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 dsputil_static_init();
115 static av_always_inline int codec_is_encoder(AVCodec *codec)
117 return codec && (codec->encode || codec->encode2);
120 static av_always_inline int 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;
146 s->width = -((-width )>>s->lowres);
147 s->height= -((-height)>>s->lowres);
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 || s->lowres)
232 *height+=2; // some of the optimized chroma MC reads one line too much
233 // which is also done in mpeg decoders with lowres > 0
235 for (i = 0; i < 4; i++)
236 linesize_align[i] = STRIDE_ALIGN;
237 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
238 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
239 //picture size unneccessarily in some cases. The solution here is not
240 //pretty and better ideas are welcome!
242 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
243 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
244 s->codec_id == CODEC_ID_VP6A) {
245 for (i = 0; i < 4; i++)
246 linesize_align[i] = 16;
251 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
252 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
253 int linesize_align[AV_NUM_DATA_POINTERS];
255 avcodec_align_dimensions2(s, width, height, linesize_align);
256 align = FFMAX(linesize_align[0], linesize_align[3]);
257 linesize_align[1] <<= chroma_shift;
258 linesize_align[2] <<= chroma_shift;
259 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
260 *width=FFALIGN(*width, align);
263 int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
264 enum AVSampleFormat sample_fmt, const uint8_t *buf,
265 int buf_size, int align)
267 int ch, planar, needed_size, ret = 0;
269 needed_size = av_samples_get_buffer_size(NULL, nb_channels,
270 frame->nb_samples, sample_fmt,
272 if (buf_size < needed_size)
273 return AVERROR(EINVAL);
275 planar = av_sample_fmt_is_planar(sample_fmt);
276 if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
277 if (!(frame->extended_data = av_mallocz(nb_channels *
278 sizeof(*frame->extended_data))))
279 return AVERROR(ENOMEM);
281 frame->extended_data = frame->data;
284 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
285 buf, nb_channels, frame->nb_samples,
286 sample_fmt, align)) < 0) {
287 if (frame->extended_data != frame->data)
288 av_free(frame->extended_data);
291 if (frame->extended_data != frame->data) {
292 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
293 frame->data[ch] = frame->extended_data[ch];
299 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
301 AVCodecInternal *avci = avctx->internal;
305 buf_size = av_samples_get_buffer_size(NULL, avctx->channels,
306 frame->nb_samples, avctx->sample_fmt,
309 return AVERROR(EINVAL);
311 /* allocate InternalBuffer if needed */
313 avci->buffer = av_mallocz(sizeof(InternalBuffer));
315 return AVERROR(ENOMEM);
319 /* if there is a previously-used internal buffer, check its size and
320 channel count to see if we can reuse it */
321 if (buf->extended_data) {
322 /* if current buffer is too small, free it */
323 if (buf->extended_data[0] && buf_size > buf->audio_data_size) {
324 av_free(buf->extended_data[0]);
325 if (buf->extended_data != buf->data)
326 av_free(&buf->extended_data);
327 buf->extended_data = NULL;
330 /* if number of channels has changed, reset and/or free extended data
331 pointers but leave data buffer in buf->data[0] for reuse */
332 if (buf->nb_channels != avctx->channels) {
333 if (buf->extended_data != buf->data)
334 av_free(buf->extended_data);
335 buf->extended_data = NULL;
339 /* if there is no previous buffer or the previous buffer cannot be used
340 as-is, allocate a new buffer and/or rearrange the channel pointers */
341 if (!buf->extended_data) {
343 if (!(buf->data[0] = av_mallocz(buf_size)))
344 return AVERROR(ENOMEM);
345 buf->audio_data_size = buf_size;
347 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
348 avctx->sample_fmt, buf->data[0],
349 buf->audio_data_size, 32)))
352 if (frame->extended_data == frame->data)
353 buf->extended_data = buf->data;
355 buf->extended_data = frame->extended_data;
356 memcpy(buf->data, frame->data, sizeof(frame->data));
357 buf->linesize[0] = frame->linesize[0];
358 buf->nb_channels = avctx->channels;
360 /* copy InternalBuffer info to the AVFrame */
361 frame->extended_data = buf->extended_data;
362 frame->linesize[0] = buf->linesize[0];
363 memcpy(frame->data, buf->data, sizeof(frame->data));
366 frame->type = FF_BUFFER_TYPE_INTERNAL;
368 if (avctx->pkt) frame->pkt_pts = avctx->pkt->pts;
369 else frame->pkt_pts = AV_NOPTS_VALUE;
370 frame->reordered_opaque = avctx->reordered_opaque;
372 if (avctx->debug & FF_DEBUG_BUFFERS)
373 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
374 "internal audio buffer used\n", frame);
379 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
385 AVCodecInternal *avci = s->internal;
387 if(pic->data[0]!=NULL) {
