7c1a7aea2a858940c674d02fdca9ddfb49a8cf93
[libav.git] / libavcodec / utils.c
1 /*
2 * utils for libavcodec
3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav 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 GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * utils.
26 */
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/audioconvert.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/samplefmt.h"
35 #include "libavutil/dict.h"
36 #include "avcodec.h"
37 #include "dsputil.h"
38 #include "libavutil/opt.h"
39 #include "imgconvert.h"
40 #include "thread.h"
41 #include "audioconvert.h"
42 #include "internal.h"
43 #include "bytestream.h"
44 #include <stdlib.h>
45 #include <stdarg.h>
46 #include <limits.h>
47 #include <float.h>
48
49 static int volatile entangled_thread_counter=0;
50 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
51 static void *codec_mutex;
52 static void *avformat_mutex;
53
54 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
55 {
56 if(min_size < *size)
57 return ptr;
58
59 min_size= FFMAX(17*min_size/16 + 32, min_size);
60
61 ptr= av_realloc(ptr, min_size);
62 if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now
63 min_size= 0;
64
65 *size= min_size;
66
67 return ptr;
68 }
69
70 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
71 {
72 void **p = ptr;
73 if (min_size < *size)
74 return;
75 min_size= FFMAX(17*min_size/16 + 32, min_size);
76 av_free(*p);
77 *p = av_malloc(min_size);
78 if (!*p) min_size = 0;
79 *size= min_size;
80 }
81
82 /* encoder management */
83 static AVCodec *first_avcodec = NULL;
84
85 AVCodec *av_codec_next(AVCodec *c){
86 if(c) return c->next;
87 else return first_avcodec;
88 }
89
90 #if !FF_API_AVCODEC_INIT
91 static
92 #endif
93 void avcodec_init(void)
94 {
95 static int initialized = 0;
96
97 if (initialized != 0)
98 return;
99 initialized = 1;
100
101 dsputil_static_init();
102 }
103
104 void avcodec_register(AVCodec *codec)
105 {
106 AVCodec **p;
107 avcodec_init();
108 p = &first_avcodec;
109 while (*p != NULL) p = &(*p)->next;
110 *p = codec;
111 codec->next = NULL;
112
113 if (codec->init_static_data)
114 codec->init_static_data(codec);
115 }
116
117 unsigned avcodec_get_edge_width(void)
118 {
119 return EDGE_WIDTH;
120 }
121
122 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
123 s->coded_width = width;
124 s->coded_height= height;
125 s->width = -((-width )>>s->lowres);
126 s->height= -((-height)>>s->lowres);
127 }
128
129 #define INTERNAL_BUFFER_SIZE (32+1)
130
131 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
132 int linesize_align[AV_NUM_DATA_POINTERS])
133 {
134 int i;
135 int w_align= 1;
136 int h_align= 1;
137
138 switch(s->pix_fmt){
139 case PIX_FMT_YUV420P:
140 case PIX_FMT_YUYV422:
141 case PIX_FMT_UYVY422:
142 case PIX_FMT_YUV422P:
143 case PIX_FMT_YUV440P:
144 case PIX_FMT_YUV444P:
145 case PIX_FMT_GBRP:
146 case PIX_FMT_GRAY8:
147 case PIX_FMT_GRAY16BE:
148 case PIX_FMT_GRAY16LE:
149 case PIX_FMT_YUVJ420P:
150 case PIX_FMT_YUVJ422P:
151 case PIX_FMT_YUVJ440P:
152 case PIX_FMT_YUVJ444P:
153 case PIX_FMT_YUVA420P:
154 case PIX_FMT_YUV420P9LE:
155 case PIX_FMT_YUV420P9BE:
156 case PIX_FMT_YUV420P10LE:
157 case PIX_FMT_YUV420P10BE:
158 case PIX_FMT_YUV422P9LE:
159 case PIX_FMT_YUV422P9BE:
160 case PIX_FMT_YUV422P10LE:
161 case PIX_FMT_YUV422P10BE:
162 case PIX_FMT_YUV444P9LE:
163 case PIX_FMT_YUV444P9BE:
164 case PIX_FMT_YUV444P10LE:
165 case PIX_FMT_YUV444P10BE:
166 case PIX_FMT_GBRP9LE:
167 case PIX_FMT_GBRP9BE:
168 case PIX_FMT_GBRP10LE:
169 case PIX_FMT_GBRP10BE:
170 w_align = 16; //FIXME assume 16 pixel per macroblock
171 h_align = 16 * 2; // interlaced needs 2 macroblocks height
172 break;
173 case PIX_FMT_YUV411P:
174 case PIX_FMT_UYYVYY411:
175 w_align=32;
176 h_align=8;
177 break;
178 case PIX_FMT_YUV410P:
179 if(s->codec_id == CODEC_ID_SVQ1){
180 w_align=64;
181 h_align=64;
182 }
183 case PIX_FMT_RGB555:
184 if(s->codec_id == CODEC_ID_RPZA){
185 w_align=4;
186 h_align=4;
187 }
188 case PIX_FMT_PAL8:
189 case PIX_FMT_BGR8:
190 case PIX_FMT_RGB8:
191 if(s->codec_id == CODEC_ID_SMC){
192 w_align=4;
193 h_align=4;
194 }
195 break;
196 case PIX_FMT_BGR24:
197 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
198 w_align=4;
199 h_align=4;
200 }
201 break;
202 default:
203 w_align= 1;
204 h_align= 1;
205 break;
206 }
207
208 *width = FFALIGN(*width , w_align);
209 *height= FFALIGN(*height, h_align);
210 if(s->codec_id == CODEC_ID_H264 || s->lowres)
211 *height+=2; // some of the optimized chroma MC reads one line too much
212 // which is also done in mpeg decoders with lowres > 0
213
214 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
215 linesize_align[i] = STRIDE_ALIGN;
216 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
217 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
218 //picture size unneccessarily in some cases. The solution here is not
219 //pretty and better ideas are welcome!
