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_YUV440P:
130 case PIX_FMT_YUV444P:
132 case PIX_FMT_GRAY16BE:
133 case PIX_FMT_GRAY16LE:
134 case PIX_FMT_YUVJ420P:
135 case PIX_FMT_YUVJ422P:
136 case PIX_FMT_YUVJ440P:
137 case PIX_FMT_YUVJ444P:
138 case PIX_FMT_YUVA420P:
139 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
141 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)
142 h_align= 32; // interlaced is rounded up to 2 MBs
144 case PIX_FMT_YUV411P:
145 case PIX_FMT_UYYVYY411:
149 case PIX_FMT_YUV410P:
150 if(s->codec_id == CODEC_ID_SVQ1){
155 if(s->codec_id == CODEC_ID_RPZA){
162 if(s->codec_id == CODEC_ID_SMC){
168 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
179 *width = FFALIGN(*width , w_align);
180 *height= FFALIGN(*height, h_align);
181 if(s->codec_id == CODEC_ID_H264)
182 *height+=2; // some of the optimized chroma MC reads one line too much
185 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
186 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
189 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
193 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
200 if(pic->data[0]!=NULL) {
201 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
204 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
205 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
209 if(avcodec_check_dimensions(s,w,h))
212 if(s->internal_buffer==NULL){
213 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
216 s->internal_buffer= av_fast_realloc(
218 &s->internal_buffer_size,
219 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
223 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
224 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
227 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
229 av_freep(&buf->base[i]);
235 pic->age= *picture_number - buf->last_pic_num;
236 buf->last_pic_num= *picture_number;
238 int h_chroma_shift, v_chroma_shift;
245 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
247 avcodec_align_dimensions(s, &w, &h);
249 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
255 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
256 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
257 ff_fill_linesize(&picture, s->pix_fmt, w);
258 // increase alignment of w for next try (rhs gives the lowest bit set in w)
263 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
264 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
265 //picture size unneccessarily in some cases. The solution here is not
266 //pretty and better ideas are welcome!
268 if(s->codec_id == CODEC_ID_SVQ1)
272 stride_align[i] = STRIDE_ALIGN;
273 unaligned |= picture.linesize[i] % stride_align[i];
277 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
281 for (i=0; i<3 && picture.data[i+1]; i++)
282 size[i] = picture.data[i+1] - picture.data[i];
283 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
285 buf->last_pic_num= -256*256*256*64;
286 memset(buf->base, 0, sizeof(buf->base));
287 memset(buf->data, 0, sizeof(buf->data));
289 for(i=0; i<4 && size[i]; i++){
290 const int h_shift= i==0 ? 0 : h_chroma_shift;
291 const int v_shift= i==0 ? 0 : v_chroma_shift;
293 buf->linesize[i]= picture.linesize[i];
295 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
296 if(buf->base[i]==NULL) return -1;
297 memset(buf->base[i], 128, size[i]);
299 // no edge if EDEG EMU or not planar YUV
300 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
301 buf->data[i] = buf->base[i];
303 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
305 if(size[1] && !size[2])
306 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
307 buf->width = s->width;
308 buf->height = s->height;
309 buf->pix_fmt= s->pix_fmt;
310 pic->age= 256*256*256*64;
312 pic->type= FF_BUFFER_TYPE_INTERNAL;
315 pic->base[i]= buf->base[i];
316 pic->data[i]= buf->data[i];
317 pic->linesize[i]= buf->linesize[i];
319 s->internal_buffer_count++;
321 pic->reordered_opaque= s->reordered_opaque;
323 if(s->debug&FF_DEBUG_BUFFERS)
324 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
329 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
331 InternalBuffer *buf, *last;
333 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
334 assert(s->internal_buffer_count);
336 buf = NULL; /* avoids warning */
337 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
338 buf= &((InternalBuffer*)s->internal_buffer)[i];
339 if(buf->data[0] == pic->data[0])
342 assert(i < s->internal_buffer_count);