388 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
391 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
392 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
396 if(av_image_check_size(w, h, 0, s))
400 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
401 sizeof(InternalBuffer));
404 buf = &avci->buffer[avci->buffer_count];
406 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
407 if(s->active_thread_type&FF_THREAD_FRAME) {
408 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
412 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
413 av_freep(&buf->base[i]);
419 int h_chroma_shift, v_chroma_shift;
424 int stride_align[AV_NUM_DATA_POINTERS];
425 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
427 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
429 avcodec_align_dimensions2(s, &w, &h, stride_align);
431 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
437 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
438 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
439 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
440 // increase alignment of w for next try (rhs gives the lowest bit set in w)
445 unaligned |= picture.linesize[i] % stride_align[i];
449 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
453 for (i=0; i<3 && picture.data[i+1]; i++)
454 size[i] = picture.data[i+1] - picture.data[i];
455 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
457 memset(buf->base, 0, sizeof(buf->base));
458 memset(buf->data, 0, sizeof(buf->data));
460 for(i=0; i<4 && size[i]; i++){
461 const int h_shift= i==0 ? 0 : h_chroma_shift;
462 const int v_shift= i==0 ? 0 : v_chroma_shift;
464 buf->linesize[i]= picture.linesize[i];
466 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
467 if(buf->base[i]==NULL) return -1;
468 memset(buf->base[i], 128, size[i]);
470 // no edge if EDGE EMU or not planar YUV
471 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
472 buf->data[i] = buf->base[i];
474 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
476 for (; i < AV_NUM_DATA_POINTERS; i++) {
477 buf->base[i] = buf->data[i] = NULL;
478 buf->linesize[i] = 0;
480 if(size[1] && !size[2])
481 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
482 buf->width = s->width;
483 buf->height = s->height;
484 buf->pix_fmt= s->pix_fmt;
486 pic->type= FF_BUFFER_TYPE_INTERNAL;
488 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
489 pic->base[i]= buf->base[i];
490 pic->data[i]= buf->data[i];
491 pic->linesize[i]= buf->linesize[i];
493 pic->extended_data = pic->data;
494 avci->buffer_count++;
496 if(s->pkt) pic->pkt_pts= s->pkt->pts;
497 else pic->pkt_pts= AV_NOPTS_VALUE;
498 pic->reordered_opaque= s->reordered_opaque;
500 if(s->debug&FF_DEBUG_BUFFERS)
501 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
502 "buffers used\n", pic, avci->buffer_count);
507 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
509 switch (avctx->codec_type) {
510 case AVMEDIA_TYPE_VIDEO:
511 return video_get_buffer(avctx, frame);
512 case AVMEDIA_TYPE_AUDIO:
513 return audio_get_buffer(avctx, frame);
519 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
521 InternalBuffer *buf, *last;
522 AVCodecInternal *avci = s->internal;
524 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
526 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
527 assert(avci->buffer_count);
530 buf = NULL; /* avoids warning */
531 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
532 buf = &avci->buffer[i];
533 if (buf->data[0] == pic->data[0])
536 assert(i < avci->buffer_count);
537 avci->buffer_count--;
538 last = &avci->buffer[avci->buffer_count];
541 FFSWAP(InternalBuffer, *buf, *last);
544 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
546 // pic->base[i]=NULL;
548 //printf("R%X\n", pic->opaque);
550 if(s->debug&FF_DEBUG_BUFFERS)
551 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
552 "buffers used\n", pic, avci->buffer_count);
555 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
559 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
561 /* If no picture return a new buffer */
562 if(pic->data[0] == NULL) {
563 /* We will copy from buffer, so must be readable */
564 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
565 return s->get_buffer(s, pic);
568 /* If internal buffer type return the same buffer */
569 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
570 if(s->pkt) pic->pkt_pts= s->pkt->pts;
571 else pic->pkt_pts= AV_NOPTS_VALUE;
572 pic->reordered_opaque= s->reordered_opaque;
577 * Not internal type and reget_buffer not overridden, emulate cr buffer
580 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
581 pic->data[i] = pic->base[i] = NULL;
583 /* Allocate new frame */
584 if (s->get_buffer(s, pic))
586 /* Copy image data from old buffer to new buffer */
587 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
589 s->release_buffer(s, &temp_pic); // Release old frame