220 #if HAVE_MMX
221 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
222 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
223 s->codec_id == CODEC_ID_VP6A) {
224 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
225 linesize_align[i] = 16;
226 }
227 #endif
228 }
229
230 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
231 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
232 int linesize_align[AV_NUM_DATA_POINTERS];
233 int align;
234 avcodec_align_dimensions2(s, width, height, linesize_align);
235 align = FFMAX(linesize_align[0], linesize_align[3]);
236 linesize_align[1] <<= chroma_shift;
237 linesize_align[2] <<= chroma_shift;
238 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
239 *width=FFALIGN(*width, align);
240 }
241
242 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
243 {
244 AVCodecInternal *avci = avctx->internal;
245 InternalBuffer *buf;
246 int buf_size, ret, i, needs_extended_data;
247
248 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
249 frame->nb_samples, avctx->sample_fmt,
250 32);
251 if (buf_size < 0)
252 return AVERROR(EINVAL);
253
254 needs_extended_data = av_sample_fmt_is_planar(avctx->sample_fmt) &&
255 avctx->channels > AV_NUM_DATA_POINTERS;
256
257 /* allocate InternalBuffer if needed */
258 if (!avci->buffer) {
259 avci->buffer = av_mallocz(sizeof(InternalBuffer));
260 if (!avci->buffer)
261 return AVERROR(ENOMEM);
262 }
263 buf = avci->buffer;
264
265 /* if there is a previously-used internal buffer, check its size and
266 channel count to see if we can reuse it */
267 if (buf->extended_data) {
268 /* if current buffer is too small, free it */
269 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
270 av_free(buf->extended_data[0]);
271 if (buf->extended_data != buf->data)
272 av_free(&buf->extended_data);
273 buf->extended_data = NULL;
274 buf->data[0] = NULL;
275 }
276 /* if number of channels has changed, reset and/or free extended data
277 pointers but leave data buffer in buf->data[0] for reuse */
278 if (buf->nb_channels != avctx->channels) {
279 if (buf->extended_data != buf->data)
280 av_free(buf->extended_data);
281 buf->extended_data = NULL;
282 }
283 }
284
285 /* if there is no previous buffer or the previous buffer cannot be used
286 as-is, allocate a new buffer and/or rearrange the channel pointers */
287 if (!buf->extended_data) {
288 /* if the channel pointers will fit, just set extended_data to data,
289 otherwise allocate the extended_data channel pointers */
290 if (needs_extended_data) {
291 buf->extended_data = av_mallocz(avctx->channels *
292 sizeof(*buf->extended_data));
293 if (!buf->extended_data)
294 return AVERROR(ENOMEM);
295 } else {
296 buf->extended_data = buf->data;
297 }
298
299 /* if there is a previous buffer and it is large enough, reuse it and
300 just fill-in new channel pointers and linesize, otherwise allocate
301 a new buffer */
302 if (buf->extended_data[0]) {
303 ret = av_samples_fill_arrays(buf->extended_data, &buf->linesize[0],
304 buf->extended_data[0], avctx->channels,
305 frame->nb_samples, avctx->sample_fmt,
306 32);
307 } else {
308 ret = av_samples_alloc(buf->extended_data, &buf->linesize[0],
309 avctx->channels, frame->nb_samples,
310 avctx->sample_fmt, 32);
311 }
312 if (ret)
313 return ret;
314
315 /* if data was not used for extended_data, we need to copy as many of
316 the extended_data channel pointers as will fit */
317 if (needs_extended_data) {
318 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
319 buf->data[i] = buf->extended_data[i];
320 }
321 buf->audio_data_size = buf_size;
322 buf->nb_channels = avctx->channels;
323 }
324
325 /* copy InternalBuffer info to the AVFrame */
326 frame->type = FF_BUFFER_TYPE_INTERNAL;
327 frame->extended_data = buf->extended_data;
328 frame->linesize[0] = buf->linesize[0];
329 memcpy(frame->data, buf->data, sizeof(frame->data));
330
331 if (avctx->pkt) frame->pkt_pts = avctx->pkt->pts;
332 else frame->pkt_pts = AV_NOPTS_VALUE;
333 frame->reordered_opaque = avctx->reordered_opaque;
334
335 if (avctx->debug & FF_DEBUG_BUFFERS)
336 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
337 "internal audio buffer used\n", frame);
338
339 return 0;
340 }
341
342 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
343 {
344 int i;
345 int w= s->width;
346 int h= s->height;
347 InternalBuffer *buf;
348 AVCodecInternal *avci = s->internal;
349
350 if(pic->data[0]!=NULL) {
351 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
352 return -1;
353 }
354 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
355 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
356 return -1;
357 }
358
359 if(av_image_check_size(w, h, 0, s))
360 return -1;
361
362 if (!avci->buffer) {
363 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
364 sizeof(InternalBuffer));
365 }
366
367 buf = &avci->buffer[avci->buffer_count];
368
369 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
370 if(s->active_thread_type&FF_THREAD_FRAME) {
371 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
372 return -1;
373 }
374
375 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
376 av_freep(&buf->base[i]);
377 buf->data[i]= NULL;
378 }
379 }
380
381 if (!buf->base[0]) {
382 int h_chroma_shift, v_chroma_shift;
383 int size[4] = {0};
384 int tmpsize;
385 int unaligned;
386 AVPicture picture;
387 int stride_align[AV_NUM_DATA_POINTERS];
