3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg 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.
13 * FFmpeg 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.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 "libavutil/avassert.h"
40 #include "libavutil/opt.h"
41 #include "imgconvert.h"
43 #include "audioconvert.h"
45 #include "bytestream.h"
51 static int volatile entangled_thread_counter=0;
52 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
53 static void *codec_mutex;
54 static void *avformat_mutex;
56 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
61 min_size= FFMAX(17*min_size/16 + 32, min_size);
63 ptr= av_realloc(ptr, min_size);
64 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
72 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
77 min_size= FFMAX(17*min_size/16 + 32, min_size);
79 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
80 if (!*p) min_size = 0;
85 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
87 ff_fast_malloc(ptr, size, min_size, 0);
90 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
93 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
98 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
99 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
102 /* encoder management */
103 static AVCodec *first_avcodec = NULL;
105 AVCodec *av_codec_next(AVCodec *c){
106 if(c) return c->next;
107 else return first_avcodec;
110 static void avcodec_init(void)
112 static int initialized = 0;
114 if (initialized != 0)
118 ff_dsputil_static_init();
121 int av_codec_is_encoder(AVCodec *codec)
123 return codec && (codec->encode || codec->encode2);
126 int av_codec_is_decoder(AVCodec *codec)
128 return codec && codec->decode;
131 void avcodec_register(AVCodec *codec)
136 while (*p != NULL) p = &(*p)->next;
140 if (codec->init_static_data)
141 codec->init_static_data(codec);
144 unsigned avcodec_get_edge_width(void)
149 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
150 s->coded_width = width;
151 s->coded_height= height;
152 s->width = -((-width )>>s->lowres);
153 s->height= -((-height)>>s->lowres);
156 #define INTERNAL_BUFFER_SIZE (32+1)
158 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
159 int linesize_align[AV_NUM_DATA_POINTERS])
166 case PIX_FMT_YUV420P:
167 case PIX_FMT_YUYV422:
168 case PIX_FMT_UYVY422:
169 case PIX_FMT_YUV422P:
170 case PIX_FMT_YUV440P:
171 case PIX_FMT_YUV444P:
174 case PIX_FMT_GRAY16BE:
175 case PIX_FMT_GRAY16LE:
176 case PIX_FMT_YUVJ420P:
177 case PIX_FMT_YUVJ422P:
178 case PIX_FMT_YUVJ440P:
179 case PIX_FMT_YUVJ444P:
180 case PIX_FMT_YUVA420P:
181 case PIX_FMT_YUVA444P:
182 case PIX_FMT_YUV420P9LE:
183 case PIX_FMT_YUV420P9BE:
184 case PIX_FMT_YUV420P10LE:
185 case PIX_FMT_YUV420P10BE:
186 case PIX_FMT_YUV422P9LE:
187 case PIX_FMT_YUV422P9BE:
188 case PIX_FMT_YUV422P10LE:
189 case PIX_FMT_YUV422P10BE:
190 case PIX_FMT_YUV444P9LE:
191 case PIX_FMT_YUV444P9BE:
192 case PIX_FMT_YUV444P10LE:
193 case PIX_FMT_YUV444P10BE:
194 case PIX_FMT_GBRP9LE:
195 case PIX_FMT_GBRP9BE:
196 case PIX_FMT_GBRP10LE:
197 case PIX_FMT_GBRP10BE:
198 w_align = 16; //FIXME assume 16 pixel per macroblock
199 h_align = 16 * 2; // interlaced needs 2 macroblocks height
201 case PIX_FMT_YUV411P:
202 case PIX_FMT_UYYVYY411:
206 case PIX_FMT_YUV410P:
207 if(s->codec_id == CODEC_ID_SVQ1){
212 if(s->codec_id == CODEC_ID_RPZA){
219 if(s->codec_id == CODEC_ID_SMC){
225 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
236 if(s->codec_id == CODEC_ID_IFF_ILBM || s->codec_id == CODEC_ID_IFF_BYTERUN1){
237 w_align= FFMAX(w_align, 8);
240 *width = FFALIGN(*width , w_align);
241 *height= FFALIGN(*height, h_align);
242 if(s->codec_id == CODEC_ID_H264 || s->lowres)
243 *height+=2; // some of the optimized chroma MC reads one line too much
244 // which is also done in mpeg decoders with lowres > 0
246 for (i = 0; i < 4; i++)
247 linesize_align[i] = STRIDE_ALIGN;
250 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
251 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
252 int linesize_align[AV_NUM_DATA_POINTERS];
254 avcodec_align_dimensions2(s, width, height, linesize_align);
255 align = FFMAX(linesize_align[0], linesize_align[3]);
256 linesize_align[1] <<= chroma_shift;
257 linesize_align[2] <<= chroma_shift;
258 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
259 *width=FFALIGN(*width, align);
262 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic)
265 pic->pkt_pts = s->pkt->pts;
266 pic->pkt_pos = s->pkt->pos;
268 pic->pkt_pts = AV_NOPTS_VALUE;
271 pic->reordered_opaque= s->reordered_opaque;
272 pic->sample_aspect_ratio = s->sample_aspect_ratio;
273 pic->width = s->width;
274 pic->height = s->height;
275 pic->format = s->pix_fmt;
278 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
279 enum AVSampleFormat sample_fmt, const uint8_t *buf,
280 int buf_size, int align)
282 int ch, planar, needed_size, ret = 0;
284 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
285 frame->nb_samples, sample_fmt,
287 if (buf_size < needed_size)
288 return AVERROR(EINVAL);
290 planar = av_sample_fmt_is_planar(sample_fmt);
291 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
292 if (!(frame->extended_data = av_mallocz(nb_channels *
293 sizeof(*frame->extended_data))))
294 return AVERROR(ENOMEM);
296 frame->extended_data = frame->data;
299 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
300 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
301 sample_fmt, align)) < 0) {
302 if (frame->extended_data != frame->data)
303 av_freep(&frame->extended_data);
306 if (frame->extended_data != frame->data) {
307 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
308 frame->data[ch] = frame->extended_data[ch];
314 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
316 AVCodecInternal *avci = avctx->internal;
320 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
321 frame->nb_samples, avctx->sample_fmt,
324 return AVERROR(EINVAL);
326 /* allocate InternalBuffer if needed */
328 avci->buffer = av_mallocz(sizeof(InternalBuffer));
330 return AVERROR(ENOMEM);
334 /* if there is a previously-used internal buffer, check its size and
335 channel count to see if we can reuse it */
336 if (buf->extended_data) {
337 /* if current buffer is too small, free it */
338 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
339 av_free(buf->extended_data[0]);
340 if (buf->extended_data != buf->data)
341 av_freep(&buf->extended_data);
342 buf->extended_data = NULL;
345 /* if number of channels has changed, reset and/or free extended data
346 pointers but leave data buffer in buf->data[0] for reuse */
347 if (buf->nb_channels != avctx->channels) {
348 if (buf->extended_data != buf->data)
