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Revision 783 - (view) (download)
| 1 : | edgomez | 780 | /***************************************************************************** |
| 2 : | chl | 376 | * |
| 3 : | edgomez | 780 | * XVID MPEG-4 VIDEO CODEC |
| 4 : | * - Console based decoding test application - | ||
| 5 : | chl | 376 | * |
| 6 : | edgomez | 780 | * Copyright(C) 2002 Christoph Lampert |
| 7 : | chl | 376 | * |
| 8 : | edgomez | 780 | * This program is free software; you can redistribute it and/or modify |
| 9 : | * it under the terms of the GNU General Public License as published by | ||
| 10 : | * the Free Software Foundation; either version 2 of the License, or | ||
| 11 : | * (at your option) any later version. | ||
| 12 : | chl | 376 | * |
| 13 : | edgomez | 780 | * This program is distributed in the hope that it will be useful, |
| 14 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 16 : | * GNU General Public License for more details. | ||
| 17 : | chl | 376 | * |
| 18 : | edgomez | 780 | * You should have received a copy of the GNU General Public License |
| 19 : | * along with this program; if not, write to the Free Software | ||
| 20 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 21 : | * | ||
| 22 : | edgomez | 783 | * $Id: xvid_decraw.c,v 1.1.2.2 2003-01-13 00:37:20 edgomez Exp $ |
| 23 : | edgomez | 780 | * |
| 24 : | ****************************************************************************/ | ||
| 25 : | chl | 376 | |
| 26 : | edgomez | 780 | /***************************************************************************** |
| 27 : | chl | 376 | * |
| 28 : | edgomez | 780 | * Application notes : |
| 29 : | chl | 376 | * |
| 30 : | edgomez | 780 | * An MPEG-4 bitstream is read from an input file (or stdin) and decoded, |
| 31 : | * the speed for this is measured. | ||
| 32 : | chl | 376 | * |
| 33 : | * The program is plain C and needs no libraries except for libxvidcore, | ||
| 34 : | * and maths-lib, so with UN*X you simply compile by | ||
| 35 : | edgomez | 780 | * |
| 36 : | chl | 376 | * gcc xvid_decraw.c -lxvidcore -lm -o xvid_decraw |
| 37 : | * | ||
| 38 : | * You have to specify the image dimensions (until the add the feature | ||
| 39 : | * to read this from the bitstream) | ||
| 40 : | edgomez | 780 | * |
| 41 : | * Usage : xvid_decraw <-w width> <-h height> [OPTIONS] | ||
| 42 : | * Options : | ||
| 43 : | * -asm : use assembly optimizations (default=disabled) | ||
| 44 : | * -w integer : frame width ([1.2048]) | ||
| 45 : | * -h integer : frame height ([1.2048]) | ||
| 46 : | * -i string : input filename (default=stdin) | ||
| 47 : | * -t integer : input data type (raw=0, mp4u=1) | ||
| 48 : | * -d boolean : save decoder output (0 False*, !=0 True) | ||
| 49 : | * -m boolean : save mpeg4 raw stream to single files (0 False*, !=0 True) | ||
| 50 : | * -help : This help message | ||
| 51 : | * (* means default) | ||
| 52 : | chl | 376 | * |
| 53 : | edgomez | 780 | ****************************************************************************/ |
