lavc: remove disabled FF_API_ER cruft.
[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/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/audioconvert.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/dict.h"
37 #include "avcodec.h"
38 #include "dsputil.h"
39 #include "libavutil/opt.h"
40 #include "imgconvert.h"
41 #include "thread.h"
42 #include "audioconvert.h"
43 #include "internal.h"
44 #include "bytestream.h"
45 #include <stdlib.h>
46 #include <stdarg.h>
47 #include <limits.h>
48 #include <float.h>
49
50 static int volatile entangled_thread_counter=0;
51 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
52 static void *codec_mutex;
53 static void *avformat_mutex;
54
55 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
56 {
57 if(min_size < *size)
58 return ptr;
59
60 min_size= FFMAX(17*min_size/16 + 32, min_size);
61
62 ptr= av_realloc(ptr, min_size);
63 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
64 min_size= 0;
65
66 *size= min_size;
67
68 return ptr;
69 }
70
71 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
72 {
73 void **p = ptr;
74 if (min_size < *size)
75 return;
76 min_size= FFMAX(17*min_size/16 + 32, min_size);
77 av_free(*p);
78 *p = av_malloc(min_size);
79 if (!*p) min_size = 0;
80 *size= min_size;
81 }
82
83 /* encoder management */
84 static AVCodec *first_avcodec = NULL;
85
86 AVCodec *av_codec_next(AVCodec *c){
87 if(c) return c->next;
88 else return first_avcodec;
89 }
90
91 #if !FF_API_AVCODEC_INIT
92 static
93 #endif
94 void avcodec_init(void)
95 {
96 static int initialized = 0;
97
98 if (initialized != 0)
99 return;
100 initialized = 1;
101
102 dsputil_static_init();
103 }
104
105 static av_always_inline int codec_is_encoder(AVCodec *codec)
106 {
107 return codec && (codec->encode || codec->encode2);
108 }
109
110 static av_always_inline int codec_is_decoder(AVCodec *codec)
111 {
112 return codec && codec->decode;
113 }
114
115 void avcodec_register(AVCodec *codec)
116 {
117 AVCodec **p;
118 avcodec_init();
119 p = &first_avcodec;
120 while (*p != NULL) p = &(*p)->next;
121 *p = codec;
122 codec->next = NULL;
123
124 if (codec->init_static_data)
125 codec->init_static_data(codec);
126 }
127
128 unsigned avcodec_get_edge_width(void)
129 {
130 return EDGE_WIDTH;
131 }
132
133 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
134 s->coded_width = width;
135 s->coded_height= height;
136 s->width = -((-width )>>s->lowres);
137 s->height= -((-height)>>s->lowres);
138 }
139
140 #define INTERNAL_BUFFER_SIZE (32+1)
141
142 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
143 int linesize_align[AV_NUM_DATA_POINTERS])
144 {
145 int i;
146 int w_align= 1;
147 int h_align= 1;
148
149 switch(s->pix_fmt){
150 case PIX_FMT_YUV420P:
151 case PIX_FMT_YUYV422:
152 case PIX_FMT_UYVY422:
153 case PIX_FMT_YUV422P:
154 case PIX_FMT_YUV440P:
155 case PIX_FMT_YUV444P:
156 case PIX_FMT_GBRP:
157 case PIX_FMT_GRAY8:
158 case PIX_FMT_GRAY16BE:
159 case PIX_FMT_GRAY16LE:
160 case PIX_FMT_YUVJ420P:
161 case PIX_FMT_YUVJ422P:
162 case PIX_FMT_YUVJ440P:
163 case PIX_FMT_YUVJ444P:
164 case PIX_FMT_YUVA420P:
165 case PIX_FMT_YUV420P9LE:
166 case PIX_FMT_YUV420P9BE:
167 case PIX_FMT_YUV420P10LE:
168 case PIX_FMT_YUV420P10BE:
169 case PIX_FMT_YUV422P9LE:
170 case PIX_FMT_YUV422P9BE:
171 case PIX_FMT_YUV422P10LE:
172 case PIX_FMT_YUV422P10BE:
173 case PIX_FMT_YUV444P9LE:
174 case PIX_FMT_YUV444P9BE:
175 case PIX_FMT_YUV444P10LE:
176 case PIX_FMT_YUV444P10BE:
177 case PIX_FMT_GBRP9LE:
178 case PIX_FMT_GBRP9BE:
179 case PIX_FMT_GBRP10LE:
180 case PIX_FMT_GBRP10BE:
181 w_align = 16; //FIXME assume 16 pixel per macroblock
182 h_align = 16 * 2; // interlaced needs 2 macroblocks height
183 break;
184 case PIX_FMT_YUV411P:
185 case PIX_FMT_UYYVYY411:
186 w_align=32;
187 h_align=8;
188 break;
189 case PIX_FMT_YUV410P:
190 if(s->codec_id == CODEC_ID_SVQ1){
191 w_align=64;
192 h_align=64;
193 }
194 case PIX_FMT_RGB555:
195 if(s->codec_id == CODEC_ID_RPZA){
196 w_align=4;
197 h_align=4;
198 }
199 case PIX_FMT_PAL8:
200 case PIX_FMT_BGR8:
201 case PIX_FMT_RGB8:
202 if(s->codec_id == CODEC_ID_SMC){
203 w_align=4;
204 h_align=4;
205 }
206 break;
207 case PIX_FMT_BGR24:
208 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
209 w_align=4;
210 h_align=4;
211 }
212 break;
213 default:
214 w_align= 1;
215 h_align= 1;
216 break;
217 }
218
219 *width = FFALIGN(*width , w_align);
220 *height= FFALIGN(*height, h_align);
221 if(s->codec_id == CODEC_ID_H264 || s->lowres)
222 *height+=2; // some of the optimized chroma MC reads one line too much
223 // which is also done in mpeg decoders with lowres > 0
224
225 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
226 linesize_align[i] = STRIDE_ALIGN;
227 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
228 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
229 //picture size unneccessarily in some cases. The solution here is not
230 //pretty and better ideas are welcome!
