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 dsputil_static_init();
121 static av_always_inline int codec_is_encoder(AVCodec *codec)
123 return codec && (codec->encode || codec->encode2);
126 static av_always_inline int 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 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, 32)))
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))
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 if(s->active_thread_type&FF_THREAD_FRAME) {
429 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
433 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
434 av_freep(&buf->base[i]);
440 int h_chroma_shift, v_chroma_shift;
445 int stride_align[AV_NUM_DATA_POINTERS];
446 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
448 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
450 avcodec_align_dimensions2(s, &w, &h, stride_align);
452 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
458 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
459 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
460 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
461 // increase alignment of w for next try (rhs gives the lowest bit set in w)
466 unaligned |= picture.linesize[i] % stride_align[i];
470 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
474 for (i=0; i<3 && picture.data[i+1]; i++)
475 size[i] = picture.data[i+1] - picture.data[i];
476 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
478 memset(buf->base, 0, sizeof(buf->base));
479 memset(buf->data, 0, sizeof(buf->data));
481 for(i=0; i<4 && size[i]; i++){
482 const int h_shift= i==0 ? 0 : h_chroma_shift;
483 const int v_shift= i==0 ? 0 : v_chroma_shift;
485 buf->linesize[i]= picture.linesize[i];
487 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
488 if(buf->base[i]==NULL) return -1;
489 memset(buf->base[i], 128, size[i]);
491 // no edge if EDGE EMU or not planar YUV
492 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
493 buf->data[i] = buf->base[i];
495 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
497 for (; i < AV_NUM_DATA_POINTERS; i++) {
498 buf->base[i] = buf->data[i] = NULL;
499 buf->linesize[i] = 0;
501 if(size[1] && !size[2])
502 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
503 buf->width = s->width;
504 buf->height = s->height;
505 buf->pix_fmt= s->pix_fmt;
507 pic->type= FF_BUFFER_TYPE_INTERNAL;
509 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
510 pic->base[i]= buf->base[i];
511 pic->data[i]= buf->data[i];
512 pic->linesize[i]= buf->linesize[i];
514 pic->extended_data = pic->data;
515 avci->buffer_count++;
518 pic->pkt_pts = s->pkt->pts;
519 pic->pkt_pos = s->pkt->pos;
521 pic->pkt_pts = AV_NOPTS_VALUE;
524 pic->reordered_opaque= s->reordered_opaque;
525 pic->sample_aspect_ratio = s->sample_aspect_ratio;
526 pic->width = s->width;
527 pic->height = s->height;
528 pic->format = s->pix_fmt;
530 if(s->debug&FF_DEBUG_BUFFERS)
531 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
532 "buffers used\n", pic, avci->buffer_count);
537 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
539 switch (avctx->codec_type) {
540 case AVMEDIA_TYPE_VIDEO:
541 return video_get_buffer(avctx, frame);
542 case AVMEDIA_TYPE_AUDIO:
543 return audio_get_buffer(avctx, frame);
549 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
551 InternalBuffer *buf, *last;
552 AVCodecInternal *avci = s->internal;
554 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
556 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
557 assert(avci->buffer_count);
560 buf = NULL; /* avoids warning */
561 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
562 buf = &avci->buffer[i];
563 if (buf->data[0] == pic->data[0])
566 assert(i < avci->buffer_count);
567 avci->buffer_count--;
568 last = &avci->buffer[avci->buffer_count];
571 FFSWAP(InternalBuffer, *buf, *last);
574 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
576 // pic->base[i]=NULL;
578 //printf("R%X\n", pic->opaque);
580 if(s->debug&FF_DEBUG_BUFFERS)
581 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
582 "buffers used\n", pic, avci->buffer_count);
585 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
589 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
591 if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) {
592 av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
593 pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt));
594 s->release_buffer(s, pic);
597 ff_init_buffer_info(s, pic);
599 /* If no picture return a new buffer */
600 if(pic->data[0] == NULL) {
601 /* We will copy from buffer, so must be readable */
602 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
603 return s->get_buffer(s, pic);
606 /* If internal buffer type return the same buffer */
607 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
612 * Not internal type and reget_buffer not overridden, emulate cr buffer
615 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
616 pic->data[i] = pic->base[i] = NULL;
618 /* Allocate new frame */
619 if (s->get_buffer(s, pic))
621 /* Copy image data from old buffer to new buffer */
622 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
624 s->release_buffer(s, &temp_pic); // Release old frame
628 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
631 for(i=0; i<count; i++){
632 int r= func(c, (char*)arg + i*size);
638 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
641 for(i=0; i<count; i++){
642 int r= func(c, arg, i, 0);
