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 /* encoder management */
84 static AVCodec *first_avcodec = NULL;
86 AVCodec *av_codec_next(AVCodec *c){
88 else return first_avcodec;
91 static void avcodec_init(void)
93 static int initialized = 0;
99 dsputil_static_init();
102 static av_always_inline int codec_is_encoder(AVCodec *codec)
104 return codec && (codec->encode || codec->encode2);
107 static av_always_inline int codec_is_decoder(AVCodec *codec)
109 return codec && codec->decode;
112 void avcodec_register(AVCodec *codec)
117 while (*p != NULL) p = &(*p)->next;
121 if (codec->init_static_data)
122 codec->init_static_data(codec);
125 unsigned avcodec_get_edge_width(void)
130 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
131 s->coded_width = width;
132 s->coded_height= height;
133 s->width = -((-width )>>s->lowres);
134 s->height= -((-height)>>s->lowres);
137 #define INTERNAL_BUFFER_SIZE (32+1)
139 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
140 int linesize_align[AV_NUM_DATA_POINTERS])
147 case PIX_FMT_YUV420P:
148 case PIX_FMT_YUYV422:
149 case PIX_FMT_UYVY422:
150 case PIX_FMT_YUV422P:
151 case PIX_FMT_YUV440P:
152 case PIX_FMT_YUV444P:
155 case PIX_FMT_GRAY16BE:
156 case PIX_FMT_GRAY16LE:
157 case PIX_FMT_YUVJ420P:
158 case PIX_FMT_YUVJ422P:
159 case PIX_FMT_YUVJ440P:
160 case PIX_FMT_YUVJ444P:
161 case PIX_FMT_YUVA420P:
162 case PIX_FMT_YUV420P9LE:
163 case PIX_FMT_YUV420P9BE:
164 case PIX_FMT_YUV420P10LE:
165 case PIX_FMT_YUV420P10BE:
166 case PIX_FMT_YUV422P9LE:
167 case PIX_FMT_YUV422P9BE:
168 case PIX_FMT_YUV422P10LE:
169 case PIX_FMT_YUV422P10BE:
170 case PIX_FMT_YUV444P9LE:
171 case PIX_FMT_YUV444P9BE:
172 case PIX_FMT_YUV444P10LE:
173 case PIX_FMT_YUV444P10BE:
174 case PIX_FMT_GBRP9LE:
175 case PIX_FMT_GBRP9BE:
176 case PIX_FMT_GBRP10LE:
177 case PIX_FMT_GBRP10BE:
178 w_align = 16; //FIXME assume 16 pixel per macroblock
179 h_align = 16 * 2; // interlaced needs 2 macroblocks height
181 case PIX_FMT_YUV411P:
182 case PIX_FMT_UYYVYY411:
186 case PIX_FMT_YUV410P:
187 if(s->codec_id == CODEC_ID_SVQ1){
192 if(s->codec_id == CODEC_ID_RPZA){
199 if(s->codec_id == CODEC_ID_SMC){
205 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
216 *width = FFALIGN(*width , w_align);
217 *height= FFALIGN(*height, h_align);
218 if(s->codec_id == CODEC_ID_H264 || s->lowres)
219 *height+=2; // some of the optimized chroma MC reads one line too much
220 // which is also done in mpeg decoders with lowres > 0
222 for (i = 0; i < 4; i++)
223 linesize_align[i] = STRIDE_ALIGN;
224 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
225 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
226 //picture size unneccessarily in some cases. The solution here is not
227 //pretty and better ideas are welcome!
