2001-07-22 14:18:56 +00:00
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/*
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* utils for libavcodec
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2002-05-25 22:45:33 +00:00
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* Copyright (c) 2001 Fabrice Bellard.
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2003-11-03 13:26:22 +00:00
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* Copyright (c) 2003 Michel Bardiaux for the av_log API
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2001-07-22 14:18:56 +00:00
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*
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2002-05-25 22:45:33 +00:00
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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2001-07-22 14:18:56 +00:00
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*
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2002-05-25 22:45:33 +00:00
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* This library is distributed in the hope that it will be useful,
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2001-07-22 14:18:56 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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2002-05-25 22:45:33 +00:00
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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2001-07-22 14:18:56 +00:00
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*
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2002-05-25 22:45:33 +00:00
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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2001-07-22 14:18:56 +00:00
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*/
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2003-03-06 11:32:04 +00:00
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/**
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* @file utils.c
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* utils.
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*/
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2001-07-22 14:18:56 +00:00
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#include "avcodec.h"
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2002-05-18 22:59:50 +00:00
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#include "dsputil.h"
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2002-04-24 01:24:06 +00:00
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#include "mpegvideo.h"
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2003-11-03 13:26:22 +00:00
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#include <stdarg.h>
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2001-07-22 14:18:56 +00:00
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2002-11-12 15:00:04 +00:00
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void *av_mallocz(unsigned int size)
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2002-05-18 22:59:50 +00:00
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{
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void *ptr;
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2002-12-04 12:42:25 +00:00
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2002-05-18 22:59:50 +00:00
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ptr = av_malloc(size);
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if (!ptr)
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return NULL;
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memset(ptr, 0, size);
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return ptr;
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}
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2003-01-23 23:03:09 +00:00
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char *av_strdup(const char *s)
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{
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char *ptr;
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int len;
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len = strlen(s) + 1;
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ptr = av_malloc(len);
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if (!ptr)
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return NULL;
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memcpy(ptr, s, len);
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return ptr;
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}
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/**
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* realloc which does nothing if the block is large enough
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*/
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2003-02-10 09:35:32 +00:00
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void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
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2003-01-23 23:03:09 +00:00
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{
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if(min_size < *size)
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return ptr;
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*size= min_size + 10*1024;
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return av_realloc(ptr, *size);
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}
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2002-12-03 19:40:35 +00:00
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/* allocation of static arrays - do not use for normal allocation */
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static unsigned int last_static = 0;
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static char*** array_static = NULL;
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static const unsigned int grow_static = 64; // ^2
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void *__av_mallocz_static(void** location, unsigned int size)
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{
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2003-02-10 09:35:32 +00:00
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unsigned int l = (last_static + grow_static) & ~(grow_static - 1);
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2002-12-03 19:40:35 +00:00
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void *ptr = av_mallocz(size);
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if (!ptr)
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return NULL;
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if (location)
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{
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if (l > last_static)
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2003-01-23 23:03:09 +00:00
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array_static = av_realloc(array_static, l);
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2002-12-03 19:40:35 +00:00
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array_static[last_static++] = (char**) location;
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*location = ptr;
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}
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return ptr;
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}
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/* free all static arrays and reset pointers to 0 */
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2003-05-24 18:48:30 +00:00
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void av_free_static(void)
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2002-12-03 19:40:35 +00:00
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{
