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fceux/src/drivers/sdl/sdl-video.cpp

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/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2002 Xodnizel
*
* 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 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/// \file
/// \brief Handles the graphical game display for the SDL implementation.
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "sdl.h"
#include "sdl-opengl.h"
#include "../common/vidblit.h"
#include "../../fceu.h"
#include "../../version.h"
#include "../../video.h"
#include "../../utils/memory.h"
#include "sdl-icon.h"
#include "dface.h"
#include "../common/configSys.h"
#include "sdl-video.h"
#ifdef CREATE_AVI
#include "../videolog/nesvideos-piece.h"
#endif
#ifdef _GTK
#include "gui.h"
#include <gdk/gdkx.h>
#endif
// GLOBALS
extern Config *g_config;
// STATIC GLOBALS
extern SDL_Surface *s_screen;
static SDL_Surface *s_BlitBuf; // Buffer when using hardware-accelerated blits.
static SDL_Surface *s_IconSurface = NULL;
static int s_curbpp;
static int s_srendline, s_erendline;
static int s_tlines;
static int s_inited;
#ifdef OPENGL
static int s_useOpenGL;
#endif
static double s_exs, s_eys;
static int s_eefx;
static int s_clipSides;
static int s_fullscreen;
static int noframe;
static int s_nativeWidth = -1;
static int s_nativeHeight = -1;
#define NWIDTH (256 - (s_clipSides ? 16 : 0))
#define NOFFSET (s_clipSides ? 8 : 0)
static int s_paletterefresh;
extern bool MaxSpeed;
/**
* Attempts to destroy the graphical video display. Returns 0 on
* success, -1 on failure.
*/
//draw input aids if we are fullscreen
bool FCEUD_ShouldDrawInputAids()
{
return s_fullscreen!=0;
}
int
KillVideo()
{
// if the IconSurface has been initialized, destroy it
if(s_IconSurface) {
SDL_FreeSurface(s_IconSurface);
s_IconSurface=0;
}
// return failure if the video system was not initialized
if(s_inited == 0)
return -1;
// if the rest of the system has been initialized, shut it down
#ifdef OPENGL
// check for OpenGL and shut it down
if(s_useOpenGL)
KillOpenGL();
else
#endif
// shut down the system that converts from 8 to 16/32 bpp
if(s_curbpp > 8)
KillBlitToHigh();
// shut down the SDL video sub-system
SDL_QuitSubSystem(SDL_INIT_VIDEO);
s_inited = 0;
return 0;
}
// this variable contains information about the special scaling filters
static int s_sponge;
/**
* These functions determine an appropriate scale factor for fullscreen/
*/
inline double GetXScale(int xres)
{
return ((double)xres) / NWIDTH;
}
inline double GetYScale(int yres)
{
return ((double)yres) / s_tlines;
}
void FCEUD_VideoChanged()
{
int buf;
g_config->getOption("SDL.PAL", &buf);
if(buf)
PAL = 1;
else
PAL = 0;
}
/**
* Attempts to initialize the graphical video display. Returns 0 on
* success, -1 on failure.
*/
int
InitVideo(FCEUGI *gi)
{
// XXX soules - const? is this necessary?
const SDL_VideoInfo *vinf;
int error, flags = 0;
int doublebuf, xstretch, ystretch, xres, yres, show_fps;
FCEUI_printf("Initializing video...");
// load the relevant configuration variables
g_config->getOption("SDL.Fullscreen", &s_fullscreen);
g_config->getOption("SDL.DoubleBuffering", &doublebuf);
#ifdef OPENGL
g_config->getOption("SDL.OpenGL", &s_useOpenGL);
#endif
g_config->getOption("SDL.SpecialFilter", &s_sponge);
g_config->getOption("SDL.XStretch", &xstretch);
g_config->getOption("SDL.YStretch", &ystretch);
g_config->getOption("SDL.LastXRes", &xres);
g_config->getOption("SDL.LastYRes", &yres);
g_config->getOption("SDL.ClipSides", &s_clipSides);
g_config->getOption("SDL.NoFrame", &noframe);