229 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
230 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
231 s->codec_id == CODEC_ID_VP6A) {
232 for (i = 0; i < 4; i++)
233 linesize_align[i] = 16;
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, 32)))
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 if (avctx->debug & FF_DEBUG_BUFFERS)
360 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, "
361 "internal audio buffer used\n", frame);
366 static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
372 AVCodecInternal *avci = s->internal;
374 if(pic->data[0]!=NULL) {
375 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
378 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) {
379 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n");
383 if(av_image_check_size(w, h, 0, s))
387 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) *
388 sizeof(InternalBuffer));
391 buf = &avci->buffer[avci->buffer_count];
393 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
394 if(s->active_thread_type&FF_THREAD_FRAME) {
395 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
399 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
400 av_freep(&buf->base[i]);
406 int h_chroma_shift, v_chroma_shift;
411 int stride_align[AV_NUM_DATA_POINTERS];
412 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
414 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
416 avcodec_align_dimensions2(s, &w, &h, stride_align);
418 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
424 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
425 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
426 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
427 // increase alignment of w for next try (rhs gives the lowest bit set in w)
432 unaligned |= picture.linesize[i] % stride_align[i];
436 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
440 for (i=0; i<3 && picture.data[i+1]; i++)
441 size[i] = picture.data[i+1] - picture.data[i];
442 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
444 memset(buf->base, 0, sizeof(buf->base));
445 memset(buf->data, 0, sizeof(buf->data));
447 for(i=0; i<4 && size[i]; i++){
448 const int h_shift= i==0 ? 0 : h_chroma_shift;
449 const int v_shift= i==0 ? 0 : v_chroma_shift;
451 buf->linesize[i]= picture.linesize[i];
453 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
454 if(buf->base[i]==NULL) return -1;
455 memset(buf->base[i], 128, size[i]);
457 // no edge if EDGE EMU or not planar YUV
458 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
459 buf->data[i] = buf->base[i];
461 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
463 for (; i < AV_NUM_DATA_POINTERS; i++) {
464 buf->base[i] = buf->data[i] = NULL;
465 buf->linesize[i] = 0;
467 if(size[1] && !size[2])
468 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
469 buf->width = s->width;
470 buf->height = s->height;
471 buf->pix_fmt= s->pix_fmt;
473 pic->type= FF_BUFFER_TYPE_INTERNAL;
475 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
476 pic->base[i]= buf->base[i];
477 pic->data[i]= buf->data[i];
478 pic->linesize[i]= buf->linesize[i];
480 pic->extended_data = pic->data;
481 avci->buffer_count++;
483 if(s->pkt) pic->pkt_pts= s->pkt->pts;
484 else pic->pkt_pts= AV_NOPTS_VALUE;
485 pic->reordered_opaque= s->reordered_opaque;
487 if(s->debug&FF_DEBUG_BUFFERS)
488 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d "
489 "buffers used\n", pic, avci->buffer_count);
494 int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
496 switch (avctx->codec_type) {
497 case AVMEDIA_TYPE_VIDEO:
498 return video_get_buffer(avctx, frame);
499 case AVMEDIA_TYPE_AUDIO:
500 return audio_get_buffer(avctx, frame);
506 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
508 InternalBuffer *buf, *last;
509 AVCodecInternal *avci = s->internal;
511 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
513 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
514 assert(avci->buffer_count);
517 buf = NULL; /* avoids warning */
518 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize
519 buf = &avci->buffer[i];
520 if (buf->data[0] == pic->data[0])
523 assert(i < avci->buffer_count);
524 avci->buffer_count--;
525 last = &avci->buffer[avci->buffer_count];
528 FFSWAP(InternalBuffer, *buf, *last);
531 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) {
533 // pic->base[i]=NULL;
535 //printf("R%X\n", pic->opaque);
537 if(s->debug&FF_DEBUG_BUFFERS)
538 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d "
539 "buffers used\n", pic, avci->buffer_count);
542 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
546 assert(s->codec_type == AVMEDIA_TYPE_VIDEO);
548 /* If no picture return a new buffer */
549 if(pic->data[0] == NULL) {
550 /* We will copy from buffer, so must be readable */
551 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
552 return s->get_buffer(s, pic);
555 /* If internal buffer type return the same buffer */
556 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
557 if(s->pkt) pic->pkt_pts= s->pkt->pts;
