3 * Copyright (c) 2001 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avstring.h"
29 #include "libavutil/integer.h"
30 #include "libavutil/crc.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavcore/audioconvert.h"
33 #include "libavcore/imgutils.h"
34 #include "libavcore/internal.h"
35 #include "libavcore/samplefmt.h"
38 #include "libavutil/opt.h"
39 #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, FF_INTERNALC_MEM_TYPE 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, FF_INTERNALC_MEM_TYPE 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 #if LIBAVCODEC_VERSION_MAJOR < 53
98 void register_avcodec(AVCodec *codec)
100 avcodec_register(codec);
104 unsigned avcodec_get_edge_width(void)
109 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
110 s->coded_width = width;
111 s->coded_height= height;
112 s->width = -((-width )>>s->lowres);
113 s->height= -((-height)>>s->lowres);
116 typedef struct InternalBuffer{
122 enum PixelFormat pix_fmt;
125 #define INTERNAL_BUFFER_SIZE 32
127 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
132 case PIX_FMT_YUV420P:
133 case PIX_FMT_YUYV422:
134 case PIX_FMT_UYVY422:
135 case PIX_FMT_YUV422P:
136 case PIX_FMT_YUV440P:
137 case PIX_FMT_YUV444P:
139 case PIX_FMT_GRAY16BE:
140 case PIX_FMT_GRAY16LE:
141 case PIX_FMT_YUVJ420P:
142 case PIX_FMT_YUVJ422P:
143 case PIX_FMT_YUVJ440P:
144 case PIX_FMT_YUVJ444P:
145 case PIX_FMT_YUVA420P:
146 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
148 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)
149 h_align= 32; // interlaced is rounded up to 2 MBs
151 case PIX_FMT_YUV411P:
152 case PIX_FMT_UYYVYY411:
156 case PIX_FMT_YUV410P:
157 if(s->codec_id == CODEC_ID_SVQ1){
162 if(s->codec_id == CODEC_ID_RPZA){
169 if(s->codec_id == CODEC_ID_SMC){
175 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
186 *width = FFALIGN(*width , w_align);
187 *height= FFALIGN(*height, h_align);
188 if(s->codec_id == CODEC_ID_H264 || s->lowres)
189 *height+=2; // some of the optimized chroma MC reads one line too much
190 // which is also done in mpeg decoders with lowres > 0
195 linesize_align[3] = STRIDE_ALIGN;
196 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
197 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
198 //picture size unneccessarily in some cases. The solution here is not
199 //pretty and better ideas are welcome!
201 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
202 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
203 s->codec_id == CODEC_ID_VP6A) {
206 linesize_align[2] = 16;
211 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
212 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
213 int linesize_align[4];
215 avcodec_align_dimensions2(s, width, height, linesize_align);
216 align = FFMAX(linesize_align[0], linesize_align[3]);
217 linesize_align[1] <<= chroma_shift;
218 linesize_align[2] <<= chroma_shift;
219 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
220 *width=FFALIGN(*width, align);
223 #if LIBAVCODEC_VERSION_MAJOR < 53
224 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
225 return av_image_check_size(w, h, 0, av_log_ctx);
229 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
236 if(pic->data[0]!=NULL) {
237 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
240 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
241 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
245 if(av_image_check_size(w, h, 0, s))
248 if(s->internal_buffer==NULL){
249 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
252 s->internal_buffer= av_fast_realloc(
254 &s->internal_buffer_size,
255 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
259 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
260 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
263 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
265 av_freep(&buf->base[i]);
271 pic->age= *picture_number - buf->last_pic_num;
272 buf->last_pic_num= *picture_number;
274 int h_chroma_shift, v_chroma_shift;
281 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
283 avcodec_align_dimensions2(s, &w, &h, stride_align);
285 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
291 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
292 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
293 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
294 // increase alignment of w for next try (rhs gives the lowest bit set in w)
299 unaligned |= picture.linesize[i] % stride_align[i];
303 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
307 for (i=0; i<3 && picture.data[i+1]; i++)
308 size[i] = picture.data[i+1] - picture.data[i];
309 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
