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/imgutils.h"
36 #include "imgconvert.h"
37 #include "audioconvert.h"
44 static int volatile entangled_thread_counter=0;
45 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
46 static void *codec_mutex;
48 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
53 *size= FFMAX(17*min_size/16 + 32, min_size);
55 ptr= av_realloc(ptr, *size);
56 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
62 void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
67 *size= FFMAX(17*min_size/16 + 32, min_size);
69 *p = av_malloc(*size);
73 /* encoder management */
74 static AVCodec *first_avcodec = NULL;
76 AVCodec *av_codec_next(AVCodec *c){
78 else return first_avcodec;
81 void avcodec_register(AVCodec *codec)
86 while (*p != NULL) p = &(*p)->next;
91 #if LIBAVCODEC_VERSION_MAJOR < 53
92 void register_avcodec(AVCodec *codec)
94 avcodec_register(codec);
98 unsigned avcodec_get_edge_width(void)
103 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
104 s->coded_width = width;
105 s->coded_height= height;
106 s->width = -((-width )>>s->lowres);
107 s->height= -((-height)>>s->lowres);
110 typedef struct InternalBuffer{
116 enum PixelFormat pix_fmt;
119 #define INTERNAL_BUFFER_SIZE 32
121 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){
126 case PIX_FMT_YUV420P:
127 case PIX_FMT_YUYV422:
128 case PIX_FMT_UYVY422:
129 case PIX_FMT_YUV422P:
130 case PIX_FMT_YUV440P:
131 case PIX_FMT_YUV444P:
133 case PIX_FMT_GRAY16BE:
134 case PIX_FMT_GRAY16LE:
135 case PIX_FMT_YUVJ420P:
136 case PIX_FMT_YUVJ422P:
137 case PIX_FMT_YUVJ440P:
138 case PIX_FMT_YUVJ444P:
139 case PIX_FMT_YUVA420P:
140 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
142 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)
143 h_align= 32; // interlaced is rounded up to 2 MBs
145 case PIX_FMT_YUV411P:
146 case PIX_FMT_UYYVYY411:
150 case PIX_FMT_YUV410P:
151 if(s->codec_id == CODEC_ID_SVQ1){
156 if(s->codec_id == CODEC_ID_RPZA){
163 if(s->codec_id == CODEC_ID_SMC){
169 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
180 *width = FFALIGN(*width , w_align);
181 *height= FFALIGN(*height, h_align);
182 if(s->codec_id == CODEC_ID_H264)
183 *height+=2; // some of the optimized chroma MC reads one line too much
188 linesize_align[3] = STRIDE_ALIGN;
189 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
190 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
191 //picture size unneccessarily in some cases. The solution here is not
192 //pretty and better ideas are welcome!
194 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 ||
195 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F ||
196 s->codec_id == CODEC_ID_VP6A) {
199 linesize_align[2] = 16;
204 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
205 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w;
206 int linesize_align[4];
208 avcodec_align_dimensions2(s, width, height, linesize_align);
209 align = FFMAX(linesize_align[0], linesize_align[3]);
210 linesize_align[1] <<= chroma_shift;
211 linesize_align[2] <<= chroma_shift;
212 align = FFMAX3(align, linesize_align[1], linesize_align[2]);
213 *width=FFALIGN(*width, align);
216 #if LIBAVCODEC_VERSION_MAJOR < 53
217 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
218 return av_image_check_size(w, h, 0, av_log_ctx);
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)){
258 av_freep(&buf->base[i]);
264 pic->age= *picture_number - buf->last_pic_num;
265 buf->last_pic_num= *picture_number;
267 int h_chroma_shift, v_chroma_shift;
274 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
276 avcodec_align_dimensions2(s, &w, &h, stride_align);
278 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
284 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
285 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
286 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
287 // increase alignment of w for next try (rhs gives the lowest bit set in w)
292 unaligned |= picture.linesize[i] % stride_align[i];
296 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
300 for (i=0; i<3 && picture.data[i+1]; i++)
301 size[i] = picture.data[i+1] - picture.data[i];
302 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
304 buf->last_pic_num= -256*256*256*64;
305 memset(buf->base, 0, sizeof(buf->base));
306 memset(buf->data, 0, sizeof(buf->data));
