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;
51 static void *avformat_mutex;
53 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
58 min_size= FFMAX(17*min_size/16 + 32, min_size);
60 ptr= av_realloc(ptr, min_size);
61 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
69 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
74 min_size= FFMAX(17*min_size/16 + 32, min_size);
76 *p = av_malloc(min_size);
77 if (!*p) min_size = 0;
81 /* encoder management */
82 static AVCodec *first_avcodec = NULL;
84 AVCodec *av_codec_next(AVCodec *c){
86 else return first_avcodec;
89 #if !FF_API_AVCODEC_INIT
92 void avcodec_init(void)
94 static int initialized = 0;
100 dsputil_static_init();
103 void avcodec_register(AVCodec *codec)
108 while (*p != NULL) p = &(*p)->next;
112 if (codec->init_static_data)
113 codec->init_static_data(codec);
116 unsigned avcodec_get_edge_width(void)
121 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
122 s->coded_width = width;
123 s->coded_height= height;
124 s->width = -((-width )>>s->lowres);
125 s->height= -((-height)>>s->lowres);
128 #define INTERNAL_BUFFER_SIZE (32+1)
130 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
135 case PIX_FMT_YUV420P:
136 case PIX_FMT_YUYV422:
137 case PIX_FMT_UYVY422:
138 case PIX_FMT_YUV422P:
139 case PIX_FMT_YUV440P:
140 case PIX_FMT_YUV444P:
143 case PIX_FMT_GRAY16BE:
144 case PIX_FMT_GRAY16LE:
145 case PIX_FMT_YUVJ420P:
146 case PIX_FMT_YUVJ422P:
147 case PIX_FMT_YUVJ440P:
148 case PIX_FMT_YUVJ444P:
149 case PIX_FMT_YUVA420P:
150 case PIX_FMT_YUV420P9LE:
151 case PIX_FMT_YUV420P9BE:
152 case PIX_FMT_YUV420P10LE:
153 case PIX_FMT_YUV420P10BE:
154 case PIX_FMT_YUV422P9LE:
155 case PIX_FMT_YUV422P9BE:
156 case PIX_FMT_YUV422P10LE:
157 case PIX_FMT_YUV422P10BE:
158 case PIX_FMT_YUV444P9LE:
159 case PIX_FMT_YUV444P9BE:
160 case PIX_FMT_YUV444P10LE:
161 case PIX_FMT_YUV444P10BE:
162 case PIX_FMT_GBRP9LE:
163 case PIX_FMT_GBRP9BE:
164 case PIX_FMT_GBRP10LE:
165 case PIX_FMT_GBRP10BE:
166 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
168 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)
169 h_align= 32; // interlaced is rounded up to 2 MBs
171 case PIX_FMT_YUV411P:
172 case PIX_FMT_UYYVYY411:
176 case PIX_FMT_YUV410P:
177 if(s->codec_id == CODEC_ID_SVQ1){
182 if(s->codec_id == CODEC_ID_RPZA){
189 if(s->codec_id == CODEC_ID_SMC){
195 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
206 if(s->codec_id == CODEC_ID_IFF_ILBM || s->codec_id == CODEC_ID_IFF_BYTERUN1){
207 w_align= FFMAX(w_align, 8);
210 *width = FFALIGN(*width , w_align);
211 *height= FFALIGN(*height, h_align);
212 if(s->codec_id == CODEC_ID_H264 || s->lowres)
213 *height+=2; // some of the optimized chroma MC reads one line too much
214 // which is also done in mpeg decoders with lowres > 0
219 linesize_align[3] = STRIDE_ALIGN;
220 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
221 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
222 //picture size unneccessarily in some cases. The solution here is not
223 //pretty and better ideas are welcome!
