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 "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, 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)){
264 if(s->active_thread_type&FF_THREAD_FRAME) {
265 av_log_missing_feature(s, "Width/height changing with frame threads is", 0);
270 av_freep(&buf->base[i]);
276 pic->age= *picture_number - buf->last_pic_num;
277 buf->last_pic_num= *picture_number;
279 int h_chroma_shift, v_chroma_shift;
286 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
288 avcodec_align_dimensions2(s, &w, &h, stride_align);
290 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
296 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
297 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
298 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w);
299 // increase alignment of w for next try (rhs gives the lowest bit set in w)
304 unaligned |= picture.linesize[i] % stride_align[i];
308 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize);
312 for (i=0; i<3 && picture.data[i+1]; i++)
313 size[i] = picture.data[i+1] - picture.data[i];
314 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
316 buf->last_pic_num= -256*256*256*64;
317 memset(buf->base, 0, sizeof(buf->base));
318 memset(buf->data, 0, sizeof(buf->data));
320 for(i=0; i<4 && size[i]; i++){
321 const int h_shift= i==0 ? 0 : h_chroma_shift;
322 const int v_shift= i==0 ? 0 : v_chroma_shift;
324 buf->linesize[i]= picture.linesize[i];
326 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
327 if(buf->base[i]==NULL) return -1;
328 memset(buf->base[i], 128, size[i]);
330 // no edge if EDGE EMU or not planar YUV
331 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
332 buf->data[i] = buf->base[i];
334 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
336 if(size[1] && !size[2])
337 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt);
338 buf->width = s->width;
339 buf->height = s->height;
340 buf->pix_fmt= s->pix_fmt;
341 pic->age= 256*256*256*64;
343 pic->type= FF_BUFFER_TYPE_INTERNAL;
346 pic->base[i]= buf->base[i];
347 pic->data[i]= buf->data[i];
348 pic->linesize[i]= buf->linesize[i];
350 s->internal_buffer_count++;
352 if(s->pkt) pic->pkt_pts= s->pkt->pts;
353 else pic->pkt_pts= AV_NOPTS_VALUE;
354 pic->reordered_opaque= s->reordered_opaque;
356 if(s->debug&FF_DEBUG_BUFFERS)
357 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
362 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
364 InternalBuffer *buf, *last;
366 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
367 assert(s->internal_buffer_count);
369 buf = NULL; /* avoids warning */
370 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
371 buf= &((InternalBuffer*)s->internal_buffer)[i];
372 if(buf->data[0] == pic->data[0])
375 assert(i < s->internal_buffer_count);
376 s->internal_buffer_count--;
377 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
379 FFSWAP(InternalBuffer, *buf, *last);
383 // pic->base[i]=NULL;
385 //printf("R%X\n", pic->opaque);
387 if(s->debug&FF_DEBUG_BUFFERS)
388 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
391 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
395 /* If no picture return a new buffer */
396 if(pic->data[0] == NULL) {
397 /* We will copy from buffer, so must be readable */
398 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
399 return s->get_buffer(s, pic);
402 /* If internal buffer type return the same buffer */
403 if(pic->type == FF_BUFFER_TYPE_INTERNAL) {
404 if(s->pkt) pic->pkt_pts= s->pkt->pts;
405 else pic->pkt_pts= AV_NOPTS_VALUE;
406 pic->reordered_opaque= s->reordered_opaque;
411 * Not internal type and reget_buffer not overridden, emulate cr buffer
414 for(i = 0; i < 4; i++)
415 pic->data[i] = pic->base[i] = NULL;
417 /* Allocate new frame */
418 if (s->get_buffer(s, pic))
420 /* Copy image data from old buffer to new buffer */
421 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
423 s->release_buffer(s, &temp_pic); // Release old frame
427 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
430 for(i=0; i<count; i++){
431 int r= func(c, (char*)arg + i*size);
437 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
440 for(i=0; i<count; i++){
441 int r= func(c, arg, i, 0);
447 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
448 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
