3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of Libav.
8 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/audioconvert.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/samplefmt.h"
36 #include "libavutil/dict.h"
39 #include "libavutil/opt.h"
40 #include "imgconvert.h"
42 #include "audioconvert.h"
44 #include "bytestream.h"
50 static int volatile entangled_thread_counter=0;
51 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
52 static void *codec_mutex;
53 static void *avformat_mutex;
55 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
60 min_size= FFMAX(17*min_size/16 + 32, min_size);
62 ptr= av_realloc(ptr, min_size);
63 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
71 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
76 min_size= FFMAX(17*min_size/16 + 32, min_size);
78 *p = av_malloc(min_size);
79 if (!*p) min_size = 0;
83 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
86 if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
91 av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
93 memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
96 /* encoder management */
97 static AVCodec *first_avcodec = NULL;
99 AVCodec *av_codec_next(AVCodec *c){
100 if(c) return c->next;
101 else return first_avcodec;
104 static void avcodec_init(void)
106 static int initialized = 0;
108 if (initialized != 0)
112 ff_dsputil_static_init();
115 int av_codec_is_encoder(AVCodec *codec)
117 return codec && (codec->encode || codec->encode2);
120 int av_codec_is_decoder(AVCodec *codec)
122 return codec && codec->decode;
125 void avcodec_register(AVCodec *codec)
130 while (*p != NULL) p = &(*p)->next;
134 if (codec->init_static_data)
135 codec->init_static_data(codec);
138 unsigned avcodec_get_edge_width(void)
143 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
144 s->coded_width = width;
145 s->coded_height= height;
150 #define INTERNAL_BUFFER_SIZE (32+1)
152 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
153 int linesize_align[AV_NUM_DATA_POINTERS])
160 case PIX_FMT_YUV420P:
161 case PIX_FMT_YUYV422:
162 case PIX_FMT_UYVY422:
163 case PIX_FMT_YUV422P:
164 case PIX_FMT_YUV440P:
165 case PIX_FMT_YUV444P:
168 case PIX_FMT_GRAY16BE:
169 case PIX_FMT_GRAY16LE:
170 case PIX_FMT_YUVJ420P:
171 case PIX_FMT_YUVJ422P:
172 case PIX_FMT_YUVJ440P:
173 case PIX_FMT_YUVJ444P:
174 case PIX_FMT_YUVA420P:
175 case PIX_FMT_YUV420P9LE:
176 case PIX_FMT_YUV420P9BE:
177 case PIX_FMT_YUV420P10LE:
178 case PIX_FMT_YUV420P10BE:
179 case PIX_FMT_YUV422P9LE:
180 case PIX_FMT_YUV422P9BE:
181 case PIX_FMT_YUV422P10LE:
182 case PIX_FMT_YUV422P10BE:
183 case PIX_FMT_YUV444P9LE:
184 case PIX_FMT_YUV444P9BE:
185 case PIX_FMT_YUV444P10LE:
186 case PIX_FMT_YUV444P10BE:
187 case PIX_FMT_GBRP9LE:
188 case PIX_FMT_GBRP9BE:
189 case PIX_FMT_GBRP10LE:
190 case PIX_FMT_GBRP10BE:
191 w_align = 16; //FIXME assume 16 pixel per macroblock
192 h_align = 16 * 2; // interlaced needs 2 macroblocks height
194 case PIX_FMT_YUV411P:
195 case PIX_FMT_UYYVYY411:
199 case PIX_FMT_YUV410P:
200 if(s->codec_id == CODEC_ID_SVQ1){
205 if(s->codec_id == CODEC_ID_RPZA){
212 if(s->codec_id == CODEC_ID_SMC){
218 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
229 *width = FFALIGN(*width , w_align);
230 *height= FFALIGN(*height, h_align);
231 if (s->codec_id == CODEC_ID_H264)
232 *height+=2; // some of the optimized chroma MC reads one line too much
234 for (i = 0; i < 4; i++)
235 linesize_align[i] = STRIDE_ALIGN;
238 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
239 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
240 int linesize_align[AV_NUM_DATA_POINTERS];
242 avcodec_align_dimensions2(s, width, height, linesize_align);
243 align = FFMAX(linesize_align[0], linesize_align[3]);
244 linesize_align[1] <<= chroma_shift;
245 linesize_align[2] <<= chroma_shift;
246 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
247 *width=FFALIGN(*width, align);
250 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
251 enum AVSampleFormat sample_fmt, const uint8_t *buf,
252 int buf_size, int align)
254 int ch, planar, needed_size, ret = 0;
256 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
257 frame->nb_samples, sample_fmt,
259 if (buf_size < needed_size)
260 return AVERROR(EINVAL);
262 planar = av_sample_fmt_is_planar(sample_fmt);
263 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
264 if (!(frame->extended_data = av_mallocz(nb_channels *
265 sizeof(*frame->extended_data))))
266 return AVERROR(ENOMEM);
268 frame->extended_data = frame->data;
271 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
272 buf, nb_channels, frame->nb_samples,
273 sample_fmt, align)) < 0) {
274 if (frame->extended_data != frame->data)
275 av_free(frame->extended_data);
278 if (frame->extended_data != frame->data) {
279 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
280 frame->data[ch] = frame->extended_data[ch];
286 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
288 AVCodecInternal *avci = avctx->internal;
292 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
293 frame->nb_samples, avctx->sample_fmt,
296 return AVERROR(EINVAL);
298 /* allocate InternalBuffer if needed */
300 avci->buffer = av_mallocz(sizeof(InternalBuffer));
302 return AVERROR(ENOMEM);
