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 "frame_thread_encoder.h"
44 #include "audioconvert.h"
46 #include "bytestream.h"
52 static int volatile entangled_thread_counter=0;
53 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
54 static void *codec_mutex;
55 static void *avformat_mutex;
57 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
62 min_size= FFMAX(17*min_size/16 + 32, min_size);
64 ptr= av_realloc(ptr, min_size);
65 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
73 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
78 min_size= FFMAX(17*min_size/16 + 32, min_size);
80 *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
81 if (!*p) min_size = 0;
86 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
88 ff_fast_malloc(ptr, size, min_size, 0);
91 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
94 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
99 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
100 memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
103 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
106 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
111 if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
112 memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
115 /* encoder management */
116 static AVCodec *first_avcodec = NULL;
118 AVCodec *av_codec_next(AVCodec *c){
119 if(c) return c->next;
120 else return first_avcodec;
123 static void avcodec_init(void)
125 static int initialized = 0;
127 if (initialized != 0)
131 ff_dsputil_static_init();
134 int av_codec_is_encoder(AVCodec *codec)
136 return codec && (codec->encode || codec->encode2);
139 int av_codec_is_decoder(AVCodec *codec)
141 return codec && codec->decode;
144 void avcodec_register(AVCodec *codec)
149 while (*p != NULL) p = &(*p)->next;
153 if (codec->init_static_data)
154 codec->init_static_data(codec);
157 unsigned avcodec_get_edge_width(void)
162 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
163 s->coded_width = width;
164 s->coded_height= height;
165 s->width = -((-width )>>s->lowres);
166 s->height= -((-height)>>s->lowres);
169 #define INTERNAL_BUFFER_SIZE (32+1)
171 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
172 int linesize_align[AV_NUM_DATA_POINTERS])
179 case PIX_FMT_YUV420P:
180 case PIX_FMT_YUYV422:
181 case PIX_FMT_UYVY422:
182 case PIX_FMT_YUV422P:
183 case PIX_FMT_YUV440P:
184 case PIX_FMT_YUV444P:
187 case PIX_FMT_GRAY16BE:
188 case PIX_FMT_GRAY16LE:
189 case PIX_FMT_YUVJ420P:
190 case PIX_FMT_YUVJ422P:
191 case PIX_FMT_YUVJ440P:
192 case PIX_FMT_YUVJ444P:
193 case PIX_FMT_YUVA420P:
194 case PIX_FMT_YUVA422P:
195 case PIX_FMT_YUVA444P:
196 case PIX_FMT_YUV420P9LE:
197 case PIX_FMT_YUV420P9BE:
198 case PIX_FMT_YUV420P10LE:
199 case PIX_FMT_YUV420P10BE:
200 case PIX_FMT_YUV420P12LE:
201 case PIX_FMT_YUV420P12BE:
202 case PIX_FMT_YUV420P14LE:
203 case PIX_FMT_YUV420P14BE:
204 case PIX_FMT_YUV422P9LE:
205 case PIX_FMT_YUV422P9BE:
206 case PIX_FMT_YUV422P10LE:
207 case PIX_FMT_YUV422P10BE:
208 case PIX_FMT_YUV422P12LE:
209 case PIX_FMT_YUV422P12BE:
210 case PIX_FMT_YUV422P14LE:
211 case PIX_FMT_YUV422P14BE:
212 case PIX_FMT_YUV444P9LE:
213 case PIX_FMT_YUV444P9BE:
214 case PIX_FMT_YUV444P10LE:
215 case PIX_FMT_YUV444P10BE:
216 case PIX_FMT_YUV444P12LE:
217 case PIX_FMT_YUV444P12BE:
218 case PIX_FMT_YUV444P14LE:
219 case PIX_FMT_YUV444P14BE:
220 case PIX_FMT_GBRP9LE:
221 case PIX_FMT_GBRP9BE:
222 case PIX_FMT_GBRP10LE:
223 case PIX_FMT_GBRP10BE:
224 case PIX_FMT_GBRP12LE:
225 case PIX_FMT_GBRP12BE:
226 case PIX_FMT_GBRP14LE:
227 case PIX_FMT_GBRP14BE:
228 w_align = 16; //FIXME assume 16 pixel per macroblock
229 h_align = 16 * 2; // interlaced needs 2 macroblocks height
231 case PIX_FMT_YUV411P:
232 case PIX_FMT_UYYVYY411:
236 case PIX_FMT_YUV410P:
237 if(s->codec_id == CODEC_ID_SVQ1){
242 if(s->codec_id == CODEC_ID_RPZA){
249 if(s->codec_id == CODEC_ID_SMC){
255 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
266 if(s->codec_id == CODEC_ID_IFF_ILBM || s->codec_id == CODEC_ID_IFF_BYTERUN1){
267 w_align= FFMAX(w_align, 8);
270 *width = FFALIGN(*width , w_align);
271 *height= FFALIGN(*height, h_align);
272 if(s->codec_id == CODEC_ID_H264 || s->lowres)
273 *height+=2; // some of the optimized chroma MC reads one line too much
274 // which is also done in mpeg decoders with lowres > 0
276 for (i = 0; i < 4; i++)
277 linesize_align[i] = STRIDE_ALIGN;
280 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
281 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
282 int linesize_align[AV_NUM_DATA_POINTERS];
284 avcodec_align_dimensions2(s, width, height, linesize_align);
285 align = FFMAX(linesize_align[0], linesize_align[3]);
286 linesize_align[1] <<= chroma_shift;
287 linesize_align[2] <<= chroma_shift;
288 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
289 *width=FFALIGN(*width, align);
292 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic)
295 pic->pkt_pts = s->pkt->pts;
296 pic->pkt_pos = s->pkt->pos;
297 pic->pkt_duration = s->pkt->duration;
299 pic->pkt_pts = AV_NOPTS_VALUE;
301 pic->pkt_duration = 0;
303 pic->reordered_opaque= s->reordered_opaque;
304 pic->sample_aspect_ratio = s->sample_aspect_ratio;
305 pic->width = s->width;
306 pic->height = s->height;
307 pic->format = s->pix_fmt;
310 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
311 enum AVSampleFormat sample_fmt, const uint8_t *buf,
312 int buf_size, int align)
314 int ch, planar, needed_size, ret = 0;
316 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
317 frame->nb_samples, sample_fmt,
319 if (buf_size < needed_size)
320 return AVERROR(EINVAL);
322 planar = av_sample_fmt_is_planar(sample_fmt);
323 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
324 if (!(frame->extended_data = av_mallocz(nb_channels *
325 sizeof(*frame->extended_data))))
326 return AVERROR(ENOMEM);
328 frame->extended_data = frame->data;
331 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
332 (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
333 sample_fmt, align)) < 0) {
334 if (frame->extended_data != frame->data)
335 av_freep(&frame->extended_data);
338 if (frame->extended_data != frame->data) {
339 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
340 frame->data[ch] = frame->extended_data[ch];
346 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
348 AVCodecInternal *avci = avctx->internal;
352 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
353 frame->nb_samples, avctx->sample_fmt,
356 return AVERROR(EINVAL);
358 /* allocate InternalBuffer if needed */
360 avci->buffer = av_mallocz(sizeof(InternalBuffer));
362 return AVERROR(ENOMEM);
366 /* if there is a previously-used internal buffer, check its size and
367 channel count to see if we can reuse it */
368 if (buf->extended_data) {
369 /* if current buffer is too small, free it */
370 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
371 av_free(buf->extended_data[0]);
372 if (buf->extended_data != buf->data)
373 av_freep(&buf->extended_data);
374 buf->extended_data = NULL;
377 /* if number of channels has changed, reset and/or free extended data
378 pointers but leave data buffer in buf->data[0] for reuse */
379 if (buf->nb_channels != avctx->channels) {
380 if (buf->extended_data != buf->data)
381 av_free(buf->extended_data);
382 buf->extended_data = NULL;
386 /* if there is no previous buffer or the previous buffer cannot be used
387 as-is, allocate a new buffer and/or rearrange the channel pointers */
388 if (!buf->extended_data) {
390 if (!(buf->data[0] = av_mallocz(buf_size)))
391 return AVERROR(ENOMEM);
392 buf->audio_data_size = buf_size;
394 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
395 avctx->sample_fmt, buf->data[0],
396 buf->audio_data_size, 0)))
399 if (frame->extended_data == frame->data)
400 buf->extended_data = buf->data;
402 buf->extended_data = frame->extended_data;
403 memcpy(buf->data, frame->data, sizeof(frame->data));
404 buf->linesize[0] = frame->linesize[0];
405 buf->nb_channels = avctx->channels;
