
+	} else {\
+		rgb_out = raw_ << x;\
+	}\
+}
+
+#ifdef __cplusplus
+	}
+#endif
+
+#endif

snesfilter/ntsc/snes_ntsc/snes_ntsc_config.h

@@ -0,0 +1,26 @@
+/* Configure library by modifying this file */
+
+#ifndef SNES_NTSC_CONFIG_H
+#define SNES_NTSC_CONFIG_H
+
+/* Format of source pixels */
+/* #define SNES_NTSC_IN_FORMAT SNES_NTSC_RGB16 */
+#define SNES_NTSC_IN_FORMAT SNES_NTSC_BGR15
+
+/* The following affect the built-in blitter only; a custom blitter can
+handle things however it wants. */
+
+/* Bits per pixel of output. Can be 15, 16, 32, or 24 (same as 32). */
+#define SNES_NTSC_OUT_DEPTH 32
+
+/* Type of input pixel values */
+#define SNES_NTSC_IN_T unsigned short
+
+/* Each raw pixel input value is passed through this. You might want to mask
+the pixel index if you use the high bits as flags, etc. */
+#define SNES_NTSC_ADJ_IN( in ) in
+
+/* For each pixel, this is the basic operation:
+output_color = SNES_NTSC_ADJ_IN( SNES_NTSC_IN_T ) */
+
+#endif