306 /* if there is a previously-used internal buffer, check its size and
307 channel count to see if we can reuse it */
308 if (buf->extended_data) {
309 /* if current buffer is too small, free it */
310 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
311 av_free(buf->extended_data[0]);
312 if (buf->extended_data != buf->data)
313 av_free(&buf->extended_data);
314 buf->extended_data = NULL;
317 /* if number of channels has changed, reset and/or free extended data
318 pointers but leave data buffer in buf->data[0] for reuse */
319 if (buf->nb_channels != avctx->channels) {
320 if (buf->extended_data != buf->data)
321 av_free(buf->extended_data);
322 buf->extended_data = NULL;
326 /* if there is no previous buffer or the previous buffer cannot be used
327 as-is, allocate a new buffer and/or rearrange the channel pointers */
328 if (!buf->extended_data) {
330 if (!(buf->data[0] = av_mallocz(buf_size)))
331 return AVERROR(ENOMEM);
332 buf->audio_data_size = buf_size;
334 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
335 avctx->sample_fmt, buf->data[0],
336 buf->audio_data_size, 0)))
339 if (frame->extended_data == frame->data)
340 buf->extended_data = buf->data;
342 buf->extended_data = frame->extended_data;
343 memcpy(buf->data, frame->data, sizeof(frame->data));
344 buf->linesize[0] = frame->linesize[0];
345 buf->nb_channels = avctx->channels;
347 /* copy InternalBuffer info to the AVFrame */
348 frame->extended_data = buf->extended_data;
349 frame->linesize[0] = buf->linesize[0];
350 memcpy(frame->data, buf->data, sizeof(frame->data));
353 frame->type = FF_BUFFER_TYPE_INTERNAL;
355 if (avctx->pkt) frame->pkt_pts = avctx->pkt->pts;
356 else frame->pkt_pts = AV_NOPTS_VALUE;
357 frame->reordered_opaque = avctx->reordered_opaque;
359 frame->sample_rate = avctx->sample_rate;
360 frame->format = avctx->sample_fmt;
361 frame->channel_layout = avctx->channel_layout;
363 if (avctx->debug & FF_DEBUG_BUFFERS)
364 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
365 "internal audio buffer used\n", frame);
370 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
376 AVCodecInternal *avci = s->internal;
378 if(pic->data[0]!=NULL) {
379 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
382 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
383 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
387 if(av_image_check_size(w, h, 0, s))
391 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
392 sizeof(InternalBuffer));
395 buf = &avci->buffer[avci->buffer_count];
397 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
398 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
399 av_freep(&buf->base[i]);
405 int h_chroma_shift, v_chroma_shift;
410 int stride_align[AV_NUM_DATA_POINTERS];
411 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
413 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
415 avcodec_align_dimensions2(s, &w, &h, stride_align);
417 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
423 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
424 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
425 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
426 // increase alignment of w for next try (rhs gives the lowest bit set in w)
431 unaligned |= picture.linesize[i] % stride_align[i];
435 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
439 for (i=0; i<3 && picture.data[i+1]; i++)
440 size[i] = picture.data[i+1] - picture.data[i];
441 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
443 memset(buf->base, 0, sizeof(buf->base));
444 memset(buf->data, 0, sizeof(buf->data));
446 for(i=0; i<4 && size[i]; i++){
447 const int h_shift= i==0 ? 0 : h_chroma_shift;
448 const int v_shift= i==0 ? 0 : v_chroma_shift;
450 buf->linesize[i]= picture.linesize[i];
452 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
453 if(buf->base[i]==NULL) return -1;
454 memset(buf->base[i], 128, size[i]);
456 // no edge if EDGE EMU or not planar YUV
457 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
458 buf->data[i] = buf->base[i];
460 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
462 for (; i < AV_NUM_DATA_POINTERS; i++) {
463 buf->base[i] = buf->data[i] = NULL;
464 buf->linesize[i] = 0;
466 if(size[1] && !size[2])
467 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
468 buf->width = s->width;
469 buf->height = s->height;
470 buf->pix_fmt= s->pix_fmt;
472 pic->type= FF_BUFFER_TYPE_INTERNAL;
474 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
475 pic->base[i]= buf->base[i];
476 pic->data[i]= buf->data[i];
477 pic->linesize[i]= buf->linesize[i];
479 pic->extended_data = pic->data;
480 avci->buffer_count++;
481 pic->width = buf->width;
482 pic->height = buf->height;
483 pic->format = buf->pix_fmt;
484 pic->sample_aspect_ratio = s->sample_aspect_ratio;
486 if(s->pkt) pic->pkt_pts= s->pkt->pts;
487 else pic->pkt_pts= AV_NOPTS_VALUE;
488 pic->reordered_opaque= s->reordered_opaque;
490 if(s->debug&FF_DEBUG_BUFFERS)
491 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
492 "buffers used\n", pic, avci->buffer_count);
497 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
499 switch (avctx->codec_type) {
500 case AVMEDIA_TYPE_VIDEO:
501 return video_get_buffer(avctx, frame);
502 case AVMEDIA_TYPE_AUDIO:
503 return audio_get_buffer(avctx, frame);