407 /* copy InternalBuffer info to the AVFrame */
408 frame->extended_data = buf->extended_data;
409 frame->linesize[0] = buf->linesize[0];
410 memcpy(frame->data, buf->data, sizeof(frame->data));
413 frame->type = FF_BUFFER_TYPE_INTERNAL;
416 frame->pkt_pts = avctx->pkt->pts;
417 frame->pkt_pos = avctx->pkt->pos;
418 frame->pkt_duration = avctx->pkt->duration;
420 frame->pkt_pts = AV_NOPTS_VALUE;
422 frame->pkt_duration = 0;
425 frame->reordered_opaque = avctx->reordered_opaque;
427 frame->sample_rate = avctx->sample_rate;
428 frame->format = avctx->sample_fmt;
429 frame->channel_layout = avctx->channel_layout;
431 if (avctx->debug & FF_DEBUG_BUFFERS)
432 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
433 "internal audio buffer used\n", frame);
438 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
444 AVCodecInternal *avci = s->internal;
446 if(pic->data[0]!=NULL) {
447 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
450 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
451 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
455 if(av_image_check_size(w, h, 0, s) || s->pix_fmt<0) {
456 av_log(s, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
461 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
462 sizeof(InternalBuffer));
465 buf = &avci->buffer[avci->buffer_count];
467 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
468 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
469 av_freep(&buf->base[i]);
475 int h_chroma_shift, v_chroma_shift;
480 int stride_align[AV_NUM_DATA_POINTERS];
481 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
483 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
485 avcodec_align_dimensions2(s, &w, &h, stride_align);
487 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
493 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
494 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
495 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
496 // increase alignment of w for next try (rhs gives the lowest bit set in w)
501 unaligned |= picture.linesize[i] % stride_align[i];
505 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
509 for (i=0; i<3 && picture.data[i+1]; i++)
510 size[i] = picture.data[i+1] - picture.data[i];
511 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
513 memset(buf->base, 0, sizeof(buf->base));
514 memset(buf->data, 0, sizeof(buf->data));
516 for(i=0; i<4 && size[i]; i++){
517 const int h_shift= i==0 ? 0 : h_chroma_shift;
518 const int v_shift= i==0 ? 0 : v_chroma_shift;
520 buf->linesize[i]= picture.linesize[i];
522 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
523 if(buf->base[i]==NULL)
524 return AVERROR(ENOMEM);
525 memset(buf->base[i], 128, size[i]);
527 // no edge if EDGE EMU or not planar YUV
528 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
529 buf->data[i] = buf->base[i];
531 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
533 for (; i < AV_NUM_DATA_POINTERS; i++) {
534 buf->base[i] = buf->data[i] = NULL;
535 buf->linesize[i] = 0;
537 if(size[1] && !size[2])
538 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
539 buf->width = s->width;
540 buf->height = s->height;
541 buf->pix_fmt= s->pix_fmt;
543 pic->type= FF_BUFFER_TYPE_INTERNAL;
545 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
546 pic->base[i]= buf->base[i];
547 pic->data[i]= buf->data[i];
548 pic->linesize[i]= buf->linesize[i];
550 pic->extended_data = pic->data;
551 avci->buffer_count++;
552 pic->width = buf->width;
553 pic->height = buf->height;
554 pic->format = buf->pix_fmt;
555 pic->sample_aspect_ratio = s->sample_aspect_ratio;
558 pic->pkt_pts = s->pkt->pts;
559 pic->pkt_pos = s->pkt->pos;
560 pic->pkt_duration = s->pkt->duration;
562 pic->pkt_pts = AV_NOPTS_VALUE;
564 pic->pkt_duration = 0;
566 pic->reordered_opaque= s->reordered_opaque;
567 pic->sample_aspect_ratio = s->sample_aspect_ratio;
568 pic->width = s->width;
569 pic->height = s->height;
570 pic->format = s->pix_fmt;
572 if(s->debug&FF_DEBUG_BUFFERS)
573 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
574 "buffers used\n", pic, avci->buffer_count);
579 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
581 switch (avctx->codec_type) {
582 case AVMEDIA_TYPE_VIDEO:
583 return video_get_buffer(avctx, frame);
584 case AVMEDIA_TYPE_AUDIO:
585 return audio_get_buffer(avctx, frame);
591 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
593 InternalBuffer *buf, *last;
594 AVCodecInternal *avci = s->internal;
596 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
598 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
599 assert(avci->buffer_count);
602 buf = NULL; /* avoids warning */
603 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
604 buf = &avci->buffer[i];
605 if (buf->data[0] == pic->data[0])
608 av_assert0(i < avci->buffer_count);
609 avci->buffer_count--;
610 last = &avci->buffer[avci->buffer_count];
613 FFSWAP(InternalBuffer, *buf, *last);
616 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
618 // pic->base[i]=NULL;
620 //printf("R%X\n", pic->opaque);
622 if(s->debug&FF_DEBUG_BUFFERS)
623 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
624 "buffers used\n", pic, avci->buffer_count);
627 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
631 av_assert0(s->codec_type == AVMEDIA_TYPE_VIDEO);
633 if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) {
634 av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
635 pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt));
636 s->release_buffer(s, pic);
639 ff_init_buffer_info(s, pic);
641 /* If no picture return a new buffer */
642 if(pic->data[0] == NULL) {
643 /* We will copy from buffer, so must be readable */
644 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
645 return s->get_buffer(s, pic);
648 assert(s->pix_fmt == pic->format);
650 /* If internal buffer type return the same buffer */
651 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
656 * Not internal type and reget_buffer not overridden, emulate cr buffer
659 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
660 pic->data[i] = pic->base[i] = NULL;
662 /* Allocate new frame */
663 if (s->get_buffer(s, pic))
665 /* Copy image data from old buffer to new buffer */
666 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
668 s->release_buffer(s, &temp_pic); // Release old frame
672 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
675 for(i=0; i<count; i++){
676 int r= func(c, (char*)arg + i*size);
682 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
685 for(i=0; i<count; i++){
686 int r= func(c, arg, i, 0);
692 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
693 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
698 void avcodec_get_frame_defaults(AVFrame *pic){
699 memset(pic, 0, sizeof(AVFrame));
701 pic->pts = pic->pkt_dts = pic->pkt_pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
702 pic->pkt_duration = 0;
705 pic->sample_aspect_ratio = (AVRational){0, 1};
706 pic->format = -1; /* unknown */
709 AVFrame *avcodec_alloc_frame(void){
710 AVFrame *pic= av_malloc(sizeof(AVFrame));
712 if(pic==NULL) return NULL;
714 avcodec_get_frame_defaults(pic);
719 #define MAKE_ACCESSORS(str, name, type, field) \
720 type av_##name##_get_##field(const str *s) { return s->field; } \
721 void av_##name##_set_##field(str *s, type v) { s->field = v; }
723 MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp)
724 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration)
725 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos)
726 MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout)
727 MAKE_ACCESSORS(AVFrame, frame, int, sample_rate)
728 MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
729 MAKE_ACCESSORS(AVFrame, frame, int, decode_error_flags)
731 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
733 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
735 memset(sub, 0, sizeof(*sub));
736 sub->pts = AV_NOPTS_VALUE;
739 static int get_bit_rate(AVCodecContext *ctx)
744 switch(ctx->codec_type) {