558 else pic->pkt_pts= AV_NOPTS_VALUE;
559 pic->reordered_opaque= s->reordered_opaque;
564 * Not internal type and reget_buffer not overridden, emulate cr buffer
567 for(i = 0; i < AV_NUM_DATA_POINTERS; i++)
568 pic->data[i] = pic->base[i] = NULL;
570 /* Allocate new frame */
571 if (s->get_buffer(s, pic))
573 /* Copy image data from old buffer to new buffer */
574 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
576 s->release_buffer(s, &temp_pic); // Release old frame
580 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
583 for(i=0; i<count; i++){
584 int r= func(c, (char*)arg + i*size);
590 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
593 for(i=0; i<count; i++){
594 int r= func(c, arg, i, 0);
600 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
601 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
606 void avcodec_get_frame_defaults(AVFrame *pic){
607 memset(pic, 0, sizeof(AVFrame));
609 pic->pts= AV_NOPTS_VALUE;
611 pic->sample_aspect_ratio = (AVRational){0, 1};
612 pic->format = -1; /* unknown */
615 AVFrame *avcodec_alloc_frame(void){
616 AVFrame *pic= av_malloc(sizeof(AVFrame));
618 if(pic==NULL) return NULL;
620 avcodec_get_frame_defaults(pic);
625 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options)
628 AVDictionary *tmp = NULL;
630 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
631 return AVERROR(EINVAL);
634 av_dict_copy(&tmp, *options, 0);
636 /* If there is a user-supplied mutex locking routine, call it. */
638 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
642 entangled_thread_counter++;
643 if(entangled_thread_counter != 1){
644 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
649 if(avctx->codec || !codec) {
650 ret = AVERROR(EINVAL);
654 avctx->internal = av_mallocz(sizeof(AVCodecInternal));
655 if (!avctx->internal) {
656 ret = AVERROR(ENOMEM);
660 if (codec->priv_data_size > 0) {
661 if(!avctx->priv_data){
662 avctx->priv_data = av_mallocz(codec->priv_data_size);
663 if (!avctx->priv_data) {
664 ret = AVERROR(ENOMEM);
667 if (codec->priv_class) {
668 *(AVClass**)avctx->priv_data= codec->priv_class;
669 av_opt_set_defaults(avctx->priv_data);
672 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
675 avctx->priv_data = NULL;
677 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
680 if(avctx->coded_width && avctx->coded_height)
681 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
682 else if(avctx->width && avctx->height)
683 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
685 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
686 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
687 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
688 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
689 avcodec_set_dimensions(avctx, 0, 0);
692 /* if the decoder init function was already called previously,
693 free the already allocated subtitle_header before overwriting it */
694 if (codec_is_decoder(codec))
695 av_freep(&avctx->subtitle_header);
697 #define SANE_NB_CHANNELS 128U
698 if (avctx->channels > SANE_NB_CHANNELS) {
699 ret = AVERROR(EINVAL);
703 avctx->codec = codec;
704 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
705 avctx->codec_id == CODEC_ID_NONE) {
706 avctx->codec_type = codec->type;
707 avctx->codec_id = codec->id;
709 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
710 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
711 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
712 ret = AVERROR(EINVAL);
715 avctx->frame_number = 0;
717 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
718 (!avctx->time_base.num || !avctx->time_base.den)) {
719 avctx->time_base.num = 1;
720 avctx->time_base.den = avctx->sample_rate;
723 if (HAVE_THREADS && !avctx->thread_opaque) {
724 ret = ff_thread_init(avctx);
729 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
730 avctx->thread_count = 1;
732 if (avctx->codec->max_lowres < avctx->lowres) {
733 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
734 avctx->codec->max_lowres);
735 ret = AVERROR(EINVAL);
738 if (codec_is_encoder(avctx->codec)) {
740 if (avctx->codec->sample_fmts) {
741 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
742 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
744 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
745 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
746 ret = AVERROR(EINVAL);
750 if (avctx->codec->supported_samplerates) {
751 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
752 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
754 if (avctx->codec->supported_samplerates[i] == 0) {
755 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
756 ret = AVERROR(EINVAL);
760 if (avctx->codec->channel_layouts) {
761 if (!avctx->channel_layout) {
762 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
764 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
765 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
767 if (avctx->codec->channel_layouts[i] == 0) {
768 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