snesfilter/ntsc/snes_ntsc/snes_ntsc_impl.h

@@ -0,0 +1,439 @@
+/* snes_ntsc 0.2.2. http://www.slack.net/~ant/ */
+
+/* Common implementation of NTSC filters */
+
+#include <assert.h>
+#include <math.h>
+
+/* Copyright (C) 2006 Shay Green. This module is free software; you
+can redistribute it and/or modify it under the terms of the GNU Lesser
+General Public License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version. This
+module is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+details. You should have received a copy of the GNU Lesser General Public
+License along with this module; if not, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */
+
+#define DISABLE_CORRECTION 0
+
+#undef PI
+#define PI 3.14159265358979323846f
+
+#ifndef LUMA_CUTOFF
+	#define LUMA_CUTOFF 0.20
+#endif
+#ifndef gamma_size
+	#define gamma_size 1
+#endif
+#ifndef rgb_bits
+	#define rgb_bits 8
+#endif
+#ifndef artifacts_max
+	#define artifacts_max (artifacts_mid * 1.5f)
+#endif
+#ifndef fringing_max
+	#define fringing_max (fringing_mid * 2)
+#endif
+#ifndef STD_HUE_CONDITION
+	#define STD_HUE_CONDITION( setup ) 1
+#endif
+
+#define ext_decoder_hue     (std_decoder_hue + 15)
+#define rgb_unit            (1 << rgb_bits)
+#define rgb_offset          (rgb_unit * 2 + 0.5f)
+
+enum { burst_size  = snes_ntsc_entry_size / burst_count };
+enum { kernel_half = 16 };
+enum { kernel_size = kernel_half * 2 + 1 };
+
+typedef struct init_t
+{
+	float to_rgb [burst_count * 6];
+	float to_float [gamma_size];
+	float contrast;
+	float brightness;
+	float artifacts;
+	float fringing;
+	float kernel [rescale_out * kernel_size * 2];
+} init_t;
+
+#define ROTATE_IQ( i, q, sin_b, cos_b ) {\
+	float t;\
+	t = i * cos_b - q * sin_b;\
+	q = i * sin_b + q * cos_b;\
+	i = t;\
+}
+
+static void init_filters( init_t* impl, snes_ntsc_setup_t const* setup )
+{
+#if rescale_out > 1
+	float kernels [kernel_size * 2];
+#else
+	float* const kernels = impl->kernel;
+#endif
+
+	/* generate luma (y) filter using sinc kernel */
+	{
+		/* sinc with rolloff (dsf) */
+		float const rolloff = 1 + (float) setup->sharpness * (float) 0.032;
+		float const maxh = 32;
+		float const pow_a_n = (float) pow( rolloff, maxh );
+		float sum;
+		int i;
+		/* quadratic mapping to reduce negative (blurring) range */
+		float to_angle = (float) setup->resolution + 1;
+		to_angle = PI / maxh * (float) LUMA_CUTOFF * (to_angle * to_angle + 1);
+		
+		kernels [kernel_size * 3 / 2] = maxh; /* default center value */
+		for ( i = 0; i < kernel_half * 2 + 1; i++ )
+		{
+			int x = i - kernel_half;
+			float angle = x * to_angle;
+			/* instability occurs at center point with rolloff very close to 1.0 */
+			if ( x || pow_a_n > (float) 1.056 || pow_a_n < (float) 0.981 )
+			{
+				float rolloff_cos_a = rolloff * (float) cos( angle );
+				float num = 1 - rolloff_cos_a -
+						pow_a_n * (float) cos( maxh * angle ) +
+						pow_a_n * rolloff * (float) cos( (maxh - 1) * angle );
+				float den = 1 - rolloff_cos_a - rolloff_cos_a + rolloff * rolloff;
+				float dsf = num / den;
+				kernels [kernel_size * 3 / 2 - kernel_half + i] = dsf - (float) 0.5;
+			}
+		}
+		
+		/* apply blackman window and find sum */
+		sum = 0;
+		for ( i = 0; i < kernel_half * 2 + 1; i++ )
+		{
+			float x = PI * 2 / (kernel_half * 2) * i;
+			float blackman = 0.42f - 0.5f * (float) cos( x ) + 0.08f * (float) cos( x * 2 );
+			sum += (kernels [kernel_size * 3 / 2 - kernel_half + i] *= blackman);
+		}
+		
+		/* normalize kernel */
+		sum = 1.0f / sum;
+		for ( i = 0; i < kernel_half * 2 + 1; i++ )
+		{
+			int x = kernel_size * 3 / 2 - kernel_half + i;
+			kernels [x] *= sum;
+			assert( kernels [x] == kernels [x] ); /* catch numerical instability */
+		}
+	}
+
+	/* generate chroma (iq) filter using gaussian kernel */
+	{
+		float const cutoff_factor = -0.03125f;
+		float cutoff = (float) setup->bleed;
+		int i;
+		
+		if ( cutoff < 0 )
+		{
+			/* keep extreme value accessible only near upper end of scale (1.0) */
+			cutoff *= cutoff;
+			cutoff *= cutoff;
+			cutoff *= cutoff;
+			cutoff *= -30.0f / 0.65f;
+		}
+		cutoff = cutoff_factor - 0.65f * cutoff_factor * cutoff;
+		
+		for ( i = -kernel_half; i <= kernel_half; i++ )
+			kernels [kernel_size / 2 + i] = (float) exp( i * i * cutoff );
+		
+		/* normalize even and odd phases separately */
+		for ( i = 0; i < 2; i++ )
+		{
+			float sum = 0;
+			int x;
+			for ( x = i; x < kernel_size; x += 2 )
+				sum += kernels [x];
+			
+			sum = 1.0f / sum;
+			for ( x = i; x < kernel_size; x += 2 )
+			{
+				kernels [x] *= sum;
+				assert( kernels [x] == kernels [x] ); /* catch numerical instability */
+			}
+		}
+	}
+	
+	/*
+	printf( "luma:\n" );
+	for ( i = kernel_size; i < kernel_size * 2; i++ )
+		printf( "%f\n", kernels [i] );
+	printf( "chroma:\n" );
+	for ( i = 0; i < kernel_size; i++ )
+		printf( "%f\n", kernels [i] );
+	*/
+	
+	/* generate linear rescale kernels */
+	#if rescale_out > 1
+	{
+		float weight = 1.0f;
+		float* out = impl->kernel;
+		int n = rescale_out;
+		do
+		{
+			float remain = 0;
+			int i;
+			weight -= 1.0f / rescale_in;
+			for ( i = 0; i < kernel_size * 2; i++ )
+			{
+				float cur = kernels [i];
+				float m = cur * weight;
+				*out++ = m + remain;
+				remain = cur - m;
+			}
+		}
+		while ( --n );
+	}
+	#endif
+}
+
+static float const default_decoder [6] =
+	{ 0.956f, 0.621f, -0.272f, -0.647f, -1.105f, 1.702f };
+
+static void init( init_t* impl, snes_ntsc_setup_t const* setup )
+{
+	impl->brightness = (float) setup->brightness * (0.5f * rgb_unit) + rgb_offset;
+	impl->contrast   = (float) setup->contrast   * (0.5f * rgb_unit) + rgb_unit;
+	#ifdef default_palette_contrast
+		if ( !setup->palette )
+			impl->contrast *= default_palette_contrast;
+	#endif
+	
+	impl->artifacts = (float) setup->artifacts;
+	if ( impl->artifacts > 0 )
+		impl->artifacts *= artifacts_max - artifacts_mid;
+	impl->artifacts = impl->artifacts * artifacts_mid + artifacts_mid;
+
+	impl->fringing = (float) setup->fringing;
+	if ( impl->fringing > 0 )
+		impl->fringing *= fringing_max - fringing_mid;
+	impl->fringing = impl->fringing * fringing_mid + fringing_mid;
+	
+	init_filters( impl, setup );
+	
+	/* generate gamma table */
+	if ( gamma_size > 1 )
+	{
+		float const to_float = 1.0f / (gamma_size - (gamma_size > 1));