593 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
596 for(i=0; i<count; i++){
597 int r= func(c, (char*)arg + i*size);
603 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
606 for(i=0; i<count; i++){
607 int r= func(c, arg, i, 0);
613 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
614 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
619 void avcodec_get_frame_defaults(AVFrame *pic){
620 memset(pic, 0, sizeof(AVFrame));
622 pic->pts= AV_NOPTS_VALUE;
624 pic->sample_aspect_ratio = (AVRational){0, 1};
625 pic->format = -1; /* unknown */
628 AVFrame *avcodec_alloc_frame(void){
629 AVFrame *pic= av_malloc(sizeof(AVFrame));
631 if(pic==NULL) return NULL;
633 avcodec_get_frame_defaults(pic);
638 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
641 AVDictionary *tmp = NULL;
643 if (avcodec_is_open(avctx))
646 if ((!codec && !avctx->codec)) {
647 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
648 return AVERROR(EINVAL);
650 if ((codec && avctx->codec && codec != avctx->codec)) {
651 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
652 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
653 return AVERROR(EINVAL);
656 codec = avctx->codec;
658 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
659 return AVERROR(EINVAL);
662 av_dict_copy(&tmp, *options, 0);
664 /* If there is a user-supplied mutex locking routine, call it. */
666 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
670 entangled_thread_counter++;
671 if(entangled_thread_counter != 1){
672 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
677 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
678 if (!avctx->internal) {
679 ret = AVERROR(ENOMEM);
683 if (codec->priv_data_size > 0) {
684 if(!avctx->priv_data){
685 avctx->priv_data = av_mallocz(codec->priv_data_size);
686 if (!avctx->priv_data) {
687 ret = AVERROR(ENOMEM);
690 if (codec->priv_class) {
691 *(AVClass**)avctx->priv_data= codec->priv_class;
692 av_opt_set_defaults(avctx->priv_data);
695 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
698 avctx->priv_data = NULL;
700 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
703 if(avctx->coded_width && avctx->coded_height)
704 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
705 else if(avctx->width && avctx->height)
706 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
708 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
709 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
710 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
711 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
712 avcodec_set_dimensions(avctx, 0, 0);
715 /* if the decoder init function was already called previously,
716 free the already allocated subtitle_header before overwriting it */
717 if (codec_is_decoder(codec))
718 av_freep(&avctx->subtitle_header);
720 #define SANE_NB_CHANNELS 128U
721 if (avctx->channels > SANE_NB_CHANNELS) {
722 ret = AVERROR(EINVAL);
726 avctx->codec = codec;
727 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
728 avctx->codec_id == CODEC_ID_NONE) {
729 avctx->codec_type = codec->type;
730 avctx->codec_id = codec->id;
732 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
733 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
734 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
735 ret = AVERROR(EINVAL);
738 avctx->frame_number = 0;
740 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
741 (!avctx->time_base.num || !avctx->time_base.den)) {
742 avctx->time_base.num = 1;
743 avctx->time_base.den = avctx->sample_rate;
746 if (HAVE_THREADS && !avctx->thread_opaque) {
747 ret = ff_thread_init(avctx);
752 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
753 avctx->thread_count = 1;
755 if (avctx->codec->max_lowres < avctx->lowres) {
756 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
757 avctx->codec->max_lowres);
758 ret = AVERROR(EINVAL);
761 if (codec_is_encoder(avctx->codec)) {
763 if (avctx->codec->sample_fmts) {
764 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
765 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
767 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
768 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
769 ret = AVERROR(EINVAL);
773 if (avctx->codec->supported_samplerates) {
774 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
775 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
777 if (avctx->codec->supported_samplerates[i] == 0) {
778 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
779 ret = AVERROR(EINVAL);
783 if (avctx->codec->channel_layouts) {
784 if (!avctx->channel_layout) {
785 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
787 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
788 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
790 if (avctx->codec->channel_layouts[i] == 0) {
791 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
792 ret = AVERROR(EINVAL);
