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 typedef struct InternalBuffer{
134 enum PixelFormat pix_fmt;
137 #define INTERNAL_BUFFER_SIZE (32+1)
139 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
144 case PIX_FMT_YUV420P:
145 case PIX_FMT_YUYV422:
146 case PIX_FMT_UYVY422:
147 case PIX_FMT_YUV422P:
148 case PIX_FMT_YUV440P:
149 case PIX_FMT_YUV444P:
151 case PIX_FMT_GRAY16BE:
152 case PIX_FMT_GRAY16LE:
153 case PIX_FMT_YUVJ420P:
154 case PIX_FMT_YUVJ422P:
155 case PIX_FMT_YUVJ440P:
156 case PIX_FMT_YUVJ444P:
157 case PIX_FMT_YUVA420P:
158 case PIX_FMT_YUV420P9LE:
159 case PIX_FMT_YUV420P9BE:
160 case PIX_FMT_YUV420P10LE:
161 case PIX_FMT_YUV420P10BE:
162 case PIX_FMT_YUV422P9LE:
163 case PIX_FMT_YUV422P9BE:
164 case PIX_FMT_YUV422P10LE:
165 case PIX_FMT_YUV422P10BE:
166 case PIX_FMT_YUV444P9LE:
167 case PIX_FMT_YUV444P9BE:
168 case PIX_FMT_YUV444P10LE:
169 case PIX_FMT_YUV444P10BE:
171 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
173 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)
174 h_align= 32; // interlaced is rounded up to 2 MBs
176 case PIX_FMT_YUV411P:
177 case PIX_FMT_UYYVYY411:
181 case PIX_FMT_YUV410P:
182 if(s->codec_id == CODEC_ID_SVQ1){
187 if(s->codec_id == CODEC_ID_RPZA){
194 if(s->codec_id == CODEC_ID_SMC){
200 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
211 *width = FFALIGN(*width , w_align);
212 *height= FFALIGN(*height, h_align);
213 if(s->codec_id == CODEC_ID_H264 || s->lowres)
214 *height+=2; // some of the optimized chroma MC reads one line too much
215 // which is also done in mpeg decoders with lowres > 0
220 linesize_align[3] = STRIDE_ALIGN;
221 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
222 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
223 //picture size unneccessarily in some cases. The solution here is not
224 //pretty and better ideas are welcome!
226 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
227 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
228 s->codec_id == CODEC_ID_VP6A || s->codec_id == CODEC_ID_DIRAC) {
231 linesize_align[2] = 16;
236 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
237 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
238 int linesize_align[4];
240 avcodec_align_dimensions2(s, width, height, linesize_align);
241 align = FFMAX(linesize_align[0], linesize_align[3]);
242 linesize_align[1] <<= chroma_shift;
243 linesize_align[2] <<= chroma_shift;
244 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
245 *width=FFALIGN(*width, align);
248 void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic)
251 pic->pkt_pts = s->pkt->pts;
252 pic->pkt_pos = s->pkt->pos;
254 pic->pkt_pts = AV_NOPTS_VALUE;
257 pic->reordered_opaque= s->reordered_opaque;
258 pic->sample_aspect_ratio = s->sample_aspect_ratio;
259 pic->width = s->width;
260 pic->height = s->height;
261 pic->format = s->pix_fmt;
264 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
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(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
276 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
280 if(av_image_check_size(w, h, 0, s))
283 if(s->internal_buffer==NULL){
284 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
287 s->internal_buffer= av_fast_realloc(
289 &s->internal_buffer_size,
290 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
294 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
295 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
298 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
299 if(s->active_thread_type&FF_THREAD_FRAME) {
300 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
305 av_freep(&buf->base[i]);
311 pic->age= *picture_number - buf->last_pic_num;
312 buf->last_pic_num= *picture_number;
314 int h_chroma_shift, v_chroma_shift;
320 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
322 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
324 avcodec_align_dimensions2(s, &w, &h, stride_align);
326 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
332 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
333 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
334 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
335 // increase alignment of w for next try (rhs gives the lowest bit set in w)
340 unaligned |= picture.linesize[i] % stride_align[i];
344 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
348 for (i=0; i<3 && picture.data[i+1]; i++)
349 size[i] = picture.data[i+1] - picture.data[i];
350 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
352 buf->last_pic_num= -256*256*256*64;
353 memset(buf->base, 0, sizeof(buf->base));
354 memset(buf->data, 0, sizeof(buf->data));
356 for(i=0; i<4 && size[i]; i++){
357 const int h_shift= i==0 ? 0 : h_chroma_shift;
358 const int v_shift= i==0 ? 0 : v_chroma_shift;
360 buf->linesize[i]= picture.linesize[i];