769 ret = AVERROR(EINVAL);
774 if (avctx->channel_layout && avctx->channels) {
775 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
776 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
777 ret = AVERROR(EINVAL);
780 } else if (avctx->channel_layout) {
781 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
785 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
786 ret = avctx->codec->init(avctx);
792 entangled_thread_counter--;
794 /* Release any user-supplied mutex. */
796 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
799 av_dict_free(options);
806 av_freep(&avctx->priv_data);
807 av_freep(&avctx->internal);
812 int ff_alloc_packet(AVPacket *avpkt, int size)
814 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
815 return AVERROR(EINVAL);
821 if (avpkt->size < size)
822 return AVERROR(EINVAL);
824 pkt_data = avpkt->data;
825 pkt_size = avpkt->size;
826 av_init_packet(avpkt);
827 avpkt->data = pkt_data;
828 avpkt->size = pkt_size;
831 return av_new_packet(avpkt, size);
835 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
837 const AVFrame *frame,
841 int user_packet = !!avpkt->data;
844 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
845 av_init_packet(avpkt);
850 /* check for valid frame size */
852 nb_samples = frame->nb_samples;
853 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
854 if (nb_samples > avctx->frame_size)
855 return AVERROR(EINVAL);
856 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
857 if (nb_samples != avctx->frame_size)
858 return AVERROR(EINVAL);
861 nb_samples = avctx->frame_size;
864 if (avctx->codec->encode2) {
866 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
867 if (!ret && *got_packet_ptr &&
868 !(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
869 avpkt->pts = frame->pts;
870 avpkt->duration = av_rescale_q(frame->nb_samples,
871 (AVRational){ 1, avctx->sample_rate },
875 /* for compatibility with encoders not supporting encode2(), we need to
876 allocate a packet buffer if the user has not provided one or check
877 the size otherwise */
879 int buf_size = avpkt->size;
881 if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) {
882 av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0);
883 buf_size = nb_samples * avctx->channels *
884 av_get_bits_per_sample(avctx->codec_id) / 8;
886 /* this is a guess as to the required size.
887 if an encoder needs more than this, it should probably
888 implement encode2() */
889 buf_size = 2 * avctx->frame_size * avctx->channels *
890 av_get_bytes_per_sample(avctx->sample_fmt);
891 buf_size += FF_MIN_BUFFER_SIZE;
894 if ((ret = ff_alloc_packet(avpkt, buf_size)))
897 /* Encoders using AVCodec.encode() that support
898 CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to
899 the smaller size when encoding the last frame.
900 This code can be removed once all encoders supporting
901 CODEC_CAP_SMALL_LAST_FRAME use encode2() */
902 if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) &&
903 nb_samples < avctx->frame_size) {
904 fs_tmp = avctx->frame_size;
905 avctx->frame_size = nb_samples;
908 /* encode the frame */
909 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size,
910 frame ? frame->data[0] : NULL);
913 /* no output. if the packet data was allocated by libavcodec,
916 av_freep(&avpkt->data);
918 if (avctx->coded_frame)
919 avpkt->pts = avctx->coded_frame->pts;
920 /* Set duration for final small packet. This can be removed
921 once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use
924 avpkt->duration = av_rescale_q(avctx->frame_size,
925 (AVRational){ 1, avctx->sample_rate },
930 *got_packet_ptr = (ret > 0);
935 avctx->frame_size = fs_tmp;
938 avctx->frame_number++;
940 /* NOTE: if we add any audio encoders which output non-keyframe packets,
941 this needs to be moved to the encoders, but for now we can do it
942 here to simplify things */
943 avpkt->flags |= AV_PKT_FLAG_KEY;
948 #if FF_API_OLD_DECODE_AUDIO
949 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
950 uint8_t *buf, int buf_size,
951 const short *samples)
956 int ret, samples_size, got_packet;
958 av_init_packet(&pkt);
964 avcodec_get_frame_defaults(frame);
966 if (avctx->frame_size) {
967 frame->nb_samples = avctx->frame_size;
969 /* if frame_size is not set, the number of samples must be
970 calculated from the buffer size */
972 if (!av_get_bits_per_sample(avctx->codec_id)) {
973 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
974 "support this codec\n");
975 return AVERROR(EINVAL);
977 nb_samples = (int64_t)buf_size * 8 /
978 (av_get_bits_per_sample(avctx->codec_id) *
980 if (nb_samples >= INT_MAX)
981 return AVERROR(EINVAL);
982 frame->nb_samples = nb_samples;
985 /* it is assumed that the samples buffer is large enough based on the
986 relevant parameters */
987 samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
989 avctx->sample_fmt, 1);
990 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
992 samples, samples_size, 1)))
995 /* fabricate frame pts from sample count.