308 for(i=0; i<4 && size[i]; i++){
309 const int h_shift= i==0 ? 0 : h_chroma_shift;
310 const int v_shift= i==0 ? 0 : v_chroma_shift;
312 buf->linesize[i]= picture.linesize[i];
314 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
315 if(buf->base[i]==NULL) return -1;
316 memset(buf->base[i], 128, size[i]);
318 // no edge if EDGE EMU or not planar YUV
319 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
320 buf->data[i] = buf->base[i];
322 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
324 if(size[1] && !size[2])
325 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
326 buf->width = s->width;
327 buf->height = s->height;
328 buf->pix_fmt= s->pix_fmt;
329 pic->age= 256*256*256*64;
331 pic->type= FF_BUFFER_TYPE_INTERNAL;
334 pic->base[i]= buf->base[i];
335 pic->data[i]= buf->data[i];
336 pic->linesize[i]= buf->linesize[i];
338 s->internal_buffer_count++;
340 pic->reordered_opaque= s->reordered_opaque;
342 if(s->debug&FF_DEBUG_BUFFERS)
343 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
348 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
350 InternalBuffer *buf, *last;
352 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
353 assert(s->internal_buffer_count);
355 buf = NULL; /* avoids warning */
356 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
357 buf= &((InternalBuffer*)s->internal_buffer)[i];
358 if(buf->data[0] == pic->data[0])
361 assert(i < s->internal_buffer_count);
362 s->internal_buffer_count--;
363 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
365 FFSWAP(InternalBuffer, *buf, *last);
369 // pic->base[i]=NULL;
371 //printf("R%X\n", pic->opaque);
373 if(s->debug&FF_DEBUG_BUFFERS)
374 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
377 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
381 /* If no picture return a new buffer */
382 if(pic->data[0] == NULL) {
383 /* We will copy from buffer, so must be readable */
384 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
385 return s->get_buffer(s, pic);
388 /* If internal buffer type return the same buffer */
389 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
390 pic->reordered_opaque= s->reordered_opaque;
395 * Not internal type and reget_buffer not overridden, emulate cr buffer
398 for(i = 0; i < 4; i++)
399 pic->data[i] = pic->base[i] = NULL;
401 /* Allocate new frame */
402 if (s->get_buffer(s, pic))
404 /* Copy image data from old buffer to new buffer */
405 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
407 s->release_buffer(s, &temp_pic); // Release old frame
411 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
414 for(i=0; i<count; i++){
415 int r= func(c, (char*)arg + i*size);
421 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
424 for(i=0; i<count; i++){
425 int r= func(c, arg, i, 0);
431 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
432 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
437 void avcodec_get_frame_defaults(AVFrame *pic){
438 memset(pic, 0, sizeof(AVFrame));
440 pic->pts= AV_NOPTS_VALUE;
444 AVFrame *avcodec_alloc_frame(void){
445 AVFrame *pic= av_malloc(sizeof(AVFrame));
447 if(pic==NULL) return NULL;
449 avcodec_get_frame_defaults(pic);
454 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
458 /* If there is a user-supplied mutex locking routine, call it. */
460 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
464 entangled_thread_counter++;
465 if(entangled_thread_counter != 1){
466 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
470 if(avctx->codec || !codec)
473 if (codec->priv_data_size > 0) {
474 avctx->priv_data = av_mallocz(codec->priv_data_size);
475 if (!avctx->priv_data) {
476 ret = AVERROR(ENOMEM);
480 avctx->priv_data = NULL;
483 if(avctx->coded_width && avctx->coded_height)
484 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
485 else if(avctx->width && avctx->height)
486 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
488 #define SANE_NB_CHANNELS 128U
489 if (((avctx->coded_width || avctx->coded_height)
490 && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
491 || avctx->channels > SANE_NB_CHANNELS) {
492 ret = AVERROR(EINVAL);
496 avctx->codec = codec;
497 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
498 avctx->codec_id == CODEC_ID_NONE) {
499 avctx->codec_type = codec->type;
500 avctx->codec_id = codec->id;
502 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