509 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
511 InternalBuffer *buf, *last;
512 AVCodecInternal *avci = s->internal;
514 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
516 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
517 assert(avci->buffer_count);
520 buf = NULL; /* avoids warning */
521 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
522 buf = &avci->buffer[i];
523 if (buf->data[0] == pic->data[0])
526 assert(i < avci->buffer_count);
527 avci->buffer_count--;
528 last = &avci->buffer[avci->buffer_count];
531 FFSWAP(InternalBuffer, *buf, *last);
534 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
536 // pic->base[i]=NULL;
538 //printf("R%X\n", pic->opaque);
540 if(s->debug&FF_DEBUG_BUFFERS)
541 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
542 "buffers used\n", pic, avci->buffer_count);
545 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
549 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
551 /* If no picture return a new buffer */
552 if(pic->data[0] == NULL) {
553 /* We will copy from buffer, so must be readable */
554 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
555 return s->get_buffer(s, pic);
558 assert(s->pix_fmt == pic->format);
560 /* If internal buffer type return the same buffer */
561 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
562 if(s->pkt) pic->pkt_pts= s->pkt->pts;
563 else pic->pkt_pts= AV_NOPTS_VALUE;
564 pic->reordered_opaque= s->reordered_opaque;
569 * Not internal type and reget_buffer not overridden, emulate cr buffer
572 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
573 pic->data[i] = pic->base[i] = NULL;
575 /* Allocate new frame */
576 if (s->get_buffer(s, pic))
578 /* Copy image data from old buffer to new buffer */
579 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
581 s->release_buffer(s, &temp_pic); // Release old frame
585 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
588 for(i=0; i<count; i++){
589 int r= func(c, (char*)arg + i*size);
595 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
598 for(i=0; i<count; i++){
599 int r= func(c, arg, i, 0);
605 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
606 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
611 void avcodec_get_frame_defaults(AVFrame *pic){
612 memset(pic, 0, sizeof(AVFrame));
614 pic->pts= AV_NOPTS_VALUE;
616 pic->sample_aspect_ratio = (AVRational){0, 1};
617 pic->format = -1; /* unknown */
620 AVFrame *avcodec_alloc_frame(void){
621 AVFrame *pic= av_malloc(sizeof(AVFrame));
623 if(pic==NULL) return NULL;
625 avcodec_get_frame_defaults(pic);
630 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
633 AVDictionary *tmp = NULL;
635 if (avcodec_is_open(avctx))
638 if ((!codec && !avctx->codec)) {
639 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
640 return AVERROR(EINVAL);
642 if ((codec && avctx->codec && codec != avctx->codec)) {
643 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
644 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
645 return AVERROR(EINVAL);
648 codec = avctx->codec;
650 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
651 return AVERROR(EINVAL);
654 av_dict_copy(&tmp, *options, 0);
656 /* If there is a user-supplied mutex locking routine, call it. */
658 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
662 entangled_thread_counter++;
663 if(entangled_thread_counter != 1){
664 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
669 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
670 if (!avctx->internal) {
671 ret = AVERROR(ENOMEM);
675 if (codec->priv_data_size > 0) {
676 if(!avctx->priv_data){
677 avctx->priv_data = av_mallocz(codec->priv_data_size);
678 if (!avctx->priv_data) {
679 ret = AVERROR(ENOMEM);
682 if (codec->priv_class) {
683 *(AVClass**)avctx->priv_data= codec->priv_class;
684 av_opt_set_defaults(avctx->priv_data);
687 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
690 avctx->priv_data = NULL;
692 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
695 if(avctx->coded_width && avctx->coded_height)
696 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
697 else if(avctx->width && avctx->height)
698 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
700 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
701 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
702 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
703 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
704 avcodec_set_dimensions(avctx, 0, 0);
707 /* if the decoder init function was already called previously,
708 free the already allocated subtitle_header before overwriting it */
709 if (av_codec_is_decoder(codec))
710 av_freep(&avctx->subtitle_header);
712 #define SANE_NB_CHANNELS 128U
713 if (avctx->channels > SANE_NB_CHANNELS) {
714 ret = AVERROR(EINVAL);
718 avctx->codec = codec;
719 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
720 avctx->codec_id == CODEC_ID_NONE) {
721 avctx->codec_type = codec->type;
722 avctx->codec_id = codec->id;
724 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
725 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
726 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
727 ret = AVERROR(EINVAL);
730 avctx->frame_number = 0;
732 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
