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;
69 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
74 *size= FFMAX(17*min_size/16 + 32, min_size);
76 ptr= av_realloc(ptr, *size);
77 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
83 /* encoder management */
84 static AVCodec *first_avcodec = NULL;
86 AVCodec *av_codec_next(AVCodec *c){
88 else return first_avcodec;
91 void avcodec_register(AVCodec *codec)
96 while (*p != NULL) p = &(*p)->next;
101 #if LIBAVCODEC_VERSION_MAJOR < 53
102 void register_avcodec(AVCodec *codec)
104 avcodec_register(codec);
108 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
109 s->coded_width = width;
110 s->coded_height= height;
111 s->width = -((-width )>>s->lowres);
112 s->height= -((-height)>>s->lowres);
115 typedef struct InternalBuffer{
121 enum PixelFormat pix_fmt;
124 #define INTERNAL_BUFFER_SIZE 32
126 #define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
128 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
133 case PIX_FMT_YUV420P:
134 case PIX_FMT_YUYV422:
135 case PIX_FMT_UYVY422:
136 case PIX_FMT_YUV422P:
137 case PIX_FMT_YUV444P:
139 case PIX_FMT_GRAY16BE:
140 case PIX_FMT_GRAY16LE:
141 case PIX_FMT_YUVJ420P:
142 case PIX_FMT_YUVJ422P:
143 case PIX_FMT_YUVJ444P:
144 case PIX_FMT_YUVA420P:
145 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
148 case PIX_FMT_YUV411P:
149 case PIX_FMT_UYYVYY411:
153 case PIX_FMT_YUV410P:
154 if(s->codec_id == CODEC_ID_SVQ1){
159 if(s->codec_id == CODEC_ID_RPZA){
166 if(s->codec_id == CODEC_ID_SMC){
172 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
183 *width = ALIGN(*width , w_align);
184 *height= ALIGN(*height, h_align);
185 if(s->codec_id == CODEC_ID_H264)
186 *height+=2; // some of the optimized chroma MC reads one line too much
189 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
190 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
193 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
197 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
204 if(pic->data[0]!=NULL) {
205 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
208 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) {
209 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n");
213 if(avcodec_check_dimensions(s,w,h))
216 if(s->internal_buffer==NULL){
217 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer));
220 s->internal_buffer= av_fast_realloc(
222 &s->internal_buffer_size,
223 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
227 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
228 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
231 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
233 av_freep(&buf->base[i]);
239 pic->age= *picture_number - buf->last_pic_num;
240 buf->last_pic_num= *picture_number;
242 int h_chroma_shift, v_chroma_shift;
249 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
251 avcodec_align_dimensions(s, &w, &h);
253 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
259 // NOTE: do not align linesizes individually, this breaks e.g. assumptions
260 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
261 ff_fill_linesize(&picture, s->pix_fmt, w);
262 // increase alignment of w for next try (rhs gives the lowest bit set in w)
267 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes
268 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the
269 //picture size unneccessarily in some cases. The solution here is not
270 //pretty and better ideas are welcome!
