115 |
unsigned char *mp4_ptr = NULL; |
unsigned char *mp4_ptr = NULL; |
116 |
unsigned char *out_buffer = NULL; |
unsigned char *out_buffer = NULL; |
117 |
int bigendian = 0; |
int bigendian = 0; |
|
int still_left_in_packet; |
|
118 |
|
|
119 |
double totaldectime; |
double totaldectime; |
120 |
|
|
229 |
* Main loop |
* Main loop |
230 |
****************************************************************************/ |
****************************************************************************/ |
231 |
|
|
|
totalsize = LONG_PACK('M','P','4','U'); |
|
|
mp4_ptr = (unsigned char *)&totalsize; |
|
|
if(*mp4_ptr == 'M') |
|
|
bigendian = 1; |
|
|
else |
|
|
bigendian = 0; |
|
|
|
|
232 |
if(ARG_STREAMTYPE) { |
if(ARG_STREAMTYPE) { |
233 |
|
|
234 |
unsigned char header[4]; |
unsigned char header[4]; |
238 |
goto release_all; |
goto release_all; |
239 |
fread(header, 4, 1, in_file); |
fread(header, 4, 1, in_file); |
240 |
|
|
241 |
if(header[0] != 'M' || header[1] != 'P' || |
if(header[0] != '2' || header[1] != 'M' || |
242 |
header[2] != '4' || header[3] != 'U') { |
header[2] != 'O' || header[3] != 'G') { |
243 |
fprintf(stderr, "Error, this not a mp4u container file\n"); |
fprintf(stderr, "Error, this not a mp4u container file\n"); |
244 |
goto release_all; |
goto release_all; |
245 |
} |
} |
246 |
|
|
247 |
} |
} |
248 |
else { |
|
249 |
fread(mp4_buffer, BUFFER_SIZE, 1, in_file); |
totalsize = LONG_PACK('M','P','4','U'); |
250 |
} |
mp4_ptr = (unsigned char *)&totalsize; |
251 |
|
if(*mp4_ptr == 'M') |
252 |
|
bigendian = 1; |
253 |
|
else |
254 |
|
bigendian = 0; |
255 |
|
|
256 |
totaldectime = 0; |
totaldectime = 0; |
257 |
totalsize = 0; |
totalsize = 0; |
258 |
filenr = 0; |
filenr = 0; |
|
still_left_in_packet = 0; |
|
259 |
mp4_ptr = mp4_buffer; |
mp4_ptr = mp4_buffer; |
260 |
|
|
261 |
do { |
do { |
267 |
/* Read data from input file */ |
/* Read data from input file */ |
268 |
if(ARG_STREAMTYPE ) { |
if(ARG_STREAMTYPE ) { |
269 |
|
|
270 |
/* |
/* MP4U container */ |
|
* MP4U container |
|
|
* |
|
|
* When dealing with mp4u, we have to take care about PBB...B packets |
|
|
* generated with some XviD options. |
|
|
* |
|
|
* We use the still_left_in_packet variable to keep trace of how many |
|
|
* bytes we loaded at a time. |
|
|
*/ |
|
|
|
|
|
/* Still real frames in loaded packet ? */ |
|
|
if(still_left_in_packet < 7) { |
|
271 |
|
|
272 |
/* Read stream size first */ |
/* Read stream size first */ |
273 |
if(feof(in_file)) |
if(feof(in_file)) |
274 |
break; |
break; |
275 |
fread(&still_left_in_packet, sizeof(long), 1, in_file); |
fread(&mp4_size, sizeof(long), 1, in_file); |
276 |
|
|
277 |
/* Mp4U container is big endian */ |
if(bigendian) |
278 |
if(!bigendian) |
mp4_size = SWAP(mp4_size); |
|
mp4_size = SWAP(still_left_in_packet); |
|
279 |
|
|
280 |
/* Read mp4_size_bytes */ |
/* Read mp4_size_bytes */ |
281 |
if(feof(in_file)) |
if(feof(in_file)) |
282 |
break; |
break; |
283 |
fread(mp4_buffer, still_left_in_packet, 1, in_file); |
fread(mp4_buffer, mp4_size, 1, in_file); |
284 |
|
|
285 |
/* |
/* |
286 |
* When reading mp4u, we don't have to care about buffer |
* When reading mp4u, we don't have to care about buffer |
290 |
mp4_ptr = mp4_buffer; |
mp4_ptr = mp4_buffer; |
291 |
|
|
292 |
} |
} |
|
|
|
|
} |
|
293 |
else { |
else { |
294 |
|
|
295 |
/* |
/* Real raw stream */ |
|
* Real raw stream |
|
|
* |
|
|
* In raw stream mode,we don't have to care how many bytes there're |
|
|
* still in packet because we simply let the decore decode frames |
|
|
* without taking care of buffer overruns or underruns. |
|
|
* |
|
|
*/ |
|
|
still_left_in_packet = 0; |
|
296 |
|
|
297 |
