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/avstring.h"
29 #include "libavutil/integer.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/audioconvert.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/samplefmt.h"
37 #include "libavutil/opt.h"
38 #include "imgconvert.h"
40 #include "audioconvert.h"
47 static int volatile entangled_thread_counter=0;
48 static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
49 static void *codec_mutex;
51 void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size)
56 min_size= FFMAX(17*min_size/16 + 32, min_size);
58 ptr= av_realloc(ptr, min_size);
59 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
67 void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
72 min_size= FFMAX(17*min_size/16 + 32, min_size);
74 *p = av_malloc(min_size);
75 if (!*p) min_size = 0;
79 /* encoder management */
80 static AVCodec *first_avcodec = NULL;
82 AVCodec *av_codec_next(AVCodec *c){
84 else return first_avcodec;
87 void avcodec_register(AVCodec *codec)
92 while (*p != NULL) p = &(*p)->next;
97 unsigned avcodec_get_edge_width(void)
102 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
103 s->coded_width = width;
104 s->coded_height= height;
105 s->width = -((-width )>>s->lowres);
106 s->height= -((-height)>>s->lowres);
109 typedef struct InternalBuffer{
115 enum PixelFormat pix_fmt;
118 #define INTERNAL_BUFFER_SIZE 32
120 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
125 case PIX_FMT_YUV420P:
126 case PIX_FMT_YUYV422:
127 case PIX_FMT_UYVY422:
128 case PIX_FMT_YUV422P:
129 case PIX_FMT_YUV440P:
130 case PIX_FMT_YUV444P:
132 case PIX_FMT_GRAY16BE:
133 case PIX_FMT_GRAY16LE:
134 case PIX_FMT_YUVJ420P:
135 case PIX_FMT_YUVJ422P:
136 case PIX_FMT_YUVJ440P:
137 case PIX_FMT_YUVJ444P:
138 case PIX_FMT_YUVA420P:
139 case PIX_FMT_YUV420P9LE:
140 case PIX_FMT_YUV420P9BE:
141 case PIX_FMT_YUV420P10LE:
142 case PIX_FMT_YUV420P10BE:
143 case PIX_FMT_YUV422P10LE:
144 case PIX_FMT_YUV422P10BE:
145 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
147 if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP || s->codec_id == CODEC_ID_H264)
148 h_align= 32; // interlaced is rounded up to 2 MBs
150 case PIX_FMT_YUV411P:
151 case PIX_FMT_UYYVYY411:
155 case PIX_FMT_YUV410P:
156 if(s->codec_id == CODEC_ID_SVQ1){
161 if(s->codec_id == CODEC_ID_RPZA){
168 if(s->codec_id == CODEC_ID_SMC){
174 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
185 *width = FFALIGN(*width , w_align);
186 *height= FFALIGN(*height, h_align);
187 if(s->codec_id == CODEC_ID_H264 || s->lowres)
188 *height+=2; // some of the optimized chroma MC reads one line too much
189 // which is also done in mpeg decoders with lowres > 0
194 linesize_align[3] = STRIDE_ALIGN;
195 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
196 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
197 //picture size unneccessarily in some cases. The solution here is not
198 //pretty and better ideas are welcome!
200 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
201 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
202 s->codec_id == CODEC_ID_VP6A) {
205 linesize_align[2] = 16;
210 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
211 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
212 int linesize_align[4];
214 avcodec_align_dimensions2(s, width, height, linesize_align);
215 align = FFMAX(linesize_align[0], linesize_align[3]);
216 linesize_align[1] <<= chroma_shift;
217 linesize_align[2] <<= chroma_shift;
218 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
219 *width=FFALIGN(*width, align);
222 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
229 if(pic->data[0]!=NULL) {
230 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
233 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
234 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
238 if(av_image_check_size(w, h, 0, s))
241 if(s->internal_buffer==NULL){
242 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
245 s->internal_buffer= av_fast_realloc(
247 &s->internal_buffer_size,
248 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
252 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
253 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
256 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
257 if(s->active_thread_type&FF_THREAD_FRAME) {
258 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
263 av_freep(&buf->base[i]);
269 pic->age= *picture_number - buf->last_pic_num;
270 buf->last_pic_num= *picture_number;
272 int h_chroma_shift, v_chroma_shift;
278 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1;
280 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
282 avcodec_align_dimensions2(s, &w, &h, stride_align);
284 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
290 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
291 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
292 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
293 // increase alignment of w for next try (rhs gives the lowest bit set in w)
298 unaligned |= picture.linesize[i] % stride_align[i];
302 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
306 for (i=0; i<3 && picture.data[i+1]; i++)
307 size[i] = picture.data[i+1] - picture.data[i];
308 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
310 buf->last_pic_num= -256*256*256*64;
311 memset(buf->base, 0, sizeof(buf->base));
312 memset(buf->data, 0, sizeof(buf->data));
314 for(i=0; i<4 && size[i]; i++){
315 const int h_shift= i==0 ? 0 : h_chroma_shift;
316 const int v_shift= i==0 ? 0 : v_chroma_shift;
318 buf->linesize[i]= picture.linesize[i];
320 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
321 if(buf->base[i]==NULL) return -1;
322 memset(buf->base[i], 128, size[i]);
324 // no edge if EDGE EMU or not planar YUV
325 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
326 buf->data[i] = buf->base[i];
328 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]);
330 if(size[1] && !size[2])
331 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
332 buf->width = s->width;
333 buf->height = s->height;
334 buf->pix_fmt= s->pix_fmt;
335 pic->age= 256*256*256*64;
337 pic->type= FF_BUFFER_TYPE_INTERNAL;
340 pic->base[i]= buf->base[i];
341 pic->data[i]= buf->data[i];
342 pic->linesize[i]= buf->linesize[i];
344 s->internal_buffer_count++;
346 if(s->pkt) pic->pkt_pts= s->pkt->pts;
347 else pic->pkt_pts= AV_NOPTS_VALUE;
348 pic->reordered_opaque= s->reordered_opaque;
350 if(s->debug&FF_DEBUG_BUFFERS)
351 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
356 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
358 InternalBuffer *buf, *last;
360 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
361 assert(s->internal_buffer_count);
363 buf = NULL; /* avoids warning */
364 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
365 buf= &((InternalBuffer*)s->internal_buffer)[i];
366 if(buf->data[0] == pic->data[0])
369 assert(i < s->internal_buffer_count);
370 s->internal_buffer_count--;
371 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
373 FFSWAP(InternalBuffer, *buf, *last);
377 // pic->base[i]=NULL;
379 //printf("R%X\n", pic->opaque);
381 if(s->debug&FF_DEBUG_BUFFERS)
382 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
385 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
389 /* If no picture return a new buffer */
390 if(pic->data[0] == NULL) {