362 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
363 if(buf->base[i]==NULL) return -1;
364 memset(buf->base[i], 128, size[i]);
366 // no edge if EDGE EMU or not planar YUV
367 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
368 buf->data[i] = buf->base[i];
370 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
372 if(size[1] && !size[2])
373 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
374 buf->width = s->width;
375 buf->height = s->height;
376 buf->pix_fmt= s->pix_fmt;
377 pic->age= 256*256*256*64;
379 pic->type= FF_BUFFER_TYPE_INTERNAL;
382 pic->base[i]= buf->base[i];
383 pic->data[i]= buf->data[i];
384 pic->linesize[i]= buf->linesize[i];
386 s->internal_buffer_count++;
389 pic->pkt_pts = s->pkt->pts;
390 pic->pkt_pos = s->pkt->pos;
392 pic->pkt_pts = AV_NOPTS_VALUE;
395 pic->reordered_opaque= s->reordered_opaque;
396 pic->sample_aspect_ratio = s->sample_aspect_ratio;
397 pic->width = s->width;
398 pic->height = s->height;
399 pic->format = s->pix_fmt;
400 pic->opaque = s->opaque;
402 if(s->debug&FF_DEBUG_BUFFERS)
403 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
408 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
410 InternalBuffer *buf, *last;
412 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
413 assert(s->internal_buffer_count);
415 if(s->internal_buffer){
416 buf = NULL; /* avoids warning */
417 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
418 buf= &((InternalBuffer*)s->internal_buffer)[i];
419 if(buf->data[0] == pic->data[0])
422 assert(i < s->internal_buffer_count);
423 s->internal_buffer_count--;
424 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
426 FFSWAP(InternalBuffer, *buf, *last);
431 // pic->base[i]=NULL;
433 //printf("R%X\n", pic->opaque);
435 if(s->debug&FF_DEBUG_BUFFERS)
436 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
439 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
443 /* If no picture return a new buffer */
444 if(pic->data[0] == NULL) {
445 /* We will copy from buffer, so must be readable */
446 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
447 return s->get_buffer(s, pic);
450 /* If internal buffer type return the same buffer */
451 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
452 if(s->pkt) pic->pkt_pts= s->pkt->pts;
453 else pic->pkt_pts= AV_NOPTS_VALUE;
454 pic->reordered_opaque= s->reordered_opaque;
459 * Not internal type and reget_buffer not overridden, emulate cr buffer
462 for(i = 0; i < 4; i++)
463 pic->data[i] = pic->base[i] = NULL;
465 /* Allocate new frame */
466 if (s->get_buffer(s, pic))
468 /* Copy image data from old buffer to new buffer */
469 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
471 s->release_buffer(s, &temp_pic); // Release old frame
475 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
478 for(i=0; i<count; i++){
479 int r= func(c, (char*)arg + i*size);
485 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
488 for(i=0; i<count; i++){
489 int r= func(c, arg, i, 0);
495 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
496 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
501 void avcodec_get_frame_defaults(AVFrame *pic){
502 memset(pic, 0, sizeof(AVFrame));
504 pic->pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
507 pic->sample_aspect_ratio = (AVRational){0, 1};
508 pic->format = -1; /* unknown */
511 AVFrame *avcodec_alloc_frame(void){
512 AVFrame *pic= av_malloc(sizeof(AVFrame));
514 if(pic==NULL) return NULL;
516 avcodec_get_frame_defaults(pic);
521 static void avcodec_get_subtitle_defaults(AVSubtitle *sub)
523 memset(sub, 0, sizeof(*sub));
524 sub->pts = AV_NOPTS_VALUE;
527 #if FF_API_AVCODEC_OPEN
528 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
530 return avcodec_open2(avctx, codec, NULL);
534 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
537 AVDictionary *tmp = NULL;
540 av_dict_copy(&tmp, *options, 0);
542 /* If there is a user-supplied mutex locking routine, call it. */
544 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
548 entangled_thread_counter++;
549 if(entangled_thread_counter != 1){
550 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
555 if(avctx->codec || !codec) {
556 ret = AVERROR(EINVAL);
560 if (codec->priv_data_size > 0) {
561 if(!avctx->priv_data){
562 avctx->priv_data = av_mallocz(codec->priv_data_size);
563 if (!avctx->priv_data) {
564 ret = AVERROR(ENOMEM);
567 if (codec->priv_class) {
568 *(AVClass**)avctx->priv_data= codec->priv_class;
569 av_opt_set_defaults(avctx->priv_data);
572 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
575 avctx->priv_data = NULL;
577 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
580 if(avctx->coded_width && avctx->coded_height)
581 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
582 else if(avctx->width && avctx->height)
583 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