/* buffer more than half empty -> Fill it */ |
/* buffer more than half empty -> Fill it */ |
298 |
if (mp4_ptr > mp4_buffer + BUFFER_SIZE/2) { |
if (mp4_ptr > mp4_buffer + BUFFER_SIZE/2) { |
308 |
/* read new data */ |
/* read new data */ |
309 |
if(feof(in_file)) |
if(feof(in_file)) |
310 |
break; |
break; |
|
|
|
311 |
fread(mp4_buffer + rest, BUFFER_SIZE - rest, 1, in_file); |
fread(mp4_buffer + rest, BUFFER_SIZE - rest, 1, in_file); |
|
|
|
312 |
} |
} |
313 |
|
|
314 |
} |
} |
315 |
|
|
|
/* The do loop is just to flush NVOPS */ |
|
|
do { |
|
|
|
|
316 |
/* Decode frame */ |
/* Decode frame */ |
317 |
dectime = msecond(); |
dectime = msecond(); |
318 |
status = dec_main(mp4_ptr, out_buffer, mp4_size, &used_bytes); |
status = dec_main(mp4_ptr, out_buffer, mp4_size, &used_bytes); |
327 |
* mp4_ptr = mp4_buffer for each frame |
* mp4_ptr = mp4_buffer for each frame |
328 |
*/ |
*/ |
329 |
mp4_ptr += used_bytes; |
mp4_ptr += used_bytes; |
|
still_left_in_packet -= used_bytes; |
|
330 |
|
|
331 |
/* Total size */ |
/* Updated data */ |
332 |
totalsize += used_bytes; |
totalsize += used_bytes; |
|
|
|
|
}while(used_bytes <= 7); /* <= 7 bytes is a NVOPS */ |
|
|
|
|
|
/* Updated data - Count only usefull decode time */ |
|
333 |
totaldectime += dectime; |
totaldectime += dectime; |
334 |
|
|
335 |
/* Prints some decoding stats */ |
/* Prints some decoding stats */ |
336 |
printf("Frame %5d: dectime =%6.1f ms length=%7d bytes \n", |
printf("Frame %5d: dectime =%6.1f ms length=%7d bytes \n", |
337 |
filenr, dectime, used_bytes); |
filenr, dectime, used_bytes); |
338 |
|
|
339 |
/* Save individual mpeg4 stream if required */ |
/* Save individual mpeg4 strean if required */ |
340 |
if (ARG_SAVEMPEGSTREAM) { |
if (ARG_SAVEMPEGSTREAM) { |
341 |
FILE *filehandle = NULL; |
FILE *filehandle = NULL; |
342 |
|
|
353 |
} |
} |
354 |
} |
} |
355 |
|
|
356 |
|
|
357 |
/* Save output frame if required */ |
/* Save output frame if required */ |
358 |
if (ARG_SAVEDECOUTPUT) { |
if (ARG_SAVEDECOUTPUT) { |
359 |
sprintf(filename, "%sdec%05d.pgm", filepath, filenr); |
sprintf(filename, "%sdec%05d.pgm", filepath, filenr); |
377 |
totaldectime /= filenr; |
totaldectime /= filenr; |
378 |
|
|
379 |
printf("Avg: dectime %5.2f ms, %5.2f fps, mp4 stream size =%d\n", |
printf("Avg: dectime %5.2f ms, %5.2f fps, mp4 stream size =%d\n", |
380 |
totaldectime, 1000/totaldectime, (int)totalsize); |
totaldectime, 1000/totaldectime, totalsize); |
381 |
|
|
382 |
/***************************************************************************** |
/***************************************************************************** |
383 |
* XviD PART Stop |
* XviD PART Stop |
384 |
****************************************************************************/ |
/****************************************************************************/ |
385 |
|
|
386 |
release_all: |
release_all: |
387 |
if (dec_handle) { |
if (dec_handle) { |
437 |
#endif |
#endif |
438 |
} |
} |
439 |
|
|
440 |
|
|
441 |
/***************************************************************************** |
/***************************************************************************** |
442 |
* output functions |
* output functions |
443 |
****************************************************************************/ |
****************************************************************************/ |
512 |
xparam.height = YDIM; |
xparam.height = YDIM; |
513 |
|
|
514 |
xerr = xvid_decore(NULL, XVID_DEC_CREATE, &xparam, NULL); |
xerr = xvid_decore(NULL, XVID_DEC_CREATE, &xparam, NULL); |
|
|
|
515 |
dec_handle = xparam.handle; |
dec_handle = xparam.handle; |
516 |
|
|
517 |
return xerr; |
return xerr; |