231 #if HAVE_MMX
232 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
233 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
234 s->codec_id == CODEC_ID_VP6A) {
235 for (i = 0; i < AV_NUM_DATA_POINTERS; i++)
236 linesize_align[i] = 16;
237 }
238 #endif
239 }
240
241 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
242 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
243 int linesize_align[AV_NUM_DATA_POINTERS];
244 int align;
245 avcodec_align_dimensions2(s, width, height, linesize_align);
246 align = FFMAX(linesize_align[0], linesize_align[3]);
247 linesize_align[1] <<= chroma_shift;
248 linesize_align[2] <<= chroma_shift;
249 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
250 *width=FFALIGN(*width, align);
251 }
252
253 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
254 enum AVSampleFormat sample_fmt, const uint8_t *buf,
255 int buf_size, int align)
256 {
257 int ch, planar, needed_size, ret = 0;
258
259 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
260 frame->nb_samples, sample_fmt,
261 align);
262 if (buf_size < needed_size)
263 return AVERROR(EINVAL);
264
265 planar = av_sample_fmt_is_planar(sample_fmt);
266 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
267 if (!(frame->extended_data = av_mallocz(nb_channels *
268 sizeof(*frame->extended_data))))
269 return AVERROR(ENOMEM);
270 } else {
271 frame->extended_data = frame->data;
272 }
273
274 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
275 buf, nb_channels, frame->nb_samples,
276 sample_fmt, align)) < 0) {
277 if (frame->extended_data != frame->data)
278 av_free(frame->extended_data);
279 return ret;
280 }
281 if (frame->extended_data != frame->data) {
282 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
283 frame->data[ch] = frame->extended_data[ch];
284 }
285
286 return ret;
287 }
288
289 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
290 {
291 AVCodecInternal *avci = avctx->internal;
292 InternalBuffer *buf;
293 int buf_size, ret;
294
295 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
296 frame->nb_samples, avctx->sample_fmt,
297 32);
298 if (buf_size < 0)
299 return AVERROR(EINVAL);
300
301 /* allocate InternalBuffer if needed */
302 if (!avci->buffer) {
303 avci->buffer = av_mallocz(sizeof(InternalBuffer));
304 if (!avci->buffer)
305 return AVERROR(ENOMEM);
306 }
307 buf = avci->buffer;
308
309 /* if there is a previously-used internal buffer, check its size and
310 channel count to see if we can reuse it */
311 if (buf->extended_data) {
312 /* if current buffer is too small, free it */
313 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
314 av_free(buf->extended_data[0]);
315 if (buf->extended_data != buf->data)
316 av_free(&buf->extended_data);
317 buf->extended_data = NULL;
318 buf->data[0] = NULL;
319 }
320 /* if number of channels has changed, reset and/or free extended data
321 pointers but leave data buffer in buf->data[0] for reuse */
322 if (buf->nb_channels != avctx->channels) {
323 if (buf->extended_data != buf->data)
324 av_free(buf->extended_data);
325 buf->extended_data = NULL;
326 }
327 }
328
329 /* if there is no previous buffer or the previous buffer cannot be used
330 as-is, allocate a new buffer and/or rearrange the channel pointers */
331 if (!buf->extended_data) {
332 if (!buf->data[0]) {
333 if (!(buf->data[0] = av_mallocz(buf_size)))
334 return AVERROR(ENOMEM);
335 buf->audio_data_size = buf_size;
336 }
337 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
338 avctx->sample_fmt, buf->data[0],
339 buf->audio_data_size, 32)))
340 return ret;
341
342 if (frame->extended_data == frame->data)
343 buf->extended_data = buf->data;
344 else
345 buf->extended_data = frame->extended_data;
346 memcpy(buf->data, frame->data, sizeof(frame->data));
347 buf->linesize[0] = frame->linesize[0];
348 buf->nb_channels = avctx->channels;
349 } else {
350 /* copy InternalBuffer info to the AVFrame */
351 frame->extended_data = buf->extended_data;
352 frame->linesize[0] = buf->linesize[0];
353 memcpy(frame->data, buf->data, sizeof(frame->data));
354 }
355
356 frame->type = FF_BUFFER_TYPE_INTERNAL;
357
358 if (avctx->pkt) frame->pkt_pts = avctx->pkt->pts;
359 else frame->pkt_pts = AV_NOPTS_VALUE;
360 frame->reordered_opaque = avctx->reordered_opaque;
361
362 if (avctx->debug & FF_DEBUG_BUFFERS)
363 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
364 "internal audio buffer used\n", frame);
365
366 return 0;
367 }
368
369 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
370 {
371 int i;
372 int w= s->width;
373 int h= s->height;
374 InternalBuffer *buf;
375 AVCodecInternal *avci = s->internal;
376
377 if(pic->data[0]!=NULL) {
378 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
379 return -1;
380 }
381 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
382 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
383 return -1;
384 }
385
386 if(av_image_check_size(w, h, 0, s))
387 return -1;
388
389 if (!avci->buffer) {
390 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
391 sizeof(InternalBuffer));
392 }
393
394 buf = &avci->buffer[avci->buffer_count];
395
396 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
397 if(s->active_thread_type&FF_THREAD_FRAME) {
398 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
399 return -1;
400 }
401
402 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
403 av_freep(&buf->base[i]);
404 buf->data[i]= NULL;
405 }
406 }
407
408 if (!buf->base[0]) {
409 int h_chroma_shift, v_chroma_shift;
410 int size[4] = {0};
411 int tmpsize;
412 int unaligned;
413 AVPicture picture;
414 int stride_align[AV_NUM_DATA_POINTERS];
415 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
416
417 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
418
419 avcodec_align_dimensions2(s, &w, &h, stride_align);
420
421 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
422 w+= EDGE_WIDTH*2;
423 h+= EDGE_WIDTH*2;
424 }
425
426 do {
427 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
428 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
429 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
430 // increase alignment of w for next try (rhs gives the lowest bit set in w)
431 w += w & ~(w-1);
432
433 unaligned = 0;
434 for (i=0; i<4; i++){
435 unaligned |= picture.linesize[i] % stride_align[i];
436 }
437 } while (unaligned);
438
439 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
440 if (tmpsize < 0)
441 return -1;
442