g_config->getOption("SDL.ShowFPS", &show_fps);
// check the starting, ending, and total scan lines
FCEUI_GetCurrentVidSystem(&s_srendline, &s_erendline);
s_tlines = s_erendline - s_srendline + 1;
// check if we should auto-set x/y resolution
// check for OpenGL and set the global flags
#if OPENGL
if(s_useOpenGL && !s_sponge) {
flags = SDL_OPENGL;
}
#endif
// initialize the SDL video subsystem if it is not already active
if(!SDL_WasInit(SDL_INIT_VIDEO)) {
error = SDL_InitSubSystem(SDL_INIT_VIDEO);
if(error) {
FCEUD_PrintError(SDL_GetError());
return -1;
}
}
s_inited = 1;
// shows the cursor within the display window
SDL_ShowCursor(1);
// determine if we can allocate the display on the video card
vinf = SDL_GetVideoInfo();
if(vinf->hw_available) {
flags |= SDL_HWSURFACE;
}
// get the monitor's current resolution if we do not already have it
if(s_nativeWidth < 0) {
s_nativeWidth = vinf->current_w;
}
if(s_nativeHeight < 0) {
s_nativeHeight = vinf->current_h;
}
// check to see if we are showing FPS
FCEUI_SetShowFPS(show_fps);
// check if we are rendering fullscreen
if(s_fullscreen) {
int no_cursor;
g_config->getOption("SDL.NoFullscreenCursor", &no_cursor);
flags |= SDL_FULLSCREEN;
SDL_ShowCursor(!no_cursor);
}
else {
SDL_ShowCursor(1);
}
if(noframe) {
flags |= SDL_NOFRAME;
}
// gives the SDL exclusive palette control... ensures the requested colors
flags |= SDL_HWPALETTE;
// enable double buffering if requested and we have hardware support
#ifdef OPENGL
if(s_useOpenGL) {
FCEU_printf("Initializing with OpenGL (Disable with '--opengl 0').\n");
if(doublebuf) {
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
}
} else
#endif
if(doublebuf && (flags & SDL_HWSURFACE)) {
flags |= SDL_DOUBLEBUF;
}
if(s_fullscreen) {
int desbpp, autoscale;
g_config->getOption("SDL.BitsPerPixel", &desbpp);
g_config->getOption("SDL.AutoScale", &autoscale);
if (autoscale)
{
double auto_xscale = GetXScale(xres);
double auto_yscale = GetYScale(yres);
double native_ratio = ((double)NWIDTH) / s_tlines;
double screen_ratio = ((double)xres) / yres;
int keep_ratio;
g_config->getOption("SDL.KeepRatio", &keep_ratio);
// Try to choose resolution
if (screen_ratio < native_ratio)
{
// The screen is narrower than the original. Maximizing width will not clip
auto_xscale = auto_yscale = GetXScale(xres);
if (keep_ratio)
auto_yscale = GetYScale(yres);
}
else
{
auto_yscale = auto_xscale = GetYScale(yres);
if (keep_ratio)
auto_xscale = GetXScale(xres);
}
s_exs = auto_xscale;
s_eys = auto_yscale;
}
else
{
g_config->getOption("SDL.XScale", &s_exs);
g_config->getOption("SDL.YScale", &s_eys);
}
g_config->getOption("SDL.SpecialFX", &s_eefx);
#ifdef OPENGL
if(!s_useOpenGL) {
s_exs = (int)s_exs;
s_eys = (int)s_eys;
} else {
desbpp = 0;
}
// -Video Modes Tag-
if(s_sponge) {
if(s_sponge == 4 || s_sponge == 5) {
s_exs = s_eys = 3;
} else {
s_exs = s_eys = 2;
}
s_eefx = 0;
if(s_sponge == 1 || s_sponge == 4) {
desbpp = 32;
}
}
if((s_useOpenGL && !xstretch) || !s_useOpenGL)
#endif
if(xres < (NWIDTH * s_exs) || s_exs <= 0.01) {
FCEUD_PrintError("xscale out of bounds.");
KillVideo();
return -1;
}
#ifdef OPENGL
if((s_useOpenGL && !ystretch) || !s_useOpenGL)
#endif
if(yres < s_tlines * s_eys || s_eys <= 0.01) {
FCEUD_PrintError("yscale out of bounds.");
KillVideo();
return -1;
}
#ifdef OPENGL
s_screen = SDL_SetVideoMode(s_useOpenGL ? s_nativeWidth : xres,
s_useOpenGL ? s_nativeHeight : yres,
desbpp, flags);
#else
s_screen = SDL_SetVideoMode(xres, yres, desbpp, flags);
#endif
if(!s_screen) {
FCEUD_PrintError(SDL_GetError());
return -1;
}
} else {