388 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
389
390 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
391
392 avcodec_align_dimensions2(s, &w, &h, stride_align);
393
394 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
395 w+= EDGE_WIDTH*2;
396 h+= EDGE_WIDTH*2;
397 }
398
399 do {
400 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
401 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
402 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
403 // increase alignment of w for next try (rhs gives the lowest bit set in w)
404 w += w & ~(w-1);
405
406 unaligned = 0;
407 for (i=0; i<4; i++){
408 unaligned |= picture.linesize[i] % stride_align[i];
409 }
410 } while (unaligned);
411
412 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
413 if (tmpsize < 0)
414 return -1;
415
416 for (i=0; i<3 && picture.data[i+1]; i++)
417 size[i] = picture.data[i+1] - picture.data[i];
418 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
419
420 memset(buf->base, 0, sizeof(buf->base));
421 memset(buf->data, 0, sizeof(buf->data));
422
423 for(i=0; i<4 && size[i]; i++){
424 const int h_shift= i==0 ? 0 : h_chroma_shift;
425 const int v_shift= i==0 ? 0 : v_chroma_shift;
426
427 buf->linesize[i]= picture.linesize[i];
428
429 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
430 if(buf->base[i]==NULL) return -1;
431 memset(buf->base[i], 128, size[i]);
432
433 // no edge if EDGE EMU or not planar YUV
434 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
435 buf->data[i] = buf->base[i];
436 else
437 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
438 }
439 for (; i < AV_NUM_DATA_POINTERS; i++) {
440 buf->base[i] = buf->data[i] = NULL;
441 buf->linesize[i] = 0;
442 }
443 if(size[1] && !size[2])
444 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
445 buf->width = s->width;
446 buf->height = s->height;
447 buf->pix_fmt= s->pix_fmt;
448 }
449 pic->type= FF_BUFFER_TYPE_INTERNAL;
450
451 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
452 pic->base[i]= buf->base[i];
453 pic->data[i]= buf->data[i];
454 pic->linesize[i]= buf->linesize[i];
455 }
456 pic->extended_data = pic->data;
457 avci->buffer_count++;
458
459 if(s->pkt) pic->pkt_pts= s->pkt->pts;
460 else pic->pkt_pts= AV_NOPTS_VALUE;
461 pic->reordered_opaque= s->reordered_opaque;
462
463 if(s->debug&FF_DEBUG_BUFFERS)
464 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
465 "buffers used\n", pic, avci->buffer_count);
466
467 return 0;
468 }
469
470 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
471 {
472 switch (avctx->codec_type) {
473 case AVMEDIA_TYPE_VIDEO:
474 return video_get_buffer(avctx, frame);
475 case AVMEDIA_TYPE_AUDIO:
476 return audio_get_buffer(avctx, frame);
477 default:
478 return -1;
479 }
480 }
481
482 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
483 int i;
484 InternalBuffer *buf, *last;
485 AVCodecInternal *avci = s->internal;
486
487 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
488
489 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
490 assert(avci->buffer_count);
491
492 if (avci->buffer) {
493 buf = NULL; /* avoids warning */
494 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
495 buf = &avci->buffer[i];
496 if (buf->data[0] == pic->data[0])
497 break;
498 }
499 assert(i < avci->buffer_count);
500 avci->buffer_count--;
501 last = &avci->buffer[avci->buffer_count];
502
503 if (buf != last)
504 FFSWAP(InternalBuffer, *buf, *last);
505 }
506
507 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
508 pic->data[i]=NULL;
509 // pic->base[i]=NULL;
510 }
511 //printf("R%X\n", pic->opaque);
512
513 if(s->debug&FF_DEBUG_BUFFERS)
514 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
515 "buffers used\n", pic, avci->buffer_count);
516 }
517
518 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
519 AVFrame temp_pic;
520 int i;
521
522 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
523
524 /* If no picture return a new buffer */
525 if(pic->data[0] == NULL) {
526 /* We will copy from buffer, so must be readable */
527 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
528 return s->get_buffer(s, pic);
529 }
530
531 /* If internal buffer type return the same buffer */
532 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
533 if(s->pkt) pic->pkt_pts= s->pkt->pts;
534 else pic->pkt_pts= AV_NOPTS_VALUE;
535 pic->reordered_opaque= s->reordered_opaque;
536 return 0;
537 }
538
539 /*
540 * Not internal type and reget_buffer not overridden, emulate cr buffer
541 */
542 temp_pic = *pic;
543 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
544 pic->data[i] = pic->base[i] = NULL;
545 pic->opaque = NULL;
546 /* Allocate new frame */
547 if (s->get_buffer(s, pic))
548 return -1;
549 /* Copy image data from old buffer to new buffer */
550 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
551 s->height);
552 s->release_buffer(s, &temp_pic); // Release old frame
553 return 0;
554 }
555
556 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
557 int i;
558
559 for(i=0; i<count; i++){
560 int r= func(c, (char*)arg + i*size);
561 if(ret) ret[i]= r;
562 }
563 return 0;
564 }
565
566 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
567 int i;
568
569 for(i=0; i<count; i++){
570 int r= func(c, arg, i, 0);
571 if(ret) ret[i]= r;
572 }
573 return 0;
574 }
575
576 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
577 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
578 ++fmt;