745 case AVMEDIA_TYPE_VIDEO:
746 case AVMEDIA_TYPE_DATA:
747 case AVMEDIA_TYPE_SUBTITLE:
748 case AVMEDIA_TYPE_ATTACHMENT:
749 bit_rate = ctx->bit_rate;
751 case AVMEDIA_TYPE_AUDIO:
752 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
753 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
762 #if FF_API_AVCODEC_OPEN
763 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
765 return avcodec_open2(avctx, codec, NULL);
769 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
772 AVDictionary *tmp = NULL;
774 if (avcodec_is_open(avctx))
777 if ((!codec && !avctx->codec)) {
778 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
779 return AVERROR(EINVAL);
781 if ((codec && avctx->codec && codec != avctx->codec)) {
782 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
783 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
784 return AVERROR(EINVAL);
787 codec = avctx->codec;
789 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
790 return AVERROR(EINVAL);
793 av_dict_copy(&tmp, *options, 0);
795 /* If there is a user-supplied mutex locking routine, call it. */
797 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
801 entangled_thread_counter++;
802 if(entangled_thread_counter != 1){
803 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
808 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
809 if (!avctx->internal) {
810 ret = AVERROR(ENOMEM);
814 if (codec->priv_data_size > 0) {
815 if(!avctx->priv_data){
816 avctx->priv_data = av_mallocz(codec->priv_data_size);
817 if (!avctx->priv_data) {
818 ret = AVERROR(ENOMEM);
821 if (codec->priv_class) {
822 *(const AVClass**)avctx->priv_data= codec->priv_class;
823 av_opt_set_defaults(avctx->priv_data);
826 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
829 avctx->priv_data = NULL;
831 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
834 if (codec->capabilities & CODEC_CAP_EXPERIMENTAL)
835 if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
836 av_log(avctx, AV_LOG_ERROR, "Codec is experimental but experimental codecs are not enabled, try -strict -2\n");
841 //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
842 if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){
843 if(avctx->coded_width && avctx->coded_height)
844 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
845 else if(avctx->width && avctx->height)
846 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
849 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
850 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
851 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
852 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
853 avcodec_set_dimensions(avctx, 0, 0);
856 /* if the decoder init function was already called previously,
857 free the already allocated subtitle_header before overwriting it */
858 if (av_codec_is_decoder(codec))
859 av_freep(&avctx->subtitle_header);
861 #define SANE_NB_CHANNELS 128U
862 if (avctx->channels > SANE_NB_CHANNELS) {
863 ret = AVERROR(EINVAL);
867 avctx->codec = codec;
868 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
869 avctx->codec_id == CODEC_ID_NONE) {
870 avctx->codec_type = codec->type;
871 avctx->codec_id = codec->id;
873 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
874 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
875 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
876 ret = AVERROR(EINVAL);
879 avctx->frame_number = 0;
881 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
882 (!avctx->time_base.num || !avctx->time_base.den)) {
883 avctx->time_base.num = 1;
884 avctx->time_base.den = avctx->sample_rate;
888 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
890 entangled_thread_counter--; //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
891 ret = ff_frame_thread_encoder_init(avctx);
892 entangled_thread_counter++;
896 if (HAVE_THREADS && !avctx->thread_opaque
897 && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
898 ret = ff_thread_init(avctx);
903 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
904 avctx->thread_count = 1;
906 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
907 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
908 avctx->codec->max_lowres);
909 ret = AVERROR(EINVAL);
913 if (av_codec_is_encoder(avctx->codec)) {
915 if (avctx->codec->sample_fmts) {
916 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
917 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
919 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
920 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
921 ret = AVERROR(EINVAL);
925 if (avctx->codec->pix_fmts) {
926 for (i = 0; avctx->codec->pix_fmts[i] != PIX_FMT_NONE; i++)
927 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
929 if (avctx->codec->pix_fmts[i] == PIX_FMT_NONE
930 && !((avctx->codec_id == CODEC_ID_MJPEG || avctx->codec_id == CODEC_ID_LJPEG)
931 && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
932 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
933 ret = AVERROR(EINVAL);
937 if (avctx->codec->supported_samplerates) {
938 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
939 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
941 if (avctx->codec->supported_samplerates[i] == 0) {
942 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
943 ret = AVERROR(EINVAL);
947 if (avctx->codec->channel_layouts) {
948 if (!avctx->channel_layout) {
949 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
951 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
952 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
954 if (avctx->codec->channel_layouts[i] == 0) {
955 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
956 ret = AVERROR(EINVAL);
961 if (avctx->channel_layout && avctx->channels) {
962 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
963 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
964 ret = AVERROR(EINVAL);
967 } else if (avctx->channel_layout) {
968 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
972 avctx->pts_correction_num_faulty_pts =
973 avctx->pts_correction_num_faulty_dts = 0;
974 avctx->pts_correction_last_pts =
975 avctx->pts_correction_last_dts = INT64_MIN;
977 if(avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME) || avctx->internal->frame_thread_encoder)){
978 ret = avctx->codec->init(avctx);
986 if (av_codec_is_decoder(avctx->codec)) {
987 if (!avctx->bit_rate)
988 avctx->bit_rate = get_bit_rate(avctx);
989 /* validate channel layout from the decoder */
990 if (avctx->channel_layout &&
991 av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
992 av_log(avctx, AV_LOG_WARNING, "channel layout does not match number of channels\n");
993 avctx->channel_layout = 0;
997 entangled_thread_counter--;
999 /* Release any user-supplied mutex. */
1000 if (ff_lockmgr_cb) {
1001 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1004 av_dict_free(options);
1011 av_freep(&avctx->priv_data);
1012 av_freep(&avctx->internal);
1017 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int size)
1019 if (size < 0 || avpkt->size < 0 || size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
1020 av_log(avctx, AV_LOG_ERROR, "Size %d invalid\n", size);
1021 return AVERROR(EINVAL);
1025 av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1026 if (!avpkt->data || avpkt->size < size) {
1027 av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size);
1028 avpkt->data = avctx->internal->byte_buffer;
1029 avpkt->size = avctx->internal->byte_buffer_size;
1030 avpkt->destruct = NULL;
1035 void *destruct = avpkt->destruct;
1037 if (avpkt->size < size) {
1038 av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %d)\n", avpkt->size, size);
1039 return AVERROR(EINVAL);
1042 av_init_packet(avpkt);
1043 avpkt->destruct = destruct;
1047 int ret = av_new_packet(avpkt, size);
1049 av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", size);
1054 int ff_alloc_packet(AVPacket *avpkt, int size)
1056 return ff_alloc_packet2(NULL, avpkt, size);
1060 * Pad last frame with silence.