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if (array_static)
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{
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unsigned i;
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for (i = 0; i < last_static; i++)
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{
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2003-01-23 23:03:09 +00:00
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av_free(*array_static[i]);
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2002-12-03 19:40:35 +00:00
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*array_static[i] = NULL;
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}
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2003-01-23 23:03:09 +00:00
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av_free(array_static);
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2002-12-03 19:40:35 +00:00
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array_static = 0;
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}
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last_static = 0;
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}
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2002-05-20 16:23:27 +00:00
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/* cannot call it directly because of 'void **' casting is not automatic */
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void __av_freep(void **ptr)
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{
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av_free(*ptr);
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*ptr = NULL;
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}
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2001-07-22 14:18:56 +00:00
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/* encoder management */
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AVCodec *first_avcodec;
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void register_avcodec(AVCodec *format)
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{
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AVCodec **p;
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p = &first_avcodec;
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while (*p != NULL) p = &(*p)->next;
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*p = format;
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format->next = NULL;
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}
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2003-04-25 00:29:48 +00:00
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typedef struct InternalBuffer{
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2002-12-04 10:04:03 +00:00
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int last_pic_num;
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2003-04-25 00:29:48 +00:00
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uint8_t *base[4];
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2002-12-04 10:04:03 +00:00
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uint8_t *data[4];
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2003-10-30 21:05:00 +00:00
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int linesize[4];
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2003-04-25 00:29:48 +00:00
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}InternalBuffer;
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#define INTERNAL_BUFFER_SIZE 32
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2002-12-04 10:04:03 +00:00
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2003-10-15 21:59:08 +00:00
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#define ALIGN(x, a) (((x)+(a)-1)&~((a)-1))
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void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){
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int w_align= 1;
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int h_align= 1;
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switch(s->pix_fmt){
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case PIX_FMT_YUV420P:
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case PIX_FMT_YUV422:
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case PIX_FMT_YUV422P:
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case PIX_FMT_YUV444P:
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case PIX_FMT_GRAY8:
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case PIX_FMT_YUVJ420P:
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case PIX_FMT_YUVJ422P:
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case PIX_FMT_YUVJ444P:
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w_align= 16; //FIXME check for non mpeg style codecs and use less alignment
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h_align= 16;
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break;
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case PIX_FMT_YUV411P:
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w_align=32;
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h_align=8;
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break;
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case PIX_FMT_YUV410P:
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if(s->codec_id == CODEC_ID_SVQ1){
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w_align=64;
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h_align=64;
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}
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break;
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default:
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w_align= 1;
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h_align= 1;
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break;
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}
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*width = ALIGN(*width , w_align);
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*height= ALIGN(*height, h_align);
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}
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2002-12-09 12:03:43 +00:00
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int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
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2002-12-04 10:04:03 +00:00
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int i;
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2003-10-15 21:59:08 +00:00
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int w= s->width;
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int h= s->height;
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2003-04-25 00:29:48 +00:00
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InternalBuffer *buf;
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2003-10-30 21:05:00 +00:00
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int *picture_number;
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2002-12-09 00:29:17 +00:00
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assert(pic->data[0]==NULL);
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2003-04-25 00:29:48 +00:00
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assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
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2002-12-04 10:04:03 +00:00
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2003-04-25 00:29:48 +00:00
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if(s->internal_buffer==NULL){
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s->internal_buffer= av_mallocz(INTERNAL_BUFFER_SIZE*sizeof(InternalBuffer));
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}