349 av_free(buf->extended_data);
350 buf->extended_data = NULL;
354 /* if there is no previous buffer or the previous buffer cannot be used
355 as-is, allocate a new buffer and/or rearrange the channel pointers */
356 if (!buf->extended_data) {
358 if (!(buf->data[0] = av_mallocz(buf_size)))
359 return AVERROR(ENOMEM);
360 buf->audio_data_size = buf_size;
362 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
363 avctx->sample_fmt, buf->data[0],
364 buf->audio_data_size, 0)))
367 if (frame->extended_data == frame->data)
368 buf->extended_data = buf->data;
370 buf->extended_data = frame->extended_data;
371 memcpy(buf->data, frame->data, sizeof(frame->data));
372 buf->linesize[0] = frame->linesize[0];
373 buf->nb_channels = avctx->channels;
375 /* copy InternalBuffer info to the AVFrame */
376 frame->extended_data = buf->extended_data;
377 frame->linesize[0] = buf->linesize[0];
378 memcpy(frame->data, buf->data, sizeof(frame->data));
381 frame->type = FF_BUFFER_TYPE_INTERNAL;
384 frame->pkt_pts = avctx->pkt->pts;
385 frame->pkt_pos = avctx->pkt->pos;
387 frame->pkt_pts = AV_NOPTS_VALUE;
391 frame->reordered_opaque = avctx->reordered_opaque;
393 if (avctx->debug & FF_DEBUG_BUFFERS)
394 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
395 "internal audio buffer used\n", frame);
400 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
406 AVCodecInternal *avci = s->internal;
408 if(pic->data[0]!=NULL) {
409 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
412 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
413 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
417 if(av_image_check_size(w, h, 0, s) || s->pix_fmt<0)
421 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
422 sizeof(InternalBuffer));
425 buf = &avci->buffer[avci->buffer_count];
427 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
428 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
429 av_freep(&buf->base[i]);
435 int h_chroma_shift, v_chroma_shift;
440 int stride_align[AV_NUM_DATA_POINTERS];
441 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
443 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
445 avcodec_align_dimensions2(s, &w, &h, stride_align);
447 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
453 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
454 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
455 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
456 // increase alignment of w for next try (rhs gives the lowest bit set in w)
461 unaligned |= picture.linesize[i] % stride_align[i];
465 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
469 for (i=0; i<3 && picture.data[i+1]; i++)
470 size[i] = picture.data[i+1] - picture.data[i];
471 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
473 memset(buf->base, 0, sizeof(buf->base));
474 memset(buf->data, 0, sizeof(buf->data));
476 for(i=0; i<4 && size[i]; i++){
477 const int h_shift= i==0 ? 0 : h_chroma_shift;
478 const int v_shift= i==0 ? 0 : v_chroma_shift;
480 buf->linesize[i]= picture.linesize[i];
482 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
483 if(buf->base[i]==NULL) return -1;
484 memset(buf->base[i], 128, size[i]);
486 // no edge if EDGE EMU or not planar YUV
487 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
488 buf->data[i] = buf->base[i];
490 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
492 for (; i < AV_NUM_DATA_POINTERS; i++) {
493 buf->base[i] = buf->data[i] = NULL;
494 buf->linesize[i] = 0;
496 if(size[1] && !size[2])
497 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
498 buf->width = s->width;
499 buf->height = s->height;
500 buf->pix_fmt= s->pix_fmt;
502 pic->type= FF_BUFFER_TYPE_INTERNAL;
504 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
505 pic->base[i]= buf->base[i];
506 pic->data[i]= buf->data[i];
507 pic->linesize[i]= buf->linesize[i];
509 pic->extended_data = pic->data;
510 avci->buffer_count++;
511 pic->width = buf->width;
512 pic->height = buf->height;
513 pic->format = buf->pix_fmt;
514 pic->sample_aspect_ratio = s->sample_aspect_ratio;
517 pic->pkt_pts = s->pkt->pts;
518 pic->pkt_pos = s->pkt->pos;
520 pic->pkt_pts = AV_NOPTS_VALUE;
523 pic->reordered_opaque= s->reordered_opaque;
524 pic->sample_aspect_ratio = s->sample_aspect_ratio;
525 pic->width = s->width;
526 pic->height = s->height;
527 pic->format = s->pix_fmt;
529 if(s->debug&FF_DEBUG_BUFFERS)
530 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
531 "buffers used\n", pic, avci->buffer_count);
536 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
538 switch (avctx->codec_type) {
539 case AVMEDIA_TYPE_VIDEO:
540 return video_get_buffer(avctx, frame);
541 case AVMEDIA_TYPE_AUDIO:
542 return audio_get_buffer(avctx, frame);
548 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
550 InternalBuffer *buf, *last;
551 AVCodecInternal *avci = s->internal;
553 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
555 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
556 assert(avci->buffer_count);
559 buf = NULL; /* avoids warning */
560 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
561 buf = &avci->buffer[i];
562 if (buf->data[0] == pic->data[0])
565 assert(i < avci->buffer_count);
566 avci->buffer_count--;
567 last = &avci->buffer[avci->buffer_count];
570 FFSWAP(InternalBuffer, *buf, *last);
573 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
575 // pic->base[i]=NULL;
577 //printf("R%X\n", pic->opaque);
579 if(s->debug&FF_DEBUG_BUFFERS)
580 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
581 "buffers used\n", pic, avci->buffer_count);
584 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
588 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
590 if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) {
591 av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
592 pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt));
593 s->release_buffer(s, pic);
596 ff_init_buffer_info(s, pic);
598 /* If no picture return a new buffer */
599 if(pic->data[0] == NULL) {
600 /* We will copy from buffer, so must be readable */
601 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
602 return s->get_buffer(s, pic);
605 assert(s->pix_fmt == pic->format);
607 /* If internal buffer type return the same buffer */
608 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
613 * Not internal type and reget_buffer not overridden, emulate cr buffer
616 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
617 pic->data[i] = pic->base[i] = NULL;
619 /* Allocate new frame */
620 if (s->get_buffer(s, pic))
622 /* Copy image data from old buffer to new buffer */
623 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