996 this is needed because the avcodec_encode_audio() API does not have
997 a way for the user to provide pts */
998 frame->pts = av_rescale_q(avctx->internal->sample_count,
999 (AVRational){ 1, avctx->sample_rate },
1001 avctx->internal->sample_count += frame->nb_samples;
1007 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
1008 if (!ret && got_packet && avctx->coded_frame) {
1009 avctx->coded_frame->pts = pkt.pts;
1010 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
1012 /* free any side data since we cannot return it */
1013 if (pkt.side_data_elems > 0) {
1015 for (i = 0; i < pkt.side_data_elems; i++)
1016 av_free(pkt.side_data[i].data);
1017 av_freep(&pkt.side_data);
1018 pkt.side_data_elems = 0;
1021 if (frame && frame->extended_data != frame->data)
1022 av_free(frame->extended_data);
1024 return ret ? ret : pkt.size;
1028 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1029 const AVFrame *pict)
1031 if(buf_size < FF_MIN_BUFFER_SIZE){
1032 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
1035 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
1037 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
1038 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
1039 avctx->frame_number++;
1040 emms_c(); //needed to avoid an emms_c() call before every return;
1047 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1048 const AVSubtitle *sub)
1051 if(sub->start_display_time) {
1052 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1055 if(sub->num_rects == 0 || !sub->rects)
1057 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
1058 avctx->frame_number++;
1062 static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1065 const uint8_t *data;
1068 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE))
1071 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1072 if (!data || size < 4)
1074 flags = bytestream_get_le32(&data);
1076 if (size < 4) /* Required for any of the changes */
1078 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) {
1079 avctx->channels = bytestream_get_le32(&data);
1082 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) {
1085 avctx->channel_layout = bytestream_get_le64(&data);
1090 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) {
1091 avctx->sample_rate = bytestream_get_le32(&data);
1094 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) {
1097 avctx->width = bytestream_get_le32(&data);
1098 avctx->height = bytestream_get_le32(&data);
1099 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
1104 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
1105 int *got_picture_ptr,
1110 *got_picture_ptr= 0;
1111 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1115 apply_param_change(avctx, avpkt);
1117 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
1118 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1119 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1122 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1124 picture->pkt_dts= avpkt->dts;
1125 picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1126 picture->width = avctx->width;
1127 picture->height = avctx->height;
1128 picture->format = avctx->pix_fmt;
1131 emms_c(); //needed to avoid an emms_c() call before every return;
1133 if (*got_picture_ptr)
1134 avctx->frame_number++;
1141 #if FF_API_OLD_DECODE_AUDIO
1142 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
1143 int *frame_size_ptr,
1147 int ret, got_frame = 0;
1149 if (avctx->get_buffer != avcodec_default_get_buffer) {
1150 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
1151 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
1152 av_log(avctx, AV_LOG_ERROR, "Please port your application to "
1153 "avcodec_decode_audio4()\n");
1154 avctx->get_buffer = avcodec_default_get_buffer;
1157 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt);
1159 if (ret >= 0 && got_frame) {
1161 int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
1162 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
1164 avctx->sample_fmt, 1);
1165 if (*frame_size_ptr < data_size) {
1166 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
1167 "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