503 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
506 avctx->frame_number = 0;
507 if(avctx->codec->init){
508 if (avctx->codec->max_lowres < avctx->lowres) {
509 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
510 avctx->codec->max_lowres);
514 ret = avctx->codec->init(avctx);
521 entangled_thread_counter--;
523 /* Release any user-supplied mutex. */
525 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
529 av_freep(&avctx->priv_data);
534 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
535 const short *samples)
537 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
538 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
541 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
542 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
543 avctx->frame_number++;
549 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
552 if(buf_size < FF_MIN_BUFFER_SIZE){
553 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
556 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
558 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
559 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
560 avctx->frame_number++;
561 emms_c(); //needed to avoid an emms_c() call before every return;
568 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
569 const AVSubtitle *sub)
572 if(sub->start_display_time) {
573 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
576 if(sub->num_rects == 0 || !sub->rects)
578 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
579 avctx->frame_number++;
583 #if LIBAVCODEC_VERSION_MAJOR < 53
584 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
585 int *got_picture_ptr,
586 const uint8_t *buf, int buf_size)
589 av_init_packet(&avpkt);
591 avpkt.size = buf_size;
592 // HACK for CorePNG to decode as normal PNG by default
593 avpkt.flags = AV_PKT_FLAG_KEY;
595 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
599 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
600 int *got_picture_ptr,
606 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
608 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
609 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
612 emms_c(); //needed to avoid an emms_c() call before every return;
614 if (*got_picture_ptr)
615 avctx->frame_number++;
622 #if LIBAVCODEC_VERSION_MAJOR < 53
623 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
625 const uint8_t *buf, int buf_size)
628 av_init_packet(&avpkt);
630 avpkt.size = buf_size;
632 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
636 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
642 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
643 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
644 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
645 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
648 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
649 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
650 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
654 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
655 avctx->frame_number++;
663 #if LIBAVCODEC_VERSION_MAJOR < 53
664 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
666 const uint8_t *buf, int buf_size)
669 av_init_packet(&avpkt);
671 avpkt.size = buf_size;
673 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
677 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
684 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
686 avctx->frame_number++;
690 void avsubtitle_free(AVSubtitle *sub)
694 for (i = 0; i < sub->num_rects; i++)
696 av_freep(&sub->rects[i]->pict.data[0]);
697 av_freep(&sub->rects[i]->pict.data[1]);
698 av_freep(&sub->rects[i]->pict.data[2]);
699 av_freep(&sub->rects[i]->pict.data[3]);
700 av_freep(&sub->rects[i]->text);
701 av_freep(&sub->rects[i]->ass);
702 av_freep(&sub->rects[i]);
705 av_freep(&sub->rects);
707 memset(sub, 0, sizeof(AVSubtitle));
710 av_cold int avcodec_close(AVCodecContext *avctx)
712 /* If there is a user-supplied mutex locking routine, call it. */
714 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
718 entangled_thread_counter++;
719 if(entangled_thread_counter != 1){
720 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
721 entangled_thread_counter--;
725 if (HAVE_THREADS && avctx->thread_opaque)
726 avcodec_thread_free(avctx);
727 if (avctx->codec && avctx->codec->close)