272 if(s->codec_id == CODEC_ID_SVQ1)
276 stride_align[i] = STRIDE_ALIGN;
277 unaligned |= picture.linesize[i] % stride_align[i];
281 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h);
285 for (i=0; i<3 && picture.data[i+1]; i++)
286 size[i] = picture.data[i+1] - picture.data[i];
287 size[i] = tmpsize - (picture.data[i] - picture.data[0]);
289 buf->last_pic_num= -256*256*256*64;
290 memset(buf->base, 0, sizeof(buf->base));
291 memset(buf->data, 0, sizeof(buf->data));
293 for(i=0; i<4 && size[i]; i++){
294 const int h_shift= i==0 ? 0 : h_chroma_shift;
295 const int v_shift= i==0 ? 0 : v_chroma_shift;
297 buf->linesize[i]= picture.linesize[i];
299 buf->base[i]= av_malloc(size[i]+16); //FIXME 16
300 if(buf->base[i]==NULL) return -1;
301 memset(buf->base[i], 128, size[i]);
303 // no edge if EDEG EMU or not planar YUV
304 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2])
305 buf->data[i] = buf->base[i];
307 buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]);
309 if(size[1] && !size[2])
310 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt);
311 buf->width = s->width;
312 buf->height = s->height;
313 buf->pix_fmt= s->pix_fmt;
314 pic->age= 256*256*256*64;
316 pic->type= FF_BUFFER_TYPE_INTERNAL;
319 pic->base[i]= buf->base[i];
320 pic->data[i]= buf->data[i];
321 pic->linesize[i]= buf->linesize[i];
323 s->internal_buffer_count++;
325 pic->reordered_opaque= s->reordered_opaque;
327 if(s->debug&FF_DEBUG_BUFFERS)
328 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
333 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
335 InternalBuffer *buf, *last;
337 assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
338 assert(s->internal_buffer_count);
340 buf = NULL; /* avoids warning */
341 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
342 buf= &((InternalBuffer*)s->internal_buffer)[i];
343 if(buf->data[0] == pic->data[0])
346 assert(i < s->internal_buffer_count);
347 s->internal_buffer_count--;
348 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
350 FFSWAP(InternalBuffer, *buf, *last);
354 // pic->base[i]=NULL;
356 //printf("R%X\n", pic->opaque);
358 if(s->debug&FF_DEBUG_BUFFERS)
359 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count);
362 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
366 /* If no picture return a new buffer */
367 if(pic->data[0] == NULL) {
368 /* We will copy from buffer, so must be readable */
369 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
370 return s->get_buffer(s, pic);
373 /* If internal buffer type return the same buffer */
374 if(pic->type == FF_BUFFER_TYPE_INTERNAL)
378 * Not internal type and reget_buffer not overridden, emulate cr buffer
381 for(i = 0; i < 4; i++)
382 pic->data[i] = pic->base[i] = NULL;
384 /* Allocate new frame */
385 if (s->get_buffer(s, pic))
387 /* Copy image data from old buffer to new buffer */
388 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
390 s->release_buffer(s, &temp_pic); // Release old frame
394 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){
397 for(i=0; i<count; i++){
398 int r= func(c, (char*)arg + i*size);
404 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){
405 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt))
410 void avcodec_get_frame_defaults(AVFrame *pic){
411 memset(pic, 0, sizeof(AVFrame));
413 pic->pts= AV_NOPTS_VALUE;
417 AVFrame *avcodec_alloc_frame(void){
418 AVFrame *pic= av_malloc(sizeof(AVFrame));
420 if(pic==NULL) return NULL;
422 avcodec_get_frame_defaults(pic);
427 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
431 entangled_thread_counter++;
432 if(entangled_thread_counter != 1){
433 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
437 if(avctx->codec || !codec)
440 if (codec->priv_data_size > 0) {
441 avctx->priv_data = av_mallocz(codec->priv_data_size);
442 if (!avctx->priv_data) {
443 ret = AVERROR(ENOMEM);
447 avctx->priv_data = NULL;