648 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
649 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
654 void avcodec_get_frame_defaults(AVFrame *pic){
655 memset(pic, 0, sizeof(AVFrame));
657 pic->pts = pic->pkt_dts = pic->pkt_pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
660 pic->sample_aspect_ratio = (AVRational){0, 1};
661 pic->format = -1; /* unknown */
664 AVFrame *avcodec_alloc_frame(void){
665 AVFrame *pic= av_malloc(sizeof(AVFrame));
667 if(pic==NULL) return NULL;
669 avcodec_get_frame_defaults(pic);
674 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
676 memset(sub, 0, sizeof(*sub));
677 sub->pts = AV_NOPTS_VALUE;
680 #if FF_API_AVCODEC_OPEN
681 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
683 return avcodec_open2(avctx, codec, NULL);
687 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
690 AVDictionary *tmp = NULL;
692 if (avcodec_is_open(avctx))
695 if ((!codec && !avctx->codec)) {
696 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
697 return AVERROR(EINVAL);
699 if ((codec && avctx->codec && codec != avctx->codec)) {
700 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
701 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
702 return AVERROR(EINVAL);
705 codec = avctx->codec;
707 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
708 return AVERROR(EINVAL);
711 av_dict_copy(&tmp, *options, 0);
713 /* If there is a user-supplied mutex locking routine, call it. */
715 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
719 entangled_thread_counter++;
720 if(entangled_thread_counter != 1){
721 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
726 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
727 if (!avctx->internal) {
728 ret = AVERROR(ENOMEM);
732 if (codec->priv_data_size > 0) {
733 if(!avctx->priv_data){
734 avctx->priv_data = av_mallocz(codec->priv_data_size);
735 if (!avctx->priv_data) {
736 ret = AVERROR(ENOMEM);
739 if (codec->priv_class) {
740 *(AVClass**)avctx->priv_data= codec->priv_class;
741 av_opt_set_defaults(avctx->priv_data);
744 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
747 avctx->priv_data = NULL;
749 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
752 if (codec->capabilities & CODEC_CAP_EXPERIMENTAL)
753 if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
754 av_log(avctx, AV_LOG_ERROR, "Codec is experimental but experimental codecs are not enabled, see -strict -2\n");
759 //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
760 if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){
761 if(avctx->coded_width && avctx->coded_height)
762 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
763 else if(avctx->width && avctx->height)
764 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
767 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
768 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
769 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
770 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
771 avcodec_set_dimensions(avctx, 0, 0);
774 /* if the decoder init function was already called previously,
775 free the already allocated subtitle_header before overwriting it */
776 if (codec_is_decoder(codec))
777 av_freep(&avctx->subtitle_header);
779 #define SANE_NB_CHANNELS 128U
780 if (avctx->channels > SANE_NB_CHANNELS) {
781 ret = AVERROR(EINVAL);
785 avctx->codec = codec;
786 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
787 avctx->codec_id == CODEC_ID_NONE) {
788 avctx->codec_type = codec->type;
789 avctx->codec_id = codec->id;
791 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
792 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
793 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
794 ret = AVERROR(EINVAL);
797 avctx->frame_number = 0;
799 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
800 (!avctx->time_base.num || !avctx->time_base.den)) {
801 avctx->time_base.num = 1;
802 avctx->time_base.den = avctx->sample_rate;
806 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
808 if (HAVE_THREADS && !avctx->thread_opaque) {
809 ret = ff_thread_init(avctx);
814 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
815 avctx->thread_count = 1;
817 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
818 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
819 avctx->codec->max_lowres);
820 ret = AVERROR(EINVAL);
823 if (codec_is_encoder(avctx->codec)) {
825 if (avctx->codec->sample_fmts) {
826 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
827 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
829 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
830 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
831 ret = AVERROR(EINVAL);
835 if (avctx->codec->pix_fmts) {
836 for (i = 0; avctx->codec->pix_fmts[i] != PIX_FMT_NONE; i++)
837 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
839 if (avctx->codec->pix_fmts[i] == PIX_FMT_NONE) {
840 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
841 ret = AVERROR(EINVAL);
845 if (avctx->codec->supported_samplerates) {
846 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
847 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
849 if (avctx->codec->supported_samplerates[i] == 0) {
850 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
851 ret = AVERROR(EINVAL);
855 if (avctx->codec->channel_layouts) {
856 if (!avctx->channel_layout) {
857 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