| 54 : | chl | 376 | |
| 55 : | #include <stdio.h> | ||
| 56 : | #include <stdlib.h> | ||
| 57 : | edgomez | 780 | #include <string.h> |
| 58 : | #include <math.h> | ||
| 59 : | #ifndef _MSC_VER | ||
| 60 : | #include <sys/time.h> | ||
| 61 : | #else | ||
| 62 : | #include <time.h> | ||
| 63 : | #endif | ||
| 64 : | chl | 376 | |
| 65 : | edgomez | 780 | #include "xvid.h" |
| 66 : | chl | 376 | |
| 67 : | edgomez | 780 | /***************************************************************************** |
| 68 : | * Global vars in module and constants | ||
| 69 : | ****************************************************************************/ | ||
| 70 : | chl | 376 | |
| 71 : | edgomez | 780 | /* max number of frames */ |
| 72 : | #define ABS_MAXFRAMENR 9999 | ||
| 73 : | chl | 376 | |
| 74 : | edgomez | 780 | static int XDIM = 0; |
| 75 : | static int YDIM = 0; | ||
| 76 : | static int ARG_SAVEDECOUTPUT = 0; | ||
| 77 : | static int ARG_SAVEMPEGSTREAM = 0; | ||
| 78 : | static int ARG_STREAMTYPE = 0; | ||
| 79 : | static char *ARG_INPUTFILE = NULL; | ||
| 80 : | chl | 376 | |
| 81 : | |||
| 82 : | edgomez | 780 | static char filepath[256] = "./"; |
| 83 : | static void *dec_handle = NULL; | ||
| 84 : | chl | 376 | |
| 85 : | edgomez | 780 | # define BUFFER_SIZE 10*XDIM*YDIM |
| 86 : | chl | 376 | |
| 87 : | edgomez | 780 | #define LONG_PACK(a,b,c,d) ((long) (((long)(a))<<24) | (((long)(b))<<16) | \ |
| 88 : | (((long)(c))<<8) |((long)(d))) | ||
| 89 : | chl | 376 | |
| 90 : | edgomez | 780 | #define SWAP(a) ( (((a)&0x000000ff)<<24) | (((a)&0x0000ff00)<<8) | \ |
| 91 : | (((a)&0x00ff0000)>>8) | (((a)&0xff000000)>>24) ) | ||
| 92 : | chl | 376 | |
| 93 : | edgomez | 780 | /***************************************************************************** |
| 94 : | * Local prototypes | ||
| 95 : | ****************************************************************************/ | ||
| 96 : | chl | 376 | |
| 97 : | edgomez | 780 | static double msecond(); |
| 98 : | static int write_pgm(char *filename, | ||
| 99 : | unsigned char *image); | ||
| 100 : | static int dec_init(int use_assembler); | ||
| 101 : | static int dec_main(unsigned char *istream, | ||
| 102 : | unsigned char *ostream, | ||
| 103 : | int istream_size, | ||
| 104 : | int *ostream_size); | ||
| 105 : | static int dec_stop(); | ||
| 106 : | static void usage(); | ||
| 107 : | |||
| 108 : | /***************************************************************************** | ||
| 109 : | * Main program | ||
| 110 : | ****************************************************************************/ | ||
| 111 : | |||
| 112 : | int main(int argc, char *argv[]) | ||
| 113 : | chl | 376 | { |
| 114 : | edgomez | 780 | unsigned char *mp4_buffer = NULL; |
| 115 : | unsigned char *mp4_ptr = NULL; | ||
| 116 : | unsigned char *out_buffer = NULL; | ||
| 117 : | int bigendian = 0; | ||
| 118 : | edgomez | 783 | int still_left_in_packet; |
| 119 : | |||
| 120 : | edgomez | 780 | double totaldectime; |