1168 return AVERROR(EINVAL);
1171 memcpy(samples, frame.extended_data[0], plane_size);
1173 if (planar && avctx->channels > 1) {
1174 uint8_t *out = ((uint8_t *)samples) + plane_size;
1175 for (ch = 1; ch < avctx->channels; ch++) {
1176 memcpy(out, frame.extended_data[ch], plane_size);
1180 *frame_size_ptr = data_size;
1182 *frame_size_ptr = 0;
1188 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
1199 if (!avpkt->data && avpkt->size) {
1200 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1201 return AVERROR(EINVAL);
1204 apply_param_change(avctx, avpkt);
1206 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1207 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1208 if (ret >= 0 && *got_frame_ptr) {
1209 avctx->frame_number++;
1210 frame->pkt_dts = avpkt->dts;
1211 if (frame->format == AV_SAMPLE_FMT_NONE)
1212 frame->format = avctx->sample_fmt;
1218 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
1226 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1228 avctx->frame_number++;
1232 void avsubtitle_free(AVSubtitle *sub)
1236 for (i = 0; i < sub->num_rects; i++)
1238 av_freep(&sub->rects[i]->pict.data[0]);
1239 av_freep(&sub->rects[i]->pict.data[1]);
1240 av_freep(&sub->rects[i]->pict.data[2]);
1241 av_freep(&sub->rects[i]->pict.data[3]);
1242 av_freep(&sub->rects[i]->text);
1243 av_freep(&sub->rects[i]->ass);
1244 av_freep(&sub->rects[i]);
1247 av_freep(&sub->rects);
1249 memset(sub, 0, sizeof(AVSubtitle));
1252 av_cold int avcodec_close(AVCodecContext *avctx)
1254 /* If there is a user-supplied mutex locking routine, call it. */
1255 if (ff_lockmgr_cb) {
1256 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
1260 entangled_thread_counter++;
1261 if(entangled_thread_counter != 1){
1262 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1263 entangled_thread_counter--;
1267 if (HAVE_THREADS && avctx->thread_opaque)
1268 ff_thread_free(avctx);
1269 if (avctx->codec && avctx->codec->close)
1270 avctx->codec->close(avctx);
1271 avcodec_default_free_buffers(avctx);
1272 avctx->coded_frame = NULL;
1273 av_freep(&avctx->internal);
1274 if (avctx->codec && avctx->codec->priv_class)
1275 av_opt_free(avctx->priv_data);
1277 av_freep(&avctx->priv_data);
1278 if (codec_is_encoder(avctx->codec))
1279 av_freep(&avctx->extradata);
1280 avctx->codec = NULL;
1281 avctx->active_thread_type = 0;
1282 entangled_thread_counter--;
1284 /* Release any user-supplied mutex. */
1285 if (ff_lockmgr_cb) {
1286 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1291 AVCodec *avcodec_find_encoder(enum CodecID id)
1293 AVCodec *p, *experimental=NULL;
1296 if (codec_is_encoder(p) && p->id == id) {
1297 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1304 return experimental;
1307 AVCodec *avcodec_find_encoder_by_name(const char *name)
1314 if (codec_is_encoder(p) && strcmp(name,p->name) == 0)
1321 AVCodec *avcodec_find_decoder(enum CodecID id)
1326 if (codec_is_decoder(p) && p->id == id)
1333 AVCodec *avcodec_find_decoder_by_name(const char *name)
1340 if (codec_is_decoder(p) && strcmp(name,p->name) == 0)
1347 static int get_bit_rate(AVCodecContext *ctx)
1350 int bits_per_sample;
1352 switch(ctx->codec_type) {
1353 case AVMEDIA_TYPE_VIDEO:
1354 case AVMEDIA_TYPE_DATA:
1355 case AVMEDIA_TYPE_SUBTITLE:
1356 case AVMEDIA_TYPE_ATTACHMENT:
1357 bit_rate = ctx->bit_rate;
1359 case AVMEDIA_TYPE_AUDIO:
1360 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1361 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1370 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1372 int i, len, ret = 0;
1374 for (i = 0; i < 4; i++) {
1375 len = snprintf(buf, buf_size,
1376 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
1378 buf_size = buf_size > len ? buf_size - len : 0;
1385 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1387 const char *codec_name;
1388 const char *profile = NULL;
1392 AVRational display_aspect_ratio;
1395 p = avcodec_find_encoder(enc->codec_id);
1397 p = avcodec_find_decoder(enc->codec_id);
1400 codec_name = p->name;
1401 profile = av_get_profile_name(p, enc->profile);
1402 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
