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
24 * @file libavcodec/utils.c
28 /* needed for mkstemp() */
29 #define _XOPEN_SOURCE 600
31 #include "libavutil/avstring.h"
32 #include "libavutil/integer.h"
33 #include "libavutil/crc.h"
37 #include "imgconvert.h"
38 #include "audioconvert.h"
48 static int volatile entangled_thread_counter=0;
49 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
50 static void *codec_mutex;
52 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
57 *size= FFMAX(17*min_size/16 + 32, min_size);
59 ptr= av_realloc(ptr, *size);
60 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
66 void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
71 *size= FFMAX(17*min_size/16 + 32, min_size);
73 *p = av_malloc(*size);
77 /* encoder management */
78 static AVCodec *first_avcodec = NULL;
80 AVCodec *av_codec_next(AVCodec *c){
82 else return first_avcodec;
85 void avcodec_register(AVCodec *codec)
90 while (*p != NULL) p = &(*p)->next;
95 #if LIBAVCODEC_VERSION_MAJOR < 53
96 void register_avcodec(AVCodec *codec)
98 avcodec_register(codec);
102 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
103 s->coded_width = width;
104 s->coded_height= height;
105 s->width = -((-width )>>s->lowres);
106 s->height= -((-height)>>s->lowres);
109 typedef struct InternalBuffer{
115 enum PixelFormat pix_fmt;
118 #define INTERNAL_BUFFER_SIZE 32
120 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
125 case PIX_FMT_YUV420P:
126 case PIX_FMT_YUYV422:
127 case PIX_FMT_UYVY422:
128 case PIX_FMT_YUV422P:
129 case PIX_FMT_YUV444P:
131 case PIX_FMT_GRAY16BE:
132 case PIX_FMT_GRAY16LE:
133 case PIX_FMT_YUVJ420P:
134 case PIX_FMT_YUVJ422P:
135 case PIX_FMT_YUVJ444P:
136 case PIX_FMT_YUVA420P:
137 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
139 if(s->codec_id == CODEC_ID_MPEG2VIDEO)
140 h_align= 32; // interlaced is rounded up to 2 MBs
142 case PIX_FMT_YUV411P:
143 case PIX_FMT_UYYVYY411:
147 case PIX_FMT_YUV410P:
148 if(s->codec_id == CODEC_ID_SVQ1){
153 if(s->codec_id == CODEC_ID_RPZA){
160 if(s->codec_id == CODEC_ID_SMC){
166 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
177 *width = FFALIGN(*width , w_align);
178 *height= FFALIGN(*height, h_align);
179 if(s->codec_id == CODEC_ID_H264)
180 *height+=2; // some of the optimized chroma MC reads one line too much
183 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
184 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
187 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
191 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
198 if(pic->data[0]!=NULL) {
199 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
202 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
203 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
207 if(avcodec_check_dimensions(s,w,h))
210 if(s->internal_buffer==NULL){
211 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
214 s->internal_buffer= av_fast_realloc(
216 &s->internal_buffer_size,
217 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
221 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
222 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
225 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
227 av_freep(&buf->base[i]);
233 pic->age= *picture_number - buf->last_pic_num;
234 buf->last_pic_num= *picture_number;
236 int h_chroma_shift, v_chroma_shift;
243 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
245 avcodec_align_dimensions(s, &w, &h);
247 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
253 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
254 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
255 ff_fill_linesize(&picture, s->pix_fmt, w);
256 // increase alignment of w for next try (rhs gives the lowest bit set in w)
261 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
262 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
263 //picture size unneccessarily in some cases. The solution here is not
264 //pretty and better ideas are welcome!