579 return fmt[0];
580 }
581
582 void avcodec_get_frame_defaults(AVFrame *pic){
583 memset(pic, 0, sizeof(AVFrame));
584
585 pic->pts= AV_NOPTS_VALUE;
586 pic->key_frame= 1;
587 pic->sample_aspect_ratio = (AVRational){0, 1};
588 }
589
590 AVFrame *avcodec_alloc_frame(void){
591 AVFrame *pic= av_malloc(sizeof(AVFrame));
592
593 if(pic==NULL) return NULL;
594
595 avcodec_get_frame_defaults(pic);
596
597 return pic;
598 }
599
600 #if FF_API_AVCODEC_OPEN
601 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
602 {
603 return avcodec_open2(avctx, codec, NULL);
604 }
605 #endif
606
607 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
608 {
609 int ret = 0;
610 AVDictionary *tmp = NULL;
611
612 if (options)
613 av_dict_copy(&tmp, *options, 0);
614
615 /* If there is a user-supplied mutex locking routine, call it. */
616 if (ff_lockmgr_cb) {
617 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
618 return -1;
619 }
620
621 entangled_thread_counter++;
622 if(entangled_thread_counter != 1){
623 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
624 ret = -1;
625 goto end;
626 }
627
628 if(avctx->codec || !codec) {
629 ret = AVERROR(EINVAL);
630 goto end;
631 }
632
633 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
634 if (!avctx->internal) {
635 ret = AVERROR(ENOMEM);
636 goto end;
637 }
638
639 if (codec->priv_data_size > 0) {
640 if(!avctx->priv_data){
641 avctx->priv_data = av_mallocz(codec->priv_data_size);
642 if (!avctx->priv_data) {
643 ret = AVERROR(ENOMEM);
644 goto end;
645 }
646 if (codec->priv_class) {
647 *(AVClass**)avctx->priv_data= codec->priv_class;
648 av_opt_set_defaults(avctx->priv_data);
649 }
650 }
651 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
652 goto free_and_end;
653 } else {
654 avctx->priv_data = NULL;
655 }
656 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
657 goto free_and_end;
658
659 if(avctx->coded_width && avctx->coded_height)
660 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
661 else if(avctx->width && avctx->height)
662 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
663
664 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
665 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
666 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
667 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
668 avcodec_set_dimensions(avctx, 0, 0);
669 }
670
671 /* if the decoder init function was already called previously,
672 free the already allocated subtitle_header before overwriting it */
673 if (codec->decode)
674 av_freep(&avctx->subtitle_header);
675
676 #define SANE_NB_CHANNELS 128U
677 if (avctx->channels > SANE_NB_CHANNELS) {
678 ret = AVERROR(EINVAL);
679 goto free_and_end;
680 }
681
682 avctx->codec = codec;
683 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
684 avctx->codec_id == CODEC_ID_NONE) {
685 avctx->codec_type = codec->type;
686 avctx->codec_id = codec->id;
687 }
688 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
689 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
690 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
691 ret = AVERROR(EINVAL);
692 goto free_and_end;
693 }
694 avctx->frame_number = 0;
695 #if FF_API_ER
696
697 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition separate: %d; %d\n",
698 avctx->error_recognition, avctx->err_recognition);
699 /* FF_ER_CAREFUL (==1) implies AV_EF_CRCCHECK (== 1<<1 - 1),
700 FF_ER_COMPLIANT (==2) implies AV_EF_{CRCCHECK,BITSTREAM} (== 1<<2 - 1), et cetera} */
701 avctx->err_recognition |= (1<<(avctx->error_recognition-(avctx->error_recognition>=FF_ER_VERY_AGGRESSIVE))) - 1;
702 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition combined: %d; %d\n",
703 avctx->error_recognition, avctx->err_recognition);
704 #endif
705
706 if (HAVE_THREADS && !avctx->thread_opaque) {
707 ret = ff_thread_init(avctx);
708 if (ret < 0) {
709 goto free_and_end;
710 }
711 }
712
713 if (avctx->codec->max_lowres < avctx->lowres) {
714 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
715 avctx->codec->max_lowres);
716 ret = AVERROR(EINVAL);
717 goto free_and_end;
718 }
719 if (avctx->codec->encode) {
720 int i;
721 if (avctx->codec->sample_fmts) {
722 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
723 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
724 break;
725 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
726 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
727 ret = AVERROR(EINVAL);
728 goto free_and_end;
729 }
730 }
731 if (avctx->codec->supported_samplerates) {
732 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
733 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
734 break;
735 if (avctx->codec->supported_samplerates[i] == 0) {
736 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
737 ret = AVERROR(EINVAL);
738 goto free_and_end;
739 }
740 }
741 if (avctx->codec->channel_layouts) {
742 if (!avctx->channel_layout) {
743 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
744 } else {
745 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
746 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
747 break;
748 if (avctx->codec->channel_layouts[i] == 0) {
749 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
750 ret = AVERROR(EINVAL);
751 goto free_and_end;
752 }
753 }
754 }
755 if (avctx->channel_layout && avctx->channels) {
756 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