585 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
586 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
587 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
588 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
589 avcodec_set_dimensions(avctx, 0, 0);
592 /* if the decoder init function was already called previously,
593 free the already allocated subtitle_header before overwriting it */
595 av_freep(&avctx->subtitle_header);
597 #define SANE_NB_CHANNELS 128U
598 if (avctx->channels > SANE_NB_CHANNELS) {
599 ret = AVERROR(EINVAL);
603 avctx->codec = codec;
604 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
605 avctx->codec_id == CODEC_ID_NONE) {
606 avctx->codec_type = codec->type;
607 avctx->codec_id = codec->id;
609 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
610 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
611 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
612 ret = AVERROR(EINVAL);
615 avctx->frame_number = 0;
618 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition separate: %d; %d\n",
619 avctx->error_recognition, avctx->err_recognition);
620 /* FF_ER_CAREFUL (==1) implies AV_EF_CRCCHECK (== 1<<1 - 1),
621 FF_ER_COMPLIANT (==2) implies AV_EF_{CRCCHECK,BITSTREAM} (== 1<<2 - 1), et cetera} */
622 avctx->err_recognition |= (1<<(avctx->error_recognition-(avctx->error_recognition>=FF_ER_VERY_AGGRESSIVE))) - 1;
623 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition combined: %d; %d\n",
624 avctx->error_recognition, avctx->err_recognition);
628 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
630 if (HAVE_THREADS && !avctx->thread_opaque) {
631 ret = ff_thread_init(avctx);
637 if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
638 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
639 avctx->codec->max_lowres);
640 ret = AVERROR(EINVAL);
643 if (avctx->codec->encode) {
645 if (avctx->codec->sample_fmts) {
646 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
647 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
649 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
650 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
651 ret = AVERROR(EINVAL);
655 if (avctx->codec->supported_samplerates) {
656 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
657 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
659 if (avctx->codec->supported_samplerates[i] == 0) {
660 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
661 ret = AVERROR(EINVAL);
665 if (avctx->codec->channel_layouts) {
666 if (!avctx->channel_layout) {
667 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
669 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
670 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
672 if (avctx->codec->channel_layouts[i] == 0) {
673 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
674 ret = AVERROR(EINVAL);
679 if (avctx->channel_layout && avctx->channels) {
680 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
681 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
682 ret = AVERROR(EINVAL);
685 } else if (avctx->channel_layout) {
686 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
690 avctx->pts_correction_num_faulty_pts =
691 avctx->pts_correction_num_faulty_dts = 0;
692 avctx->pts_correction_last_pts =
693 avctx->pts_correction_last_dts = INT64_MIN;
695 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
696 ret = avctx->codec->init(avctx);
704 entangled_thread_counter--;
706 /* Release any user-supplied mutex. */
708 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
711 av_dict_free(options);
718 av_freep(&avctx->priv_data);
723 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
724 const short *samples)
726 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
727 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
730 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
731 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
732 avctx->frame_number++;
738 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
741 if(buf_size < FF_MIN_BUFFER_SIZE){
742 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
745 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
747 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
748 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
749 avctx->frame_number++;
750 emms_c(); //needed to avoid an emms_c() call before every return;
757 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
758 const AVSubtitle *sub)
761 if(sub->start_display_time) {
762 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
766 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
767 avctx->frame_number++;
772 * Attempt to guess proper monotonic timestamps for decoded video frames
773 * which might have incorrect times. Input timestamps may wrap around, in
774 * which case the output will as well.