343 s->internal_buffer_count--;
344 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
346 FFSWAP(InternalBuffer, *buf, *last);
350 // pic->base[i]=NULL;
352 //printf("R%X\n", pic->opaque);
354 if(s->debug&FF_DEBUG_BUFFERS)
355 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
358 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
362 /* If no picture return a new buffer */
363 if(pic->data[0] == NULL) {
364 /* We will copy from buffer, so must be readable */
365 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
366 return s->get_buffer(s, pic);
369 /* If internal buffer type return the same buffer */
370 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
374 * Not internal type and reget_buffer not overridden, emulate cr buffer
377 for(i = 0; i < 4; i++)
378 pic->data[i] = pic->base[i] = NULL;
380 /* Allocate new frame */
381 if (s->get_buffer(s, pic))
383 /* Copy image data from old buffer to new buffer */
384 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
386 s->release_buffer(s, &temp_pic); // Release old frame
390 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
393 for(i=0; i<count; i++){
394 int r= func(c, (char*)arg + i*size);
400 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){
403 for(i=0; i<count; i++){
404 int r= func(c, arg, i, 0);
410 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
411 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
416 void avcodec_get_frame_defaults(AVFrame *pic){
417 memset(pic, 0, sizeof(AVFrame));
419 pic->pts= AV_NOPTS_VALUE;
423 AVFrame *avcodec_alloc_frame(void){
424 AVFrame *pic= av_malloc(sizeof(AVFrame));
426 if(pic==NULL) return NULL;
428 avcodec_get_frame_defaults(pic);
433 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
437 /* If there is a user-supplied mutex locking routine, call it. */
439 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
443 entangled_thread_counter++;
444 if(entangled_thread_counter != 1){
445 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
449 if(avctx->codec || !codec)
452 if (codec->priv_data_size > 0) {
453 avctx->priv_data = av_mallocz(codec->priv_data_size);
454 if (!avctx->priv_data) {
455 ret = AVERROR(ENOMEM);
459 avctx->priv_data = NULL;
462 if(avctx->coded_width && avctx->coded_height)
463 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
464 else if(avctx->width && avctx->height)
465 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
467 #define SANE_NB_CHANNELS 128U
468 if (((avctx->coded_width || avctx->coded_height)
469 && avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height))
470 || avctx->channels > SANE_NB_CHANNELS) {
471 ret = AVERROR(EINVAL);
475 avctx->codec = codec;
476 if ((avctx->codec_type == CODEC_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
477 avctx->codec_id == CODEC_ID_NONE) {
478 avctx->codec_type = codec->type;
479 avctx->codec_id = codec->id;
481 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){
482 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
485 avctx->frame_number = 0;
486 if(avctx->codec->init){
487 ret = avctx->codec->init(avctx);
494 entangled_thread_counter--;
496 /* Release any user-supplied mutex. */
498 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
502 av_freep(&avctx->priv_data);
507 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
508 const short *samples)
510 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
511 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
514 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
515 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
516 avctx->frame_number++;
522 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
525 if(buf_size < FF_MIN_BUFFER_SIZE){
526 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
529 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
531 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
532 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
533 avctx->frame_number++;
534 emms_c(); //needed to avoid an emms_c() call before every return;
541 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
542 const AVSubtitle *sub)
545 if(sub->start_display_time) {
546 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
549 if(sub->num_rects == 0 || !sub->rects)
551 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
552 avctx->frame_number++;
556 #if LIBAVCODEC_VERSION_MAJOR < 53
557 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
558 int *got_picture_ptr,