225 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
226 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
227 s->codec_id == CODEC_ID_VP6A || s->codec_id == CODEC_ID_DIRAC) {
230 linesize_align[2] = 16;
235 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
236 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
237 int linesize_align[4];
239 avcodec_align_dimensions2(s, width, height, linesize_align);
240 align = FFMAX(linesize_align[0], linesize_align[3]);
241 linesize_align[1] <<= chroma_shift;
242 linesize_align[2] <<= chroma_shift;
243 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
244 *width=FFALIGN(*width, align);
247 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic)
250 pic->pkt_pts = s->pkt->pts;
251 pic->pkt_pos = s->pkt->pos;
253 pic->pkt_pts = AV_NOPTS_VALUE;
256 pic->reordered_opaque= s->reordered_opaque;
257 pic->sample_aspect_ratio = s->sample_aspect_ratio;
258 pic->width = s->width;
259 pic->height = s->height;
260 pic->format = s->pix_fmt;
263 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
269 AVCodecInternal *avci = s->internal;
271 if(pic->data[0]!=NULL) {
272 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
275 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
276 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
280 if(av_image_check_size(w, h, 0, s))
284 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
285 sizeof(InternalBuffer));
288 buf = &avci->buffer[avci->buffer_count];
289 picture_number = &(avci->buffer[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
292 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
293 if(s->active_thread_type&FF_THREAD_FRAME) {
294 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
299 av_freep(&buf->base[i]);
305 pic->age= *picture_number - buf->last_pic_num;
306 buf->last_pic_num= *picture_number;
308 int h_chroma_shift, v_chroma_shift;
314 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
316 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
318 avcodec_align_dimensions2(s, &w, &h, stride_align);
320 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
326 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
327 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
328 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
329 // increase alignment of w for next try (rhs gives the lowest bit set in w)
334 unaligned |= picture.linesize[i] % stride_align[i];
338 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
342 for (i=0; i<3 && picture.data[i+1]; i++)
343 size[i] = picture.data[i+1] - picture.data[i];
344 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
346 buf->last_pic_num= -256*256*256*64;
347 memset(buf->base, 0, sizeof(buf->base));
348 memset(buf->data, 0, sizeof(buf->data));
350 for(i=0; i<4 && size[i]; i++){
351 const int h_shift= i==0 ? 0 : h_chroma_shift;
352 const int v_shift= i==0 ? 0 : v_chroma_shift;
354 buf->linesize[i]= picture.linesize[i];
356 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
357 if(buf->base[i]==NULL) return -1;
358 memset(buf->base[i], 128, size[i]);
360 // no edge if EDGE EMU or not planar YUV
361 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
362 buf->data[i] = buf->base[i];
364 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
366 if(size[1] && !size[2])
367 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
368 buf->width = s->width;
369 buf->height = s->height;
370 buf->pix_fmt= s->pix_fmt;
371 pic->age= 256*256*256*64;
373 pic->type= FF_BUFFER_TYPE_INTERNAL;
376 pic->base[i]= buf->base[i];
377 pic->data[i]= buf->data[i];
378 pic->linesize[i]= buf->linesize[i];
380 avci->buffer_count++;
383 pic->pkt_pts = s->pkt->pts;
384 pic->pkt_pos = s->pkt->pos;
386 pic->pkt_pts = AV_NOPTS_VALUE;
389 pic->reordered_opaque= s->reordered_opaque;
390 pic->sample_aspect_ratio = s->sample_aspect_ratio;
391 pic->width = s->width;
392 pic->height = s->height;
393 pic->format = s->pix_fmt;
395 if(s->debug&FF_DEBUG_BUFFERS)
396 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
397 "buffers used\n", pic, avci->buffer_count);
402 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
404 InternalBuffer *buf, *last;
405 AVCodecInternal *avci = s->internal;
407 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
408 assert(avci->buffer_count);
411 buf = NULL; /* avoids warning */
412 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
413 buf = &avci->buffer[i];
414 if (buf->data[0] == pic->data[0])
417 assert(i < avci->buffer_count);
418 avci->buffer_count--;
419 last = &avci->buffer[avci->buffer_count];