776 * @param pts the pts field of the decoded AVPacket, as passed through
778 * @param dts the dts field of the decoded AVPacket
779 * @return one of the input values, may be AV_NOPTS_VALUE
781 static int64_t guess_correct_pts(AVCodecContext *ctx,
782 int64_t reordered_pts, int64_t dts)
784 int64_t pts = AV_NOPTS_VALUE;
786 if (dts != AV_NOPTS_VALUE) {
787 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
788 ctx->pts_correction_last_dts = dts;
790 if (reordered_pts != AV_NOPTS_VALUE) {
791 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
792 ctx->pts_correction_last_pts = reordered_pts;
794 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
795 && reordered_pts != AV_NOPTS_VALUE)
803 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
804 int *got_picture_ptr,
810 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
813 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
814 av_packet_split_side_data(avpkt);
816 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
817 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
820 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
822 picture->pkt_dts= avpkt->dts;
824 if(!avctx->has_b_frames){
825 picture->pkt_pos= avpkt->pos;
827 //FIXME these should be under if(!avctx->has_b_frames)
828 if (!picture->sample_aspect_ratio.num)
829 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
831 picture->width = avctx->width;
832 if (!picture->height)
833 picture->height = avctx->height;
834 if (picture->format == PIX_FMT_NONE)
835 picture->format = avctx->pix_fmt;
838 emms_c(); //needed to avoid an emms_c() call before every return;
841 if (*got_picture_ptr){
842 avctx->frame_number++;
843 picture->best_effort_timestamp = guess_correct_pts(avctx,
853 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
861 if (!avpkt->data && avpkt->size) {
862 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
863 return AVERROR(EINVAL);
866 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
867 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
868 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
869 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
872 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
873 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
874 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
878 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
879 avctx->frame_number++;
887 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
895 avcodec_get_subtitle_defaults(sub);
896 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
898 avctx->frame_number++;
902 void avsubtitle_free(AVSubtitle *sub)
906 for (i = 0; i < sub->num_rects; i++)
908 av_freep(&sub->rects[i]->pict.data[0]);
909 av_freep(&sub->rects[i]->pict.data[1]);
910 av_freep(&sub->rects[i]->pict.data[2]);
911 av_freep(&sub->rects[i]->pict.data[3]);
912 av_freep(&sub->rects[i]->text);
913 av_freep(&sub->rects[i]->ass);
914 av_freep(&sub->rects[i]);
917 av_freep(&sub->rects);
919 memset(sub, 0, sizeof(AVSubtitle));
922 av_cold int avcodec_close(AVCodecContext *avctx)
924 /* If there is a user-supplied mutex locking routine, call it. */
926 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
930 entangled_thread_counter++;
931 if(entangled_thread_counter != 1){
932 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
933 entangled_thread_counter--;
937 if (HAVE_THREADS && avctx->thread_opaque)
938 ff_thread_free(avctx);
939 if (avctx->codec && avctx->codec->close)
940 avctx->codec->close(avctx);
941 avcodec_default_free_buffers(avctx);
942 avctx->coded_frame = NULL;
943 if (avctx->codec && avctx->codec->priv_class)
944 av_opt_free(avctx->priv_data);
946 av_freep(&avctx->priv_data);
947 if(avctx->codec && avctx->codec->encode)
948 av_freep(&avctx->extradata);
950 avctx->active_thread_type = 0;
951 entangled_thread_counter--;
953 /* Release any user-supplied mutex. */
955 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
960 static enum CodecID remap_deprecated_codec_id(enum CodecID id)
963 case CODEC_ID_G723_1_DEPRECATED : return CODEC_ID_G723_1;
964 case CODEC_ID_G729_DEPRECATED : return CODEC_ID_G729;
965 case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO;
970 AVCodec *avcodec_find_encoder(enum CodecID id)
972 AVCodec *p, *experimental=NULL;
974 id= remap_deprecated_codec_id(id);
976 if (p->encode != NULL && p->id == id) {
977 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
987 AVCodec *avcodec_find_encoder_by_name(const char *name)
994 if (p->encode != NULL && strcmp(name,p->name) == 0)
1001 AVCodec *avcodec_find_decoder(enum CodecID id)
1003 AVCodec *p, *experimental=NULL;
1005 id= remap_deprecated_codec_id(id);
1007 if (p->decode != NULL && p->id == id) {
1008 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1015 return experimental;