311 buf->last_pic_num= -256*256*256*64;
312 memset(buf->base, 0, sizeof(buf->base));
313 memset(buf->data, 0, sizeof(buf->data));
315 for(i=0; i<4 && size[i]; i++){
316 const int h_shift= i==0 ? 0 : h_chroma_shift;
317 const int v_shift= i==0 ? 0 : v_chroma_shift;
319 buf->linesize[i]= picture.linesize[i];
321 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
322 if(buf->base[i]==NULL) return -1;
323 memset(buf->base[i], 128, size[i]);
325 // no edge if EDGE EMU or not planar YUV
326 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
327 buf->data[i] = buf->base[i];
329 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
331 if(size[1] && !size[2])
332 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
333 buf->width = s->width;
334 buf->height = s->height;
335 buf->pix_fmt= s->pix_fmt;
336 pic->age= 256*256*256*64;
338 pic->type= FF_BUFFER_TYPE_INTERNAL;
341 pic->base[i]= buf->base[i];
342 pic->data[i]= buf->data[i];
343 pic->linesize[i]= buf->linesize[i];
345 s->internal_buffer_count++;
347 if(s->pkt) pic->pkt_pts= s->pkt->pts;
348 else pic->pkt_pts= AV_NOPTS_VALUE;
349 pic->reordered_opaque= s->reordered_opaque;
351 if(s->debug&FF_DEBUG_BUFFERS)
352 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
357 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
359 InternalBuffer *buf, *last;
361 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
362 assert(s->internal_buffer_count);
364 buf = NULL; /* avoids warning */
365 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
366 buf= &((InternalBuffer*)s->internal_buffer)[i];
367 if(buf->data[0] == pic->data[0])
370 assert(i < s->internal_buffer_count);
371 s->internal_buffer_count--;
372 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
374 FFSWAP(InternalBuffer, *buf, *last);
378 // pic->base[i]=NULL;
380 //printf("R%X\n", pic->opaque);
382 if(s->debug&FF_DEBUG_BUFFERS)
383 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
386 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
390 /* If no picture return a new buffer */
391 if(pic->data[0] == NULL) {
392 /* We will copy from buffer, so must be readable */
393 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
394 return s->get_buffer(s, pic);
397 /* If internal buffer type return the same buffer */
398 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
399 if(s->pkt) pic->pkt_pts= s->pkt->pts;
400 else pic->pkt_pts= AV_NOPTS_VALUE;
401 pic->reordered_opaque= s->reordered_opaque;
406 * Not internal type and reget_buffer not overridden, emulate cr buffer
409 for(i = 0; i < 4; i++)
410 pic->data[i] = pic->base[i] = NULL;
412 /* Allocate new frame */
413 if (s->get_buffer(s, pic))
415 /* Copy image data from old buffer to new buffer */
416 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
418 s->release_buffer(s, &temp_pic); // Release old frame
422 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
425 for(i=0; i<count; i++){
426 int r= func(c, (char*)arg + i*size);
432 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
435 for(i=0; i<count; i++){
436 int r= func(c, arg, i, 0);
442 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
443 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
448 void avcodec_get_frame_defaults(AVFrame *pic){
449 memset(pic, 0, sizeof(AVFrame));
451 pic->pts= AV_NOPTS_VALUE;
455 AVFrame *avcodec_alloc_frame(void){
456 AVFrame *pic= av_malloc(sizeof(AVFrame));
458 if(pic==NULL) return NULL;
460 avcodec_get_frame_defaults(pic);
465 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
469 /* If there is a user-supplied mutex locking routine, call it. */
471 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
475 entangled_thread_counter++;
476 if(entangled_thread_counter != 1){
477 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
481 if(avctx->codec || !codec)
484 if (codec->priv_data_size > 0) {
485 if(!avctx->priv_data){
486 avctx->priv_data = av_mallocz(codec->priv_data_size);
487 if (!avctx->priv_data) {
488 ret = AVERROR(ENOMEM);
491 if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
492 *(AVClass**)avctx->priv_data= codec->priv_class;
493 av_opt_set_defaults(avctx->priv_data);
497 avctx->priv_data = NULL;
500 if(avctx->coded_width && avctx->coded_height)
501 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
502 else if(avctx->width && avctx->height)
503 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
505 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
506 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
507 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
508 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
509 avcodec_set_dimensions(avctx, 0, 0);