421 FFSWAP(InternalBuffer, *buf, *last);
426 // pic->base[i]=NULL;
428 //printf("R%X\n", pic->opaque);
430 if(s->debug&FF_DEBUG_BUFFERS)
431 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
432 "buffers used\n", pic, avci->buffer_count);
435 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
439 /* If no picture return a new buffer */
440 if(pic->data[0] == NULL) {
441 /* We will copy from buffer, so must be readable */
442 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
443 return s->get_buffer(s, pic);
446 /* If internal buffer type return the same buffer */
447 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
448 if(s->pkt) pic->pkt_pts= s->pkt->pts;
449 else pic->pkt_pts= AV_NOPTS_VALUE;
450 pic->reordered_opaque= s->reordered_opaque;
455 * Not internal type and reget_buffer not overridden, emulate cr buffer
458 for(i = 0; i < 4; i++)
459 pic->data[i] = pic->base[i] = NULL;
461 /* Allocate new frame */
462 if (s->get_buffer(s, pic))
464 /* Copy image data from old buffer to new buffer */
465 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
467 s->release_buffer(s, &temp_pic); // Release old frame
471 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
474 for(i=0; i<count; i++){
475 int r= func(c, (char*)arg + i*size);
481 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
484 for(i=0; i<count; i++){
485 int r= func(c, arg, i, 0);
491 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
492 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
497 void avcodec_get_frame_defaults(AVFrame *pic){
498 memset(pic, 0, sizeof(AVFrame));
500 pic->pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
503 pic->sample_aspect_ratio = (AVRational){0, 1};
504 pic->format = -1; /* unknown */
507 AVFrame *avcodec_alloc_frame(void){
508 AVFrame *pic= av_malloc(sizeof(AVFrame));
510 if(pic==NULL) return NULL;
512 avcodec_get_frame_defaults(pic);
517 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
519 memset(sub, 0, sizeof(*sub));
520 sub->pts = AV_NOPTS_VALUE;
523 #if FF_API_AVCODEC_OPEN
524 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
526 return avcodec_open2(avctx, codec, NULL);
530 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
533 AVDictionary *tmp = NULL;
536 av_dict_copy(&tmp, *options, 0);
538 /* If there is a user-supplied mutex locking routine, call it. */
540 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
544 entangled_thread_counter++;
545 if(entangled_thread_counter != 1){
546 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
551 if(avctx->codec || !codec) {
552 ret = AVERROR(EINVAL);
556 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
557 if (!avctx->internal) {
558 ret = AVERROR(ENOMEM);
562 if (codec->priv_data_size > 0) {
563 if(!avctx->priv_data){
564 avctx->priv_data = av_mallocz(codec->priv_data_size);
565 if (!avctx->priv_data) {
566 ret = AVERROR(ENOMEM);
569 if (codec->priv_class) {
570 *(AVClass**)avctx->priv_data= codec->priv_class;
571 av_opt_set_defaults(avctx->priv_data);
574 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
577 avctx->priv_data = NULL;
579 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
582 //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
583 if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){
584 if(avctx->coded_width && avctx->coded_height)
585 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
586 else if(avctx->width && avctx->height)
587 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
590 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
591 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
592 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
593 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
594 avcodec_set_dimensions(avctx, 0, 0);
597 /* if the decoder init function was already called previously,
598 free the already allocated subtitle_header before overwriting it */
600 av_freep(&avctx->subtitle_header);
602 #define SANE_NB_CHANNELS 128U
603 if (avctx->channels > SANE_NB_CHANNELS) {
604 ret = AVERROR(EINVAL);
608 avctx->codec = codec;
609 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
610 avctx->codec_id == CODEC_ID_NONE) {
611 avctx->codec_type = codec->type;
612 avctx->codec_id = codec->id;
614 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
615 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
616 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
617 ret = AVERROR(EINVAL);
620 avctx->frame_number = 0;
623 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition separate: %d; %d\n",