266 if(s->codec_id == CODEC_ID_SVQ1)
270 stride_align[i] = STRIDE_ALIGN;
271 unaligned |= picture.linesize[i] % stride_align[i];
275 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
279 for (i=0; i<3 && picture.data[i+1]; i++)
280 size[i] = picture.data[i+1] - picture.data[i];
281 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
283 buf->last_pic_num= -256*256*256*64;
284 memset(buf->base, 0, sizeof(buf->base));
285 memset(buf->data, 0, sizeof(buf->data));
287 for(i=0; i<4 && size[i]; i++){
288 const int h_shift= i==0 ? 0 : h_chroma_shift;
289 const int v_shift= i==0 ? 0 : v_chroma_shift;
291 buf->linesize[i]= picture.linesize[i];
293 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
294 if(buf->base[i]==NULL) return -1;
295 memset(buf->base[i], 128, size[i]);
297 // no edge if EDEG EMU or not planar YUV
298 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
299 buf->data[i] = buf->base[i];
301 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
303 if(size[1] && !size[2])
304 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
305 buf->width = s->width;
306 buf->height = s->height;
307 buf->pix_fmt= s->pix_fmt;
308 pic->age= 256*256*256*64;
310 pic->type= FF_BUFFER_TYPE_INTERNAL;
313 pic->base[i]= buf->base[i];
314 pic->data[i]= buf->data[i];
315 pic->linesize[i]= buf->linesize[i];
317 s->internal_buffer_count++;
319 pic->reordered_opaque= s->reordered_opaque;
321 if(s->debug&FF_DEBUG_BUFFERS)
322 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
327 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
329 InternalBuffer *buf, *last;
331 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
332 assert(s->internal_buffer_count);
334 buf = NULL; /* avoids warning */
335 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
336 buf= &((InternalBuffer*)s->internal_buffer)[i];
337 if(buf->data[0] == pic->data[0])
340 assert(i < s->internal_buffer_count);
341 s->internal_buffer_count--;
342 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
344 FFSWAP(InternalBuffer, *buf, *last);
348 // pic->base[i]=NULL;
350 //printf("R%X\n", pic->opaque);
352 if(s->debug&FF_DEBUG_BUFFERS)
353 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
356 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
360 /* If no picture return a new buffer */
361 if(pic->data[0] == NULL) {
362 /* We will copy from buffer, so must be readable */
363 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
364 return s->get_buffer(s, pic);
367 /* If internal buffer type return the same buffer */
368 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
372 * Not internal type and reget_buffer not overridden, emulate cr buffer
375 for(i = 0; i < 4; i++)
376 pic->data[i] = pic->base[i] = NULL;
378 /* Allocate new frame */
379 if (s->get_buffer(s, pic))
381 /* Copy image data from old buffer to new buffer */
382 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
384 s->release_buffer(s, &temp_pic); // Release old frame
388 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
391 for(i=0; i<count; i++){
392 int r= func(c, (char*)arg + i*size);
398 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
401 for(i=0; i<count; i++){
402 int r= func(c, arg, i, 0);
408 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
409 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
414 void avcodec_get_frame_defaults(AVFrame *pic){
415 memset(pic, 0, sizeof(AVFrame));
417 pic->pts= AV_NOPTS_VALUE;
421 AVFrame *avcodec_alloc_frame(void){
422 AVFrame *pic= av_malloc(sizeof(AVFrame));
424 if(pic==NULL) return NULL;
426 avcodec_get_frame_defaults(pic);
431 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
435 /* If there is a user-supplied mutex locking routine, call it. */
437 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
441 entangled_thread_counter++;
442 if(entangled_thread_counter != 1){
443 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
447 if(avctx->codec || !codec)