| 121 : | |||
| 122 : | long totalsize; | ||
| 123 : | int status; | ||
| 124 : | |||
| 125 : | int use_assembler = 0; | ||
| 126 : | |||
| 127 : | char filename[256]; | ||
| 128 : | |||
| 129 : | FILE *in_file; | ||
| 130 : | int filenr; | ||
| 131 : | int i; | ||
| 132 : | |||
| 133 : | printf("xvid_decraw - raw mpeg4 bitstream decoder "); | ||
| 134 : | printf("written by Christoph Lampert 2002\n\n"); | ||
| 135 : | |||
| 136 : | /***************************************************************************** | ||
| 137 : | * Command line parsing | ||
| 138 : | ****************************************************************************/ | ||
| 139 : | |||
| 140 : | for (i=1; i< argc; i++) { | ||
| 141 : | |||
| 142 : | if (strcmp("-asm", argv[i]) == 0 ) { | ||
| 143 : | use_assembler = 1; | ||
| 144 : | } | ||
| 145 : | else if (strcmp("-w", argv[i]) == 0 && i < argc - 1 ) { | ||
| 146 : | i++; | ||
| 147 : | XDIM = atoi(argv[i]); | ||
| 148 : | } | ||
| 149 : | else if (strcmp("-h", argv[i]) == 0 && i < argc - 1 ) { | ||
| 150 : | i++; | ||
| 151 : | YDIM = atoi(argv[i]); | ||
| 152 : | } | ||
| 153 : | else if (strcmp("-d", argv[i]) == 0 && i < argc - 1 ) { | ||
| 154 : | i++; | ||
| 155 : | ARG_SAVEDECOUTPUT = atoi(argv[i]); | ||
| 156 : | } | ||
| 157 : | else if (strcmp("-i", argv[i]) == 0 && i < argc - 1 ) { | ||
| 158 : | i++; | ||
| 159 : | ARG_INPUTFILE = argv[i]; | ||
| 160 : | } | ||
| 161 : | else if (strcmp("-m", argv[i]) == 0 && i < argc - 1 ) { | ||
| 162 : | i++; | ||
| 163 : | ARG_SAVEMPEGSTREAM = atoi(argv[i]); | ||
| 164 : | } | ||
| 165 : | else if (strcmp("-t", argv[i]) == 0 && i < argc - 1 ) { | ||
| 166 : | i++; | ||
| 167 : | ARG_STREAMTYPE = atoi(argv[i]); | ||
| 168 : | } | ||
| 169 : | else if (strcmp("-help", argv[i])) { | ||
| 170 : | usage(); | ||
| 171 : | return(0); | ||
| 172 : | } | ||
| 173 : | else { | ||
| 174 : | usage(); | ||
| 175 : | exit(-1); | ||
| 176 : | } | ||
| 177 : | |||
| 178 : | chl | 376 | } |
| 179 : | edgomez | 780 | |
| 180 : | /***************************************************************************** | ||
| 181 : | * Values checking | ||
| 182 : | ****************************************************************************/ | ||
| 183 : | |||
| 184 : | if(XDIM <= 0 || XDIM > 2048 || YDIM <= 0 || YDIM > 2048) { | ||
| 185 : | usage(); | ||
| 186 : | return -1; | ||
| 187 : | } | ||
| 188 : | |||
| 189 : | if ( ARG_INPUTFILE == NULL || strcmp(ARG_INPUTFILE, "stdin") == 0) { | ||
| 190 : | in_file = stdin; | ||
| 191 : | } | ||
| 192 : | else { | ||
| 193 : | |||
| 194 : | in_file = fopen(ARG_INPUTFILE, "rb"); | ||
| 195 : | if (in_file == NULL) { | ||
| 196 : | fprintf(stderr, "Error opening input file %s\n", ARG_INPUTFILE); | ||
| 197 : | return -1; | ||
| 198 : | } | ||
| 199 : | } | ||
| 200 : | |||
| 201 : | /***************************************************************************** | ||
| 202 : | * Memory allocation | ||
| 203 : | ****************************************************************************/ | ||