624 avctx->error_recognition, avctx->err_recognition);
625 switch(avctx->error_recognition){
626 case FF_ER_EXPLODE : avctx->err_recognition |= AV_EF_EXPLODE | AV_EF_COMPLIANT | AV_EF_CAREFUL;
628 case FF_ER_VERY_AGGRESSIVE:
629 case FF_ER_AGGRESSIVE : avctx->err_recognition |= AV_EF_AGGRESSIVE;
630 case FF_ER_COMPLIANT : avctx->err_recognition |= AV_EF_COMPLIANT;
631 case FF_ER_CAREFUL : avctx->err_recognition |= AV_EF_CAREFUL;
634 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition combined: %d; %d\n",
635 avctx->error_recognition, avctx->err_recognition);
639 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
641 if (HAVE_THREADS && !avctx->thread_opaque) {
642 ret = ff_thread_init(avctx);
648 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
649 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
650 avctx->codec->max_lowres);
651 ret = AVERROR(EINVAL);
654 if (avctx->codec->encode) {
656 if (avctx->codec->sample_fmts) {
657 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
658 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
660 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
661 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
662 ret = AVERROR(EINVAL);
666 if (avctx->codec->supported_samplerates) {
667 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
668 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
670 if (avctx->codec->supported_samplerates[i] == 0) {
671 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
672 ret = AVERROR(EINVAL);
676 if (avctx->codec->channel_layouts) {
677 if (!avctx->channel_layout) {
678 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
680 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
681 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
683 if (avctx->codec->channel_layouts[i] == 0) {
684 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
685 ret = AVERROR(EINVAL);
690 if (avctx->channel_layout && avctx->channels) {
691 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
692 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
693 ret = AVERROR(EINVAL);
696 } else if (avctx->channel_layout) {
697 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
701 avctx->pts_correction_num_faulty_pts =
702 avctx->pts_correction_num_faulty_dts = 0;
703 avctx->pts_correction_last_pts =
704 avctx->pts_correction_last_dts = INT64_MIN;
706 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
707 ret = avctx->codec->init(avctx);
715 entangled_thread_counter--;
717 /* Release any user-supplied mutex. */
719 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
722 av_dict_free(options);
729 av_freep(&avctx->priv_data);
730 av_freep(&avctx->internal);
735 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
736 const short *samples)
738 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
739 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
742 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
743 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
744 avctx->frame_number++;
750 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
753 if(buf_size < FF_MIN_BUFFER_SIZE){
754 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
757 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
759 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
760 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
761 avctx->frame_number++;
762 emms_c(); //needed to avoid an emms_c() call before every return;
769 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
770 const AVSubtitle *sub)
773 if(sub->start_display_time) {
774 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
778 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
779 avctx->frame_number++;
784 * Attempt to guess proper monotonic timestamps for decoded video frames
785 * which might have incorrect times. Input timestamps may wrap around, in
786 * which case the output will as well.
788 * @param pts the pts field of the decoded AVPacket, as passed through
790 * @param dts the dts field of the decoded AVPacket
791 * @return one of the input values, may be AV_NOPTS_VALUE
793 static int64_t guess_correct_pts(AVCodecContext *ctx,
794 int64_t reordered_pts, int64_t dts)
796 int64_t pts = AV_NOPTS_VALUE;
798 if (dts != AV_NOPTS_VALUE) {
799 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
800 ctx->pts_correction_last_dts = dts;
802 if (reordered_pts != AV_NOPTS_VALUE) {
803 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
804 ctx->pts_correction_last_pts = reordered_pts;
806 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