797 if (avctx->channel_layout && avctx->channels) {
798 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
799 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
800 ret = AVERROR(EINVAL);
803 } else if (avctx->channel_layout) {
804 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
808 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
809 ret = avctx->codec->init(avctx);
815 entangled_thread_counter--;
817 /* Release any user-supplied mutex. */
819 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
822 av_dict_free(options);
829 av_freep(&avctx->priv_data);
830 av_freep(&avctx->internal);
835 int ff_alloc_packet(AVPacket *avpkt, int size)
837 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
838 return AVERROR(EINVAL);
843 if (avpkt->size < size)
844 return AVERROR(EINVAL);
846 pkt_data = avpkt->data;
847 av_init_packet(avpkt);
848 avpkt->data = pkt_data;
852 return av_new_packet(avpkt, size);
856 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
858 const AVFrame *frame,
862 int user_packet = !!avpkt->data;
865 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
866 av_init_packet(avpkt);
871 /* check for valid frame size */
873 nb_samples = frame->nb_samples;
874 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
875 if (nb_samples > avctx->frame_size)
876 return AVERROR(EINVAL);
877 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
878 if (nb_samples != avctx->frame_size)
879 return AVERROR(EINVAL);
882 nb_samples = avctx->frame_size;
885 if (avctx->codec->encode2) {
887 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
888 if (!ret && *got_packet_ptr &&
889 !(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
890 avpkt->pts = frame->pts;
891 avpkt->duration = av_rescale_q(frame->nb_samples,
892 (AVRational){ 1, avctx->sample_rate },
896 /* for compatibility with encoders not supporting encode2(), we need to
897 allocate a packet buffer if the user has not provided one or check
898 the size otherwise */
900 int buf_size = avpkt->size;
902 if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) {
903 av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0);
904 buf_size = nb_samples * avctx->channels *
905 av_get_bits_per_sample(avctx->codec_id) / 8;
907 /* this is a guess as to the required size.
908 if an encoder needs more than this, it should probably
909 implement encode2() */
910 buf_size = 2 * avctx->frame_size * avctx->channels *
911 av_get_bytes_per_sample(avctx->sample_fmt);
912 buf_size += FF_MIN_BUFFER_SIZE;
915 if ((ret = ff_alloc_packet(avpkt, buf_size)))
918 /* Encoders using AVCodec.encode() that support
919 CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to
920 the smaller size when encoding the last frame.
921 This code can be removed once all encoders supporting
922 CODEC_CAP_SMALL_LAST_FRAME use encode2() */
923 if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) &&
924 nb_samples < avctx->frame_size) {
925 fs_tmp = avctx->frame_size;
926 avctx->frame_size = nb_samples;
929 /* encode the frame */
930 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size,
931 frame ? frame->data[0] : NULL);
934 /* no output. if the packet data was allocated by libavcodec,
937 av_freep(&avpkt->data);
939 if (avctx->coded_frame)
940 avpkt->pts = avctx->coded_frame->pts;
941 /* Set duration for final small packet. This can be removed
942 once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use
945 avpkt->duration = av_rescale_q(avctx->frame_size,
946 (AVRational){ 1, avctx->sample_rate },
951 *got_packet_ptr = (ret > 0);
956 avctx->frame_size = fs_tmp;
959 avctx->frame_number++;
961 /* NOTE: if we add any audio encoders which output non-keyframe packets,
962 this needs to be moved to the encoders, but for now we can do it
963 here to simplify things */
964 avpkt->flags |= AV_PKT_FLAG_KEY;
969 #if FF_API_OLD_DECODE_AUDIO
970 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
971 uint8_t *buf, int buf_size,
972 const short *samples)
977 int ret, samples_size, got_packet;
979 av_init_packet(&pkt);
985 avcodec_get_frame_defaults(frame);
987 if (avctx->frame_size) {
988 frame->nb_samples = avctx->frame_size;
990 /* if frame_size is not set, the number of samples must be
991 calculated from the buffer size */
993 if (!av_get_bits_per_sample(avctx->codec_id)) {
994 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
995 "support this codec\n");
996 return AVERROR(EINVAL);
998 nb_samples = (int64_t)buf_size * 8 /
999 (av_get_bits_per_sample(avctx->codec_id) *
1001 if (nb_samples >= INT_MAX)
1002 return AVERROR(EINVAL);
1003 frame->nb_samples = nb_samples;
1006 /* it is assumed that the samples buffer is large enough based on the
1007 relevant parameters */
1008 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
1010 avctx->sample_fmt, 1);
1011 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
1013 samples, samples_size, 1)))
1016 /* fabricate frame pts from sample count.