512 /* if the decoder init function was already called previously,
513 free the already allocated subtitle_header before overwriting it */
515 av_freep(&avctx->subtitle_header);
517 #define SANE_NB_CHANNELS 128U
518 if (avctx->channels > SANE_NB_CHANNELS) {
519 ret = AVERROR(EINVAL);
523 avctx->codec = codec;
524 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
525 avctx->codec_id == CODEC_ID_NONE) {
526 avctx->codec_type = codec->type;
527 avctx->codec_id = codec->id;
529 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
530 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
531 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
534 avctx->frame_number = 0;
535 if (avctx->codec->max_lowres < avctx->lowres) {
536 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
537 avctx->codec->max_lowres);
541 if(avctx->codec->init){
542 ret = avctx->codec->init(avctx);
549 entangled_thread_counter--;
551 /* Release any user-supplied mutex. */
553 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
557 av_freep(&avctx->priv_data);
562 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
563 const short *samples)
565 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
566 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
569 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
570 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
571 avctx->frame_number++;
577 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
580 if(buf_size < FF_MIN_BUFFER_SIZE){
581 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
584 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
586 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
587 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
588 avctx->frame_number++;
589 emms_c(); //needed to avoid an emms_c() call before every return;
596 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
597 const AVSubtitle *sub)
600 if(sub->start_display_time) {
601 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
604 if(sub->num_rects == 0 || !sub->rects)
606 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
607 avctx->frame_number++;
612 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
613 int *got_picture_ptr,
614 const uint8_t *buf, int buf_size)
617 av_init_packet(&avpkt);
619 avpkt.size = buf_size;
620 // HACK for CorePNG to decode as normal PNG by default
621 avpkt.flags = AV_PKT_FLAG_KEY;
623 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
627 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
628 int *got_picture_ptr,
634 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
639 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
640 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
643 emms_c(); //needed to avoid an emms_c() call before every return;
645 picture->pkt_dts= avpkt->dts;
647 if (*got_picture_ptr)
648 avctx->frame_number++;
656 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
658 const uint8_t *buf, int buf_size)
661 av_init_packet(&avpkt);
663 avpkt.size = buf_size;
665 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
669 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
677 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
678 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
679 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
680 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
683 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
684 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
685 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
689 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
690 avctx->frame_number++;
698 #if FF_API_SUBTITLE_OLD
699 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
701 const uint8_t *buf, int buf_size)
704 av_init_packet(&avpkt);
706 avpkt.size = buf_size;
708 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
712 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
720 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
722 avctx->frame_number++;
726 void avsubtitle_free(AVSubtitle *sub)
730 for (i = 0; i < sub->num_rects; i++)
732 av_freep(&sub->rects[i]->pict.data[0]);
733 av_freep(&sub->rects[i]->pict.data[1]);
734 av_freep(&sub->rects[i]->pict.data[2]);
735 av_freep(&sub->rects[i]->pict.data[3]);
736 av_freep(&sub->rects[i]->text);
737 av_freep(&sub->rects[i]->ass);
738 av_freep(&sub->rects[i]);
741 av_freep(&sub->rects);
743 memset(sub, 0, sizeof(AVSubtitle));
746 av_cold int avcodec_close(AVCodecContext *avctx)
748 /* If there is a user-supplied mutex locking routine, call it. */
750 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
754 entangled_thread_counter++;
