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 const uint8_t ff_reverse[256]={
49 0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
50 0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
51 0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
52 0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
53 0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
54 0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
55 0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
56 0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
57 0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
58 0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
59 0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
60 0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
61 0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
62 0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
63 0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
64 0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
67 static int volatile entangled_thread_counter=0;
68 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op);
69 static void *codec_mutex;
71 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
76 *size= FFMAX(17*min_size/16 + 32, min_size);
78 ptr= av_realloc(ptr, *size);
79 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
85 void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size)
90 *size= FFMAX(17*min_size/16 + 32, min_size);
92 *p = av_malloc(*size);
96 /* encoder management */
97 static AVCodec *first_avcodec = NULL;
99 AVCodec *av_codec_next(AVCodec *c){
100 if(c) return c->next;
101 else return first_avcodec;
104 void avcodec_register(AVCodec *codec)
109 while (*p != NULL) p = &(*p)->next;
114 #if LIBAVCODEC_VERSION_MAJOR < 53
115 void register_avcodec(AVCodec *codec)
117 avcodec_register(codec);
121 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
122 s->coded_width = width;
123 s->coded_height= height;
124 s->width = -((-width )>>s->lowres);
125 s->height= -((-height)>>s->lowres);
128 typedef struct InternalBuffer{
134 enum PixelFormat pix_fmt;
137 #define INTERNAL_BUFFER_SIZE 32
139 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
144 case PIX_FMT_YUV420P:
145 case PIX_FMT_YUYV422:
146 case PIX_FMT_UYVY422:
147 case PIX_FMT_YUV422P:
148 case PIX_FMT_YUV444P:
150 case PIX_FMT_GRAY16BE:
151 case PIX_FMT_GRAY16LE:
152 case PIX_FMT_YUVJ420P:
153 case PIX_FMT_YUVJ422P:
154 case PIX_FMT_YUVJ444P:
155 case PIX_FMT_YUVA420P:
156 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
158 if(s->codec_id == CODEC_ID_MPEG2VIDEO)
159 h_align= 32; // interlaced is rounded up to 2 MBs
161 case PIX_FMT_YUV411P:
162 case PIX_FMT_UYYVYY411:
166 case PIX_FMT_YUV410P:
167 if(s->codec_id == CODEC_ID_SVQ1){
172 if(s->codec_id == CODEC_ID_RPZA){
179 if(s->codec_id == CODEC_ID_SMC){
185 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
196 *width = FFALIGN(*width , w_align);
197 *height= FFALIGN(*height, h_align);
198 if(s->codec_id == CODEC_ID_H264)
199 *height+=2; // some of the optimized chroma MC reads one line too much
202 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
203 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8)
206 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
210 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
217 if(pic->data[0]!=NULL) {
218 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
221 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
222 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
226 if(avcodec_check_dimensions(s,w,h))
229 if(s->internal_buffer==NULL){
230 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
233 s->internal_buffer= av_fast_realloc(
235 &s->internal_buffer_size,
236 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
240 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
241 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
244 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
246 av_freep(&buf->base[i]);
252 pic->age= *picture_number - buf->last_pic_num;
253 buf->last_pic_num= *picture_number;
255 int h_chroma_shift, v_chroma_shift;
262 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
264 avcodec_align_dimensions(s, &w, &h);
266 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
272 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
273 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
274 ff_fill_linesize(&picture, s->pix_fmt, w);
275 // increase alignment of w for next try (rhs gives the lowest bit set in w)
280 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
281 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
282 //picture size unneccessarily in some cases. The solution here is not
283 //pretty and better ideas are welcome!