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#if 0
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s->internal_buffer= av_fast_realloc(
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s->internal_buffer,
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&s->internal_buffer_size,
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sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/
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);
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#endif
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buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
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2003-10-30 21:05:00 +00:00
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picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE-1]).last_pic_num; //FIXME ugly hack
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(*picture_number)++;
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2003-04-25 00:29:48 +00:00
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if(buf->base[0]){
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2003-10-30 21:05:00 +00:00
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pic->age= *picture_number - buf->last_pic_num;
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buf->last_pic_num= *picture_number;
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2002-12-04 10:04:03 +00:00
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}else{
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2003-10-15 21:59:08 +00:00
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int h_chroma_shift, v_chroma_shift;
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int s_align, pixel_size;
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2002-12-04 10:04:03 +00:00
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avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
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2003-10-15 21:59:08 +00:00
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2002-12-04 10:04:03 +00:00
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switch(s->pix_fmt){
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2003-05-30 13:27:21 +00:00
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case PIX_FMT_RGB555:
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case PIX_FMT_RGB565:
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2002-12-04 10:04:03 +00:00
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case PIX_FMT_YUV422:
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pixel_size=2;
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break;
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case PIX_FMT_RGB24:
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case PIX_FMT_BGR24:
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pixel_size=3;
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break;
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case PIX_FMT_RGBA32:
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pixel_size=4;
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break;
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default:
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pixel_size=1;
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}
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2003-10-15 21:59:08 +00:00
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avcodec_align_dimensions(s, &w, &h);
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#if defined(ARCH_POWERPC) || defined(HAVE_MMI) //FIXME some cleaner check
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s_align= 16;
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#else
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s_align= 8;
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#endif
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2002-12-04 10:04:03 +00:00
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if(!(s->flags&CODEC_FLAG_EMU_EDGE)){
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w+= EDGE_WIDTH*2;
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h+= EDGE_WIDTH*2;
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}
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2003-04-25 00:29:48 +00:00
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buf->last_pic_num= -256*256*256*64;
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2002-12-04 10:04:03 +00:00
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for(i=0; i<3; i++){
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2003-04-02 10:18:29 +00:00
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const int h_shift= i==0 ? 0 : h_chroma_shift;
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const int v_shift= i==0 ? 0 : v_chroma_shift;
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2002-12-04 10:04:03 +00:00
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2003-10-30 21:05:00 +00:00
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buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, s_align);
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2002-12-04 10:04:03 +00:00
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2003-10-30 21:05:00 +00:00
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buf->base[i]= av_mallocz((buf->linesize[i]*h>>v_shift)+16); //FIXME 16
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2003-04-25 00:29:48 +00:00
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if(buf->base[i]==NULL) return -1;
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2003-10-30 21:05:00 +00:00
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memset(buf->base[i], 128, buf->linesize[i]*h>>v_shift);
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2002-12-04 10:04:03 +00:00
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if(s->flags&CODEC_FLAG_EMU_EDGE)
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2003-04-25 00:29:48 +00:00
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buf->data[i] = buf->base[i];
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2002-12-04 10:04:03 +00:00
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else
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2003-10-30 21:05:00 +00:00
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buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), s_align);
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2002-12-04 10:04:03 +00:00
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}
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pic->age= 256*256*256*64;
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}
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2003-10-30 21:05:00 +00:00
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pic->type= FF_BUFFER_TYPE_INTERNAL;
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2002-12-04 10:04:03 +00:00
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2003-04-25 00:29:48 +00:00
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for(i=0; i<4; i++){
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pic->base[i]= buf->base[i];
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pic->data[i]= buf->data[i];
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2003-10-30 21:05:00 +00:00
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pic->linesize[i]= buf->linesize[i];
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2003-04-25 00:29:48 +00:00
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}
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s->internal_buffer_count++;
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2002-12-04 10:04:03 +00:00
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return 0;
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}
