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D:\Projects\VisualBoy Advance-M-1.8.0 source\src\Util.cpp


git-svn-id: https://svn.code.sf.net/p/vbam/code/trunk@426 a31d4220-a93d-0410-bf67-fe4944624d44
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squall_leonhart69r 2008-02-29 04:00:46 +00:00
parent 5b49a34550
commit 6d43e6061e
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// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
// Copyright (C) 1999-2003 Forgotten
// Copyright (C) 2004-2006 Forgotten and the VBA development team
// Copyright (C) 2007-2008 VBA-M development team and Shay Green
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or(at your option)
// any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <zlib.h>
extern "C" {
#include <png.h>
}
#include "System.h"
#include "NLS.h"
#include "Util.h"
#include "Flash.h"
#include "agb/GBA.h"
#include "Globals.h"
#include "RTC.h"
#include "Port.h"
#include "fex.h"
extern "C" {
#include "memgzio.h"
}
#ifndef _MSC_VER
#define _stricmp strcasecmp
#endif // ! _MSC_VER
extern int systemColorDepth;
extern int systemRedShift;
extern int systemGreenShift;
extern int systemBlueShift;
extern u16 systemColorMap16[0x10000];
extern u32 systemColorMap32[0x10000];
static int (ZEXPORT *utilGzWriteFunc)(gzFile, const voidp, unsigned int) = NULL;
static int (ZEXPORT *utilGzReadFunc)(gzFile, voidp, unsigned int) = NULL;
static int (ZEXPORT *utilGzCloseFunc)(gzFile) = NULL;
bool utilWritePNGFile(const char *fileName, int w, int h, u8 *pix)
{
u8 writeBuffer[512 * 3];
FILE *fp = fopen(fileName,"wb");
if(!fp) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), fileName);
return false;
}
png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
NULL,
NULL,
NULL);
if(!png_ptr) {
fclose(fp);
return false;
}
png_infop info_ptr = png_create_info_struct(png_ptr);
if(!info_ptr) {
png_destroy_write_struct(&png_ptr,NULL);
fclose(fp);
return false;
}
if(setjmp(png_ptr->jmpbuf)) {
png_destroy_write_struct(&png_ptr,NULL);
fclose(fp);
return false;
}
png_init_io(png_ptr,fp);
png_set_IHDR(png_ptr,
info_ptr,
w,
h,
8,
PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
png_write_info(png_ptr,info_ptr);
u8 *b = writeBuffer;
int sizeX = w;
int sizeY = h;
switch(systemColorDepth) {
case 16:
{
u16 *p = (u16 *)(pix+(w+2)*2); // skip first black line
for(int y = 0; y < sizeY; y++) {
for(int x = 0; x < sizeX; x++) {
u16 v = *p++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
png_write_row(png_ptr,writeBuffer);
b = writeBuffer;
}
}
break;
case 24:
{
u8 *pixU8 = (u8 *)pix;
for(int y = 0; y < sizeY; y++) {
for(int x = 0; x < sizeX; x++) {
if(systemRedShift < systemBlueShift) {
*b++ = *pixU8++; // R
*b++ = *pixU8++; // G
*b++ = *pixU8++; // B
} else {
int blue = *pixU8++;
int green = *pixU8++;
int red = *pixU8++;
*b++ = red;
*b++ = green;
*b++ = blue;
}
}
png_write_row(png_ptr,writeBuffer);
b = writeBuffer;
}
}
break;
case 32:
{
u32 *pixU32 = (u32 *)(pix+4*(w+1));
for(int y = 0; y < sizeY; y++) {
for(int x = 0; x < sizeX; x++) {
u32 v = *pixU32++;
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
}
pixU32++;
png_write_row(png_ptr,writeBuffer);