1017 this is needed because the avcodec_encode_audio() API does not have
1018 a way for the user to provide pts */
1019 frame->pts = av_rescale_q(avctx->internal->sample_count,
1020 (AVRational){ 1, avctx->sample_rate },
1022 avctx->internal->sample_count += frame->nb_samples;
1028 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1029 if (!ret && got_packet && avctx->coded_frame) {
1030 avctx->coded_frame->pts = pkt.pts;
1031 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1033 /* free any side data since we cannot return it */
1034 if (pkt.side_data_elems > 0) {
1036 for (i = 0; i < pkt.side_data_elems; i++)
1037 av_free(pkt.side_data[i].data);
1038 av_freep(&pkt.side_data);
1039 pkt.side_data_elems = 0;
1042 if (frame && frame->extended_data != frame->data)
1043 av_free(frame->extended_data);
1045 return ret ? ret : pkt.size;
1049 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1050 const AVFrame *pict)
1052 if(buf_size < FF_MIN_BUFFER_SIZE){
1053 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1056 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
1058 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
1059 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
1060 avctx->frame_number++;
1061 emms_c(); //needed to avoid an emms_c() call before every return;
1068 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1069 const AVSubtitle *sub)
1072 if(sub->start_display_time) {
1073 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1076 if(sub->num_rects == 0 || !sub->rects)
1078 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
1079 avctx->frame_number++;
1083 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1086 const uint8_t *data;
1089 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1092 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1093 if (!data || size < 4)
1095 flags = bytestream_get_le32(&data);
1097 if (size < 4) /* Required for any of the changes */
1099 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1100 avctx->channels = bytestream_get_le32(&data);
1103 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1106 avctx->channel_layout = bytestream_get_le64(&data);
1111 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1112 avctx->sample_rate = bytestream_get_le32(&data);
1115 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1118 avctx->width = bytestream_get_le32(&data);
1119 avctx->height = bytestream_get_le32(&data);
1120 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1125 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1126 int *got_picture_ptr,
1131 *got_picture_ptr= 0;
1132 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1136 apply_param_change(avctx, avpkt);
1138 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1139 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1140 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1143 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1145 picture->pkt_dts= avpkt->dts;
1146 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1147 picture->width = avctx->width;
1148 picture->height = avctx->height;
1149 picture->format = avctx->pix_fmt;
1152 emms_c(); //needed to avoid an emms_c() call before every return;
1154 if (*got_picture_ptr)
1155 avctx->frame_number++;
1162 #if FF_API_OLD_DECODE_AUDIO
1163 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1164 int *frame_size_ptr,
1168 int ret, got_frame = 0;
1170 if (avctx->get_buffer != avcodec_default_get_buffer) {
1171 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1172 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1173 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1174 "avcodec_decode_audio4()\n");
1175 avctx->get_buffer = avcodec_default_get_buffer;
1178 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1180 if (ret >= 0 && got_frame) {
1182 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1183 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1185 avctx->sample_fmt, 1);
1186 if (*frame_size_ptr < data_size) {
1187 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1188 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1189 return AVERROR(EINVAL);