559 const uint8_t *buf, int buf_size)
562 av_init_packet(&avpkt);
564 avpkt.size = buf_size;
565 // HACK for CorePNG to decode as normal PNG by default
566 avpkt.flags = AV_PKT_FLAG_KEY;
568 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
572 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
573 int *got_picture_ptr,
579 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
581 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
582 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
585 emms_c(); //needed to avoid an emms_c() call before every return;
587 if (*got_picture_ptr)
588 avctx->frame_number++;
595 #if LIBAVCODEC_VERSION_MAJOR < 53
596 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
598 const uint8_t *buf, int buf_size)
601 av_init_packet(&avpkt);
603 avpkt.size = buf_size;
605 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
609 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
615 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
616 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
617 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
618 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
621 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
622 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
623 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
627 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
628 avctx->frame_number++;
636 #if LIBAVCODEC_VERSION_MAJOR < 53
637 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
639 const uint8_t *buf, int buf_size)
642 av_init_packet(&avpkt);
644 avpkt.size = buf_size;
646 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
650 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
657 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
659 avctx->frame_number++;
663 int avcodec_close(AVCodecContext *avctx)
665 /* If there is a user-supplied mutex locking routine, call it. */
667 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
671 entangled_thread_counter++;
672 if(entangled_thread_counter != 1){
673 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
674 entangled_thread_counter--;
678 if (HAVE_THREADS && avctx->thread_opaque)
679 avcodec_thread_free(avctx);
680 if (avctx->codec && avctx->codec->close)
681 avctx->codec->close(avctx);
682 avcodec_default_free_buffers(avctx);
683 av_freep(&avctx->priv_data);
685 entangled_thread_counter--;
687 /* Release any user-supplied mutex. */
689 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
694 AVCodec *avcodec_find_encoder(enum CodecID id)
699 if (p->encode != NULL && p->id == id)
706 AVCodec *avcodec_find_encoder_by_name(const char *name)
713 if (p->encode != NULL && strcmp(name,p->name) == 0)
720 AVCodec *avcodec_find_decoder(enum CodecID id)
725 if (p->decode != NULL && p->id == id)
732 AVCodec *avcodec_find_decoder_by_name(const char *name)
739 if (p->decode != NULL && strcmp(name,p->name) == 0)
746 int av_get_bit_rate(AVCodecContext *ctx)
751 switch(ctx->codec_type) {
752 case CODEC_TYPE_VIDEO:
753 bit_rate = ctx->bit_rate;
755 case CODEC_TYPE_AUDIO:
756 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
757 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
759 case CODEC_TYPE_DATA:
760 bit_rate = ctx->bit_rate;
762 case CODEC_TYPE_SUBTITLE:
763 bit_rate = ctx->bit_rate;
765 case CODEC_TYPE_ATTACHMENT:
766 bit_rate = ctx->bit_rate;
775 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
777 const char *codec_name;
781 AVRational display_aspect_ratio;
784 p = avcodec_find_encoder(enc->codec_id);
786 p = avcodec_find_decoder(enc->codec_id);
789 codec_name = p->name;
790 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
791 /* fake mpeg2 transport stream codec (currently not
793 codec_name = "mpeg2ts";
794 } else if (enc->codec_name[0] != '\0') {
795 codec_name = enc->codec_name;
797 /* output avi tags */
798 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
799 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
800 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
801 enc->codec_tag & 0xff,
802 (enc->codec_tag >> 8) & 0xff,
803 (enc->codec_tag >> 16) & 0xff,
804 (enc->codec_tag >> 24) & 0xff,
807 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
812 switch(enc->codec_type) {
813 case CODEC_TYPE_VIDEO:
814 snprintf(buf, buf_size,
816 codec_name, enc->mb_decision ? " (hq)" : "");
817 if (enc->pix_fmt != PIX_FMT_NONE) {
818 snprintf(buf + strlen(buf), buf_size - strlen(buf),
820 avcodec_get_pix_fmt_name(enc->pix_fmt));