| 204 : | |||
| 205 : | /* Memory for encoded mp4 stream */ | ||
| 206 : | mp4_buffer = (unsigned char *) malloc(BUFFER_SIZE); | ||
| 207 : | mp4_ptr = mp4_buffer; | ||
| 208 : | if (!mp4_buffer) | ||
| 209 : | goto free_all_memory; | ||
| 210 : | |||
| 211 : | /* Memory for frame output */ | ||
| 212 : | out_buffer = (unsigned char *) malloc(XDIM*YDIM*4); | ||
| 213 : | if (!out_buffer) | ||
| 214 : | goto free_all_memory; | ||
| 215 : | |||
| 216 : | |||
| 217 : | /***************************************************************************** | ||
| 218 : | * XviD PART Start | ||
| 219 : | ****************************************************************************/ | ||
| 220 : | |||
| 221 : | status = dec_init(use_assembler); | ||
| 222 : | if (status) { | ||
| 223 : | fprintf(stderr, | ||
| 224 : | "Decore INIT problem, return value %d\n", status); | ||
| 225 : | goto release_all; | ||
| 226 : | } | ||
| 227 : | |||
| 228 : | |||
| 229 : | /***************************************************************************** | ||
| 230 : | * Main loop | ||
| 231 : | ****************************************************************************/ | ||
| 232 : | |||
| 233 : | totalsize = LONG_PACK('M','P','4','U'); | ||
| 234 : | mp4_ptr = (unsigned char *)&totalsize; | ||
| 235 : | if(*mp4_ptr == 'M') | ||
| 236 : | bigendian = 1; | ||
| 237 : | chl | 376 | else |
| 238 : | edgomez | 780 | bigendian = 0; |
| 239 : | |||
| 240 : | if(ARG_STREAMTYPE) { | ||
| 241 : | |||
| 242 : | unsigned char header[4]; | ||
| 243 : | |||
| 244 : | /* MP4U format : read header */ | ||
| 245 : | if(feof(in_file)) | ||
| 246 : | goto release_all; | ||
| 247 : | fread(header, 4, 1, in_file); | ||
| 248 : | |||
| 249 : | if(header[0] != 'M' || header[1] != 'P' || | ||
| 250 : | header[2] != '4' || header[3] != 'U') { | ||
| 251 : | fprintf(stderr, "Error, this not a mp4u container file\n"); | ||
| 252 : | goto release_all; | ||
| 253 : | } | ||
| 254 : | |||
| 255 : | } | ||
| 256 : | else { | ||
| 257 : | fread(mp4_buffer, BUFFER_SIZE, 1, in_file); | ||
| 258 : | } | ||
| 259 : | |||
| 260 : | totaldectime = 0; | ||
| 261 : | totalsize = 0; | ||
| 262 : | filenr = 0; | ||
| 263 : | edgomez | 783 | still_left_in_packet = 0; |
| 264 : | edgomez | 780 | mp4_ptr = mp4_buffer; |
| 265 : | |||
| 266 : | do { | ||
| 267 : | |||
| 268 : | int mp4_size = (mp4_buffer + BUFFER_SIZE - mp4_ptr); | ||
| 269 : | int used_bytes = 0; | ||
| 270 : | double dectime; | ||
| 271 : | |||
| 272 : | /* Read data from input file */ | ||
| 273 : | edgomez | 783 | if(ARG_STREAMTYPE ) { |
| 274 : | edgomez | 780 | |
| 275 : | edgomez | 783 | /* |
| 276 : | * MP4U container | ||
| 277 : | * | ||
| 278 : | * When dealing with mp4u, we have to take care about PBB...B packets | ||
| 279 : | * generated with some XviD options. | ||
| 280 : | * | ||
| 281 : | * We use the still_left_in_packet variable to keep trace of how many | ||
| 282 : | * bytes we loaded at a time. | ||
| 283 : | */ | ||