285 if(s->codec_id == CODEC_ID_SVQ1)
289 stride_align[i] = STRIDE_ALIGN;
290 unaligned |= picture.linesize[i] % stride_align[i];
294 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
298 for (i=0; i<3 && picture.data[i+1]; i++)
299 size[i] = picture.data[i+1] - picture.data[i];
300 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
302 buf->last_pic_num= -256*256*256*64;
303 memset(buf->base, 0, sizeof(buf->base));
304 memset(buf->data, 0, sizeof(buf->data));
306 for(i=0; i<4 && size[i]; i++){
307 const int h_shift= i==0 ? 0 : h_chroma_shift;
308 const int v_shift= i==0 ? 0 : v_chroma_shift;
310 buf->linesize[i]= picture.linesize[i];
312 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
313 if(buf->base[i]==NULL) return -1;
314 memset(buf->base[i], 128, size[i]);
316 // no edge if EDEG EMU or not planar YUV
317 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
318 buf->data[i] = buf->base[i];
320 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
322 if(size[1] && !size[2])
323 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
324 buf->width = s->width;
325 buf->height = s->height;
326 buf->pix_fmt= s->pix_fmt;
327 pic->age= 256*256*256*64;
329 pic->type= FF_BUFFER_TYPE_INTERNAL;
332 pic->base[i]= buf->base[i];
333 pic->data[i]= buf->data[i];
334 pic->linesize[i]= buf->linesize[i];
336 s->internal_buffer_count++;
338 pic->reordered_opaque= s->reordered_opaque;
340 if(s->debug&FF_DEBUG_BUFFERS)
341 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
346 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
348 InternalBuffer *buf, *last;
350 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
351 assert(s->internal_buffer_count);
353 buf = NULL; /* avoids warning */
354 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
355 buf= &((InternalBuffer*)s->internal_buffer)[i];
356 if(buf->data[0] == pic->data[0])
359 assert(i < s->internal_buffer_count);
360 s->internal_buffer_count--;
361 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
363 FFSWAP(InternalBuffer, *buf, *last);
367 // pic->base[i]=NULL;
369 //printf("R%X\n", pic->opaque);
371 if(s->debug&FF_DEBUG_BUFFERS)
372 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
375 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
379 /* If no picture return a new buffer */
380 if(pic->data[0] == NULL) {
381 /* We will copy from buffer, so must be readable */
382 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
383 return s->get_buffer(s, pic);
386 /* If internal buffer type return the same buffer */
387 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
391 * Not internal type and reget_buffer not overridden, emulate cr buffer
394 for(i = 0; i < 4; i++)
395 pic->data[i] = pic->base[i] = NULL;
397 /* Allocate new frame */
398 if (s->get_buffer(s, pic))
400 /* Copy image data from old buffer to new buffer */
401 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
403 s->release_buffer(s, &temp_pic); // Release old frame
407 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
410 for(i=0; i<count; i++){
411 int r= func(c, (char*)arg + i*size);
417 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
418 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
423 void avcodec_get_frame_defaults(AVFrame *pic){
424 memset(pic, 0, sizeof(AVFrame));
426 pic->pts= AV_NOPTS_VALUE;
430 AVFrame *avcodec_alloc_frame(void){
431 AVFrame *pic= av_malloc(sizeof(AVFrame));
433 if(pic==NULL) return NULL;
435 avcodec_get_frame_defaults(pic);
440 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
444 /* If there is a user-supplied mutex locking routine, call it. */
446 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
450 entangled_thread_counter++;
451 if(entangled_thread_counter != 1){
452 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