1192 memcpy(samples, frame.extended_data[0], plane_size);
1194 if (planar && avctx->channels > 1) {
1195 uint8_t *out = ((uint8_t *)samples) + plane_size;
1196 for (ch = 1; ch < avctx->channels; ch++) {
1197 memcpy(out, frame.extended_data[ch], plane_size);
1201 *frame_size_ptr = data_size;
1203 *frame_size_ptr = 0;
1209 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1220 if (!avpkt->data && avpkt->size) {
1221 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1222 return AVERROR(EINVAL);
1225 apply_param_change(avctx, avpkt);
1227 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1228 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1229 if (ret >= 0 && *got_frame_ptr) {
1230 avctx->frame_number++;
1231 frame->pkt_dts = avpkt->dts;
1232 if (frame->format == AV_SAMPLE_FMT_NONE)
1233 frame->format = avctx->sample_fmt;
1239 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1247 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1249 avctx->frame_number++;
1253 void avsubtitle_free(AVSubtitle *sub)
1257 for (i = 0; i < sub->num_rects; i++)
1259 av_freep(&sub->rects[i]->pict.data[0]);
1260 av_freep(&sub->rects[i]->pict.data[1]);
1261 av_freep(&sub->rects[i]->pict.data[2]);
1262 av_freep(&sub->rects[i]->pict.data[3]);
1263 av_freep(&sub->rects[i]->text);
1264 av_freep(&sub->rects[i]->ass);
1265 av_freep(&sub->rects[i]);
1268 av_freep(&sub->rects);
1270 memset(sub, 0, sizeof(AVSubtitle));
1273 av_cold int avcodec_close(AVCodecContext *avctx)
1275 /* If there is a user-supplied mutex locking routine, call it. */
1276 if (ff_lockmgr_cb) {
1277 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1281 entangled_thread_counter++;
1282 if(entangled_thread_counter != 1){
1283 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1284 entangled_thread_counter--;
1288 if (avcodec_is_open(avctx)) {
1289 if (HAVE_THREADS && avctx->thread_opaque)
1290 ff_thread_free(avctx);
1291 if (avctx->codec && avctx->codec->close)
1292 avctx->codec->close(avctx);
1293 avcodec_default_free_buffers(avctx);
1294 avctx->coded_frame = NULL;
1295 av_freep(&avctx->internal);
1298 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1299 av_opt_free(avctx->priv_data);
1301 av_freep(&avctx->priv_data);
1302 if (codec_is_encoder(avctx->codec))
1303 av_freep(&avctx->extradata);
1304 avctx->codec = NULL;
1305 avctx->active_thread_type = 0;
1306 entangled_thread_counter--;
1308 /* Release any user-supplied mutex. */
1309 if (ff_lockmgr_cb) {
1310 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1315 AVCodec *avcodec_find_encoder(enum CodecID id)
1317 AVCodec *p, *experimental=NULL;
1320 if (codec_is_encoder(p) && p->id == id) {
1321 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1328 return experimental;
1331 AVCodec *avcodec_find_encoder_by_name(const char *name)
1338 if (codec_is_encoder(p) && strcmp(name,p->name) == 0)
1345 AVCodec *avcodec_find_decoder(enum CodecID id)
1350 if (codec_is_decoder(p) && p->id == id)
1357 AVCodec *avcodec_find_decoder_by_name(const char *name)
1364 if (codec_is_decoder(p) && strcmp(name,p->name) == 0)
1371 static int get_bit_rate(AVCodecContext *ctx)
1374 int bits_per_sample;
1376 switch(ctx->codec_type) {
1377 case AVMEDIA_TYPE_VIDEO:
1378 case AVMEDIA_TYPE_DATA:
1379 case AVMEDIA_TYPE_SUBTITLE:
1380 case AVMEDIA_TYPE_ATTACHMENT:
1381 bit_rate = ctx->bit_rate;
1383 case AVMEDIA_TYPE_AUDIO:
1384 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1385 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1394 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1396 int i, len, ret = 0;
1398 for (i = 0; i < 4; i++) {
1399 len = snprintf(buf, buf_size,
1400 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1402 buf_size = buf_size > len ? buf_size - len : 0;
1409 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1411 const char *codec_name;
1412 const char *profile = NULL;
1416 AVRational display_aspect_ratio;
1419 p = avcodec_find_encoder(enc->codec_id);
1421 p = avcodec_find_decoder(enc->codec_id);
1424 codec_name = p->name;
1425 profile = av_get_profile_name(p, enc->profile);
1426 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1427 /* fake mpeg2 transport stream codec (currently not