733 (!avctx->time_base.num || !avctx->time_base.den)) {
734 avctx->time_base.num = 1;
735 avctx->time_base.den = avctx->sample_rate;
738 if (HAVE_THREADS && !avctx->thread_opaque) {
739 ret = ff_thread_init(avctx);
744 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
745 avctx->thread_count = 1;
747 if (av_codec_is_encoder(avctx->codec)) {
749 if (avctx->codec->sample_fmts) {
750 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
751 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
753 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
754 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
755 ret = AVERROR(EINVAL);
759 if (avctx->codec->pix_fmts) {
760 for (i = 0; avctx->codec->pix_fmts[i] != PIX_FMT_NONE; i++)
761 if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
763 if (avctx->codec->pix_fmts[i] == PIX_FMT_NONE) {
764 av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
765 ret = AVERROR(EINVAL);
769 if (avctx->codec->supported_samplerates) {
770 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
771 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
773 if (avctx->codec->supported_samplerates[i] == 0) {
774 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
775 ret = AVERROR(EINVAL);
779 if (avctx->codec->channel_layouts) {
780 if (!avctx->channel_layout) {
781 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
783 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
784 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
786 if (avctx->codec->channel_layouts[i] == 0) {
787 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
788 ret = AVERROR(EINVAL);
793 if (avctx->channel_layout && avctx->channels) {
794 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
795 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
796 ret = AVERROR(EINVAL);
799 } else if (avctx->channel_layout) {
800 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
804 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
805 ret = avctx->codec->init(avctx);
811 if (av_codec_is_decoder(avctx->codec)) {
812 /* validate channel layout from the decoder */
813 if (avctx->channel_layout &&
814 av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
815 av_log(avctx, AV_LOG_WARNING, "channel layout does not match number of channels\n");
816 avctx->channel_layout = 0;
820 entangled_thread_counter--;
822 /* Release any user-supplied mutex. */
824 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
827 av_dict_free(options);
834 av_freep(&avctx->priv_data);
835 av_freep(&avctx->internal);
840 int ff_alloc_packet(AVPacket *avpkt, int size)
842 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
843 return AVERROR(EINVAL);
846 void *destruct = avpkt->destruct;
848 if (avpkt->size < size)
849 return AVERROR(EINVAL);
851 av_init_packet(avpkt);
852 avpkt->destruct = destruct;
856 return av_new_packet(avpkt, size);
860 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
862 const AVFrame *frame,
866 int user_packet = !!avpkt->data;
870 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
871 av_free_packet(avpkt);
872 av_init_packet(avpkt);
877 /* check for valid frame size */
879 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
880 if (frame->nb_samples > avctx->frame_size)
881 return AVERROR(EINVAL);
882 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
883 if (frame->nb_samples != avctx->frame_size)
884 return AVERROR(EINVAL);
888 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
890 if (*got_packet_ptr) {
891 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
892 if (avpkt->pts == AV_NOPTS_VALUE)
893 avpkt->pts = frame->pts;
894 if (!avpkt->duration)
895 avpkt->duration = ff_samples_to_time_base(avctx,
898 avpkt->dts = avpkt->pts;
903 if (!user_packet && avpkt->size) {
904 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size);
906 avpkt->data = new_data;
909 avctx->frame_number++;
912 if (ret < 0 || !*got_packet_ptr) {
913 av_free_packet(avpkt);
914 av_init_packet(avpkt);
918 /* NOTE: if we add any audio encoders which output non-keyframe packets,
919 this needs to be moved to the encoders, but for now we can do it
920 here to simplify things */
921 avpkt->flags |= AV_PKT_FLAG_KEY;
926 #if FF_API_OLD_DECODE_AUDIO
927 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
928 uint8_t *buf, int buf_size,
929 const short *samples)
934 int ret, samples_size, got_packet;
936 av_init_packet(&pkt);
942 avcodec_get_frame_defaults(frame);
944 if (avctx->frame_size) {
945 frame->nb_samples = avctx->frame_size;
947 /* if frame_size is not set, the number of samples must be
948 calculated from the buffer size */
950 if (!av_get_bits_per_sample(avctx->codec_id)) {
951 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
952 "support this codec\n");
953 return AVERROR(EINVAL);
955 nb_samples = (int64_t)buf_size * 8 /
956 (av_get_bits_per_sample(avctx->codec_id) *
958 if (nb_samples >= INT_MAX)
959 return AVERROR(EINVAL);
960 frame->nb_samples = nb_samples;
963 /* it is assumed that the samples buffer is large enough based on the
964 relevant parameters */
965 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
967 avctx->sample_fmt, 1);
968 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
970 samples, samples_size, 1)))
973 /* fabricate frame pts from sample count.