391 /* We will copy from buffer, so must be readable */
392 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
393 return s->get_buffer(s, pic);
396 /* If internal buffer type return the same buffer */
397 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
398 if(s->pkt) pic->pkt_pts= s->pkt->pts;
399 else pic->pkt_pts= AV_NOPTS_VALUE;
400 pic->reordered_opaque= s->reordered_opaque;
405 * Not internal type and reget_buffer not overridden, emulate cr buffer
408 for(i = 0; i < 4; i++)
409 pic->data[i] = pic->base[i] = NULL;
411 /* Allocate new frame */
412 if (s->get_buffer(s, pic))
414 /* Copy image data from old buffer to new buffer */
415 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
417 s->release_buffer(s, &temp_pic); // Release old frame
421 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
424 for(i=0; i<count; i++){
425 int r= func(c, (char*)arg + i*size);
431 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
434 for(i=0; i<count; i++){
435 int r= func(c, arg, i, 0);
441 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
442 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
447 void avcodec_get_frame_defaults(AVFrame *pic){
448 memset(pic, 0, sizeof(AVFrame));
450 pic->pts= AV_NOPTS_VALUE;
454 AVFrame *avcodec_alloc_frame(void){
455 AVFrame *pic= av_malloc(sizeof(AVFrame));
457 if(pic==NULL) return NULL;
459 avcodec_get_frame_defaults(pic);
464 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
468 /* If there is a user-supplied mutex locking routine, call it. */
470 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
474 entangled_thread_counter++;
475 if(entangled_thread_counter != 1){
476 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
481 if(avctx->codec || !codec) {
482 ret = AVERROR(EINVAL);
486 if (codec->priv_data_size > 0) {
487 if(!avctx->priv_data){
488 avctx->priv_data = av_mallocz(codec->priv_data_size);
489 if (!avctx->priv_data) {
490 ret = AVERROR(ENOMEM);
493 if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
494 *(AVClass**)avctx->priv_data= codec->priv_class;
495 av_opt_set_defaults(avctx->priv_data);
499 avctx->priv_data = NULL;
502 if(avctx->coded_width && avctx->coded_height)
503 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
504 else if(avctx->width && avctx->height)
505 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
507 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
508 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
509 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
510 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
511 avcodec_set_dimensions(avctx, 0, 0);
514 /* if the decoder init function was already called previously,
515 free the already allocated subtitle_header before overwriting it */
517 av_freep(&avctx->subtitle_header);
519 #define SANE_NB_CHANNELS 128U
520 if (avctx->channels > SANE_NB_CHANNELS) {
521 ret = AVERROR(EINVAL);
525 avctx->codec = codec;
526 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
527 avctx->codec_id == CODEC_ID_NONE) {
528 avctx->codec_type = codec->type;
529 avctx->codec_id = codec->id;
531 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
532 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
533 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
534 ret = AVERROR(EINVAL);
537 avctx->frame_number = 0;
539 if (HAVE_THREADS && !avctx->thread_opaque) {
540 ret = ff_thread_init(avctx);
546 if (avctx->codec->max_lowres < avctx->lowres) {
547 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
548 avctx->codec->max_lowres);
549 ret = AVERROR(EINVAL);
552 if (avctx->codec->encode) {
554 if (avctx->codec->sample_fmts) {
555 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++)
556 if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
558 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
559 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
560 ret = AVERROR(EINVAL);
564 if (avctx->codec->supported_samplerates) {
565 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
566 if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
568 if (avctx->codec->supported_samplerates[i] == 0) {
569 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
570 ret = AVERROR(EINVAL);
574 if (avctx->codec->channel_layouts) {
575 if (!avctx->channel_layout) {
576 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
578 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