453 void avcodec_get_frame_defaults(AVFrame *pic){
454 memset(pic, 0, sizeof(AVFrame));
456 pic->pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
460 AVFrame *avcodec_alloc_frame(void){
461 AVFrame *pic= av_malloc(sizeof(AVFrame));
463 if(pic==NULL) return NULL;
465 avcodec_get_frame_defaults(pic);
470 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
474 /* If there is a user-supplied mutex locking routine, call it. */
476 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
480 entangled_thread_counter++;
481 if(entangled_thread_counter != 1){
482 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
486 if(avctx->codec || !codec)
489 if (codec->priv_data_size > 0) {
490 if(!avctx->priv_data){
491 avctx->priv_data = av_mallocz(codec->priv_data_size);
492 if (!avctx->priv_data) {
493 ret = AVERROR(ENOMEM);
496 if(codec->priv_class){ //this can be droped once all user apps use avcodec_get_context_defaults3()
497 *(AVClass**)avctx->priv_data= codec->priv_class;
498 av_opt_set_defaults(avctx->priv_data);
502 avctx->priv_data = NULL;
505 if(avctx->coded_width && avctx->coded_height)
506 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
507 else if(avctx->width && avctx->height)
508 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
510 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
511 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
512 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
513 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
514 avcodec_set_dimensions(avctx, 0, 0);
517 /* if the decoder init function was already called previously,
518 free the already allocated subtitle_header before overwriting it */
520 av_freep(&avctx->subtitle_header);
522 #define SANE_NB_CHANNELS 128U
523 if (avctx->channels > SANE_NB_CHANNELS) {
524 ret = AVERROR(EINVAL);
528 avctx->codec = codec;
529 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
530 avctx->codec_id == CODEC_ID_NONE) {
531 avctx->codec_type = codec->type;
532 avctx->codec_id = codec->id;
534 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
535 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
536 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
539 avctx->frame_number = 0;
541 if (HAVE_THREADS && !avctx->thread_opaque) {
542 ret = ff_thread_init(avctx, avctx->thread_count);
548 if (avctx->codec->max_lowres < avctx->lowres) {
549 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
550 avctx->codec->max_lowres);
553 if (avctx->codec->sample_fmts && avctx->codec->encode) {
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");
564 avctx->pts_correction_num_faulty_pts =
565 avctx->pts_correction_num_faulty_dts = 0;
566 avctx->pts_correction_last_pts =
567 avctx->pts_correction_last_dts = INT64_MIN;
569 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){
570 ret = avctx->codec->init(avctx);
577 entangled_thread_counter--;
579 /* Release any user-supplied mutex. */
581 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
585 av_freep(&avctx->priv_data);
590 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
591 const short *samples)
593 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
594 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
597 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
598 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
599 avctx->frame_number++;
605 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
608 if(buf_size < FF_MIN_BUFFER_SIZE){
609 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
612 if(av_image_check_size(avctx->width, avctx->height, 0, avctx))
614 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
615 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
616 avctx->frame_number++;
617 emms_c(); //needed to avoid an emms_c() call before every return;
624 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
625 const AVSubtitle *sub)
628 if(sub->start_display_time) {
629 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
632 if(sub->num_rects == 0 || !sub->rects)
634 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
635 avctx->frame_number++;
640 * Attempt to guess proper monotonic timestamps for decoded video frames
641 * which might have incorrect times. Input timestamps may wrap around, in
642 * which case the output will as well.
