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fceux/video.c

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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <zlib.h>
#ifdef _USE_SHARED_MEMORY_
#include <windows.h>
#endif
#include "types.h"
#include "video.h"
#include "fceu.h"
#include "general.h"
#include "memory.h"
#include "crc32.h"
#include "state.h"
#include "movie.h"
#include "palette.h"
#include "nsf.h"
#include "input.h"
#include "vsuni.h"
uint8 *XBuf=NULL;
uint8 *XBackBuf=NULL;
static uint8 *xbsave=NULL;
//for input display
extern int input_display;
extern uint32 cur_input_display;
#ifdef _USE_SHARED_MEMORY_
HANDLE mapXBuf;
#endif
void FCEU_KillVirtualVideo(void)
{
//mbg merge TODO 7/17/06 temporarily removed
//if(xbsave)
//{
// free(xbsave);
// xbsave=0;
//}
//if(XBuf)
//{
//UnmapViewOfFile(XBuf);
//CloseHandle(mapXBuf);
//mapXBuf=NULL;
//}
//if(XBackBuf)
//{
// free(XBackBuf);
// XBackBuf=0;
//}
}
int FCEU_InitVirtualVideo(void)
{
if(!XBuf) /* Some driver code may allocate XBuf externally. */
/* 256 bytes per scanline, * 240 scanline maximum, +8 for alignment,
*/
#ifdef _USE_SHARED_MEMORY_
mapXBuf = CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE, 0, 256 * 256 + 8,"fceu.XBuf");
if(mapXBuf == NULL || GetLastError() == ERROR_ALREADY_EXISTS)
{
CloseHandle(mapXBuf);
mapXBuf = NULL;
XBuf= (uint8*) (FCEU_malloc(256 * 256 + 8));
XBackBuf= (uint8*) (FCEU_malloc(256 * 256 + 8));
}
else
{
XBuf = (uint8 *)MapViewOfFile(mapXBuf, FILE_MAP_WRITE, 0, 0, 0);
XBackBuf = (uint8*) (FCEU_malloc(256 * 256 + 8));
}
if (!XBuf || !XBackBuf)
return 0;
#else
if(!(XBuf= (uint8*) (FCEU_malloc(256 * 256 + 8))) ||
!(XBackBuf= (uint8*) (FCEU_malloc(256 * 256 + 8))))
return 0;
#endif //_USE_SHARED_MEMORY_
xbsave=XBuf;
if(sizeof(uint8*)==4)
{
uint32 m;
m=(uint32)XBuf;
m=(4-m)&3;
XBuf+=m;
}
memset(XBuf,128,256*256); //*240);
memset(XBackBuf,128,256*256);
return 1;
}
int howlong;
static char errmsg[65];
#include "drawing.h"
#ifdef FRAMESKIP
//#define SHOWFPS
void ShowFPS(void);
void FCEU_PutImageDummy(void)
{
#ifdef SHOWFPS
ShowFPS();
#endif
if(FCEUGameInfo->type!=GIT_NSF)
{
FCEU_DrawNTSCControlBars(XBuf);
FCEU_DrawSaveStates(XBuf);
FCEU_DrawMovies(XBuf);
}
if(howlong) howlong--; /* DrawMessage() */
}
#endif
static int dosnapsave=0;
void FCEUI_SaveSnapshot(void)
{
dosnapsave=1;
}
static void FCEU_DrawRecordingStatus(uint8* XBuf)
{
int n=0;
if(FCEUD_ShowStatusIcon())
{
if(FCEUI_EmulationPaused())
n=3;
else if(FCEUI_IsMovieActive()>0)
n=2;
else if(FCEUI_IsMovieActive()<0)
n=1;
}
if(n)
FCEU_DrawRecordingStatusN(XBuf, n);
}
static void ReallySnap(void)
{
int x=SaveSnapshot();
if(!x)
FCEU_DispMessage("Error saving screen snapshot.");
else
FCEU_DispMessage("Screen snapshot %d saved.",x-1);
}
void FCEU_PutImage(void)
{
#ifdef SHOWFPS
ShowFPS();
#endif
/*
// HACK to record input and/or frame counter into AVI
extern int frame_display, input_display, movcounter;
int movieDrawInAVI = FCEUI_AviIsRecording() && (frame_display || input_display) && movcounter;
if(movieDrawInAVI)
{
FCEU_DrawMovies(XBuf);
DrawMessage();
}
*/
if(FCEUGameInfo->type==GIT_NSF)
{
DrawNSF(XBuf);
/* Save snapshot after NSF screen is drawn. Why would we want to
do it before?