974 this is needed because the avcodec_encode_audio() API does not have
975 a way for the user to provide pts */
976 frame->pts = ff_samples_to_time_base(avctx,
977 avctx->internal->sample_count);
978 avctx->internal->sample_count += frame->nb_samples;
984 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
985 if (!ret && got_packet && avctx->coded_frame) {
986 avctx->coded_frame->pts = pkt.pts;
987 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
989 /* free any side data since we cannot return it */
990 if (pkt.side_data_elems > 0) {
992 for (i = 0; i < pkt.side_data_elems; i++)
993 av_free(pkt.side_data[i].data);
994 av_freep(&pkt.side_data);
995 pkt.side_data_elems = 0;
998 if (frame && frame->extended_data != frame->data)
999 av_free(frame->extended_data);
1001 return ret ? ret : pkt.size;
1005 #if FF_API_OLD_ENCODE_VIDEO
1006 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1007 const AVFrame *pict)
1010 int ret, got_packet = 0;
1012 if(buf_size < FF_MIN_BUFFER_SIZE){
1013 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1017 av_init_packet(&pkt);
1019 pkt.size = buf_size;
1021 ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
1022 if (!ret && got_packet && avctx->coded_frame) {
1023 avctx->coded_frame->pts = pkt.pts;
1024 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1027 /* free any side data since we cannot return it */
1028 if (pkt.side_data_elems > 0) {
1030 for (i = 0; i < pkt.side_data_elems; i++)
1031 av_free(pkt.side_data[i].data);
1032 av_freep(&pkt.side_data);
1033 pkt.side_data_elems = 0;
1036 return ret ? ret : pkt.size;
1040 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1042 const AVFrame *frame,
1043 int *got_packet_ptr)
1046 int user_packet = !!avpkt->data;
1048 *got_packet_ptr = 0;
1050 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1051 av_free_packet(avpkt);
1052 av_init_packet(avpkt);
1057 if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1058 return AVERROR(EINVAL);
1060 av_assert0(avctx->codec->encode2);
1062 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1064 if (!*got_packet_ptr)
1066 else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1067 avpkt->pts = avpkt->dts = frame->pts;
1069 if (!user_packet && avpkt->size) {
1070 uint8_t *new_data = av_realloc(avpkt->data, avpkt->size);
1072 avpkt->data = new_data;
1075 avctx->frame_number++;
1078 if (ret < 0 || !*got_packet_ptr)
1079 av_free_packet(avpkt);
1085 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1086 const AVSubtitle *sub)
1089 if(sub->start_display_time) {
1090 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1093 if(sub->num_rects == 0 || !sub->rects)
1095 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
1096 avctx->frame_number++;
1100 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1103 const uint8_t *data;
1106 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1109 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1110 if (!data || size < 4)
1112 flags = bytestream_get_le32(&data);
1114 if (size < 4) /* Required for any of the changes */
1116 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1117 avctx->channels = bytestream_get_le32(&data);
1120 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1123 avctx->channel_layout = bytestream_get_le64(&data);
1128 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1129 avctx->sample_rate = bytestream_get_le32(&data);
1132 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1135 avctx->width = bytestream_get_le32(&data);
1136 avctx->height = bytestream_get_le32(&data);
1137 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1142 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1143 int *got_picture_ptr,
1148 *got_picture_ptr= 0;
1149 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1153 apply_param_change(avctx, avpkt);
1155 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1156 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1157 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1160 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1162 picture->pkt_dts= avpkt->dts;
1163 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1164 picture->width = avctx->width;
1165 picture->height = avctx->height;
1166 picture->format = avctx->pix_fmt;
1169 emms_c(); //needed to avoid an emms_c() call before every return;
1171 if (*got_picture_ptr)
1172 avctx->frame_number++;
1179 #if FF_API_OLD_DECODE_AUDIO
1180 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1181 int *frame_size_ptr,
1185 int ret, got_frame = 0;
1187 if (avctx->get_buffer != avcodec_default_get_buffer) {
1188 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1189 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1190 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1191 "avcodec_decode_audio4()\n");
1192 avctx->get_buffer = avcodec_default_get_buffer;
1195 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1197 if (ret >= 0 && got_frame) {
1199 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1200 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1202 avctx->sample_fmt, 1);
1203 if (*frame_size_ptr < data_size) {
1204 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1205 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1206 return AVERROR(EINVAL);
1209 memcpy(samples, frame.extended_data[0], plane_size);
1211 if (planar && avctx->channels > 1) {
1212 uint8_t *out = ((uint8_t *)samples) + plane_size;