456 if(avctx->codec || !codec)
459 if (codec->priv_data_size > 0) {
460 avctx->priv_data = av_mallocz(codec->priv_data_size);
461 if (!avctx->priv_data) {
462 ret = AVERROR(ENOMEM);
466 avctx->priv_data = NULL;
469 if(avctx->coded_width && avctx->coded_height)
470 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
471 else if(avctx->width && avctx->height)
472 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
474 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
475 av_freep(&avctx->priv_data);
476 ret = AVERROR(EINVAL);
480 avctx->codec = codec;
481 avctx->codec_id = codec->id;
482 avctx->frame_number = 0;
483 if(avctx->codec->init){
484 ret = avctx->codec->init(avctx);
486 av_freep(&avctx->priv_data);
493 entangled_thread_counter--;
495 /* Release any user-supplied mutex. */
497 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
502 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
503 const short *samples)
505 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
506 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
509 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
510 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
511 avctx->frame_number++;
517 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
520 if(buf_size < FF_MIN_BUFFER_SIZE){
521 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
524 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
526 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
527 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
528 avctx->frame_number++;
529 emms_c(); //needed to avoid an emms_c() call before every return;
536 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
537 const AVSubtitle *sub)
540 if(sub->start_display_time) {
541 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
544 if(sub->num_rects == 0 || !sub->rects)
546 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
547 avctx->frame_number++;
551 #if LIBAVCODEC_VERSION_MAJOR < 53
552 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
553 int *got_picture_ptr,
554 const uint8_t *buf, int buf_size)
557 av_init_packet(&avpkt);
559 avpkt.size = buf_size;
560 // HACK for CorePNG to decode as normal PNG by default
561 avpkt.flags = AV_PKT_FLAG_KEY;
563 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
567 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
568 int *got_picture_ptr,
574 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
576 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
577 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
580 emms_c(); //needed to avoid an emms_c() call before every return;
582 if (*got_picture_ptr)
583 avctx->frame_number++;
590 #if LIBAVCODEC_VERSION_MAJOR < 53
591 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
593 const uint8_t *buf, int buf_size)
596 av_init_packet(&avpkt);
598 avpkt.size = buf_size;
600 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
604 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
610 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
611 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
612 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
613 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
616 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
617 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
618 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
622 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
623 avctx->frame_number++;
631 #if LIBAVCODEC_VERSION_MAJOR < 53
632 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
634 const uint8_t *buf, int buf_size)
637 av_init_packet(&avpkt);
639 avpkt.size = buf_size;
641 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
645 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
652 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
654 avctx->frame_number++;
658 int avcodec_close(AVCodecContext *avctx)
660 /* If there is a user-supplied mutex locking routine, call it. */
662 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
666 entangled_thread_counter++;
667 if(entangled_thread_counter != 1){
668 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
669 entangled_thread_counter--;
673 if (HAVE_THREADS && avctx->thread_opaque)
674 avcodec_thread_free(avctx);
675 if (avctx->codec->close)
676 avctx->codec->close(avctx);
677 avcodec_default_free_buffers(avctx);
678 av_freep(&avctx->priv_data);
680 entangled_thread_counter--;
682 /* Release any user-supplied mutex. */
684 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
689 AVCodec *avcodec_find_encoder(enum CodecID id)
694 if (p->encode != NULL && p->id == id)
701 AVCodec *avcodec_find_encoder_by_name(const char *name)
708 if (p->encode != NULL && strcmp(name,p->name) == 0)
715 AVCodec *avcodec_find_decoder(enum CodecID id)
720 if (p->decode != NULL && p->id == id)
727 AVCodec *avcodec_find_decoder_by_name(const char *name)
734 if (p->decode != NULL && strcmp(name,p->name) == 0)
741 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
743 const char *codec_name;
747 AVRational display_aspect_ratio;
750 p = avcodec_find_encoder(enc->codec_id);
752 p = avcodec_find_decoder(enc->codec_id);
755 codec_name = p->name;
756 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
757 /* fake mpeg2 transport stream codec (currently not
759 codec_name = "mpeg2ts";
760 } else if (enc->codec_name[0] != '\0') {
761 codec_name = enc->codec_name;
763 /* output avi tags */
764 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
765 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
766 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
767 enc->codec_tag & 0xff,
768 (enc->codec_tag >> 8) & 0xff,
769 (enc->codec_tag >> 16) & 0xff,
770 (enc->codec_tag >> 24) & 0xff,
773 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
778 switch(enc->codec_type) {
779 case CODEC_TYPE_VIDEO:
780 snprintf(buf, buf_size,
782 codec_name, enc->mb_decision ? " (hq)" : "");
783 if (enc->pix_fmt != PIX_FMT_NONE) {
784 snprintf(buf + strlen(buf), buf_size - strlen(buf),
786 avcodec_get_pix_fmt_name(enc->pix_fmt));
789 snprintf(buf + strlen(buf), buf_size - strlen(buf),
791 enc->width, enc->height);
792 if (enc->sample_aspect_ratio.num) {
793 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
794 enc->width*enc->sample_aspect_ratio.num,
795 enc->height*enc->sample_aspect_ratio.den,
797 snprintf(buf + strlen(buf), buf_size - strlen(buf),
798 " [PAR %d:%d DAR %d:%d]",
799 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
800 display_aspect_ratio.num, display_aspect_ratio.den);
802 if(av_log_get_level() >= AV_LOG_DEBUG){
803 int g= av_gcd(enc->time_base.num, enc->time_base.den);
804 snprintf(buf + strlen(buf), buf_size - strlen(buf),
806 enc->time_base.num/g, enc->time_base.den/g);
810 snprintf(buf + strlen(buf), buf_size - strlen(buf),
811 ", q=%d-%d", enc->qmin, enc->qmax);
813 bitrate = enc->bit_rate;
815 case CODEC_TYPE_AUDIO:
816 snprintf(buf, buf_size,
819 if (enc->sample_rate) {
820 snprintf(buf + strlen(buf), buf_size - strlen(buf),
821 ", %d Hz", enc->sample_rate);
823 av_strlcat(buf, ", ", buf_size);
824 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
825 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
826 snprintf(buf + strlen(buf), buf_size - strlen(buf),
827 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
830 /* for PCM codecs, compute bitrate directly */
831 switch(enc->codec_id) {
832 case CODEC_ID_PCM_F64BE:
833 case CODEC_ID_PCM_F64LE:
834 bitrate = enc->sample_rate * enc->channels * 64;