443 for (i=0; i<3 && picture.data[i+1]; i++)
444 size[i] = picture.data[i+1] - picture.data[i];
445 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
446
447 memset(buf->base, 0, sizeof(buf->base));
448 memset(buf->data, 0, sizeof(buf->data));
449
450 for(i=0; i<4 && size[i]; i++){
451 const int h_shift= i==0 ? 0 : h_chroma_shift;
452 const int v_shift= i==0 ? 0 : v_chroma_shift;
453
454 buf->linesize[i]= picture.linesize[i];
455
456 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
457 if(buf->base[i]==NULL) return -1;
458 memset(buf->base[i], 128, size[i]);
459
460 // no edge if EDGE EMU or not planar YUV
461 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
462 buf->data[i] = buf->base[i];
463 else
464 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
465 }
466 for (; i < AV_NUM_DATA_POINTERS; i++) {
467 buf->base[i] = buf->data[i] = NULL;
468 buf->linesize[i] = 0;
469 }
470 if(size[1] && !size[2])
471 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
472 buf->width = s->width;
473 buf->height = s->height;
474 buf->pix_fmt= s->pix_fmt;
475 }
476 pic->type= FF_BUFFER_TYPE_INTERNAL;
477
478 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
479 pic->base[i]= buf->base[i];
480 pic->data[i]= buf->data[i];
481 pic->linesize[i]= buf->linesize[i];
482 }
483 pic->extended_data = pic->data;
484 avci->buffer_count++;
485
486 if(s->pkt) pic->pkt_pts= s->pkt->pts;
487 else pic->pkt_pts= AV_NOPTS_VALUE;
488 pic->reordered_opaque= s->reordered_opaque;
489
490 if(s->debug&FF_DEBUG_BUFFERS)
491 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
492 "buffers used\n", pic, avci->buffer_count);
493
494 return 0;
495 }
496
497 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
498 {
499 switch (avctx->codec_type) {
500 case AVMEDIA_TYPE_VIDEO:
501 return video_get_buffer(avctx, frame);
502 case AVMEDIA_TYPE_AUDIO:
503 return audio_get_buffer(avctx, frame);
504 default:
505 return -1;
506 }
507 }
508
509 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
510 int i;
511 InternalBuffer *buf, *last;
512 AVCodecInternal *avci = s->internal;
513
514 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
515
516 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
517 assert(avci->buffer_count);
518
519 if (avci->buffer) {
520 buf = NULL; /* avoids warning */
521 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
522 buf = &avci->buffer[i];
523 if (buf->data[0] == pic->data[0])
524 break;
525 }
526 assert(i < avci->buffer_count);
527 avci->buffer_count--;
528 last = &avci->buffer[avci->buffer_count];
529
530 if (buf != last)
531 FFSWAP(InternalBuffer, *buf, *last);
532 }
533
534 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
535 pic->data[i]=NULL;
536 // pic->base[i]=NULL;
537 }
538 //printf("R%X\n", pic->opaque);
539
540 if(s->debug&FF_DEBUG_BUFFERS)
541 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
542 "buffers used\n", pic, avci->buffer_count);
543 }
544
545 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
546 AVFrame temp_pic;
547 int i;
548
549 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
550
551 /* If no picture return a new buffer */
552 if(pic->data[0] == NULL) {
553 /* We will copy from buffer, so must be readable */
554 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
555 return s->get_buffer(s, pic);
556 }
557
558 /* If internal buffer type return the same buffer */
559 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
560 if(s->pkt) pic->pkt_pts= s->pkt->pts;
561 else pic->pkt_pts= AV_NOPTS_VALUE;
562 pic->reordered_opaque= s->reordered_opaque;
563 return 0;
564 }
565
566 /*
567 * Not internal type and reget_buffer not overridden, emulate cr buffer
568 */
569 temp_pic = *pic;
570 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
571 pic->data[i] = pic->base[i] = NULL;
572 pic->opaque = NULL;
573 /* Allocate new frame */
574 if (s->get_buffer(s, pic))
575 return -1;
576 /* Copy image data from old buffer to new buffer */
577 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
578 s->height);
579 s->release_buffer(s, &temp_pic); // Release old frame
580 return 0;
581 }
582
583 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
584 int i;
585
586 for(i=0; i<count; i++){
587 int r= func(c, (char*)arg + i*size);
588 if(ret) ret[i]= r;
589 }
590 return 0;
591 }
592
593 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
594 int i;
595
596 for(i=0; i<count; i++){
597 int r= func(c, arg, i, 0);
598 if(ret) ret[i]= r;
599 }
600 return 0;
601 }
602
603 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
604 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
605 ++fmt;
606 return fmt[0];
607 }
608
609 void avcodec_get_frame_defaults(AVFrame *pic){
610 memset(pic, 0, sizeof(AVFrame));
611
612 pic->pts= AV_NOPTS_VALUE;
613 pic->key_frame= 1;
614 pic->sample_aspect_ratio = (AVRational){0, 1};
615 pic->format = -1; /* unknown */
616 }
617
618 AVFrame *avcodec_alloc_frame(void){
619 AVFrame *pic= av_malloc(sizeof(AVFrame));
620
621 if(pic==NULL) return NULL;
622
623 avcodec_get_frame_defaults(pic);
624
625 return pic;
626 }
627
628 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
629 {
630 int ret = 0;
631 AVDictionary *tmp = NULL;
632
633 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
634 return AVERROR(EINVAL);
635
636 if (options)
637 av_dict_copy(&tmp, *options, 0);
638
639 /* If there is a user-supplied mutex locking routine, call it. */
640 if (ff_lockmgr_cb) {
641 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
642 return -1;
643 }
644
645 entangled_thread_counter++;
646 if(entangled_thread_counter != 1){
647 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
648 ret = -1;
649 goto end;
650 }
651
652 if(avctx->codec || !codec) {
653 ret = AVERROR(EINVAL);
654 goto end;
655 }
656
657 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
658 if (!avctx->internal) {
659 ret = AVERROR(ENOMEM);
660 goto end;
661 }
662
663 if (codec->priv_data_size > 0) {
664 if(!avctx->priv_data){
665 avctx->priv_data = av_mallocz(codec->priv_data_size);
666 if (!avctx->priv_data) {
667 ret = AVERROR(ENOMEM);
668 goto end;
669 }
670 if (codec->priv_class) {
671 *(AVClass**)avctx->priv_data= codec->priv_class;
672 av_opt_set_defaults(avctx->priv_data);
673 }
674 }
675 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
676 goto free_and_end;
677 } else {
678 avctx->priv_data = NULL;
679 }
680 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
681 goto free_and_end;
682