859 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
860 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
862 if (avctx->codec->channel_layouts[i] == 0) {
863 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
864 ret = AVERROR(EINVAL);
869 if (avctx->channel_layout && avctx->channels) {
870 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
871 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
872 ret = AVERROR(EINVAL);
875 } else if (avctx->channel_layout) {
876 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
880 avctx->pts_correction_num_faulty_pts =
881 avctx->pts_correction_num_faulty_dts = 0;
882 avctx->pts_correction_last_pts =
883 avctx->pts_correction_last_dts = INT64_MIN;
885 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
886 ret = avctx->codec->init(avctx);
894 entangled_thread_counter--;
896 /* Release any user-supplied mutex. */
898 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
901 av_dict_free(options);
908 av_freep(&avctx->priv_data);
909 av_freep(&avctx->internal);
914 int ff_alloc_packet(AVPacket *avpkt, int size)
916 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
917 return AVERROR(EINVAL);
922 if (avpkt->size < size)
923 return AVERROR(EINVAL);
925 pkt_data = avpkt->data;
926 av_init_packet(avpkt);
927 avpkt->data = pkt_data;
931 return av_new_packet(avpkt, size);
935 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
937 const AVFrame *frame,
941 int user_packet = !!avpkt->data;
944 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
945 av_init_packet(avpkt);
950 /* check for valid frame size */
952 nb_samples = frame->nb_samples;
953 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
954 if (nb_samples > avctx->frame_size)
955 return AVERROR(EINVAL);
956 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
957 if (nb_samples != avctx->frame_size)
958 return AVERROR(EINVAL);
961 nb_samples = avctx->frame_size;
964 if (avctx->codec->encode2) {
966 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
967 if (!ret && *got_packet_ptr) {
968 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
969 avpkt->pts = frame->pts;
970 avpkt->duration = av_rescale_q(frame->nb_samples,
971 (AVRational){ 1, avctx->sample_rate },
974 avpkt->dts = avpkt->pts;
979 /* for compatibility with encoders not supporting encode2(), we need to
980 allocate a packet buffer if the user has not provided one or check
981 the size otherwise */
983 int buf_size = avpkt->size;
985 if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) {
986 av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0);
988 return AVERROR(EINVAL);
989 buf_size = nb_samples * avctx->channels *
990 av_get_bits_per_sample(avctx->codec_id) / 8;
992 /* this is a guess as to the required size.
993 if an encoder needs more than this, it should probably
994 implement encode2() */
995 buf_size = 2 * avctx->frame_size * avctx->channels *
996 av_get_bytes_per_sample(avctx->sample_fmt);
997 buf_size += FF_MIN_BUFFER_SIZE;
1000 if ((ret = ff_alloc_packet(avpkt, buf_size)))
1003 /* Encoders using AVCodec.encode() that support
1004 CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to
1005 the smaller size when encoding the last frame.
1006 This code can be removed once all encoders supporting
1007 CODEC_CAP_SMALL_LAST_FRAME use encode2() */
1008 if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) &&
1009 nb_samples < avctx->frame_size) {
1010 fs_tmp = avctx->frame_size;
1011 avctx->frame_size = nb_samples;
1014 /* encode the frame */
1015 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size,
1016 frame ? frame->data[0] : NULL);
1019 /* no output. if the packet data was allocated by libavcodec,
1022 av_freep(&avpkt->data);
1024 if (avctx->coded_frame)
1025 avpkt->pts = avpkt->dts = avctx->coded_frame->pts;
1026 /* Set duration for final small packet. This can be removed
1027 once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use
1030 avpkt->duration = av_rescale_q(avctx->frame_size,
1031 (AVRational){ 1, avctx->sample_rate },
1036 *got_packet_ptr = (ret > 0);
1041 avctx->frame_size = fs_tmp;
1044 avctx->frame_number++;
1046 /* NOTE: if we add any audio encoders which output non-keyframe packets,
1047 this needs to be moved to the encoders, but for now we can do it
1048 here to simplify things */
1049 avpkt->flags |= AV_PKT_FLAG_KEY;
1054 #if FF_API_OLD_DECODE_AUDIO
1055 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1056 uint8_t *buf, int buf_size,
1057 const short *samples)
1062 int ret, samples_size, got_packet;
1064 av_init_packet(&pkt);
1066 pkt.size = buf_size;
1070 avcodec_get_frame_defaults(frame);
1072 if (avctx->frame_size) {
1073 frame->nb_samples = avctx->frame_size;
1075 /* if frame_size is not set, the number of samples must be
1076 calculated from the buffer size */
1078 if (!av_get_bits_per_sample(avctx->codec_id)) {
1079 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1080 "support this codec\n");
1081 return AVERROR(EINVAL);
1083 nb_samples = (int64_t)buf_size * 8 /
1084 (av_get_bits_per_sample(avctx->codec_id) *
1086 if (nb_samples >= INT_MAX)
1087 return AVERROR(EINVAL);
1088 frame->nb_samples = nb_samples;
1091 /* it is assumed that the samples buffer is large enough based on the
1092 relevant parameters */
1093 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1095 avctx->sample_fmt, 1);
1096 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1098 samples, samples_size, 1)))
1101 /* fabricate frame pts from sample count.