836 case CODEC_ID_PCM_S32LE:
837 case CODEC_ID_PCM_S32BE:
838 case CODEC_ID_PCM_U32LE:
839 case CODEC_ID_PCM_U32BE:
840 case CODEC_ID_PCM_F32BE:
841 case CODEC_ID_PCM_F32LE:
842 bitrate = enc->sample_rate * enc->channels * 32;
844 case CODEC_ID_PCM_S24LE:
845 case CODEC_ID_PCM_S24BE:
846 case CODEC_ID_PCM_U24LE:
847 case CODEC_ID_PCM_U24BE:
848 case CODEC_ID_PCM_S24DAUD:
849 bitrate = enc->sample_rate * enc->channels * 24;
851 case CODEC_ID_PCM_S16LE:
852 case CODEC_ID_PCM_S16BE:
853 case CODEC_ID_PCM_S16LE_PLANAR:
854 case CODEC_ID_PCM_U16LE:
855 case CODEC_ID_PCM_U16BE:
856 bitrate = enc->sample_rate * enc->channels * 16;
858 case CODEC_ID_PCM_S8:
859 case CODEC_ID_PCM_U8:
860 case CODEC_ID_PCM_ALAW:
861 case CODEC_ID_PCM_MULAW:
862 case CODEC_ID_PCM_ZORK:
863 bitrate = enc->sample_rate * enc->channels * 8;
866 bitrate = enc->bit_rate;
870 case CODEC_TYPE_DATA:
871 snprintf(buf, buf_size, "Data: %s", codec_name);
872 bitrate = enc->bit_rate;
874 case CODEC_TYPE_SUBTITLE:
875 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
876 bitrate = enc->bit_rate;
878 case CODEC_TYPE_ATTACHMENT:
879 snprintf(buf, buf_size, "Attachment: %s", codec_name);
880 bitrate = enc->bit_rate;
883 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
887 if (enc->flags & CODEC_FLAG_PASS1)
888 snprintf(buf + strlen(buf), buf_size - strlen(buf),
890 if (enc->flags & CODEC_FLAG_PASS2)
891 snprintf(buf + strlen(buf), buf_size - strlen(buf),
895 snprintf(buf + strlen(buf), buf_size - strlen(buf),
896 ", %d kb/s", bitrate / 1000);
900 unsigned avcodec_version( void )
902 return LIBAVCODEC_VERSION_INT;
905 void avcodec_init(void)
907 static int initialized = 0;
909 if (initialized != 0)
913 dsputil_static_init();
916 void avcodec_flush_buffers(AVCodecContext *avctx)
918 if(avctx->codec->flush)
919 avctx->codec->flush(avctx);
922 void avcodec_default_free_buffers(AVCodecContext *s){
925 if(s->internal_buffer==NULL) return;
927 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
928 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
930 av_freep(&buf->base[j]);
934 av_freep(&s->internal_buffer);
936 s->internal_buffer_count=0;
939 char av_get_pict_type_char(int pict_type){
941 case FF_I_TYPE: return 'I';
942 case FF_P_TYPE: return 'P';
943 case FF_B_TYPE: return 'B';
944 case FF_S_TYPE: return 'S';
945 case FF_SI_TYPE:return 'i';
946 case FF_SP_TYPE:return 'p';
947 case FF_BI_TYPE:return 'b';
952 int av_get_bits_per_sample(enum CodecID codec_id){
954 case CODEC_ID_ADPCM_SBPRO_2:
956 case CODEC_ID_ADPCM_SBPRO_3:
958 case CODEC_ID_ADPCM_SBPRO_4:
959 case CODEC_ID_ADPCM_CT:
961 case CODEC_ID_PCM_ALAW:
962 case CODEC_ID_PCM_MULAW:
963 case CODEC_ID_PCM_S8:
964 case CODEC_ID_PCM_U8:
965 case CODEC_ID_PCM_ZORK:
967 case CODEC_ID_PCM_S16BE:
968 case CODEC_ID_PCM_S16LE:
969 case CODEC_ID_PCM_S16LE_PLANAR:
970 case CODEC_ID_PCM_U16BE:
971 case CODEC_ID_PCM_U16LE:
973 case CODEC_ID_PCM_S24DAUD:
974 case CODEC_ID_PCM_S24BE:
975 case CODEC_ID_PCM_S24LE:
976 case CODEC_ID_PCM_U24BE:
977 case CODEC_ID_PCM_U24LE:
979 case CODEC_ID_PCM_S32BE:
980 case CODEC_ID_PCM_S32LE:
981 case CODEC_ID_PCM_U32BE:
982 case CODEC_ID_PCM_U32LE:
983 case CODEC_ID_PCM_F32BE:
984 case CODEC_ID_PCM_F32LE:
986 case CODEC_ID_PCM_F64BE:
987 case CODEC_ID_PCM_F64LE:
994 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
995 switch (sample_fmt) {
1000 case SAMPLE_FMT_S32:
1001 case SAMPLE_FMT_FLT:
1003 case SAMPLE_FMT_DBL:
1011 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1012 s->thread_count = thread_count;
1017 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1031 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1032 * Also, tries to create file in /tmp first, if possible.
1033 * *prefix can be a character constant; *filename will be allocated internally.