1018 AVCodec *avcodec_find_decoder_by_name(const char *name)
1025 if (p->decode != NULL && strcmp(name,p->name) == 0)
1032 static int get_bit_rate(AVCodecContext *ctx)
1035 int bits_per_sample;
1037 switch(ctx->codec_type) {
1038 case AVMEDIA_TYPE_VIDEO:
1039 case AVMEDIA_TYPE_DATA:
1040 case AVMEDIA_TYPE_SUBTITLE:
1041 case AVMEDIA_TYPE_ATTACHMENT:
1042 bit_rate = ctx->bit_rate;
1044 case AVMEDIA_TYPE_AUDIO:
1045 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1046 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1055 const char *avcodec_get_name(enum CodecID id)
1061 #include "libavcodec/codec_names.h"
1063 av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
1065 codec = avcodec_find_decoder(id);
1068 codec = avcodec_find_encoder(id);
1071 return "unknown_codec";
1074 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1076 int i, len, ret = 0;
1078 for (i = 0; i < 4; i++) {
1079 len = snprintf(buf, buf_size,
1080 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1082 buf_size = buf_size > len ? buf_size - len : 0;
1089 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1091 const char *codec_type;
1092 const char *codec_name;
1093 const char *profile = NULL;
1096 AVRational display_aspect_ratio;
1098 if (!buf || buf_size <= 0)
1100 codec_type = av_get_media_type_string(enc->codec_type);
1101 codec_name = avcodec_get_name(enc->codec_id);
1102 if (enc->profile != FF_PROFILE_UNKNOWN) {
1103 p = encode ? avcodec_find_encoder(enc->codec_id) :
1104 avcodec_find_decoder(enc->codec_id);
1106 profile = av_get_profile_name(p, enc->profile);
1109 snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown",
1110 codec_name, enc->mb_decision ? " (hq)" : "");
1111 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
1113 snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
1114 if (enc->codec_tag) {
1116 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1117 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1118 " (%s / 0x%04X)", tag_buf, enc->codec_tag);
1120 switch(enc->codec_type) {
1121 case AVMEDIA_TYPE_VIDEO:
1122 if (enc->pix_fmt != PIX_FMT_NONE) {
1123 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1125 av_get_pix_fmt_name(enc->pix_fmt));
1128 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1130 enc->width, enc->height);
1131 if (enc->sample_aspect_ratio.num) {
1132 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1133 enc->width*enc->sample_aspect_ratio.num,
1134 enc->height*enc->sample_aspect_ratio.den,
1136 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1137 " [SAR %d:%d DAR %d:%d]",
1138 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1139 display_aspect_ratio.num, display_aspect_ratio.den);
1141 if(av_log_get_level() >= AV_LOG_DEBUG){
1142 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1143 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1145 enc->time_base.num/g, enc->time_base.den/g);
1149 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1150 ", q=%d-%d", enc->qmin, enc->qmax);
1153 case AVMEDIA_TYPE_AUDIO:
1154 if (enc->sample_rate) {
1155 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1156 ", %d Hz", enc->sample_rate);
1158 av_strlcat(buf, ", ", buf_size);
1159 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1160 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1161 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1162 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1169 if (enc->flags & CODEC_FLAG_PASS1)
1170 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1172 if (enc->flags & CODEC_FLAG_PASS2)
1173 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1176 bitrate = get_bit_rate(enc);
1178 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1179 ", %d kb/s", bitrate / 1000);
1183 const char *av_get_profile_name(const AVCodec *codec, int profile)
1186 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1189 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1190 if (p->profile == profile)
1196 unsigned avcodec_version( void )
1198 return LIBAVCODEC_VERSION_INT;
1201 const char *avcodec_configuration(void)
1203 return FFMPEG_CONFIGURATION;
1206 const char *avcodec_license(void)
1208 #define LICENSE_PREFIX "libavcodec license: "
1209 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1212 void avcodec_flush_buffers(AVCodecContext *avctx)
1214 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1215 ff_thread_flush(avctx);
1216 else if(avctx->codec->flush)
1217 avctx->codec->flush(avctx);
1220 void avcodec_default_free_buffers(AVCodecContext *s){
1223 if(s->internal_buffer==NULL) return;
1225 if (s->internal_buffer_count)
1226 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1227 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1228 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1230 av_freep(&buf->base[j]);