1102 this is needed because the avcodec_encode_audio() API does not have
1103 a way for the user to provide pts */
1104 if(avctx->sample_rate && avctx->time_base.num)
1105 frame->pts = av_rescale_q(avctx->internal->sample_count,
1106 (AVRational){ 1, avctx->sample_rate },
1109 frame->pts = AV_NOPTS_VALUE;
1110 avctx->internal->sample_count += frame->nb_samples;
1116 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1117 if (!ret && got_packet && avctx->coded_frame) {
1118 avctx->coded_frame->pts = pkt.pts;
1119 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1121 /* free any side data since we cannot return it */
1122 ff_packet_free_side_data(&pkt);
1124 if (frame && frame->extended_data != frame->data)
1125 av_freep(&frame->extended_data);
1127 return ret ? ret : pkt.size;
1131 #if FF_API_OLD_ENCODE_VIDEO
1132 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1133 const AVFrame *pict)
1136 int ret, got_packet = 0;
1138 if(buf_size < FF_MIN_BUFFER_SIZE){
1139 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1143 av_init_packet(&pkt);
1145 pkt.size = buf_size;
1147 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1148 if (!ret && got_packet && avctx->coded_frame) {
1149 avctx->coded_frame->pts = pkt.pts;
1150 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1153 /* free any side data since we cannot return it */
1154 if (pkt.side_data_elems > 0) {
1156 for (i = 0; i < pkt.side_data_elems; i++)
1157 av_free(pkt.side_data[i].data);
1158 av_freep(&pkt.side_data);
1159 pkt.side_data_elems = 0;
1162 return ret ? ret : pkt.size;
1166 #define MAX_CODED_FRAME_SIZE(width, height)\
1167 (9*(width)*(height) + FF_MIN_BUFFER_SIZE)
1169 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1171 const AVFrame *frame,
1172 int *got_packet_ptr)
1175 int user_packet = !!avpkt->data;
1177 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1178 av_init_packet(avpkt);
1180 *got_packet_ptr = 0;
1184 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1185 return AVERROR(EINVAL);
1187 if (avctx->codec->encode2) {
1188 *got_packet_ptr = 0;
1189 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1191 if (!*got_packet_ptr)
1193 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1194 avpkt->pts = avpkt->dts = frame->pts;
1197 /* for compatibility with encoders not supporting encode2(), we need to
1198 allocate a packet buffer if the user has not provided one or check
1199 the size otherwise */
1200 int buf_size = avpkt->size;
1203 buf_size = MAX_CODED_FRAME_SIZE(avctx->width, avctx->height);
1205 if ((ret = ff_alloc_packet(avpkt, buf_size)))
1208 /* encode the frame */
1209 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size, frame);
1212 /* no output. if the packet data was allocated by libavcodec,
1215 av_freep(&avpkt->data);
1216 } else if (avctx->coded_frame) {
1217 avpkt->pts = avctx->coded_frame->pts;
1218 avpkt->flags |= AV_PKT_FLAG_KEY*!!avctx->coded_frame->key_frame;
1222 *got_packet_ptr = (ret > 0);
1228 avctx->frame_number++;
1234 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1235 const AVSubtitle *sub)
1238 if(sub->start_display_time) {
1239 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1243 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
1244 avctx->frame_number++;
1249 * Attempt to guess proper monotonic timestamps for decoded video frames
1250 * which might have incorrect times. Input timestamps may wrap around, in
1251 * which case the output will as well.