579 if (avctx->channel_layout == avctx->codec->channel_layouts[i])
581 if (avctx->codec->channel_layouts[i] == 0) {
582 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
583 ret = AVERROR(EINVAL);
588 if (avctx->channel_layout && avctx->channels) {
589 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) {
590 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
591 ret = AVERROR(EINVAL);
594 } else if (avctx->channel_layout) {
595 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
599 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
600 ret = avctx->codec->init(avctx);
606 entangled_thread_counter--;
608 /* Release any user-supplied mutex. */
610 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
614 av_freep(&avctx->priv_data);
619 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
620 const short *samples)
622 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
623 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
626 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
627 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
628 avctx->frame_number++;
634 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
637 if(buf_size < FF_MIN_BUFFER_SIZE){
638 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
641 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
643 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
644 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
645 avctx->frame_number++;
646 emms_c(); //needed to avoid an emms_c() call before every return;
653 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
654 const AVSubtitle *sub)
657 if(sub->start_display_time) {
658 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
661 if(sub->num_rects == 0 || !sub->rects)
663 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
664 avctx->frame_number++;
668 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
669 int *got_picture_ptr,
675 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
680 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
681 if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
682 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
685 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
687 picture->pkt_dts= avpkt->dts;
690 emms_c(); //needed to avoid an emms_c() call before every return;
692 if (*got_picture_ptr)
693 avctx->frame_number++;
700 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
708 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
709 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
710 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
711 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
714 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
715 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
716 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
720 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
721 avctx->frame_number++;
729 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
737 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
739 avctx->frame_number++;
743 void avsubtitle_free(AVSubtitle *sub)
747 for (i = 0; i < sub->num_rects; i++)
749 av_freep(&sub->rects[i]->pict.data[0]);
750 av_freep(&sub->rects[i]->pict.data[1]);
751 av_freep(&sub->rects[i]->pict.data[2]);
752 av_freep(&sub->rects[i]->pict.data[3]);
753 av_freep(&sub->rects[i]->text);
754 av_freep(&sub->rects[i]->ass);
755 av_freep(&sub->rects[i]);
758 av_freep(&sub->rects);
760 memset(sub, 0, sizeof(AVSubtitle));
763 av_cold int avcodec_close(AVCodecContext *avctx)
765 /* If there is a user-supplied mutex locking routine, call it. */
767 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
771 entangled_thread_counter++;
772 if(entangled_thread_counter != 1){
773 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
774 entangled_thread_counter--;
778 if (HAVE_THREADS && avctx->thread_opaque)
779 ff_thread_free(avctx);
780 if (avctx->codec && avctx->codec->close)
781 avctx->codec->close(avctx);
782 avcodec_default_free_buffers(avctx);
783 avctx->coded_frame = NULL;
784 av_freep(&avctx->priv_data);
785 if(avctx->codec && avctx->codec->encode)
786 av_freep(&avctx->extradata);
788 avctx->active_thread_type = 0;
789 entangled_thread_counter--;
791 /* Release any user-supplied mutex. */
793 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
798 AVCodec *avcodec_find_encoder(enum CodecID id)
800 AVCodec *p, *experimental=NULL;