450 if (codec->priv_data_size > 0) {
451 avctx->priv_data = av_mallocz(codec->priv_data_size);
452 if (!avctx->priv_data) {
453 ret = AVERROR(ENOMEM);
457 avctx->priv_data = NULL;
460 if(avctx->coded_width && avctx->coded_height)
461 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
462 else if(avctx->width && avctx->height)
463 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
465 #define SANE_NB_CHANNELS 128U
466 if (((avctx->coded_width || avctx->coded_height)
467 && avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height))
468 || avctx->channels > SANE_NB_CHANNELS) {
469 ret = AVERROR(EINVAL);
473 avctx->codec = codec;
474 if ((avctx->codec_type == CODEC_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
475 avctx->codec_id == CODEC_ID_NONE) {
476 avctx->codec_type = codec->type;
477 avctx->codec_id = codec->id;
479 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
480 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
483 avctx->frame_number = 0;
484 if(avctx->codec->init){
485 ret = avctx->codec->init(avctx);
492 entangled_thread_counter--;
494 /* Release any user-supplied mutex. */
496 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
500 av_freep(&avctx->priv_data);
505 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
506 const short *samples)
508 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
509 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
512 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
513 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
514 avctx->frame_number++;
520 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
523 if(buf_size < FF_MIN_BUFFER_SIZE){
524 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
527 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
529 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
530 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
531 avctx->frame_number++;
532 emms_c(); //needed to avoid an emms_c() call before every return;
539 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
540 const AVSubtitle *sub)
543 if(sub->start_display_time) {
544 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
547 if(sub->num_rects == 0 || !sub->rects)
549 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
550 avctx->frame_number++;
554 #if LIBAVCODEC_VERSION_MAJOR < 53
555 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
556 int *got_picture_ptr,
557 const uint8_t *buf, int buf_size)
560 av_init_packet(&avpkt);
562 avpkt.size = buf_size;
563 // HACK for CorePNG to decode as normal PNG by default
564 avpkt.flags = AV_PKT_FLAG_KEY;
566 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
570 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
571 int *got_picture_ptr,
577 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
579 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
580 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
583 emms_c(); //needed to avoid an emms_c() call before every return;
585 if (*got_picture_ptr)
586 avctx->frame_number++;
593 #if LIBAVCODEC_VERSION_MAJOR < 53
594 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
596 const uint8_t *buf, int buf_size)
599 av_init_packet(&avpkt);
601 avpkt.size = buf_size;
603 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
607 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
613 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
614 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
615 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
616 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
619 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
620 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
621 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
625 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
626 avctx->frame_number++;
634 #if LIBAVCODEC_VERSION_MAJOR < 53
635 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