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2002-12-09 12:03:43 +00:00
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void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
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2002-12-04 10:04:03 +00:00
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int i;
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2003-04-25 00:29:48 +00:00
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InternalBuffer *buf, *last, temp;
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2002-12-09 00:29:17 +00:00
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assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
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2003-08-05 10:19:43 +00:00
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assert(s->internal_buffer_count);
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2003-04-25 00:29:48 +00:00
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2003-09-09 22:59:16 +00:00
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buf = NULL; /* avoids warning */
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2003-04-25 00:29:48 +00:00
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for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize
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buf= &((InternalBuffer*)s->internal_buffer)[i];
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if(buf->data[0] == pic->data[0])
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break;
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}
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assert(i < s->internal_buffer_count);
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s->internal_buffer_count--;
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last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count];
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temp= *buf;
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*buf= *last;
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*last= temp;
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for(i=0; i<3; i++){
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2002-12-04 10:04:03 +00:00
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pic->data[i]=NULL;
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2003-04-25 00:29:48 +00:00
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// pic->base[i]=NULL;
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}
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2002-12-04 10:04:03 +00:00
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//printf("R%X\n", pic->opaque);
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}
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2003-01-12 00:48:29 +00:00
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enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, enum PixelFormat * fmt){
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return fmt[0];
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}
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|
2002-09-19 09:13:43 +00:00
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void avcodec_get_context_defaults(AVCodecContext *s){
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2002-09-19 18:24:52 +00:00
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s->bit_rate= 800*1000;
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s->bit_rate_tolerance= s->bit_rate*10;
|
2002-09-19 09:13:43 +00:00
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s->qmin= 2;
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s->qmax= 31;
|
2002-12-18 10:09:43 +00:00
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s->mb_qmin= 2;
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s->mb_qmax= 31;
|
2002-09-19 09:13:43 +00:00
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s->rc_eq= "tex^qComp";
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s->qcompress= 0.5;
|
2002-09-19 18:24:52 +00:00
|
|
|
s->max_qdiff= 3;
|
|
|
|
s->b_quant_factor=1.25;
|
|
|
|
s->b_quant_offset=1.25;
|
2002-09-19 20:22:39 +00:00
|
|
|
s->i_quant_factor=-0.8;
|
2002-09-19 18:24:52 +00:00
|
|
|
s->i_quant_offset=0.0;
|
2002-10-13 13:16:04 +00:00
|
|
|
s->error_concealment= 3;
|
2002-10-22 23:43:25 +00:00
|
|
|
s->error_resilience= 1;
|
2002-10-13 13:16:04 +00:00
|
|
|
s->workaround_bugs= FF_BUG_AUTODETECT;
|
2003-03-12 15:16:19 +00:00
|
|
|
s->frame_rate_base= 1;
|
|
|
|
s->frame_rate = 25;
|
2002-10-22 23:43:25 +00:00
|
|
|
s->gop_size= 50;
|
|
|
|
s->me_method= ME_EPZS;
|
2002-12-04 10:04:03 +00:00
|
|
|
s->get_buffer= avcodec_default_get_buffer;
|
|
|
|
s->release_buffer= avcodec_default_release_buffer;
|
2003-01-12 00:48:29 +00:00
|
|
|
s->get_format= avcodec_default_get_format;
|
2003-01-05 15:57:10 +00:00
|
|
|
s->me_subpel_quality=8;
|
2003-10-07 11:32:40 +00:00
|
|
|
s->lmin= FF_QP2LAMBDA * s->qmin;
|
|
|
|
s->lmax= FF_QP2LAMBDA * s->qmax;
|
2003-10-20 20:23:46 +00:00
|
|
|
s->sample_aspect_ratio= (AVRational){0,1};
|
2003-03-22 12:09:02 +00:00
|
|
|
|
|
|
|
s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
|
|
|
|
s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
|
2003-10-30 05:40:58 +00:00
|
|
|
s->palctrl = NULL;
|
2002-09-19 09:13:43 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* allocates a AVCodecContext and set it to defaults.
|
|
|
|
* this can be deallocated by simply calling free()
|
|
|
|
*/
|
2002-09-28 01:49:37 +00:00
|
|
|
AVCodecContext *avcodec_alloc_context(void){
|
2002-09-19 09:13:43 +00:00
|
|
|
AVCodecContext *avctx= av_mallocz(sizeof(AVCodecContext));
|
|
|
|
|
|
|
|
if(avctx==NULL) return NULL;
|
|
|
|
|
|
|
|
avcodec_get_context_defaults(avctx);
|
|
|
|
|
|
|
|
return avctx;
|
|
|
|
}
|
|
|
|
|
2002-12-04 10:04:03 +00:00
|
|
|
/**
|
2002-12-09 12:03:43 +00:00
|
|
|
* allocates a AVPFrame and set it to defaults.
|
2002-12-04 10:04:03 +00:00
|
|
|
* this can be deallocated by simply calling free()
|
|
|
|
*/
|
2002-12-09 12:03:43 +00:00
|
|
|
AVFrame *avcodec_alloc_frame(void){
|
|
|
|
AVFrame *pic= av_mallocz(sizeof(AVFrame));
|
2002-12-04 10:04:03 +00:00
|
|
|
|
|
|
|
return pic;
|
|
|
|
}
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
2003-09-10 08:20:14 +00:00
|
|
|
if(avctx->codec)
|
|
|
|
return -1;
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
avctx->codec = codec;
|
2002-12-09 18:54:09 +00:00
|
|
|
avctx->codec_id = codec->id;
|
2001-07-22 14:18:56 +00:00
|
|
|
avctx->frame_number = 0;
|
2002-05-09 01:24:27 +00:00
|
|
|
if (codec->priv_data_size > 0) {
|
|
|
|
avctx->priv_data = av_mallocz(codec->priv_data_size);
|
|
|
|
if (!avctx->priv_data)
|
|
|
|
return -ENOMEM;
|
|
|
|
} else {
|
|
|
|
avctx->priv_data = NULL;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
ret = avctx->codec->init(avctx);
|
|
|
|
if (ret < 0) {
|
2002-05-18 22:59:50 +00:00
|
|
|
av_freep(&avctx->priv_data);
|
2001-07-22 14:18:56 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2003-02-11 16:35:48 +00:00
|
|
|
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
2001-07-22 14:18:56 +00:00
|
|
|
const short *samples)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
|
|
|
|
avctx->frame_number++;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2003-02-11 16:35:48 +00:00
|
|
|
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
2002-12-09 12:03:43 +00:00
|
|
|
const AVFrame *pict)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
|
2002-10-31 12:11:53 +00:00
|
|
|
|
|
|
|
emms_c(); //needed to avoid a emms_c() call before every return;
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
avctx->frame_number++;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2003-05-12 23:03:00 +00:00
|
|
|
/**
|
|
|
|
* decode a frame.