int desbpp;
g_config->getOption("SDL.BitsPerPixel", &desbpp);
g_config->getOption("SDL.XScale", &s_exs);
g_config->getOption("SDL.YScale", &s_eys);
g_config->getOption("SDL.SpecialFX", &s_eefx);
// -Video Modes Tag-
if(s_sponge) {
if(s_sponge >= 4) {
s_exs = s_eys = 3;
} else {
s_exs = s_eys = 2;
}
s_eefx = 0;
}
#ifdef OPENGL
if(!s_useOpenGL) {
s_exs = (int)s_exs;
s_eys = (int)s_eys;
}
if(s_exs <= 0.01) {
FCEUD_PrintError("xscale out of bounds.");
KillVideo();
return -1;
}
if(s_eys <= 0.01) {
FCEUD_PrintError("yscale out of bounds.");
KillVideo();
return -1;
}
if(s_sponge && s_useOpenGL) {
FCEUD_PrintError("scalers not compatible with openGL mode.");
KillVideo();
return -1;
}
#endif
#if defined(_GTK) && defined(SDL_VIDEO_DRIVER_X11)
if(noGui == 0)
{
while (gtk_events_pending())
gtk_main_iteration_do(FALSE);
char SDL_windowhack[128];
sprintf(SDL_windowhack, "SDL_WINDOWID=%u", (unsigned int)GDK_WINDOW_XID(gtk_widget_get_window(evbox)));
SDL_putenv(SDL_windowhack);
// init SDL video
if (SDL_WasInit(SDL_INIT_VIDEO))
SDL_QuitSubSystem(SDL_INIT_VIDEO);
if ( SDL_InitSubSystem(SDL_INIT_VIDEO) < 0 )
{
fprintf(stderr, "Couldn't init SDL video: %s\n", SDL_GetError());
gtk_main_quit();
}
}
#endif
s_screen = SDL_SetVideoMode((int)(NWIDTH * s_exs),
(int)(s_tlines * s_eys),
desbpp, flags);
if(!s_screen) {
FCEUD_PrintError(SDL_GetError());
return -1;
}
#ifdef _GTK
if(noGui == 0)
{
GtkRequisition req;
gtk_widget_size_request(GTK_WIDGET(MainWindow), &req);
gtk_window_resize(GTK_WINDOW(MainWindow), req.width, req.height);
}
#endif
}
s_curbpp = s_screen->format->BitsPerPixel;
if(!s_screen) {
FCEUD_PrintError(SDL_GetError());
KillVideo();
return -1;
}
#if 0
// XXX soules - this would be creating a surface on the video
// card, but was commented out for some reason...
s_BlitBuf = SDL_CreateRGBSurface(SDL_HWSURFACE, 256, 240,
s_screen->format->BitsPerPixel,
s_screen->format->Rmask,
s_screen->format->Gmask,
s_screen->format->Bmask, 0);
#endif
FCEU_printf(" Video Mode: %d x %d x %d bpp %s\n",
s_screen->w, s_screen->h, s_screen->format->BitsPerPixel,
s_fullscreen ? "full screen" : "");
if(s_curbpp != 8 && s_curbpp != 16 && s_curbpp != 24 && s_curbpp != 32) {
FCEU_printf(" Sorry, %dbpp modes are not supported by FCE Ultra. Supported bit depths are 8bpp, 16bpp, and 32bpp.\n", s_curbpp);
KillVideo();
return -1;
}
// if the game being run has a name, set it as the window name
if(gi)
{
if(gi->name) {
SDL_WM_SetCaption((const char *)gi->name, (const char *)gi->name);
} else {
SDL_WM_SetCaption(FCEU_NAME_AND_VERSION,"FCE Ultra");
}
}
// create the surface for displaying graphical messages
#ifdef LSB_FIRST
s_IconSurface = SDL_CreateRGBSurfaceFrom((void *)fceu_playicon.pixel_data,
32, 32, 24, 32 * 3,
0xFF, 0xFF00, 0xFF0000, 0x00);
#else
s_IconSurface = SDL_CreateRGBSurfaceFrom((void *)fceu_playicon.pixel_data,
32, 32, 24, 32 * 3,
0xFF0000, 0xFF00, 0xFF, 0x00);
#endif
SDL_WM_SetIcon(s_IconSurface,0);
s_paletterefresh = 1;
// XXX soules - can't SDL do this for us?
// if using more than 8bpp, initialize the conversion routines
if(s_curbpp > 8) {
InitBlitToHigh(s_curbpp >> 3,
s_screen->format->Rmask,
s_screen->format->Gmask,
s_screen->format->Bmask,
s_eefx, s_sponge, 0);
#ifdef OPENGL
if(s_useOpenGL)
{
int openGLip;
g_config->getOption("SDL.OpenGLip", &openGLip);
if(!InitOpenGL(NOFFSET, 256 - (s_clipSides ? 8 : 0),
s_srendline, s_erendline + 1,
s_exs, s_eys, s_eefx,
openGLip, xstretch, ystretch, s_screen))
{
FCEUD_PrintError("Error initializing OpenGL.");
KillVideo();
return -1;
}
}
#endif
}
return 0;
}
/**
* Toggles the full-screen display.
