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 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 pic->reordered_opaque= s->reordered_opaque;
349 if(s->debug&FF_DEBUG_BUFFERS)
350 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
355 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
357 InternalBuffer *buf, *last;
359 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
360 assert(s->internal_buffer_count);
362 buf = NULL; /* avoids warning */
363 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
364 buf= &((InternalBuffer*)s->internal_buffer)[i];
365 if(buf->data[0] == pic->data[0])
368 assert(i < s->internal_buffer_count);
369 s->internal_buffer_count--;
370 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
372 FFSWAP(InternalBuffer, *buf, *last);
376 // pic->base[i]=NULL;
378 //printf("R%X\n", pic->opaque);
380 if(s->debug&FF_DEBUG_BUFFERS)
381 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
384 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
388 /* If no picture return a new buffer */
389 if(pic->data[0] == NULL) {
390 /* We will copy from buffer, so must be readable */
391 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
392 return s->get_buffer(s, pic);
395 /* If internal buffer type return the same buffer */
396 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
397 pic->reordered_opaque= s->reordered_opaque;
402 * Not internal type and reget_buffer not overridden, emulate cr buffer
405 for(i = 0; i < 4; i++)
406 pic->data[i] = pic->base[i] = NULL;
408 /* Allocate new frame */
409 if (s->get_buffer(s, pic))
411 /* Copy image data from old buffer to new buffer */
412 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
414 s->release_buffer(s, &temp_pic); // Release old frame
418 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
421 for(i=0; i<count; i++){
422 int r= func(c, (char*)arg + i*size);
428 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
431 for(i=0; i<count; i++){
432 int r= func(c, arg, i, 0);
438 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
439 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
444 void avcodec_get_frame_defaults(AVFrame *pic){
445 memset(pic, 0, sizeof(AVFrame));
447 pic->pts= AV_NOPTS_VALUE;
451 AVFrame *avcodec_alloc_frame(void){
452 AVFrame *pic= av_malloc(sizeof(AVFrame));
454 if(pic==NULL) return NULL;
456 avcodec_get_frame_defaults(pic);
461 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
465 /* If there is a user-supplied mutex locking routine, call it. */
467 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
471 entangled_thread_counter++;
472 if(entangled_thread_counter != 1){
473 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
477 if(avctx->codec || !codec)
480 if (codec->priv_data_size > 0) {
481 if(!avctx->priv_data){
482 avctx->priv_data = av_mallocz(codec->priv_data_size);
483 if (!avctx->priv_data) {
484 ret = AVERROR(ENOMEM);
487 if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
488 *(AVClass**)avctx->priv_data= codec->priv_class;
489 av_opt_set_defaults(avctx->priv_data);
493 avctx->priv_data = NULL;
496 if(avctx->coded_width && avctx->coded_height)
497 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
498 else if(avctx->width && avctx->height)
499 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
501 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
502 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
503 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
504 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
505 avcodec_set_dimensions(avctx, 0, 0);
508 #define SANE_NB_CHANNELS 128U
509 if (avctx->channels > SANE_NB_CHANNELS) {
510 ret = AVERROR(EINVAL);
514 avctx->codec = codec;
515 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
516 avctx->codec_id == CODEC_ID_NONE) {
517 avctx->codec_type = codec->type;
518 avctx->codec_id = codec->id;
520 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
521 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
524 avctx->frame_number = 0;
525 if (avctx->codec->max_lowres < avctx->lowres) {
526 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
527 avctx->codec->max_lowres);
531 if(avctx->codec->init){
532 ret = avctx->codec->init(avctx);