450 if(avctx->coded_width && avctx->coded_height)
451 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
452 else if(avctx->width && avctx->height)
453 avcodec_set_dimensions(avctx, avctx->width, avctx->height);
455 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
456 av_freep(&avctx->priv_data);
457 ret = AVERROR(EINVAL);
461 avctx->codec = codec;
462 avctx->codec_id = codec->id;
463 avctx->frame_number = 0;
464 if(avctx->codec->init){
465 ret = avctx->codec->init(avctx);
467 av_freep(&avctx->priv_data);
474 entangled_thread_counter--;
478 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
479 const short *samples)
481 if(buf_size < FF_MIN_BUFFER_SIZE && 0){
482 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
485 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
486 int ret = avctx->codec->encode(avctx, buf, buf_size, samples);
487 avctx->frame_number++;
493 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
496 if(buf_size < FF_MIN_BUFFER_SIZE){
497 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
500 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
502 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
503 int ret = avctx->codec->encode(avctx, buf, buf_size, pict);
504 avctx->frame_number++;
505 emms_c(); //needed to avoid an emms_c() call before every return;
512 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
513 const AVSubtitle *sub)
516 if(sub->start_display_time) {
517 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
520 if(sub->num_rects == 0 || !sub->rects)
522 ret = avctx->codec->encode(avctx, buf, buf_size, sub);
523 avctx->frame_number++;
527 #if LIBAVCODEC_VERSION_MAJOR < 53
528 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
529 int *got_picture_ptr,
530 const uint8_t *buf, int buf_size)
533 av_init_packet(&avpkt);
535 avpkt.size = buf_size;
537 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt);
541 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
542 int *got_picture_ptr,
548 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
550 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
551 ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
554 emms_c(); //needed to avoid an emms_c() call before every return;
556 if (*got_picture_ptr)
557 avctx->frame_number++;
564 #if LIBAVCODEC_VERSION_MAJOR < 53
565 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
567 const uint8_t *buf, int buf_size)
570 av_init_packet(&avpkt);
572 avpkt.size = buf_size;
574 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt);
578 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
584 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){
585 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough
586 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){
587 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n");
590 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE ||
591 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){
592 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr);
596 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt);
597 avctx->frame_number++;
605 #if LIBAVCODEC_VERSION_MAJOR < 53
606 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
608 const uint8_t *buf, int buf_size)
611 av_init_packet(&avpkt);
613 avpkt.size = buf_size;
615 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt);
619 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
626 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
628 avctx->frame_number++;
632 int avcodec_close(AVCodecContext *avctx)
634 entangled_thread_counter++;
635 if(entangled_thread_counter != 1){
636 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
637 entangled_thread_counter--;
641 if (HAVE_THREADS && avctx->thread_opaque)
642 avcodec_thread_free(avctx);
643 if (avctx->codec->close)
644 avctx->codec->close(avctx);
645 avcodec_default_free_buffers(avctx);