+		float const gamma = 1.1333f - (float) setup->gamma * 0.5f;
+		/* match common PC's 2.2 gamma to TV's 2.65 gamma */
+		int i;
+		for ( i = 0; i < gamma_size; i++ )
+			impl->to_float [i] =
+					(float) pow( i * to_float, gamma ) * impl->contrast + impl->brightness;
+	}
+	
+	/* setup decoder matricies */
+	{
+		float hue = (float) setup->hue * PI + PI / 180 * ext_decoder_hue;
+		float sat = (float) setup->saturation + 1;
+		float const* decoder = setup->decoder_matrix;
+		if ( !decoder )
+		{
+			decoder = default_decoder;
+			if ( STD_HUE_CONDITION( setup ) )
+				hue += PI / 180 * (std_decoder_hue - ext_decoder_hue);
+		}
+		
+		{
+			float s = (float) sin( hue ) * sat;
+			float c = (float) cos( hue ) * sat;
+			float* out = impl->to_rgb;
+			int n;
+			
+			n = burst_count;
+			do
+			{
+				float const* in = decoder;
+				int n = 3;
+				do
+				{
+					float i = *in++;
+					float q = *in++;
+					*out++ = i * c - q * s;
+					*out++ = i * s + q * c;
+				}
+				while ( --n );
+				if ( burst_count <= 1 )
+					break;
+				ROTATE_IQ( s, c, 0.866025f, -0.5f ); /* +120 degrees */
+			}
+			while ( --n );
+		}
+	}
+}
+
+/* kernel generation */
+
+#define RGB_TO_YIQ( r, g, b, y, i ) (\
+	(y = (r) * 0.299f + (g) * 0.587f + (b) * 0.114f),\
+	(i = (r) * 0.596f - (g) * 0.275f - (b) * 0.321f),\
+	((r) * 0.212f - (g) * 0.523f + (b) * 0.311f)\
+)
+
+#define YIQ_TO_RGB( y, i, q, to_rgb, type, r, g ) (\
+	r = (type) (y + to_rgb [0] * i + to_rgb [1] * q),\
+	g = (type) (y + to_rgb [2] * i + to_rgb [3] * q),\
+	(type) (y + to_rgb [4] * i + to_rgb [5] * q)\
+)
+
+#define PACK_RGB( r, g, b ) ((r) << 21 | (g) << 11 | (b) << 1)
+
+enum { rgb_kernel_size = burst_size / alignment_count };
+enum { rgb_bias = rgb_unit * 2 * snes_ntsc_rgb_builder };
+
+typedef struct pixel_info_t
+{
+	int offset;
+	float negate;
+	float kernel [4];
+} pixel_info_t;
+
+#if rescale_in > 1
+	#define PIXEL_OFFSET_( ntsc, scaled ) \
+		(kernel_size / 2 + ntsc + (scaled != 0) + (rescale_out - scaled) % rescale_out + \
+				(kernel_size * 2 * scaled))
+
+	#define PIXEL_OFFSET( ntsc, scaled ) \
+		PIXEL_OFFSET_( ((ntsc) - (scaled) / rescale_out * rescale_in),\
+				(((scaled) + rescale_out * 10) % rescale_out) ),\
+		(1.0f - (((ntsc) + 100) & 2))
+#else
+	#define PIXEL_OFFSET( ntsc, scaled ) \
+		(kernel_size / 2 + (ntsc) - (scaled)),\
+		(1.0f - (((ntsc) + 100) & 2))
+#endif
+
+extern pixel_info_t const snes_ntsc_pixels [alignment_count];
+
+/* Generate pixel at all burst phases and column alignments */
+static void gen_kernel( init_t* impl, float y, float i, float q, snes_ntsc_rgb_t* out )
+{
+	/* generate for each scanline burst phase */
+	float const* to_rgb = impl->to_rgb;
+	int burst_remain = burst_count;
+	y -= rgb_offset;
+	do
+	{
+		/* Encode yiq into *two* composite signals (to allow control over artifacting).
+		Convolve these with kernels which: filter respective components, apply
+		sharpening, and rescale horizontally. Convert resulting yiq to rgb and pack
+		into integer. Based on algorithm by NewRisingSun. */
+		pixel_info_t const* pixel = snes_ntsc_pixels;
+		int alignment_remain = alignment_count;
+		do
+		{
+			/* negate is -1 when composite starts at odd multiple of 2 */
+			float const yy = y * impl->fringing * pixel->negate;
+			float const ic0 = (i + yy) * pixel->kernel [0];
+			float const qc1 = (q + yy) * pixel->kernel [1];
+			float const ic2 = (i - yy) * pixel->kernel [2];
+			float const qc3 = (q - yy) * pixel->kernel [3];
+			
+			float const factor = impl->artifacts * pixel->negate;
+			float const ii = i * factor;
+			float const yc0 = (y + ii) * pixel->kernel [0];
+			float const yc2 = (y - ii) * pixel->kernel [2];
+			
+			float const qq = q * factor;
+			float const yc1 = (y + qq) * pixel->kernel [1];
+			float const yc3 = (y - qq) * pixel->kernel [3];
+			
+			float const* k = &impl->kernel [pixel->offset];
+			int n;
+			++pixel;
+			for ( n = rgb_kernel_size; n; --n )
+			{
+				float i = k[0]*ic0 + k[2]*ic2;
+				float q = k[1]*qc1 + k[3]*qc3;
+				float y = k[kernel_size+0]*yc0 + k[kernel_size+1]*yc1 +
+				          k[kernel_size+2]*yc2 + k[kernel_size+3]*yc3 + rgb_offset;
+				if ( rescale_out <= 1 )
+					k--;
+				else if ( k < &impl->kernel [kernel_size * 2 * (rescale_out - 1)] )
+					k += kernel_size * 2 - 1;
+				else
+					k -= kernel_size * 2 * (rescale_out - 1) + 2;
+				{
+					int r, g, b = YIQ_TO_RGB( y, i, q, to_rgb, int, r, g );
+					*out++ = PACK_RGB( r, g, b ) - rgb_bias;
+				}
+			}
+		}
+		while ( alignment_count > 1 && --alignment_remain );
+		
+		if ( burst_count <= 1 )
+			break;
+		
+		to_rgb += 6;
+		
+		ROTATE_IQ( i, q, -0.866025f, -0.5f ); /* -120 degrees */
+	}
+	while ( --burst_remain );
+}
+
+static void correct_errors( snes_ntsc_rgb_t color, snes_ntsc_rgb_t* out );
+
+#if DISABLE_CORRECTION
+	#define CORRECT_ERROR( a ) { out [i] += rgb_bias; }
+	#define DISTRIBUTE_ERROR( a, b, c ) { out [i] += rgb_bias; }
+#else
+	#define CORRECT_ERROR( a ) { out [a] += error; }
+	#define DISTRIBUTE_ERROR( a, b, c ) {\
+		snes_ntsc_rgb_t fourth = (error + 2 * snes_ntsc_rgb_builder) >> 2;\
+		fourth &= (rgb_bias >> 1) - snes_ntsc_rgb_builder;\
+		fourth -= rgb_bias >> 2;\
+		out [a] += fourth;\
+		out [b] += fourth;\
+		out [c] += fourth;\
+		out [i] += error - (fourth * 3);\
+	}
+#endif
+
+#define RGB_PALETTE_OUT( rgb, out_ )\
+{\
+	unsigned char* out = (out_);\
+	snes_ntsc_rgb_t clamped = (rgb);\
+	SNES_NTSC_CLAMP_( clamped, (8 - rgb_bits) );\
+	out [0] = (unsigned char) (clamped >> 21);\
+	out [1] = (unsigned char) (clamped >> 11);\
+	out [2] = (unsigned char) (clamped >>  1);\
+}
+
+/* blitter related */
+
+#ifndef restrict
+	#if defined (__GNUC__)
+		#define restrict __restrict__
+	#elif defined (_MSC_VER) && _MSC_VER > 1300
+		#define restrict __restrict
+	#else
+		/* no support for restricted pointers */
+		#define restrict
+	#endif
+#endif
+
+#include <limits.h>
+
+#if SNES_NTSC_OUT_DEPTH <= 16
+	#if USHRT_MAX == 0xFFFF
+		typedef unsigned short snes_ntsc_out_t;
+	#else
+		#error "Need 16-bit int type"
+	#endif
+
+#else
+	#if UINT_MAX == 0xFFFFFFFF
+		typedef unsigned int  snes_ntsc_out_t;
+	#elif ULONG_MAX == 0xFFFFFFFF
+		typedef unsigned long snes_ntsc_out_t;
+	#else
+		#error "Need 32-bit int type"
+	#endif
+
+#endif

