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;
561 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
565 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
566 int *got_picture_ptr,
572 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
574 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
575 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
578 emms_c(); //needed to avoid an emms_c() call before every return;
580 if (*got_picture_ptr)
581 avctx->frame_number++;
588 #if LIBAVCODEC_VERSION_MAJOR < 53
589 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
591 const uint8_t *buf, int buf_size)
594 av_init_packet(&avpkt);
596 avpkt.size = buf_size;
598 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
602 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
608 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
609 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
610 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
611 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
614 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
615 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
616 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
620 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
621 avctx->frame_number++;
629 #if LIBAVCODEC_VERSION_MAJOR < 53
630 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
632 const uint8_t *buf, int buf_size)
635 av_init_packet(&avpkt);
637 avpkt.size = buf_size;
639 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
643 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
650 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
652 avctx->frame_number++;
656 int avcodec_close(AVCodecContext *avctx)
658 /* If there is a user-supplied mutex locking routine, call it. */
660 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN))
664 entangled_thread_counter++;
665 if(entangled_thread_counter != 1){
666 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
667 entangled_thread_counter--;
671 if (HAVE_THREADS && avctx->thread_opaque)
672 avcodec_thread_free(avctx);
673 if (avctx->codec->close)
674 avctx->codec->close(avctx);
675 avcodec_default_free_buffers(avctx);
676 av_freep(&avctx->priv_data);
678 entangled_thread_counter--;
680 /* Release any user-supplied mutex. */
682 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
687 AVCodec *avcodec_find_encoder(enum CodecID id)
692 if (p->encode != NULL && p->id == id)
699 AVCodec *avcodec_find_encoder_by_name(const char *name)
706 if (p->encode != NULL && strcmp(name,p->name) == 0)
713 AVCodec *avcodec_find_decoder(enum CodecID id)
718 if (p->decode != NULL && p->id == id)
725 AVCodec *avcodec_find_decoder_by_name(const char *name)
732 if (p->decode != NULL && strcmp(name,p->name) == 0)
739 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
741 const char *codec_name;
745 AVRational display_aspect_ratio;
748 p = avcodec_find_encoder(enc->codec_id);
750 p = avcodec_find_decoder(enc->codec_id);
753 codec_name = p->name;
754 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
755 /* fake mpeg2 transport stream codec (currently not
757 codec_name = "mpeg2ts";
758 } else if (enc->codec_name[0] != '\0') {
759 codec_name = enc->codec_name;
761 /* output avi tags */
762 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
763 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
764 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
765 enc->codec_tag & 0xff,
766 (enc->codec_tag >> 8) & 0xff,
767 (enc->codec_tag >> 16) & 0xff,
768 (enc->codec_tag >> 24) & 0xff,
771 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
776 switch(enc->codec_type) {
777 case CODEC_TYPE_VIDEO:
778 snprintf(buf, buf_size,
780 codec_name, enc->mb_decision ? " (hq)" : "");
781 if (enc->pix_fmt != PIX_FMT_NONE) {
782 snprintf(buf + strlen(buf), buf_size - strlen(buf),
784 avcodec_get_pix_fmt_name(enc->pix_fmt));
787 snprintf(buf + strlen(buf), buf_size - strlen(buf),
789 enc->width, enc->height);
790 if (enc->sample_aspect_ratio.num) {
791 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
792 enc->width*enc->sample_aspect_ratio.num,
793 enc->height*enc->sample_aspect_ratio.den,
795 snprintf(buf + strlen(buf), buf_size - strlen(buf),
796 " [PAR %d:%d DAR %d:%d]",
797 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
798 display_aspect_ratio.num, display_aspect_ratio.den);
800 if(av_log_get_level() >= AV_LOG_DEBUG){
801 int g= av_gcd(enc->time_base.num, enc->time_base.den);
802 snprintf(buf + strlen(buf), buf_size - strlen(buf),