803 if (p->encode != NULL && p->id == id) {
804 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
814 AVCodec *avcodec_find_encoder_by_name(const char *name)
821 if (p->encode != NULL && strcmp(name,p->name) == 0)
828 AVCodec *avcodec_find_decoder(enum CodecID id)
833 if (p->decode != NULL && p->id == id)
840 AVCodec *avcodec_find_decoder_by_name(const char *name)
847 if (p->decode != NULL && strcmp(name,p->name) == 0)
854 static int get_bit_rate(AVCodecContext *ctx)
859 switch(ctx->codec_type) {
860 case AVMEDIA_TYPE_VIDEO:
861 case AVMEDIA_TYPE_DATA:
862 case AVMEDIA_TYPE_SUBTITLE:
863 case AVMEDIA_TYPE_ATTACHMENT:
864 bit_rate = ctx->bit_rate;
866 case AVMEDIA_TYPE_AUDIO:
867 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
868 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
877 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
881 for (i = 0; i < 4; i++) {
882 len = snprintf(buf, buf_size,
883 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
885 buf_size = buf_size > len ? buf_size - len : 0;
892 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
894 const char *codec_name;
895 const char *profile = NULL;
899 AVRational display_aspect_ratio;
902 p = avcodec_find_encoder(enc->codec_id);
904 p = avcodec_find_decoder(enc->codec_id);
907 codec_name = p->name;
908 profile = av_get_profile_name(p, enc->profile);
909 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
910 /* fake mpeg2 transport stream codec (currently not
912 codec_name = "mpeg2ts";
913 } else if (enc->codec_name[0] != '\0') {
914 codec_name = enc->codec_name;
916 /* output avi tags */
918 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
919 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
923 switch(enc->codec_type) {
924 case AVMEDIA_TYPE_VIDEO:
925 snprintf(buf, buf_size,
927 codec_name, enc->mb_decision ? " (hq)" : "");
929 snprintf(buf + strlen(buf), buf_size - strlen(buf),
931 if (enc->pix_fmt != PIX_FMT_NONE) {
932 snprintf(buf + strlen(buf), buf_size - strlen(buf),
934 avcodec_get_pix_fmt_name(enc->pix_fmt));
937 snprintf(buf + strlen(buf), buf_size - strlen(buf),
939 enc->width, enc->height);
940 if (enc->sample_aspect_ratio.num) {
941 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
942 enc->width*enc->sample_aspect_ratio.num,
943 enc->height*enc->sample_aspect_ratio.den,
945 snprintf(buf + strlen(buf), buf_size - strlen(buf),
946 " [PAR %d:%d DAR %d:%d]",
947 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
948 display_aspect_ratio.num, display_aspect_ratio.den);
950 if(av_log_get_level() >= AV_LOG_DEBUG){
951 int g= av_gcd(enc->time_base.num, enc->time_base.den);
952 snprintf(buf + strlen(buf), buf_size - strlen(buf),
954 enc->time_base.num/g, enc->time_base.den/g);
958 snprintf(buf + strlen(buf), buf_size - strlen(buf),
959 ", q=%d-%d", enc->qmin, enc->qmax);
962 case AVMEDIA_TYPE_AUDIO:
963 snprintf(buf, buf_size,
967 snprintf(buf + strlen(buf), buf_size - strlen(buf),
969 if (enc->sample_rate) {
970 snprintf(buf + strlen(buf), buf_size - strlen(buf),
971 ", %d Hz", enc->sample_rate);
973 av_strlcat(buf, ", ", buf_size);
974 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
975 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
976 snprintf(buf + strlen(buf), buf_size - strlen(buf),
977 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
980 case AVMEDIA_TYPE_DATA:
981 snprintf(buf, buf_size, "Data: %s", codec_name);
983 case AVMEDIA_TYPE_SUBTITLE:
984 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
986 case AVMEDIA_TYPE_ATTACHMENT:
987 snprintf(buf, buf_size, "Attachment: %s", codec_name);
990 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
994 if (enc->flags & CODEC_FLAG_PASS1)
995 snprintf(buf + strlen(buf), buf_size - strlen(buf),
997 if (enc->flags & CODEC_FLAG_PASS2)
998 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1001 bitrate = get_bit_rate(enc);
1003 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1004 ", %d kb/s", bitrate / 1000);
1008 const char *av_get_profile_name(const AVCodec *codec, int profile)
1011 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1014 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1015 if (p->profile == profile)
1021 unsigned avcodec_version( void )
1023 return LIBAVCODEC_VERSION_INT;
1026 const char *avcodec_configuration(void)
1028 return LIBAV_CONFIGURATION;
1031 const char *avcodec_license(void)
1033 #define LICENSE_PREFIX "libavcodec license: "