683 if(avctx->coded_width && avctx->coded_height)
684 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
685 else if(avctx->width && avctx->height)
686 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
687
688 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
689 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
690 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
691 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
692 avcodec_set_dimensions(avctx, 0, 0);
693 }
694
695 /* if the decoder init function was already called previously,
696 free the already allocated subtitle_header before overwriting it */
697 if (codec_is_decoder(codec))
698 av_freep(&avctx->subtitle_header);
699
700 #define SANE_NB_CHANNELS 128U
701 if (avctx->channels > SANE_NB_CHANNELS) {
702 ret = AVERROR(EINVAL);
703 goto free_and_end;
704 }
705
706 avctx->codec = codec;
707 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
708 avctx->codec_id == CODEC_ID_NONE) {
709 avctx->codec_type = codec->type;
710 avctx->codec_id = codec->id;
711 }
712 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
713 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
714 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
715 ret = AVERROR(EINVAL);
716 goto free_and_end;
717 }
718 avctx->frame_number = 0;
719
720 if (HAVE_THREADS && !avctx->thread_opaque) {
721 ret = ff_thread_init(avctx);
722 if (ret < 0) {
723 goto free_and_end;
724 }
725 }
726 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
727 avctx->thread_count = 1;
728
729 if (avctx->codec->max_lowres < avctx->lowres) {
730 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
731 avctx->codec->max_lowres);
732 ret = AVERROR(EINVAL);
733 goto free_and_end;
734 }
735 if (codec_is_encoder(avctx->codec)) {
736 int i;
737 if (avctx->codec->sample_fmts) {
738 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
739 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
740 break;
741 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
742 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
743 ret = AVERROR(EINVAL);
744 goto free_and_end;
745 }
746 }
747 if (avctx->codec->supported_samplerates) {
748 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
749 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
750 break;
751 if (avctx->codec->supported_samplerates[i] == 0) {
752 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
753 ret = AVERROR(EINVAL);
754 goto free_and_end;
755 }
756 }
757 if (avctx->codec->channel_layouts) {
758 if (!avctx->channel_layout) {
759 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
760 } else {
761 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
762 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
763 break;
764 if (avctx->codec->channel_layouts[i] == 0) {
765 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
766 ret = AVERROR(EINVAL);
767 goto free_and_end;
768 }
769 }
770 }
771 if (avctx->channel_layout && avctx->channels) {
772 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
773 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
774 ret = AVERROR(EINVAL);
775 goto free_and_end;
776 }
777 } else if (avctx->channel_layout) {
778 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
779 }
780 }
781
782 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
783 ret = avctx->codec->init(avctx);
784 if (ret < 0) {
785 goto free_and_end;
786 }
787 }
788 end:
789 entangled_thread_counter--;
790
791 /* Release any user-supplied mutex. */
792 if (ff_lockmgr_cb) {
793 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
794 }
795 if (options) {
796 av_dict_free(options);
797 *options = tmp;
798 }
799
800 return ret;
801 free_and_end:
802 av_dict_free(&tmp);
803 av_freep(&avctx->priv_data);
804 av_freep(&avctx->internal);
805 avctx->codec= NULL;
806 goto end;
807 }
808
809 int ff_alloc_packet(AVPacket *avpkt, int size)
810 {
811 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
812 return AVERROR(EINVAL);
813
814 if (avpkt->data) {
815 uint8_t *pkt_data;
816 int pkt_size;
817
818 if (avpkt->size < size)
819 return AVERROR(EINVAL);
820
821 pkt_data = avpkt->data;
822 pkt_size = avpkt->size;
823 av_init_packet(avpkt);
824 avpkt->data = pkt_data;
825 avpkt->size = pkt_size;
826 return 0;
827 } else {
828 return av_new_packet(avpkt, size);
829 }
830 }
831
832 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
833 AVPacket *avpkt,
834 const AVFrame *frame,
835 int *got_packet_ptr)
836 {
837 int ret;
838 int user_packet = !!avpkt->data;
839 int nb_samples;
840
841 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
842 av_init_packet(avpkt);
843 avpkt->size = 0;
844 return 0;
845 }
846
847 /* check for valid frame size */
848 if (frame) {
849 nb_samples = frame->nb_samples;
850 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
851 if (nb_samples > avctx->frame_size)
852 return AVERROR(EINVAL);
853 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
854 if (nb_samples != avctx->frame_size)
855 return AVERROR(EINVAL);
856 }
857 } else {
858 nb_samples = avctx->frame_size;
859 }
860
861 if (avctx->codec->encode2) {
862 *got_packet_ptr = 0;
863 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
864 if (!ret && *got_packet_ptr &&
865 !(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
866 avpkt->pts = frame->pts;
867 avpkt->duration = av_rescale_q(frame->nb_samples,
868 (AVRational){ 1, avctx->sample_rate },
869 avctx->time_base);
870 }
871 } else {
872 /* for compatibility with encoders not supporting encode2(), we need to
873 allocate a packet buffer if the user has not provided one or check
874 the size otherwise */
875 int fs_tmp = 0;
876 int buf_size = avpkt->size;
877 if (!user_packet) {
878 if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) {
879 av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0);
880 buf_size = nb_samples * avctx->channels *
881 av_get_bits_per_sample(avctx->codec_id) / 8;
882 } else {
883 /* this is a guess as to the required size.
884 if an encoder needs more than this, it should probably
885 implement encode2() */
886 buf_size = 2 * avctx->frame_size * avctx->channels *
887 av_get_bytes_per_sample(avctx->sample_fmt);
888 buf_size += FF_MIN_BUFFER_SIZE;
889 }
890 }
891 if ((ret = ff_alloc_packet(avpkt, buf_size)))
892 return ret;
893
894 /* Encoders using AVCodec.encode() that support
895 CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to
896 the smaller size when encoding the last frame.