snesfilter/pixellate2x/pixellate2x.cpp

@@ -0,0 +1,39 @@
+#include "pixellate2x.hpp"
+
+void Pixellate2xFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  outwidth  = (width  <= 256) ? width  * 2 : width;
+  outheight = (height <= 240) ? height * 2 : height;
+}
+
+void Pixellate2xFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  pitch >>= 1;
+  outpitch >>= 2;
+
+  uint32_t *out0 = output;
+  uint32_t *out1 = output + outpitch;
+
+  for(unsigned y = 0; y < height; y++) {
+    unsigned linewidth = line[y];
+    for(unsigned x = 0; x < linewidth; x++) {
+      uint32_t p = colortable[*input++];
+
+      *out0++ = p;
+      if(height <= 240) *out1++ = p;
+      if(linewidth > 256) continue;
+
+      *out0++ = p;
+      if(height <= 240) *out1++ = p;
+    }
+
+    input += pitch - linewidth;
+    if(height <= 240) {
+      out0 += outpitch + outpitch - 512;
+      out1 += outpitch + outpitch - 512;
+    } else {
+      out0 += outpitch - 512;
+    }
+  }
+}

snesfilter/pixellate2x/pixellate2x.hpp

@@ -0,0 +1,5 @@
+class Pixellate2xFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+} filter_pixellate2x;

snesfilter/scale2x/scale2x.cpp

@@ -0,0 +1,61 @@
+#include "scale2x.hpp"
+
+void Scale2xFilter::size(unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  if(height > 240) return filter_direct.size(outwidth, outheight, width, height);
+  outwidth  = (width  <= 256) ? width  * 2 : width;
+  outheight = (height <= 240) ? height * 2 : height;
+}
+
+void Scale2xFilter::render(
+  uint32_t *output, unsigned outpitch, const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  if(height > 240) {
+    filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    return;
+  }
+
+  pitch >>= 1;
+  outpitch >>= 2;
+
+  uint32_t *out0 = output;
+  uint32_t *out1 = output + outpitch;
+
+  for(unsigned y = 0; y < height; y++) {
+    unsigned linewidth = line[y];
+
+    if(linewidth == 256) {
+      int prevline = (y == 0) || (linewidth != line[y - 1]) ? 0 : pitch;
+      int nextline = (y == height - 1) || (linewidth != line[y + 1]) ? 0 : pitch;
+
+      for(unsigned x = 0; x < 256; x++) {
+        uint16_t A = *(input - prevline);
+        uint16_t B = (x >   0) ? *(input - 1) : *input;
+        uint16_t C = *input;
+        uint16_t D = (x < 255) ? *(input + 1) : *input;
+        uint16_t E = *(input++ + nextline);
+        uint32_t c = colortable[C];
+
+        if(A != E && B != D) {
+          *out0++ = (A == B ? colortable[A] : c);
+          *out0++ = (A == D ? colortable[A] : c);
+          *out1++ = (E == B ? colortable[E] : c);
+          *out1++ = (E == D ? colortable[E] : c);
+        } else {
+          *out0++ = c;
+          *out0++ = c;
+          *out1++ = c;
+          *out1++ = c;
+        }
+      }
+    } else {
+      for(unsigned x = 0; x < 512; x++) {
+        *out0++ = *out1++ = colortable[*input++];
+      }
+    }
+
+    input += pitch - linewidth;
+    out0 += outpitch + outpitch - 512;
+    out1 += outpitch + outpitch - 512;
+  }
+}

snesfilter/scale2x/scale2x.hpp

@@ -0,0 +1,5 @@
+class Scale2xFilter {
+public:
+  void size(unsigned&, unsigned&, unsigned, unsigned);
+  void render(uint32_t*, unsigned, const uint16_t*, unsigned, const unsigned*, unsigned, unsigned);
+} filter_scale2x;

snesfilter/snesfilter.cpp

@@ -0,0 +1,84 @@
+#include "snesfilter.hpp"
+
+#if defined(_WIN32)
+  #define dllexport __declspec(dllexport)
+#else
+  #define dllexport
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define QT_CORE_LIB
+#include <QtGui>
+
+#include <nall/config.hpp>
+#include <nall/platform.hpp>
+#include <nall/string.hpp>
+using namespace nall;
+
+const uint32_t *colortable;
+configuration *config;
+
+#include "direct/direct.cpp"
+#include "pixellate2x/pixellate2x.cpp"
+#include "scale2x/scale2x.cpp"
+#include "2xsai/2xsai.cpp"
+#include "lq2x/lq2x.cpp"
+#include "hq2x/hq2x.cpp"
+#include "ntsc/ntsc.cpp"
+
+dllexport const char* snesfilter_supported() {
+  return "Pixellate2x;Scale2x;2xSaI;Super 2xSaI;Super Eagle;LQ2x;HQ2x;NTSC";
+}
+
+dllexport void snesfilter_configuration(configuration &config_) {
+  config = &config_;
+  if(config) {
+    filter_ntsc.bind(*config);
+  }
+}
+
+dllexport void snesfilter_colortable(const uint32_t *colortable_) {
+  colortable = colortable_;
+}
+
+dllexport void snesfilter_size(unsigned filter, unsigned &outwidth, unsigned &outheight, unsigned width, unsigned height) {
+  switch(filter) {
+    default: return filter_direct.size(outwidth, outheight, width, height);
+    case 1:  return filter_pixellate2x.size(outwidth, outheight, width, height);
+    case 2:  return filter_scale2x.size(outwidth, outheight, width, height);
+    case 3:  return filter_2xsai.size(outwidth, outheight, width, height);
+    case 4:  return filter_super2xsai.size(outwidth, outheight, width, height);
+    case 5:  return filter_supereagle.size(outwidth, outheight, width, height);
+    case 6:  return filter_lq2x.size(outwidth, outheight, width, height);
+    case 7:  return filter_hq2x.size(outwidth, outheight, width, height);
+    case 8:  return filter_ntsc.size(outwidth, outheight, width, height);
+  }
+}
+
+dllexport void snesfilter_render(
+  unsigned filter, uint32_t *output, unsigned outpitch,
+  const uint16_t *input, unsigned pitch,
+  const unsigned *line, unsigned width, unsigned height
+) {
+  switch(filter) {
+    default: return filter_direct.render(output, outpitch, input, pitch, line, width, height);
+    case 1:  return filter_pixellate2x.render(output, outpitch, input, pitch, line, width, height);
+    case 2:  return filter_scale2x.render(output, outpitch, input, pitch, line, width, height);
+    case 3:  return filter_2xsai.render(output, outpitch, input, pitch, line, width, height);
+    case 4:  return filter_super2xsai.render(output, outpitch, input, pitch, line, width, height);
+    case 5:  return filter_supereagle.render(output, outpitch, input, pitch, line, width, height);
+    case 6:  return filter_lq2x.render(output, outpitch, input, pitch, line, width, height);
+    case 7:  return filter_hq2x.render(output, outpitch, input, pitch, line, width, height);
+    case 8:  return filter_ntsc.render(output, outpitch, input, pitch, line, width, height);
+  }
+}
+
+dllexport QWidget* snesfilter_settings(unsigned filter) {
+  switch(filter) {
+    default: return 0;
+    case 8:  return filter_ntsc.settings();
+  }
+}