757 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
758 ret = AVERROR(EINVAL);
759 goto free_and_end;
760 }
761 } else if (avctx->channel_layout) {
762 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
763 }
764 }
765
766 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
767 ret = avctx->codec->init(avctx);
768 if (ret < 0) {
769 goto free_and_end;
770 }
771 }
772 end:
773 entangled_thread_counter--;
774
775 /* Release any user-supplied mutex. */
776 if (ff_lockmgr_cb) {
777 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
778 }
779 if (options) {
780 av_dict_free(options);
781 *options = tmp;
782 }
783
784 return ret;
785 free_and_end:
786 av_dict_free(&tmp);
787 av_freep(&avctx->priv_data);
788 av_freep(&avctx->internal);
789 avctx->codec= NULL;
790 goto end;
791 }
792
793 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
794 const short *samples)
795 {
796 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
797 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
798 return -1;
799 }
800 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
801 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
802 avctx->frame_number++;
803 return ret;
804 }else
805 return 0;
806 }
807
808 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
809 const AVFrame *pict)
810 {
811 if(buf_size < FF_MIN_BUFFER_SIZE){
812 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
813 return -1;
814 }
815 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
816 return -1;
817 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
818 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
819 avctx->frame_number++;
820 emms_c(); //needed to avoid an emms_c() call before every return;
821
822 return ret;
823 }else
824 return 0;
825 }
826
827 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
828 const AVSubtitle *sub)
829 {
830 int ret;
831 if(sub->start_display_time) {
832 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
833 return -1;
834 }
835 if(sub->num_rects == 0 || !sub->rects)
836 return -1;
837 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
838 avctx->frame_number++;
839 return ret;
840 }
841
842 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
843 int *got_picture_ptr,
844 AVPacket *avpkt)
845 {
846 int ret;
847
848 *got_picture_ptr= 0;
849 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
850 return -1;
851
852 avctx->pkt = avpkt;
853
854 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
855 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
856 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
857 avpkt);
858 else {
859 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
860 avpkt);
861 picture->pkt_dts= avpkt->dts;
862 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
863 }
864
865 emms_c(); //needed to avoid an emms_c() call before every return;
866
867 if (*got_picture_ptr)
868 avctx->frame_number++;
869 }else
870 ret= 0;
871
872 return ret;
873 }
874
875 #if FF_API_OLD_DECODE_AUDIO
876 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
877 int *frame_size_ptr,
878 AVPacket *avpkt)
879 {
880 AVFrame frame;
881 int ret, got_frame = 0;
882
883 if (avctx->get_buffer != avcodec_default_get_buffer) {
884 av_log(avctx, AV_LOG_ERROR, "A custom get_buffer() cannot be used with "
885 "avcodec_decode_audio3()\n");
886 return AVERROR(EINVAL);
887 }
888
889 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
890
891 if (ret >= 0 && got_frame) {
892 int ch, plane_size;
893 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
894 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
895 frame.nb_samples,
896 avctx->sample_fmt, 1);
897 if (*frame_size_ptr < data_size) {
898 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
899 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
900 return AVERROR(EINVAL);
901 }
902
903 memcpy(samples, frame.extended_data[0], plane_size);
904
905 if (planar && avctx->channels > 1) {
906 uint8_t *out = ((uint8_t *)samples) + plane_size;
907 for (ch = 1; ch < avctx->channels; ch++) {
908 memcpy(out, frame.extended_data[ch], plane_size);
909 out += plane_size;
910 }
911 }
912 *frame_size_ptr = data_size;
913 } else {
914 *frame_size_ptr = 0;
915 }
916 return ret;
917 }
918 #endif
919
920 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
921 {
922 int size = 0;
923 const uint8_t *data;
924 uint32_t flags;
925
926 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
927 return;
928
929 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
930 if (!data || size < 4)
931 return;
932 flags = bytestream_get_le32(&data);
933 size -= 4;
934 if (size < 4) /* Required for any of the changes */
935 return;
936 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
937 avctx->channels = bytestream_get_le32(&data);
938 size -= 4;
939 }
940 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
941 if (size < 8)
942 return;
943 avctx->channel_layout = bytestream_get_le64(&data);
944 size -= 8;
945 }
946 if (size < 4)
947 return;
948 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
949 avctx->sample_rate = bytestream_get_le32(&data);
950 size -= 4;
951 }
952 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
953 if (size < 8)
954 return;
955 avctx->width = bytestream_get_le32(&data);
956 avctx->height = bytestream_get_le32(&data);
957 size -= 8;
958 }
959 }
960
961 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
962 AVFrame *frame,