755 if(entangled_thread_counter != 1){
756 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
757 entangled_thread_counter--;
761 if (HAVE_THREADS && avctx->thread_opaque)
762 avcodec_thread_free(avctx);
763 if (avctx->codec && avctx->codec->close)
764 avctx->codec->close(avctx);
765 avcodec_default_free_buffers(avctx);
766 avctx->coded_frame = NULL;
767 av_freep(&avctx->priv_data);
768 if(avctx->codec && avctx->codec->encode)
769 av_freep(&avctx->extradata);
771 entangled_thread_counter--;
773 /* Release any user-supplied mutex. */
775 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
780 AVCodec *avcodec_find_encoder(enum CodecID id)
782 AVCodec *p, *experimental=NULL;
785 if (p->encode != NULL && p->id == id) {
786 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
796 AVCodec *avcodec_find_encoder_by_name(const char *name)
803 if (p->encode != NULL && strcmp(name,p->name) == 0)
810 AVCodec *avcodec_find_decoder(enum CodecID id)
815 if (p->decode != NULL && p->id == id)
822 AVCodec *avcodec_find_decoder_by_name(const char *name)
829 if (p->decode != NULL && strcmp(name,p->name) == 0)
836 static int get_bit_rate(AVCodecContext *ctx)
841 switch(ctx->codec_type) {
842 case AVMEDIA_TYPE_VIDEO:
843 case AVMEDIA_TYPE_DATA:
844 case AVMEDIA_TYPE_SUBTITLE:
845 case AVMEDIA_TYPE_ATTACHMENT:
846 bit_rate = ctx->bit_rate;
848 case AVMEDIA_TYPE_AUDIO:
849 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
850 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
859 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
863 for (i = 0; i < 4; i++) {
864 len = snprintf(buf, buf_size,
865 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
867 buf_size = buf_size > len ? buf_size - len : 0;
874 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
876 const char *codec_name;
877 const char *profile = NULL;
881 AVRational display_aspect_ratio;
884 p = avcodec_find_encoder(enc->codec_id);
886 p = avcodec_find_decoder(enc->codec_id);
889 codec_name = p->name;
890 profile = av_get_profile_name(p, enc->profile);
891 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
892 /* fake mpeg2 transport stream codec (currently not
894 codec_name = "mpeg2ts";
895 } else if (enc->codec_name[0] != '\0') {
896 codec_name = enc->codec_name;
898 /* output avi tags */
900 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
901 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
905 switch(enc->codec_type) {
906 case AVMEDIA_TYPE_VIDEO:
907 snprintf(buf, buf_size,
909 codec_name, enc->mb_decision ? " (hq)" : "");
911 snprintf(buf + strlen(buf), buf_size - strlen(buf),
913 if (enc->pix_fmt != PIX_FMT_NONE) {
914 snprintf(buf + strlen(buf), buf_size - strlen(buf),
916 avcodec_get_pix_fmt_name(enc->pix_fmt));
919 snprintf(buf + strlen(buf), buf_size - strlen(buf),
921 enc->width, enc->height);
922 if (enc->sample_aspect_ratio.num) {
923 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
924 enc->width*enc->sample_aspect_ratio.num,
925 enc->height*enc->sample_aspect_ratio.den,
927 snprintf(buf + strlen(buf), buf_size - strlen(buf),
928 " [PAR %d:%d DAR %d:%d]",
929 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
930 display_aspect_ratio.num, display_aspect_ratio.den);
932 if(av_log_get_level() >= AV_LOG_DEBUG){
933 int g= av_gcd(enc->time_base.num, enc->time_base.den);
934 snprintf(buf + strlen(buf), buf_size - strlen(buf),
936 enc->time_base.num/g, enc->time_base.den/g);
940 snprintf(buf + strlen(buf), buf_size - strlen(buf),
941 ", q=%d-%d", enc->qmin, enc->qmax);
944 case AVMEDIA_TYPE_AUDIO:
945 snprintf(buf, buf_size,
949 snprintf(buf + strlen(buf), buf_size - strlen(buf),
951 if (enc->sample_rate) {
952 snprintf(buf + strlen(buf), buf_size - strlen(buf),
953 ", %d Hz", enc->sample_rate);
955 av_strlcat(buf, ", ", buf_size);
956 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
957 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
958 snprintf(buf + strlen(buf), buf_size - strlen(buf),
959 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
962 case AVMEDIA_TYPE_DATA:
963 snprintf(buf, buf_size, "Data: %s", codec_name);
965 case AVMEDIA_TYPE_SUBTITLE:
966 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
968 case AVMEDIA_TYPE_ATTACHMENT:
969 snprintf(buf, buf_size, "Attachment: %s", codec_name);
972 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
976 if (enc->flags & CODEC_FLAG_PASS1)
977 snprintf(buf + strlen(buf), buf_size - strlen(buf),
979 if (enc->flags & CODEC_FLAG_PASS2)
980 snprintf(buf + strlen(buf), buf_size - strlen(buf),
983 bitrate = get_bit_rate(enc);
985 snprintf(buf + strlen(buf), buf_size - strlen(buf),
986 ", %d kb/s", bitrate / 1000);