| 284 : | edgomez | 780 | |
| 285 : | edgomez | 783 | /* Still real frames in loaded packet ? */ |
| 286 : | if(still_left_in_packet < 7) { | ||
| 287 : | edgomez | 780 | |
| 288 : | edgomez | 783 | /* Read stream size first */ |
| 289 : | if(feof(in_file)) | ||
| 290 : | break; | ||
| 291 : | fread(&still_left_in_packet, sizeof(long), 1, in_file); | ||
| 292 : | edgomez | 780 | |
| 293 : | edgomez | 783 | /* Mp4U container is big endian */ |
| 294 : | if(!bigendian) | ||
| 295 : | mp4_size = SWAP(still_left_in_packet); | ||
| 296 : | edgomez | 780 | |
| 297 : | edgomez | 783 | /* Read mp4_size_bytes */ |
| 298 : | if(feof(in_file)) | ||
| 299 : | break; | ||
| 300 : | fread(mp4_buffer, still_left_in_packet, 1, in_file); | ||
| 301 : | edgomez | 780 | |
| 302 : | edgomez | 783 | /* |
| 303 : | * When reading mp4u, we don't have to care about buffer | ||
| 304 : | * filling as we know exactly how much bytes there are in | ||
| 305 : | * next frame | ||
| 306 : | */ | ||
| 307 : | mp4_ptr = mp4_buffer; | ||
| 308 : | |||
| 309 : | } | ||
| 310 : | |||
| 311 : | edgomez | 780 | } |
| 312 : | else { | ||
| 313 : | |||
| 314 : | edgomez | 783 | /* |
| 315 : | * Real raw stream | ||
| 316 : | * | ||
| 317 : | * In raw stream mode,we don't have to care how many bytes there're | ||
| 318 : | * still in packet because we simply let the decore decode frames | ||
| 319 : | * without taking care of buffer overruns or underruns. | ||
| 320 : | * | ||
| 321 : | */ | ||
| 322 : | still_left_in_packet = 0; | ||
| 323 : | edgomez | 780 | |
| 324 : | /* buffer more than half empty -> Fill it */ | ||
| 325 : | if (mp4_ptr > mp4_buffer + BUFFER_SIZE/2) { | ||
| 326 : | int rest = (mp4_buffer + BUFFER_SIZE - mp4_ptr); | ||
| 327 : | |||
| 328 : | /* Move data if needed */ | ||
| 329 : | if (rest) | ||
| 330 : | memcpy(mp4_buffer, mp4_ptr, rest); | ||
| 331 : | |||
| 332 : | /* Update mp4_ptr */ | ||
| 333 : | mp4_ptr = mp4_buffer; | ||
| 334 : | |||
| 335 : | /* read new data */ | ||
| 336 : | if(feof(in_file)) | ||
| 337 : | break; | ||
| 338 : | edgomez | 783 | |
| 339 : | edgomez | 780 | fread(mp4_buffer + rest, BUFFER_SIZE - rest, 1, in_file); |
| 340 : | |||
| 341 : | } | ||
| 342 : | |||
| 343 : | } | ||
| 344 : | |||
| 345 : | edgomez | 783 | /* The do loop is just to flush NVOPS */ |
| 346 : | do { | ||
| 347 : | edgomez | 780 | |
| 348 : | edgomez | 783 | /* Decode frame */ |
| 349 : | dectime = msecond(); | ||
| 350 : | status = dec_main(mp4_ptr, out_buffer, mp4_size, &used_bytes); | ||
| 351 : | dectime = msecond() - dectime; | ||
| 352 : | edgomez | 780 | |
| 353 : | edgomez | 783 | if (status) { |
| 354 : | break; | ||
| 355 : | } | ||
| 356 : | edgomez | 780 | |
| 357 : | edgomez | 783 | /* |
| 358 : | * Only needed for real raw stream, mp4u uses | ||
| 359 : | * mp4_ptr = mp4_buffer for each frame | ||
| 360 : | */ | ||
| 361 : | mp4_ptr += used_bytes; | ||
| 362 : | still_left_in_packet -= used_bytes; | ||
| 363 : | |||
| 364 : | /* Total size */ | ||