1429 codec_name = "mpeg2ts";
1430 } else if (enc->codec_name[0] != '\0') {
1431 codec_name = enc->codec_name;
1433 /* output avi tags */
1435 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1436 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1440 switch(enc->codec_type) {
1441 case AVMEDIA_TYPE_VIDEO:
1442 snprintf(buf, buf_size,
1444 codec_name, enc->mb_decision ? " (hq)" : "");
1446 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1448 if (enc->pix_fmt != PIX_FMT_NONE) {
1449 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1451 av_get_pix_fmt_name(enc->pix_fmt));
1454 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1456 enc->width, enc->height);
1457 if (enc->sample_aspect_ratio.num) {
1458 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1459 enc->width*enc->sample_aspect_ratio.num,
1460 enc->height*enc->sample_aspect_ratio.den,
1462 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1463 " [PAR %d:%d DAR %d:%d]",
1464 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1465 display_aspect_ratio.num, display_aspect_ratio.den);
1467 if(av_log_get_level() >= AV_LOG_DEBUG){
1468 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1469 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1471 enc->time_base.num/g, enc->time_base.den/g);
1475 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1476 ", q=%d-%d", enc->qmin, enc->qmax);
1479 case AVMEDIA_TYPE_AUDIO:
1480 snprintf(buf, buf_size,
1484 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1486 if (enc->sample_rate) {
1487 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1488 ", %d Hz", enc->sample_rate);
1490 av_strlcat(buf, ", ", buf_size);
1491 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1492 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1493 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1494 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1497 case AVMEDIA_TYPE_DATA:
1498 snprintf(buf, buf_size, "Data: %s", codec_name);
1500 case AVMEDIA_TYPE_SUBTITLE:
1501 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1503 case AVMEDIA_TYPE_ATTACHMENT:
1504 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1507 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1511 if (enc->flags & CODEC_FLAG_PASS1)
1512 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1514 if (enc->flags & CODEC_FLAG_PASS2)
1515 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1518 bitrate = get_bit_rate(enc);
1520 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1521 ", %d kb/s", bitrate / 1000);
1525 const char *av_get_profile_name(const AVCodec *codec, int profile)
1528 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1531 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1532 if (p->profile == profile)
1538 unsigned avcodec_version( void )
1540 return LIBAVCODEC_VERSION_INT;
1543 const char *avcodec_configuration(void)
1545 return LIBAV_CONFIGURATION;
1548 const char *avcodec_license(void)
1550 #define LICENSE_PREFIX "libavcodec license: "
1551 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1554 void avcodec_flush_buffers(AVCodecContext *avctx)
1556 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1557 ff_thread_flush(avctx);
1558 else if(avctx->codec->flush)
1559 avctx->codec->flush(avctx);
1562 static void video_free_buffers(AVCodecContext *s)
1564 AVCodecInternal *avci = s->internal;
1570 if (avci->buffer_count)
1571 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1572 avci->buffer_count);
1573 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1574 InternalBuffer *buf = &avci->buffer[i];
1576 av_freep(&buf->base[j]);
1580 av_freep(&avci->buffer);
1582 avci->buffer_count=0;
1585 static void audio_free_buffers(AVCodecContext *avctx)
1587 AVCodecInternal *avci = avctx->internal;
1588 InternalBuffer *buf;
1594 if (buf->extended_data) {
1595 av_free(buf->extended_data[0]);
1596 if (buf->extended_data != buf->data)
1597 av_free(buf->extended_data);
1599 av_freep(&avci->buffer);
1602 void avcodec_default_free_buffers(AVCodecContext *avctx)
1604 switch (avctx->codec_type) {
1605 case AVMEDIA_TYPE_VIDEO:
1606 video_free_buffers(avctx);
1608 case AVMEDIA_TYPE_AUDIO:
1609 audio_free_buffers(avctx);
1616 int av_get_bits_per_sample(enum CodecID codec_id){
1618 case CODEC_ID_ADPCM_SBPRO_2:
1620 case CODEC_ID_ADPCM_SBPRO_3:
1622 case CODEC_ID_ADPCM_SBPRO_4:
1623 case CODEC_ID_ADPCM_CT:
1624 case CODEC_ID_ADPCM_IMA_APC:
1625 case CODEC_ID_ADPCM_IMA_WAV:
1626 case CODEC_ID_ADPCM_IMA_QT:
1627 case CODEC_ID_ADPCM_SWF:
1628 case CODEC_ID_ADPCM_MS:
1629 case CODEC_ID_ADPCM_YAMAHA:
1630 case CODEC_ID_ADPCM_G722:
1632 case CODEC_ID_PCM_ALAW:
1633 case CODEC_ID_PCM_MULAW:
1634 case CODEC_ID_PCM_S8:
1635 case CODEC_ID_PCM_U8:
1636 case CODEC_ID_PCM_ZORK:
1638 case CODEC_ID_PCM_S16BE:
1639 case CODEC_ID_PCM_S16LE:
1640 case CODEC_ID_PCM_S16LE_PLANAR:
1641 case CODEC_ID_PCM_U16BE:
1642 case CODEC_ID_PCM_U16LE:
1644 case CODEC_ID_PCM_S24DAUD:
1645 case CODEC_ID_PCM_S24BE:
1646 case CODEC_ID_PCM_S24LE:
1647 case CODEC_ID_PCM_U24BE:
1648 case CODEC_ID_PCM_U24LE:
1650 case CODEC_ID_PCM_S32BE:
1651 case CODEC_ID_PCM_S32LE:
1652 case CODEC_ID_PCM_U32BE:
1653 case CODEC_ID_PCM_U32LE:
1654 case CODEC_ID_PCM_F32BE:
1655 case CODEC_ID_PCM_F32LE:
1657 case CODEC_ID_PCM_F64BE:
1658 case CODEC_ID_PCM_F64LE:
1666 int ff_thread_init(AVCodecContext *s){
1671 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1685 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1687 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1691 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1693 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1694 "version to the newest one from Git. If the problem still "
1695 "occurs, it means that your file has a feature which has not "
1696 "been implemented.\n", feature);
1698 av_log_ask_for_sample(avc, NULL);
1701 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1703 va_list argument_list;
1705 va_start(argument_list, msg);
1708 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1709 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1710 "of this file to ftp://upload.libav.org/incoming/ "
1711 "and contact the libav-devel mailing list.\n");
1713 va_end(argument_list);
1716 static AVHWAccel *first_hwaccel = NULL;
1718 void av_register_hwaccel(AVHWAccel *hwaccel)
1720 AVHWAccel **p = &first_hwaccel;
1724 hwaccel->next = NULL;
1727 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1729 return hwaccel ? hwaccel->next : first_hwaccel;
1732 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1734 AVHWAccel *hwaccel=NULL;
1736 while((hwaccel= av_hwaccel_next(hwaccel))){
1737 if ( hwaccel->id == codec_id
1738 && hwaccel->pix_fmt == pix_fmt)
1744 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1746 if (ff_lockmgr_cb) {
1747 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1749 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1755 if (ff_lockmgr_cb) {
1756 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1758 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1764 int avpriv_lock_avformat(void)
1766 if (ff_lockmgr_cb) {
1767 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1773 int avpriv_unlock_avformat(void)
1775 if (ff_lockmgr_cb) {
1776 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1782 unsigned int avpriv_toupper4(unsigned int x)
1784 return toupper( x &0xFF)
1785 + (toupper((x>>8 )&0xFF)<<8 )
1786 + (toupper((x>>16)&0xFF)<<16)
1787 + (toupper((x>>24)&0xFF)<<24);
1792 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1795 return avctx->get_buffer(avctx, f);
1798 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1800 f->owner->release_buffer(f->owner, f);
1803 void ff_thread_finish_setup(AVCodecContext *avctx)
1807 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1811 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1817 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1819 if (codec_id <= CODEC_ID_NONE)
1820 return AVMEDIA_TYPE_UNKNOWN;
1821 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1822 return AVMEDIA_TYPE_VIDEO;
1823 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1824 return AVMEDIA_TYPE_AUDIO;
1825 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1826 return AVMEDIA_TYPE_SUBTITLE;
1828 return AVMEDIA_TYPE_UNKNOWN;
1831 int avcodec_is_open(AVCodecContext *s)
1833 return !!s->internal;