*/
if(dosnapsave)
{
ReallySnap();
dosnapsave=0;
}
}
else
{
/* Update AVI before overlay stuff is written */
if(!FCEUI_EmulationPaused())
FCEUI_AviVideoUpdate(XBuf);
/* Save backbuffer before overlay stuff is written. */
if(!FCEUI_EmulationPaused())
memcpy(XBackBuf, XBuf, 256*256);
/* Save snapshot before overlay stuff is written. */
if(dosnapsave)
{
ReallySnap();
dosnapsave=0;
}
if(FCEUGameInfo->type==GIT_VSUNI)
FCEU_VSUniDraw(XBuf);
FCEU_DrawSaveStates(XBuf);
FCEU_DrawMovies(XBuf);
FCEU_DrawNTSCControlBars(XBuf);
FCEU_DrawRecordingStatus(XBuf);
}
// if(!movieDrawInAVI)
DrawMessage();
FCEU_DrawInput(XBuf);
//Fancy input display code
if(input_display)
{
int controller, c, color;
int i, j;
uint8 *t = XBuf+(FSettings.LastSLine-9)*256 + 20; //mbg merge 7/17/06 changed t to uint8*
if(input_display > 4) input_display = 4;
for(controller = 0; controller < input_display; controller++, t += 56)
{
for(i = 0; i < 34;i++)
for(j = 0; j <9 ; j++)
t[i+j*256] = (t[i+j*256] & 15) | 0xC0;
for(i = 3; i < 6; i++)
for(j = 3; j< 6; j++)
t[i+j*256] = 3;
c = cur_input_display >> (controller * 8);
c &= 255;
//A
color = c&1?4:3;
for(i=0; i < 4; i++)
{
for(j = 0; j < 4; j++)
{
if(i%3==0 && j %3 == 0)
continue;
t[30+4*256+i+j*256] = color;
}
}
//B
color = c&2?4:3;
for(i=0; i < 4; i++)
{
for(j = 0; j < 4; j++)
{
if(i%3==0 && j %3 == 0)
continue;
t[24+4*256+i+j*256] = color;
}
}
//Select
color = c&4?4:3;
for(i = 0; i < 4; i++)
{
t[11+5*256+i] = color;
t[11+6*256+i] = color;
}
//Start
color = c&8?4:3;
for(i = 0; i < 4; i++)
{
t[17+5*256+i] = color;
t[17+6*256+i] = color;
}
//Up
color = c&16?4:3;
for(i = 0; i < 3; i++)
{
for(j = 0; j < 3; j++)
{
t[3+i+256*j] = color;
}
}
//Down
color = c&32?4:3;
for(i = 0; i < 3; i++)
{
for(j = 0; j < 3; j++)
{
t[3+i+256*j+6*256] = color;
}
}
//Left
color = c&64?4:3;
for(i = 0; i < 3; i++)
{
for(j = 0; j < 3; j++)
{
t[3*256+i+256*j] = color;
}
}
//Right
color = c&128?4:3;
for(i = 0; i < 3; i++)
{
for(j = 0; j < 3; j++)
{
t[6+3*256+i+256*j] = color;
}
}
}
}
}
void FCEU_DispMessage(char *format, ...)
{
va_list ap;
va_start(ap,format);
vsprintf(errmsg,format,ap);
va_end(ap);
howlong=180;
extern int movcounter;
movcounter=0;
}
void FCEU_ResetMessages(void)
{
howlong=0;
}
static int WritePNGChunk(FILE *fp, uint32 size, char *type, uint8 *data)
{
uint32 crc;
uint8 tempo[4];
tempo[0]=size>>24;
tempo[1]=size>>16;
tempo[2]=size>>8;
tempo[3]=size;
if(fwrite(tempo,4,1,fp)!=1)
return 0;
if(fwrite(type,4,1,fp)!=1)
return 0;
if(size)
if(fwrite(data,1,size,fp)!=size)
return 0;
crc=CalcCRC32(0,(uint8 *)type,4);
if(size)
crc=CalcCRC32(crc,data,size);
tempo[0]=crc>>24;
tempo[1]=crc>>16;
tempo[2]=crc>>8;
tempo[3]=crc;
if(fwrite(tempo,4,1,fp)!=1)
return 0;
return 1;
}
int SaveSnapshot(void)
{
static unsigned int lastu=0;
char *fn=0;
int totallines=FSettings.LastSLine-FSettings.FirstSLine+1;
int x,u,y;
FILE *pp=NULL;
uint8 *compmem=NULL;
uLongf compmemsize=totallines*263+12;
if(!(compmem=(uint8 *)FCEU_malloc(compmemsize)))
return 0;
for(u=lastu;u<99999;u++)
{
pp=FCEUD_UTF8fopen((fn=FCEU_MakeFName(FCEUMKF_SNAP,u,"png")),"rb");
if(pp==NULL) break;
fclose(pp);
}
lastu=u;
if(!(pp=FCEUD_UTF8fopen(fn,"wb")))
{
free(fn);
return 0;
}
free(fn);
{
static uint8 header[8]={137,80,78,71,13,10,26,10};
if(fwrite(header,8,1,pp)!=1)
goto PNGerr;
}
{
uint8 chunko[13];
chunko[0]=chunko[1]=chunko[3]=0;
chunko[2]=0x1; // Width of 256
chunko[4]=chunko[5]=chunko[6]=0;
chunko[7]=totallines; // Height
chunko[8]=8; // bit depth
chunko[9]=3; // Color type; indexed 8-bit
chunko[10]=0; // compression: deflate
chunko[11]=0; // Basic adapative filter set(though none are used).
chunko[12]=0; // No interlace.
if(!WritePNGChunk(pp,13,"IHDR",chunko))
goto PNGerr;
}
{
uint8 pdata[256*3];
for(x=0;x<256;x++)
FCEUD_GetPalette(x,pdata+x*3,pdata+x*3+1,pdata+x*3+2);
if(!WritePNGChunk(pp,256*3,"PLTE",pdata))
goto PNGerr;
}
{
uint8 *tmp=XBuf+FSettings.FirstSLine*256;
uint8 *dest,*mal,*mork;
if(!(mal=mork=dest=(uint8 *)malloc((totallines<<8)+totallines)))
goto PNGerr;
// mork=dest=XBuf;
for(y=0;y<totallines;y++)
{
*dest=0; // No filter.
dest++;
for(x=256;x;x--,tmp++,dest++)
*dest=*tmp;
}
if(compress(compmem,&compmemsize,mork,(totallines<<8)+totallines)!=Z_OK)
{
if(mal) free(mal);
goto PNGerr;
}
if(mal) free(mal);
if(!WritePNGChunk(pp,compmemsize,"IDAT",compmem))
goto PNGerr;
}
if(!WritePNGChunk(pp,0,"IEND",0))
goto PNGerr;
free(compmem);
fclose(pp);
return u+1;
PNGerr:
if(compmem)
free(compmem);
if(pp)
fclose(pp);
return(0);
}
#ifdef SHOWFPS
uint64 FCEUD_GetTime(void);
uint64 FCEUD_GetTimeFreq(void);
static uint64 boop[60];
static int boopcount = 0;
void ShowFPS(void)
{
uint64 da = FCEUD_GetTime() - boop[boopcount];
char fpsmsg[16];
int booplimit = PAL?50:60;
boop[boopcount] = FCEUD_GetTime();
sprintf(fpsmsg, "%8.1f",(double)booplimit / ((double)da / FCEUD_GetTimeFreq()));
DrawTextTrans(XBuf + (256-8-8*8) + (FSettings.FirstSLine+4)*256,256,fpsmsg,4);
// It's not averaging FPS over exactly 1 second, but it's close enough.
boopcount = (boopcount + 1) % booplimit;
}
#endif
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