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/avstring.h"
29 #include "libavutil/crc.h"
30 #include "libavutil/mathematics.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/audioconvert.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/samplefmt.h"
35 #include "libavutil/dict.h"
38 #include "libavutil/opt.h"
39 #include "imgconvert.h"
41 #include "audioconvert.h"
48 static int volatile entangled_thread_counter=0;
49 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
50 static void *codec_mutex;
52 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
57 min_size= FFMAX(17*min_size/16 + 32, min_size);
59 ptr= av_realloc(ptr, min_size);
60 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
68 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
73 min_size= FFMAX(17*min_size/16 + 32, min_size);
75 *p = av_malloc(min_size);
76 if (!*p) min_size = 0;
80 /* encoder management */
81 static AVCodec *first_avcodec = NULL;
83 AVCodec *av_codec_next(AVCodec *c){
85 else return first_avcodec;
88 #if !FF_API_AVCODEC_INIT
91 void avcodec_init(void)
93 static int initialized = 0;
99 dsputil_static_init();
102 void avcodec_register(AVCodec *codec)
107 while (*p != NULL) p = &(*p)->next;
112 unsigned avcodec_get_edge_width(void)
117 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
118 s->coded_width = width;
119 s->coded_height= height;
120 s->width = -((-width )>>s->lowres);
121 s->height= -((-height)>>s->lowres);
124 typedef struct InternalBuffer{
130 enum PixelFormat pix_fmt;
133 #define INTERNAL_BUFFER_SIZE (32+1)
135 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
140 case PIX_FMT_YUV420P:
141 case PIX_FMT_YUYV422:
142 case PIX_FMT_UYVY422:
143 case PIX_FMT_YUV422P:
144 case PIX_FMT_YUV440P:
145 case PIX_FMT_YUV444P:
147 case PIX_FMT_GRAY16BE:
148 case PIX_FMT_GRAY16LE:
149 case PIX_FMT_YUVJ420P:
150 case PIX_FMT_YUVJ422P:
151 case PIX_FMT_YUVJ440P:
152 case PIX_FMT_YUVJ444P:
153 case PIX_FMT_YUVA420P:
154 case PIX_FMT_YUV420P9LE:
155 case PIX_FMT_YUV420P9BE:
156 case PIX_FMT_YUV420P10LE:
157 case PIX_FMT_YUV420P10BE:
158 case PIX_FMT_YUV422P10LE:
159 case PIX_FMT_YUV422P10BE:
160 case PIX_FMT_YUV444P9LE:
161 case PIX_FMT_YUV444P9BE:
162 case PIX_FMT_YUV444P10LE:
163 case PIX_FMT_YUV444P10BE:
164 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
166 if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP || s->codec_id == CODEC_ID_H264 || s->codec_id == CODEC_ID_PRORES)
167 h_align= 32; // interlaced is rounded up to 2 MBs
169 case PIX_FMT_YUV411P:
170 case PIX_FMT_UYYVYY411:
174 case PIX_FMT_YUV410P:
175 if(s->codec_id == CODEC_ID_SVQ1){
180 if(s->codec_id == CODEC_ID_RPZA){
187 if(s->codec_id == CODEC_ID_SMC){
193 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
204 *width = FFALIGN(*width , w_align);
205 *height= FFALIGN(*height, h_align);
206 if(s->codec_id == CODEC_ID_H264 || s->lowres)
207 *height+=2; // some of the optimized chroma MC reads one line too much
208 // which is also done in mpeg decoders with lowres > 0
213 linesize_align[3] = STRIDE_ALIGN;
214 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
215 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
216 //picture size unneccessarily in some cases. The solution here is not
217 //pretty and better ideas are welcome!
219 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
220 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
221 s->codec_id == CODEC_ID_VP6A) {
224 linesize_align[2] = 16;
229 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
230 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
231 int linesize_align[4];
233 avcodec_align_dimensions2(s, width, height, linesize_align);
234 align = FFMAX(linesize_align[0], linesize_align[3]);
235 linesize_align[1] <<= chroma_shift;
236 linesize_align[2] <<= chroma_shift;
237 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
238 *width=FFALIGN(*width, align);
241 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
248 if(pic->data[0]!=NULL) {
249 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
252 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
253 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
257 if(av_image_check_size(w, h, 0, s))
260 if(s->internal_buffer==NULL){
261 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
264 s->internal_buffer= av_fast_realloc(
266 &s->internal_buffer_size,
267 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
271 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
272 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
275 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
276 if(s->active_thread_type&FF_THREAD_FRAME) {
277 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
282 av_freep(&buf->base[i]);
288 pic->age= *picture_number - buf->last_pic_num;
289 buf->last_pic_num= *picture_number;
291 int h_chroma_shift, v_chroma_shift;
297 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
299 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
301 avcodec_align_dimensions2(s, &w, &h, stride_align);
303 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
309 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
310 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
311 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
312 // increase alignment of w for next try (rhs gives the lowest bit set in w)
317 unaligned |= picture.linesize[i] % stride_align[i];
321 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
325 for (i=0; i<3 && picture.data[i+1]; i++)
326 size[i] = picture.data[i+1] - picture.data[i];
327 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
329 buf->last_pic_num= -256*256*256*64;
330 memset(buf->base, 0, sizeof(buf->base));
331 memset(buf->data, 0, sizeof(buf->data));
333 for(i=0; i<4 && size[i]; i++){
334 const int h_shift= i==0 ? 0 : h_chroma_shift;
335 const int v_shift= i==0 ? 0 : v_chroma_shift;
337 buf->linesize[i]= picture.linesize[i];
339 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
340 if(buf->base[i]==NULL) return -1;
341 memset(buf->base[i], 128, size[i]);
343 // no edge if EDGE EMU or not planar YUV
344 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
345 buf->data[i] = buf->base[i];
347 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
349 if(size[1] && !size[2])
350 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
351 buf->width = s->width;
352 buf->height = s->height;
353 buf->pix_fmt= s->pix_fmt;
354 pic->age= 256*256*256*64;
356 pic->type= FF_BUFFER_TYPE_INTERNAL;
359 pic->base[i]= buf->base[i];
360 pic->data[i]= buf->data[i];
361 pic->linesize[i]= buf->linesize[i];
363 s->internal_buffer_count++;
366 pic->pkt_pts = s->pkt->pts;
367 pic->pkt_pos = s->pkt->pos;
369 pic->pkt_pts = AV_NOPTS_VALUE;
372 pic->reordered_opaque= s->reordered_opaque;
373 pic->sample_aspect_ratio = s->sample_aspect_ratio;
374 pic->width = s->width;
375 pic->height = s->height;
376 pic->format = s->pix_fmt;
378 if(s->debug&FF_DEBUG_BUFFERS)
379 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
384 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
386 InternalBuffer *buf, *last;
388 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
389 assert(s->internal_buffer_count);
391 if(s->internal_buffer){
392 buf = NULL; /* avoids warning */
393 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
394 buf= &((InternalBuffer*)s->internal_buffer)[i];
395 if(buf->data[0] == pic->data[0])
398 assert(i < s->internal_buffer_count);
399 s->internal_buffer_count--;
400 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
402 FFSWAP(InternalBuffer, *buf, *last);
407 // pic->base[i]=NULL;
409 //printf("R%X\n", pic->opaque);
411 if(s->debug&FF_DEBUG_BUFFERS)
412 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
415 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
419 /* If no picture return a new buffer */
420 if(pic->data[0] == NULL) {
421 /* We will copy from buffer, so must be readable */
422 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
423 return s->get_buffer(s, pic);
426 /* If internal buffer type return the same buffer */
427 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
428 if(s->pkt) pic->pkt_pts= s->pkt->pts;
429 else pic->pkt_pts= AV_NOPTS_VALUE;
430 pic->reordered_opaque= s->reordered_opaque;
435 * Not internal type and reget_buffer not overridden, emulate cr buffer
438 for(i = 0; i < 4; i++)
439 pic->data[i] = pic->base[i] = NULL;
441 /* Allocate new frame */
442 if (s->get_buffer(s, pic))
444 /* Copy image data from old buffer to new buffer */
445 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
447 s->release_buffer(s, &temp_pic); // Release old frame
451 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
454 for(i=0; i<count; i++){
455 int r= func(c, (char*)arg + i*size);
461 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
464 for(i=0; i<count; i++){
465 int r= func(c, arg, i, 0);
471 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
472 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
477 void avcodec_get_frame_defaults(AVFrame *pic){
478 memset(pic, 0, sizeof(AVFrame));
480 pic->pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