644 * @param pts the pts field of the decoded AVPacket, as passed through
646 * @param dts the dts field of the decoded AVPacket
647 * @return one of the input values, may be AV_NOPTS_VALUE
649 static int64_t guess_correct_pts(AVCodecContext *ctx,
650 int64_t reordered_pts, int64_t dts)
652 int64_t pts = AV_NOPTS_VALUE;
654 if (dts != AV_NOPTS_VALUE) {
655 ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
656 ctx->pts_correction_last_dts = dts;
658 if (reordered_pts != AV_NOPTS_VALUE) {
659 ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
660 ctx->pts_correction_last_pts = reordered_pts;
662 if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
663 && reordered_pts != AV_NOPTS_VALUE)
673 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
674 int *got_picture_ptr,
675 const uint8_t *buf, int buf_size)
678 av_init_packet(&avpkt);
680 avpkt.size = buf_size;
681 // HACK for CorePNG to decode as normal PNG by default
682 avpkt.flags = AV_PKT_FLAG_KEY;
684 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
688 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
689 int *got_picture_ptr,
695 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
700 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){
701 if (HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
702 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
705 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
707 picture->pkt_dts= avpkt->dts;
710 emms_c(); //needed to avoid an emms_c() call before every return;
713 if (*got_picture_ptr){
714 avctx->frame_number++;
715 picture->best_effort_timestamp = guess_correct_pts(avctx,
726 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
728 const uint8_t *buf, int buf_size)
731 av_init_packet(&avpkt);
733 avpkt.size = buf_size;
735 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
739 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
747 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
748 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
749 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
750 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
753 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
754 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
755 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
759 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
760 avctx->frame_number++;
768 #if FF_API_SUBTITLE_OLD
769 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
771 const uint8_t *buf, int buf_size)
774 av_init_packet(&avpkt);
776 avpkt.size = buf_size;
778 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
782 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
790 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
792 avctx->frame_number++;
796 void avsubtitle_free(AVSubtitle *sub)
800 for (i = 0; i < sub->num_rects; i++)
802 av_freep(&sub->rects[i]->pict.data[0]);
803 av_freep(&sub->rects[i]->pict.data[1]);
804 av_freep(&sub->rects[i]->pict.data[2]);
805 av_freep(&sub->rects[i]->pict.data[3]);
806 av_freep(&sub->rects[i]->text);
807 av_freep(&sub->rects[i]->ass);
808 av_freep(&sub->rects[i]);
811 av_freep(&sub->rects);
813 memset(sub, 0, sizeof(AVSubtitle));
816 av_cold int avcodec_close(AVCodecContext *avctx)
818 /* If there is a user-supplied mutex locking routine, call it. */
820 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
824 entangled_thread_counter++;
825 if(entangled_thread_counter != 1){
826 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
827 entangled_thread_counter--;
831 if (HAVE_THREADS && avctx->thread_opaque)
832 ff_thread_free(avctx);
833 if (avctx->codec && avctx->codec->close)
834 avctx->codec->close(avctx);
835 avcodec_default_free_buffers(avctx);
836 avctx->coded_frame = NULL;
837 av_freep(&avctx->priv_data);
838 if(avctx->codec && avctx->codec->encode)
839 av_freep(&avctx->extradata);
841 avctx->active_thread_type = 0;
842 entangled_thread_counter--;
844 /* Release any user-supplied mutex. */
846 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
851 AVCodec *avcodec_find_encoder(enum CodecID id)
853 AVCodec *p, *experimental=NULL;
856 if (p->encode != NULL && p->id == id) {
857 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
867 AVCodec *avcodec_find_encoder_by_name(const char *name)
874 if (p->encode != NULL && strcmp(name,p->name) == 0)
881 AVCodec *avcodec_find_decoder(enum CodecID id)
886 if (p->decode != NULL && p->id == id)
893 AVCodec *avcodec_find_decoder_by_name(const char *name)
900 if (p->decode != NULL && strcmp(name,p->name) == 0)
907 static int get_bit_rate(AVCodecContext *ctx)
912 switch(ctx->codec_type) {
913 case AVMEDIA_TYPE_VIDEO:
914 case AVMEDIA_TYPE_DATA:
915 case AVMEDIA_TYPE_SUBTITLE:
916 case AVMEDIA_TYPE_ATTACHMENT:
917 bit_rate = ctx->bit_rate;
919 case AVMEDIA_TYPE_AUDIO:
920 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
921 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
930 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
934 for (i = 0; i < 4; i++) {
935 len = snprintf(buf, buf_size,
936 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF);
938 buf_size = buf_size > len ? buf_size - len : 0;
945 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
947 const char *codec_name;
948 const char *profile = NULL;
952 AVRational display_aspect_ratio;
955 p = avcodec_find_encoder(enc->codec_id);
957 p = avcodec_find_decoder(enc->codec_id);
960 codec_name = p->name;
961 profile = av_get_profile_name(p, enc->profile);
962 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
963 /* fake mpeg2 transport stream codec (currently not
965 codec_name = "mpeg2ts";
966 } else if (enc->codec_name[0] != '\0') {
967 codec_name = enc->codec_name;
969 /* output avi tags */
971 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
972 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
976 switch(enc->codec_type) {
977 case AVMEDIA_TYPE_VIDEO:
978 snprintf(buf, buf_size,
980 codec_name, enc->mb_decision ? " (hq)" : "");
982 snprintf(buf + strlen(buf), buf_size - strlen(buf),
984 if (enc->pix_fmt != PIX_FMT_NONE) {
985 snprintf(buf + strlen(buf), buf_size - strlen(buf),
987 avcodec_get_pix_fmt_name(enc->pix_fmt));
990 snprintf(buf + strlen(buf), buf_size - strlen(buf),
992 enc->width, enc->height);
993 if (enc->sample_aspect_ratio.num) {
994 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
995 enc->width*enc->sample_aspect_ratio.num,
996 enc->height*enc->sample_aspect_ratio.den,
998 snprintf(buf + strlen(buf), buf_size - strlen(buf),
999 " [PAR %d:%d DAR %d:%d]",
1000 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
1001 display_aspect_ratio.num, display_aspect_ratio.den);
1003 if(av_log_get_level() >= AV_LOG_DEBUG){
1004 int g= av_gcd(enc->time_base.num, enc->time_base.den);
1005 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1007 enc->time_base.num/g, enc->time_base.den/g);
1011 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1012 ", q=%d-%d", enc->qmin, enc->qmax);
1015 case AVMEDIA_TYPE_AUDIO:
1016 snprintf(buf, buf_size,
1020 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1022 if (enc->sample_rate) {
1023 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1024 ", %d Hz", enc->sample_rate);
1026 av_strlcat(buf, ", ", buf_size);
1027 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1028 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1029 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1030 ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1033 case AVMEDIA_TYPE_DATA:
1034 snprintf(buf, buf_size, "Data: %s", codec_name);
1036 case AVMEDIA_TYPE_SUBTITLE:
1037 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1039 case AVMEDIA_TYPE_ATTACHMENT:
1040 snprintf(buf, buf_size, "Attachment: %s", codec_name);
1043 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1047 if (enc->flags & CODEC_FLAG_PASS1)
1048 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1050 if (enc->flags & CODEC_FLAG_PASS2)
1051 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1054 bitrate = get_bit_rate(enc);
1056 snprintf(buf + strlen(buf), buf_size - strlen(buf),
1057 ", %d kb/s", bitrate / 1000);
1061 const char *av_get_profile_name(const AVCodec *codec, int profile)
1064 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1067 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1068 if (p->profile == profile)
1074 unsigned avcodec_version( void )
1076 return LIBAVCODEC_VERSION_INT;
1079 const char *avcodec_configuration(void)
1081 return FFMPEG_CONFIGURATION;
1084 const char *avcodec_license(void)
1086 #define LICENSE_PREFIX "libavcodec license: "
1087 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1090 void avcodec_init(void)
1092 static int initialized = 0;
1094 if (initialized != 0)
1098 dsputil_static_init();
1101 void avcodec_flush_buffers(AVCodecContext *avctx)
1103 if(HAVE_PTHREADS && avctx->active_thread_type&FF_THREAD_FRAME)
1104 ff_thread_flush(avctx);
1105 if(avctx->codec->flush)
1106 avctx->codec->flush(avctx);
1109 void avcodec_default_free_buffers(AVCodecContext *s){