1213 for (ch = 1; ch < avctx->channels; ch++) {
1214 memcpy(out, frame.extended_data[ch], plane_size);
1218 *frame_size_ptr = data_size;
1220 *frame_size_ptr = 0;
1226 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1237 if (!avpkt->data && avpkt->size) {
1238 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1239 return AVERROR(EINVAL);
1242 apply_param_change(avctx, avpkt);
1244 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1245 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1246 if (ret >= 0 && *got_frame_ptr) {
1247 avctx->frame_number++;
1248 frame->pkt_dts = avpkt->dts;
1249 if (frame->format == AV_SAMPLE_FMT_NONE)
1250 frame->format = avctx->sample_fmt;
1256 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1264 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1266 avctx->frame_number++;
1270 void avsubtitle_free(AVSubtitle *sub)
1274 for (i = 0; i < sub->num_rects; i++)
1276 av_freep(&sub->rects[i]->pict.data[0]);
1277 av_freep(&sub->rects[i]->pict.data[1]);
1278 av_freep(&sub->rects[i]->pict.data[2]);
1279 av_freep(&sub->rects[i]->pict.data[3]);
1280 av_freep(&sub->rects[i]->text);
1281 av_freep(&sub->rects[i]->ass);
1282 av_freep(&sub->rects[i]);
1285 av_freep(&sub->rects);
1287 memset(sub, 0, sizeof(AVSubtitle));
1290 av_cold int avcodec_close(AVCodecContext *avctx)
1292 /* If there is a user-supplied mutex locking routine, call it. */
1293 if (ff_lockmgr_cb) {
1294 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1298 entangled_thread_counter++;
1299 if(entangled_thread_counter != 1){
1300 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1301 entangled_thread_counter--;
1305 if (avcodec_is_open(avctx)) {
1306 if (HAVE_THREADS && avctx->thread_opaque)
1307 ff_thread_free(avctx);
1308 if (avctx->codec && avctx->codec->close)
1309 avctx->codec->close(avctx);
1310 avcodec_default_free_buffers(avctx);
1311 avctx->coded_frame = NULL;
1312 av_freep(&avctx->internal);
1315 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1316 av_opt_free(avctx->priv_data);
1318 av_freep(&avctx->priv_data);
1319 if (av_codec_is_encoder(avctx->codec))
1320 av_freep(&avctx->extradata);
1321 avctx->codec = NULL;
1322 avctx->active_thread_type = 0;
1323 entangled_thread_counter--;
1325 /* Release any user-supplied mutex. */
1326 if (ff_lockmgr_cb) {
1327 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1332 AVCodec *avcodec_find_encoder(enum CodecID id)
1334 AVCodec *p, *experimental=NULL;
1337 if (av_codec_is_encoder(p) && p->id == id) {
1338 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1345 return experimental;
1348 AVCodec *avcodec_find_encoder_by_name(const char *name)
1355 if (av_codec_is_encoder(p) && strcmp(name,p->name) == 0)
1362 AVCodec *avcodec_find_decoder(enum CodecID id)
1367 if (av_codec_is_decoder(p) && p->id == id)
1374 AVCodec *avcodec_find_decoder_by_name(const char *name)
1381 if (av_codec_is_decoder(p) && strcmp(name,p->name) == 0)
1388 static int get_bit_rate(AVCodecContext *ctx)
1391 int bits_per_sample;
1393 switch(ctx->codec_type) {
1394 case AVMEDIA_TYPE_VIDEO:
1395 case AVMEDIA_TYPE_DATA:
1396 case AVMEDIA_TYPE_SUBTITLE:
1397 case AVMEDIA_TYPE_ATTACHMENT:
1398 bit_rate = ctx->bit_rate;
1400 case AVMEDIA_TYPE_AUDIO:
1401 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1402 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1411 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1413 int i, len, ret = 0;
1415 for (i = 0; i < 4; i++) {
1416 len = snprintf(buf, buf_size,
1417 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1419 buf_size = buf_size > len ? buf_size - len : 0;
1426 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1428 const char *codec_name;
1429 const char *profile = NULL;
1433 AVRational display_aspect_ratio;
1438 p = avcodec_find_encoder(enc->codec_id);
1440 p = avcodec_find_decoder(enc->codec_id);
1443 codec_name = p->name;
1444 profile = av_get_profile_name(p, enc->profile);
1445 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1446 /* fake mpeg2 transport stream codec (currently not
1448 codec_name = "mpeg2ts";
1449 } else if (enc->codec_name[0] != '\0') {
1450 codec_name = enc->codec_name;
1452 /* output avi tags */
1454 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1455 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1459 switch(enc->codec_type) {
1460 case AVMEDIA_TYPE_VIDEO:
1461 snprintf(buf, buf_size,
1463 codec_name, enc->mb_decision ? " (hq)" : "");
1465 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1467 if (enc->pix_fmt != PIX_FMT_NONE) {
1468 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1470 av_get_pix_fmt_name(enc->pix_fmt));
1473 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1475 enc->width, enc->height);
1476 if (enc->sample_aspect_ratio.num) {
1477 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1478 enc->width*enc->sample_aspect_ratio.num,
1479 enc->height*enc->sample_aspect_ratio.den,
1481 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1482 " [PAR %d:%d DAR %d:%d]",
1483 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1484 display_aspect_ratio.num, display_aspect_ratio.den);
1486 if(av_log_get_level() >= AV_LOG_DEBUG){
1487 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1488 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1490 enc->time_base.num/g, enc->time_base.den/g);