483 pic->sample_aspect_ratio = (AVRational){0, 1};
484 pic->format = -1; /* unknown */
487 AVFrame *avcodec_alloc_frame(void){
488 AVFrame *pic= av_malloc(sizeof(AVFrame));
490 if(pic==NULL) return NULL;
492 avcodec_get_frame_defaults(pic);
497 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
499 memset(sub, 0, sizeof(*sub));
500 sub->pts = AV_NOPTS_VALUE;
503 #if FF_API_AVCODEC_OPEN
504 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
506 return avcodec_open2(avctx, codec, NULL);
510 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
513 AVDictionary *tmp = NULL;
516 av_dict_copy(&tmp, *options, 0);
518 /* If there is a user-supplied mutex locking routine, call it. */
520 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
524 entangled_thread_counter++;
525 if(entangled_thread_counter != 1){
526 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
531 if(avctx->codec || !codec) {
532 ret = AVERROR(EINVAL);
536 if (codec->priv_data_size > 0) {
537 if(!avctx->priv_data){
538 avctx->priv_data = av_mallocz(codec->priv_data_size);
539 if (!avctx->priv_data) {
540 ret = AVERROR(ENOMEM);
543 if (codec->priv_class) {
544 *(AVClass**)avctx->priv_data= codec->priv_class;
545 av_opt_set_defaults(avctx->priv_data);
548 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
551 avctx->priv_data = NULL;
553 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
556 if(avctx->coded_width && avctx->coded_height)
557 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
558 else if(avctx->width && avctx->height)
559 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
561 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
562 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
563 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
564 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
565 avcodec_set_dimensions(avctx, 0, 0);
568 /* if the decoder init function was already called previously,
569 free the already allocated subtitle_header before overwriting it */
571 av_freep(&avctx->subtitle_header);
573 #define SANE_NB_CHANNELS 128U
574 if (avctx->channels > SANE_NB_CHANNELS) {
575 ret = AVERROR(EINVAL);
579 avctx->codec = codec;
580 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
581 avctx->codec_id == CODEC_ID_NONE) {
582 avctx->codec_type = codec->type;
583 avctx->codec_id = codec->id;
585 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
586 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
587 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
588 ret = AVERROR(EINVAL);
591 avctx->frame_number = 0;
594 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
596 if (HAVE_THREADS && !avctx->thread_opaque) {
597 ret = ff_thread_init(avctx);
603 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
604 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
605 avctx->codec->max_lowres);
606 ret = AVERROR(EINVAL);
609 if (avctx->codec->encode) {
611 if (avctx->codec->sample_fmts) {
612 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
613 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
615 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
616 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
617 ret = AVERROR(EINVAL);
621 if (avctx->codec->supported_samplerates) {
622 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
623 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
625 if (avctx->codec->supported_samplerates[i] == 0) {
626 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
627 ret = AVERROR(EINVAL);
631 if (avctx->codec->channel_layouts) {
632 if (!avctx->channel_layout) {
633 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
635 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
636 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
638 if (avctx->codec->channel_layouts[i] == 0) {
639 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
640 ret = AVERROR(EINVAL);
645 if (avctx->channel_layout && avctx->channels) {
646 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
647 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
648 ret = AVERROR(EINVAL);
651 } else if (avctx->channel_layout) {
652 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
656 avctx->pts_correction_num_faulty_pts =
657 avctx->pts_correction_num_faulty_dts = 0;
658 avctx->pts_correction_last_pts =
659 avctx->pts_correction_last_dts = INT64_MIN;
661 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
662 ret = avctx->codec->init(avctx);
670 entangled_thread_counter--;
672 /* Release any user-supplied mutex. */
674 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
677 av_dict_free(options);
684 av_freep(&avctx->priv_data);
689 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
690 const short *samples)
692 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
693 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
696 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
697 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
698 avctx->frame_number++;
704 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
707 if(buf_size < FF_MIN_BUFFER_SIZE){
708 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
711 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
713 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
714 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
715 avctx->frame_number++;
716 emms_c(); //needed to avoid an emms_c() call before every return;
723 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
724 const AVSubtitle *sub)
727 if(sub->start_display_time) {
728 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
732 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
733 avctx->frame_number++;
738 * Attempt to guess proper monotonic timestamps for decoded video frames
739 * which might have incorrect times. Input timestamps may wrap around, in
740 * which case the output will as well.