|
|
|
|
* @param buf bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE larger then the actual read bytes
|
|
|
|
* because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
|
|
|
|
* @param buf_size the size of the buffer in bytes
|
|
|
|
* @param got_picture_ptr zero if no frame could be decompressed, Otherwise, it is non zero
|
|
|
|
* @return -1 if error, otherwise return the number of
|
|
|
|
* bytes used.
|
|
|
|
*/
|
2002-12-09 12:03:43 +00:00
|
|
|
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
|
2001-07-22 14:18:56 +00:00
|
|
|
int *got_picture_ptr,
|
2003-02-11 16:35:48 +00:00
|
|
|
uint8_t *buf, int buf_size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
int ret;
|
2002-12-04 10:04:03 +00:00
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
|
|
|
|
buf, buf_size);
|
2002-10-31 12:11:53 +00:00
|
|
|
|
|
|
|
emms_c(); //needed to avoid a emms_c() call before every return;
|
2002-12-04 10:04:03 +00:00
|
|
|
|
2002-03-16 02:41:00 +00:00
|
|
|
if (*got_picture_ptr)
|
|
|
|
avctx->frame_number++;
|
2001-07-22 14:18:56 +00:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* decode an audio frame. return -1 if error, otherwise return the
|
|
|
|
*number of bytes used. If no frame could be decompressed,
|
|
|
|
*frame_size_ptr is zero. Otherwise, it is the decompressed frame
|
|
|
|
*size in BYTES. */
|
2003-02-11 16:35:48 +00:00
|
|
|
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
|
2001-07-22 14:18:56 +00:00
|
|
|
int *frame_size_ptr,
|
2003-02-11 16:35:48 +00:00
|
|
|
uint8_t *buf, int buf_size)
|
2001-07-22 14:18:56 +00:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
|
|
|
|
buf, buf_size);
|
|
|
|
avctx->frame_number++;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int avcodec_close(AVCodecContext *avctx)
|
|
|
|
{
|
|
|
|
if (avctx->codec->close)
|
|
|
|
avctx->codec->close(avctx);
|
2002-05-18 22:59:50 +00:00
|
|
|
av_freep(&avctx->priv_data);
|
2001-07-22 14:18:56 +00:00
|
|
|
avctx->codec = NULL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVCodec *avcodec_find_encoder(enum CodecID id)
|
|
|
|
{
|
|
|
|
AVCodec *p;
|
|
|
|
p = first_avcodec;
|
|
|
|
while (p) {
|
|
|
|
if (p->encode != NULL && p->id == id)
|
|
|
|
return p;
|
|
|
|
p = p->next;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2001-12-23 22:25:18 +00:00
|
|
|
AVCodec *avcodec_find_encoder_by_name(const char *name)
|
|
|
|
{
|
|
|
|
AVCodec *p;
|
|
|
|
p = first_avcodec;
|
|
|
|
while (p) {
|
|
|
|
if (p->encode != NULL && strcmp(name,p->name) == 0)
|
|
|
|
return p;
|
|
|
|
p = p->next;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
AVCodec *avcodec_find_decoder(enum CodecID id)
|
|
|
|
{
|
|
|
|
AVCodec *p;
|
|
|
|
p = first_avcodec;
|
|
|
|
while (p) {
|
|
|
|
if (p->decode != NULL && p->id == id)
|
|
|
|
return p;
|
|
|
|
p = p->next;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVCodec *avcodec_find_decoder_by_name(const char *name)
|
|
|
|
{
|
|
|
|
AVCodec *p;
|
|
|
|
p = first_avcodec;
|
|
|
|
while (p) {
|
|
|
|
if (p->decode != NULL && strcmp(name,p->name) == 0)