b = writeBuffer;
}
}
break;
}
png_write_end(png_ptr, info_ptr);
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(fp);
return true;
}
void utilPutDword(u8 *p, u32 value)
{
*p++ = value & 255;
*p++ = (value >> 8) & 255;
*p++ = (value >> 16) & 255;
*p = (value >> 24) & 255;
}
void utilPutWord(u8 *p, u16 value)
{
*p++ = value & 255;
*p = (value >> 8) & 255;
}
bool utilWriteBMPFile(const char *fileName, int w, int h, u8 *pix)
{
u8 writeBuffer[512 * 3];
FILE *fp = fopen(fileName,"wb");
if(!fp) {
systemMessage(MSG_ERROR_CREATING_FILE, N_("Error creating file %s"), fileName);
return false;
}
struct {
u8 ident[2];
u8 filesize[4];
u8 reserved[4];
u8 dataoffset[4];
u8 headersize[4];
u8 width[4];
u8 height[4];
u8 planes[2];
u8 bitsperpixel[2];
u8 compression[4];
u8 datasize[4];
u8 hres[4];
u8 vres[4];
u8 colors[4];
u8 importantcolors[4];
// u8 pad[2];
} bmpheader;
memset(&bmpheader, 0, sizeof(bmpheader));
bmpheader.ident[0] = 'B';
bmpheader.ident[1] = 'M';
u32 fsz = sizeof(bmpheader) + w*h*3;
utilPutDword(bmpheader.filesize, fsz);
utilPutDword(bmpheader.dataoffset, 0x36);
utilPutDword(bmpheader.headersize, 0x28);
utilPutDword(bmpheader.width, w);
utilPutDword(bmpheader.height, h);
utilPutDword(bmpheader.planes, 1);
utilPutDword(bmpheader.bitsperpixel, 24);
utilPutDword(bmpheader.datasize, 3*w*h);
fwrite(&bmpheader, 1, sizeof(bmpheader), fp);
u8 *b = writeBuffer;
int sizeX = w;
int sizeY = h;
switch(systemColorDepth) {
case 16:
{
u16 *p = (u16 *)(pix+(w+2)*(h)*2); // skip first black line
for(int y = 0; y < sizeY; y++) {
for(int x = 0; x < sizeX; x++) {
u16 v = *p++;
*b++ = ((v >> systemBlueShift) & 0x01f) << 3; // B
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
}
p++; // skip black pixel for filters
p++; // skip black pixel for filters
p -= 2*(w+2);
fwrite(writeBuffer, 1, 3*w, fp);
b = writeBuffer;
}
}
break;
case 24:
{
u8 *pixU8 = (u8 *)pix+3*w*(h-1);
for(int y = 0; y < sizeY; y++) {
for(int x = 0; x < sizeX; x++) {
if(systemRedShift > systemBlueShift) {
*b++ = *pixU8++; // B
*b++ = *pixU8++; // G
*b++ = *pixU8++; // R
} else {
int red = *pixU8++;
int green = *pixU8++;
int blue = *pixU8++;
*b++ = blue;
*b++ = green;
*b++ = red;
}
}
pixU8 -= 2*3*w;
fwrite(writeBuffer, 1, 3*w, fp);
b = writeBuffer;
}
}
break;
case 32:
{
u32 *pixU32 = (u32 *)(pix+4*(w+1)*(h));
for(int y = 0; y < sizeY; y++) {
for(int x = 0; x < sizeX; x++) {
u32 v = *pixU32++;
*b++ = ((v >> systemBlueShift) & 0x001f) << 3; // B
*b++ = ((v >> systemGreenShift) & 0x001f) << 3; // G
*b++ = ((v >> systemRedShift) & 0x001f) << 3; // R
}
pixU32++;
pixU32 -= 2*(w+1);
fwrite(writeBuffer, 1, 3*w, fp);
b = writeBuffer;
}
}
break;
}
fclose(fp);
return true;
}
static int utilReadInt2(FILE *f)
{
int res = 0;
int c = fgetc(f);
if(c == EOF)
return -1;
res = c;
c = fgetc(f);
if(c == EOF)
return -1;
return c + (res<<8);
}
static int utilReadInt3(FILE *f)
{
int res = 0;
int c = fgetc(f);
if(c == EOF)
return -1;
res = c;
c = fgetc(f);
if(c == EOF)
return -1;
res = c + (res<<8);
c = fgetc(f);
if(c == EOF)
return -1;
return c + (res<<8);
}
void utilApplyIPS(const char *ips, u8 **r, int *s)
{
// from the IPS spec at http://zerosoft.zophar.net/ips.htm