646 av_freep(&avctx->priv_data);
648 entangled_thread_counter--;
652 AVCodec *avcodec_find_encoder(enum CodecID id)
657 if (p->encode != NULL && p->id == id)
664 AVCodec *avcodec_find_encoder_by_name(const char *name)
671 if (p->encode != NULL && strcmp(name,p->name) == 0)
678 AVCodec *avcodec_find_decoder(enum CodecID id)
683 if (p->decode != NULL && p->id == id)
690 AVCodec *avcodec_find_decoder_by_name(const char *name)
697 if (p->decode != NULL && strcmp(name,p->name) == 0)
704 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
706 const char *codec_name;
710 AVRational display_aspect_ratio;
713 p = avcodec_find_encoder(enc->codec_id);
715 p = avcodec_find_decoder(enc->codec_id);
718 codec_name = p->name;
719 } else if (enc->codec_id == CODEC_ID_MPEG2TS) {
720 /* fake mpeg2 transport stream codec (currently not
722 codec_name = "mpeg2ts";
723 } else if (enc->codec_name[0] != '\0') {
724 codec_name = enc->codec_name;
726 /* output avi tags */
727 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF)
728 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){
729 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X",
730 enc->codec_tag & 0xff,
731 (enc->codec_tag >> 8) & 0xff,
732 (enc->codec_tag >> 16) & 0xff,
733 (enc->codec_tag >> 24) & 0xff,
736 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
741 switch(enc->codec_type) {
742 case CODEC_TYPE_VIDEO:
743 snprintf(buf, buf_size,
745 codec_name, enc->mb_decision ? " (hq)" : "");
746 if (enc->pix_fmt != PIX_FMT_NONE) {
747 snprintf(buf + strlen(buf), buf_size - strlen(buf),
749 avcodec_get_pix_fmt_name(enc->pix_fmt));
752 snprintf(buf + strlen(buf), buf_size - strlen(buf),
754 enc->width, enc->height);
755 if (enc->sample_aspect_ratio.num) {
756 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
757 enc->width*enc->sample_aspect_ratio.num,
758 enc->height*enc->sample_aspect_ratio.den,
760 snprintf(buf + strlen(buf), buf_size - strlen(buf),
761 " [PAR %d:%d DAR %d:%d]",
762 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
763 display_aspect_ratio.num, display_aspect_ratio.den);
765 if(av_log_get_level() >= AV_LOG_DEBUG){
766 int g= av_gcd(enc->time_base.num, enc->time_base.den);
767 snprintf(buf + strlen(buf), buf_size - strlen(buf),
769 enc->time_base.num/g, enc->time_base.den/g);
773 snprintf(buf + strlen(buf), buf_size - strlen(buf),
774 ", q=%d-%d", enc->qmin, enc->qmax);
776 bitrate = enc->bit_rate;
778 case CODEC_TYPE_AUDIO:
779 snprintf(buf, buf_size,
782 if (enc->sample_rate) {
783 snprintf(buf + strlen(buf), buf_size - strlen(buf),
784 ", %d Hz", enc->sample_rate);
786 av_strlcat(buf, ", ", buf_size);
787 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
788 if (enc->sample_fmt != SAMPLE_FMT_NONE) {
789 snprintf(buf + strlen(buf), buf_size - strlen(buf),
790 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt));
793 /* for PCM codecs, compute bitrate directly */
794 switch(enc->codec_id) {
795 case CODEC_ID_PCM_F64BE:
796 case CODEC_ID_PCM_F64LE:
797 bitrate = enc->sample_rate * enc->channels * 64;
799 case CODEC_ID_PCM_S32LE:
800 case CODEC_ID_PCM_S32BE:
801 case CODEC_ID_PCM_U32LE:
802 case CODEC_ID_PCM_U32BE:
803 case CODEC_ID_PCM_F32BE:
804 case CODEC_ID_PCM_F32LE:
805 bitrate = enc->sample_rate * enc->channels * 32;
807 case CODEC_ID_PCM_S24LE:
808 case CODEC_ID_PCM_S24BE:
809 case CODEC_ID_PCM_U24LE:
810 case CODEC_ID_PCM_U24BE:
811 case CODEC_ID_PCM_S24DAUD:
812 bitrate = enc->sample_rate * enc->channels * 24;
814 case CODEC_ID_PCM_S16LE:
815 case CODEC_ID_PCM_S16BE:
816 case CODEC_ID_PCM_S16LE_PLANAR:
817 case CODEC_ID_PCM_U16LE:
818 case CODEC_ID_PCM_U16BE:
819 bitrate = enc->sample_rate * enc->channels * 16;
821 case CODEC_ID_PCM_S8:
822 case CODEC_ID_PCM_U8:
823 case CODEC_ID_PCM_ALAW:
824 case CODEC_ID_PCM_MULAW:
825 case CODEC_ID_PCM_ZORK:
826 bitrate = enc->sample_rate * enc->channels * 8;
829 bitrate = enc->bit_rate;