|
|
|
|
return p;
|
|
|
|
p = p->next;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVCodec *avcodec_find(enum CodecID id)
|
|
|
|
{
|
|
|
|
AVCodec *p;
|
|
|
|
p = first_avcodec;
|
|
|
|
while (p) {
|
|
|
|
if (p->id == id)
|
|
|
|
return p;
|
|
|
|
p = p->next;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
|
|
|
|
{
|
|
|
|
const char *codec_name;
|
|
|
|
AVCodec *p;
|
|
|
|
char buf1[32];
|
2002-04-22 19:57:26 +00:00
|
|
|
char channels_str[100];
|
2001-09-23 17:16:51 +00:00
|
|
|
int bitrate;
|
2001-07-22 14:18:56 +00:00
|
|
|
|
|
|
|
if (encode)
|
|
|
|
p = avcodec_find_encoder(enc->codec_id);
|
|
|
|
else
|
|
|
|
p = avcodec_find_decoder(enc->codec_id);
|
|
|
|
|
|
|
|
if (p) {
|
|
|
|
codec_name = p->name;
|
2003-09-08 22:49:26 +00:00
|
|
|
if (!encode && enc->codec_id == CODEC_ID_MP3) {
|
|
|
|
if (enc->sub_id == 2)
|
|
|
|
codec_name = "mp2";
|
|
|
|
else if (enc->sub_id == 1)
|
|
|
|
codec_name = "mp1";
|
|
|
|
}
|
2003-10-29 14:08:18 +00:00
|
|
|
} else if (enc->codec_id == CODEC_ID_MPEG2TS) {
|
|
|
|
/* fake mpeg2 transport stream codec (currently not
|
|
|
|
registered) */
|
|
|
|
codec_name = "mpeg2ts";
|
2001-07-22 14:18:56 +00:00
|
|
|
} else if (enc->codec_name[0] != '\0') {
|
|
|
|
codec_name = enc->codec_name;
|
|
|
|
} else {
|
|
|
|
/* output avi tags */
|
|
|
|
if (enc->codec_type == CODEC_TYPE_VIDEO) {
|
|
|
|
snprintf(buf1, sizeof(buf1), "%c%c%c%c",
|
|
|
|
enc->codec_tag & 0xff,
|
|
|
|
(enc->codec_tag >> 8) & 0xff,
|
|
|
|
(enc->codec_tag >> 16) & 0xff,
|
|
|
|
(enc->codec_tag >> 24) & 0xff);
|
|
|
|
} else {
|
|
|
|
snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag);
|
|
|
|
}
|
|
|
|
codec_name = buf1;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch(enc->codec_type) {
|
|
|
|
case CODEC_TYPE_VIDEO:
|
|
|
|
snprintf(buf, buf_size,
|
|
|
|
"Video: %s%s",
|
2003-07-29 02:09:12 +00:00
|
|
|
codec_name, enc->mb_decision ? " (hq)" : "");
|
2001-08-11 19:04:31 +00:00
|
|
|
if (enc->codec_id == CODEC_ID_RAWVIDEO) {
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
|
|
", %s",
|
2003-01-11 00:07:06 +00:00
|
|
|
avcodec_get_pix_fmt_name(enc->pix_fmt));
|
2001-08-11 19:04:31 +00:00
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
if (enc->width) {
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
|
|
", %dx%d, %0.2f fps",
|
|
|
|
enc->width, enc->height,
|
2003-03-12 15:16:19 +00:00
|
|
|
(float)enc->frame_rate / enc->frame_rate_base);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
2002-10-10 17:12:55 +00:00
|
|
|
if (encode) {
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
|
|
", q=%d-%d", enc->qmin, enc->qmax);
|
|
|
|
}
|
2001-09-23 17:16:51 +00:00
|
|
|
bitrate = enc->bit_rate;
|
2001-07-22 14:18:56 +00:00
|
|
|
break;
|
|
|
|
case CODEC_TYPE_AUDIO:
|
|
|
|
snprintf(buf, buf_size,
|
|
|
|
"Audio: %s",
|
|
|
|
codec_name);
|
2002-04-09 04:52:49 +00:00
|
|
|
switch (enc->channels) {
|
|
|
|
case 1:
|
2002-04-22 19:57:26 +00:00
|
|
|
strcpy(channels_str, "mono");
|
2002-04-09 04:52:49 +00:00
|
|
|