*/
void ToggleFS()
{
// pause while we we are making the switch
bool paused = FCEUI_EmulationPaused();
if(!paused)
FCEUI_ToggleEmulationPause();
int error, fullscreen = s_fullscreen;
// shut down the current video system
KillVideo();
// flip the fullscreen flag
g_config->setOption("SDL.Fullscreen", !fullscreen);
#ifdef _GTK
if(noGui == 0)
{
if(!fullscreen)
showGui(0);
else
showGui(1);
}
#endif
// try to initialize the video
error = InitVideo(GameInfo);
if(error) {
// if we fail, just continue with what worked before
g_config->setOption("SDL.Fullscreen", fullscreen);
InitVideo(GameInfo);
}
// if we paused to make the switch; unpause
if(!paused)
FCEUI_ToggleEmulationPause();
}
static SDL_Color s_psdl[256];
/**
* Sets the color for a particular index in the palette.
*/
void
FCEUD_SetPalette(uint8 index,
uint8 r,
uint8 g,
uint8 b)
{
s_psdl[index].r = r;
s_psdl[index].g = g;
s_psdl[index].b = b;
s_paletterefresh = 1;
}
/**
* Gets the color for a particular index in the palette.
*/
void
FCEUD_GetPalette(uint8 index,
uint8 *r,
uint8 *g,
uint8 *b)
{
*r = s_psdl[index].r;
*g = s_psdl[index].g;
*b = s_psdl[index].b;
}
/**
* Pushes the palette structure into the underlying video subsystem.
*/
static void RedoPalette()
{
#ifdef OPENGL
if(s_useOpenGL)
SetOpenGLPalette((uint8*)s_psdl);
else
#endif
{
if(s_curbpp > 8) {
SetPaletteBlitToHigh((uint8*)s_psdl);
} else
{
SDL_SetPalette(s_screen, SDL_PHYSPAL, s_psdl, 0, 256);
}
}
}
// XXX soules - console lock/unlock unimplemented?
///Currently unimplemented.
void LockConsole(){}
///Currently unimplemented.
void UnlockConsole(){}
/**
* Pushes the given buffer of bits to the screen.
*/
void
BlitScreen(uint8 *XBuf)
{
SDL_Surface *TmpScreen;
uint8 *dest;
int xo = 0, yo = 0;
if(!s_screen) {
return;
}
// refresh the palette if required
if(s_paletterefresh) {
RedoPalette();
s_paletterefresh = 0;
}
#ifdef OPENGL
// OpenGL is handled separately
if(s_useOpenGL) {
BlitOpenGL(XBuf);
return;
}
#endif
// XXX soules - not entirely sure why this is being done yet
XBuf += s_srendline * 256;
if(s_BlitBuf) {
TmpScreen = s_BlitBuf;
} else {
TmpScreen = s_screen;
}
// lock the display, if necessary
if(SDL_MUSTLOCK(TmpScreen)) {
if(SDL_LockSurface(TmpScreen) < 0) {
return;
}
}
dest = (uint8*)TmpScreen->pixels;
if(s_fullscreen) {
xo = (int)(((TmpScreen->w - NWIDTH * s_exs)) / 2);
dest += xo * (s_curbpp >> 3);
if(TmpScreen->h > (s_tlines * s_eys)) {
yo = (int)((TmpScreen->h - s_tlines * s_eys) / 2);
dest += yo * TmpScreen->pitch;
}
}
// XXX soules - again, I'm surprised SDL can't handle this
// perform the blit, converting bpp if necessary
if(s_curbpp > 8) {
if(s_BlitBuf) {
Blit8ToHigh(XBuf + NOFFSET, dest, NWIDTH, s_tlines,
TmpScreen->pitch, 1, 1);
} else {
Blit8ToHigh(XBuf + NOFFSET, dest, NWIDTH, s_tlines,
TmpScreen->pitch, (int)s_exs, (int)s_eys);
}
} else {
if(s_BlitBuf) {
Blit8To8(XBuf + NOFFSET, dest, NWIDTH, s_tlines,
TmpScreen->pitch, 1, 1, 0, s_sponge);
} else {
Blit8To8(XBuf + NOFFSET, dest, NWIDTH, s_tlines,
TmpScreen->pitch, (int)s_exs, (int)s_eys,
s_eefx, s_sponge);
}
}
// unlock the display, if necessary
if(SDL_MUSTLOCK(TmpScreen)) {
SDL_UnlockSurface(TmpScreen);
}
// if we have a hardware video buffer, do a fast video->video copy
if(s_BlitBuf) {
SDL_Rect srect;
SDL_Rect drect;
srect.x = 0;
srect.y = 0;
srect.w = NWIDTH;
srect.h = s_tlines;