990 const char *av_get_profile_name(const AVCodec *codec, int profile)
993 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
996 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
997 if (p->profile == profile)
1003 unsigned avcodec_version( void )
1005 return LIBAVCODEC_VERSION_INT;
1008 const char *avcodec_configuration(void)
1010 return FFMPEG_CONFIGURATION;
1013 const char *avcodec_license(void)
1015 #define LICENSE_PREFIX "libavcodec license: "
1016 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1019 void avcodec_init(void)
1021 static int initialized = 0;
1023 if (initialized != 0)
1027 dsputil_static_init();
1030 void avcodec_flush_buffers(AVCodecContext *avctx)
1032 if(avctx->codec->flush)
1033 avctx->codec->flush(avctx);
1036 void avcodec_default_free_buffers(AVCodecContext *s){
1039 if(s->internal_buffer==NULL) return;
1041 if (s->internal_buffer_count)
1042 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1043 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1044 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1046 av_freep(&buf->base[j]);
1050 av_freep(&s->internal_buffer);
1052 s->internal_buffer_count=0;
1055 char av_get_pict_type_char(int pict_type){
1057 case FF_I_TYPE: return 'I';
1058 case FF_P_TYPE: return 'P';
1059 case FF_B_TYPE: return 'B';
1060 case FF_S_TYPE: return 'S';
1061 case FF_SI_TYPE:return 'i';
1062 case FF_SP_TYPE:return 'p';
1063 case FF_BI_TYPE:return 'b';
1064 default: return '?';
1068 int av_get_bits_per_sample(enum CodecID codec_id){
1070 case CODEC_ID_ADPCM_SBPRO_2:
1072 case CODEC_ID_ADPCM_SBPRO_3:
1074 case CODEC_ID_ADPCM_SBPRO_4:
1075 case CODEC_ID_ADPCM_CT:
1076 case CODEC_ID_ADPCM_IMA_WAV:
1077 case CODEC_ID_ADPCM_MS:
1078 case CODEC_ID_ADPCM_YAMAHA:
1080 case CODEC_ID_PCM_ALAW:
1081 case CODEC_ID_PCM_MULAW:
1082 case CODEC_ID_PCM_S8:
1083 case CODEC_ID_PCM_U8:
1084 case CODEC_ID_PCM_ZORK:
1086 case CODEC_ID_PCM_S16BE:
1087 case CODEC_ID_PCM_S16LE:
1088 case CODEC_ID_PCM_S16LE_PLANAR:
1089 case CODEC_ID_PCM_U16BE:
1090 case CODEC_ID_PCM_U16LE:
1092 case CODEC_ID_PCM_S24DAUD:
1093 case CODEC_ID_PCM_S24BE:
1094 case CODEC_ID_PCM_S24LE:
1095 case CODEC_ID_PCM_U24BE:
1096 case CODEC_ID_PCM_U24LE:
1098 case CODEC_ID_PCM_S32BE:
1099 case CODEC_ID_PCM_S32LE:
1100 case CODEC_ID_PCM_U32BE:
1101 case CODEC_ID_PCM_U32LE:
1102 case CODEC_ID_PCM_F32BE:
1103 case CODEC_ID_PCM_F32LE:
1105 case CODEC_ID_PCM_F64BE:
1106 case CODEC_ID_PCM_F64LE:
1113 #if FF_API_OLD_SAMPLE_FMT
1114 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1115 return av_get_bits_per_sample_fmt(sample_fmt);
1120 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1121 s->thread_count = thread_count;
1126 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1140 #if LIBAVCODEC_VERSION_MAJOR < 53
1141 #include "libavcore/parseutils.h"
1143 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1145 return av_parse_video_size(width_ptr, height_ptr, str);
1148 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1150 return av_parse_video_rate(frame_rate, arg);
1154 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1156 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1160 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1162 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1163 "version to the newest one from Git. If the problem still "
1164 "occurs, it means that your file has a feature which has not "
1165 "been implemented.", feature);
1167 av_log_ask_for_sample(avc, NULL);
1169 av_log(avc, AV_LOG_WARNING, "\n");
1172 void av_log_ask_for_sample(void *avc, const char *msg)
1175 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1176 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1177 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1178 "and contact the ffmpeg-devel mailing list.\n");
1181 static AVHWAccel *first_hwaccel = NULL;
1183 void av_register_hwaccel(AVHWAccel *hwaccel)
1185 AVHWAccel **p = &first_hwaccel;
1189 hwaccel->next = NULL;
1192 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1194 return hwaccel ? hwaccel->next : first_hwaccel;
1197 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1199 AVHWAccel *hwaccel=NULL;
1201 while((hwaccel= av_hwaccel_next(hwaccel))){
1202 if ( hwaccel->id == codec_id
1203 && hwaccel->pix_fmt == pix_fmt)
1209 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1211 if (ff_lockmgr_cb) {
1212 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1218 if (ff_lockmgr_cb) {
1219 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1225 unsigned int ff_toupper4(unsigned int x)
1227 return toupper( x &0xFF)
1228 + (toupper((x>>8 )&0xFF)<<8 )
1229 + (toupper((x>>16)&0xFF)<<16)
1230 + (toupper((x>>24)&0xFF)<<24);