833 case CODEC_TYPE_DATA:
834 snprintf(buf, buf_size, "Data: %s", codec_name);
835 bitrate = enc->bit_rate;
837 case CODEC_TYPE_SUBTITLE:
838 snprintf(buf, buf_size, "Subtitle: %s", codec_name);
839 bitrate = enc->bit_rate;
841 case CODEC_TYPE_ATTACHMENT:
842 snprintf(buf, buf_size, "Attachment: %s", codec_name);
843 bitrate = enc->bit_rate;
846 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
850 if (enc->flags & CODEC_FLAG_PASS1)
851 snprintf(buf + strlen(buf), buf_size - strlen(buf),
853 if (enc->flags & CODEC_FLAG_PASS2)
854 snprintf(buf + strlen(buf), buf_size - strlen(buf),
858 snprintf(buf + strlen(buf), buf_size - strlen(buf),
859 ", %d kb/s", bitrate / 1000);
863 unsigned avcodec_version( void )
865 return LIBAVCODEC_VERSION_INT;
868 void avcodec_init(void)
870 static int initialized = 0;
872 if (initialized != 0)
876 dsputil_static_init();
879 void avcodec_flush_buffers(AVCodecContext *avctx)
881 if(avctx->codec->flush)
882 avctx->codec->flush(avctx);
885 void avcodec_default_free_buffers(AVCodecContext *s){
888 if(s->internal_buffer==NULL) return;
890 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
891 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
893 av_freep(&buf->base[j]);
897 av_freep(&s->internal_buffer);
899 s->internal_buffer_count=0;
902 char av_get_pict_type_char(int pict_type){
904 case FF_I_TYPE: return 'I';
905 case FF_P_TYPE: return 'P';
906 case FF_B_TYPE: return 'B';
907 case FF_S_TYPE: return 'S';
908 case FF_SI_TYPE:return 'i';
909 case FF_SP_TYPE:return 'p';
910 case FF_BI_TYPE:return 'b';
915 int av_get_bits_per_sample(enum CodecID codec_id){
917 case CODEC_ID_ADPCM_SBPRO_2:
919 case CODEC_ID_ADPCM_SBPRO_3:
921 case CODEC_ID_ADPCM_SBPRO_4:
922 case CODEC_ID_ADPCM_CT:
924 case CODEC_ID_PCM_ALAW:
925 case CODEC_ID_PCM_MULAW:
926 case CODEC_ID_PCM_S8:
927 case CODEC_ID_PCM_U8:
928 case CODEC_ID_PCM_ZORK:
930 case CODEC_ID_PCM_S16BE:
931 case CODEC_ID_PCM_S16LE:
932 case CODEC_ID_PCM_S16LE_PLANAR:
933 case CODEC_ID_PCM_U16BE:
934 case CODEC_ID_PCM_U16LE:
936 case CODEC_ID_PCM_S24DAUD:
937 case CODEC_ID_PCM_S24BE:
938 case CODEC_ID_PCM_S24LE:
939 case CODEC_ID_PCM_U24BE:
940 case CODEC_ID_PCM_U24LE:
942 case CODEC_ID_PCM_S32BE:
943 case CODEC_ID_PCM_S32LE:
944 case CODEC_ID_PCM_U32BE:
945 case CODEC_ID_PCM_U32LE:
946 case CODEC_ID_PCM_F32BE:
947 case CODEC_ID_PCM_F32LE:
949 case CODEC_ID_PCM_F64BE:
950 case CODEC_ID_PCM_F64LE:
957 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
958 switch (sample_fmt) {
974 int avcodec_thread_init(AVCodecContext *s, int thread_count){
979 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
993 /* Wrapper to work around the lack of mkstemp() on mingw/cygin.
994 * Also, tries to create file in /tmp first, if possible.
995 * *prefix can be a character constant; *filename will be allocated internally.
996 * Returns file descriptor of opened file (or -1 on error)
997 * and opened file name in **filename. */
998 int av_tempfile(char *prefix, char **filename) {
1001 *filename = tempnam(".", prefix);
1003 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */
1004 *filename = av_malloc(len);
1006 /* -----common section-----*/
1007 if (*filename == NULL) {
1008 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n");
1012 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444);
1014 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix);
1015 fd = mkstemp(*filename);
1017 snprintf(*filename, len, "./%sXXXXXX", prefix);
1018 fd = mkstemp(*filename);
1021 /* -----common section-----*/
1023 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename);
1026 return fd; /* success */
1032 } VideoFrameSizeAbbr;
1036 int rate_num, rate_den;
1037 } VideoFrameRateAbbr;
1039 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = {
1040 { "ntsc", 720, 480 },
1041 { "pal", 720, 576 },
1042 { "qntsc", 352, 240 }, /* VCD compliant NTSC */
1043 { "qpal", 352, 288 }, /* VCD compliant PAL */