625 s->release_buffer(s, &temp_pic); // Release old frame
629 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
632 for(i=0; i<count; i++){
633 int r= func(c, (char*)arg + i*size);
639 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
642 for(i=0; i<count; i++){
643 int r= func(c, arg, i, 0);
649 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
650 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
655 void avcodec_get_frame_defaults(AVFrame *pic){
656 memset(pic, 0, sizeof(AVFrame));
658 pic->pts = pic->pkt_dts = pic->pkt_pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
661 pic->sample_aspect_ratio = (AVRational){0, 1};
662 pic->format = -1; /* unknown */
665 AVFrame *avcodec_alloc_frame(void){
666 AVFrame *pic= av_malloc(sizeof(AVFrame));
668 if(pic==NULL) return NULL;
670 avcodec_get_frame_defaults(pic);
675 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
677 memset(sub, 0, sizeof(*sub));
678 sub->pts = AV_NOPTS_VALUE;
681 static int get_bit_rate(AVCodecContext *ctx)
686 switch(ctx->codec_type) {
687 case AVMEDIA_TYPE_VIDEO:
688 case AVMEDIA_TYPE_DATA:
689 case AVMEDIA_TYPE_SUBTITLE:
690 case AVMEDIA_TYPE_ATTACHMENT:
691 bit_rate = ctx->bit_rate;
693 case AVMEDIA_TYPE_AUDIO:
694 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
695 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
704 #if FF_API_AVCODEC_OPEN
705 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
707 return avcodec_open2(avctx, codec, NULL);
711 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
714 AVDictionary *tmp = NULL;
716 if (avcodec_is_open(avctx))
719 if ((!codec && !avctx->codec)) {
720 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
721 return AVERROR(EINVAL);
723 if ((codec && avctx->codec && codec != avctx->codec)) {
724 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
725 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
726 return AVERROR(EINVAL);
729 codec = avctx->codec;
731 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
732 return AVERROR(EINVAL);
735 av_dict_copy(&tmp, *options, 0);
737 /* If there is a user-supplied mutex locking routine, call it. */
739 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
743 entangled_thread_counter++;
744 if(entangled_thread_counter != 1){
745 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
750 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
751 if (!avctx->internal) {
752 ret = AVERROR(ENOMEM);
756 if (codec->priv_data_size > 0) {
757 if(!avctx->priv_data){
758 avctx->priv_data = av_mallocz(codec->priv_data_size);
759 if (!avctx->priv_data) {
760 ret = AVERROR(ENOMEM);
763 if (codec->priv_class) {
764 *(const AVClass**)avctx->priv_data= codec->priv_class;
765 av_opt_set_defaults(avctx->priv_data);
768 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
771 avctx->priv_data = NULL;
773 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
776 if (codec->capabilities & CODEC_CAP_EXPERIMENTAL)
777 if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
778 av_log(avctx, AV_LOG_ERROR, "Codec is experimental but experimental codecs are not enabled, see -strict -2\n");
783 //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
784 if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){
785 if(avctx->coded_width && avctx->coded_height)
786 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
787 else if(avctx->width && avctx->height)
788 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
791 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
792 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
793 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
794 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
795 avcodec_set_dimensions(avctx, 0, 0);
798 /* if the decoder init function was already called previously,
799 free the already allocated subtitle_header before overwriting it */
800 if (av_codec_is_decoder(codec))
801 av_freep(&avctx->subtitle_header);
803 #define SANE_NB_CHANNELS 128U
804 if (avctx->channels > SANE_NB_CHANNELS) {
805 ret = AVERROR(EINVAL);
809 avctx->codec = codec;
810 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
811 avctx->codec_id == CODEC_ID_NONE) {
812 avctx->codec_type = codec->type;
813 avctx->codec_id = codec->id;
815 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
816 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
817 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
818 ret = AVERROR(EINVAL);
821 avctx->frame_number = 0;
823 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
824 (!avctx->time_base.num || !avctx->time_base.den)) {
825 avctx->time_base.num = 1;
826 avctx->time_base.den = avctx->sample_rate;
830 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
832 if (HAVE_THREADS && !avctx->thread_opaque) {
833 ret = ff_thread_init(avctx);
838 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
839 avctx->thread_count = 1;
841 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
842 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
843 avctx->codec->max_lowres);
844 ret = AVERROR(EINVAL);
848 if (av_codec_is_encoder(avctx->codec)) {
850 if (avctx->codec->sample_fmts) {
851 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
852 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
854 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
855 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
856 ret = AVERROR(EINVAL);
860 if (avctx->codec->pix_fmts) {
861 for (i = 0; avctx->codec->pix_fmts[i] != PIX_FMT_NONE; i++)
862 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
864 if (avctx->codec->pix_fmts[i] == PIX_FMT_NONE) {
865 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
866 ret = AVERROR(EINVAL);
870 if (avctx->codec->supported_samplerates) {
871 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
872 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
874 if (avctx->codec->supported_samplerates[i] == 0) {
875 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
876 ret = AVERROR(EINVAL);
880 if (avctx->codec->channel_layouts) {
881 if (!avctx->channel_layout) {
882 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
884 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
885 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
887 if (avctx->codec->channel_layouts[i] == 0) {
888 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
889 ret = AVERROR(EINVAL);
894 if (avctx->channel_layout && avctx->channels) {
895 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
896 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
897 ret = AVERROR(EINVAL);
900 } else if (avctx->channel_layout) {
901 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
905 avctx->pts_correction_num_faulty_pts =