| 365 : | totalsize += used_bytes; | ||
| 366 : | |||
| 367 : | }while(used_bytes <= 7); /* <= 7 bytes is a NVOPS */ | ||
| 368 : | |||
| 369 : | /* Updated data - Count only usefull decode time */ | ||
| 370 : | edgomez | 780 | totaldectime += dectime; |
| 371 : | edgomez | 783 | |
| 372 : | edgomez | 780 | /* Prints some decoding stats */ |
| 373 : | printf("Frame %5d: dectime =%6.1f ms length=%7d bytes \n", | ||
| 374 : | edgomez | 783 | filenr, dectime, used_bytes); |
| 375 : | |||
| 376 : | /* Save individual mpeg4 stream if required */ | ||
| 377 : | edgomez | 780 | if (ARG_SAVEMPEGSTREAM) { |
| 378 : | FILE *filehandle = NULL; | ||
| 379 : | |||
| 380 : | sprintf(filename, "%sframe%05d.m4v", filepath, filenr); | ||
| 381 : | filehandle = fopen(filename, "wb"); | ||
| 382 : | if(!filehandle) { | ||
| 383 : | fprintf(stderr, | ||
| 384 : | edgomez | 783 | "Error writing single mpeg4 stream to file %s\n", |
| 385 : | filename); | ||
| 386 : | edgomez | 780 | } |
| 387 : | else { | ||
| 388 : | fwrite(mp4_buffer, used_bytes, 1, filehandle); | ||
| 389 : | fclose(filehandle); | ||
| 390 : | } | ||
| 391 : | } | ||
| 392 : | edgomez | 783 | |
| 393 : | edgomez | 780 | /* Save output frame if required */ |
| 394 : | if (ARG_SAVEDECOUTPUT) { | ||
| 395 : | sprintf(filename, "%sdec%05d.pgm", filepath, filenr); | ||
| 396 : | if(write_pgm(filename,out_buffer)) { | ||
| 397 : | fprintf(stderr, | ||
| 398 : | edgomez | 783 | "Error writing decoded PGM frame %s\n", |
| 399 : | filename); | ||
| 400 : | edgomez | 780 | } |
| 401 : | } | ||
| 402 : | |||
| 403 : | filenr++; | ||
| 404 : | |||
| 405 : | edgomez | 783 | } while ( (status>=0) && (filenr<ABS_MAXFRAMENR)); |
| 406 : | edgomez | 780 | |
| 407 : | |||
| 408 : | /***************************************************************************** | ||
| 409 : | * Calculate totals and averages for output, print results | ||
| 410 : | ****************************************************************************/ | ||
| 411 : | |||
| 412 : | totalsize /= filenr; | ||
| 413 : | totaldectime /= filenr; | ||
| 414 : | |||
| 415 : | printf("Avg: dectime %5.2f ms, %5.2f fps, mp4 stream size =%d\n", | ||
| 416 : | totaldectime, 1000/totaldectime, (int)totalsize); | ||
| 417 : | |||
| 418 : | /***************************************************************************** | ||
| 419 : | * XviD PART Stop | ||
| 420 : | ****************************************************************************/ | ||
| 421 : | |||
| 422 : | release_all: | ||
| 423 : | if (dec_handle) { | ||
| 424 : | status = dec_stop(); | ||
| 425 : | if (status) | ||
| 426 : | fprintf(stderr, "decore RELEASE problem return value %d\n", status); | ||
| 427 : | } | ||
| 428 : | |||
| 429 : | free_all_memory: | ||
| 430 : | free(out_buffer); | ||
| 431 : | free(mp4_buffer); | ||
| 432 : | |||
| 433 : | return 0; | ||
| 434 : | chl | 376 | } |
| 435 : | |||
| 436 : | edgomez | 780 | /***************************************************************************** |
| 437 : | * Usage function | ||