728 avctx->codec->close(avctx);
729 avcodec_default_free_buffers(avctx);
730 avctx->coded_frame = NULL;
731 av_freep(&avctx->priv_data);
732 if(avctx->codec && avctx->codec->encode)
733 av_freep(&avctx->extradata);
735 entangled_thread_counter--;
737 /* Release any user-supplied mutex. */
739 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
744 AVCodec *avcodec_find_encoder(enum CodecID id)
746 AVCodec *p, *experimental=NULL;
749 if (p->encode != NULL && p->id == id) {
750 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
760 AVCodec *avcodec_find_encoder_by_name(const char *name)
767 if (p->encode != NULL && strcmp(name,p->name) == 0)
774 AVCodec *avcodec_find_decoder(enum CodecID id)
779 if (p->decode != NULL && p->id == id)
786 AVCodec *avcodec_find_decoder_by_name(const char *name)
793 if (p->decode != NULL && strcmp(name,p->name) == 0)
800 static int get_bit_rate(AVCodecContext *ctx)
805 switch(ctx->codec_type) {
806 case AVMEDIA_TYPE_VIDEO:
807 case AVMEDIA_TYPE_DATA:
808 case AVMEDIA_TYPE_SUBTITLE:
809 case AVMEDIA_TYPE_ATTACHMENT:
810 bit_rate = ctx->bit_rate;
812 case AVMEDIA_TYPE_AUDIO:
813 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
814 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
823 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
827 for (i = 0; i < 4; i++) {
828 len = snprintf(buf, buf_size,
829 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
831 buf_size = buf_size > len ? buf_size - len : 0;
838 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
840 const char *codec_name;
844 AVRational display_aspect_ratio;
847 p = avcodec_find_encoder(enc->codec_id);
849 p = avcodec_find_decoder(enc->codec_id);
852 codec_name = p->name;
853 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
854 /* fake mpeg2 transport stream codec (currently not
856 codec_name = "mpeg2ts";
857 } else if (enc->codec_name[0] != '\0') {
858 codec_name = enc->codec_name;
860 /* output avi tags */
862 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
863 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
867 switch(enc->codec_type) {
868 case AVMEDIA_TYPE_VIDEO:
869 snprintf(buf, buf_size,
871 codec_name, enc->mb_decision ? " (hq)" : "");
872 if (enc->pix_fmt != PIX_FMT_NONE) {
873 snprintf(buf + strlen(buf), buf_size - strlen(buf),
875 avcodec_get_pix_fmt_name(enc->pix_fmt));
878 snprintf(buf + strlen(buf), buf_size - strlen(buf),
880 enc->width, enc->height);
881 if (enc->sample_aspect_ratio.num) {
882 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
883 enc->width*enc->sample_aspect_ratio.num,
884 enc->height*enc->sample_aspect_ratio.den,
886 snprintf(buf + strlen(buf), buf_size - strlen(buf),
887 " [PAR %d:%d DAR %d:%d]",
888 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
889 display_aspect_ratio.num, display_aspect_ratio.den);
891 if(av_log_get_level() >= AV_LOG_DEBUG){
892 int g= av_gcd(enc->time_base.num, enc->time_base.den);
893 snprintf(buf + strlen(buf), buf_size - strlen(buf),
895 enc->time_base.num/g, enc->time_base.den/g);
899 snprintf(buf + strlen(buf), buf_size - strlen(buf),
900 ", q=%d-%d", enc->qmin, enc->qmax);
903 case AVMEDIA_TYPE_AUDIO:
904 snprintf(buf, buf_size,
907 if (enc->sample_rate) {
908 snprintf(buf + strlen(buf), buf_size - strlen(buf),
909 ", %d Hz", enc->sample_rate);
911 av_strlcat(buf, ", ", buf_size);
912 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
913 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
914 snprintf(buf + strlen(buf), buf_size - strlen(buf),
915 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
918 case AVMEDIA_TYPE_DATA:
919 snprintf(buf, buf_size, "Data: %s", codec_name);
921 case AVMEDIA_TYPE_SUBTITLE:
922 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
924 case AVMEDIA_TYPE_ATTACHMENT:
925 snprintf(buf, buf_size, "Attachment: %s", codec_name);
928 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
932 if (enc->flags & CODEC_FLAG_PASS1)
933 snprintf(buf + strlen(buf), buf_size - strlen(buf),
935 if (enc->flags & CODEC_FLAG_PASS2)
936 snprintf(buf + strlen(buf), buf_size - strlen(buf),
939 bitrate = get_bit_rate(enc);
941 snprintf(buf + strlen(buf), buf_size - strlen(buf),
942 ", %d kb/s", bitrate / 1000);
946 unsigned avcodec_version( void )
948 return LIBAVCODEC_VERSION_INT;
951 const char *avcodec_configuration(void)
953 return FFMPEG_CONFIGURATION;