963 int *got_frame_ptr,
964 AVPacket *avpkt)
965 {
966 int ret = 0;
967
968 *got_frame_ptr = 0;
969
970 avctx->pkt = avpkt;
971
972 if (!avpkt->data && avpkt->size) {
973 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
974 return AVERROR(EINVAL);
975 }
976
977 apply_param_change(avctx, avpkt);
978
979 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
980 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
981 if (ret >= 0 && *got_frame_ptr) {
982 avctx->frame_number++;
983 frame->pkt_dts = avpkt->dts;
984 }
985 }
986 return ret;
987 }
988
989 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
990 int *got_sub_ptr,
991 AVPacket *avpkt)
992 {
993 int ret;
994
995 avctx->pkt = avpkt;
996 *got_sub_ptr = 0;
997 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
998 if (*got_sub_ptr)
999 avctx->frame_number++;
1000 return ret;
1001 }
1002
1003 void avsubtitle_free(AVSubtitle *sub)
1004 {
1005 int i;
1006
1007 for (i = 0; i < sub->num_rects; i++)
1008 {
1009 av_freep(&sub->rects[i]->pict.data[0]);
1010 av_freep(&sub->rects[i]->pict.data[1]);
1011 av_freep(&sub->rects[i]->pict.data[2]);
1012 av_freep(&sub->rects[i]->pict.data[3]);
1013 av_freep(&sub->rects[i]->text);
1014 av_freep(&sub->rects[i]->ass);
1015 av_freep(&sub->rects[i]);
1016 }
1017
1018 av_freep(&sub->rects);
1019
1020 memset(sub, 0, sizeof(AVSubtitle));
1021 }
1022
1023 av_cold int avcodec_close(AVCodecContext *avctx)
1024 {
1025 /* If there is a user-supplied mutex locking routine, call it. */
1026 if (ff_lockmgr_cb) {
1027 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1028 return -1;
1029 }
1030
1031 entangled_thread_counter++;
1032 if(entangled_thread_counter != 1){
1033 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1034 entangled_thread_counter--;
1035 return -1;
1036 }
1037
1038 if (HAVE_THREADS && avctx->thread_opaque)
1039 ff_thread_free(avctx);
1040 if (avctx->codec && avctx->codec->close)
1041 avctx->codec->close(avctx);
1042 avcodec_default_free_buffers(avctx);
1043 avctx->coded_frame = NULL;
1044 av_freep(&avctx->internal);
1045 if (avctx->codec && avctx->codec->priv_class)
1046 av_opt_free(avctx->priv_data);
1047 av_opt_free(avctx);
1048 av_freep(&avctx->priv_data);
1049 if(avctx->codec && avctx->codec->encode)
1050 av_freep(&avctx->extradata);
1051 avctx->codec = NULL;
1052 avctx->active_thread_type = 0;
1053 entangled_thread_counter--;
1054
1055 /* Release any user-supplied mutex. */
1056 if (ff_lockmgr_cb) {
1057 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1058 }
1059 return 0;
1060 }
1061
1062 AVCodec *avcodec_find_encoder(enum CodecID id)
1063 {
1064 AVCodec *p, *experimental=NULL;
1065 p = first_avcodec;
1066 while (p) {
1067 if (p->encode != NULL && p->id == id) {
1068 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1069 experimental = p;
1070 } else
1071 return p;
1072 }
1073 p = p->next;
1074 }
1075 return experimental;
1076 }
1077
1078 AVCodec *avcodec_find_encoder_by_name(const char *name)
1079 {
1080 AVCodec *p;
1081 if (!name)
1082 return NULL;
1083 p = first_avcodec;
1084 while (p) {
1085 if (p->encode != NULL && strcmp(name,p->name) == 0)
1086 return p;
1087 p = p->next;
1088 }
1089 return NULL;
1090 }
1091
1092 AVCodec *avcodec_find_decoder(enum CodecID id)
1093 {
1094 AVCodec *p;
1095 p = first_avcodec;
1096 while (p) {
1097 if (p->decode != NULL && p->id == id)
1098 return p;
1099 p = p->next;
1100 }
1101 return NULL;
1102 }
1103
1104 AVCodec *avcodec_find_decoder_by_name(const char *name)
1105 {
1106 AVCodec *p;
1107 if (!name)
1108 return NULL;
1109 p = first_avcodec;
1110 while (p) {
1111 if (p->decode != NULL && strcmp(name,p->name) == 0)
1112 return p;
1113 p = p->next;
1114 }
1115 return NULL;
1116 }
1117
1118 static int get_bit_rate(AVCodecContext *ctx)
1119 {
1120 int bit_rate;
1121 int bits_per_sample;
1122
1123 switch(ctx->codec_type) {
1124 case AVMEDIA_TYPE_VIDEO:
1125 case AVMEDIA_TYPE_DATA:
1126 case AVMEDIA_TYPE_SUBTITLE:
1127 case AVMEDIA_TYPE_ATTACHMENT:
1128 bit_rate = ctx->bit_rate;
1129 break;
1130 case AVMEDIA_TYPE_AUDIO:
1131 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1132 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1133 break;
1134 default:
1135 bit_rate = 0;
1136 break;
1137 }
1138 return bit_rate;
1139 }
1140
1141 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1142 {
1143 int i, len, ret = 0;
1144
1145 for (i = 0; i < 4; i++) {
1146 len = snprintf(buf, buf_size,
1147 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1148 buf += len;
1149 buf_size = buf_size > len ? buf_size - len : 0;
1150 ret += len;
1151 codec_tag>>=8;
1152 }
1153 return ret;
1154 }
1155
1156 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1157 {
1158 const char *codec_name;
1159 const char *profile = NULL;
1160 AVCodec *p;
1161 char buf1[32];
1162 int bitrate;
1163 AVRational display_aspect_ratio;
1164
1165 if (encode)
1166 p = avcodec_find_encoder(enc->codec_id);
1167 else
1168 p = avcodec_find_decoder(enc->codec_id);
1169
1170 if (p) {
1171 codec_name = p->name;
1172 profile = av_get_profile_name(p, enc->profile);
1173 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1174 /* fake mpeg2 transport stream codec (currently not
1175 registered) */
1176 codec_name = "mpeg2ts";
1177 } else if (enc->codec_name[0] != '\0') {
1178 codec_name = enc->codec_name;
1179 } else {
1180 /* output avi tags */
1181 char tag_buf[32];