906 avctx->pts_correction_num_faulty_dts = 0;
907 avctx->pts_correction_last_pts =
908 avctx->pts_correction_last_dts = INT64_MIN;
910 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
911 ret = avctx->codec->init(avctx);
919 if (av_codec_is_decoder(avctx->codec)) {
920 if (!avctx->bit_rate)
921 avctx->bit_rate = get_bit_rate(avctx);
922 /* validate channel layout from the decoder */
923 if (avctx->channel_layout &&
924 av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
925 av_log(avctx, AV_LOG_WARNING, "channel layout does not match number of channels\n");
926 avctx->channel_layout = 0;
930 entangled_thread_counter--;
932 /* Release any user-supplied mutex. */
934 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
937 av_dict_free(options);
944 av_freep(&avctx->priv_data);
945 av_freep(&avctx->internal);
950 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
952 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
953 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
954 return AVERROR(EINVAL);
957 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
958 if (!avpkt->data || avpkt->size < size) {
959 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
960 avpkt->data = avctx->internal->byte_buffer;
961 avpkt->size = avctx->internal->byte_buffer_size;
962 avpkt->destruct = NULL;
966 void *destruct = avpkt->destruct;
968 if (avpkt->size < size) {
969 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
970 return AVERROR(EINVAL);
973 av_init_packet(avpkt);
974 avpkt->destruct = destruct;
978 int ret = av_new_packet(avpkt, size);
980 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
985 int ff_alloc_packet(AVPacket *avpkt, int size)
987 return ff_alloc_packet2(NULL, avpkt, size);
990 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
992 const AVFrame *frame,
996 AVPacket user_pkt = *avpkt;
998 int needs_realloc = !user_pkt.data;
1000 *got_packet_ptr = 0;
1002 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1003 av_free_packet(avpkt);
1004 av_init_packet(avpkt);
1009 /* check for valid frame size */
1011 nb_samples = frame->nb_samples;
1012 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1013 if (nb_samples > avctx->frame_size)
1014 return AVERROR(EINVAL);
1015 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1016 if (nb_samples != avctx->frame_size)
1017 return AVERROR(EINVAL);
1020 nb_samples = avctx->frame_size;
1023 if (avctx->codec->encode2) {
1024 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1025 if (!ret && *got_packet_ptr) {
1026 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1027 if (avpkt->pts == AV_NOPTS_VALUE)
1028 avpkt->pts = frame->pts;
1029 if (!avpkt->duration)
1030 avpkt->duration = ff_samples_to_time_base(avctx,
1033 avpkt->dts = avpkt->pts;
1038 /* for compatibility with encoders not supporting encode2(), we need to
1039 allocate a packet buffer if the user has not provided one or check
1040 the size otherwise */
1042 int buf_size = avpkt->size;
1043 if (!user_pkt.data) {
1044 if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) {
1045 av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0);
1047 return AVERROR(EINVAL);
1048 buf_size = nb_samples * avctx->channels *
1049 av_get_bits_per_sample(avctx->codec_id) / 8;
1051 /* this is a guess as to the required size.
1052 if an encoder needs more than this, it should probably
1053 implement encode2() */
1054 buf_size = 2 * avctx->frame_size * avctx->channels *
1055 av_get_bytes_per_sample(avctx->sample_fmt);
1056 buf_size += 2*FF_MIN_BUFFER_SIZE;
1059 if ((ret = ff_alloc_packet2(avctx, avpkt, buf_size)))
1062 /* Encoders using AVCodec.encode() that support
1063 CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to
1064 the smaller size when encoding the last frame.
1065 This code can be removed once all encoders supporting
1066 CODEC_CAP_SMALL_LAST_FRAME use encode2() */
1067 if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) &&
1068 nb_samples < avctx->frame_size) {
1069 fs_tmp = avctx->frame_size;
1070 avctx->frame_size = nb_samples;
1073 /* encode the frame */
1074 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size,
1075 frame ? frame->data[0] : NULL);
1078 /* no output. if the packet data was allocated by libavcodec,
1080 if (!user_pkt.data && avpkt->data != avctx->internal->byte_buffer)
1081 av_freep(&avpkt->data);
1083 if (avctx->coded_frame)
1084 avpkt->pts = avpkt->dts = avctx->coded_frame->pts;
1085 /* Set duration for final small packet. This can be removed
1086 once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use
1089 avpkt->duration = ff_samples_to_time_base(avctx,
1094 *got_packet_ptr = (ret > 0);
1099 avctx->frame_size = fs_tmp;
1101 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1103 if (user_pkt.data) {
1104 if (user_pkt.size >= avpkt->size) {
1105 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1107 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1108 avpkt->size = user_pkt.size;
1111 avpkt->data = user_pkt.data;
1112 avpkt->destruct = user_pkt.destruct;
1114 if (av_dup_packet(avpkt) < 0) {
1115 ret = AVERROR(ENOMEM);
1121 if (needs_realloc && avpkt->data) {
1122 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1124 avpkt->data = new_data;
1127 avctx->frame_number++;
1130 if (ret < 0 || !*got_packet_ptr)
1131 av_free_packet(avpkt);
1133 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1134 this needs to be moved to the encoders, but for now we can do it
1135 here to simplify things */
1136 avpkt->flags |= AV_PKT_FLAG_KEY;
1141 #if FF_API_OLD_DECODE_AUDIO
1142 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1143 uint8_t *buf, int buf_size,
1144 const short *samples)
1149 int ret, samples_size, got_packet;
1151 av_init_packet(&pkt);
1153 pkt.size = buf_size;
1157 avcodec_get_frame_defaults(frame);
1159 if (avctx->frame_size) {
1160 frame->nb_samples = avctx->frame_size;
1162 /* if frame_size is not set, the number of samples must be
1163 calculated from the buffer size */
1165 if (!av_get_bits_per_sample(avctx->codec_id)) {
1166 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1167 "support this codec\n");
1168 return AVERROR(EINVAL);
1170 nb_samples = (int64_t)buf_size * 8 /
1171 (av_get_bits_per_sample(avctx->codec_id) *
1173 if (nb_samples >= INT_MAX)
1174 return AVERROR(EINVAL);
1175 frame->nb_samples = nb_samples;
1178 /* it is assumed that the samples buffer is large enough based on the
1179 relevant parameters */
1180 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1182 avctx->sample_fmt, 1);
1183 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1185 (const uint8_t *)samples, samples_size, 1)))
1188 /* fabricate frame pts from sample count.