break;
|
|
|
|
case 2:
|
2002-04-22 19:57:26 +00:00
|
|
|
strcpy(channels_str, "stereo");
|
2002-04-09 04:52:49 +00:00
|
|
|
break;
|
|
|
|
case 6:
|
2002-04-22 19:57:26 +00:00
|
|
|
strcpy(channels_str, "5:1");
|
2002-04-09 04:52:49 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
sprintf(channels_str, "%d channels", enc->channels);
|
|
|
|
break;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
if (enc->sample_rate) {
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
|
|
", %d Hz, %s",
|
|
|
|
enc->sample_rate,
|
2002-04-09 04:52:49 +00:00
|
|
|
channels_str);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
2002-04-09 04:52:49 +00:00
|
|
|
|
2001-09-23 17:16:51 +00:00
|
|
|
/* for PCM codecs, compute bitrate directly */
|
|
|
|
switch(enc->codec_id) {
|
|
|
|
case CODEC_ID_PCM_S16LE:
|
|
|
|
case CODEC_ID_PCM_S16BE:
|
|
|
|
case CODEC_ID_PCM_U16LE:
|
|
|
|
case CODEC_ID_PCM_U16BE:
|
2001-09-24 23:29:46 +00:00
|
|
|
bitrate = enc->sample_rate * enc->channels * 16;
|
2001-09-23 17:16:51 +00:00
|
|
|
break;
|
|
|
|
case CODEC_ID_PCM_S8:
|
|
|
|
case CODEC_ID_PCM_U8:
|
|
|
|
case CODEC_ID_PCM_ALAW:
|
|
|
|
case CODEC_ID_PCM_MULAW:
|
2001-09-24 23:29:46 +00:00
|
|
|
bitrate = enc->sample_rate * enc->channels * 8;
|
2001-09-23 17:16:51 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
bitrate = enc->bit_rate;
|
|
|
|
break;
|
|
|
|
}
|
2001-07-22 14:18:56 +00:00
|
|
|
break;
|
2003-10-29 14:08:18 +00:00
|
|
|
case CODEC_TYPE_DATA:
|
|
|
|
snprintf(buf, buf_size, "Data: %s", codec_name);
|
|
|
|
bitrate = enc->bit_rate;
|
|
|
|
break;
|
2001-07-22 14:18:56 +00:00
|
|
|
default:
|
2002-07-27 03:08:04 +00:00
|
|
|
av_abort();
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
2002-10-10 17:12:55 +00:00
|
|
|
if (encode) {
|
|
|
|
if (enc->flags & CODEC_FLAG_PASS1)
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
|
|
", pass 1");
|
|
|
|
if (enc->flags & CODEC_FLAG_PASS2)
|
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
|
|
", pass 2");
|
|
|
|
}
|
2001-09-23 17:16:51 +00:00
|
|
|
if (bitrate != 0) {
|
2001-07-22 14:18:56 +00:00
|
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
2001-09-23 17:16:51 +00:00
|
|
|
", %d kb/s", bitrate / 1000);
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2002-05-05 09:56:13 +00:00
|
|
|
unsigned avcodec_version( void )
|
|
|
|
{
|
|
|
|
return LIBAVCODEC_VERSION_INT;
|
|
|
|
}
|
2001-08-11 19:04:31 +00:00
|
|
|
|
2002-05-12 15:53:25 +00:00
|
|
|
unsigned avcodec_build( void )
|
|
|
|
{
|
|
|
|
return LIBAVCODEC_BUILD;
|
|
|
|
}
|
|
|
|
|
2001-07-22 14:18:56 +00:00
|
|
|
/* must be called before any other functions */
|
|
|
|
void avcodec_init(void)
|
|
|
|
{
|
2002-04-01 13:24:47 +00:00
|
|
|
static int inited = 0;
|
|
|
|
|
|
|
|
if (inited != 0)
|
|
|
|
return;
|
|
|
|
inited = 1;
|
|
|
|
|
2003-04-20 16:16:52 +00:00
|
|
|
dsputil_static_init();
|
2001-07-22 14:18:56 +00:00
|
|
|
}
|
|
|
|
|
2003-07-17 12:29:07 +00:00
|
|
|
/**
|
|
|
|
* Flush buffers, should be called when seeking or when swicthing to a different stream.