742 * @param pts the pts field of the decoded AVPacket, as passed through
744 * @param dts the dts field of the decoded AVPacket
745 * @return one of the input values, may be AV_NOPTS_VALUE
747 static int64_t guess_correct_pts(AVCodecContext *ctx,
748 int64_t reordered_pts, int64_t dts)
750 int64_t pts = AV_NOPTS_VALUE;
752 if (dts != AV_NOPTS_VALUE) {
753 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
754 ctx->pts_correction_last_dts = dts;
756 if (reordered_pts != AV_NOPTS_VALUE) {
757 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
758 ctx->pts_correction_last_pts = reordered_pts;
760 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
761 && reordered_pts != AV_NOPTS_VALUE)
769 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
770 int *got_picture_ptr,
776 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
779 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
780 av_packet_split_side_data(avpkt);
782 if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
783 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
786 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
788 picture->pkt_dts= avpkt->dts;
790 if(!avctx->has_b_frames){
791 picture->pkt_pos= avpkt->pos;
793 //FIXME these should be under if(!avctx->has_b_frames)
794 if (!picture->sample_aspect_ratio.num)
795 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
797 picture->width = avctx->width;
798 if (!picture->height)
799 picture->height = avctx->height;
800 if (picture->format == PIX_FMT_NONE)
801 picture->format = avctx->pix_fmt;
804 emms_c(); //needed to avoid an emms_c() call before every return;
807 if (*got_picture_ptr){
808 avctx->frame_number++;
809 picture->best_effort_timestamp = guess_correct_pts(avctx,
819 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
827 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
828 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
829 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
830 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
833 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
834 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
835 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
839 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
840 avctx->frame_number++;
848 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
856 avcodec_get_subtitle_defaults(sub);
857 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
859 avctx->frame_number++;
863 void avsubtitle_free(AVSubtitle *sub)
867 for (i = 0; i < sub->num_rects; i++)
869 av_freep(&sub->rects[i]->pict.data[0]);
870 av_freep(&sub->rects[i]->pict.data[1]);
871 av_freep(&sub->rects[i]->pict.data[2]);
872 av_freep(&sub->rects[i]->pict.data[3]);
873 av_freep(&sub->rects[i]->text);
874 av_freep(&sub->rects[i]->ass);
875 av_freep(&sub->rects[i]);
878 av_freep(&sub->rects);
880 memset(sub, 0, sizeof(AVSubtitle));
883 av_cold int avcodec_close(AVCodecContext *avctx)
885 /* If there is a user-supplied mutex locking routine, call it. */
887 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
891 entangled_thread_counter++;
892 if(entangled_thread_counter != 1){
893 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
894 entangled_thread_counter--;
898 if (HAVE_THREADS && avctx->thread_opaque)
899 ff_thread_free(avctx);
900 if (avctx->codec && avctx->codec->close)
901 avctx->codec->close(avctx);
902 avcodec_default_free_buffers(avctx);
903 avctx->coded_frame = NULL;
904 if (avctx->codec && avctx->codec->priv_class)
905 av_opt_free(avctx->priv_data);
907 av_freep(&avctx->priv_data);
908 if(avctx->codec && avctx->codec->encode)
909 av_freep(&avctx->extradata);
911 avctx->active_thread_type = 0;
912 entangled_thread_counter--;
914 /* Release any user-supplied mutex. */
916 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
921 AVCodec *avcodec_find_encoder(enum CodecID id)
923 AVCodec *p, *experimental=NULL;
926 if (p->encode != NULL && p->id == id) {
927 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
937 AVCodec *avcodec_find_encoder_by_name(const char *name)
944 if (p->encode != NULL && strcmp(name,p->name) == 0)
951 AVCodec *avcodec_find_decoder(enum CodecID id)
953 AVCodec *p, *experimental=NULL;
956 if (p->decode != NULL && p->id == id) {
957 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
967 AVCodec *avcodec_find_decoder_by_name(const char *name)
974 if (p->decode != NULL && strcmp(name,p->name) == 0)
981 static int get_bit_rate(AVCodecContext *ctx)
986 switch(ctx->codec_type) {
987 case AVMEDIA_TYPE_VIDEO:
988 case AVMEDIA_TYPE_DATA:
989 case AVMEDIA_TYPE_SUBTITLE:
990 case AVMEDIA_TYPE_ATTACHMENT:
991 bit_rate = ctx->bit_rate;
993 case AVMEDIA_TYPE_AUDIO:
994 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
995 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1004 const char *avcodec_get_name(enum CodecID id)
1010 #include "libavcodec/codec_names.h"
1012 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1014 codec = avcodec_find_decoder(id);
1017 codec = avcodec_find_encoder(id);
1020 return "unknown_codec";
1023 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1025 int i, len, ret = 0;
1027 for (i = 0; i < 4; i++) {
1028 len = snprintf(buf, buf_size,
1029 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1031 buf_size = buf_size > len ? buf_size - len : 0;
1038 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1040 const char *codec_type;
1041 const char *codec_name;
1042 const char *profile = NULL;
1045 AVRational display_aspect_ratio;
1047 if (!buf || buf_size <= 0)
1049 codec_type = av_get_media_type_string(enc->codec_type);
1050 codec_name = avcodec_get_name(enc->codec_id);
1051 if (enc->profile != FF_PROFILE_UNKNOWN) {
1052 p = encode ? avcodec_find_encoder(enc->codec_id) :
1053 avcodec_find_decoder(enc->codec_id);
1055 profile = av_get_profile_name(p, enc->profile);
1058 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1059 codec_name, enc->mb_decision ? " (hq)" : "");
1060 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1062 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1063 if (enc->codec_tag) {
1065 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1066 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1067 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1069 switch(enc->codec_type) {
1070 case AVMEDIA_TYPE_VIDEO:
1071 if (enc->pix_fmt != PIX_FMT_NONE) {
1072 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1074 av_get_pix_fmt_name(enc->pix_fmt));
1077 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1079 enc->width, enc->height);
1080 if (enc->sample_aspect_ratio.num) {
1081 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1082 enc->width*enc->sample_aspect_ratio.num,
1083 enc->height*enc->sample_aspect_ratio.den,
1085 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1086 " [SAR %d:%d DAR %d:%d]",
1087 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1088 display_aspect_ratio.num, display_aspect_ratio.den);
1090 if(av_log_get_level() >= AV_LOG_DEBUG){
1091 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1092 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1094 enc->time_base.num/g, enc->time_base.den/g);
1098 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1099 ", q=%d-%d", enc->qmin, enc->qmax);
1102 case AVMEDIA_TYPE_AUDIO:
1103 if (enc->sample_rate) {
1104 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1105 ", %d Hz", enc->sample_rate);
1107 av_strlcat(buf, ", ", buf_size);
1108 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1109 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1110 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1111 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1118 if (enc->flags & CODEC_FLAG_PASS1)
1119 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1121 if (enc->flags & CODEC_FLAG_PASS2)
1122 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1125 bitrate = get_bit_rate(enc);
1127 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1128 ", %d kb/s", bitrate / 1000);
1132 const char *av_get_profile_name(const AVCodec *codec, int profile)
1135 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1138 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1139 if (p->profile == profile)
1145 unsigned avcodec_version( void )
1147 return LIBAVCODEC_VERSION_INT;
1150 const char *avcodec_configuration(void)
1152 return FFMPEG_CONFIGURATION;
1155 const char *avcodec_license(void)
1157 #define LICENSE_PREFIX "libavcodec license: "
1158 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1161 void avcodec_flush_buffers(AVCodecContext *avctx)
1163 if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1164 ff_thread_flush(avctx);
1165 else if(avctx->codec->flush)
1166 avctx->codec->flush(avctx);
1169 void avcodec_default_free_buffers(AVCodecContext *s){