1189 this is needed because the avcodec_encode_audio() API does not have
1190 a way for the user to provide pts */
1191 if(avctx->sample_rate && avctx->time_base.num)
1192 frame->pts = ff_samples_to_time_base(avctx,
1193 avctx->internal->sample_count);
1195 frame->pts = AV_NOPTS_VALUE;
1196 avctx->internal->sample_count += frame->nb_samples;
1202 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1203 if (!ret && got_packet && avctx->coded_frame) {
1204 avctx->coded_frame->pts = pkt.pts;
1205 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1207 /* free any side data since we cannot return it */
1208 ff_packet_free_side_data(&pkt);
1210 if (frame && frame->extended_data != frame->data)
1211 av_freep(&frame->extended_data);
1213 return ret ? ret : pkt.size;
1217 #if FF_API_OLD_ENCODE_VIDEO
1218 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1219 const AVFrame *pict)
1222 int ret, got_packet = 0;
1224 if(buf_size < FF_MIN_BUFFER_SIZE){
1225 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1229 av_init_packet(&pkt);
1231 pkt.size = buf_size;
1233 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1234 if (!ret && got_packet && avctx->coded_frame) {
1235 avctx->coded_frame->pts = pkt.pts;
1236 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1239 /* free any side data since we cannot return it */
1240 if (pkt.side_data_elems > 0) {
1242 for (i = 0; i < pkt.side_data_elems; i++)
1243 av_free(pkt.side_data[i].data);
1244 av_freep(&pkt.side_data);
1245 pkt.side_data_elems = 0;
1248 return ret ? ret : pkt.size;
1252 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1254 const AVFrame *frame,
1255 int *got_packet_ptr)
1258 AVPacket user_pkt = *avpkt;
1259 int needs_realloc = !user_pkt.data;
1261 *got_packet_ptr = 0;
1263 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1264 av_free_packet(avpkt);
1265 av_init_packet(avpkt);
1270 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1271 return AVERROR(EINVAL);
1273 av_assert0(avctx->codec->encode2);
1275 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1276 av_assert0(ret <= 0);
1278 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1280 if (user_pkt.data) {
1281 if (user_pkt.size >= avpkt->size) {
1282 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1284 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1285 avpkt->size = user_pkt.size;
1288 avpkt->data = user_pkt.data;
1289 avpkt->destruct = user_pkt.destruct;
1291 if (av_dup_packet(avpkt) < 0) {
1292 ret = AVERROR(ENOMEM);
1298 if (!*got_packet_ptr)
1300 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1301 avpkt->pts = avpkt->dts = frame->pts;
1303 if (needs_realloc && avpkt->data &&
1304 avpkt->destruct == av_destruct_packet) {
1305 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1307 avpkt->data = new_data;
1310 avctx->frame_number++;
1313 if (ret < 0 || !*got_packet_ptr)
1314 av_free_packet(avpkt);
1320 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1321 const AVSubtitle *sub)
1324 if(sub->start_display_time) {
1325 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1329 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)(intptr_t)sub);
1330 avctx->frame_number++;
1335 * Attempt to guess proper monotonic timestamps for decoded video frames
1336 * which might have incorrect times. Input timestamps may wrap around, in
1337 * which case the output will as well.
1339 * @param pts the pts field of the decoded AVPacket, as passed through
1341 * @param dts the dts field of the decoded AVPacket
1342 * @return one of the input values, may be AV_NOPTS_VALUE
1344 static int64_t guess_correct_pts(AVCodecContext *ctx,
1345 int64_t reordered_pts, int64_t dts)
1347 int64_t pts = AV_NOPTS_VALUE;
1349 if (dts != AV_NOPTS_VALUE) {
1350 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1351 ctx->pts_correction_last_dts = dts;
1353 if (reordered_pts != AV_NOPTS_VALUE) {
1354 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1355 ctx->pts_correction_last_pts = reordered_pts;
1357 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1358 && reordered_pts != AV_NOPTS_VALUE)
1359 pts = reordered_pts;
1366 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1369 const uint8_t *data;
1372 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1375 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1376 if (!data || size < 4)
1378 flags = bytestream_get_le32(&data);
1380 if (size < 4) /* Required for any of the changes */
1382 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1383 avctx->channels = bytestream_get_le32(&data);
1386 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1389 avctx->channel_layout = bytestream_get_le64(&data);
1394 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1395 avctx->sample_rate = bytestream_get_le32(&data);
1398 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1401 avctx->width = bytestream_get_le32(&data);
1402 avctx->height = bytestream_get_le32(&data);
1403 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1408 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1409 int *got_picture_ptr,
1410 const AVPacket *avpkt)
1413 // copy to ensure we do not change avpkt
1414 AVPacket tmp = *avpkt;
1416 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1417 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1418 return AVERROR(EINVAL);
1421 *got_picture_ptr= 0;
1422 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1425 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1426 int did_split = av_packet_split_side_data(&tmp);
1427 apply_param_change(avctx, &tmp);
1429 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1430 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1433 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1435 picture->pkt_dts= avpkt->dts;
1437 if(!avctx->has_b_frames){
1438 picture->pkt_pos= avpkt->pos;
1440 //FIXME these should be under if(!avctx->has_b_frames)
1441 if (!picture->sample_aspect_ratio.num)
1442 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1443 if (!picture->width)
1444 picture->width = avctx->width;
1445 if (!picture->height)
1446 picture->height = avctx->height;
1447 if (picture->format == PIX_FMT_NONE)
1448 picture->format = avctx->pix_fmt;
1451 emms_c(); //needed to avoid an emms_c() call before every return;
1455 ff_packet_free_side_data(&tmp);
1457 if (*got_picture_ptr){
1458 avctx->frame_number++;
1459 picture->best_effort_timestamp = guess_correct_pts(avctx,
1469 #if FF_API_OLD_DECODE_AUDIO
1470 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1471 int *frame_size_ptr,