| 438 : | ****************************************************************************/ | ||
| 439 : | chl | 376 | |
| 440 : | edgomez | 780 | static void usage() |
| 441 : | chl | 376 | { |
| 442 : | edgomez | 780 | |
| 443 : | fprintf(stderr, "Usage : xvid_decraw <-w width> <-h height> [OPTIONS]\n"); | ||
| 444 : | fprintf(stderr, "Options :\n"); | ||
| 445 : | fprintf(stderr, " -asm : use assembly optimizations (default=disabled)\n"); | ||
| 446 : | fprintf(stderr, " -w integer : frame width ([1.2048])\n"); | ||
| 447 : | fprintf(stderr, " -h integer : frame height ([1.2048])\n"); | ||
| 448 : | fprintf(stderr, " -i string : input filename (default=stdin)\n"); | ||
| 449 : | fprintf(stderr, " -t integer : input data type (raw=0, mp4u=1)\n"); | ||
| 450 : | fprintf(stderr, " -d boolean : save decoder output (0 False*, !=0 True)\n"); | ||
| 451 : | fprintf(stderr, " -m boolean : save mpeg4 raw stream to individual files (0 False*, !=0 True)\n"); | ||
| 452 : | fprintf(stderr, " -help : This help message\n"); | ||
| 453 : | fprintf(stderr, " (* means default)\n"); | ||
| 454 : | |||
| 455 : | } | ||
| 456 : | |||
| 457 : | /***************************************************************************** | ||
| 458 : | * "helper" functions | ||
| 459 : | ****************************************************************************/ | ||
| 460 : | |||
| 461 : | /* return the current time in milli seconds */ | ||
| 462 : | static double | ||
| 463 : | msecond() | ||
| 464 : | { | ||
| 465 : | #ifndef _MSC_VER | ||
| 466 : | struct timeval tv; | ||
| 467 : | gettimeofday(&tv, 0); | ||
| 468 : | return (double)tv.tv_sec*1.0e3 + (double)tv.tv_usec*1.0e-3; | ||
| 469 : | #else | ||
| 470 : | clock_t clk; | ||
| 471 : | clk = clock(); | ||
| 472 : | return clk * 1000 / CLOCKS_PER_SEC; | ||
| 473 : | #endif | ||
| 474 : | } | ||
| 475 : | |||
| 476 : | /***************************************************************************** | ||
| 477 : | * output functions | ||
| 478 : | ****************************************************************************/ | ||
| 479 : | |||
| 480 : | static int | ||
| 481 : | write_pgm(char *filename, | ||
| 482 : | unsigned char *image) | ||
| 483 : | { | ||
| 484 : | int loop; | ||
| 485 : | |||
| 486 : | unsigned char *y = image; | ||
| 487 : | unsigned char *u = image + XDIM*YDIM; | ||
| 488 : | unsigned char *v = image + XDIM*YDIM + XDIM/2*YDIM/2; | ||
| 489 : | |||
| 490 : | chl | 376 | FILE *filehandle; |
| 491 : | edgomez | 780 | filehandle=fopen(filename,"w+b"); |
| 492 : | if (filehandle) { | ||
| 493 : | chl | 376 | |
| 494 : | edgomez | 780 | /* Write header */ |
| 495 : | fprintf(filehandle,"P5\n\n%d %d 255\n", XDIM,YDIM*3/2); | ||
| 496 : | |||
| 497 : | /* Write Y data */ | ||
| 498 : | fwrite(y, 1, XDIM*YDIM, filehandle); | ||
| 499 : | |||
| 500 : | for(loop=0; loop<YDIM/2; loop++) | ||
| 501 : | { | ||
| 502 : | /* Write U scanline */ | ||
| 503 : | fwrite(u, 1, XDIM/2, filehandle); | ||
| 504 : | |||