897 This code can be removed once all encoders supporting
898 CODEC_CAP_SMALL_LAST_FRAME use encode2() */
899 if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) &&
900 nb_samples < avctx->frame_size) {
901 fs_tmp = avctx->frame_size;
902 avctx->frame_size = nb_samples;
903 }
904
905 /* encode the frame */
906 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size,
907 frame ? frame->data[0] : NULL);
908 if (ret >= 0) {
909 if (!ret) {
910 /* no output. if the packet data was allocated by libavcodec,
911 free it */
912 if (!user_packet)
913 av_freep(&avpkt->data);
914 } else {
915 if (avctx->coded_frame)
916 avpkt->pts = avctx->coded_frame->pts;
917 /* Set duration for final small packet. This can be removed
918 once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use
919 encode2() */
920 if (fs_tmp) {
921 avpkt->duration = av_rescale_q(avctx->frame_size,
922 (AVRational){ 1, avctx->sample_rate },
923 avctx->time_base);
924 }
925 }
926 avpkt->size = ret;
927 *got_packet_ptr = (ret > 0);
928 ret = 0;
929 }
930
931 if (fs_tmp)
932 avctx->frame_size = fs_tmp;
933 }
934 if (!ret)
935 avctx->frame_number++;
936
937 /* NOTE: if we add any audio encoders which output non-keyframe packets,
938 this needs to be moved to the encoders, but for now we can do it
939 here to simplify things */
940 avpkt->flags |= AV_PKT_FLAG_KEY;
941
942 return ret;
943 }
944
945 #if FF_API_OLD_DECODE_AUDIO
946 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
947 uint8_t *buf, int buf_size,
948 const short *samples)
949 {
950 AVPacket pkt;
951 AVFrame frame0;
952 AVFrame *frame;
953 int ret, samples_size, got_packet;
954
955 av_init_packet(&pkt);
956 pkt.data = buf;
957 pkt.size = buf_size;
958
959 if (samples) {
960 frame = &frame0;
961 avcodec_get_frame_defaults(frame);
962
963 if (avctx->frame_size) {
964 frame->nb_samples = avctx->frame_size;
965 } else {
966 /* if frame_size is not set, the number of samples must be
967 calculated from the buffer size */
968 int64_t nb_samples;
969 if (!av_get_bits_per_sample(avctx->codec_id)) {
970 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
971 "support this codec\n");
972 return AVERROR(EINVAL);
973 }
974 nb_samples = (int64_t)buf_size * 8 /
975 (av_get_bits_per_sample(avctx->codec_id) *
976 avctx->channels);
977 if (nb_samples >= INT_MAX)
978 return AVERROR(EINVAL);
979 frame->nb_samples = nb_samples;
980 }
981
982 /* it is assumed that the samples buffer is large enough based on the
983 relevant parameters */
984 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
985 frame->nb_samples,
986 avctx->sample_fmt, 1);
987 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
988 avctx->sample_fmt,
989 samples, samples_size, 1)))
990 return ret;
991
992 /* fabricate frame pts from sample count.
993 this is needed because the avcodec_encode_audio() API does not have
994 a way for the user to provide pts */
995 frame->pts = av_rescale_q(avctx->internal->sample_count,
996 (AVRational){ 1, avctx->sample_rate },
997 avctx->time_base);
998 avctx->internal->sample_count += frame->nb_samples;
999 } else {
1000 frame = NULL;
1001 }
1002
1003 got_packet = 0;
1004 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1005 if (!ret && got_packet && avctx->coded_frame) {
1006 avctx->coded_frame->pts = pkt.pts;
1007 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1008 }
1009 /* free any side data since we cannot return it */
1010 if (pkt.side_data_elems > 0) {
1011 int i;
1012 for (i = 0; i < pkt.side_data_elems; i++)
1013 av_free(pkt.side_data[i].data);
1014 av_freep(&pkt.side_data);
1015 pkt.side_data_elems = 0;
1016 }
1017
1018 if (frame && frame->extended_data != frame->data)
1019 av_free(frame->extended_data);
1020
1021 return ret ? ret : pkt.size;
1022 }
1023 #endif
1024
1025 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1026 const AVFrame *pict)
1027 {
1028 if(buf_size < FF_MIN_BUFFER_SIZE){
1029 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1030 return -1;
1031 }
1032 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
1033 return -1;
1034 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
1035 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
1036 avctx->frame_number++;
1037 emms_c(); //needed to avoid an emms_c() call before every return;
1038
1039 return ret;
1040 }else
1041 return 0;
1042 }
1043
1044 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1045 const AVSubtitle *sub)
1046 {
1047 int ret;
1048 if(sub->start_display_time) {
1049 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1050 return -1;
1051 }
1052 if(sub->num_rects == 0 || !sub->rects)
1053 return -1;
1054 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
1055 avctx->frame_number++;
1056 return ret;
1057 }
1058
1059 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1060 {
1061 int size = 0;
1062 const uint8_t *data;
1063 uint32_t flags;
1064
1065 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1066 return;
1067
1068 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1069 if (!data || size < 4)
1070 return;
1071 flags = bytestream_get_le32(&data);
1072 size -= 4;
1073 if (size < 4) /* Required for any of the changes */
1074 return;
1075 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1076 avctx->channels = bytestream_get_le32(&data);
1077 size -= 4;
1078 }
1079 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1080 if (size < 8)
1081 return;
1082 avctx->channel_layout = bytestream_get_le64(&data);
1083 size -= 8;
1084 }
1085 if (size < 4)
1086 return;
1087 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1088 avctx->sample_rate = bytestream_get_le32(&data);
1089 size -= 4;
1090 }
1091 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1092 if (size < 8)
1093 return;
1094 avctx->width = bytestream_get_le32(&data);
1095 avctx->height = bytestream_get_le32(&data);
1096 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1097 size -= 8;
1098 }
1099 }
1100
1101 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1102 int *got_picture_ptr,
1103 AVPacket *avpkt)
1104 {
1105 int ret;
1106
1107 *got_picture_ptr= 0;