539 entangled_thread_counter--;
541 /* Release any user-supplied mutex. */
543 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
547 av_freep(&avctx->priv_data);
552 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
553 const short *samples)
555 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
556 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
559 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
560 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
561 avctx->frame_number++;
567 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
570 if(buf_size < FF_MIN_BUFFER_SIZE){
571 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
574 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
576 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
577 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
578 avctx->frame_number++;
579 emms_c(); //needed to avoid an emms_c() call before every return;
586 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
587 const AVSubtitle *sub)
590 if(sub->start_display_time) {
591 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
594 if(sub->num_rects == 0 || !sub->rects)
596 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
597 avctx->frame_number++;
602 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
603 int *got_picture_ptr,
604 const uint8_t *buf, int buf_size)
607 av_init_packet(&avpkt);
609 avpkt.size = buf_size;
610 // HACK for CorePNG to decode as normal PNG by default
611 avpkt.flags = AV_PKT_FLAG_KEY;
613 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
617 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
618 int *got_picture_ptr,
624 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
626 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
627 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
630 emms_c(); //needed to avoid an emms_c() call before every return;
632 if (*got_picture_ptr)
633 avctx->frame_number++;
641 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
643 const uint8_t *buf, int buf_size)
646 av_init_packet(&avpkt);
648 avpkt.size = buf_size;
650 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
654 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
660 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
661 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
662 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
663 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
666 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
667 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
668 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
672 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
673 avctx->frame_number++;
681 #if FF_API_SUBTITLE_OLD
682 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
684 const uint8_t *buf, int buf_size)
687 av_init_packet(&avpkt);
689 avpkt.size = buf_size;
691 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
695 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
702 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
704 avctx->frame_number++;
708 void avsubtitle_free(AVSubtitle *sub)
712 for (i = 0; i < sub->num_rects; i++)
714 av_freep(&sub->rects[i]->pict.data[0]);
715 av_freep(&sub->rects[i]->pict.data[1]);
716 av_freep(&sub->rects[i]->pict.data[2]);
717 av_freep(&sub->rects[i]->pict.data[3]);
718 av_freep(&sub->rects[i]->text);
719 av_freep(&sub->rects[i]->ass);
720 av_freep(&sub->rects[i]);
723 av_freep(&sub->rects);
725 memset(sub, 0, sizeof(AVSubtitle));
728 av_cold int avcodec_close(AVCodecContext *avctx)
730 /* If there is a user-supplied mutex locking routine, call it. */
732 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
736 entangled_thread_counter++;
737 if(entangled_thread_counter != 1){
738 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
739 entangled_thread_counter--;
743 if (HAVE_THREADS && avctx->thread_opaque)
744 avcodec_thread_free(avctx);
745 if (avctx->codec && avctx->codec->close)
746 avctx->codec->close(avctx);
747 avcodec_default_free_buffers(avctx);
748 avctx->coded_frame = NULL;
749 av_freep(&avctx->priv_data);
750 if(avctx->codec && avctx->codec->encode)
751 av_freep(&avctx->extradata);