1062 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1064 AVFrame *frame = NULL;
1065 uint8_t *buf = NULL;
1068 if (!(frame = avcodec_alloc_frame()))
1069 return AVERROR(ENOMEM);
1072 if ((ret = av_samples_get_buffer_size(&frame->linesize[0], s->channels,
1073 s->frame_size, s->sample_fmt, 0)) < 0)
1076 if (!(buf = av_malloc(ret))) {
1077 ret = AVERROR(ENOMEM);
1081 frame->nb_samples = s->frame_size;
1082 if ((ret = avcodec_fill_audio_frame(frame, s->channels, s->sample_fmt,
1085 if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1086 src->nb_samples, s->channels, s->sample_fmt)) < 0)
1088 if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1089 frame->nb_samples - src->nb_samples,
1090 s->channels, s->sample_fmt)) < 0)
1098 if (frame->extended_data != frame->data)
1099 av_freep(&frame->extended_data);
1105 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1107 const AVFrame *frame,
1108 int *got_packet_ptr)
1111 AVFrame *padded_frame = NULL;
1113 AVPacket user_pkt = *avpkt;
1114 int needs_realloc = !user_pkt.data;
1116 *got_packet_ptr = 0;
1118 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1119 av_free_packet(avpkt);
1120 av_init_packet(avpkt);
1124 /* ensure that extended_data is properly set */
1125 if (frame && !frame->extended_data) {
1126 if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1127 avctx->channels > AV_NUM_DATA_POINTERS) {
1128 av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1129 "with more than %d channels, but extended_data is not set.\n",
1130 AV_NUM_DATA_POINTERS);
1131 return AVERROR(EINVAL);
1133 av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1136 tmp.extended_data = tmp.data;
1140 /* check for valid frame size */
1142 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1143 if (frame->nb_samples > avctx->frame_size) {
1144 av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1145 return AVERROR(EINVAL);
1147 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1148 if (frame->nb_samples < avctx->frame_size &&
1149 !avctx->internal->last_audio_frame) {
1150 ret = pad_last_frame(avctx, &padded_frame, frame);
1154 frame = padded_frame;
1155 avctx->internal->last_audio_frame = 1;
1158 if (frame->nb_samples != avctx->frame_size) {
1159 av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1160 return AVERROR(EINVAL);
1165 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1167 if (*got_packet_ptr) {
1168 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1169 if (avpkt->pts == AV_NOPTS_VALUE)
1170 avpkt->pts = frame->pts;
1171 if (!avpkt->duration)
1172 avpkt->duration = ff_samples_to_time_base(avctx,
1175 avpkt->dts = avpkt->pts;
1180 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1182 if (user_pkt.data) {
1183 if (user_pkt.size >= avpkt->size) {
1184 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1186 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1187 avpkt->size = user_pkt.size;
1190 avpkt->data = user_pkt.data;
1191 avpkt->destruct = user_pkt.destruct;
1193 if (av_dup_packet(avpkt) < 0) {
1194 ret = AVERROR(ENOMEM);
1200 if (needs_realloc && avpkt->data) {
1201 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1203 avpkt->data = new_data;
1206 avctx->frame_number++;
1209 if (ret < 0 || !*got_packet_ptr) {
1210 av_free_packet(avpkt);
1211 av_init_packet(avpkt);
1215 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1216 this needs to be moved to the encoders, but for now we can do it
1217 here to simplify things */
1218 avpkt->flags |= AV_PKT_FLAG_KEY;
1221 av_freep(&padded_frame->data[0]);
1222 if (padded_frame->extended_data != padded_frame->data)
1223 av_freep(&padded_frame->extended_data);
1224 av_freep(&padded_frame);
1230 #if FF_API_OLD_DECODE_AUDIO
1231 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1232 uint8_t *buf, int buf_size,
1233 const short *samples)
1238 int ret, samples_size, got_packet;
1240 av_init_packet(&pkt);
1242 pkt.size = buf_size;
1246 avcodec_get_frame_defaults(frame);
1248 if (avctx->frame_size) {
1249 frame->nb_samples = avctx->frame_size;
1251 /* if frame_size is not set, the number of samples must be
1252 calculated from the buffer size */
1254 if (!av_get_bits_per_sample(avctx->codec_id)) {
1255 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1256 "support this codec\n");
1257 return AVERROR(EINVAL);
1259 nb_samples = (int64_t)buf_size * 8 /
1260 (av_get_bits_per_sample(avctx->codec_id) *
1262 if (nb_samples >= INT_MAX)
1263 return AVERROR(EINVAL);
1264 frame->nb_samples = nb_samples;
1267 /* it is assumed that the samples buffer is large enough based on the
1268 relevant parameters */
1269 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1271 avctx->sample_fmt, 1);
1272 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1274 (const uint8_t *) samples,
1278 /* fabricate frame pts from sample count.