snesfilter/snesfilter.hpp

@@ -0,0 +1,16 @@
+#include <stdint.h>
+class QWidget;
+namespace nall { class configuration; }
+
+extern "C" {
+  const char* snesfilter_supported();
+  void snesfilter_configuration(nall::configuration&);
+  void snesfilter_colortable(const uint32_t*);
+  void snesfilter_size(unsigned, unsigned&, unsigned&, unsigned, unsigned);
+  void snesfilter_render(
+    unsigned, uint32_t*, unsigned,
+    const uint16_t*, unsigned,
+    const unsigned*, unsigned, unsigned
+  );
+  QWidget* snesfilter_settings(unsigned);
+}

snesfilter/sync.sh

@@ -0,0 +1,2 @@
+rm -r nall
+cp -r ../nall ./nall

snesreader/7z_C/7zAlloc.c

@@ -0,0 +1,77 @@
+/* 7zAlloc.c -- Allocation functions
+2008-10-04 : Igor Pavlov : Public domain */
+
+#include <stdlib.h>
+#include "7zAlloc.h"
+
+/* #define _SZ_ALLOC_DEBUG */
+/* use _SZ_ALLOC_DEBUG to debug alloc/free operations */
+
+#ifdef _SZ_ALLOC_DEBUG
+
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
+#include <stdio.h>
+int g_allocCount = 0;
+int g_allocCountTemp = 0;
+
+#endif
+
+void *SzAlloc(void *p, size_t size)
+{
+  p = p;
+  if (size == 0)
+    return 0;
+  #ifdef _SZ_ALLOC_DEBUG
+  fprintf(stderr, "\nAlloc %10d bytes; count = %10d", size, g_allocCount);
+  g_allocCount++;
+  #endif
+  return malloc(size);
+}
+
+void SzFree(void *p, void *address)
+{
+  p = p;
+  #ifdef _SZ_ALLOC_DEBUG
+  if (address != 0)
+  {
+    g_allocCount--;
+    fprintf(stderr, "\nFree; count = %10d", g_allocCount);
+  }
+  #endif
+  free(address);
+}
+
+void *SzAllocTemp(void *p, size_t size)
+{
+  p = p;
+  if (size == 0)
+    return 0;
+  #ifdef _SZ_ALLOC_DEBUG
+  fprintf(stderr, "\nAlloc_temp %10d bytes;  count = %10d", size, g_allocCountTemp);
+  g_allocCountTemp++;
+  #ifdef _WIN32
+  return HeapAlloc(GetProcessHeap(), 0, size);
+  #endif
+  #endif
+  return malloc(size);
+}
+
+void SzFreeTemp(void *p, void *address)
+{
+  p = p;
+  #ifdef _SZ_ALLOC_DEBUG
+  if (address != 0)
+  {
+    g_allocCountTemp--;
+    fprintf(stderr, "\nFree_temp; count = %10d", g_allocCountTemp);
+  }
+  #ifdef _WIN32
+  HeapFree(GetProcessHeap(), 0, address);
+  return;
+  #endif
+  #endif
+  free(address);
+}

snesreader/7z_C/7zAlloc.h

@@ -0,0 +1,23 @@
+/* 7zAlloc.h -- Allocation functions
+2008-10-04 : Igor Pavlov : Public domain */
+
+#ifndef __7Z_ALLOC_H
+#define __7Z_ALLOC_H
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+	extern "C" {
+#endif
+
+void *SzAlloc(void *p, size_t size);
+void SzFree(void *p, void *address);
+
+void *SzAllocTemp(void *p, size_t size);
+void SzFreeTemp(void *p, void *address);
+
+#ifdef __cplusplus
+	}
+#endif
+
+#endif

snesreader/7z_C/7zBuf.c

@@ -0,0 +1,36 @@
+/* 7zBuf.c -- Byte Buffer
+2008-03-28
+Igor Pavlov
+Public domain */
+
+#include "7zBuf.h"
+
+void Buf_Init(CBuf *p)
+{
+  p->data = 0;
+  p->size = 0;
+}
+
+int Buf_Create(CBuf *p, size_t size, ISzAlloc *alloc)
+{
+  p->size = 0;
+  if (size == 0)
+  {
+    p->data = 0;
+    return 1;
+  }
+  p->data = (Byte *)alloc->Alloc(alloc, size);
+  if (p->data != 0)
+  {
+    p->size = size;
+    return 1;
+  }
+  return 0;
+}
+
+void Buf_Free(CBuf *p, ISzAlloc *alloc)
+{
+  alloc->Free(alloc, p->data);
+  p->data = 0;
+  p->size = 0;
+}

snesreader/7z_C/7zBuf.h

@@ -0,0 +1,31 @@
+/* 7zBuf.h -- Byte Buffer
+2008-10-04 : Igor Pavlov : Public domain */
+
+#ifndef __7Z_BUF_H
+#define __7Z_BUF_H
+
+#include "Types.h"
+
+typedef struct
+{
+  Byte *data;
+  size_t size;
+} CBuf;
+
+void Buf_Init(CBuf *p);
+int Buf_Create(CBuf *p, size_t size, ISzAlloc *alloc);
+void Buf_Free(CBuf *p, ISzAlloc *alloc);
+
+typedef struct
+{
+  Byte *data;
+  size_t size;
+  size_t pos;
+} CDynBuf;
+
+void DynBuf_Construct(CDynBuf *p);
+void DynBuf_SeekToBeg(CDynBuf *p);
+int DynBuf_Write(CDynBuf *p, const Byte *buf, size_t size, ISzAlloc *alloc);
+void DynBuf_Free(CDynBuf *p, ISzAlloc *alloc);
+
+#endif