1108 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1109 return -1;
1110
1111 avctx->pkt = avpkt;
1112 apply_param_change(avctx, avpkt);
1113
1114 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1115 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1116 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1117 avpkt);
1118 else {
1119 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1120 avpkt);
1121 picture->pkt_dts= avpkt->dts;
1122 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1123 picture->width = avctx->width;
1124 picture->height = avctx->height;
1125 picture->format = avctx->pix_fmt;
1126 }
1127
1128 emms_c(); //needed to avoid an emms_c() call before every return;
1129
1130 if (*got_picture_ptr)
1131 avctx->frame_number++;
1132 }else
1133 ret= 0;
1134
1135 return ret;
1136 }
1137
1138 #if FF_API_OLD_DECODE_AUDIO
1139 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1140 int *frame_size_ptr,
1141 AVPacket *avpkt)
1142 {
1143 AVFrame frame;
1144 int ret, got_frame = 0;
1145
1146 if (avctx->get_buffer != avcodec_default_get_buffer) {
1147 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1148 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1149 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1150 "avcodec_decode_audio4()\n");
1151 avctx->get_buffer = avcodec_default_get_buffer;
1152 }
1153
1154 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1155
1156 if (ret >= 0 && got_frame) {
1157 int ch, plane_size;
1158 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1159 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1160 frame.nb_samples,
1161 avctx->sample_fmt, 1);
1162 if (*frame_size_ptr < data_size) {
1163 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1164 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1165 return AVERROR(EINVAL);
1166 }
1167
1168 memcpy(samples, frame.extended_data[0], plane_size);
1169
1170 if (planar && avctx->channels > 1) {
1171 uint8_t *out = ((uint8_t *)samples) + plane_size;
1172 for (ch = 1; ch < avctx->channels; ch++) {
1173 memcpy(out, frame.extended_data[ch], plane_size);
1174 out += plane_size;
1175 }
1176 }
1177 *frame_size_ptr = data_size;
1178 } else {
1179 *frame_size_ptr = 0;
1180 }
1181 return ret;
1182 }
1183 #endif
1184
1185 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1186 AVFrame *frame,
1187 int *got_frame_ptr,
1188 AVPacket *avpkt)
1189 {
1190 int ret = 0;
1191
1192 *got_frame_ptr = 0;
1193
1194 avctx->pkt = avpkt;
1195
1196 if (!avpkt->data && avpkt->size) {
1197 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1198 return AVERROR(EINVAL);
1199 }
1200
1201 apply_param_change(avctx, avpkt);
1202
1203 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1204 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1205 if (ret >= 0 && *got_frame_ptr) {
1206 avctx->frame_number++;
1207 frame->pkt_dts = avpkt->dts;
1208 if (frame->format == AV_SAMPLE_FMT_NONE)
1209 frame->format = avctx->sample_fmt;
1210 }
1211 }
1212 return ret;
1213 }
1214
1215 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1216 int *got_sub_ptr,
1217 AVPacket *avpkt)
1218 {
1219 int ret;
1220
1221 avctx->pkt = avpkt;
1222 *got_sub_ptr = 0;
1223 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1224 if (*got_sub_ptr)
1225 avctx->frame_number++;
1226 return ret;
1227 }
1228
1229 void avsubtitle_free(AVSubtitle *sub)
1230 {
1231 int i;
1232
1233 for (i = 0; i < sub->num_rects; i++)
1234 {
1235 av_freep(&sub->rects[i]->pict.data[0]);
1236 av_freep(&sub->rects[i]->pict.data[1]);
1237 av_freep(&sub->rects[i]->pict.data[2]);
1238 av_freep(&sub->rects[i]->pict.data[3]);
1239 av_freep(&sub->rects[i]->text);
1240 av_freep(&sub->rects[i]->ass);
1241 av_freep(&sub->rects[i]);
1242 }
1243
1244 av_freep(&sub->rects);
1245
1246 memset(sub, 0, sizeof(AVSubtitle));
1247 }
1248
1249 av_cold int avcodec_close(AVCodecContext *avctx)
1250 {
1251 /* If there is a user-supplied mutex locking routine, call it. */
1252 if (ff_lockmgr_cb) {
1253 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1254 return -1;
1255 }
1256
1257 entangled_thread_counter++;
1258 if(entangled_thread_counter != 1){
1259 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1260 entangled_thread_counter--;
1261 return -1;
1262 }
1263
1264 if (HAVE_THREADS && avctx->thread_opaque)
1265 ff_thread_free(avctx);
1266 if (avctx->codec && avctx->codec->close)
1267 avctx->codec->close(avctx);
1268 avcodec_default_free_buffers(avctx);
1269 avctx->coded_frame = NULL;
1270 av_freep(&avctx->internal);
1271 if (avctx->codec && avctx->codec->priv_class)
1272 av_opt_free(avctx->priv_data);
1273 av_opt_free(avctx);
1274 av_freep(&avctx->priv_data);
1275 if (codec_is_encoder(avctx->codec))
1276 av_freep(&avctx->extradata);
1277 avctx->codec = NULL;
1278 avctx->active_thread_type = 0;
1279 entangled_thread_counter--;
1280
1281 /* Release any user-supplied mutex. */
1282 if (ff_lockmgr_cb) {
1283 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1284 }
1285 return 0;
1286 }
1287
1288 AVCodec *avcodec_find_encoder(enum CodecID id)
1289 {
1290 AVCodec *p, *experimental=NULL;
1291 p = first_avcodec;
1292 while (p) {
1293 if (codec_is_encoder(p) && p->id == id) {
1294 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1295 experimental = p;
1296 } else
1297 return p;
1298 }
1299 p = p->next;
1300 }
1301 return experimental;
1302 }
1303
1304 AVCodec *avcodec_find_encoder_by_name(const char *name)
1305 {
1306 AVCodec *p;
1307 if (!name)
1308 return NULL;
1309 p = first_avcodec;
1310 while (p) {
1311 if (codec_is_encoder(p) && strcmp(name,p->name) == 0)
1312 return p;
1313 p = p->next;
1314 }
1315 return NULL;
1316 }
1317
1318 AVCodec *avcodec_find_decoder(enum CodecID id)
1319 {
1320 AVCodec *p;
1321 p = first_avcodec;
1322 while (p) {
1323 if (codec_is_decoder(p) && p->id == id)
1324 return p;
1325 p = p->next;
1326 }
1327 return NULL;
1328 }
1329
1330 AVCodec *avcodec_find_decoder_by_name(const char *name)
1331 {
1332 AVCodec *p;
1333 if (!name)
1334 return NULL;
1335 p = first_avcodec;
1336 while (p) {