1279 this is needed because the avcodec_encode_audio() API does not have
1280 a way for the user to provide pts */
1281 if(avctx->sample_rate && avctx->time_base.num)
1282 frame->pts = ff_samples_to_time_base(avctx,
1283 avctx->internal->sample_count);
1285 frame->pts = AV_NOPTS_VALUE;
1286 avctx->internal->sample_count += frame->nb_samples;
1292 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1293 if (!ret && got_packet && avctx->coded_frame) {
1294 avctx->coded_frame->pts = pkt.pts;
1295 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1297 /* free any side data since we cannot return it */
1298 ff_packet_free_side_data(&pkt);
1300 if (frame && frame->extended_data != frame->data)
1301 av_freep(&frame->extended_data);
1303 return ret ? ret : pkt.size;
1307 #if FF_API_OLD_ENCODE_VIDEO
1308 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1309 const AVFrame *pict)
1312 int ret, got_packet = 0;
1314 if(buf_size < FF_MIN_BUFFER_SIZE){
1315 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1319 av_init_packet(&pkt);
1321 pkt.size = buf_size;
1323 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1324 if (!ret && got_packet && avctx->coded_frame) {
1325 avctx->coded_frame->pts = pkt.pts;
1326 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1329 /* free any side data since we cannot return it */
1330 if (pkt.side_data_elems > 0) {
1332 for (i = 0; i < pkt.side_data_elems; i++)
1333 av_free(pkt.side_data[i].data);
1334 av_freep(&pkt.side_data);
1335 pkt.side_data_elems = 0;
1338 return ret ? ret : pkt.size;
1342 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1344 const AVFrame *frame,
1345 int *got_packet_ptr)
1348 AVPacket user_pkt = *avpkt;
1349 int needs_realloc = !user_pkt.data;
1351 *got_packet_ptr = 0;
1353 if(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))
1354 return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1356 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1357 av_free_packet(avpkt);
1358 av_init_packet(avpkt);
1363 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1364 return AVERROR(EINVAL);
1366 av_assert0(avctx->codec->encode2);
1368 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1369 av_assert0(ret <= 0);
1371 if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1373 if (user_pkt.data) {
1374 if (user_pkt.size >= avpkt->size) {
1375 memcpy(user_pkt.data, avpkt->data, avpkt->size);
1377 av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1378 avpkt->size = user_pkt.size;
1381 avpkt->data = user_pkt.data;
1382 avpkt->destruct = user_pkt.destruct;
1384 if (av_dup_packet(avpkt) < 0) {
1385 ret = AVERROR(ENOMEM);
1391 if (!*got_packet_ptr)
1393 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1394 avpkt->pts = avpkt->dts = frame->pts;
1396 if (needs_realloc && avpkt->data &&
1397 avpkt->destruct == av_destruct_packet) {
1398 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1400 avpkt->data = new_data;
1403 avctx->frame_number++;
1406 if (ret < 0 || !*got_packet_ptr)
1407 av_free_packet(avpkt);
1413 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1414 const AVSubtitle *sub)
1417 if(sub->start_display_time) {
1418 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1422 ret = avctx->codec->encode(avctx, buf, buf_size, (void *)(intptr_t)sub);
1423 avctx->frame_number++;
1428 * Attempt to guess proper monotonic timestamps for decoded video frames
1429 * which might have incorrect times. Input timestamps may wrap around, in
1430 * which case the output will as well.
1432 * @param pts the pts field of the decoded AVPacket, as passed through
1434 * @param dts the dts field of the decoded AVPacket
1435 * @return one of the input values, may be AV_NOPTS_VALUE
1437 static int64_t guess_correct_pts(AVCodecContext *ctx,
1438 int64_t reordered_pts, int64_t dts)
1440 int64_t pts = AV_NOPTS_VALUE;
1442 if (dts != AV_NOPTS_VALUE) {
1443 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1444 ctx->pts_correction_last_dts = dts;
1446 if (reordered_pts != AV_NOPTS_VALUE) {
1447 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1448 ctx->pts_correction_last_pts = reordered_pts;
1450 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1451 && reordered_pts != AV_NOPTS_VALUE)
1452 pts = reordered_pts;
1459 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1462 const uint8_t *data;
1465 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1468 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1469 if (!data || size < 4)
1471 flags = bytestream_get_le32(&data);
1473 if (size < 4) /* Required for any of the changes */
1475 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1476 avctx->channels = bytestream_get_le32(&data);
1479 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1482 avctx->channel_layout = bytestream_get_le64(&data);
1487 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1488 avctx->sample_rate = bytestream_get_le32(&data);
1491 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1494 avctx->width = bytestream_get_le32(&data);
1495 avctx->height = bytestream_get_le32(&data);
1496 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1501 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1502 int *got_picture_ptr,
1503 const AVPacket *avpkt)
1506 // copy to ensure we do not change avpkt
1507 AVPacket tmp = *avpkt;
1509 if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
1510 av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
1511 return AVERROR(EINVAL);
1514 *got_picture_ptr= 0;
1515 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1516 return AVERROR(EINVAL);
1518 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1519 int did_split = av_packet_split_side_data(&tmp);
1520 apply_param_change(avctx, &tmp);
1522 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1523 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1526 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1528 picture->pkt_dts= avpkt->dts;
1530 if(!avctx->has_b_frames){
1531 picture->pkt_pos= avpkt->pos;
1533 //FIXME these should be under if(!avctx->has_b_frames)
1534 if (!picture->sample_aspect_ratio.num)
1535 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1536 if (!picture->width)
1537 picture->width = avctx->width;
1538 if (!picture->height)
1539 picture->height = avctx->height;
1540 if (picture->format == PIX_FMT_NONE)
1541 picture->format = avctx->pix_fmt;
1544 emms_c(); //needed to avoid an emms_c() call before every return;
1548 ff_packet_free_side_data(&tmp);
1553 if (*got_picture_ptr){
1554 avctx->frame_number++;
1555 picture->best_effort_timestamp = guess_correct_pts(avctx,
1565 #if FF_API_OLD_DECODE_AUDIO
1566 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1567 int *frame_size_ptr,
1571 int ret, got_frame = 0;
1573 if (avctx->get_buffer != avcodec_default_get_buffer) {
1574 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1575 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1576 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1577 "avcodec_decode_audio4()\n");
1578 avctx->get_buffer = avcodec_default_get_buffer;