FILE *f = fopen(ips, "rb");
if(!f)
return;
u8 *rom = *r;
int size = *s;
if(fgetc(f) == 'P' &&
fgetc(f) == 'A' &&
fgetc(f) == 'T' &&
fgetc(f) == 'C' &&
fgetc(f) == 'H') {
int b;
int offset;
int len;
for(;;) {
// read offset
offset = utilReadInt3(f);
// if offset == EOF, end of patch
if(offset == 0x454f46)
break;
// read length
len = utilReadInt2(f);
if(!len) {
// len == 0, RLE block
len = utilReadInt2(f);
// byte to fill
int c = fgetc(f);
if(c == -1)
break;
b = (u8)c;
} else
b= -1;
// check if we need to reallocate our ROM
if((offset + len) >= size) {
size *= 2;
rom = (u8 *)realloc(rom, size);
*r = rom;
*s = size;
}
if(b == -1) {
// normal block, just read the data
if(fread(&rom[offset], 1, len, f) != (size_t)len)
break;
} else {
// fill the region with the given byte
while(len--) {
rom[offset++] = b;
}
}
}
}
// close the file
fclose(f);
}
extern bool cpuIsMultiBoot;
bool utilIsGBAImage(const char * file)
{
cpuIsMultiBoot = false;
if(strlen(file) > 4) {
const char * p = strrchr(file,'.');
if(p != NULL) {
if(_stricmp(p, ".gba") == 0)
return true;
if(_stricmp(p, ".agb") == 0)
return true;
if(_stricmp(p, ".bin") == 0)
return true;
if(_stricmp(p, ".elf") == 0)
return true;
if(_stricmp(p, ".mb") == 0) {
cpuIsMultiBoot = true;
return true;
}
}
}
return false;
}
bool utilIsGBImage(const char * file)
{
if(strlen(file) > 4) {
const char * p = strrchr(file,'.');
if(p != NULL) {
if(_stricmp(p, ".gb") == 0)
return true;
if(_stricmp(p, ".gbc") == 0)
return true;
if(_stricmp(p, ".cgb") == 0)
return true;
if(_stricmp(p, ".sgb") == 0)
return true;
}
}
return false;
}
bool utilIsGzipFile(const char *file)
{
if(strlen(file) > 3) {
const char * p = strrchr(file,'.');
if(p != NULL) {
if(_stricmp(p, ".gz") == 0)
return true;
if(_stricmp(p, ".z") == 0)
return true;
}
}
return false;
}
// strip .gz or .z off end
void utilStripDoubleExtension(const char *file, char *buffer)
{
if(buffer != file) // allows conversion in place
strcpy(buffer, file);
if(utilIsGzipFile(file)) {
char *p = strrchr(buffer, '.');
if(p)
*p = 0;
}
}
// Opens and scans archive using accept(). Returns File_Extractor if found.
// If error or not found, displays message and returns NULL.
static File_Extractor* scan_arc(const char *file, bool (*accept)(const char *),
char (&buffer) [2048] )
{
fex_err_t err;
File_Extractor* fe = fex_open( file, &err );
if(!fe)
{
systemMessage(MSG_CANNOT_OPEN_FILE, N_("Cannot open file %s: %s"), file, err);
return NULL;
}
// Scan filenames
bool found=false;
while(!fex_done(fe)) {
strncpy(buffer,fex_name(fe),sizeof buffer);
buffer [sizeof buffer-1] = '\0';
utilStripDoubleExtension(buffer, buffer);
if(accept(buffer)) {
found = true;
break;
}
fex_err_t err = fex_next(fe);
if(err) {
systemMessage(MSG_BAD_ZIP_FILE, N_("Cannot read archive %s: %s"), file, err);
fex_close(fe);
return NULL;
}
}
if(!found) {
systemMessage(MSG_NO_IMAGE_ON_ZIP,
N_("No image found in file %s"), file);
fex_close(fe);
return NULL;
}
return fe;
}
static bool utilIsImage(const char *file)
{
return utilIsGBAImage(file) || utilIsGBImage(file);
}
IMAGE_TYPE utilFindType(const char *file)
{
char buffer [2048];
if ( !utilIsImage( file ) ) // TODO: utilIsArchive() instead?