753 entangled_thread_counter--;
755 /* Release any user-supplied mutex. */
757 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
762 AVCodec *avcodec_find_encoder(enum CodecID id)
764 AVCodec *p, *experimental=NULL;
767 if (p->encode != NULL && p->id == id) {
768 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
778 AVCodec *avcodec_find_encoder_by_name(const char *name)
785 if (p->encode != NULL && strcmp(name,p->name) == 0)
792 AVCodec *avcodec_find_decoder(enum CodecID id)
797 if (p->decode != NULL && p->id == id)
804 AVCodec *avcodec_find_decoder_by_name(const char *name)
811 if (p->decode != NULL && strcmp(name,p->name) == 0)
818 static int get_bit_rate(AVCodecContext *ctx)
823 switch(ctx->codec_type) {
824 case AVMEDIA_TYPE_VIDEO:
825 case AVMEDIA_TYPE_DATA:
826 case AVMEDIA_TYPE_SUBTITLE:
827 case AVMEDIA_TYPE_ATTACHMENT:
828 bit_rate = ctx->bit_rate;
830 case AVMEDIA_TYPE_AUDIO:
831 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
832 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
841 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
845 for (i = 0; i < 4; i++) {
846 len = snprintf(buf, buf_size,
847 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
849 buf_size = buf_size > len ? buf_size - len : 0;
856 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
858 const char *codec_name;
862 AVRational display_aspect_ratio;
865 p = avcodec_find_encoder(enc->codec_id);
867 p = avcodec_find_decoder(enc->codec_id);
870 codec_name = p->name;
871 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
872 /* fake mpeg2 transport stream codec (currently not
874 codec_name = "mpeg2ts";
875 } else if (enc->codec_name[0] != '\0') {
876 codec_name = enc->codec_name;
878 /* output avi tags */
880 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
881 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
885 switch(enc->codec_type) {
886 case AVMEDIA_TYPE_VIDEO:
887 snprintf(buf, buf_size,
889 codec_name, enc->mb_decision ? " (hq)" : "");
890 if (enc->pix_fmt != PIX_FMT_NONE) {
891 snprintf(buf + strlen(buf), buf_size - strlen(buf),
893 avcodec_get_pix_fmt_name(enc->pix_fmt));
896 snprintf(buf + strlen(buf), buf_size - strlen(buf),
898 enc->width, enc->height);
899 if (enc->sample_aspect_ratio.num) {
900 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
901 enc->width*enc->sample_aspect_ratio.num,
902 enc->height*enc->sample_aspect_ratio.den,
904 snprintf(buf + strlen(buf), buf_size - strlen(buf),
905 " [PAR %d:%d DAR %d:%d]",
906 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
907 display_aspect_ratio.num, display_aspect_ratio.den);
909 if(av_log_get_level() >= AV_LOG_DEBUG){
910 int g= av_gcd(enc->time_base.num, enc->time_base.den);
911 snprintf(buf + strlen(buf), buf_size - strlen(buf),
913 enc->time_base.num/g, enc->time_base.den/g);
917 snprintf(buf + strlen(buf), buf_size - strlen(buf),
918 ", q=%d-%d", enc->qmin, enc->qmax);
921 case AVMEDIA_TYPE_AUDIO:
922 snprintf(buf, buf_size,
925 if (enc->sample_rate) {
926 snprintf(buf + strlen(buf), buf_size - strlen(buf),
927 ", %d Hz", enc->sample_rate);
929 av_strlcat(buf, ", ", buf_size);
930 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
931 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
932 snprintf(buf + strlen(buf), buf_size - strlen(buf),
933 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
936 case AVMEDIA_TYPE_DATA:
937 snprintf(buf, buf_size, "Data: %s", codec_name);
939 case AVMEDIA_TYPE_SUBTITLE:
940 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
942 case AVMEDIA_TYPE_ATTACHMENT:
943 snprintf(buf, buf_size, "Attachment: %s", codec_name);
946 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
950 if (enc->flags & CODEC_FLAG_PASS1)
951 snprintf(buf + strlen(buf), buf_size - strlen(buf),
953 if (enc->flags & CODEC_FLAG_PASS2)
954 snprintf(buf + strlen(buf), buf_size - strlen(buf),
957 bitrate = get_bit_rate(enc);
959 snprintf(buf + strlen(buf), buf_size - strlen(buf),
960 ", %d kb/s", bitrate / 1000);
964 unsigned avcodec_version( void )
966 return LIBAVCODEC_VERSION_INT;
969 const char *avcodec_configuration(void)
971 return FFMPEG_CONFIGURATION;
974 const char *avcodec_license(void)
976 #define LICENSE_PREFIX "libavcodec license: "