1337 if (codec_is_decoder(p) && strcmp(name,p->name) == 0)
1338 return p;
1339 p = p->next;
1340 }
1341 return NULL;
1342 }
1343
1344 static int get_bit_rate(AVCodecContext *ctx)
1345 {
1346 int bit_rate;
1347 int bits_per_sample;
1348
1349 switch(ctx->codec_type) {
1350 case AVMEDIA_TYPE_VIDEO:
1351 case AVMEDIA_TYPE_DATA:
1352 case AVMEDIA_TYPE_SUBTITLE:
1353 case AVMEDIA_TYPE_ATTACHMENT:
1354 bit_rate = ctx->bit_rate;
1355 break;
1356 case AVMEDIA_TYPE_AUDIO:
1357 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1358 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1359 break;
1360 default:
1361 bit_rate = 0;
1362 break;
1363 }
1364 return bit_rate;
1365 }
1366
1367 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1368 {
1369 int i, len, ret = 0;
1370
1371 for (i = 0; i < 4; i++) {
1372 len = snprintf(buf, buf_size,
1373 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1374 buf += len;
1375 buf_size = buf_size > len ? buf_size - len : 0;
1376 ret += len;
1377 codec_tag>>=8;
1378 }
1379 return ret;
1380 }
1381
1382 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1383 {
1384 const char *codec_name;
1385 const char *profile = NULL;
1386 AVCodec *p;
1387 char buf1[32];
1388 int bitrate;
1389 AVRational display_aspect_ratio;
1390
1391 if (encode)
1392 p = avcodec_find_encoder(enc->codec_id);
1393 else
1394 p = avcodec_find_decoder(enc->codec_id);
1395
1396 if (p) {
1397 codec_name = p->name;
1398 profile = av_get_profile_name(p, enc->profile);
1399 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1400 /* fake mpeg2 transport stream codec (currently not
1401 registered) */
1402 codec_name = "mpeg2ts";
1403 } else if (enc->codec_name[0] != '\0') {
1404 codec_name = enc->codec_name;
1405 } else {
1406 /* output avi tags */
1407 char tag_buf[32];
1408 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1409 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1410 codec_name = buf1;
1411 }
1412
1413 switch(enc->codec_type) {
1414 case AVMEDIA_TYPE_VIDEO:
1415 snprintf(buf, buf_size,
1416 "Video: %s%s",
1417 codec_name, enc->mb_decision ? " (hq)" : "");
1418 if (profile)
1419 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1420 " (%s)", profile);
1421 if (enc->pix_fmt != PIX_FMT_NONE) {
1422 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1423 ", %s",
1424 av_get_pix_fmt_name(enc->pix_fmt));
1425 }
1426 if (enc->width) {
1427 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1428 ", %dx%d",
1429 enc->width, enc->height);
1430 if (enc->sample_aspect_ratio.num) {
1431 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1432 enc->width*enc->sample_aspect_ratio.num,
1433 enc->height*enc->sample_aspect_ratio.den,
1434 1024*1024);
1435 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1436 " [PAR %d:%d DAR %d:%d]",
1437 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1438 display_aspect_ratio.num, display_aspect_ratio.den);
1439 }
1440 if(av_log_get_level() >= AV_LOG_DEBUG){
1441 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1442 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1443 ", %d/%d",
1444 enc->time_base.num/g, enc->time_base.den/g);
1445 }
1446 }
1447 if (encode) {
1448 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1449 ", q=%d-%d", enc->qmin, enc->qmax);
1450 }
1451 break;
1452 case AVMEDIA_TYPE_AUDIO:
1453 snprintf(buf, buf_size,
1454 "Audio: %s",
1455 codec_name);
1456 if (profile)
1457 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1458 " (%s)", profile);
1459 if (enc->sample_rate) {
1460 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1461 ", %d Hz", enc->sample_rate);
1462 }
1463 av_strlcat(buf, ", ", buf_size);
1464 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1465 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1466 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1467 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1468 }
1469 break;
1470 case AVMEDIA_TYPE_DATA:
1471 snprintf(buf, buf_size, "Data: %s", codec_name);
1472 break;
1473 case AVMEDIA_TYPE_SUBTITLE:
1474 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1475 break;
1476 case AVMEDIA_TYPE_ATTACHMENT:
1477 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1478 break;
1479 default:
1480 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1481 return;
1482 }
1483 if (encode) {
1484 if (enc->flags & CODEC_FLAG_PASS1)
1485 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1486 ", pass 1");
1487 if (enc->flags & CODEC_FLAG_PASS2)
1488 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1489 ", pass 2");
1490 }
1491 bitrate = get_bit_rate(enc);
1492 if (bitrate != 0) {
1493 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1494 ", %d kb/s", bitrate / 1000);
1495 }
1496 }
1497
1498 const char *av_get_profile_name(const AVCodec *codec, int profile)
1499 {
1500 const AVProfile *p;
1501 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1502 return NULL;
1503
1504 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1505 if (p->profile == profile)
1506 return p->name;
1507
1508 return NULL;
1509 }
1510
1511 unsigned avcodec_version( void )
1512 {
1513 return LIBAVCODEC_VERSION_INT;
1514 }
1515
1516 const char *avcodec_configuration(void)
1517 {
1518 return LIBAV_CONFIGURATION;
1519 }
1520
1521 const char *avcodec_license(void)
1522 {
1523 #define LICENSE_PREFIX "libavcodec license: "
1524 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1525 }
1526
1527 void avcodec_flush_buffers(AVCodecContext *avctx)
1528 {
1529 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1530 ff_thread_flush(avctx);
1531 else if(avctx->codec->flush)
1532 avctx->codec->flush(avctx);
1533 }
1534
1535 static void video_free_buffers(AVCodecContext *s)
1536 {
1537 AVCodecInternal *avci = s->internal;
1538 int i, j;
1539
1540 if (!avci->buffer)
1541 return;
1542
1543 if (avci->buffer_count)
1544 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1545 avci->buffer_count);
1546 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1547 InternalBuffer *buf = &avci->buffer[i];
1548 for(j=0; j<4; j++){
1549 av_freep(&buf->base[j]);