snesreader/7z_C/7zC.txt

@@ -0,0 +1,194 @@
+7z ANSI-C Decoder 4.62
+----------------------
+
+7z ANSI-C provides 7z/LZMA decoding.
+7z ANSI-C version is simplified version ported from C++ code.
+
+LZMA is default and general compression method of 7z format
+in 7-Zip compression program (www.7-zip.org). LZMA provides high 
+compression ratio and very fast decompression.
+
+
+LICENSE
+-------
+
+7z ANSI-C Decoder is part of the LZMA SDK.
+LZMA SDK is written and placed in the public domain by Igor Pavlov.
+
+Files
+---------------------
+
+7zDecode.*   - Low level 7z decoding
+7zExtract.*  - High level 7z decoding
+7zHeader.*   - .7z format constants
+7zIn.*       - .7z archive opening
+7zItem.*     - .7z structures
+7zMain.c     - Test application
+
+
+How To Use
+----------
+
+You must download 7-Zip program from www.7-zip.org.
+
+You can create .7z archive with 7z.exe or 7za.exe:
+
+  7za.exe a archive.7z *.htm -r -mx -m0fb=255
+
+If you have big number of files in archive, and you need fast extracting, 
+you can use partly-solid archives:
+  
+  7za.exe a archive.7z *.htm -ms=512K -r -mx -m0fb=255 -m0d=512K
+
+In that example 7-Zip will use 512KB solid blocks. So it needs to decompress only 
+512KB for extracting one file from such archive.
+
+
+Limitations of current version of 7z ANSI-C Decoder
+---------------------------------------------------
+
+ - It reads only "FileName", "Size", "LastWriteTime" and "CRC" information for each file in archive.
+ - It supports only LZMA and Copy (no compression) methods with BCJ or BCJ2 filters.
+ - It converts original UTF-16 Unicode file names to UTF-8 Unicode file names.
+ 
+These limitations will be fixed in future versions.
+
+
+Using 7z ANSI-C Decoder Test application:
+-----------------------------------------
+
+Usage: 7zDec <command> <archive_name>
+
+<Command>:
+  e: Extract files from archive
+  l: List contents of archive
+  t: Test integrity of archive
+
+Example: 
+
+  7zDec l archive.7z
+
+lists contents of archive.7z
+
+  7zDec e archive.7z
+
+extracts files from archive.7z to current folder.
+
+
+How to use .7z Decoder
+----------------------
+
+Memory allocation
+~~~~~~~~~~~~~~~~~
+
+7z Decoder uses two memory pools:
+1) Temporary pool
+2) Main pool
+Such scheme can allow you to avoid fragmentation of allocated blocks.
+
+
+Steps for using 7z decoder
+--------------------------
+
+Use code at 7zMain.c as example.
+
+1) Declare variables:
+  inStream                 /* implements ILookInStream interface */
+  CSzArEx db;              /* 7z archive database structure */
+  ISzAlloc allocImp;       /* memory functions for main pool */
+  ISzAlloc allocTempImp;   /* memory functions for temporary pool */
+
+2) call CrcGenerateTable(); function to initialize CRC structures.
+
+3) call SzArEx_Init(&db); function to initialize db structures.
+
+4) call SzArEx_Open(&db, inStream, &allocMain, &allocTemp) to open archive
+
+This function opens archive "inStream" and reads headers to "db".
+All items in "db" will be allocated with "allocMain" functions.
+SzArEx_Open function allocates and frees temporary structures by "allocTemp" functions.
+
+5) List items or Extract items
+
+  Listing code:
+  ~~~~~~~~~~~~~
+    {
+      UInt32 i;
+      for (i = 0; i < db.db.NumFiles; i++)
+      {
+        CFileItem *f = db.db.Files + i;
+        printf("%10d  %s\n", (int)f->Size, f->Name);
+      }
+    }
+
+  Extracting code:
+  ~~~~~~~~~~~~~~~~
+
+  SZ_RESULT SzAr_Extract(
+    CArchiveDatabaseEx *db,
+    ILookInStream *inStream, 
+    UInt32 fileIndex,         /* index of file */
+    UInt32 *blockIndex,       /* index of solid block */
+    Byte **outBuffer,         /* pointer to pointer to output buffer (allocated with allocMain) */
+    size_t *outBufferSize,    /* buffer size for output buffer */
+    size_t *offset,           /* offset of stream for required file in *outBuffer */
+    size_t *outSizeProcessed, /* size of file in *outBuffer */
+    ISzAlloc *allocMain,
+    ISzAlloc *allocTemp);
+
+  If you need to decompress more than one file, you can send these values from previous call:
+    blockIndex, 
+    outBuffer, 
+    outBufferSize,
+  You can consider "outBuffer" as cache of solid block. If your archive is solid, 
+  it will increase decompression speed.
+
+  After decompressing you must free "outBuffer":
+  allocImp.Free(outBuffer);
+
+6) call SzArEx_Free(&db, allocImp.Free) to free allocated items in "db".
+
+
+
+
+Memory requirements for .7z decoding 
+------------------------------------
+
+Memory usage for Archive opening:
+  - Temporary pool:
+     - Memory for uncompressed .7z headers
+     - some other temporary blocks
+  - Main pool:
+     - Memory for database: 
+       Estimated size of one file structures in solid archive:
+         - Size (4 or 8 Bytes)
+         - CRC32 (4 bytes)
+         - LastWriteTime (8 bytes)
+         - Some file information (4 bytes)
+         - File Name (variable length) + pointer + allocation structures
+
+Memory usage for archive Decompressing:
+  - Temporary pool:
+     - Memory for LZMA decompressing structures
+  - Main pool:
+     - Memory for decompressed solid block
+     - Memory for temprorary buffers, if BCJ2 fileter is used. Usually these 
+       temprorary buffers can be about 15% of solid block size. 
+  
+
+7z Decoder doesn't allocate memory for compressed blocks. 
+Instead of this, you must allocate buffer with desired 
+size before calling 7z Decoder. Use 7zMain.c as example.
+
+
+Defines
+-------
+
+_SZ_ALLOC_DEBUG   - define it if you want to debug alloc/free operations to stderr.
+
+
+---
+
+http://www.7-zip.org
+http://www.7-zip.org/sdk.html
+http://www.7-zip.org/support.html