977 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
980 void avcodec_init(void)
982 static int initialized = 0;
984 if (initialized != 0)
988 dsputil_static_init();
991 void avcodec_flush_buffers(AVCodecContext *avctx)
993 if(avctx->codec->flush)
994 avctx->codec->flush(avctx);
997 void avcodec_default_free_buffers(AVCodecContext *s){
1000 if(s->internal_buffer==NULL) return;
1002 if (s->internal_buffer_count)
1003 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1004 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1005 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1007 av_freep(&buf->base[j]);
1011 av_freep(&s->internal_buffer);
1013 s->internal_buffer_count=0;
1016 char av_get_pict_type_char(int pict_type){
1018 case FF_I_TYPE: return 'I';
1019 case FF_P_TYPE: return 'P';
1020 case FF_B_TYPE: return 'B';
1021 case FF_S_TYPE: return 'S';
1022 case FF_SI_TYPE:return 'i';
1023 case FF_SP_TYPE:return 'p';
1024 case FF_BI_TYPE:return 'b';
1025 default: return '?';
1029 int av_get_bits_per_sample(enum CodecID codec_id){
1031 case CODEC_ID_ADPCM_SBPRO_2:
1033 case CODEC_ID_ADPCM_SBPRO_3:
1035 case CODEC_ID_ADPCM_SBPRO_4:
1036 case CODEC_ID_ADPCM_CT:
1037 case CODEC_ID_ADPCM_IMA_WAV:
1038 case CODEC_ID_ADPCM_MS:
1039 case CODEC_ID_ADPCM_YAMAHA:
1041 case CODEC_ID_PCM_ALAW:
1042 case CODEC_ID_PCM_MULAW:
1043 case CODEC_ID_PCM_S8:
1044 case CODEC_ID_PCM_U8:
1045 case CODEC_ID_PCM_ZORK:
1047 case CODEC_ID_PCM_S16BE:
1048 case CODEC_ID_PCM_S16LE:
1049 case CODEC_ID_PCM_S16LE_PLANAR:
1050 case CODEC_ID_PCM_U16BE:
1051 case CODEC_ID_PCM_U16LE:
1053 case CODEC_ID_PCM_S24DAUD:
1054 case CODEC_ID_PCM_S24BE:
1055 case CODEC_ID_PCM_S24LE:
1056 case CODEC_ID_PCM_U24BE:
1057 case CODEC_ID_PCM_U24LE:
1059 case CODEC_ID_PCM_S32BE:
1060 case CODEC_ID_PCM_S32LE:
1061 case CODEC_ID_PCM_U32BE:
1062 case CODEC_ID_PCM_U32LE:
1063 case CODEC_ID_PCM_F32BE:
1064 case CODEC_ID_PCM_F32LE:
1066 case CODEC_ID_PCM_F64BE:
1067 case CODEC_ID_PCM_F64LE:
1074 #if FF_API_OLD_SAMPLE_FMT
1075 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1076 return av_get_bits_per_sample_fmt(sample_fmt);
1081 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1082 s->thread_count = thread_count;
1087 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1101 #if LIBAVCODEC_VERSION_MAJOR < 53
1102 #include "libavcore/parseutils.h"
1104 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1106 return av_parse_video_size(width_ptr, height_ptr, str);
1109 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1111 return av_parse_video_rate(frame_rate, arg);
1115 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1117 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1121 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1123 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1124 "version to the newest one from SVN. If the problem still "
1125 "occurs, it means that your file has a feature which has not "
1126 "been implemented.", feature);
1128 av_log_ask_for_sample(avc, NULL);
1130 av_log(avc, AV_LOG_WARNING, "\n");
1133 void av_log_ask_for_sample(void *avc, const char *msg)
1136 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1137 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1138 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1139 "and contact the ffmpeg-devel mailing list.\n");
1142 static AVHWAccel *first_hwaccel = NULL;
1144 void av_register_hwaccel(AVHWAccel *hwaccel)
1146 AVHWAccel **p = &first_hwaccel;
1150 hwaccel->next = NULL;
1153 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1155 return hwaccel ? hwaccel->next : first_hwaccel;
1158 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1160 AVHWAccel *hwaccel=NULL;
1162 while((hwaccel= av_hwaccel_next(hwaccel))){
1163 if ( hwaccel->id == codec_id
1164 && hwaccel->pix_fmt == pix_fmt)
1170 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1172 if (ff_lockmgr_cb) {
1173 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1179 if (ff_lockmgr_cb) {
1180 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1186 unsigned int ff_toupper4(unsigned int x)
1188 return toupper( x &0xFF)
1189 + (toupper((x>>8 )&0xFF)<<8 )
1190 + (toupper((x>>16)&0xFF)<<16)
1191 + (toupper((x>>24)&0xFF)<<24);