637 const uint8_t *buf, int buf_size)
640 av_init_packet(&avpkt);
642 avpkt.size = buf_size;
644 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
648 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
655 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
657 avctx->frame_number++;
661 int avcodec_close(AVCodecContext *avctx)
663 /* If there is a user-supplied mutex locking routine, call it. */
665 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
669 entangled_thread_counter++;
670 if(entangled_thread_counter != 1){
671 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
672 entangled_thread_counter--;
676 if (HAVE_THREADS && avctx->thread_opaque)
677 avcodec_thread_free(avctx);
678 if (avctx->codec && avctx->codec->close)
679 avctx->codec->close(avctx);
680 avcodec_default_free_buffers(avctx);
681 av_freep(&avctx->priv_data);
683 entangled_thread_counter--;
685 /* Release any user-supplied mutex. */
687 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
692 AVCodec *avcodec_find_encoder(enum CodecID id)
697 if (p->encode != NULL && p->id == id)
704 AVCodec *avcodec_find_encoder_by_name(const char *name)
711 if (p->encode != NULL && strcmp(name,p->name) == 0)
718 AVCodec *avcodec_find_decoder(enum CodecID id)
723 if (p->decode != NULL && p->id == id)
730 AVCodec *avcodec_find_decoder_by_name(const char *name)
737 if (p->decode != NULL && strcmp(name,p->name) == 0)
744 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
746 const char *codec_name;
750 AVRational display_aspect_ratio;
753 p = avcodec_find_encoder(enc->codec_id);
755 p = avcodec_find_decoder(enc->codec_id);
758 codec_name = p->name;
759 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
760 /* fake mpeg2 transport stream codec (currently not
762 codec_name = "mpeg2ts";
763 } else if (enc->codec_name[0] != '\0') {
764 codec_name = enc->codec_name;
766 /* output avi tags */
767 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
768 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
769 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
770 enc->codec_tag & 0xff,
771 (enc->codec_tag >> 8) & 0xff,
772 (enc->codec_tag >> 16) & 0xff,
773 (enc->codec_tag >> 24) & 0xff,
776 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
781 switch(enc->codec_type) {
782 case CODEC_TYPE_VIDEO:
783 snprintf(buf, buf_size,
785 codec_name, enc->mb_decision ? " (hq)" : "");
786 if (enc->pix_fmt != PIX_FMT_NONE) {
787 snprintf(buf + strlen(buf), buf_size - strlen(buf),
789 avcodec_get_pix_fmt_name(enc->pix_fmt));
792 snprintf(buf + strlen(buf), buf_size - strlen(buf),
794 enc->width, enc->height);
795 if (enc->sample_aspect_ratio.num) {
796 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
797 enc->width*enc->sample_aspect_ratio.num,
798 enc->height*enc->sample_aspect_ratio.den,
800 snprintf(buf + strlen(buf), buf_size - strlen(buf),
801 " [PAR %d:%d DAR %d:%d]",
802 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
803 display_aspect_ratio.num, display_aspect_ratio.den);
805 if(av_log_get_level() >= AV_LOG_DEBUG){
806 int g= av_gcd(enc->time_base.num, enc->time_base.den);
807 snprintf(buf + strlen(buf), buf_size - strlen(buf),
809 enc->time_base.num/g, enc->time_base.den/g);
813 snprintf(buf + strlen(buf), buf_size - strlen(buf),
814 ", q=%d-%d", enc->qmin, enc->qmax);
816 bitrate = enc->bit_rate;
818 case CODEC_TYPE_AUDIO:
819 snprintf(buf, buf_size,
822 if (enc->sample_rate) {
823 snprintf(buf + strlen(buf), buf_size - strlen(buf),
824 ", %d Hz", enc->sample_rate);
826 av_strlcat(buf, ", ", buf_size);
827 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
828 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
829 snprintf(buf + strlen(buf), buf_size - strlen(buf),
830 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
833 /* for PCM codecs, compute bitrate directly */
834 switch(enc->codec_id) {
835 case CODEC_ID_PCM_F64BE:
836 case CODEC_ID_PCM_F64LE:
837 bitrate = enc->sample_rate * enc->channels * 64;
839 case CODEC_ID_PCM_S32LE:
840 case CODEC_ID_PCM_S32BE:
841 case CODEC_ID_PCM_U32LE:
842 case CODEC_ID_PCM_U32BE:
843 case CODEC_ID_PCM_F32BE:
844 case CODEC_ID_PCM_F32LE:
845 bitrate = enc->sample_rate * enc->channels * 32;
847 case CODEC_ID_PCM_S24LE:
848 case CODEC_ID_PCM_S24BE:
849 case CODEC_ID_PCM_U24LE:
850 case CODEC_ID_PCM_U24BE:
851 case CODEC_ID_PCM_S24DAUD:
852 bitrate = enc->sample_rate * enc->channels * 24;
854 case CODEC_ID_PCM_S16LE:
855 case CODEC_ID_PCM_S16BE:
856 case CODEC_ID_PCM_S16LE_PLANAR:
857 case CODEC_ID_PCM_U16LE:
858 case CODEC_ID_PCM_U16BE:
859 bitrate = enc->sample_rate * enc->channels * 16;
861 case CODEC_ID_PCM_S8:
862 case CODEC_ID_PCM_U8:
863 case CODEC_ID_PCM_ALAW:
864 case CODEC_ID_PCM_MULAW:
865 case CODEC_ID_PCM_ZORK:
866 bitrate = enc->sample_rate * enc->channels * 8;
869 bitrate = enc->bit_rate;
873 case CODEC_TYPE_DATA:
874 snprintf(buf, buf_size, "Data: %s", codec_name);
875 bitrate = enc->bit_rate;
877 case CODEC_TYPE_SUBTITLE:
878 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
879 bitrate = enc->bit_rate;
881 case CODEC_TYPE_ATTACHMENT:
882 snprintf(buf, buf_size, "Attachment: %s", codec_name);
883 bitrate = enc->bit_rate;
886 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
890 if (enc->flags & CODEC_FLAG_PASS1)
891 snprintf(buf + strlen(buf), buf_size - strlen(buf),
893 if (enc->flags & CODEC_FLAG_PASS2)
894 snprintf(buf + strlen(buf), buf_size - strlen(buf),
898 snprintf(buf + strlen(buf), buf_size - strlen(buf),
899 ", %d kb/s", bitrate / 1000);
903 unsigned avcodec_version( void )
905 return LIBAVCODEC_VERSION_INT;
908 void avcodec_init(void)
910 static int initialized = 0;
912 if (initialized != 0)
916 dsputil_static_init();
919 void avcodec_flush_buffers(AVCodecContext *avctx)
921 if(avctx->codec->flush)
922 avctx->codec->flush(avctx);
925 void avcodec_default_free_buffers(AVCodecContext *s){
928 if(s->internal_buffer==NULL) return;
930 if (s->internal_buffer_count)
931 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
932 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
933 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
935 av_freep(&buf->base[j]);
939 av_freep(&s->internal_buffer);
941 s->internal_buffer_count=0;
944 char av_get_pict_type_char(int pict_type){
946 case FF_I_TYPE: return 'I';
947 case FF_P_TYPE: return 'P';
948 case FF_B_TYPE: return 'B';
949 case FF_S_TYPE: return 'S';
950 case FF_SI_TYPE:return 'i';
951 case FF_SP_TYPE:return 'p';
952 case FF_BI_TYPE:return 'b';
957 int av_get_bits_per_sample(enum CodecID codec_id){
959 case CODEC_ID_ADPCM_SBPRO_2:
961 case CODEC_ID_ADPCM_SBPRO_3:
963 case CODEC_ID_ADPCM_SBPRO_4:
964 case CODEC_ID_ADPCM_CT:
966 case CODEC_ID_PCM_ALAW:
967 case CODEC_ID_PCM_MULAW:
968 case CODEC_ID_PCM_S8:
969 case CODEC_ID_PCM_U8:
970 case CODEC_ID_PCM_ZORK:
972 case CODEC_ID_PCM_S16BE:
973 case CODEC_ID_PCM_S16LE:
974 case CODEC_ID_PCM_S16LE_PLANAR:
975 case CODEC_ID_PCM_U16BE:
976 case CODEC_ID_PCM_U16LE:
978 case CODEC_ID_PCM_S24DAUD:
979 case CODEC_ID_PCM_S24BE:
980 case CODEC_ID_PCM_S24LE:
981 case CODEC_ID_PCM_U24BE:
982 case CODEC_ID_PCM_U24LE:
984 case CODEC_ID_PCM_S32BE:
985 case CODEC_ID_PCM_S32LE:
986 case CODEC_ID_PCM_U32BE:
987 case CODEC_ID_PCM_U32LE:
988 case CODEC_ID_PCM_F32BE:
989 case CODEC_ID_PCM_F32LE:
991 case CODEC_ID_PCM_F64BE:
992 case CODEC_ID_PCM_F64LE:
999 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
1000 switch (sample_fmt) {
1003 case SAMPLE_FMT_S16:
1005 case SAMPLE_FMT_S32:
1006 case SAMPLE_FMT_FLT:
1008 case SAMPLE_FMT_DBL:
1016 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1017 s->thread_count = thread_count;
1022 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1036 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1037 * Also, tries to create file in /tmp first, if possible.
1038 * *prefix can be a character constant; *filename will be allocated internally.