snesreader/7z_C/7zCrc.c

@@ -0,0 +1,35 @@
+/* 7zCrc.c -- CRC32 calculation
+2008-08-05
+Igor Pavlov
+Public domain */
+
+#include "7zCrc.h"
+
+#define kCrcPoly 0xEDB88320
+UInt32 g_CrcTable[256];
+
+void MY_FAST_CALL CrcGenerateTable(void)
+{
+  UInt32 i;
+  for (i = 0; i < 256; i++)
+  {
+    UInt32 r = i;
+    int j;
+    for (j = 0; j < 8; j++)
+      r = (r >> 1) ^ (kCrcPoly & ~((r & 1) - 1));
+    g_CrcTable[i] = r;
+  }
+}
+
+UInt32 MY_FAST_CALL CrcUpdate(UInt32 v, const void *data, size_t size)
+{
+  const Byte *p = (const Byte *)data;
+  for (; size > 0 ; size--, p++)
+    v = CRC_UPDATE_BYTE(v, *p);
+  return v;
+}
+
+UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size)
+{
+  return CrcUpdate(CRC_INIT_VAL, data, size) ^ 0xFFFFFFFF;
+}

snesreader/7z_C/7zCrc.h

@@ -0,0 +1,32 @@
+/* 7zCrc.h -- CRC32 calculation
+2008-03-13
+Igor Pavlov
+Public domain */
+
+#ifndef __7Z_CRC_H
+#define __7Z_CRC_H
+
+#include <stddef.h>
+
+#include "Types.h"
+
+#ifdef __cplusplus
+	extern "C" {
+#endif
+
+extern UInt32 g_CrcTable[];
+
+void MY_FAST_CALL CrcGenerateTable(void);
+
+#define CRC_INIT_VAL 0xFFFFFFFF
+#define CRC_GET_DIGEST(crc) ((crc) ^ 0xFFFFFFFF)
+#define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
+
+UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);
+UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);
+
+#ifdef __cplusplus
+	}
+#endif
+
+#endif

snesreader/7z_C/7zDecode.c

@@ -0,0 +1,257 @@
+/* 7zDecode.c -- Decoding from 7z folder
+2008-11-23 : Igor Pavlov : Public domain */
+
+#include <string.h>
+
+#include "Bcj2.h"
+#include "Bra.h"
+#include "LzmaDec.h"
+#include "7zDecode.h"
+
+#define k_Copy 0
+#define k_LZMA 0x30101
+#define k_BCJ 0x03030103
+#define k_BCJ2 0x0303011B
+
+static SRes SzDecodeLzma(CSzCoderInfo *coder, UInt64 inSize, ILookInStream *inStream,
+    Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain)
+{
+  CLzmaDec state;
+  SRes res = SZ_OK;
+
+  LzmaDec_Construct(&state);
+  RINOK(LzmaDec_AllocateProbs(&state, coder->Props.data, (unsigned)coder->Props.size, allocMain));
+  state.dic = outBuffer;
+  state.dicBufSize = outSize;
+  LzmaDec_Init(&state);
+
+  for (;;)
+  {
+    Byte *inBuf = NULL;
+    size_t lookahead = (1 << 18);
+    if (lookahead > inSize)
+      lookahead = (size_t)inSize;
+    res = inStream->Look((void *)inStream, (void **)&inBuf, &lookahead);
+    if (res != SZ_OK)
+      break;
+
+    {
+      SizeT inProcessed = (SizeT)lookahead, dicPos = state.dicPos;
+      ELzmaStatus status;
+      res = LzmaDec_DecodeToDic(&state, outSize, inBuf, &inProcessed, LZMA_FINISH_END, &status);
+      lookahead -= inProcessed;
+      inSize -= inProcessed;
+      if (res != SZ_OK)
+        break;
+      if (state.dicPos == state.dicBufSize || (inProcessed == 0 && dicPos == state.dicPos))
+      {
+        if (state.dicBufSize != outSize || lookahead != 0 ||
+            (status != LZMA_STATUS_FINISHED_WITH_MARK &&
+             status != LZMA_STATUS_MAYBE_FINISHED_WITHOUT_MARK))
+          res = SZ_ERROR_DATA;
+        break;
+      }
+      res = inStream->Skip((void *)inStream, inProcessed);
+      if (res != SZ_OK)
+        break;
+    }
+  }
+
+  LzmaDec_FreeProbs(&state, allocMain);
+  return res;
+}
+
+static SRes SzDecodeCopy(UInt64 inSize, ILookInStream *inStream, Byte *outBuffer)
+{
+  while (inSize > 0)
+  {
+    void *inBuf;
+    size_t curSize = (1 << 18);
+    if (curSize > inSize)
+      curSize = (size_t)inSize;
+    RINOK(inStream->Look((void *)inStream, (void **)&inBuf, &curSize));
+    if (curSize == 0)
+      return SZ_ERROR_INPUT_EOF;
+    memcpy(outBuffer, inBuf, curSize);
+    outBuffer += curSize;
+    inSize -= curSize;
+    RINOK(inStream->Skip((void *)inStream, curSize));
+  }
+  return SZ_OK;
+}
+
+#define IS_UNSUPPORTED_METHOD(m) ((m) != k_Copy && (m) != k_LZMA)
+#define IS_UNSUPPORTED_CODER(c) (IS_UNSUPPORTED_METHOD(c.MethodID) || c.NumInStreams != 1 || c.NumOutStreams != 1)
+#define IS_NO_BCJ(c) (c.MethodID != k_BCJ || c.NumInStreams != 1 || c.NumOutStreams != 1)
+#define IS_NO_BCJ2(c) (c.MethodID != k_BCJ2 || c.NumInStreams != 4 || c.NumOutStreams != 1)
+
+static
+SRes CheckSupportedFolder(const CSzFolder *f)
+{
+  if (f->NumCoders < 1 || f->NumCoders > 4)
+    return SZ_ERROR_UNSUPPORTED;
+  if (IS_UNSUPPORTED_CODER(f->Coders[0]))
+    return SZ_ERROR_UNSUPPORTED;
+  if (f->NumCoders == 1)
+  {
+    if (f->NumPackStreams != 1 || f->PackStreams[0] != 0 || f->NumBindPairs != 0)
+      return SZ_ERROR_UNSUPPORTED;
+    return SZ_OK;
+  }
+  if (f->NumCoders == 2)
+  {
+    if (IS_NO_BCJ(f->Coders[1]) ||
+        f->NumPackStreams != 1 || f->PackStreams[0] != 0 ||
+        f->NumBindPairs != 1 ||
+        f->BindPairs[0].InIndex != 1 || f->BindPairs[0].OutIndex != 0)
+      return SZ_ERROR_UNSUPPORTED;
+    return SZ_OK;
+  }
+  if (f->NumCoders == 4)
+  {
+    if (IS_UNSUPPORTED_CODER(f->Coders[1]) ||
+        IS_UNSUPPORTED_CODER(f->Coders[2]) ||
+        IS_NO_BCJ2(f->Coders[3]))
+      return SZ_ERROR_UNSUPPORTED;
+    if (f->NumPackStreams != 4 ||
+        f->PackStreams[0] != 2 ||
+        f->PackStreams[1] != 6 ||
+        f->PackStreams[2] != 1 ||
+        f->PackStreams[3] != 0 ||
+        f->NumBindPairs != 3 ||
+        f->BindPairs[0].InIndex != 5 || f->BindPairs[0].OutIndex != 0 ||
+        f->BindPairs[1].InIndex != 4 || f->BindPairs[1].OutIndex != 1 ||
+        f->BindPairs[2].InIndex != 3 || f->BindPairs[2].OutIndex != 2)
+      return SZ_ERROR_UNSUPPORTED;
+    return SZ_OK;
+  }
+  return SZ_ERROR_UNSUPPORTED;
+}
+
+static
+UInt64 GetSum(const UInt64 *values, UInt32 index)
+{
+  UInt64 sum = 0;
+  UInt32 i;
+  for (i = 0; i < index; i++)
+    sum += values[i];
+  return sum;
+}
+
+static
+SRes SzDecode2(const UInt64 *packSizes, const CSzFolder *folder,
+    ILookInStream *inStream, UInt64 startPos,
+    Byte *outBuffer, SizeT outSize, ISzAlloc *allocMain,
+    Byte *tempBuf[])
+{
+  UInt32 ci;
+  SizeT tempSizes[3] = { 0, 0, 0};
+  SizeT tempSize3 = 0;
+  Byte *tempBuf3 = 0;
+
+  RINOK(CheckSupportedFolder(folder));
+
+  for (ci = 0; ci < folder->NumCoders; ci++)
+  {
+    CSzCoderInfo *coder = &folder->Coders[ci];
+
+    if (coder->MethodID == k_Copy || coder->MethodID == k_LZMA)
+    {
+      UInt32 si = 0;
+      UInt64 offset;
+      UInt64 inSize;
+      Byte *outBufCur = outBuffer;
+      SizeT outSizeCur = outSize;
+      if (folder->NumCoders == 4)
+      {
+        UInt32 indices[] = { 3, 2, 0 };
+        UInt64 unpackSize = folder->UnpackSizes[ci];
+        si = indices[ci];
+        if (ci < 2)
+        {
+          Byte *temp;
+          outSizeCur = (SizeT)unpackSize;
+          if (outSizeCur != unpackSize)
+            return SZ_ERROR_MEM;
+          temp = (Byte *)IAlloc_Alloc(allocMain, outSizeCur);
+          if (temp == 0 && outSizeCur != 0)
+            return SZ_ERROR_MEM;
+          outBufCur = tempBuf[1 - ci] = temp;
+          tempSizes[1 - ci] = outSizeCur;
+        }
+        else if (ci == 2)
+        {
+          if (unpackSize > outSize) /* check it */
+            return SZ_ERROR_PARAM;
+          tempBuf3 = outBufCur = outBuffer + (outSize - (size_t)unpackSize);
+          tempSize3 = outSizeCur = (SizeT)unpackSize;
+        }
+        else
+          return SZ_ERROR_UNSUPPORTED;
+      }
+      offset = GetSum(packSizes, si);
+      inSize = packSizes[si];
+      RINOK(LookInStream_SeekTo(inStream, startPos + offset));
+
+      if (coder->MethodID == k_Copy)
+      {
+        if (inSize != outSizeCur) /* check it */
+          return SZ_ERROR_DATA;
+        RINOK(SzDecodeCopy(inSize, inStream, outBufCur));
+      }
+      else
+      {
+        RINOK(SzDecodeLzma(coder, inSize, inStream, outBufCur, outSizeCur, allocMain));
+      }
+    }
+    else if (coder->MethodID == k_BCJ)
+    {
+      UInt32 state;
+      if (ci != 1)
+        return SZ_ERROR_UNSUPPORTED;
+      x86_Convert_Init(state);
+      x86_Convert(outBuffer, outSize, 0, &state, 0);
+    }
+    else if (coder->MethodID == k_BCJ2)
+    {
+      UInt64 offset = GetSum(packSizes, 1);
+      UInt64 s3Size = packSizes[1];
+      SRes res;
+      if (ci != 3)
+        return SZ_ERROR_UNSUPPORTED;
+      RINOK(LookInStream_SeekTo(inStream, startPos + offset));
+      tempSizes[2] = (SizeT)s3Size;
+      if (tempSizes[2] != s3Size)
+        return SZ_ERROR_MEM;
+      tempBuf[2] = (Byte *)IAlloc_Alloc(allocMain, tempSizes[2]);
+      if (tempBuf[2] == 0 && tempSizes[2] != 0)
+        return SZ_ERROR_MEM;
+      res = SzDecodeCopy(s3Size, inStream, tempBuf[2]);
+      RINOK(res)
+
+      res = Bcj2_Decode(
+          tempBuf3, tempSize3,
+          tempBuf[0], tempSizes[0],
+          tempBuf[1], tempSizes[1],
+          tempBuf[2], tempSizes[2],
+          outBuffer, outSize);
+      RINOK(res)
+    }
+    else
+      return SZ_ERROR_UNSUPPORTED;
+  }
+  return SZ_OK;
+}
+
+SRes SzDecode(const UInt64 *packSizes, const CSzFolder *folder,
+    ILookInStream *inStream, UInt64 startPos,
+    Byte *outBuffer, size_t outSize, ISzAlloc *allocMain)
+{
+  Byte *tempBuf[3] = { 0, 0, 0};
+  int i;
+  SRes res = SzDecode2(packSizes, folder, inStream, startPos,
+      outBuffer, (SizeT)outSize, allocMain, tempBuf);
+  for (i = 0; i < 3; i++)
+    IAlloc_Free(allocMain, tempBuf[i]);
+  return res;
+}