1034 * Returns file descriptor of opened file (or -1 on error)
1035 * and opened file name in **filename. */
1036 int av_tempfile(char *prefix, char **filename) {
1039 *filename = tempnam(".", prefix);
1041 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1042 *filename = av_malloc(len);
1044 /* -----common section-----*/
1045 if (*filename == NULL) {
1046 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1050 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1052 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1053 fd = mkstemp(*filename);
1055 snprintf(*filename, len, "./%sXXXXXX", prefix);
1056 fd = mkstemp(*filename);
1059 /* -----common section-----*/
1061 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1064 return fd; /* success */
1070 } VideoFrameSizeAbbr;
1074 int rate_num, rate_den;
1075 } VideoFrameRateAbbr;
1077 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1078 { "ntsc", 720, 480 },
1079 { "pal", 720, 576 },
1080 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1081 { "qpal", 352, 288 }, /* VCD compliant PAL */
1082 { "sntsc", 640, 480 }, /* square pixel NTSC */
1083 { "spal", 768, 576 }, /* square pixel PAL */
1084 { "film", 352, 240 },
1085 { "ntsc-film", 352, 240 },
1086 { "sqcif", 128, 96 },
1087 { "qcif", 176, 144 },
1088 { "cif", 352, 288 },
1089 { "4cif", 704, 576 },
1090 { "16cif", 1408,1152 },
1091 { "qqvga", 160, 120 },
1092 { "qvga", 320, 240 },
1093 { "vga", 640, 480 },
1094 { "svga", 800, 600 },
1095 { "xga", 1024, 768 },
1096 { "uxga", 1600,1200 },
1097 { "qxga", 2048,1536 },
1098 { "sxga", 1280,1024 },
1099 { "qsxga", 2560,2048 },
1100 { "hsxga", 5120,4096 },
1101 { "wvga", 852, 480 },
1102 { "wxga", 1366, 768 },
1103 { "wsxga", 1600,1024 },
1104 { "wuxga", 1920,1200 },
1105 { "woxga", 2560,1600 },
1106 { "wqsxga", 3200,2048 },
1107 { "wquxga", 3840,2400 },
1108 { "whsxga", 6400,4096 },
1109 { "whuxga", 7680,4800 },
1110 { "cga", 320, 200 },
1111 { "ega", 640, 350 },
1112 { "hd480", 852, 480 },
1113 { "hd720", 1280, 720 },
1114 { "hd1080", 1920,1080 },
1117 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1118 { "ntsc", 30000, 1001 },
1120 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1121 { "qpal", 25, 1 }, /* VCD compliant PAL */
1122 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1123 { "spal", 25, 1 }, /* square pixel PAL */
1125 { "ntsc-film", 24000, 1001 },
1128 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1131 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1133 int frame_width = 0, frame_height = 0;
1136 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1137 frame_width = video_frame_size_abbrs[i].width;
1138 frame_height = video_frame_size_abbrs[i].height;
1144 frame_width = strtol(p, &p, 10);
1147 frame_height = strtol(p, &p, 10);
1149 if (frame_width <= 0 || frame_height <= 0)
1151 *width_ptr = frame_width;
1152 *height_ptr = frame_height;
1156 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1159 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1162 /* First, we check our abbreviation table */
1163 for (i = 0; i < n; ++i)
1164 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1165 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1166 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1170 /* Then, we try to parse it as fraction */
1171 cp = strchr(arg, '/');
1173 cp = strchr(arg, ':');
1176 frame_rate->num = strtol(arg, &cpp, 10);
1177 if (cpp != arg || cpp == cp)
1178 frame_rate->den = strtol(cp+1, &cpp, 10);
1180 frame_rate->num = 0;
1183 /* Finally we give up and parse it as double */
1184 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1185 frame_rate->den = time_base.den;
1186 frame_rate->num = time_base.num;
1188 if (!frame_rate->num || !frame_rate->den)
1194 void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
1196 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1197 "version to the newest one from SVN. If the problem still "
1198 "occurs, it means that your file has a feature which has not "
1199 "been implemented.", feature);
1201 ff_log_ask_for_sample(avc, NULL);
1203 av_log(avc, AV_LOG_WARNING, "\n");
1206 void ff_log_ask_for_sample(void *avc, const char *msg)
1209 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1210 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1211 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1212 "and contact the ffmpeg-devel mailing list.\n");
1215 static AVHWAccel *first_hwaccel = NULL;
1217 void av_register_hwaccel(AVHWAccel *hwaccel)
1219 AVHWAccel **p = &first_hwaccel;
1223 hwaccel->next = NULL;
1226 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1228 return hwaccel ? hwaccel->next : first_hwaccel;
1231 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1233 AVHWAccel *hwaccel=NULL;
1235 while((hwaccel= av_hwaccel_next(hwaccel))){
1236 if ( hwaccel->id == codec_id
1237 && hwaccel->pix_fmt == pix_fmt)
1243 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1245 if (ff_lockmgr_cb) {
1246 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1252 if (ff_lockmgr_cb) {
1253 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))