1112 if(s->internal_buffer==NULL) return;
1114 if (s->internal_buffer_count)
1115 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
1116 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
1117 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
1119 av_freep(&buf->base[j]);
1123 av_freep(&s->internal_buffer);
1125 s->internal_buffer_count=0;
1128 char av_get_pict_type_char(int pict_type){
1130 case FF_I_TYPE: return 'I';
1131 case FF_P_TYPE: return 'P';
1132 case FF_B_TYPE: return 'B';
1133 case FF_S_TYPE: return 'S';
1134 case FF_SI_TYPE:return 'i';
1135 case FF_SP_TYPE:return 'p';
1136 case FF_BI_TYPE:return 'b';
1137 default: return '?';
1141 int av_get_bits_per_sample(enum CodecID codec_id){
1143 case CODEC_ID_ADPCM_SBPRO_2:
1145 case CODEC_ID_ADPCM_SBPRO_3:
1147 case CODEC_ID_ADPCM_SBPRO_4:
1148 case CODEC_ID_ADPCM_CT:
1149 case CODEC_ID_ADPCM_IMA_WAV:
1150 case CODEC_ID_ADPCM_MS:
1151 case CODEC_ID_ADPCM_YAMAHA:
1153 case CODEC_ID_PCM_ALAW:
1154 case CODEC_ID_PCM_MULAW:
1155 case CODEC_ID_PCM_S8:
1156 case CODEC_ID_PCM_U8:
1157 case CODEC_ID_PCM_ZORK:
1159 case CODEC_ID_PCM_S16BE:
1160 case CODEC_ID_PCM_S16LE:
1161 case CODEC_ID_PCM_S16LE_PLANAR:
1162 case CODEC_ID_PCM_U16BE:
1163 case CODEC_ID_PCM_U16LE:
1165 case CODEC_ID_PCM_S24DAUD:
1166 case CODEC_ID_PCM_S24BE:
1167 case CODEC_ID_PCM_S24LE:
1168 case CODEC_ID_PCM_U24BE:
1169 case CODEC_ID_PCM_U24LE:
1171 case CODEC_ID_PCM_S32BE:
1172 case CODEC_ID_PCM_S32LE:
1173 case CODEC_ID_PCM_U32BE:
1174 case CODEC_ID_PCM_U32LE:
1175 case CODEC_ID_PCM_F32BE:
1176 case CODEC_ID_PCM_F32LE:
1178 case CODEC_ID_PCM_F64BE:
1179 case CODEC_ID_PCM_F64LE:
1186 #if FF_API_OLD_SAMPLE_FMT
1187 int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) {
1188 return av_get_bits_per_sample_fmt(sample_fmt);
1193 int ff_thread_init(AVCodecContext *s, int thread_count){
1194 s->thread_count = thread_count;
1199 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1213 #if LIBAVCODEC_VERSION_MAJOR < 53
1214 #include "libavutil/parseutils.h"
1216 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1218 return av_parse_video_size(width_ptr, height_ptr, str);
1221 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1223 return av_parse_video_rate(frame_rate, arg);
1227 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){
1229 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++);
1233 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1235 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1236 "version to the newest one from Git. If the problem still "
1237 "occurs, it means that your file has a feature which has not "
1238 "been implemented.", feature);
1240 av_log_ask_for_sample(avc, NULL);
1242 av_log(avc, AV_LOG_WARNING, "\n");
1245 void av_log_ask_for_sample(void *avc, const char *msg)
1248 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1249 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1250 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1251 "and contact the ffmpeg-devel mailing list.\n");
1254 static AVHWAccel *first_hwaccel = NULL;
1256 void av_register_hwaccel(AVHWAccel *hwaccel)
1258 AVHWAccel **p = &first_hwaccel;
1262 hwaccel->next = NULL;
1265 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1267 return hwaccel ? hwaccel->next : first_hwaccel;
1270 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1272 AVHWAccel *hwaccel=NULL;
1274 while((hwaccel= av_hwaccel_next(hwaccel))){
1275 if ( hwaccel->id == codec_id
1276 && hwaccel->pix_fmt == pix_fmt)
1282 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1284 if (ff_lockmgr_cb) {
1285 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1291 if (ff_lockmgr_cb) {
1292 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))
1298 unsigned int ff_toupper4(unsigned int x)
1300 return toupper( x &0xFF)
1301 + (toupper((x>>8 )&0xFF)<<8 )
1302 + (toupper((x>>16)&0xFF)<<16)
1303 + (toupper((x>>24)&0xFF)<<24);
1308 int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f)
1311 return avctx->get_buffer(avctx, f);
1314 void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f)
1316 f->owner->release_buffer(f->owner, f);
1319 void ff_thread_finish_setup(AVCodecContext *avctx)
1323 void ff_thread_report_progress(AVFrame *f, int progress, int field)
1327 void ff_thread_await_progress(AVFrame *f, int progress, int field)
1333 #if LIBAVCODEC_VERSION_MAJOR < 53
1335 int avcodec_thread_init(AVCodecContext *s, int thread_count)
1337 return ff_thread_init(s, thread_count);
1340 void avcodec_thread_free(AVCodecContext *s)