1475 int ret, got_frame = 0;
1477 if (avctx->get_buffer != avcodec_default_get_buffer) {
1478 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1479 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1480 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1481 "avcodec_decode_audio4()\n");
1482 avctx->get_buffer = avcodec_default_get_buffer;
1483 avctx->release_buffer = avcodec_default_release_buffer;
1486 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1488 if (ret >= 0 && got_frame) {
1490 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1491 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1493 avctx->sample_fmt, 1);
1494 if (*frame_size_ptr < data_size) {
1495 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1496 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1497 return AVERROR(EINVAL);
1500 memcpy(samples, frame.extended_data[0], plane_size);
1502 if (planar && avctx->channels > 1) {
1503 uint8_t *out = ((uint8_t *)samples) + plane_size;
1504 for (ch = 1; ch < avctx->channels; ch++) {
1505 memcpy(out, frame.extended_data[ch], plane_size);
1509 *frame_size_ptr = data_size;
1511 *frame_size_ptr = 0;
1517 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1520 const AVPacket *avpkt)
1526 if (!avpkt->data && avpkt->size) {
1527 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1528 return AVERROR(EINVAL);
1530 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
1531 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
1532 return AVERROR(EINVAL);
1535 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1536 // copy to ensure we do not change avpkt
1537 AVPacket tmp = *avpkt;
1538 int did_split = av_packet_split_side_data(&tmp);
1539 apply_param_change(avctx, &tmp);
1542 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
1543 if (ret >= 0 && *got_frame_ptr) {
1544 avctx->frame_number++;
1545 frame->pkt_dts = avpkt->dts;
1546 if (frame->format == AV_SAMPLE_FMT_NONE)
1547 frame->format = avctx->sample_fmt;
1548 if (!frame->channel_layout)
1549 frame->channel_layout = avctx->channel_layout;
1554 ff_packet_free_side_data(&tmp);
1559 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1565 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1566 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1567 return AVERROR(EINVAL);
1572 avcodec_get_subtitle_defaults(sub);
1573 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1575 avctx->frame_number++;
1579 void avsubtitle_free(AVSubtitle *sub)
1583 for (i = 0; i < sub->num_rects; i++)
1585 av_freep(&sub->rects[i]->pict.data[0]);
1586 av_freep(&sub->rects[i]->pict.data[1]);
1587 av_freep(&sub->rects[i]->pict.data[2]);
1588 av_freep(&sub->rects[i]->pict.data[3]);
1589 av_freep(&sub->rects[i]->text);
1590 av_freep(&sub->rects[i]->ass);
1591 av_freep(&sub->rects[i]);
1594 av_freep(&sub->rects);
1596 memset(sub, 0, sizeof(AVSubtitle));
1599 av_cold int avcodec_close(AVCodecContext *avctx)
1601 /* If there is a user-supplied mutex locking routine, call it. */
1602 if (ff_lockmgr_cb) {
1603 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1607 entangled_thread_counter++;
1608 if(entangled_thread_counter != 1){
1609 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1610 entangled_thread_counter--;
1614 if (avcodec_is_open(avctx)) {
1615 if (HAVE_THREADS && avctx->thread_opaque)
1616 ff_thread_free(avctx);
1617 if (avctx->codec && avctx->codec->close)
1618 avctx->codec->close(avctx);
1619 avcodec_default_free_buffers(avctx);
1620 avctx->coded_frame = NULL;
1621 avctx->internal->byte_buffer_size = 0;
1622 av_freep(&avctx->internal->byte_buffer);
1623 av_freep(&avctx->internal);
1626 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1627 av_opt_free(avctx->priv_data);
1629 av_freep(&avctx->priv_data);
1630 if (av_codec_is_encoder(avctx->codec))
1631 av_freep(&avctx->extradata);
1632 avctx->codec = NULL;
1633 avctx->active_thread_type = 0;
1634 entangled_thread_counter--;
1636 /* Release any user-supplied mutex. */
1637 if (ff_lockmgr_cb) {
1638 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1643 static enum CodecID remap_deprecated_codec_id(enum CodecID id)
1646 //This is for future deprecatec codec ids, its empty since
1647 //last major bump but will fill up again over time, please dont remove it
1648 // case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO;
1649 default : return id;
1653 AVCodec *avcodec_find_encoder(enum CodecID id)
1655 AVCodec *p, *experimental=NULL;
1657 id= remap_deprecated_codec_id(id);
1659 if (av_codec_is_encoder(p) && p->id == id) {
1660 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1667 return experimental;
1670 AVCodec *avcodec_find_encoder_by_name(const char *name)
1677 if (av_codec_is_encoder(p) && strcmp(name,p->name) == 0)
1684 AVCodec *avcodec_find_decoder(enum CodecID id)
1686 AVCodec *p, *experimental=NULL;
1688 id= remap_deprecated_codec_id(id);
1690 if (av_codec_is_decoder(p) && p->id == id) {
1691 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1698 return experimental;
1701 AVCodec *avcodec_find_decoder_by_name(const char *name)
1708 if (av_codec_is_decoder(p) && strcmp(name,p->name) == 0)
1715 const char *avcodec_get_name(enum CodecID id)
1721 #include "libavcodec/codec_names.h"
1723 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1725 codec = avcodec_find_decoder(id);
1728 codec = avcodec_find_encoder(id);
1731 return "unknown_codec";
1734 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1736 int i, len, ret = 0;
1738 for (i = 0; i < 4; i++) {
1739 len = snprintf(buf, buf_size,
1740 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1742 buf_size = buf_size > len ? buf_size - len : 0;
1749 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1751 const char *codec_type;
1752 const char *codec_name;
1753 const char *profile = NULL;
1756 AVRational display_aspect_ratio;
1758 if (!buf || buf_size <= 0)
1760 codec_type = av_get_media_type_string(enc->codec_type);
1761 codec_name = avcodec_get_name(enc->codec_id);
1762 if (enc->profile != FF_PROFILE_UNKNOWN) {
1766 p = encode ? avcodec_find_encoder(enc->codec_id) :
1767 avcodec_find_decoder(enc->codec_id);
1769 profile = av_get_profile_name(p, enc->profile);
1772 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1773 codec_name, enc->mb_decision ? " (hq)" : "");
1774 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1776 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1777 if (enc->codec_tag) {