1172 if(s->internal_buffer==NULL) return;
1174 if (s->internal_buffer_count)
1175 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1176 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1177 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1179 av_freep(&buf->base[j]);
1183 av_freep(&s->internal_buffer);
1185 s->internal_buffer_count=0;
1188 #if FF_API_OLD_FF_PICT_TYPES
1189 char av_get_pict_type_char(int pict_type){
1190 return av_get_picture_type_char(pict_type);
1194 int av_get_bits_per_sample(enum CodecID codec_id){
1196 case CODEC_ID_ADPCM_SBPRO_2:
1198 case CODEC_ID_ADPCM_SBPRO_3:
1200 case CODEC_ID_ADPCM_SBPRO_4:
1201 case CODEC_ID_ADPCM_CT:
1202 case CODEC_ID_ADPCM_IMA_WAV:
1203 case CODEC_ID_ADPCM_MS:
1204 case CODEC_ID_ADPCM_YAMAHA:
1206 case CODEC_ID_ADPCM_G722:
1207 case CODEC_ID_PCM_ALAW:
1208 case CODEC_ID_PCM_MULAW:
1209 case CODEC_ID_PCM_S8:
1210 case CODEC_ID_PCM_U8:
1211 case CODEC_ID_PCM_ZORK:
1213 case CODEC_ID_PCM_S16BE:
1214 case CODEC_ID_PCM_S16LE:
1215 case CODEC_ID_PCM_S16LE_PLANAR:
1216 case CODEC_ID_PCM_U16BE:
1217 case CODEC_ID_PCM_U16LE:
1219 case CODEC_ID_PCM_S24DAUD:
1220 case CODEC_ID_PCM_S24BE:
1221 case CODEC_ID_PCM_S24LE:
1222 case CODEC_ID_PCM_U24BE:
1223 case CODEC_ID_PCM_U24LE:
1225 case CODEC_ID_PCM_S32BE:
1226 case CODEC_ID_PCM_S32LE:
1227 case CODEC_ID_PCM_U32BE:
1228 case CODEC_ID_PCM_U32LE:
1229 case CODEC_ID_PCM_F32BE:
1230 case CODEC_ID_PCM_F32LE:
1232 case CODEC_ID_PCM_F64BE:
1233 case CODEC_ID_PCM_F64LE:
1240 #if FF_API_OLD_SAMPLE_FMT
1241 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1242 return av_get_bytes_per_sample(sample_fmt) << 3;
1247 int ff_thread_init(AVCodecContext *s){
1252 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1266 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1268 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1272 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1274 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1275 "version to the newest one from Git. If the problem still "
1276 "occurs, it means that your file has a feature which has not "
1277 "been implemented.\n", feature);
1279 av_log_ask_for_sample(avc, NULL);
1282 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1284 va_list argument_list;
1286 va_start(argument_list, msg);
1289 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1290 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1291 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1292 "and contact the ffmpeg-devel mailing list.\n");
1294 va_end(argument_list);
1297 static AVHWAccel *first_hwaccel = NULL;
1299 void av_register_hwaccel(AVHWAccel *hwaccel)
1301 AVHWAccel **p = &first_hwaccel;
1305 hwaccel->next = NULL;
1308 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1310 return hwaccel ? hwaccel->next : first_hwaccel;
1313 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1315 AVHWAccel *hwaccel=NULL;
1317 while((hwaccel= av_hwaccel_next(hwaccel))){
1318 if ( hwaccel->id == codec_id
1319 && hwaccel->pix_fmt == pix_fmt)
1325 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1327 if (ff_lockmgr_cb) {
1328 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1334 if (ff_lockmgr_cb) {
1335 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1341 unsigned int ff_toupper4(unsigned int x)
1343 return toupper( x &0xFF)
1344 + (toupper((x>>8 )&0xFF)<<8 )
1345 + (toupper((x>>16)&0xFF)<<16)
1346 + (toupper((x>>24)&0xFF)<<24);
1351 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1354 return avctx->get_buffer(avctx, f);
1357 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1359 f->owner->release_buffer(f->owner, f);
1362 void ff_thread_finish_setup(AVCodecContext *avctx)
1366 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1370 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1376 #if FF_API_THREAD_INIT
1377 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1379 s->thread_count = thread_count;
1380 return ff_thread_init(s);
1384 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1386 if (codec_id <= CODEC_ID_NONE)
1387 return AVMEDIA_TYPE_UNKNOWN;
1388 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1389 return AVMEDIA_TYPE_VIDEO;
1390 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1391 return AVMEDIA_TYPE_AUDIO;
1392 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1393 return AVMEDIA_TYPE_SUBTITLE;
1395 return AVMEDIA_TYPE_UNKNOWN;