1403 /* fake mpeg2 transport stream codec (currently not
1405 codec_name = "mpeg2ts";
1406 } else if (enc->codec_name[0] != '\0') {
1407 codec_name = enc->codec_name;
1409 /* output avi tags */
1411 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1412 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1416 switch(enc->codec_type) {
1417 case AVMEDIA_TYPE_VIDEO:
1418 snprintf(buf, buf_size,
1420 codec_name, enc->mb_decision ? " (hq)" : "");
1422 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1424 if (enc->pix_fmt != PIX_FMT_NONE) {
1425 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1427 av_get_pix_fmt_name(enc->pix_fmt));
1430 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1432 enc->width, enc->height);
1433 if (enc->sample_aspect_ratio.num) {
1434 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1435 enc->width*enc->sample_aspect_ratio.num,
1436 enc->height*enc->sample_aspect_ratio.den,
1438 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1439 " [PAR %d:%d DAR %d:%d]",
1440 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1441 display_aspect_ratio.num, display_aspect_ratio.den);
1443 if(av_log_get_level() >= AV_LOG_DEBUG){
1444 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1445 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1447 enc->time_base.num/g, enc->time_base.den/g);
1451 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1452 ", q=%d-%d", enc->qmin, enc->qmax);
1455 case AVMEDIA_TYPE_AUDIO:
1456 snprintf(buf, buf_size,
1460 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1462 if (enc->sample_rate) {
1463 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1464 ", %d Hz", enc->sample_rate);
1466 av_strlcat(buf, ", ", buf_size);
1467 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1468 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1469 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1470 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1473 case AVMEDIA_TYPE_DATA:
1474 snprintf(buf, buf_size, "Data: %s", codec_name);
1476 case AVMEDIA_TYPE_SUBTITLE:
1477 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1479 case AVMEDIA_TYPE_ATTACHMENT:
1480 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1483 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1487 if (enc->flags & CODEC_FLAG_PASS1)
1488 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1490 if (enc->flags & CODEC_FLAG_PASS2)
1491 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1494 bitrate = get_bit_rate(enc);
1496 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1497 ", %d kb/s", bitrate / 1000);
1501 const char *av_get_profile_name(const AVCodec *codec, int profile)
1504 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1507 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1508 if (p->profile == profile)
1514 unsigned avcodec_version( void )
1516 return LIBAVCODEC_VERSION_INT;
1519 const char *avcodec_configuration(void)
1521 return LIBAV_CONFIGURATION;
1524 const char *avcodec_license(void)
1526 #define LICENSE_PREFIX "libavcodec license: "
1527 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1530 void avcodec_flush_buffers(AVCodecContext *avctx)
1532 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1533 ff_thread_flush(avctx);
1534 else if(avctx->codec->flush)
1535 avctx->codec->flush(avctx);
1538 static void video_free_buffers(AVCodecContext *s)
1540 AVCodecInternal *avci = s->internal;
1546 if (avci->buffer_count)
1547 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n",
1548 avci->buffer_count);
1549 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1550 InternalBuffer *buf = &avci->buffer[i];
1552 av_freep(&buf->base[j]);
1556 av_freep(&avci->buffer);
1558 avci->buffer_count=0;
1561 static void audio_free_buffers(AVCodecContext *avctx)
1563 AVCodecInternal *avci = avctx->internal;
1564 InternalBuffer *buf;
1570 if (buf->extended_data) {
1571 av_free(buf->extended_data[0]);
1572 if (buf->extended_data != buf->data)
1573 av_free(buf->extended_data);
1575 av_freep(&avci->buffer);
1578 void avcodec_default_free_buffers(AVCodecContext *avctx)
1580 switch (avctx->codec_type) {
1581 case AVMEDIA_TYPE_VIDEO:
1582 video_free_buffers(avctx);
1584 case AVMEDIA_TYPE_AUDIO:
1585 audio_free_buffers(avctx);
1592 int av_get_bits_per_sample(enum CodecID codec_id){
1594 case CODEC_ID_ADPCM_SBPRO_2:
1596 case CODEC_ID_ADPCM_SBPRO_3:
1598 case CODEC_ID_ADPCM_SBPRO_4:
1599 case CODEC_ID_ADPCM_CT:
1600 case CODEC_ID_ADPCM_IMA_APC:
1601 case CODEC_ID_ADPCM_IMA_WAV:
1602 case CODEC_ID_ADPCM_IMA_QT:
1603 case CODEC_ID_ADPCM_SWF:
1604 case CODEC_ID_ADPCM_MS:
1605 case CODEC_ID_ADPCM_YAMAHA:
1606 case CODEC_ID_ADPCM_G722:
1608 case CODEC_ID_PCM_ALAW:
1609 case CODEC_ID_PCM_MULAW:
1610 case CODEC_ID_PCM_S8:
1611 case CODEC_ID_PCM_U8:
1612 case CODEC_ID_PCM_ZORK:
1614 case CODEC_ID_PCM_S16BE:
1615 case CODEC_ID_PCM_S16LE:
1616 case CODEC_ID_PCM_S16LE_PLANAR:
1617 case CODEC_ID_PCM_U16BE:
1618 case CODEC_ID_PCM_U16LE:
1620 case CODEC_ID_PCM_S24DAUD:
1621 case CODEC_ID_PCM_S24BE:
1622 case CODEC_ID_PCM_S24LE:
1623 case CODEC_ID_PCM_U24BE:
1624 case CODEC_ID_PCM_U24LE:
1626 case CODEC_ID_PCM_S32BE:
1627 case CODEC_ID_PCM_S32LE:
1628 case CODEC_ID_PCM_U32BE:
1629 case CODEC_ID_PCM_U32LE:
1630 case CODEC_ID_PCM_F32BE:
1631 case CODEC_ID_PCM_F32LE:
1633 case CODEC_ID_PCM_F64BE:
1634 case CODEC_ID_PCM_F64LE:
1642 int ff_thread_init(AVCodecContext *s){
1647 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1661 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1663 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1667 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1669 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1670 "version to the newest one from Git. If the problem still "
1671 "occurs, it means that your file has a feature which has not "
1672 "been implemented.\n", feature);
1674 av_log_ask_for_sample(avc, NULL);
1677 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1679 va_list argument_list;
1681 va_start(argument_list, msg);
1684 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1685 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1686 "of this file to ftp://upload.libav.org/incoming/ "
1687 "and contact the libav-devel mailing list.\n");
1689 va_end(argument_list);
1692 static AVHWAccel *first_hwaccel = NULL;
1694 void av_register_hwaccel(AVHWAccel *hwaccel)
1696 AVHWAccel **p = &first_hwaccel;
1700 hwaccel->next = NULL;
1703 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1705 return hwaccel ? hwaccel->next : first_hwaccel;
1708 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1710 AVHWAccel *hwaccel=NULL;
1712 while((hwaccel= av_hwaccel_next(hwaccel))){
1713 if ( hwaccel->id == codec_id
1714 && hwaccel->pix_fmt == pix_fmt)
1720 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1722 if (ff_lockmgr_cb) {
1723 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1725 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY))
1731 if (ff_lockmgr_cb) {
1732 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1734 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE))
1740 int avpriv_lock_avformat(void)
1742 if (ff_lockmgr_cb) {
1743 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN))
1749 int avpriv_unlock_avformat(void)
1751 if (ff_lockmgr_cb) {
1752 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE))
1758 unsigned int avpriv_toupper4(unsigned int x)
1760 return toupper( x &0xFF)
1761 + (toupper((x>>8 )&0xFF)<<8 )
1762 + (toupper((x>>16)&0xFF)<<16)
1763 + (toupper((x>>24)&0xFF)<<24);
1768 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1771 return avctx->get_buffer(avctx, f);
1774 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1776 f->owner->release_buffer(f->owner, f);
1779 void ff_thread_finish_setup(AVCodecContext *avctx)
1783 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1787 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1793 enum AVMediaType avcodec_get_type(enum CodecID codec_id)
1795 if (codec_id <= CODEC_ID_NONE)
1796 return AVMEDIA_TYPE_UNKNOWN;
1797 else if (codec_id < CODEC_ID_FIRST_AUDIO)
1798 return AVMEDIA_TYPE_VIDEO;
1799 else if (codec_id < CODEC_ID_FIRST_SUBTITLE)
1800 return AVMEDIA_TYPE_AUDIO;
1801 else if (codec_id < CODEC_ID_FIRST_UNKNOWN)
1802 return AVMEDIA_TYPE_SUBTITLE;
1804 return AVMEDIA_TYPE_UNKNOWN;