1779 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1780 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1781 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1783 switch(enc->codec_type) {
1784 case AVMEDIA_TYPE_VIDEO:
1785 if (enc->pix_fmt != PIX_FMT_NONE) {
1786 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1788 av_get_pix_fmt_name(enc->pix_fmt));
1791 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1793 enc->width, enc->height);
1794 if (enc->sample_aspect_ratio.num) {
1795 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1796 enc->width*enc->sample_aspect_ratio.num,
1797 enc->height*enc->sample_aspect_ratio.den,
1799 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1800 " [SAR %d:%d DAR %d:%d]",
1801 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1802 display_aspect_ratio.num, display_aspect_ratio.den);
1804 if(av_log_get_level() >= AV_LOG_DEBUG){
1805 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1806 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1808 enc->time_base.num/g, enc->time_base.den/g);
1812 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1813 ", q=%d-%d", enc->qmin, enc->qmax);
1816 case AVMEDIA_TYPE_AUDIO:
1817 if (enc->sample_rate) {
1818 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1819 ", %d Hz", enc->sample_rate);
1821 av_strlcat(buf, ", ", buf_size);
1822 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1823 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1824 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1825 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1832 if (enc->flags & CODEC_FLAG_PASS1)
1833 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1835 if (enc->flags & CODEC_FLAG_PASS2)
1836 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1839 bitrate = get_bit_rate(enc);
1841 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1842 ", %d kb/s", bitrate / 1000);
1846 const char *av_get_profile_name(const AVCodec *codec, int profile)
1849 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1852 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1853 if (p->profile == profile)
1859 unsigned avcodec_version( void )
1861 // av_assert0(CODEC_ID_V410==164);
1862 av_assert0(CODEC_ID_PCM_S8_PLANAR==65563);
1863 av_assert0(CODEC_ID_ADPCM_G722==69660);
1864 // av_assert0(CODEC_ID_BMV_AUDIO==86071);
1865 av_assert0(CODEC_ID_SRT==94216);
1866 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1868 return LIBAVCODEC_VERSION_INT;
1871 const char *avcodec_configuration(void)
1873 return FFMPEG_CONFIGURATION;
1876 const char *avcodec_license(void)
1878 #define LICENSE_PREFIX "libavcodec license: "
1879 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1882 void avcodec_flush_buffers(AVCodecContext *avctx)
1884 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1885 ff_thread_flush(avctx);
1886 else if(avctx->codec->flush)
1887 avctx->codec->flush(avctx);
1889 avctx->pts_correction_last_pts =
1890 avctx->pts_correction_last_dts = INT64_MIN;
1893 static void video_free_buffers(AVCodecContext *s)
1895 AVCodecInternal *avci = s->internal;
1901 if (avci->buffer_count)
1902 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1903 avci->buffer_count);
1904 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1905 InternalBuffer *buf = &avci->buffer[i];
1907 av_freep(&buf->base[j]);
1911 av_freep(&avci->buffer);
1913 avci->buffer_count=0;
1916 static void audio_free_buffers(AVCodecContext *avctx)
1918 AVCodecInternal *avci = avctx->internal;
1919 InternalBuffer *buf;
1925 if (buf->extended_data) {
1926 av_free(buf->extended_data[0]);
1927 if (buf->extended_data != buf->data)
1928 av_freep(&buf->extended_data);
1930 av_freep(&avci->buffer);
1933 void avcodec_default_free_buffers(AVCodecContext *avctx)
1935 switch (avctx->codec_type) {
1936 case AVMEDIA_TYPE_VIDEO:
1937 video_free_buffers(avctx);
1939 case AVMEDIA_TYPE_AUDIO:
1940 audio_free_buffers(avctx);
1947 int av_get_exact_bits_per_sample(enum CodecID codec_id)
1950 case CODEC_ID_ADPCM_CT:
1951 case CODEC_ID_ADPCM_IMA_APC:
1952 case CODEC_ID_ADPCM_IMA_EA_SEAD:
1953 case CODEC_ID_ADPCM_IMA_WS:
1954 case CODEC_ID_ADPCM_G722:
1955 case CODEC_ID_ADPCM_YAMAHA:
1957 case CODEC_ID_PCM_ALAW:
1958 case CODEC_ID_PCM_MULAW:
1959 case CODEC_ID_PCM_S8:
1960 case CODEC_ID_PCM_U8:
1961 case CODEC_ID_PCM_ZORK:
1963 case CODEC_ID_PCM_S16BE:
1964 case CODEC_ID_PCM_S16LE:
1965 case CODEC_ID_PCM_S16LE_PLANAR:
1966 case CODEC_ID_PCM_U16BE:
1967 case CODEC_ID_PCM_U16LE:
1969 case CODEC_ID_PCM_S24DAUD:
1970 case CODEC_ID_PCM_S24BE:
1971 case CODEC_ID_PCM_S24LE:
1972 case CODEC_ID_PCM_U24BE:
1973 case CODEC_ID_PCM_U24LE:
1975 case CODEC_ID_PCM_S32BE:
1976 case CODEC_ID_PCM_S32LE:
1977 case CODEC_ID_PCM_U32BE:
1978 case CODEC_ID_PCM_U32LE:
1979 case CODEC_ID_PCM_F32BE:
1980 case CODEC_ID_PCM_F32LE:
1982 case CODEC_ID_PCM_F64BE:
1983 case CODEC_ID_PCM_F64LE:
1990 enum CodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
1992 static const enum CodecID map[AV_SAMPLE_FMT_NB][2] = {
1993 [AV_SAMPLE_FMT_U8 ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 },
1994 [AV_SAMPLE_FMT_S16 ] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE },
1995 [AV_SAMPLE_FMT_S32 ] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE },
1996 [AV_SAMPLE_FMT_FLT ] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE },
1997 [AV_SAMPLE_FMT_DBL ] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE },
1998 [AV_SAMPLE_FMT_U8P ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 },
1999 [AV_SAMPLE_FMT_S16P] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE },
2000 [AV_SAMPLE_FMT_S32P] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE },
2001 [AV_SAMPLE_FMT_FLTP] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE },
2002 [AV_SAMPLE_FMT_DBLP] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE },
2004 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2005 return CODEC_ID_NONE;
2006 if (be < 0 || be > 1)
2008 return map[fmt][be];
2011 int av_get_bits_per_sample(enum CodecID codec_id)
2014 case CODEC_ID_ADPCM_SBPRO_2:
2016 case CODEC_ID_ADPCM_SBPRO_3:
2018 case CODEC_ID_ADPCM_SBPRO_4:
2019 case CODEC_ID_ADPCM_IMA_WAV:
2020 case CODEC_ID_ADPCM_IMA_QT:
2021 case CODEC_ID_ADPCM_SWF:
2022 case CODEC_ID_ADPCM_MS:
2025 return av_get_exact_bits_per_sample(codec_id);
2029 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2031 int id, sr, ch, ba, tag, bps;
2033 id = avctx->codec_id;
2034 sr = avctx->sample_rate;
2035 ch = avctx->channels;
2036 ba = avctx->block_align;
2037 tag = avctx->codec_tag;