1579 avctx->release_buffer = avcodec_default_release_buffer;
1582 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1584 if (ret >= 0 && got_frame) {
1586 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1587 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1589 avctx->sample_fmt, 1);
1590 if (*frame_size_ptr < data_size) {
1591 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1592 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1593 return AVERROR(EINVAL);
1596 memcpy(samples, frame.extended_data[0], plane_size);
1598 if (planar && avctx->channels > 1) {
1599 uint8_t *out = ((uint8_t *)samples) + plane_size;
1600 for (ch = 1; ch < avctx->channels; ch++) {
1601 memcpy(out, frame.extended_data[ch], plane_size);
1605 *frame_size_ptr = data_size;
1607 *frame_size_ptr = 0;
1613 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1616 const AVPacket *avpkt)
1622 if (!avpkt->data && avpkt->size) {
1623 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1624 return AVERROR(EINVAL);
1626 if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
1627 av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
1628 return AVERROR(EINVAL);
1631 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1634 // copy to ensure we do not change avpkt
1635 AVPacket tmp = *avpkt;
1636 int did_split = av_packet_split_side_data(&tmp);
1637 apply_param_change(avctx, &tmp);
1640 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
1641 if (ret >= 0 && *got_frame_ptr) {
1642 avctx->frame_number++;
1643 frame->pkt_dts = avpkt->dts;
1644 frame->best_effort_timestamp = guess_correct_pts(avctx,
1647 if (frame->format == AV_SAMPLE_FMT_NONE)
1648 frame->format = avctx->sample_fmt;
1649 if (!frame->channel_layout)
1650 frame->channel_layout = avctx->channel_layout;
1651 if (!frame->sample_rate)
1652 frame->sample_rate = avctx->sample_rate;
1655 side= av_packet_get_side_data(avctx->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
1656 if(side && side_size>=10) {
1657 avctx->internal->skip_samples = AV_RL32(side);
1658 av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
1659 avctx->internal->skip_samples);
1661 if (avctx->internal->skip_samples) {
1662 if(frame->nb_samples <= avctx->internal->skip_samples){
1664 avctx->internal->skip_samples -= frame->nb_samples;
1665 av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
1666 avctx->internal->skip_samples);
1668 av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
1669 frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
1670 if(avctx->pkt_timebase.num && avctx->sample_rate) {
1671 int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
1672 (AVRational){1, avctx->sample_rate},
1673 avctx->pkt_timebase);
1674 if(frame->pkt_pts!=AV_NOPTS_VALUE)
1675 frame->pkt_pts += diff_ts;
1676 if(frame->pkt_dts!=AV_NOPTS_VALUE)
1677 frame->pkt_dts += diff_ts;
1678 if (frame->pkt_duration >= diff_ts)
1679 frame->pkt_duration -= diff_ts;
1681 av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
1683 av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
1684 avctx->internal->skip_samples, frame->nb_samples);
1685 frame->nb_samples -= avctx->internal->skip_samples;
1686 avctx->internal->skip_samples = 0;
1692 ff_packet_free_side_data(&tmp);
1700 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1706 if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1707 av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1708 return AVERROR(EINVAL);
1713 avcodec_get_subtitle_defaults(sub);
1714 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1716 avctx->frame_number++;
1720 void avsubtitle_free(AVSubtitle *sub)
1724 for (i = 0; i < sub->num_rects; i++)
1726 av_freep(&sub->rects[i]->pict.data[0]);
1727 av_freep(&sub->rects[i]->pict.data[1]);
1728 av_freep(&sub->rects[i]->pict.data[2]);
1729 av_freep(&sub->rects[i]->pict.data[3]);
1730 av_freep(&sub->rects[i]->text);
1731 av_freep(&sub->rects[i]->ass);
1732 av_freep(&sub->rects[i]);
1735 av_freep(&sub->rects);
1737 memset(sub, 0, sizeof(AVSubtitle));
1740 av_cold int avcodec_close(AVCodecContext *avctx)
1742 /* If there is a user-supplied mutex locking routine, call it. */
1743 if (ff_lockmgr_cb) {
1744 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1748 entangled_thread_counter++;
1749 if(entangled_thread_counter != 1){
1750 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1751 entangled_thread_counter--;
1755 if (avcodec_is_open(avctx)) {
1756 if (avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
1757 entangled_thread_counter --;
1758 ff_frame_thread_encoder_free(avctx);
1759 entangled_thread_counter ++;
1761 if (HAVE_THREADS && avctx->thread_opaque)
1762 ff_thread_free(avctx);
1763 if (avctx->codec && avctx->codec->close)
1764 avctx->codec->close(avctx);
1765 avcodec_default_free_buffers(avctx);
1766 avctx->coded_frame = NULL;
1767 avctx->internal->byte_buffer_size = 0;
1768 av_freep(&avctx->internal->byte_buffer);
1769 av_freep(&avctx->internal);
1772 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1773 av_opt_free(avctx->priv_data);
1775 av_freep(&avctx->priv_data);
1776 if (av_codec_is_encoder(avctx->codec))
1777 av_freep(&avctx->extradata);
1778 avctx->codec = NULL;
1779 avctx->active_thread_type = 0;
1780 entangled_thread_counter--;
1782 /* Release any user-supplied mutex. */
1783 if (ff_lockmgr_cb) {
1784 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1789 static enum CodecID remap_deprecated_codec_id(enum CodecID id)
1792 //This is for future deprecatec codec ids, its empty since
1793 //last major bump but will fill up again over time, please don't remove it
1794 // case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO;
1795 default : return id;
1799 AVCodec *avcodec_find_encoder(enum CodecID id)
1801 AVCodec *p, *experimental=NULL;
1803 id= remap_deprecated_codec_id(id);
1805 if (av_codec_is_encoder(p) && p->id == id) {
1806 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1813 return experimental;
1816 AVCodec *avcodec_find_encoder_by_name(const char *name)
1823 if (av_codec_is_encoder(p) && strcmp(name,p->name) == 0)
1830 AVCodec *avcodec_find_decoder(enum CodecID id)
1832 AVCodec *p, *experimental=NULL;
1834 id= remap_deprecated_codec_id(id);
1836 if (av_codec_is_decoder(p) && p->id == id) {
1837 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1844 return experimental;
1847 AVCodec *avcodec_find_decoder_by_name(const char *name)
1854 if (av_codec_is_decoder(p) && strcmp(name,p->name) == 0)
1861 const char *avcodec_get_name(enum CodecID id)
1867 #include "libavcodec/codec_names.h"
1869 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1871 codec = avcodec_find_decoder(id);
1874 codec = avcodec_find_encoder(id);
1877 return "unknown_codec";
1880 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1882 int i, len, ret = 0;
1884 #define IS_PRINT(x) \
1885 (((x) >= '0' && (x) <= '9') || \
1886 ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1887 ((x) == '.' || (x) == ' ' || (x) == '-'))
1889 for (i = 0; i < 4; i++) {
1890 len = snprintf(buf, buf_size,