956 const char *avcodec_license(void)
958 #define LICENSE_PREFIX "libavcodec license: "
959 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
962 void avcodec_init(void)
964 static int initialized = 0;
966 if (initialized != 0)
970 dsputil_static_init();
973 void avcodec_flush_buffers(AVCodecContext *avctx)
975 if(avctx->codec->flush)
976 avctx->codec->flush(avctx);
979 void avcodec_default_free_buffers(AVCodecContext *s){
982 if(s->internal_buffer==NULL) return;
984 if (s->internal_buffer_count)
985 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
986 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
987 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
989 av_freep(&buf->base[j]);
993 av_freep(&s->internal_buffer);
995 s->internal_buffer_count=0;
998 char av_get_pict_type_char(int pict_type){
1000 case FF_I_TYPE: return 'I';
1001 case FF_P_TYPE: return 'P';
1002 case FF_B_TYPE: return 'B';
1003 case FF_S_TYPE: return 'S';
1004 case FF_SI_TYPE:return 'i';
1005 case FF_SP_TYPE:return 'p';
1006 case FF_BI_TYPE:return 'b';
1007 default: return '?';
1011 int av_get_bits_per_sample(enum CodecID codec_id){
1013 case CODEC_ID_ADPCM_SBPRO_2:
1015 case CODEC_ID_ADPCM_SBPRO_3:
1017 case CODEC_ID_ADPCM_SBPRO_4:
1018 case CODEC_ID_ADPCM_CT:
1019 case CODEC_ID_ADPCM_IMA_WAV:
1020 case CODEC_ID_ADPCM_MS:
1021 case CODEC_ID_ADPCM_YAMAHA:
1023 case CODEC_ID_PCM_ALAW:
1024 case CODEC_ID_PCM_MULAW:
1025 case CODEC_ID_PCM_S8:
1026 case CODEC_ID_PCM_U8:
1027 case CODEC_ID_PCM_ZORK:
1029 case CODEC_ID_PCM_S16BE:
1030 case CODEC_ID_PCM_S16LE:
1031 case CODEC_ID_PCM_S16LE_PLANAR:
1032 case CODEC_ID_PCM_U16BE:
1033 case CODEC_ID_PCM_U16LE:
1035 case CODEC_ID_PCM_S24DAUD:
1036 case CODEC_ID_PCM_S24BE:
1037 case CODEC_ID_PCM_S24LE:
1038 case CODEC_ID_PCM_U24BE:
1039 case CODEC_ID_PCM_U24LE:
1041 case CODEC_ID_PCM_S32BE:
1042 case CODEC_ID_PCM_S32LE:
1043 case CODEC_ID_PCM_U32BE:
1044 case CODEC_ID_PCM_U32LE:
1045 case CODEC_ID_PCM_F32BE:
1046 case CODEC_ID_PCM_F32LE:
1048 case CODEC_ID_PCM_F64BE:
1049 case CODEC_ID_PCM_F64LE:
1056 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1057 switch (sample_fmt) {
1060 case SAMPLE_FMT_S16:
1062 case SAMPLE_FMT_S32:
1063 case SAMPLE_FMT_FLT:
1065 case SAMPLE_FMT_DBL:
1073 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1074 s->thread_count = thread_count;
1079 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1093 #if LIBAVCODEC_VERSION_MAJOR < 53
1094 #include "libavcore/parseutils.h"
1096 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1098 return av_parse_video_size(width_ptr, height_ptr, str);
1101 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1103 return av_parse_video_rate(frame_rate, arg);
1107 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1109 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1113 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1115 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1116 "version to the newest one from SVN. If the problem still "
1117 "occurs, it means that your file has a feature which has not "
1118 "been implemented.", feature);
1120 av_log_ask_for_sample(avc, NULL);
1122 av_log(avc, AV_LOG_WARNING, "\n");
1125 void av_log_ask_for_sample(void *avc, const char *msg)
1128 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1129 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1130 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1131 "and contact the ffmpeg-devel mailing list.\n");
1134 static AVHWAccel *first_hwaccel = NULL;
1136 void av_register_hwaccel(AVHWAccel *hwaccel)
1138 AVHWAccel **p = &first_hwaccel;
1142 hwaccel->next = NULL;
1145 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1147 return hwaccel ? hwaccel->next : first_hwaccel;
1150 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1152 AVHWAccel *hwaccel=NULL;
1154 while((hwaccel= av_hwaccel_next(hwaccel))){
1155 if ( hwaccel->id == codec_id
1156 && hwaccel->pix_fmt == pix_fmt)
1162 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1164 if (ff_lockmgr_cb) {
1165 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1171 if (ff_lockmgr_cb) {
1172 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1178 unsigned int ff_toupper4(unsigned int x)
1180 return toupper( x &0xFF)
1181 + (toupper((x>>8 )&0xFF)<<8 )
1182 + (toupper((x>>16)&0xFF)<<16)
1183 + (toupper((x>>24)&0xFF)<<24);