807 && reordered_pts != AV_NOPTS_VALUE)
815 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
816 int *got_picture_ptr,
822 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
825 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
826 av_packet_split_side_data(avpkt);
828 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
829 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
832 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
834 picture->pkt_dts= avpkt->dts;
836 if(!avctx->has_b_frames){
837 picture->pkt_pos= avpkt->pos;
839 //FIXME these should be under if(!avctx->has_b_frames)
840 if (!picture->sample_aspect_ratio.num)
841 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
843 picture->width = avctx->width;
844 if (!picture->height)
845 picture->height = avctx->height;
846 if (picture->format == PIX_FMT_NONE)
847 picture->format = avctx->pix_fmt;
850 emms_c(); //needed to avoid an emms_c() call before every return;
853 if (*got_picture_ptr){
854 avctx->frame_number++;
855 picture->best_effort_timestamp = guess_correct_pts(avctx,
865 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
871 if (!avpkt->data && avpkt->size) {
872 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
873 return AVERROR(EINVAL);
876 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
877 av_packet_split_side_data(avpkt);
879 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
880 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
881 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
884 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
885 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
886 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
890 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
891 avctx->frame_number++;
899 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
907 avcodec_get_subtitle_defaults(sub);
908 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
910 avctx->frame_number++;
914 void avsubtitle_free(AVSubtitle *sub)
918 for (i = 0; i < sub->num_rects; i++)
920 av_freep(&sub->rects[i]->pict.data[0]);
921 av_freep(&sub->rects[i]->pict.data[1]);
922 av_freep(&sub->rects[i]->pict.data[2]);
923 av_freep(&sub->rects[i]->pict.data[3]);
924 av_freep(&sub->rects[i]->text);
925 av_freep(&sub->rects[i]->ass);
926 av_freep(&sub->rects[i]);
929 av_freep(&sub->rects);
931 memset(sub, 0, sizeof(AVSubtitle));
934 av_cold int avcodec_close(AVCodecContext *avctx)
936 /* If there is a user-supplied mutex locking routine, call it. */
938 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
942 entangled_thread_counter++;
943 if(entangled_thread_counter != 1){
944 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
945 entangled_thread_counter--;
949 if (HAVE_THREADS && avctx->thread_opaque)
950 ff_thread_free(avctx);
951 if (avctx->codec && avctx->codec->close)
952 avctx->codec->close(avctx);
953 avcodec_default_free_buffers(avctx);
954 avctx->coded_frame = NULL;
955 av_freep(&avctx->internal);
956 if (avctx->codec && avctx->codec->priv_class)
957 av_opt_free(avctx->priv_data);
959 av_freep(&avctx->priv_data);
960 if(avctx->codec && avctx->codec->encode)
961 av_freep(&avctx->extradata);
963 avctx->active_thread_type = 0;
964 entangled_thread_counter--;
966 /* Release any user-supplied mutex. */
968 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
973 static enum CodecID remap_deprecated_codec_id(enum CodecID id)
976 case CODEC_ID_G723_1_DEPRECATED : return CODEC_ID_G723_1;
977 case CODEC_ID_G729_DEPRECATED : return CODEC_ID_G729;
978 case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO;
983 AVCodec *avcodec_find_encoder(enum CodecID id)
985 AVCodec *p, *experimental=NULL;
987 id= remap_deprecated_codec_id(id);
989 if (p->encode != NULL && p->id == id) {
990 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1000 AVCodec *avcodec_find_encoder_by_name(const char *name)
1007 if (p->encode != NULL && strcmp(name,p->name) == 0)
1014 AVCodec *avcodec_find_decoder(enum CodecID id)
1016 AVCodec *p, *experimental=NULL;
1018 id= remap_deprecated_codec_id(id);
1020 if (p->decode != NULL && p->id == id) {
1021 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1028 return experimental;
1031 AVCodec *avcodec_find_decoder_by_name(const char *name)
1038 if (p->decode != NULL && strcmp(name,p->name) == 0)
1045 static int get_bit_rate(AVCodecContext *ctx)
1048 int bits_per_sample;
1050 switch(ctx->codec_type) {
1051 case AVMEDIA_TYPE_VIDEO:
1052 case AVMEDIA_TYPE_DATA:
1053 case AVMEDIA_TYPE_SUBTITLE:
1054 case AVMEDIA_TYPE_ATTACHMENT:
1055 bit_rate = ctx->bit_rate;
1057 case AVMEDIA_TYPE_AUDIO:
1058 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1059 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1068 const char *avcodec_get_name(enum CodecID id)
1074 #include "libavcodec/codec_names.h"
1076 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1078 codec = avcodec_find_decoder(id);
1081 codec = avcodec_find_encoder(id);
1084 return "unknown_codec";
1087 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1089 int i, len, ret = 0;
1091 for (i = 0; i < 4; i++) {
1092 len = snprintf(buf, buf_size,
1093 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1095 buf_size = buf_size > len ? buf_size - len : 0;
1102 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1104 const char *codec_type;
1105 const char *codec_name;
1106 const char *profile = NULL;
1109 AVRational display_aspect_ratio;
1111 if (!buf || buf_size <= 0)
1113 codec_type = av_get_media_type_string(enc->codec_type);
1114 codec_name = avcodec_get_name(enc->codec_id);
1115 if (enc->profile != FF_PROFILE_UNKNOWN) {
1116 p = encode ? avcodec_find_encoder(enc->codec_id) :
1117 avcodec_find_decoder(enc->codec_id);
1119 profile = av_get_profile_name(p, enc->profile);
1122 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1123 codec_name, enc->mb_decision ? " (hq)" : "");
1124 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1126 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1127 if (enc->codec_tag) {
1129 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1130 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1131 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1133 switch(enc->codec_type) {
1134 case AVMEDIA_TYPE_VIDEO:
1135 if (enc->pix_fmt != PIX_FMT_NONE) {
1136 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1138 av_get_pix_fmt_name(enc->pix_fmt));
1141 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1143 enc->width, enc->height);
1144 if (enc->sample_aspect_ratio.num) {
1145 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1146 enc->width*enc->sample_aspect_ratio.num,
1147 enc->height*enc->sample_aspect_ratio.den,
1149 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1150 " [SAR %d:%d DAR %d:%d]",
1151 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1152 display_aspect_ratio.num, display_aspect_ratio.den);
1154 if(av_log_get_level() >= AV_LOG_DEBUG){
1155 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1156 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1158 enc->time_base.num/g, enc->time_base.den/g);
1162 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1163 ", q=%d-%d", enc->qmin, enc->qmax);
1166 case AVMEDIA_TYPE_AUDIO:
1167 if (enc->sample_rate) {
1168 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1169 ", %d Hz", enc->sample_rate);
1171 av_strlcat(buf, ", ", buf_size);
1172 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1173 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1174 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1175 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1182 if (enc->flags & CODEC_FLAG_PASS1)
1183 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1185 if (enc->flags & CODEC_FLAG_PASS2)
1186 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1189 bitrate = get_bit_rate(enc);
1191 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1192 ", %d kb/s", bitrate / 1000);
1196 const char *av_get_profile_name(const AVCodec *codec, int profile)
1199 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1202 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1203 if (p->profile == profile)
1209 unsigned avcodec_version( void )
1211 return LIBAVCODEC_VERSION_INT;
1214 const char *avcodec_configuration(void)
1216 return FFMPEG_CONFIGURATION;
1219 const char *avcodec_license(void)
1221 #define LICENSE_PREFIX "libavcodec license: "
1222 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1225 void avcodec_flush_buffers(AVCodecContext *avctx)
1227 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1228 ff_thread_flush(avctx);
1229 else if(avctx->codec->flush)
1230 avctx->codec->flush(avctx);
1233 void avcodec_default_free_buffers(AVCodecContext *s){
1234 AVCodecInternal *avci = s->internal;
1240 if (avci->buffer_count)
1241 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1242 avci->buffer_count);
1243 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1244 InternalBuffer *buf = &avci->buffer[i];
1246 av_freep(&buf->base[j]);
1250 av_freep(&avci->buffer);
1252 avci->buffer_count=0;
1255 #if FF_API_OLD_FF_PICT_TYPES