823 snprintf(buf + strlen(buf), buf_size - strlen(buf),
825 enc->width, enc->height);
826 if (enc->sample_aspect_ratio.num) {
827 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
828 enc->width*enc->sample_aspect_ratio.num,
829 enc->height*enc->sample_aspect_ratio.den,
831 snprintf(buf + strlen(buf), buf_size - strlen(buf),
832 " [PAR %d:%d DAR %d:%d]",
833 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
834 display_aspect_ratio.num, display_aspect_ratio.den);
836 if(av_log_get_level() >= AV_LOG_DEBUG){
837 int g= av_gcd(enc->time_base.num, enc->time_base.den);
838 snprintf(buf + strlen(buf), buf_size - strlen(buf),
840 enc->time_base.num/g, enc->time_base.den/g);
844 snprintf(buf + strlen(buf), buf_size - strlen(buf),
845 ", q=%d-%d", enc->qmin, enc->qmax);
848 case CODEC_TYPE_AUDIO:
849 snprintf(buf, buf_size,
852 if (enc->sample_rate) {
853 snprintf(buf + strlen(buf), buf_size - strlen(buf),
854 ", %d Hz", enc->sample_rate);
856 av_strlcat(buf, ", ", buf_size);
857 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
858 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
859 snprintf(buf + strlen(buf), buf_size - strlen(buf),
860 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
863 case CODEC_TYPE_DATA:
864 snprintf(buf, buf_size, "Data: %s", codec_name);
866 case CODEC_TYPE_SUBTITLE:
867 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
869 case CODEC_TYPE_ATTACHMENT:
870 snprintf(buf, buf_size, "Attachment: %s", codec_name);
873 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
877 if (enc->flags & CODEC_FLAG_PASS1)
878 snprintf(buf + strlen(buf), buf_size - strlen(buf),
880 if (enc->flags & CODEC_FLAG_PASS2)
881 snprintf(buf + strlen(buf), buf_size - strlen(buf),
884 bitrate = av_get_bit_rate(enc);
886 snprintf(buf + strlen(buf), buf_size - strlen(buf),
887 ", %d kb/s", bitrate / 1000);
891 unsigned avcodec_version( void )
893 return LIBAVCODEC_VERSION_INT;
896 const char * avcodec_configuration(void)
898 return FFMPEG_CONFIGURATION;
901 const char * avcodec_license(void)
903 #define LICENSE_PREFIX "libavcodec license: "
904 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
907 void avcodec_init(void)
909 static int initialized = 0;
911 if (initialized != 0)
915 dsputil_static_init();
918 void avcodec_flush_buffers(AVCodecContext *avctx)
920 if(avctx->codec->flush)
921 avctx->codec->flush(avctx);
924 void avcodec_default_free_buffers(AVCodecContext *s){
927 if(s->internal_buffer==NULL) return;
929 if (s->internal_buffer_count)
930 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count);
931 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
932 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
934 av_freep(&buf->base[j]);
938 av_freep(&s->internal_buffer);
940 s->internal_buffer_count=0;
943 char av_get_pict_type_char(int pict_type){
945 case FF_I_TYPE: return 'I';
946 case FF_P_TYPE: return 'P';
947 case FF_B_TYPE: return 'B';
948 case FF_S_TYPE: return 'S';
949 case FF_SI_TYPE:return 'i';
950 case FF_SP_TYPE:return 'p';
951 case FF_BI_TYPE:return 'b';
956 int av_get_bits_per_sample(enum CodecID codec_id){
958 case CODEC_ID_ADPCM_SBPRO_2:
960 case CODEC_ID_ADPCM_SBPRO_3:
962 case CODEC_ID_ADPCM_SBPRO_4:
963 case CODEC_ID_ADPCM_CT:
965 case CODEC_ID_PCM_ALAW:
966 case CODEC_ID_PCM_MULAW:
967 case CODEC_ID_PCM_S8:
968 case CODEC_ID_PCM_U8:
969 case CODEC_ID_PCM_ZORK:
971 case CODEC_ID_PCM_S16BE:
972 case CODEC_ID_PCM_S16LE:
973 case CODEC_ID_PCM_S16LE_PLANAR:
974 case CODEC_ID_PCM_U16BE:
975 case CODEC_ID_PCM_U16LE:
977 case CODEC_ID_PCM_S24DAUD:
978 case CODEC_ID_PCM_S24BE:
979 case CODEC_ID_PCM_S24LE:
980 case CODEC_ID_PCM_U24BE:
981 case CODEC_ID_PCM_U24LE:
983 case CODEC_ID_PCM_S32BE:
984 case CODEC_ID_PCM_S32LE:
985 case CODEC_ID_PCM_U32BE:
986 case CODEC_ID_PCM_U32LE:
987 case CODEC_ID_PCM_F32BE:
988 case CODEC_ID_PCM_F32LE:
990 case CODEC_ID_PCM_F64BE:
991 case CODEC_ID_PCM_F64LE:
998 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
999 switch (sample_fmt) {
1002 case SAMPLE_FMT_S16:
1004 case SAMPLE_FMT_S32:
1005 case SAMPLE_FMT_FLT:
1007 case SAMPLE_FMT_DBL:
1015 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1016 s->thread_count = thread_count;
1021 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1035 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1036 * Also, tries to create file in /tmp first, if possible.
1037 * *prefix can be a character constant; *filename will be allocated internally.