1234 av_freep(&s->internal_buffer);
1236 s->internal_buffer_count=0;
1239 #if FF_API_OLD_FF_PICT_TYPES
1240 char av_get_pict_type_char(int pict_type){
1241 return av_get_picture_type_char(pict_type);
1245 int av_get_bits_per_sample(enum CodecID codec_id){
1247 case CODEC_ID_ADPCM_SBPRO_2:
1249 case CODEC_ID_ADPCM_SBPRO_3:
1251 case CODEC_ID_ADPCM_SBPRO_4:
1252 case CODEC_ID_ADPCM_CT:
1253 case CODEC_ID_ADPCM_IMA_WAV:
1254 case CODEC_ID_ADPCM_IMA_QT:
1255 case CODEC_ID_ADPCM_SWF:
1256 case CODEC_ID_ADPCM_MS:
1257 case CODEC_ID_ADPCM_YAMAHA:
1259 case CODEC_ID_ADPCM_G722:
1260 case CODEC_ID_PCM_ALAW:
1261 case CODEC_ID_PCM_MULAW:
1262 case CODEC_ID_PCM_S8:
1263 case CODEC_ID_PCM_U8:
1264 case CODEC_ID_PCM_ZORK:
1266 case CODEC_ID_PCM_S16BE:
1267 case CODEC_ID_PCM_S16LE:
1268 case CODEC_ID_PCM_S16LE_PLANAR:
1269 case CODEC_ID_PCM_U16BE:
1270 case CODEC_ID_PCM_U16LE:
1272 case CODEC_ID_PCM_S24DAUD:
1273 case CODEC_ID_PCM_S24BE:
1274 case CODEC_ID_PCM_S24LE:
1275 case CODEC_ID_PCM_U24BE:
1276 case CODEC_ID_PCM_U24LE:
1278 case CODEC_ID_PCM_S32BE:
1279 case CODEC_ID_PCM_S32LE:
1280 case CODEC_ID_PCM_U32BE:
1281 case CODEC_ID_PCM_U32LE:
1282 case CODEC_ID_PCM_F32BE:
1283 case CODEC_ID_PCM_F32LE:
1285 case CODEC_ID_PCM_F64BE:
1286 case CODEC_ID_PCM_F64LE:
1293 #if FF_API_OLD_SAMPLE_FMT
1294 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1295 return av_get_bytes_per_sample(sample_fmt) << 3;
1300 int ff_thread_init(AVCodecContext *s){
1305 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1319 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1321 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1325 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1327 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1328 "version to the newest one from Git. If the problem still "
1329 "occurs, it means that your file has a feature which has not "
1330 "been implemented.\n", feature);
1332 av_log_ask_for_sample(avc, NULL);
1335 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1337 va_list argument_list;
1339 va_start(argument_list, msg);
1342 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1343 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1344 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1345 "and contact the ffmpeg-devel mailing list.\n");
1347 va_end(argument_list);
1350 static AVHWAccel *first_hwaccel = NULL;
1352 void av_register_hwaccel(AVHWAccel *hwaccel)
1354 AVHWAccel **p = &first_hwaccel;
1358 hwaccel->next = NULL;
1361 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1363 return hwaccel ? hwaccel->next : first_hwaccel;
1366 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1368 AVHWAccel *hwaccel=NULL;
1370 while((hwaccel= av_hwaccel_next(hwaccel))){
1371 if ( hwaccel->id == codec_id
1372 && hwaccel->pix_fmt == pix_fmt)
1378 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1380 if (ff_lockmgr_cb) {
1381 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1383 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1389 if (ff_lockmgr_cb) {
1390 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1392 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1398 int avpriv_lock_avformat(void)
1400 if (ff_lockmgr_cb) {
1401 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1407 int avpriv_unlock_avformat(void)
1409 if (ff_lockmgr_cb) {
1410 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1416 unsigned int avpriv_toupper4(unsigned int x)
1418 return toupper( x &0xFF)
1419 + (toupper((x>>8 )&0xFF)<<8 )
1420 + (toupper((x>>16)&0xFF)<<16)
1421 + (toupper((x>>24)&0xFF)<<24);
1426 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1430 ff_init_buffer_info(avctx, f);
1432 return avctx->get_buffer(avctx, f);
1435 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1437 f->owner->release_buffer(f->owner, f);
1440 void ff_thread_finish_setup(AVCodecContext *avctx)
1444 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1448 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1454 #if FF_API_THREAD_INIT
1455 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1457 s->thread_count = thread_count;
1458 return ff_thread_init(s);
1462 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1464 AVCodec *c= avcodec_find_decoder(codec_id);
1466 c= avcodec_find_encoder(codec_id);
1470 if (codec_id <= CODEC_ID_NONE)
1471 return AVMEDIA_TYPE_UNKNOWN;
1472 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1473 return AVMEDIA_TYPE_VIDEO;
1474 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1475 return AVMEDIA_TYPE_AUDIO;
1476 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1477 return AVMEDIA_TYPE_SUBTITLE;
1479 return AVMEDIA_TYPE_UNKNOWN;