1253 * @param pts the pts field of the decoded AVPacket, as passed through
1255 * @param dts the dts field of the decoded AVPacket
1256 * @return one of the input values, may be AV_NOPTS_VALUE
1258 static int64_t guess_correct_pts(AVCodecContext *ctx,
1259 int64_t reordered_pts, int64_t dts)
1261 int64_t pts = AV_NOPTS_VALUE;
1263 if (dts != AV_NOPTS_VALUE) {
1264 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
1265 ctx->pts_correction_last_dts = dts;
1267 if (reordered_pts != AV_NOPTS_VALUE) {
1268 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
1269 ctx->pts_correction_last_pts = reordered_pts;
1271 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
1272 && reordered_pts != AV_NOPTS_VALUE)
1273 pts = reordered_pts;
1280 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1283 const uint8_t *data;
1286 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1289 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1290 if (!data || size < 4)
1292 flags = bytestream_get_le32(&data);
1294 if (size < 4) /* Required for any of the changes */
1296 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1297 avctx->channels = bytestream_get_le32(&data);
1300 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1303 avctx->channel_layout = bytestream_get_le64(&data);
1308 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1309 avctx->sample_rate = bytestream_get_le32(&data);
1312 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1315 avctx->width = bytestream_get_le32(&data);
1316 avctx->height = bytestream_get_le32(&data);
1317 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1322 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1323 int *got_picture_ptr,
1324 const AVPacket *avpkt)
1327 // copy to ensure we do not change avpkt
1328 AVPacket tmp = *avpkt;
1330 *got_picture_ptr= 0;
1331 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1334 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1335 int did_split = av_packet_split_side_data(&tmp);
1336 apply_param_change(avctx, &tmp);
1338 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1339 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1342 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1344 picture->pkt_dts= avpkt->dts;
1346 if(!avctx->has_b_frames){
1347 picture->pkt_pos= avpkt->pos;
1349 //FIXME these should be under if(!avctx->has_b_frames)
1350 if (!picture->sample_aspect_ratio.num)
1351 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1352 if (!picture->width)
1353 picture->width = avctx->width;
1354 if (!picture->height)
1355 picture->height = avctx->height;
1356 if (picture->format == PIX_FMT_NONE)
1357 picture->format = avctx->pix_fmt;
1360 emms_c(); //needed to avoid an emms_c() call before every return;
1364 ff_packet_free_side_data(&tmp);
1366 if (*got_picture_ptr){
1367 avctx->frame_number++;
1368 picture->best_effort_timestamp = guess_correct_pts(avctx,
1378 #if FF_API_OLD_DECODE_AUDIO
1379 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1380 int *frame_size_ptr,
1384 int ret, got_frame = 0;
1386 if (avctx->get_buffer != avcodec_default_get_buffer) {
1387 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1388 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1389 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1390 "avcodec_decode_audio4()\n");
1391 avctx->get_buffer = avcodec_default_get_buffer;
1392 avctx->release_buffer = avcodec_default_release_buffer;
1395 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1397 if (ret >= 0 && got_frame) {
1399 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1400 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1402 avctx->sample_fmt, 1);
1403 if (*frame_size_ptr < data_size) {
1404 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1405 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1406 return AVERROR(EINVAL);
1409 memcpy(samples, frame.extended_data[0], plane_size);
1411 if (planar && avctx->channels > 1) {
1412 uint8_t *out = ((uint8_t *)samples) + plane_size;
1413 for (ch = 1; ch < avctx->channels; ch++) {
1414 memcpy(out, frame.extended_data[ch], plane_size);
1418 *frame_size_ptr = data_size;
1420 *frame_size_ptr = 0;
1426 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1435 if (!avpkt->data && avpkt->size) {
1436 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1437 return AVERROR(EINVAL);