2038 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2040 /* codecs with an exact constant bits per sample */
2041 if (bps > 0 && ch > 0 && frame_bytes > 0)
2042 return (frame_bytes * 8) / (bps * ch);
2043 bps = avctx->bits_per_coded_sample;
2045 /* codecs with a fixed packet duration */
2047 case CODEC_ID_ADPCM_ADX: return 32;
2048 case CODEC_ID_ADPCM_IMA_QT: return 64;
2049 case CODEC_ID_ADPCM_EA_XAS: return 128;
2050 case CODEC_ID_AMR_NB:
2052 case CODEC_ID_QCELP:
2053 case CODEC_ID_RA_144:
2054 case CODEC_ID_RA_288: return 160;
2055 case CODEC_ID_IMC: return 256;
2056 case CODEC_ID_AMR_WB:
2057 case CODEC_ID_GSM_MS: return 320;
2058 case CODEC_ID_MP1: return 384;
2059 case CODEC_ID_ATRAC1: return 512;
2060 case CODEC_ID_ATRAC3: return 1024;
2062 case CODEC_ID_MUSEPACK7: return 1152;
2063 case CODEC_ID_AC3: return 1536;
2067 /* calc from sample rate */
2068 if (id == CODEC_ID_TTA)
2069 return 256 * sr / 245;
2072 /* calc from sample rate and channels */
2073 if (id == CODEC_ID_BINKAUDIO_DCT)
2074 return (480 << (sr / 22050)) / ch;
2079 /* calc from block_align */
2080 if (id == CODEC_ID_SIPR) {
2082 case 20: return 160;
2083 case 19: return 144;
2084 case 29: return 288;
2085 case 37: return 480;
2090 if (frame_bytes > 0) {
2091 /* calc from frame_bytes only */
2092 if (id == CODEC_ID_TRUESPEECH)
2093 return 240 * (frame_bytes / 32);
2094 if (id == CODEC_ID_NELLYMOSER)
2095 return 256 * (frame_bytes / 64);
2098 /* calc from frame_bytes and bits_per_coded_sample */
2099 if (id == CODEC_ID_ADPCM_G726)
2100 return frame_bytes * 8 / bps;
2104 /* calc from frame_bytes and channels */
2106 case CODEC_ID_ADPCM_4XM:
2107 case CODEC_ID_ADPCM_IMA_ISS:
2108 return (frame_bytes - 4 * ch) * 2 / ch;
2109 case CODEC_ID_ADPCM_IMA_SMJPEG:
2110 return (frame_bytes - 4) * 2 / ch;
2111 case CODEC_ID_ADPCM_IMA_AMV:
2112 return (frame_bytes - 8) * 2 / ch;
2113 case CODEC_ID_ADPCM_XA:
2114 return (frame_bytes / 128) * 224 / ch;
2115 case CODEC_ID_INTERPLAY_DPCM:
2116 return (frame_bytes - 6 - ch) / ch;
2117 case CODEC_ID_ROQ_DPCM:
2118 return (frame_bytes - 8) / ch;
2119 case CODEC_ID_XAN_DPCM:
2120 return (frame_bytes - 2 * ch) / ch;
2121 case CODEC_ID_MACE3:
2122 return 3 * frame_bytes / ch;
2123 case CODEC_ID_MACE6:
2124 return 6 * frame_bytes / ch;
2125 case CODEC_ID_PCM_LXF:
2126 return 2 * (frame_bytes / (5 * ch));
2130 /* calc from frame_bytes, channels, and codec_tag */
2131 if (id == CODEC_ID_SOL_DPCM) {
2133 return frame_bytes / ch;
2135 return frame_bytes * 2 / ch;
2140 /* calc from frame_bytes, channels, and block_align */
2141 int blocks = frame_bytes / ba;
2142 switch (avctx->codec_id) {
2143 case CODEC_ID_ADPCM_IMA_WAV:
2144 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2145 case CODEC_ID_ADPCM_IMA_DK3:
2146 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2147 case CODEC_ID_ADPCM_IMA_DK4:
2148 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2149 case CODEC_ID_ADPCM_MS:
2150 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2155 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2156 switch (avctx->codec_id) {
2157 case CODEC_ID_PCM_DVD:
2158 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2159 case CODEC_ID_PCM_BLURAY:
2160 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2161 case CODEC_ID_S302M:
2162 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2172 int ff_thread_init(AVCodecContext *s){
2177 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2191 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
2193 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
2197 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2199 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
2200 "version to the newest one from Git. If the problem still "
2201 "occurs, it means that your file has a feature which has not "
2202 "been implemented.\n", feature);
2204 av_log_ask_for_sample(avc, NULL);
2207 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2209 va_list argument_list;
2211 va_start(argument_list, msg);
2214 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2215 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2216 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2217 "and contact the ffmpeg-devel mailing list.\n");
2219 va_end(argument_list);
2222 static AVHWAccel *first_hwaccel = NULL;
2224 void av_register_hwaccel(AVHWAccel *hwaccel)
2226 AVHWAccel **p = &first_hwaccel;
2230 hwaccel->next = NULL;
2233 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2235 return hwaccel ? hwaccel->next : first_hwaccel;
2238 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
2240 AVHWAccel *hwaccel=NULL;
2242 while((hwaccel= av_hwaccel_next(hwaccel))){
2243 if ( hwaccel->id == codec_id
2244 && hwaccel->pix_fmt == pix_fmt)
2250 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2252 if (ff_lockmgr_cb) {
2253 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2255 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2261 if (ff_lockmgr_cb) {
2262 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2264 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2270 int avpriv_lock_avformat(void)
2272 if (ff_lockmgr_cb) {
2273 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2279 int avpriv_unlock_avformat(void)
2281 if (ff_lockmgr_cb) {
2282 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2288 unsigned int avpriv_toupper4(unsigned int x)
2290 return toupper( x &0xFF)
2291 + (toupper((x>>8 )&0xFF)<<8 )
2292 + (toupper((x>>16)&0xFF)<<16)
2293 + (toupper((x>>24)&0xFF)<<24);
2298 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2302 ff_init_buffer_info(avctx, f);
2304 return avctx->get_buffer(avctx, f);
2307 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2309 f->owner->release_buffer(f->owner, f);
2312 void ff_thread_finish_setup(AVCodecContext *avctx)
2316 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2320 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2324 int ff_thread_can_start_frame(AVCodecContext *avctx)
2331 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
2333 AVCodec *c= avcodec_find_decoder(codec_id);
2335 c= avcodec_find_encoder(codec_id);
2339 if (codec_id <= CODEC_ID_NONE)
2340 return AVMEDIA_TYPE_UNKNOWN;
2341 else if (codec_id < CODEC_ID_FIRST_AUDIO)
2342 return AVMEDIA_TYPE_VIDEO;
2343 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
2344 return AVMEDIA_TYPE_AUDIO;
2345 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
2346 return AVMEDIA_TYPE_SUBTITLE;
2348 return AVMEDIA_TYPE_UNKNOWN;
2351 int avcodec_is_open(AVCodecContext *s)
2353 return !!s->internal;