1034 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1037 void avcodec_init(void)
1039 static int initialized = 0;
1041 if (initialized != 0)
1045 dsputil_static_init();
1048 void avcodec_flush_buffers(AVCodecContext *avctx)
1050 if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1051 ff_thread_flush(avctx);
1052 if(avctx->codec->flush)
1053 avctx->codec->flush(avctx);
1056 void avcodec_default_free_buffers(AVCodecContext *s){
1059 if(s->internal_buffer==NULL) return;
1061 if (s->internal_buffer_count)
1062 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1063 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1064 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1066 av_freep(&buf->base[j]);
1070 av_freep(&s->internal_buffer);
1072 s->internal_buffer_count=0;
1075 #if FF_API_OLD_FF_PICT_TYPES
1076 char av_get_pict_type_char(int pict_type){
1077 return av_get_picture_type_char(pict_type);
1081 int av_get_bits_per_sample(enum CodecID codec_id){
1083 case CODEC_ID_ADPCM_SBPRO_2:
1085 case CODEC_ID_ADPCM_SBPRO_3:
1087 case CODEC_ID_ADPCM_SBPRO_4:
1088 case CODEC_ID_ADPCM_CT:
1089 case CODEC_ID_ADPCM_IMA_WAV:
1090 case CODEC_ID_ADPCM_MS:
1091 case CODEC_ID_ADPCM_YAMAHA:
1093 case CODEC_ID_ADPCM_G722:
1094 case CODEC_ID_PCM_ALAW:
1095 case CODEC_ID_PCM_MULAW:
1096 case CODEC_ID_PCM_S8:
1097 case CODEC_ID_PCM_U8:
1098 case CODEC_ID_PCM_ZORK:
1100 case CODEC_ID_PCM_S16BE:
1101 case CODEC_ID_PCM_S16LE:
1102 case CODEC_ID_PCM_S16LE_PLANAR:
1103 case CODEC_ID_PCM_U16BE:
1104 case CODEC_ID_PCM_U16LE:
1106 case CODEC_ID_PCM_S24DAUD:
1107 case CODEC_ID_PCM_S24BE:
1108 case CODEC_ID_PCM_S24LE:
1109 case CODEC_ID_PCM_U24BE:
1110 case CODEC_ID_PCM_U24LE:
1112 case CODEC_ID_PCM_S32BE:
1113 case CODEC_ID_PCM_S32LE:
1114 case CODEC_ID_PCM_U32BE:
1115 case CODEC_ID_PCM_U32LE:
1116 case CODEC_ID_PCM_F32BE:
1117 case CODEC_ID_PCM_F32LE:
1119 case CODEC_ID_PCM_F64BE:
1120 case CODEC_ID_PCM_F64LE:
1127 #if FF_API_OLD_SAMPLE_FMT
1128 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1129 return av_get_bits_per_sample_fmt(sample_fmt);
1134 int ff_thread_init(AVCodecContext *s){
1139 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1153 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1155 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1159 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1161 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav "
1162 "version to the newest one from Git. If the problem still "
1163 "occurs, it means that your file has a feature which has not "
1164 "been implemented.\n", feature);
1166 av_log_ask_for_sample(avc, NULL);
1169 void av_log_ask_for_sample(void *avc, const char *msg, ...)
1171 va_list argument_list;
1173 va_start(argument_list, msg);
1176 av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
1177 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1178 "of this file to ftp://upload.libav.org/incoming/ "
1179 "and contact the libav-devel mailing list.\n");
1181 va_end(argument_list);
1184 static AVHWAccel *first_hwaccel = NULL;
1186 void av_register_hwaccel(AVHWAccel *hwaccel)
1188 AVHWAccel **p = &first_hwaccel;
1192 hwaccel->next = NULL;
1195 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1197 return hwaccel ? hwaccel->next : first_hwaccel;
1200 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1202 AVHWAccel *hwaccel=NULL;
1204 while((hwaccel= av_hwaccel_next(hwaccel))){
1205 if ( hwaccel->id == codec_id
1206 && hwaccel->pix_fmt == pix_fmt)
1212 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1214 if (ff_lockmgr_cb) {
1215 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1221 if (ff_lockmgr_cb) {
1222 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1228 unsigned int ff_toupper4(unsigned int x)
1230 return toupper( x &0xFF)
1231 + (toupper((x>>8 )&0xFF)<<8 )
1232 + (toupper((x>>16)&0xFF)<<16)
1233 + (toupper((x>>24)&0xFF)<<24);
1238 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1241 return avctx->get_buffer(avctx, f);
1244 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1246 f->owner->release_buffer(f->owner, f);
1249 void ff_thread_finish_setup(AVCodecContext *avctx)
1253 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1257 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1263 #if FF_API_THREAD_INIT
1264 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1266 s->thread_count = thread_count;
1267 return ff_thread_init(s);