1038 * Returns file descriptor of opened file (or -1 on error)
1039 * and opened file name in **filename. */
1040 int av_tempfile(char *prefix, char **filename) {
1043 *filename = tempnam(".", prefix);
1045 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1046 *filename = av_malloc(len);
1048 /* -----common section-----*/
1049 if (*filename == NULL) {
1050 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1054 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1056 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1057 fd = mkstemp(*filename);
1059 snprintf(*filename, len, "./%sXXXXXX", prefix);
1060 fd = mkstemp(*filename);
1063 /* -----common section-----*/
1065 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1068 return fd; /* success */
1074 } VideoFrameSizeAbbr;
1078 int rate_num, rate_den;
1079 } VideoFrameRateAbbr;
1081 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1082 { "ntsc", 720, 480 },
1083 { "pal", 720, 576 },
1084 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1085 { "qpal", 352, 288 }, /* VCD compliant PAL */
1086 { "sntsc", 640, 480 }, /* square pixel NTSC */
1087 { "spal", 768, 576 }, /* square pixel PAL */
1088 { "film", 352, 240 },
1089 { "ntsc-film", 352, 240 },
1090 { "sqcif", 128, 96 },
1091 { "qcif", 176, 144 },
1092 { "cif", 352, 288 },
1093 { "4cif", 704, 576 },
1094 { "16cif", 1408,1152 },
1095 { "qqvga", 160, 120 },
1096 { "qvga", 320, 240 },
1097 { "vga", 640, 480 },
1098 { "svga", 800, 600 },
1099 { "xga", 1024, 768 },
1100 { "uxga", 1600,1200 },
1101 { "qxga", 2048,1536 },
1102 { "sxga", 1280,1024 },
1103 { "qsxga", 2560,2048 },
1104 { "hsxga", 5120,4096 },
1105 { "wvga", 852, 480 },
1106 { "wxga", 1366, 768 },
1107 { "wsxga", 1600,1024 },
1108 { "wuxga", 1920,1200 },
1109 { "woxga", 2560,1600 },
1110 { "wqsxga", 3200,2048 },
1111 { "wquxga", 3840,2400 },
1112 { "whsxga", 6400,4096 },
1113 { "whuxga", 7680,4800 },
1114 { "cga", 320, 200 },
1115 { "ega", 640, 350 },
1116 { "hd480", 852, 480 },
1117 { "hd720", 1280, 720 },
1118 { "hd1080", 1920,1080 },
1121 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1122 { "ntsc", 30000, 1001 },
1124 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1125 { "qpal", 25, 1 }, /* VCD compliant PAL */
1126 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1127 { "spal", 25, 1 }, /* square pixel PAL */
1129 { "ntsc-film", 24000, 1001 },
1132 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1135 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1137 int frame_width = 0, frame_height = 0;
1140 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1141 frame_width = video_frame_size_abbrs[i].width;
1142 frame_height = video_frame_size_abbrs[i].height;
1148 frame_width = strtol(p, &p, 10);
1151 frame_height = strtol(p, &p, 10);
1153 if (frame_width <= 0 || frame_height <= 0)
1155 *width_ptr = frame_width;
1156 *height_ptr = frame_height;
1160 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1163 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1166 /* First, we check our abbreviation table */
1167 for (i = 0; i < n; ++i)
1168 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1169 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1170 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1174 /* Then, we try to parse it as fraction */
1175 cp = strchr(arg, '/');
1177 cp = strchr(arg, ':');
1180 frame_rate->num = strtol(arg, &cpp, 10);
1181 if (cpp != arg || cpp == cp)
1182 frame_rate->den = strtol(cp+1, &cpp, 10);
1184 frame_rate->num = 0;
1187 /* Finally we give up and parse it as double */
1188 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1189 frame_rate->den = time_base.den;
1190 frame_rate->num = time_base.num;
1192 if (!frame_rate->num || !frame_rate->den)
1198 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
1200 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1201 "version to the newest one from SVN. If the problem still "
1202 "occurs, it means that your file has a feature which has not "
1203 "been implemented.", feature);
1205 av_log_ask_for_sample(avc, NULL);
1207 av_log(avc, AV_LOG_WARNING, "\n");
1210 void av_log_ask_for_sample(void *avc, const char *msg)
1213 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1214 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1215 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1216 "and contact the ffmpeg-devel mailing list.\n");
1219 static AVHWAccel *first_hwaccel = NULL;
1221 void av_register_hwaccel(AVHWAccel *hwaccel)
1223 AVHWAccel **p = &first_hwaccel;
1227 hwaccel->next = NULL;
1230 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1232 return hwaccel ? hwaccel->next : first_hwaccel;
1235 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1237 AVHWAccel *hwaccel=NULL;
1239 while((hwaccel= av_hwaccel_next(hwaccel))){
1240 if ( hwaccel->id == codec_id
1241 && hwaccel->pix_fmt == pix_fmt)
1247 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1249 if (ff_lockmgr_cb) {
1250 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1256 if (ff_lockmgr_cb) {
1257 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))