1440 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1441 av_packet_split_side_data(avpkt);
1442 apply_param_change(avctx, avpkt);
1445 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1446 if (ret >= 0 && *got_frame_ptr) {
1447 avctx->frame_number++;
1448 frame->pkt_dts = avpkt->dts;
1449 if (frame->format == AV_SAMPLE_FMT_NONE)
1450 frame->format = avctx->sample_fmt;
1456 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1464 avcodec_get_subtitle_defaults(sub);
1465 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1467 avctx->frame_number++;
1471 void avsubtitle_free(AVSubtitle *sub)
1475 for (i = 0; i < sub->num_rects; i++)
1477 av_freep(&sub->rects[i]->pict.data[0]);
1478 av_freep(&sub->rects[i]->pict.data[1]);
1479 av_freep(&sub->rects[i]->pict.data[2]);
1480 av_freep(&sub->rects[i]->pict.data[3]);
1481 av_freep(&sub->rects[i]->text);
1482 av_freep(&sub->rects[i]->ass);
1483 av_freep(&sub->rects[i]);
1486 av_freep(&sub->rects);
1488 memset(sub, 0, sizeof(AVSubtitle));
1491 av_cold int avcodec_close(AVCodecContext *avctx)
1493 /* If there is a user-supplied mutex locking routine, call it. */
1494 if (ff_lockmgr_cb) {
1495 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1499 entangled_thread_counter++;
1500 if(entangled_thread_counter != 1){
1501 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1502 entangled_thread_counter--;
1506 if (avcodec_is_open(avctx)) {
1507 if (HAVE_THREADS && avctx->thread_opaque)
1508 ff_thread_free(avctx);
1509 if (avctx->codec && avctx->codec->close)
1510 avctx->codec->close(avctx);
1511 avcodec_default_free_buffers(avctx);
1512 avctx->coded_frame = NULL;
1513 av_freep(&avctx->internal);
1516 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1517 av_opt_free(avctx->priv_data);
1519 av_freep(&avctx->priv_data);
1520 if (codec_is_encoder(avctx->codec))
1521 av_freep(&avctx->extradata);
1522 avctx->codec = NULL;
1523 avctx->active_thread_type = 0;
1524 entangled_thread_counter--;
1526 /* Release any user-supplied mutex. */
1527 if (ff_lockmgr_cb) {
1528 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1533 static enum CodecID remap_deprecated_codec_id(enum CodecID id)
1536 //This is for future deprecatec codec ids, its empty since
1537 //last major bump but will fill up again over time, please dont remove it
1538 // case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO;
1539 default : return id;
1543 AVCodec *avcodec_find_encoder(enum CodecID id)
1545 AVCodec *p, *experimental=NULL;
1547 id= remap_deprecated_codec_id(id);
1549 if (codec_is_encoder(p) && p->id == id) {
1550 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1557 return experimental;
1560 AVCodec *avcodec_find_encoder_by_name(const char *name)
1567 if (codec_is_encoder(p) && strcmp(name,p->name) == 0)
1574 AVCodec *avcodec_find_decoder(enum CodecID id)
1576 AVCodec *p, *experimental=NULL;
1578 id= remap_deprecated_codec_id(id);
1580 if (codec_is_decoder(p) && p->id == id) {
1581 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1588 return experimental;
1591 AVCodec *avcodec_find_decoder_by_name(const char *name)
1598 if (codec_is_decoder(p) && strcmp(name,p->name) == 0)
1605 static int get_bit_rate(AVCodecContext *ctx)
1608 int bits_per_sample;
1610 switch(ctx->codec_type) {
1611 case AVMEDIA_TYPE_VIDEO:
1612 case AVMEDIA_TYPE_DATA:
1613 case AVMEDIA_TYPE_SUBTITLE:
1614 case AVMEDIA_TYPE_ATTACHMENT:
1615 bit_rate = ctx->bit_rate;
1617 case AVMEDIA_TYPE_AUDIO:
1618 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1619 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1628 const char *avcodec_get_name(enum CodecID id)
1634 #include "libavcodec/codec_names.h"
1636 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1638 codec = avcodec_find_decoder(id);
1641 codec = avcodec_find_encoder(id);
1644 return "unknown_codec";
1647 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1649 int i, len, ret = 0;
1651 for (i = 0; i < 4; i++) {
1652 len = snprintf(buf, buf_size,
1653 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1655 buf_size = buf_size > len ? buf_size - len : 0;
1662 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1664 const char *codec_type;
1665 const char *codec_name;
1666 const char *profile = NULL;
1669 AVRational display_aspect_ratio;
1671 if (!buf || buf_size <= 0)