804 enc->time_base.num/g, enc->time_base.den/g);
808 snprintf(buf + strlen(buf), buf_size - strlen(buf),
809 ", q=%d-%d", enc->qmin, enc->qmax);
811 bitrate = enc->bit_rate;
813 case CODEC_TYPE_AUDIO:
814 snprintf(buf, buf_size,
817 if (enc->sample_rate) {
818 snprintf(buf + strlen(buf), buf_size - strlen(buf),
819 ", %d Hz", enc->sample_rate);
821 av_strlcat(buf, ", ", buf_size);
822 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
823 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
824 snprintf(buf + strlen(buf), buf_size - strlen(buf),
825 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
828 /* for PCM codecs, compute bitrate directly */
829 switch(enc->codec_id) {
830 case CODEC_ID_PCM_F64BE:
831 case CODEC_ID_PCM_F64LE:
832 bitrate = enc->sample_rate * enc->channels * 64;
834 case CODEC_ID_PCM_S32LE:
835 case CODEC_ID_PCM_S32BE:
836 case CODEC_ID_PCM_U32LE:
837 case CODEC_ID_PCM_U32BE:
838 case CODEC_ID_PCM_F32BE:
839 case CODEC_ID_PCM_F32LE:
840 bitrate = enc->sample_rate * enc->channels * 32;
842 case CODEC_ID_PCM_S24LE:
843 case CODEC_ID_PCM_S24BE:
844 case CODEC_ID_PCM_U24LE:
845 case CODEC_ID_PCM_U24BE:
846 case CODEC_ID_PCM_S24DAUD:
847 bitrate = enc->sample_rate * enc->channels * 24;
849 case CODEC_ID_PCM_S16LE:
850 case CODEC_ID_PCM_S16BE:
851 case CODEC_ID_PCM_S16LE_PLANAR:
852 case CODEC_ID_PCM_U16LE:
853 case CODEC_ID_PCM_U16BE:
854 bitrate = enc->sample_rate * enc->channels * 16;
856 case CODEC_ID_PCM_S8:
857 case CODEC_ID_PCM_U8:
858 case CODEC_ID_PCM_ALAW:
859 case CODEC_ID_PCM_MULAW:
860 case CODEC_ID_PCM_ZORK:
861 bitrate = enc->sample_rate * enc->channels * 8;
864 bitrate = enc->bit_rate;
868 case CODEC_TYPE_DATA:
869 snprintf(buf, buf_size, "Data: %s", codec_name);
870 bitrate = enc->bit_rate;
872 case CODEC_TYPE_SUBTITLE:
873 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
874 bitrate = enc->bit_rate;
876 case CODEC_TYPE_ATTACHMENT:
877 snprintf(buf, buf_size, "Attachment: %s", codec_name);
878 bitrate = enc->bit_rate;
881 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
885 if (enc->flags & CODEC_FLAG_PASS1)
886 snprintf(buf + strlen(buf), buf_size - strlen(buf),
888 if (enc->flags & CODEC_FLAG_PASS2)
889 snprintf(buf + strlen(buf), buf_size - strlen(buf),
893 snprintf(buf + strlen(buf), buf_size - strlen(buf),
894 ", %d kb/s", bitrate / 1000);
898 unsigned avcodec_version( void )
900 return LIBAVCODEC_VERSION_INT;
903 void avcodec_init(void)
905 static int initialized = 0;
907 if (initialized != 0)
911 dsputil_static_init();
914 void avcodec_flush_buffers(AVCodecContext *avctx)
916 if(avctx->codec->flush)
917 avctx->codec->flush(avctx);
920 void avcodec_default_free_buffers(AVCodecContext *s){
923 if(s->internal_buffer==NULL) return;
925 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
926 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
928 av_freep(&buf->base[j]);
932 av_freep(&s->internal_buffer);
934 s->internal_buffer_count=0;
937 char av_get_pict_type_char(int pict_type){
939 case FF_I_TYPE: return 'I';
940 case FF_P_TYPE: return 'P';
941 case FF_B_TYPE: return 'B';
942 case FF_S_TYPE: return 'S';
943 case FF_SI_TYPE:return 'i';
944 case FF_SP_TYPE:return 'p';
945 case FF_BI_TYPE:return 'b';
950 int av_get_bits_per_sample(enum CodecID codec_id){
952 case CODEC_ID_ADPCM_SBPRO_2:
954 case CODEC_ID_ADPCM_SBPRO_3:
956 case CODEC_ID_ADPCM_SBPRO_4:
957 case CODEC_ID_ADPCM_CT:
959 case CODEC_ID_PCM_ALAW:
960 case CODEC_ID_PCM_MULAW:
961 case CODEC_ID_PCM_S8:
962 case CODEC_ID_PCM_U8:
963 case CODEC_ID_PCM_ZORK:
965 case CODEC_ID_PCM_S16BE:
966 case CODEC_ID_PCM_S16LE:
967 case CODEC_ID_PCM_S16LE_PLANAR:
968 case CODEC_ID_PCM_U16BE:
969 case CODEC_ID_PCM_U16LE:
971 case CODEC_ID_PCM_S24DAUD:
972 case CODEC_ID_PCM_S24BE:
973 case CODEC_ID_PCM_S24LE:
974 case CODEC_ID_PCM_U24BE:
975 case CODEC_ID_PCM_U24LE:
977 case CODEC_ID_PCM_S32BE:
978 case CODEC_ID_PCM_S32LE:
979 case CODEC_ID_PCM_U32BE:
980 case CODEC_ID_PCM_U32LE:
981 case CODEC_ID_PCM_F32BE:
982 case CODEC_ID_PCM_F32LE:
984 case CODEC_ID_PCM_F64BE:
985 case CODEC_ID_PCM_F64LE:
992 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
993 switch (sample_fmt) {
1001 case SAMPLE_FMT_DBL:
1009 int avcodec_thread_init(AVCodecContext *s, int thread_count){
1010 s->thread_count = thread_count;
1015 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
1029 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
1030 * Also, tries to create file in /tmp first, if possible.
1031 * *prefix can be a character constant; *filename will be allocated internally.