1044 { "sntsc", 640, 480 }, /* square pixel NTSC */
1045 { "spal", 768, 576 }, /* square pixel PAL */
1046 { "film", 352, 240 },
1047 { "ntsc-film", 352, 240 },
1048 { "sqcif", 128, 96 },
1049 { "qcif", 176, 144 },
1050 { "cif", 352, 288 },
1051 { "4cif", 704, 576 },
1052 { "16cif", 1408,1152 },
1053 { "qqvga", 160, 120 },
1054 { "qvga", 320, 240 },
1055 { "vga", 640, 480 },
1056 { "svga", 800, 600 },
1057 { "xga", 1024, 768 },
1058 { "uxga", 1600,1200 },
1059 { "qxga", 2048,1536 },
1060 { "sxga", 1280,1024 },
1061 { "qsxga", 2560,2048 },
1062 { "hsxga", 5120,4096 },
1063 { "wvga", 852, 480 },
1064 { "wxga", 1366, 768 },
1065 { "wsxga", 1600,1024 },
1066 { "wuxga", 1920,1200 },
1067 { "woxga", 2560,1600 },
1068 { "wqsxga", 3200,2048 },
1069 { "wquxga", 3840,2400 },
1070 { "whsxga", 6400,4096 },
1071 { "whuxga", 7680,4800 },
1072 { "cga", 320, 200 },
1073 { "ega", 640, 350 },
1074 { "hd480", 852, 480 },
1075 { "hd720", 1280, 720 },
1076 { "hd1080", 1920,1080 },
1079 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= {
1080 { "ntsc", 30000, 1001 },
1082 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */
1083 { "qpal", 25, 1 }, /* VCD compliant PAL */
1084 { "sntsc", 30000, 1001 }, /* square pixel NTSC */
1085 { "spal", 25, 1 }, /* square pixel PAL */
1087 { "ntsc-film", 24000, 1001 },
1090 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str)
1093 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs);
1095 int frame_width = 0, frame_height = 0;
1098 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) {
1099 frame_width = video_frame_size_abbrs[i].width;
1100 frame_height = video_frame_size_abbrs[i].height;
1106 frame_width = strtol(p, &p, 10);
1109 frame_height = strtol(p, &p, 10);
1111 if (frame_width <= 0 || frame_height <= 0)
1113 *width_ptr = frame_width;
1114 *height_ptr = frame_height;
1118 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg)
1121 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs);
1124 /* First, we check our abbreviation table */
1125 for (i = 0; i < n; ++i)
1126 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) {
1127 frame_rate->num = video_frame_rate_abbrs[i].rate_num;
1128 frame_rate->den = video_frame_rate_abbrs[i].rate_den;
1132 /* Then, we try to parse it as fraction */
1133 cp = strchr(arg, '/');
1135 cp = strchr(arg, ':');
1138 frame_rate->num = strtol(arg, &cpp, 10);
1139 if (cpp != arg || cpp == cp)
1140 frame_rate->den = strtol(cp+1, &cpp, 10);
1142 frame_rate->num = 0;
1145 /* Finally we give up and parse it as double */
1146 AVRational time_base = av_d2q(strtod(arg, 0), 1001000);
1147 frame_rate->den = time_base.den;
1148 frame_rate->num = time_base.num;
1150 if (!frame_rate->num || !frame_rate->den)
1156 void ff_log_missing_feature(void *avc, const char *feature, int want_sample)
1158 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg "
1159 "version to the newest one from SVN. If the problem still "
1160 "occurs, it means that your file has a feature which has not "
1161 "been implemented.", feature);
1163 ff_log_ask_for_sample(avc, NULL);
1165 av_log(avc, AV_LOG_WARNING, "\n");
1168 void ff_log_ask_for_sample(void *avc, const char *msg)
1171 av_log(avc, AV_LOG_WARNING, "%s ", msg);
1172 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
1173 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "
1174 "and contact the ffmpeg-devel mailing list.\n");
1177 static AVHWAccel *first_hwaccel = NULL;
1179 void av_register_hwaccel(AVHWAccel *hwaccel)
1181 AVHWAccel **p = &first_hwaccel;
1185 hwaccel->next = NULL;
1188 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel)
1190 return hwaccel ? hwaccel->next : first_hwaccel;
1193 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt)
1195 AVHWAccel *hwaccel=NULL;
1197 while((hwaccel= av_hwaccel_next(hwaccel))){
1198 if ( hwaccel->id == codec_id
1199 && hwaccel->pix_fmt == pix_fmt)