1673 codec_type = av_get_media_type_string(enc->codec_type);
1674 codec_name = avcodec_get_name(enc->codec_id);
1675 if (enc->profile != FF_PROFILE_UNKNOWN) {
1676 p = encode ? avcodec_find_encoder(enc->codec_id) :
1677 avcodec_find_decoder(enc->codec_id);
1679 profile = av_get_profile_name(p, enc->profile);
1682 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1683 codec_name, enc->mb_decision ? " (hq)" : "");
1684 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1686 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1687 if (enc->codec_tag) {
1689 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1690 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1691 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1693 switch(enc->codec_type) {
1694 case AVMEDIA_TYPE_VIDEO:
1695 if (enc->pix_fmt != PIX_FMT_NONE) {
1696 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1698 av_get_pix_fmt_name(enc->pix_fmt));
1701 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1703 enc->width, enc->height);
1704 if (enc->sample_aspect_ratio.num) {
1705 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1706 enc->width*enc->sample_aspect_ratio.num,
1707 enc->height*enc->sample_aspect_ratio.den,
1709 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1710 " [SAR %d:%d DAR %d:%d]",
1711 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1712 display_aspect_ratio.num, display_aspect_ratio.den);
1714 if(av_log_get_level() >= AV_LOG_DEBUG){
1715 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1716 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1718 enc->time_base.num/g, enc->time_base.den/g);
1722 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1723 ", q=%d-%d", enc->qmin, enc->qmax);
1726 case AVMEDIA_TYPE_AUDIO:
1727 if (enc->sample_rate) {
1728 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1729 ", %d Hz", enc->sample_rate);
1731 av_strlcat(buf, ", ", buf_size);
1732 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1733 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1734 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1735 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1742 if (enc->flags & CODEC_FLAG_PASS1)
1743 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1745 if (enc->flags & CODEC_FLAG_PASS2)
1746 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1749 bitrate = get_bit_rate(enc);
1751 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1752 ", %d kb/s", bitrate / 1000);
1756 const char *av_get_profile_name(const AVCodec *codec, int profile)
1759 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1762 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1763 if (p->profile == profile)
1769 unsigned avcodec_version( void )
1771 // av_assert0(CODEC_ID_V410==164);
1772 av_assert0(CODEC_ID_PCM_S8_PLANAR==65563);
1773 av_assert0(CODEC_ID_ADPCM_G722==69660);
1774 // av_assert0(CODEC_ID_BMV_AUDIO==86071);
1775 av_assert0(CODEC_ID_SRT==94216);
1776 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
1778 return LIBAVCODEC_VERSION_INT;
1781 const char *avcodec_configuration(void)
1783 return FFMPEG_CONFIGURATION;
1786 const char *avcodec_license(void)
1788 #define LICENSE_PREFIX "libavcodec license: "
1789 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1792 void avcodec_flush_buffers(AVCodecContext *avctx)
1794 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1795 ff_thread_flush(avctx);
1796 else if(avctx->codec->flush)
1797 avctx->codec->flush(avctx);
1800 static void video_free_buffers(AVCodecContext *s)
1802 AVCodecInternal *avci = s->internal;
1808 if (avci->buffer_count)
1809 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1810 avci->buffer_count);
1811 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1812 InternalBuffer *buf = &avci->buffer[i];
1814 av_freep(&buf->base[j]);
1818 av_freep(&avci->buffer);
1820 avci->buffer_count=0;
1823 static void audio_free_buffers(AVCodecContext *avctx)
1825 AVCodecInternal *avci = avctx->internal;
1826 InternalBuffer *buf;
1832 if (buf->extended_data) {
1833 av_free(buf->extended_data[0]);
1834 if (buf->extended_data != buf->data)
1835 av_freep(&buf->extended_data);
1837 av_freep(&avci->buffer);
1840 void avcodec_default_free_buffers(AVCodecContext *avctx)
1842 switch (avctx->codec_type) {
1843 case AVMEDIA_TYPE_VIDEO:
1844 video_free_buffers(avctx);
1846 case AVMEDIA_TYPE_AUDIO:
1847 audio_free_buffers(avctx);
1854 int av_get_bits_per_sample(enum CodecID codec_id){
1856 case CODEC_ID_ADPCM_SBPRO_2:
1858 case CODEC_ID_ADPCM_SBPRO_3:
1860 case CODEC_ID_ADPCM_SBPRO_4:
1861 case CODEC_ID_ADPCM_CT:
1862 case CODEC_ID_ADPCM_IMA_APC:
1863 case CODEC_ID_ADPCM_IMA_WAV:
1864 case CODEC_ID_ADPCM_IMA_QT:
1865 case CODEC_ID_ADPCM_SWF:
1866 case CODEC_ID_ADPCM_MS:
1867 case CODEC_ID_ADPCM_YAMAHA:
1868 case CODEC_ID_ADPCM_G722:
1870 case CODEC_ID_PCM_ALAW:
1871 case CODEC_ID_PCM_MULAW:
1872 case CODEC_ID_PCM_S8:
1873 case CODEC_ID_PCM_U8:
1874 case CODEC_ID_PCM_ZORK:
1876 case CODEC_ID_PCM_S16BE:
1877 case CODEC_ID_PCM_S16LE:
1878 case CODEC_ID_PCM_S16LE_PLANAR:
1879 case CODEC_ID_PCM_U16BE:
1880 case CODEC_ID_PCM_U16LE:
1882 case CODEC_ID_PCM_S24DAUD:
1883 case CODEC_ID_PCM_S24BE:
1884 case CODEC_ID_PCM_S24LE:
1885 case CODEC_ID_PCM_U24BE:
1886 case CODEC_ID_PCM_U24LE:
1888 case CODEC_ID_PCM_S32BE:
1889 case CODEC_ID_PCM_S32LE:
1890 case CODEC_ID_PCM_U32BE:
1891 case CODEC_ID_PCM_U32LE:
1892 case CODEC_ID_PCM_F32BE:
1893 case CODEC_ID_PCM_F32LE:
1895 case CODEC_ID_PCM_F64BE:
1896 case CODEC_ID_PCM_F64LE:
1904 int ff_thread_init(AVCodecContext *s){
1909 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1923 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1925 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1929 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1931 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1932 "version to the newest one from Git. If the problem still "
1933 "occurs, it means that your file has a feature which has not "
1934 "been implemented.\n", feature);
1936 av_log_ask_for_sample(avc, NULL);
1939 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1941 va_list argument_list;
1943 va_start(argument_list, msg);
1946 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1947 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1948 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1949 "and contact the ffmpeg-devel mailing list.\n");
1951 va_end(argument_list);
1954 static AVHWAccel *first_hwaccel = NULL;
1956 void av_register_hwaccel(AVHWAccel *hwaccel)
1958 AVHWAccel **p = &first_hwaccel;
1962 hwaccel->next = NULL;
1965 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1967 return hwaccel ? hwaccel->next : first_hwaccel;
1970 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1972 AVHWAccel *hwaccel=NULL;
1974 while((hwaccel= av_hwaccel_next(hwaccel))){
1975 if ( hwaccel->id == codec_id
1976 && hwaccel->pix_fmt == pix_fmt)
1982 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1984 if (ff_lockmgr_cb) {
1985 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1987 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1993 if (ff_lockmgr_cb) {
1994 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1996 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
2002 int avpriv_lock_avformat(void)
2004 if (ff_lockmgr_cb) {
2005 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
2011 int avpriv_unlock_avformat(void)
2013 if (ff_lockmgr_cb) {
2014 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
2020 unsigned int avpriv_toupper4(unsigned int x)
2022 return toupper( x &0xFF)
2023 + (toupper((x>>8 )&0xFF)<<8 )
2024 + (toupper((x>>16)&0xFF)<<16)
2025 + (toupper((x>>24)&0xFF)<<24);
2030 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
2034 ff_init_buffer_info(avctx, f);
2036 return avctx->get_buffer(avctx, f);
2039 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
2041 f->owner->release_buffer(f->owner, f);
2044 void ff_thread_finish_setup(AVCodecContext *avctx)
2048 void ff_thread_report_progress(AVFrame *f, int progress, int field)
2052 void ff_thread_await_progress(AVFrame *f, int progress, int field)
2058 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
2060 AVCodec *c= avcodec_find_decoder(codec_id);
2062 c= avcodec_find_encoder(codec_id);
2066 if (codec_id <= CODEC_ID_NONE)
2067 return AVMEDIA_TYPE_UNKNOWN;
2068 else if (codec_id < CODEC_ID_FIRST_AUDIO)
2069 return AVMEDIA_TYPE_VIDEO;
2070 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
2071 return AVMEDIA_TYPE_AUDIO;
2072 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
2073 return AVMEDIA_TYPE_SUBTITLE;
2075 return AVMEDIA_TYPE_UNKNOWN;
2078 int avcodec_is_open(AVCodecContext *s)
2080 return !!s->internal;