drect.x = 0;
drect.y = 0;
drect.w = (Uint16)(s_exs * NWIDTH);
drect.h = (Uint16)(s_eys * s_tlines);
SDL_BlitSurface(s_BlitBuf, &srect, s_screen, &drect);
}
// ensure that the display is updated
SDL_UpdateRect(s_screen, xo, yo,
(Uint32)(NWIDTH * s_exs), (Uint32)(s_tlines * s_eys));
#ifdef CREATE_AVI
#if 0 /* PAL INTO NTSC HACK */
{ int fps = FCEUI_GetDesiredFPS();
if(FCEUI_GetDesiredFPS() == 838977920) fps = 1008307711;
NESVideoLoggingVideo(s_screen->pixels, width,height, fps, s_curbpp);
if(FCEUI_GetDesiredFPS() == 838977920)
{
static unsigned dup=0;
if(++dup==5) { dup=0;
NESVideoLoggingVideo(s_screen->pixels, width,height, fps, s_curbpp); }
} }
#else
{ int fps = FCEUI_GetDesiredFPS();
static unsigned char* result = NULL;
static unsigned resultsize = 0;
int width = NWIDTH, height = s_tlines;
if(!result || resultsize != width*height*3*2)
{
if(result) free(result);
result = (unsigned char*) FCEU_dmalloc(resultsize = width*height*3*2);
}
switch(s_curbpp)
{
#if 0
case 24: case 32: case 15: case 16:
/* Convert to I420 if possible, because our I420 conversion is optimized
* and it'll produce less network traffic, hence faster throughput than
* anything else. And H.264 eats only I420, so it'd be converted sooner
* or later anyway if we didn't do it. Win-win situation.
*/
switch(s_curbpp)
{
case 32: Convert32To_I420Frame(s_screen->pixels, &result[0], width*height, width); break;
case 24: Convert24To_I420Frame(s_screen->pixels, &result[0], width*height, width); break;
case 15: Convert15To_I420Frame(s_screen->pixels, &result[0], width*height, width); break;
case 16: Convert16To_I420Frame(s_screen->pixels, &result[0], width*height, width); break;
}
NESVideoLoggingVideo(&result[0], width,height, fps, 12);
break;
#endif
default:
NESVideoLoggingVideo(s_screen->pixels, width,height, fps, s_curbpp);
}
}
#endif
#if REALTIME_LOGGING
{
static struct timeval last_time;
static int first_time=1;
extern long soundrate;
struct timeval cur_time;
gettimeofday(&cur_time, NULL);
double timediff =
(cur_time.tv_sec *1e6 + cur_time.tv_usec
- (last_time.tv_sec *1e6 + last_time.tv_usec)) / 1e6;
int nframes = timediff * 60 - 1;
if(first_time)
first_time = 0;
else while(nframes > 0)
{
static const unsigned char Buf[800*4] = {0};
NESVideoLoggingVideo(screen->pixels, 256,tlines, FCEUI_GetDesiredFPS(), s_curbpp);
NESVideoLoggingAudio(Buf, soundrate,16,1, soundrate/60.0);
--nframes;
}
memcpy(&last_time, &cur_time, sizeof(last_time));
}
#endif
#endif
// have to flip the displayed buffer in the case of double buffering
if(s_screen->flags & SDL_DOUBLEBUF) {
SDL_Flip(s_screen);
}
}
/**
* Converts an x-y coordinate in the window manager into an x-y
* coordinate on FCEU's screen.
*/
uint32
PtoV(uint16 x,
uint16 y)
{
y = (uint16)((double)y / s_eys);
x = (uint16)((double)x / s_exs);
if(s_clipSides) {
x += 8;
}
y += s_srendline;
return (x | (y << 16));
}
bool enableHUDrecording = false;
bool FCEUI_AviEnableHUDrecording()
{
if (enableHUDrecording)
return true;
return false;
}
void FCEUI_SetAviEnableHUDrecording(bool enable)
{
enableHUDrecording = enable;
}
bool disableMovieMessages = false;
bool FCEUI_AviDisableMovieMessages()
{
if (disableMovieMessages)
return true;
return false;
}
void FCEUI_SetAviDisableMovieMessages(bool disable)
{
disableMovieMessages = disable;
}
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