1256 char av_get_pict_type_char(int pict_type){
1257 return av_get_picture_type_char(pict_type);
1261 int av_get_bits_per_sample(enum CodecID codec_id){
1263 case CODEC_ID_ADPCM_SBPRO_2:
1265 case CODEC_ID_ADPCM_SBPRO_3:
1267 case CODEC_ID_ADPCM_SBPRO_4:
1268 case CODEC_ID_ADPCM_CT:
1269 case CODEC_ID_ADPCM_IMA_WAV:
1270 case CODEC_ID_ADPCM_IMA_QT:
1271 case CODEC_ID_ADPCM_SWF:
1272 case CODEC_ID_ADPCM_MS:
1273 case CODEC_ID_ADPCM_YAMAHA:
1275 case CODEC_ID_ADPCM_G722:
1276 case CODEC_ID_PCM_ALAW:
1277 case CODEC_ID_PCM_MULAW:
1278 case CODEC_ID_PCM_S8:
1279 case CODEC_ID_PCM_U8:
1280 case CODEC_ID_PCM_ZORK:
1282 case CODEC_ID_PCM_S16BE:
1283 case CODEC_ID_PCM_S16LE:
1284 case CODEC_ID_PCM_S16LE_PLANAR:
1285 case CODEC_ID_PCM_U16BE:
1286 case CODEC_ID_PCM_U16LE:
1288 case CODEC_ID_PCM_S24DAUD:
1289 case CODEC_ID_PCM_S24BE:
1290 case CODEC_ID_PCM_S24LE:
1291 case CODEC_ID_PCM_U24BE:
1292 case CODEC_ID_PCM_U24LE:
1294 case CODEC_ID_PCM_S32BE:
1295 case CODEC_ID_PCM_S32LE:
1296 case CODEC_ID_PCM_U32BE:
1297 case CODEC_ID_PCM_U32LE:
1298 case CODEC_ID_PCM_F32BE:
1299 case CODEC_ID_PCM_F32LE:
1301 case CODEC_ID_PCM_F64BE:
1302 case CODEC_ID_PCM_F64LE:
1309 #if FF_API_OLD_SAMPLE_FMT
1310 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1311 return av_get_bytes_per_sample(sample_fmt) << 3;
1316 int ff_thread_init(AVCodecContext *s){
1321 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1335 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1337 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1341 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1343 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1344 "version to the newest one from Git. If the problem still "
1345 "occurs, it means that your file has a feature which has not "
1346 "been implemented.\n", feature);
1348 av_log_ask_for_sample(avc, NULL);
1351 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1353 va_list argument_list;
1355 va_start(argument_list, msg);
1358 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1359 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1360 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1361 "and contact the ffmpeg-devel mailing list.\n");
1363 va_end(argument_list);
1366 static AVHWAccel *first_hwaccel = NULL;
1368 void av_register_hwaccel(AVHWAccel *hwaccel)
1370 AVHWAccel **p = &first_hwaccel;
1374 hwaccel->next = NULL;
1377 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1379 return hwaccel ? hwaccel->next : first_hwaccel;
1382 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1384 AVHWAccel *hwaccel=NULL;
1386 while((hwaccel= av_hwaccel_next(hwaccel))){
1387 if ( hwaccel->id == codec_id
1388 && hwaccel->pix_fmt == pix_fmt)
1394 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1396 if (ff_lockmgr_cb) {
1397 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1399 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1405 if (ff_lockmgr_cb) {
1406 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1408 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1414 int avpriv_lock_avformat(void)
1416 if (ff_lockmgr_cb) {
1417 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1423 int avpriv_unlock_avformat(void)
1425 if (ff_lockmgr_cb) {
1426 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1432 unsigned int avpriv_toupper4(unsigned int x)
1434 return toupper( x &0xFF)
1435 + (toupper((x>>8 )&0xFF)<<8 )
1436 + (toupper((x>>16)&0xFF)<<16)
1437 + (toupper((x>>24)&0xFF)<<24);
1442 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1446 ff_init_buffer_info(avctx, f);
1448 return avctx->get_buffer(avctx, f);
1451 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1453 f->owner->release_buffer(f->owner, f);
1456 void ff_thread_finish_setup(AVCodecContext *avctx)
1460 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1464 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1470 #if FF_API_THREAD_INIT
1471 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1473 s->thread_count = thread_count;
1474 return ff_thread_init(s);
1478 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1480 AVCodec *c= avcodec_find_decoder(codec_id);
1482 c= avcodec_find_encoder(codec_id);
1486 if (codec_id <= CODEC_ID_NONE)
1487 return AVMEDIA_TYPE_UNKNOWN;
1488 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1489 return AVMEDIA_TYPE_VIDEO;
1490 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1491 return AVMEDIA_TYPE_AUDIO;
1492 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1493 return AVMEDIA_TYPE_SUBTITLE;
1495 return AVMEDIA_TYPE_UNKNOWN;