1550 buf->data[j]= NULL;
1551 }
1552 }
1553 av_freep(&avci->buffer);
1554
1555 avci->buffer_count=0;
1556 }
1557
1558 static void audio_free_buffers(AVCodecContext *avctx)
1559 {
1560 AVCodecInternal *avci = avctx->internal;
1561 InternalBuffer *buf;
1562
1563 if (!avci->buffer)
1564 return;
1565 buf = avci->buffer;
1566
1567 if (buf->extended_data) {
1568 av_free(buf->extended_data[0]);
1569 if (buf->extended_data != buf->data)
1570 av_free(buf->extended_data);
1571 }
1572 av_freep(&avci->buffer);
1573 }
1574
1575 void avcodec_default_free_buffers(AVCodecContext *avctx)
1576 {
1577 switch (avctx->codec_type) {
1578 case AVMEDIA_TYPE_VIDEO:
1579 video_free_buffers(avctx);
1580 break;
1581 case AVMEDIA_TYPE_AUDIO:
1582 audio_free_buffers(avctx);
1583 break;
1584 default:
1585 break;
1586 }
1587 }
1588
1589 int av_get_bits_per_sample(enum CodecID codec_id){
1590 switch(codec_id){
1591 case CODEC_ID_ADPCM_SBPRO_2:
1592 return 2;
1593 case CODEC_ID_ADPCM_SBPRO_3:
1594 return 3;
1595 case CODEC_ID_ADPCM_SBPRO_4:
1596 case CODEC_ID_ADPCM_CT:
1597 case CODEC_ID_ADPCM_IMA_APC:
1598 case CODEC_ID_ADPCM_IMA_WAV:
1599 case CODEC_ID_ADPCM_IMA_QT:
1600 case CODEC_ID_ADPCM_SWF:
1601 case CODEC_ID_ADPCM_MS:
1602 case CODEC_ID_ADPCM_YAMAHA:
1603 case CODEC_ID_ADPCM_G722:
1604 return 4;
1605 case CODEC_ID_PCM_ALAW:
1606 case CODEC_ID_PCM_MULAW:
1607 case CODEC_ID_PCM_S8:
1608 case CODEC_ID_PCM_U8:
1609 case CODEC_ID_PCM_ZORK:
1610 return 8;
1611 case CODEC_ID_PCM_S16BE:
1612 case CODEC_ID_PCM_S16LE:
1613 case CODEC_ID_PCM_S16LE_PLANAR:
1614 case CODEC_ID_PCM_U16BE:
1615 case CODEC_ID_PCM_U16LE:
1616 return 16;
1617 case CODEC_ID_PCM_S24DAUD:
1618 case CODEC_ID_PCM_S24BE:
1619 case CODEC_ID_PCM_S24LE:
1620 case CODEC_ID_PCM_U24BE:
1621 case CODEC_ID_PCM_U24LE:
1622 return 24;
1623 case CODEC_ID_PCM_S32BE:
1624 case CODEC_ID_PCM_S32LE:
1625 case CODEC_ID_PCM_U32BE:
1626 case CODEC_ID_PCM_U32LE:
1627 case CODEC_ID_PCM_F32BE:
1628 case CODEC_ID_PCM_F32LE:
1629 return 32;
1630 case CODEC_ID_PCM_F64BE:
1631 case CODEC_ID_PCM_F64LE:
1632 return 64;
1633 default:
1634 return 0;
1635 }
1636 }
1637
1638 #if !HAVE_THREADS
1639 int ff_thread_init(AVCodecContext *s){
1640 return -1;
1641 }
1642 #endif
1643
1644 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1645 {
1646 unsigned int n = 0;
1647
1648 while(v >= 0xff) {
1649 *s++ = 0xff;
1650 v -= 0xff;
1651 n++;
1652 }
1653 *s = v;
1654 n++;
1655 return n;
1656 }
1657
1658 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1659 int i;
1660 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1661 return i;
1662 }
1663
1664 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1665 {
1666 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1667 "version to the newest one from Git. If the problem still "
1668 "occurs, it means that your file has a feature which has not "
1669 "been implemented.\n", feature);
1670 if(want_sample)
1671 av_log_ask_for_sample(avc, NULL);
1672 }
1673
1674 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1675 {
1676 va_list argument_list;
1677
1678 va_start(argument_list, msg);
1679
1680 if (msg)
1681 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1682 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1683 "of this file to ftp://upload.libav.org/incoming/ "
1684 "and contact the libav-devel mailing list.\n");
1685
1686 va_end(argument_list);
1687 }
1688
1689 static AVHWAccel *first_hwaccel = NULL;
1690
1691 void av_register_hwaccel(AVHWAccel *hwaccel)
1692 {
1693 AVHWAccel **p = &first_hwaccel;
1694 while (*p)
1695 p = &(*p)->next;
1696 *p = hwaccel;
1697 hwaccel->next = NULL;
1698 }
1699
1700 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1701 {
1702 return hwaccel ? hwaccel->next : first_hwaccel;
1703 }
1704
1705 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1706 {
1707 AVHWAccel *hwaccel=NULL;
1708
1709 while((hwaccel= av_hwaccel_next(hwaccel))){
1710 if ( hwaccel->id == codec_id
1711 && hwaccel->pix_fmt == pix_fmt)
1712 return hwaccel;
1713 }
1714 return NULL;
1715 }
1716
1717 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1718 {
1719 if (ff_lockmgr_cb) {
1720 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1721 return -1;
1722 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1723 return -1;
1724 }
1725
1726 ff_lockmgr_cb = cb;
1727
1728 if (ff_lockmgr_cb) {
1729 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1730 return -1;
1731 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1732 return -1;
1733 }
1734 return 0;
1735 }
1736
1737 int avpriv_lock_avformat(void)
1738 {
1739 if (ff_lockmgr_cb) {
1740 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1741 return -1;
1742 }
1743 return 0;
1744 }
1745
1746 int avpriv_unlock_avformat(void)
1747 {
1748 if (ff_lockmgr_cb) {
1749 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1750 return -1;
1751 }
1752 return 0;
1753 }
1754
1755 unsigned int avpriv_toupper4(unsigned int x)
1756 {
1757 return toupper( x &0xFF)
1758 + (toupper((x>>8 )&0xFF)<<8 )
1759 + (toupper((x>>16)&0xFF)<<16)
1760 + (toupper((x>>24)&0xFF)<<24);
1761 }
1762
1763 #if !HAVE_THREADS
1764
1765 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1766 {
1767 f->owner = avctx;
1768 return avctx->get_buffer(avctx, f);
1769 }
1770
1771 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1772 {
1773 f->owner->release_buffer(f->owner, f);
1774 }
1775
1776 void ff_thread_finish_setup(AVCodecContext *avctx)
1777 {
1778 }
1779
1780 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1781 {
1782 }
1783
1784 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1785 {
1786 }
1787
1788 #endif
1789
1790 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1791 {
1792 if (codec_id <= CODEC_ID_NONE)
1793 return AVMEDIA_TYPE_UNKNOWN;
1794 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1795 return AVMEDIA_TYPE_VIDEO;
1796 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1797 return AVMEDIA_TYPE_AUDIO;
1798 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1799 return AVMEDIA_TYPE_SUBTITLE;
1800
1801 return AVMEDIA_TYPE_UNKNOWN;
1802 }