1039 * Returns file descriptor of opened file (or -1 on error)
1040 * and opened file name in **filename. */
1041 int av_tempfile(char *prefix, char **filename) {
1044 *filename = tempnam(".", prefix);
1046 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1047 *filename = av_malloc(len);
1049 /* -----common section-----*/
1050 if (*filename == NULL) {
1051 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1055 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1057 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1058 fd = mkstemp(*filename);
1060 snprintf(*filename, len, "./%sXXXXXX", prefix);
1061 fd = mkstemp(*filename);
1064 /* -----common section-----*/
1066 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1069 return fd; /* success */
1075 } VideoFrameSizeAbbr;
1079 int rate_num, rate_den;
1080 } VideoFrameRateAbbr;
1082 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1083 { "ntsc", 720, 480 },
1084 { "pal", 720, 576 },
1085 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1086 { "qpal", 352, 288 }, /* VCD compliant PAL */
1087 { "sntsc", 640, 480 }, /* square pixel NTSC */
1088 { "spal", 768, 576 }, /* square pixel PAL */
1089 { "film", 352, 240 },
1090 { "ntsc-film", 352, 240 },
1091 { "sqcif", 128, 96 },
1092 { "qcif", 176, 144 },
1093 { "cif", 352, 288 },
1094 { "4cif", 704, 576 },
1095 { "16cif", 1408,1152 },
1096 { "qqvga", 160, 120 },
1097 { "qvga", 320, 240 },
1098 { "vga", 640, 480 },
1099 { "svga", 800, 600 },
1100 { "xga", 1024, 768 },
1101 { "uxga", 1600,1200 },
1102 { "qxga", 2048,1536 },
1103 { "sxga", 1280,1024 },
1104 { "qsxga", 2560,2048 },
1105 { "hsxga", 5120,4096 },
1106 { "wvga", 852, 480 },
1107 { "wxga", 1366, 768 },
1108 { "wsxga", 1600,1024 },
1109 { "wuxga", 1920,1200 },
1110 { "woxga", 2560,1600 },
1111 { "wqsxga", 3200,2048 },
1112 { "wquxga", 3840,2400 },
1113 { "whsxga", 6400,4096 },
1114 { "whuxga", 7680,4800 },
1115 { "cga", 320, 200 },
1116 { "ega", 640, 350 },
1117 { "hd480", 852, 480 },
1118 { "hd720", 1280, 720 },
1119 { "hd1080", 1920,1080 },
1122 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1123 { "ntsc", 30000, 1001 },
1125 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1126 { "qpal", 25, 1 }, /* VCD compliant PAL */
1127 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1128 { "spal", 25, 1 }, /* square pixel PAL */
1130 { "ntsc-film", 24000, 1001 },
1133 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1136 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1138 int frame_width = 0, frame_height = 0;
1141 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1142 frame_width = video_frame_size_abbrs[i].width;
1143 frame_height = video_frame_size_abbrs[i].height;
1149 frame_width = strtol(p, &p, 10);
1152 frame_height = strtol(p, &p, 10);
1154 if (frame_width <= 0 || frame_height <= 0)
1156 *width_ptr = frame_width;
1157 *height_ptr = frame_height;
1161 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1164 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1167 /* First, we check our abbreviation table */
1168 for (i = 0; i < n; ++i)
1169 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1170 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1171 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1175 /* Then, we try to parse it as fraction */
1176 cp = strchr(arg, '/');
1178 cp = strchr(arg, ':');
1181 frame_rate->num = strtol(arg, &cpp, 10);
1182 if (cpp != arg || cpp == cp)
1183 frame_rate->den = strtol(cp+1, &cpp, 10);
1185 frame_rate->num = 0;
1188 /* Finally we give up and parse it as double */
1189 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1190 frame_rate->den = time_base.den;
1191 frame_rate->num = time_base.num;
1193 if (!frame_rate->num || !frame_rate->den)
1199 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1201 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1202 "version to the newest one from SVN. If the problem still "
1203 "occurs, it means that your file has a feature which has not "
1204 "been implemented.", feature);
1206 av_log_ask_for_sample(avc, NULL);
1208 av_log(avc, AV_LOG_WARNING, "\n");
1211 void av_log_ask_for_sample(void *avc, const char *msg)
1214 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1215 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1216 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1217 "and contact the ffmpeg-devel mailing list.\n");
1220 static AVHWAccel *first_hwaccel = NULL;
1222 void av_register_hwaccel(AVHWAccel *hwaccel)
1224 AVHWAccel **p = &first_hwaccel;
1228 hwaccel->next = NULL;
1231 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1233 return hwaccel ? hwaccel->next : first_hwaccel;
1236 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1238 AVHWAccel *hwaccel=NULL;
1240 while((hwaccel= av_hwaccel_next(hwaccel))){
1241 if ( hwaccel->id == codec_id
1242 && hwaccel->pix_fmt == pix_fmt)
1248 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1250 if (ff_lockmgr_cb) {
1251 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1257 if (ff_lockmgr_cb) {
1258 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))