1182 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1183 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1184 codec_name = buf1;
1185 }
1186
1187 switch(enc->codec_type) {
1188 case AVMEDIA_TYPE_VIDEO:
1189 snprintf(buf, buf_size,
1190 "Video: %s%s",
1191 codec_name, enc->mb_decision ? " (hq)" : "");
1192 if (profile)
1193 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1194 " (%s)", profile);
1195 if (enc->pix_fmt != PIX_FMT_NONE) {
1196 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1197 ", %s",
1198 av_get_pix_fmt_name(enc->pix_fmt));
1199 }
1200 if (enc->width) {
1201 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1202 ", %dx%d",
1203 enc->width, enc->height);
1204 if (enc->sample_aspect_ratio.num) {
1205 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1206 enc->width*enc->sample_aspect_ratio.num,
1207 enc->height*enc->sample_aspect_ratio.den,
1208 1024*1024);
1209 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1210 " [PAR %d:%d DAR %d:%d]",
1211 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1212 display_aspect_ratio.num, display_aspect_ratio.den);
1213 }
1214 if(av_log_get_level() >= AV_LOG_DEBUG){
1215 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1216 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1217 ", %d/%d",
1218 enc->time_base.num/g, enc->time_base.den/g);
1219 }
1220 }
1221 if (encode) {
1222 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1223 ", q=%d-%d", enc->qmin, enc->qmax);
1224 }
1225 break;
1226 case AVMEDIA_TYPE_AUDIO:
1227 snprintf(buf, buf_size,
1228 "Audio: %s",
1229 codec_name);
1230 if (profile)
1231 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1232 " (%s)", profile);
1233 if (enc->sample_rate) {
1234 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1235 ", %d Hz", enc->sample_rate);
1236 }
1237 av_strlcat(buf, ", ", buf_size);
1238 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1239 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1240 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1241 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1242 }
1243 break;
1244 case AVMEDIA_TYPE_DATA:
1245 snprintf(buf, buf_size, "Data: %s", codec_name);
1246 break;
1247 case AVMEDIA_TYPE_SUBTITLE:
1248 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1249 break;
1250 case AVMEDIA_TYPE_ATTACHMENT:
1251 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1252 break;
1253 default:
1254 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1255 return;
1256 }
1257 if (encode) {
1258 if (enc->flags & CODEC_FLAG_PASS1)
1259 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1260 ", pass 1");
1261 if (enc->flags & CODEC_FLAG_PASS2)
1262 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1263 ", pass 2");
1264 }
1265 bitrate = get_bit_rate(enc);
1266 if (bitrate != 0) {
1267 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1268 ", %d kb/s", bitrate / 1000);
1269 }
1270 }
1271
1272 const char *av_get_profile_name(const AVCodec *codec, int profile)
1273 {
1274 const AVProfile *p;
1275 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1276 return NULL;
1277
1278 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1279 if (p->profile == profile)
1280 return p->name;
1281
1282 return NULL;
1283 }
1284
1285 unsigned avcodec_version( void )
1286 {
1287 return LIBAVCODEC_VERSION_INT;
1288 }
1289
1290 const char *avcodec_configuration(void)
1291 {
1292 return LIBAV_CONFIGURATION;
1293 }
1294
1295 const char *avcodec_license(void)
1296 {
1297 #define LICENSE_PREFIX "libavcodec license: "
1298 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1299 }
1300
1301 void avcodec_flush_buffers(AVCodecContext *avctx)
1302 {
1303 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1304 ff_thread_flush(avctx);
1305 else if(avctx->codec->flush)
1306 avctx->codec->flush(avctx);
1307 }
1308
1309 static void video_free_buffers(AVCodecContext *s)
1310 {
1311 AVCodecInternal *avci = s->internal;
1312 int i, j;
1313
1314 if (!avci->buffer)
1315 return;
1316
1317 if (avci->buffer_count)
1318 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1319 avci->buffer_count);
1320 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1321 InternalBuffer *buf = &avci->buffer[i];
1322 for(j=0; j<4; j++){
1323 av_freep(&buf->base[j]);
1324 buf->data[j]= NULL;
1325 }
1326 }
1327 av_freep(&avci->buffer);
1328
1329 avci->buffer_count=0;
1330 }
1331
1332 static void audio_free_buffers(AVCodecContext *avctx)
1333 {
1334 AVCodecInternal *avci = avctx->internal;
1335 InternalBuffer *buf;
1336
1337 if (!avci->buffer)
1338 return;
1339 buf = avci->buffer;
1340
1341 if (buf->extended_data) {
1342 av_free(buf->extended_data[0]);
1343 if (buf->extended_data != buf->data)
1344 av_free(buf->extended_data);
1345 }
1346 av_freep(&avci->buffer);
1347 }
1348
1349 void avcodec_default_free_buffers(AVCodecContext *avctx)
1350 {
1351 switch (avctx->codec_type) {
1352 case AVMEDIA_TYPE_VIDEO:
1353 video_free_buffers(avctx);
1354 break;
1355 case AVMEDIA_TYPE_AUDIO:
1356 audio_free_buffers(avctx);
1357 break;
1358 default:
1359 break;
1360 }
1361 }
1362
1363 #if FF_API_OLD_FF_PICT_TYPES
1364 char av_get_pict_type_char(int pict_type){
1365 return av_get_picture_type_char(pict_type);
1366 }
1367 #endif
1368
1369 int av_get_bits_per_sample(enum CodecID codec_id){
1370 switch(codec_id){
1371 case CODEC_ID_ADPCM_SBPRO_2:
1372 return 2;
1373 case CODEC_ID_ADPCM_SBPRO_3:
1374 return 3;
1375 case CODEC_ID_ADPCM_SBPRO_4:
1376 case CODEC_ID_ADPCM_CT:
1377 case CODEC_ID_ADPCM_IMA_WAV:
1378 case CODEC_ID_ADPCM_IMA_QT:
1379 case CODEC_ID_ADPCM_SWF:
1380 case CODEC_ID_ADPCM_MS:
1381 case CODEC_ID_ADPCM_YAMAHA:
1382 case CODEC_ID_ADPCM_G722:
1383 return 4;
1384 case CODEC_ID_PCM_ALAW:
1385 case CODEC_ID_PCM_MULAW:
1386 case CODEC_ID_PCM_S8:
1387 case CODEC_ID_PCM_U8:
1388 case CODEC_ID_PCM_ZORK:
1389 return 8;
1390 case CODEC_ID_PCM_S16BE:
1391 case CODEC_ID_PCM_S16LE:
1392 case CODEC_ID_PCM_S16LE_PLANAR:
1393 case CODEC_ID_PCM_U16BE:
1394 case CODEC_ID_PCM_U16LE:
1395 return 16;
1396 case CODEC_ID_PCM_S24DAUD:
1397 case CODEC_ID_PCM_S24BE:
1398 case CODEC_ID_PCM_S24LE:
1399 case CODEC_ID_PCM_U24BE:
1400 case CODEC_ID_PCM_U24LE:
1401 return 24;
1402 case CODEC_ID_PCM_S32BE:
1403 case CODEC_ID_PCM_S32LE:
1404 case CODEC_ID_PCM_U32BE:
1405 case CODEC_ID_PCM_U32LE:
1406 case CODEC_ID_PCM_F32BE:
1407 case CODEC_ID_PCM_F32LE:
1408 return 32;
1409 case CODEC_ID_PCM_F64BE:
1410 case CODEC_ID_PCM_F64LE:
1411 return 64;
1412 default:
1413 return 0;
1414 }
1415 }
1416
1417 #if FF_API_OLD_SAMPLE_FMT
1418 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1419 return av_get_bytes_per_sample(sample_fmt) << 3;
1420 }
1421 #endif
1422
1423 #if !HAVE_THREADS
1424 int ff_thread_init(AVCodecContext *s){
1425 return -1;
1426 }
1427 #endif
1428
1429 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1430 {
1431 unsigned int n = 0;
1432
1433 while(v >= 0xff) {
1434 *s++ = 0xff;
1435 v -= 0xff;
1436 n++;
1437 }
1438 *s = v;
1439 n++;
1440 return n;
1441 }
1442
1443 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1444 int i;
1445 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1446 return i;
1447 }
1448
1449 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1450 {
1451 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1452 "version to the newest one from Git. If the problem still "
1453 "occurs, it means that your file has a feature which has not "
1454 "been implemented.\n", feature);
1455 if(want_sample)
1456 av_log_ask_for_sample(avc, NULL);
1457 }
1458
1459 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1460 {
1461 va_list argument_list;
1462
1463 va_start(argument_list, msg);
1464
1465 if (msg)
1466 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1467 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1468 "of this file to ftp://upload.libav.org/incoming/ "
1469 "and contact the libav-devel mailing list.\n");
1470
1471 va_end(argument_list);
1472 }
1473
1474 static AVHWAccel *first_hwaccel = NULL;
1475
1476 void av_register_hwaccel(AVHWAccel *hwaccel)
1477 {
1478 AVHWAccel **p = &first_hwaccel;
1479 while (*p)
1480 p = &(*p)->next;
1481 *p = hwaccel;
1482 hwaccel->next = NULL;
1483 }
1484
1485 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1486 {
1487 return hwaccel ? hwaccel->next : first_hwaccel;
1488 }
1489
1490 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1491 {
1492 AVHWAccel *hwaccel=NULL;
1493
1494 while((hwaccel= av_hwaccel_next(hwaccel))){
1495 if ( hwaccel->id == codec_id
1496 && hwaccel->pix_fmt == pix_fmt)
1497 return hwaccel;
1498 }
1499 return NULL;
1500 }
1501
1502 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1503 {
1504 if (ff_lockmgr_cb) {
1505 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1506 return -1;
1507 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1508 return -1;
1509 }
1510
1511 ff_lockmgr_cb = cb;
1512
1513 if (ff_lockmgr_cb) {
1514 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1515 return -1;
1516 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1517 return -1;
1518 }
1519 return 0;
1520 }
1521
1522 int avpriv_lock_avformat(void)
1523 {
1524 if (ff_lockmgr_cb) {
1525 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1526 return -1;
1527 }
1528 return 0;
1529 }
1530
1531 int avpriv_unlock_avformat(void)
1532 {
1533 if (ff_lockmgr_cb) {
1534 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1535 return -1;
1536 }
1537 return 0;
1538 }
1539
1540 unsigned int avpriv_toupper4(unsigned int x)
1541 {
1542 return toupper( x &0xFF)
1543 + (toupper((x>>8 )&0xFF)<<8 )
1544 + (toupper((x>>16)&0xFF)<<16)
1545 + (toupper((x>>24)&0xFF)<<24);
1546 }
1547
1548 #if !HAVE_THREADS
1549
1550 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1551 {
1552 f->owner = avctx;
1553 return avctx->get_buffer(avctx, f);
1554 }
1555
1556 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1557 {
1558 f->owner->release_buffer(f->owner, f);
1559 }
1560
1561 void ff_thread_finish_setup(AVCodecContext *avctx)
1562 {
1563 }
1564
1565 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1566 {
1567 }
1568
1569 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1570 {
1571 }
1572
1573 #endif
1574
1575 #if FF_API_THREAD_INIT
1576 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1577 {
1578 s->thread_count = thread_count;
1579 return ff_thread_init(s);
1580 }
1581 #endif
1582
1583 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1584 {
1585 if (codec_id <= CODEC_ID_NONE)
1586 return AVMEDIA_TYPE_UNKNOWN;
1587 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1588 return AVMEDIA_TYPE_VIDEO;
1589 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1590 return AVMEDIA_TYPE_AUDIO;
1591 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1592 return AVMEDIA_TYPE_SUBTITLE;
1593
1594 return AVMEDIA_TYPE_UNKNOWN;
1595 }