1494 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1495 ", q=%d-%d", enc->qmin, enc->qmax);
1498 case AVMEDIA_TYPE_AUDIO:
1499 snprintf(buf, buf_size,
1503 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1505 if (enc->sample_rate) {
1506 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1507 ", %d Hz", enc->sample_rate);
1509 av_strlcat(buf, ", ", buf_size);
1510 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1511 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1512 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1513 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1516 case AVMEDIA_TYPE_DATA:
1517 snprintf(buf, buf_size, "Data: %s", codec_name);
1519 case AVMEDIA_TYPE_SUBTITLE:
1520 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1522 case AVMEDIA_TYPE_ATTACHMENT:
1523 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1526 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1530 if (enc->flags & CODEC_FLAG_PASS1)
1531 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1533 if (enc->flags & CODEC_FLAG_PASS2)
1534 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1537 bitrate = get_bit_rate(enc);
1539 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1540 ", %d kb/s", bitrate / 1000);
1544 const char *av_get_profile_name(const AVCodec *codec, int profile)
1547 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1550 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1551 if (p->profile == profile)
1557 unsigned avcodec_version( void )
1559 return LIBAVCODEC_VERSION_INT;
1562 const char *avcodec_configuration(void)
1564 return LIBAV_CONFIGURATION;
1567 const char *avcodec_license(void)
1569 #define LICENSE_PREFIX "libavcodec license: "
1570 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1573 void avcodec_flush_buffers(AVCodecContext *avctx)
1575 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1576 ff_thread_flush(avctx);
1577 else if(avctx->codec->flush)
1578 avctx->codec->flush(avctx);
1581 static void video_free_buffers(AVCodecContext *s)
1583 AVCodecInternal *avci = s->internal;
1589 if (avci->buffer_count)
1590 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1591 avci->buffer_count);
1592 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1593 InternalBuffer *buf = &avci->buffer[i];
1595 av_freep(&buf->base[j]);
1599 av_freep(&avci->buffer);
1601 avci->buffer_count=0;
1604 static void audio_free_buffers(AVCodecContext *avctx)
1606 AVCodecInternal *avci = avctx->internal;
1607 InternalBuffer *buf;
1613 if (buf->extended_data) {
1614 av_free(buf->extended_data[0]);
1615 if (buf->extended_data != buf->data)
1616 av_free(buf->extended_data);
1618 av_freep(&avci->buffer);
1621 void avcodec_default_free_buffers(AVCodecContext *avctx)
1623 switch (avctx->codec_type) {
1624 case AVMEDIA_TYPE_VIDEO:
1625 video_free_buffers(avctx);
1627 case AVMEDIA_TYPE_AUDIO:
1628 audio_free_buffers(avctx);
1635 int av_get_exact_bits_per_sample(enum CodecID codec_id)
1638 case CODEC_ID_ADPCM_CT:
1639 case CODEC_ID_ADPCM_IMA_APC:
1640 case CODEC_ID_ADPCM_IMA_EA_SEAD:
1641 case CODEC_ID_ADPCM_IMA_WS:
1642 case CODEC_ID_ADPCM_G722:
1643 case CODEC_ID_ADPCM_YAMAHA:
1645 case CODEC_ID_PCM_ALAW:
1646 case CODEC_ID_PCM_MULAW:
1647 case CODEC_ID_PCM_S8:
1648 case CODEC_ID_PCM_U8:
1649 case CODEC_ID_PCM_ZORK:
1651 case CODEC_ID_PCM_S16BE:
1652 case CODEC_ID_PCM_S16LE:
1653 case CODEC_ID_PCM_S16LE_PLANAR:
1654 case CODEC_ID_PCM_U16BE:
1655 case CODEC_ID_PCM_U16LE:
1657 case CODEC_ID_PCM_S24DAUD:
1658 case CODEC_ID_PCM_S24BE:
1659 case CODEC_ID_PCM_S24LE:
1660 case CODEC_ID_PCM_U24BE:
1661 case CODEC_ID_PCM_U24LE:
1663 case CODEC_ID_PCM_S32BE:
1664 case CODEC_ID_PCM_S32LE:
1665 case CODEC_ID_PCM_U32BE:
1666 case CODEC_ID_PCM_U32LE:
1667 case CODEC_ID_PCM_F32BE:
1668 case CODEC_ID_PCM_F32LE:
1670 case CODEC_ID_PCM_F64BE:
1671 case CODEC_ID_PCM_F64LE:
1678 int av_get_bits_per_sample(enum CodecID codec_id)
1681 case CODEC_ID_ADPCM_SBPRO_2:
1683 case CODEC_ID_ADPCM_SBPRO_3:
1685 case CODEC_ID_ADPCM_SBPRO_4:
1686 case CODEC_ID_ADPCM_IMA_WAV:
1687 case CODEC_ID_ADPCM_IMA_QT:
1688 case CODEC_ID_ADPCM_SWF:
1689 case CODEC_ID_ADPCM_MS:
1692 return av_get_exact_bits_per_sample(codec_id);
1696 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
1698 int id, sr, ch, ba, tag, bps;
1700 id = avctx->codec_id;
1701 sr = avctx->sample_rate;
1702 ch = avctx->channels;
1703 ba = avctx->block_align;
1704 tag = avctx->codec_tag;
1705 bps = av_get_exact_bits_per_sample(avctx->codec_id);
1707 /* codecs with an exact constant bits per sample */
1708 if (bps > 0 && ch > 0 && frame_bytes > 0)
1709 return (frame_bytes * 8) / (bps * ch);
1710 bps = avctx->bits_per_coded_sample;
1712 /* codecs with a fixed packet duration */
1714 case CODEC_ID_ADPCM_ADX: return 32;
1715 case CODEC_ID_ADPCM_IMA_QT: return 64;
1716 case CODEC_ID_ADPCM_EA_XAS: return 128;
1717 case CODEC_ID_AMR_NB:
1719 case CODEC_ID_QCELP:
1720 case CODEC_ID_RA_144:
1721 case CODEC_ID_RA_288: return 160;
1722 case CODEC_ID_IMC: return 256;
1723 case CODEC_ID_AMR_WB:
1724 case CODEC_ID_GSM_MS: return 320;
1725 case CODEC_ID_MP1: return 384;
1726 case CODEC_ID_ATRAC1: return 512;
1727 case CODEC_ID_ATRAC3: return 1024;
1729 case CODEC_ID_MUSEPACK7: return 1152;
1730 case CODEC_ID_AC3: return 1536;
1734 /* calc from sample rate */
1735 if (id == CODEC_ID_TTA)
1736 return 256 * sr / 245;
1739 /* calc from sample rate and channels */
1740 if (id == CODEC_ID_BINKAUDIO_DCT)