1032 * Returns file descriptor of opened file (or -1 on error)
1033 * and opened file name in **filename. */
1034 int av_tempfile(char *prefix, char **filename) {
1037 *filename = tempnam(".", prefix);
1039 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1040 *filename = av_malloc(len);
1042 /* -----common section-----*/
1043 if (*filename == NULL) {
1044 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1048 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1050 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1051 fd = mkstemp(*filename);
1053 snprintf(*filename, len, "./%sXXXXXX", prefix);
1054 fd = mkstemp(*filename);
1057 /* -----common section-----*/
1059 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1062 return fd; /* success */
1068 } VideoFrameSizeAbbr;
1072 int rate_num, rate_den;
1073 } VideoFrameRateAbbr;
1075 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1076 { "ntsc", 720, 480 },
1077 { "pal", 720, 576 },
1078 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1079 { "qpal", 352, 288 }, /* VCD compliant PAL */
1080 { "sntsc", 640, 480 }, /* square pixel NTSC */
1081 { "spal", 768, 576 }, /* square pixel PAL */
1082 { "film", 352, 240 },
1083 { "ntsc-film", 352, 240 },
1084 { "sqcif", 128, 96 },
1085 { "qcif", 176, 144 },
1086 { "cif", 352, 288 },
1087 { "4cif", 704, 576 },
1088 { "16cif", 1408,1152 },
1089 { "qqvga", 160, 120 },
1090 { "qvga", 320, 240 },
1091 { "vga", 640, 480 },
1092 { "svga", 800, 600 },
1093 { "xga", 1024, 768 },
1094 { "uxga", 1600,1200 },
1095 { "qxga", 2048,1536 },
1096 { "sxga", 1280,1024 },
1097 { "qsxga", 2560,2048 },
1098 { "hsxga", 5120,4096 },
1099 { "wvga", 852, 480 },
1100 { "wxga", 1366, 768 },
1101 { "wsxga", 1600,1024 },
1102 { "wuxga", 1920,1200 },
1103 { "woxga", 2560,1600 },
1104 { "wqsxga", 3200,2048 },
1105 { "wquxga", 3840,2400 },
1106 { "whsxga", 6400,4096 },
1107 { "whuxga", 7680,4800 },
1108 { "cga", 320, 200 },
1109 { "ega", 640, 350 },
1110 { "hd480", 852, 480 },
1111 { "hd720", 1280, 720 },
1112 { "hd1080", 1920,1080 },
1115 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1116 { "ntsc", 30000, 1001 },
1118 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1119 { "qpal", 25, 1 }, /* VCD compliant PAL */
1120 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1121 { "spal", 25, 1 }, /* square pixel PAL */
1123 { "ntsc-film", 24000, 1001 },
1126 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1129 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1131 int frame_width = 0, frame_height = 0;
1134 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1135 frame_width = video_frame_size_abbrs[i].width;
1136 frame_height = video_frame_size_abbrs[i].height;
1142 frame_width = strtol(p, &p, 10);
1145 frame_height = strtol(p, &p, 10);
1147 if (frame_width <= 0 || frame_height <= 0)
1149 *width_ptr = frame_width;
1150 *height_ptr = frame_height;
1154 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1157 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1160 /* First, we check our abbreviation table */
1161 for (i = 0; i < n; ++i)
1162 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1163 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1164 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1168 /* Then, we try to parse it as fraction */
1169 cp = strchr(arg, '/');
1171 cp = strchr(arg, ':');
1174 frame_rate->num = strtol(arg, &cpp, 10);
1175 if (cpp != arg || cpp == cp)
1176 frame_rate->den = strtol(cp+1, &cpp, 10);
1178 frame_rate->num = 0;
1181 /* Finally we give up and parse it as double */
1182 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1183 frame_rate->den = time_base.den;
1184 frame_rate->num = time_base.num;
1186 if (!frame_rate->num || !frame_rate->den)
1192 void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
1194 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1195 "version to the newest one from SVN. If the problem still "
1196 "occurs, it means that your file has a feature which has not "
1197 "been implemented.", feature);
1199 ff_log_ask_for_sample(avc, NULL);
1201 av_log(avc, AV_LOG_WARNING, "\n");
1204 void ff_log_ask_for_sample(void *avc, const char *msg)
1207 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1208 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1209 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1210 "and contact the ffmpeg-devel mailing list.\n");
1213 static AVHWAccel *first_hwaccel = NULL;
1215 void av_register_hwaccel(AVHWAccel *hwaccel)
1217 AVHWAccel **p = &first_hwaccel;
1221 hwaccel->next = NULL;
1224 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1226 return hwaccel ? hwaccel->next : first_hwaccel;
1229 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1231 AVHWAccel *hwaccel=NULL;
1233 while((hwaccel= av_hwaccel_next(hwaccel))){
1234 if ( hwaccel->id == codec_id
1235 && hwaccel->pix_fmt == pix_fmt)
1241 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
1243 if (ff_lockmgr_cb) {
1244 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY))
1250 if (ff_lockmgr_cb) {
1251 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE))