| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Ben Parnell |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | /****************************************/ |
| 22 | /* FCE Ultra */ |
| 23 | /* */ |
| 24 | /* video.c */ |
| 25 | /* */ |
| 26 | /* Some generic high-level video */ |
| 27 | /* related functions. */ |
| 28 | /****************************************/ |
| 29 | |
| 30 | #include <string.h> |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #ifdef GP2X |
| 34 | #include <unistd.h> |
| 35 | #endif |
| 36 | |
| 37 | #include "types.h" |
| 38 | #include "video.h" |
| 39 | #include "fce.h" |
| 40 | #include "svga.h" |
| 41 | #include "version.h" |
| 42 | #include "general.h" |
| 43 | #include "memory.h" |
| 44 | |
| 45 | uint8 *XBuf=NULL; |
| 46 | |
| 47 | int InitVirtualVideo(void) |
| 48 | { |
| 49 | if(!XBuf) /* Some driver code may allocate XBuf externally. */ |
| 50 | if(!(XBuf = (uint8*) (FCEU_malloc(320 * 240)))) |
| 51 | return 0; |
| 52 | /* |
| 53 | if(sizeof(uint8*)==4) |
| 54 | { |
| 55 | m=(uint32) XBuf; |
| 56 | m+=8;m&=0xFFFFFFF8; |
| 57 | XBuf=(uint8 *)m; |
| 58 | } |
| 59 | */ |
| 60 | memset(XBuf,128,320*240); |
| 61 | return 1; |
| 62 | } |
| 63 | |
| 64 | #ifndef ZLIB |
| 65 | static uint8 pcxheader[128] = |
| 66 | { |
| 67 | 10,5,1,8,1,0,1,0,0,1,240,0,2,1,234,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 68 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,0,0,0,0,0,0,0, |
| 69 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 70 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0, |
| 71 | }; |
| 72 | |
| 73 | int SaveSnapshot(void) |
| 74 | { |
| 75 | char *fn=0; |
| 76 | uint8 *tmp; |
| 77 | int x,u,y; |
| 78 | FILE *pp=NULL; |
| 79 | |
| 80 | for(u=0;u<999;u++) |
| 81 | { |
| 82 | pp=fopen((fn=FCEU_MakeFName(FCEUMKF_SNAP,u,"pcx")),"rb"); |
| 83 | if(pp==NULL) break; |
| 84 | fclose(pp); |
| 85 | } |
| 86 | |
| 87 | if(!(pp=fopen(fn,"wb"))) |
| 88 | return 0; |
| 89 | |
| 90 | { |
| 91 | int totallines=FSettings.LastSLine-FSettings.FirstSLine+1; |
| 92 | |
| 93 | tmp=XBuf+8+FSettings.FirstSLine*272; |
| 94 | |
| 95 | pcxheader[10]=totallines; |
| 96 | fwrite(pcxheader,1,128,pp); |
| 97 | for(y=0;y<totallines;y++) |
| 98 | { |
| 99 | for(x=0;x<256;x++) |
| 100 | { |
| 101 | if(*tmp>=0xc0) fputc(0xC1,pp); |
| 102 | fputc(*tmp,pp); |
| 103 | tmp++; |
| 104 | } |
| 105 | tmp+=16; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | fputc(0xC,pp); |
| 110 | for(x=0;x<256;x++) |
| 111 | { |
| 112 | uint8 r,g,b; |
| 113 | |
| 114 | FCEUD_GetPalette(x,&r,&g,&b); |
| 115 | fputc(r,pp); |
| 116 | fputc(g,pp); |
| 117 | fputc(b,pp); |
| 118 | } |
| 119 | fclose(pp); |
| 120 | |
| 121 | return u+1; |
| 122 | } |
| 123 | |
| 124 | #else |
| 125 | |
| 126 | #include <zlib.h> |
| 127 | #include "crc32.h" |
| 128 | |
| 129 | static int WritePNGChunk(FILE *fp, uint32 size, char *type, uint8 *data) |
| 130 | { |
| 131 | uint32 crc; |
| 132 | |
| 133 | uint8 tempo[4]; |
| 134 | |
| 135 | tempo[0]=size>>24; |
| 136 | tempo[1]=size>>16; |
| 137 | tempo[2]=size>>8; |
| 138 | tempo[3]=size; |
| 139 | |
| 140 | if(fwrite(tempo,4,1,fp)!=1) |
| 141 | return 0; |
| 142 | if(fwrite(type,4,1,fp)!=1) |
| 143 | return 0; |
| 144 | |
| 145 | if(size) |
| 146 | if(fwrite(data,1,size,fp)!=size) |
| 147 | return 0; |
| 148 | |
| 149 | crc=CalcCRC32(0,(uint8 *)type,4); |
| 150 | if(size) |
| 151 | crc=CalcCRC32(crc,data,size); |
| 152 | |
| 153 | tempo[0]=crc>>24; |
| 154 | tempo[1]=crc>>16; |
| 155 | tempo[2]=crc>>8; |
| 156 | tempo[3]=crc; |
| 157 | |
| 158 | if(fwrite(tempo,4,1,fp)!=1) |
| 159 | return 0; |
| 160 | return 1; |
| 161 | } |
| 162 | |
| 163 | int SaveSnapshot(void) |
| 164 | { |
| 165 | char *fn=0; |
| 166 | int totallines=FSettings.LastSLine-FSettings.FirstSLine+1; |
| 167 | int x,u,y; |
| 168 | FILE *pp=NULL; |
| 169 | uint8 *compmem=NULL; |
| 170 | uint32 compmemsize=totallines*263+12; |
| 171 | |
| 172 | if(!(compmem=FCEU_malloc(compmemsize))) |
| 173 | return 0; |
| 174 | |
| 175 | for(u=0;u<999;u++) |
| 176 | { |
| 177 | pp=fopen((fn=FCEU_MakeFName(FCEUMKF_SNAP,u,"png")),"rb"); |
| 178 | if(pp==NULL) break; |
| 179 | fclose(pp); |
| 180 | } |
| 181 | |
| 182 | if(!(pp=fopen(fn,"wb"))) |
| 183 | return 0; |
| 184 | { |
| 185 | static uint8 header[8]={137,80,78,71,13,10,26,10}; |
| 186 | if(fwrite(header,8,1,pp)!=1) |
| 187 | goto PNGerr; |
| 188 | } |
| 189 | |
| 190 | { |
| 191 | uint8 chunko[13]; |
| 192 | |
| 193 | chunko[0]=chunko[1]=chunko[3]=0; |
| 194 | chunko[2]=0x1; // Width of 256 |
| 195 | |
| 196 | chunko[4]=chunko[5]=chunko[6]=0; |
| 197 | chunko[7]=totallines; // Height |
| 198 | |
| 199 | chunko[8]=8; // bit depth |
| 200 | chunko[9]=3; // Color type; indexed 8-bit |
| 201 | chunko[10]=0; // compression: deflate |
| 202 | chunko[11]=0; // Basic adapative filter set(though none are used). |
| 203 | chunko[12]=0; // No interlace. |
| 204 | |
| 205 | if(!WritePNGChunk(pp,13,"IHDR",chunko)) |
| 206 | goto PNGerr; |
| 207 | } |
| 208 | |
| 209 | { |
| 210 | char pdata[256*3]; |
| 211 | |
| 212 | //void FCEUD_GetPalette(uint8 i,uint8 *r, unsigned char *g, unsigned char *b); |
| 213 | for(x=0;x<256;x++) |
| 214 | FCEUD_GetPalette(x,(uint8*)(pdata+x*3),(unsigned char*)(pdata+x*3+1),(unsigned char*)(pdata+x*3+2)); |
| 215 | // static int WritePNGChunk(FILE *fp, uint32 size, char *type, uint8 *data) |
| 216 | if(!WritePNGChunk(pp,256*3,"PLTE",(uint8 *)pdata)) |
| 217 | goto PNGerr; |
| 218 | } |
| 219 | |
| 220 | { |
| 221 | uint8 *tmp=XBuf+FSettings.FirstSLine*272+8; |
| 222 | uint8 *dest,*mal,*mork; |
| 223 | |
| 224 | /* If memory couldn't be allocated, just use XBuf(screen contents |
| 225 | will be corrupted for one frame, though. |
| 226 | */ |
| 227 | if(!(mal=mork=dest=malloc((totallines<<8)+totallines))) |
| 228 | mork=dest=XBuf; |
| 229 | |
| 230 | for(y=0;y<totallines;y++) |
| 231 | { |
| 232 | *dest=0; // No filter. |
| 233 | dest++; |
| 234 | for(x=256;x;x--,tmp++,dest++) |
| 235 | *dest=*tmp; |
| 236 | tmp+=16; |
| 237 | } |
| 238 | |
| 239 | if(compress(compmem,&compmemsize,mork,(totallines<<8)+totallines)!=Z_OK) |
| 240 | { |
| 241 | if(mal) free(mal); |
| 242 | goto PNGerr; |
| 243 | } |
| 244 | if(mal) free(mal); |
| 245 | if(!WritePNGChunk(pp,compmemsize,"IDAT",compmem)) |
| 246 | goto PNGerr; |
| 247 | } |
| 248 | if(!WritePNGChunk(pp,0,"IEND",0)) |
| 249 | goto PNGerr; |
| 250 | |
| 251 | free(compmem); |
| 252 | fclose(pp); |
| 253 | #ifdef GP2X |
| 254 | sync(); |
| 255 | #endif |
| 256 | |
| 257 | return u+1; |
| 258 | |
| 259 | |
| 260 | PNGerr: |
| 261 | if(compmem) |
| 262 | free(compmem); |
| 263 | if(pp) |
| 264 | fclose(pp); |
| 265 | return(0); |
| 266 | } |
| 267 | |
| 268 | #endif |