| 505 : | /* Write V scanline */ | ||
| 506 : | fwrite(v, 1, XDIM/2, filehandle); | ||
| 507 : | |||
| 508 : | /* Update pointers */ | ||
| 509 : | u += XDIM/2; | ||
| 510 : | v += XDIM/2; | ||
| 511 : | |||
| 512 : | } | ||
| 513 : | |||
| 514 : | /* Close file */ | ||
| 515 : | chl | 376 | fclose(filehandle); |
| 516 : | edgomez | 780 | |
| 517 : | chl | 376 | return 0; |
| 518 : | } | ||
| 519 : | else | ||
| 520 : | return 1; | ||
| 521 : | } | ||
| 522 : | |||
| 523 : | edgomez | 780 | /***************************************************************************** |
| 524 : | * Routines for decoding: init decoder, use, and stop decoder | ||
| 525 : | ****************************************************************************/ | ||
| 526 : | chl | 376 | |
| 527 : | edgomez | 780 | /* init decoder before first run */ |
| 528 : | static int | ||
| 529 : | dec_init(int use_assembler) | ||
| 530 : | chl | 376 | { |
| 531 : | int xerr; | ||
| 532 : | |||
| 533 : | XVID_INIT_PARAM xinit; | ||
| 534 : | XVID_DEC_PARAM xparam; | ||
| 535 : | |||
| 536 : | if(use_assembler) | ||
| 537 : | #ifdef ARCH_IA64 | ||
| 538 : | xinit.cpu_flags = XVID_CPU_FORCE | XVID_CPU_IA64; | ||
| 539 : | #else | ||
| 540 : | xinit.cpu_flags = 0; | ||
| 541 : | #endif | ||
| 542 : | else | ||
| 543 : | xinit.cpu_flags = XVID_CPU_FORCE; | ||
| 544 : | |||
| 545 : | xvid_init(NULL, 0, &xinit, NULL); | ||
| 546 : | xparam.width = XDIM; | ||
| 547 : | xparam.height = YDIM; | ||
| 548 : | |||
| 549 : | xerr = xvid_decore(NULL, XVID_DEC_CREATE, &xparam, NULL); | ||
| 550 : | edgomez | 783 | |
| 551 : | chl | 376 | dec_handle = xparam.handle; |
| 552 : | |||
| 553 : | return xerr; | ||
| 554 : | } | ||
| 555 : | |||
| 556 : | edgomez | 780 | /* decode one frame */ |
| 557 : | static int | ||
| 558 : | dec_main(unsigned char *istream, | ||
| 559 : | edgomez | 783 | unsigned char *ostream, |
| 560 : | int istream_size, | ||
| 561 : | int *ostream_size) | ||
| 562 : | edgomez | 780 | { |
| 563 : | chl | 376 | |
| 564 : | int xerr; | ||
| 565 : | XVID_DEC_FRAME xframe; | ||
| 566 : | |||
| 567 : | edgomez | 780 | xframe.bitstream = istream; |
| 568 : | xframe.length = istream_size; | ||
| 569 : | edgomez | 783 | xframe.image = ostream; |
| 570 : | chl | 376 | xframe.stride = XDIM; |
| 571 : | edgomez | 783 | xframe.colorspace = XVID_CSP_YV12; |
| 572 : | chl | 376 | |
| 573 : | edgomez | 783 | xerr = xvid_decore(dec_handle, XVID_DEC_DECODE, &xframe, NULL); |
| 574 : | chl | 376 | |
| 575 : | edgomez | 783 | *ostream_size = xframe.length; |
| 576 : | chl | 376 | |
| 577 : | return xerr; | ||
| 578 : | } | ||
| 579 : | |||
| 580 : | edgomez | 780 | /* close decoder to release resources */ |
| 581 : | static int | ||
| 582 : | dec_stop() | ||
| 583 : | chl | 376 | { |
| 584 : | int xerr; | ||
| 585 : | edgomez | 780 | |
| 586 : | chl | 376 | xerr = xvid_decore(dec_handle, XVID_DEC_DESTROY, NULL, NULL); |
| 587 : | |||
| 588 : | return xerr; | ||
| 589 : | } |
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