1741 return (480 << (sr / 22050)) / ch;
1746 /* calc from block_align */
1747 if (id == CODEC_ID_SIPR) {
1749 case 20: return 160;
1750 case 19: return 144;
1751 case 29: return 288;
1752 case 37: return 480;
1757 if (frame_bytes > 0) {
1758 /* calc from frame_bytes only */
1759 if (id == CODEC_ID_TRUESPEECH)
1760 return 240 * (frame_bytes / 32);
1761 if (id == CODEC_ID_NELLYMOSER)
1762 return 256 * (frame_bytes / 64);
1765 /* calc from frame_bytes and bits_per_coded_sample */
1766 if (id == CODEC_ID_ADPCM_G726)
1767 return frame_bytes * 8 / bps;
1771 /* calc from frame_bytes and channels */
1773 case CODEC_ID_ADPCM_4XM:
1774 case CODEC_ID_ADPCM_IMA_ISS:
1775 return (frame_bytes - 4 * ch) * 2 / ch;
1776 case CODEC_ID_ADPCM_IMA_SMJPEG:
1777 return (frame_bytes - 4) * 2 / ch;
1778 case CODEC_ID_ADPCM_IMA_AMV:
1779 return (frame_bytes - 8) * 2 / ch;
1780 case CODEC_ID_ADPCM_XA:
1781 return (frame_bytes / 128) * 224 / ch;
1782 case CODEC_ID_INTERPLAY_DPCM:
1783 return (frame_bytes - 6 - ch) / ch;
1784 case CODEC_ID_ROQ_DPCM:
1785 return (frame_bytes - 8) / ch;
1786 case CODEC_ID_XAN_DPCM:
1787 return (frame_bytes - 2 * ch) / ch;
1788 case CODEC_ID_MACE3:
1789 return 3 * frame_bytes / ch;
1790 case CODEC_ID_MACE6:
1791 return 6 * frame_bytes / ch;
1792 case CODEC_ID_PCM_LXF:
1793 return 2 * (frame_bytes / (5 * ch));
1797 /* calc from frame_bytes, channels, and codec_tag */
1798 if (id == CODEC_ID_SOL_DPCM) {
1800 return frame_bytes / ch;
1802 return frame_bytes * 2 / ch;
1807 /* calc from frame_bytes, channels, and block_align */
1808 int blocks = frame_bytes / ba;
1809 switch (avctx->codec_id) {
1810 case CODEC_ID_ADPCM_IMA_WAV:
1811 return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
1812 case CODEC_ID_ADPCM_IMA_DK3:
1813 return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
1814 case CODEC_ID_ADPCM_IMA_DK4:
1815 return blocks * (1 + (ba - 4 * ch) * 2 / ch);
1816 case CODEC_ID_ADPCM_MS:
1817 return blocks * (2 + (ba - 7 * ch) * 2 / ch);
1822 /* calc from frame_bytes, channels, and bits_per_coded_sample */
1823 switch (avctx->codec_id) {
1824 case CODEC_ID_PCM_DVD:
1825 return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
1826 case CODEC_ID_PCM_BLURAY:
1827 return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
1828 case CODEC_ID_S302M:
1829 return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
1839 int ff_thread_init(AVCodecContext *s){
1844 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1858 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1860 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1864 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1866 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1867 "version to the newest one from Git. If the problem still "
1868 "occurs, it means that your file has a feature which has not "
1869 "been implemented.\n", feature);
1871 av_log_ask_for_sample(avc, NULL);
1874 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1876 va_list argument_list;
1878 va_start(argument_list, msg);
1881 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1882 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1883 "of this file to ftp://upload.libav.org/incoming/ "
1884 "and contact the libav-devel mailing list.\n");
1886 va_end(argument_list);
1889 static AVHWAccel *first_hwaccel = NULL;
1891 void av_register_hwaccel(AVHWAccel *hwaccel)
1893 AVHWAccel **p = &first_hwaccel;
1897 hwaccel->next = NULL;
1900 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1902 return hwaccel ? hwaccel->next : first_hwaccel;
1905 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1907 AVHWAccel *hwaccel=NULL;
1909 while((hwaccel= av_hwaccel_next(hwaccel))){
1910 if ( hwaccel->id == codec_id
1911 && hwaccel->pix_fmt == pix_fmt)
1917 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1919 if (ff_lockmgr_cb) {
1920 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1922 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1928 if (ff_lockmgr_cb) {
1929 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1931 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1937 int avpriv_lock_avformat(void)
1939 if (ff_lockmgr_cb) {
1940 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1946 int avpriv_unlock_avformat(void)
1948 if (ff_lockmgr_cb) {
1949 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1955 unsigned int avpriv_toupper4(unsigned int x)
1957 return toupper( x &0xFF)
1958 + (toupper((x>>8 )&0xFF)<<8 )
1959 + (toupper((x>>16)&0xFF)<<16)
1960 + (toupper((x>>24)&0xFF)<<24);
1965 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1968 return avctx->get_buffer(avctx, f);
1971 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1973 f->owner->release_buffer(f->owner, f);
1976 void ff_thread_finish_setup(AVCodecContext *avctx)
1980 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1984 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1990 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1992 if (codec_id <= CODEC_ID_NONE)
1993 return AVMEDIA_TYPE_UNKNOWN;
1994 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1995 return AVMEDIA_TYPE_VIDEO;
1996 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1997 return AVMEDIA_TYPE_AUDIO;
1998 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1999 return AVMEDIA_TYPE_SUBTITLE;
2001 return AVMEDIA_TYPE_UNKNOWN;
2004 int avcodec_is_open(AVCodecContext *s)
2006 return !!s->internal;