1891 IS_PRINT(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1893 buf_size = buf_size > len ? buf_size - len : 0;
1900 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1902 const char *codec_type;
1903 const char *codec_name;
1904 const char *profile = NULL;
1907 AVRational display_aspect_ratio;
1909 if (!buf || buf_size <= 0)
1911 codec_type = av_get_media_type_string(enc->codec_type);
1912 codec_name = avcodec_get_name(enc->codec_id);
1913 if (enc->profile != FF_PROFILE_UNKNOWN) {
1917 p = encode ? avcodec_find_encoder(enc->codec_id) :
1918 avcodec_find_decoder(enc->codec_id);
1920 profile = av_get_profile_name(p, enc->profile);
1923 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1924 codec_name, enc->mb_decision ? " (hq)" : "");
1925 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1927 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1928 if (enc->codec_tag) {
1930 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1931 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1932 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1934 switch(enc->codec_type) {
1935 case AVMEDIA_TYPE_VIDEO:
1936 if (enc->pix_fmt != PIX_FMT_NONE) {
1937 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1939 av_get_pix_fmt_name(enc->pix_fmt));
1942 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1944 enc->width, enc->height);
1945 if (enc->sample_aspect_ratio.num) {
1946 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1947 enc->width*enc->sample_aspect_ratio.num,
1948 enc->height*enc->sample_aspect_ratio.den,
1950 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1951 " [SAR %d:%d DAR %d:%d]",
1952 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1953 display_aspect_ratio.num, display_aspect_ratio.den);
1955 if(av_log_get_level() >= AV_LOG_DEBUG){
1956 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1957 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1959 enc->time_base.num/g, enc->time_base.den/g);
1963 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1964 ", q=%d-%d", enc->qmin, enc->qmax);
1967 case AVMEDIA_TYPE_AUDIO:
1968 if (enc->sample_rate) {
1969 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1970 ", %d Hz", enc->sample_rate);
1972 av_strlcat(buf, ", ", buf_size);
1973 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1974 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1975 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1976 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1983 if (enc->flags & CODEC_FLAG_PASS1)
1984 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1986 if (enc->flags & CODEC_FLAG_PASS2)
1987 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1990 bitrate = get_bit_rate(enc);
1992 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1993 ", %d kb/s", bitrate / 1000);
1997 const char *av_get_profile_name(const AVCodec *codec, int profile)
2000 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
2003 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
2004 if (p->profile == profile)
2010 unsigned avcodec_version( void )
2012 // av_assert0(CODEC_ID_V410==164);
2013 av_assert0(CODEC_ID_PCM_S8_PLANAR==65563);
2014 av_assert0(CODEC_ID_ADPCM_G722==69660);
2015 // av_assert0(CODEC_ID_BMV_AUDIO==86071);
2016 av_assert0(CODEC_ID_SRT==94216);
2017 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
2019 return LIBAVCODEC_VERSION_INT;
2022 const char *avcodec_configuration(void)
2024 return FFMPEG_CONFIGURATION;
2027 const char *avcodec_license(void)
2029 #define LICENSE_PREFIX "libavcodec license: "
2030 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
2033 void avcodec_flush_buffers(AVCodecContext *avctx)
2035 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
2036 ff_thread_flush(avctx);
2037 else if(avctx->codec->flush)
2038 avctx->codec->flush(avctx);
2040 avctx->pts_correction_last_pts =
2041 avctx->pts_correction_last_dts = INT64_MIN;
2044 static void video_free_buffers(AVCodecContext *s)
2046 AVCodecInternal *avci = s->internal;
2052 if (avci->buffer_count)
2053 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
2054 avci->buffer_count);
2055 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
2056 InternalBuffer *buf = &avci->buffer[i];
2058 av_freep(&buf->base[j]);
2062 av_freep(&avci->buffer);
2064 avci->buffer_count=0;
2067 static void audio_free_buffers(AVCodecContext *avctx)
2069 AVCodecInternal *avci = avctx->internal;
2070 InternalBuffer *buf;
2076 if (buf->extended_data) {
2077 av_free(buf->extended_data[0]);
2078 if (buf->extended_data != buf->data)
2079 av_freep(&buf->extended_data);
2081 av_freep(&avci->buffer);
2084 void avcodec_default_free_buffers(AVCodecContext *avctx)
2086 switch (avctx->codec_type) {
2087 case AVMEDIA_TYPE_VIDEO:
2088 video_free_buffers(avctx);
2090 case AVMEDIA_TYPE_AUDIO:
2091 audio_free_buffers(avctx);
2098 int av_get_exact_bits_per_sample(enum CodecID codec_id)
2101 case CODEC_ID_ADPCM_CT:
2102 case CODEC_ID_ADPCM_IMA_APC:
2103 case CODEC_ID_ADPCM_IMA_EA_SEAD:
2104 case CODEC_ID_ADPCM_IMA_WS:
2105 case CODEC_ID_ADPCM_G722:
2106 case CODEC_ID_ADPCM_YAMAHA:
2108 case CODEC_ID_PCM_ALAW:
2109 case CODEC_ID_PCM_MULAW:
2110 case CODEC_ID_PCM_S8:
2111 case CODEC_ID_PCM_U8:
2112 case CODEC_ID_PCM_ZORK:
2114 case CODEC_ID_PCM_S16BE:
2115 case CODEC_ID_PCM_S16LE:
2116 case CODEC_ID_PCM_S16LE_PLANAR:
2117 case CODEC_ID_PCM_U16BE:
2118 case CODEC_ID_PCM_U16LE:
2120 case CODEC_ID_PCM_S24DAUD:
2121 case CODEC_ID_PCM_S24BE:
2122 case CODEC_ID_PCM_S24LE:
2123 case CODEC_ID_PCM_U24BE:
2124 case CODEC_ID_PCM_U24LE:
2126 case CODEC_ID_PCM_S32BE:
2127 case CODEC_ID_PCM_S32LE:
2128 case CODEC_ID_PCM_U32BE:
2129 case CODEC_ID_PCM_U32LE:
2130 case CODEC_ID_PCM_F32BE:
2131 case CODEC_ID_PCM_F32LE:
2133 case CODEC_ID_PCM_F64BE:
2134 case CODEC_ID_PCM_F64LE:
2141 enum CodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be)
2143 static const enum CodecID map[AV_SAMPLE_FMT_NB][2] = {
2144 [AV_SAMPLE_FMT_U8 ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 },
2145 [AV_SAMPLE_FMT_S16 ] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE },
2146 [AV_SAMPLE_FMT_S32 ] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE },
2147 [AV_SAMPLE_FMT_FLT ] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE },
2148 [AV_SAMPLE_FMT_DBL ] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE },
2149 [AV_SAMPLE_FMT_U8P ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 },
2150 [AV_SAMPLE_FMT_S16P] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE },
2151 [AV_SAMPLE_FMT_S32P] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE },
2152 [AV_SAMPLE_FMT_FLTP] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE },
2153 [AV_SAMPLE_FMT_DBLP] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE },
2155 if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
2156 return CODEC_ID_NONE;
2157 if (be < 0 || be > 1)
2159 return map[fmt][be];
2162 int av_get_bits_per_sample(enum CodecID codec_id)
2165 case CODEC_ID_ADPCM_SBPRO_2:
2167 case CODEC_ID_ADPCM_SBPRO_3:
2169 case CODEC_ID_ADPCM_SBPRO_4:
2170 case CODEC_ID_ADPCM_IMA_WAV:
2171 case CODEC_ID_ADPCM_IMA_QT:
2172 case CODEC_ID_ADPCM_SWF:
2173 case CODEC_ID_ADPCM_MS:
2176 return av_get_exact_bits_per_sample(codec_id);
2180 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2182 int id, sr, ch, ba, tag, bps;
2184 id = avctx->codec_id;
2185 sr = avctx->sample_rate;
2186 ch = avctx->channels;
2187 ba = avctx->block_align;
2188 tag = avctx->codec_tag;
2189 bps = av_get_exact_bits_per_sample(avctx->codec_id);
2191 /* codecs with an exact constant bits per sample */
2192 if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
2193 return (frame_bytes * 8LL) / (bps * ch);
2194 bps = avctx->bits_per_coded_sample;
2196 /* codecs with a fixed packet duration */
2198 case CODEC_ID_ADPCM_ADX: return 32;
2199 case CODEC_ID_ADPCM_IMA_QT: return 64;
2200 case CODEC_ID_ADPCM_EA_XAS: return 128;
2201 case CODEC_ID_AMR_NB:
2203 case CODEC_ID_QCELP:
2204 case CODEC_ID_RA_144:
2205 case CODEC_ID_RA_288: return 160;
2206 case CODEC_ID_IMC: return 256;
2207 case CODEC_ID_AMR_WB:
2208 case CODEC_ID_GSM_MS: return 320;
2209 case CODEC_ID_MP1: return 384;
2210 case CODEC_ID_ATRAC1: return 512;
2211 case CODEC_ID_ATRAC3: return 1024;
2213 case CODEC_ID_MUSEPACK7: return 1152;
2214 case CODEC_ID_AC3: return 1536;
2218 /* calc from sample rate */
2219 if (id == CODEC_ID_TTA)
2220 return 256 * sr / 245;
2223 /* calc from sample rate and channels */
2224 if (id == CODEC_ID_BINKAUDIO_DCT)
2225 return (480 << (sr / 22050)) / ch;
2230 /* calc from block_align */
2231 if (id == CODEC_ID_SIPR) {
2233 case 20: return 160;
2234 case 19: return 144;
2235 case 29: return 288;
2236 case 37: return 480;
2238 } else if (id == CODEC_ID_ILBC) {
2240 case 38: return 160;
2241 case 50: return 240;
2246 if (frame_bytes > 0) {
2247 /* calc from frame_bytes only */
2248 if (id == CODEC_ID_TRUESPEECH)
2249 return 240 * (frame_bytes / 32);
2250 if (id == CODEC_ID_NELLYMOSER)
2251 return 256 * (frame_bytes / 64);
2254 /* calc from frame_bytes and bits_per_coded_sample */
2255 if (id == CODEC_ID_ADPCM_G726)
2256 return frame_bytes * 8 / bps;
2260 /* calc from frame_bytes and channels */
2262 case CODEC_ID_ADPCM_4XM:
2263 case CODEC_ID_ADPCM_IMA_ISS:
2264 return (frame_bytes - 4 * ch) * 2 / ch;
2265 case CODEC_ID_ADPCM_IMA_SMJPEG:
2266 return (frame_bytes - 4) * 2 / ch;
2267 case CODEC_ID_ADPCM_IMA_AMV:
2268 return (frame_bytes - 8) * 2 / ch;
2269 case CODEC_ID_ADPCM_XA:
2270 return (frame_bytes / 128) * 224 / ch;
2271 case CODEC_ID_INTERPLAY_DPCM:
2272 return (frame_bytes - 6 - ch) / ch;
2273 case CODEC_ID_ROQ_DPCM:
2274 return (frame_bytes - 8) / ch;
2275 case CODEC_ID_XAN_DPCM:
2276 return (frame_bytes - 2 * ch) / ch;
2277 case CODEC_ID_MACE3:
2278 return 3 * frame_bytes / ch;
2279 case CODEC_ID_MACE6:
2280 return 6 * frame_bytes / ch;
2281 case CODEC_ID_PCM_LXF:
2282 return 2 * (frame_bytes / (5 * ch));
2286 /* calc from frame_bytes, channels, and codec_tag */
2287 if (id == CODEC_ID_SOL_DPCM) {
2289 return frame_bytes / ch;
2291 return frame_bytes * 2 / ch;
2296 /* calc from frame_bytes, channels, and block_align */
2297 int blocks = frame_bytes / ba;
2298 switch (avctx->codec_id) {
2299 case CODEC_ID_ADPCM_IMA_WAV:
2300 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2301 case CODEC_ID_ADPCM_IMA_DK3:
2302 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2303 case CODEC_ID_ADPCM_IMA_DK4:
2304 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2305 case CODEC_ID_ADPCM_MS:
2306 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2311 /* calc from frame_bytes, channels, and bits_per_coded_sample */
2312 switch (avctx->codec_id) {
2313 case CODEC_ID_PCM_DVD:
2316 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2317 case CODEC_ID_PCM_BLURAY:
2320 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2321 case CODEC_ID_S302M:
2322 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2332 int ff_thread_init(AVCodecContext *s){
2337 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2351 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
2353 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
2357 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2359 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
2360 "version to the newest one from Git. If the problem still "
2361 "occurs, it means that your file has a feature which has not "
2362 "been implemented.\n", feature);
2364 av_log_ask_for_sample(avc, NULL);
2367 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2369 va_list argument_list;
2371 va_start(argument_list, msg);
2374 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2375 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2376 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
2377 "and contact the ffmpeg-devel mailing list.\n");
2379 va_end(argument_list);
2382 static AVHWAccel *first_hwaccel = NULL;
2384 void av_register_hwaccel(AVHWAccel *hwaccel)
2386 AVHWAccel **p = &first_hwaccel;
2390 hwaccel->next = NULL;
2393 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
2395 return hwaccel ? hwaccel->next : first_hwaccel;
2398 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
2400 AVHWAccel *hwaccel=NULL;
2402 while((hwaccel= av_hwaccel_next(hwaccel))){
2403 if ( hwaccel->id == codec_id
2404 && hwaccel->pix_fmt == pix_fmt)
2410 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2412 if (ff_lockmgr_cb) {
2413 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
2415 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
2421 if (ff_lockmgr_cb) {
2422 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
2424 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2430 int avpriv_lock_avformat(void)
2432 if (ff_lockmgr_cb) {
2433 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2439 int avpriv_unlock_avformat(void)
2441 if (ff_lockmgr_cb) {
2442 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2448 unsigned int avpriv_toupper4(unsigned int x)
2450 return toupper( x &0xFF)
2451 + (toupper((x>>8 )&0xFF)<<8 )
2452 + (toupper((x>>16)&0xFF)<<16)
2453 + (toupper((x>>24)&0xFF)<<24);
2458 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2462 ff_init_buffer_info(avctx, f);
2464 return avctx->get_buffer(avctx, f);
2467 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2469 f->owner->release_buffer(f->owner, f);
2472 void ff_thread_finish_setup(AVCodecContext *avctx)
2476 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2480 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2484 int ff_thread_can_start_frame(AVCodecContext *avctx)
2491 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
2493 AVCodec *c= avcodec_find_decoder(codec_id);
2495 c= avcodec_find_encoder(codec_id);
2499 if (codec_id <= CODEC_ID_NONE)
2500 return AVMEDIA_TYPE_UNKNOWN;
2501 else if (codec_id < CODEC_ID_FIRST_AUDIO)
2502 return AVMEDIA_TYPE_VIDEO;
2503 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
2504 return AVMEDIA_TYPE_AUDIO;
2505 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
2506 return AVMEDIA_TYPE_SUBTITLE;
2508 return AVMEDIA_TYPE_UNKNOWN;
2511 int avcodec_is_open(AVCodecContext *s)
2513 return !!s->internal;