{
File_Extractor* fe = scan_arc(file,utilIsImage,buffer);
if(!fe)
return IMAGE_UNKNOWN;
fex_close(fe);
file = buffer;
}
return utilIsGBAImage(file) ? IMAGE_GBA : IMAGE_GB;
}
static int utilGetSize(int size)
{
int res = 1;
while(res < size)
res <<= 1;
return res;
}
u8 *utilLoad(const char *file,
bool (*accept)(const char *),
u8 *data,
int &size)
{
// find image file
char buffer [2048];
File_Extractor *fe = scan_arc(file,accept,buffer);
if(!fe)
return NULL;
// Allocate space for image
int fileSize = fex_size(fe);
if(size == 0)
size = fileSize;
u8 *image = data;
if(image == NULL) {
// allocate buffer memory if none was passed to the function
image = (u8 *)malloc(utilGetSize(size));
if(image == NULL) {
fex_close(fe);
systemMessage(MSG_OUT_OF_MEMORY, N_("Failed to allocate memory for %s"),
"data");
return NULL;
}
size = fileSize;
}
// Read image
int read = fileSize <= size ? fileSize : size; // do not read beyond file
fex_err_t err = fex_read_once(fe, image, read);
fex_close(fe);
if(err) {
systemMessage(MSG_ERROR_READING_IMAGE,
N_("Error reading image from %s: %s"), buffer, err);
if(data == NULL)
free(image);
return NULL;
}
size = fileSize;
return image;
}
void utilWriteInt(gzFile gzFile, int i)
{
utilGzWrite(gzFile, &i, sizeof(int));
}
int utilReadInt(gzFile gzFile)
{
int i = 0;
utilGzRead(gzFile, &i, sizeof(int));
return i;
}
void utilReadData(gzFile gzFile, variable_desc* data)
{
while(data->address) {
utilGzRead(gzFile, data->address, data->size);
data++;
}
}
void utilWriteData(gzFile gzFile, variable_desc *data)
{
while(data->address) {
utilGzWrite(gzFile, data->address, data->size);
data++;
}
}
gzFile utilGzOpen(const char *file, const char *mode)
{
utilGzWriteFunc = (int (ZEXPORT *)(void *,void * const, unsigned int))gzwrite;
utilGzReadFunc = gzread;
utilGzCloseFunc = gzclose;
return gzopen(file, mode);
}
gzFile utilMemGzOpen(char *memory, int available, const char *mode)
{
utilGzWriteFunc = memgzwrite;
utilGzReadFunc = memgzread;
utilGzCloseFunc = memgzclose;
return memgzopen(memory, available, mode);
}
int utilGzWrite(gzFile file, const voidp buffer, unsigned int len)
{
return utilGzWriteFunc(file, buffer, len);
}
int utilGzRead(gzFile file, voidp buffer, unsigned int len)
{
return utilGzReadFunc(file, buffer, len);
}
int utilGzClose(gzFile file)
{
return utilGzCloseFunc(file);
}
long utilGzMemTell(gzFile file)
{
return memtell(file);
}
void utilGBAFindSave(const u8 *data, const int size)
{
u32 *p = (u32 *)data;
u32 *end = (u32 *)(data + size);
int saveType = 0;
int flashSize = 0x10000;
bool rtcFound = false;
while(p < end) {
u32 d = READ32LE(p);
if(d == 0x52504545) {
if(memcmp(p, "EEPROM_", 7) == 0) {
if(saveType == 0)
saveType = 3;
}
} else if (d == 0x4D415253) {
if(memcmp(p, "SRAM_", 5) == 0) {
if(saveType == 0)
saveType = 1;
}
} else if (d == 0x53414C46) {
if(memcmp(p, "FLASH1M_", 8) == 0) {
if(saveType == 0) {
saveType = 2;
flashSize = 0x20000;
}
} else if(memcmp(p, "FLASH", 5) == 0) {
if(saveType == 0) {
saveType = 2;
flashSize = 0x10000;
}
}
} else if (d == 0x52494953) {
if(memcmp(p, "SIIRTC_V", 8) == 0)
rtcFound = true;
}
p++;
}
// if no matches found, then set it to NONE
if(saveType == 0) {
saveType = 5;
}
rtcEnable(rtcFound);
cpuSaveType = saveType;
flashSetSize(flashSize);
}
void utilUpdateSystemColorMaps()
{
switch(systemColorDepth) {
case 16:
{
for(int i = 0; i < 0x10000; i++) {
systemColorMap16[i] = ((i & 0x1f) << systemRedShift) |
(((i & 0x3e0) >> 5) << systemGreenShift) |
(((i & 0x7c00) >> 10) << systemBlueShift);
}
}
break;
case 24:
case 32:
{
for(int i = 0; i < 0x10000; i++) {
systemColorMap32[i] = ((i & 0x1f) << systemRedShift) |
(((i & 0x3e0) >> 5) << systemGreenShift) |
(((i & 0x7c00) >> 10) << systemBlueShift);
}
}
break;
}
}