|
|
|
|
*/
|
2002-04-24 01:24:06 +00:00
|
|
|
void avcodec_flush_buffers(AVCodecContext *avctx)
|
|
|
|
{
|
2003-07-17 12:29:07 +00:00
|
|
|
if(avctx->codec->flush)
|
|
|
|
avctx->codec->flush(avctx);
|
2002-04-24 01:24:06 +00:00
|
|
|
}
|
|
|
|
|
2003-04-25 00:29:48 +00:00
|
|
|
void avcodec_default_free_buffers(AVCodecContext *s){
|
|
|
|
int i, j;
|
|
|
|
|
|
|
|
if(s->internal_buffer==NULL) return;
|
|
|
|
|
|
|
|
for(i=0; i<INTERNAL_BUFFER_SIZE; i++){
|
|
|
|
InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i];
|
|
|
|
for(j=0; j<4; j++){
|
|
|
|
av_freep(&buf->base[j]);
|
|
|
|
buf->data[j]= NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
av_freep(&s->internal_buffer);
|
|
|
|
|
|
|
|
s->internal_buffer_count=0;
|
|
|
|
}
|
|
|
|
|
2003-05-14 23:08:01 +00:00
|
|
|
char av_get_pict_type_char(int pict_type){
|
|
|
|
switch(pict_type){
|
|
|
|
case I_TYPE: return 'I';
|
|
|
|
case P_TYPE: return 'P';
|
|
|
|
case B_TYPE: return 'B';
|
|
|
|
case S_TYPE: return 'S';
|
|
|
|
case SI_TYPE:return 'i';
|
|
|
|
case SP_TYPE:return 'p';
|
|
|
|
default: return '?';
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-03-12 15:16:19 +00:00
|
|
|
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
|
|
|
|
int exact=1, sign=0;
|
2003-10-20 22:33:53 +00:00
|
|
|
int64_t gcd;
|
2003-03-12 15:16:19 +00:00
|
|
|
|
|
|
|
assert(den != 0);
|
|
|
|
|
|
|
|
if(den < 0){
|
|
|
|
den= -den;
|
|
|
|
nom= -nom;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(nom < 0){
|
|
|
|
nom= -nom;
|
|
|
|
sign= 1;
|
|
|
|
}
|
|
|
|
|
2003-10-20 22:33:53 +00:00
|
|
|
gcd = ff_gcd(nom, den);
|
|
|
|
nom /= gcd;
|
|
|
|
den /= gcd;
|
2003-03-12 15:16:19 +00:00
|
|
|
|
2003-10-20 22:33:53 +00:00
|
|
|
if(nom > max || den > max){
|
|
|
|
AVRational a0={0,1}, a1={1,0};
|
|
|
|
exact=0;
|
|
|
|
|
|
|
|
for(;;){
|
|
|
|
int64_t x= nom / den;
|
|
|
|
int64_t a2n= x*a1.num + a0.num;
|
|
|
|
int64_t a2d= x*a1.den + a0.den;
|
|
|
|
|
|
|
|
if(a2n > max || a2d > max) break;
|
|
|
|
|
|
|
|
nom %= den;
|
|
|
|
|
|
|
|
a0= a1;
|
|
|
|
a1= (AVRational){a2n, a2d};
|
|
|
|
if(nom==0) break;
|
|
|
|
x= nom; nom=den; den=x;
|
|
|
|
}
|
|
|
|
nom= a1.num;
|
|
|
|
den= a1.den;
|
2003-03-12 15:16:19 +00:00
|
|
|
}
|
|
|
|
|
2003-10-20 22:33:53 +00:00
|
|
|
assert(ff_gcd(nom, den) == 1);
|
|
|
|
|
2003-03-12 15:16:19 +00:00
|
|
|
if(sign) nom= -nom;
|
|
|
|
|
|
|
|
*dst_nom = nom;
|
|
|
|
*dst_den = den;
|
|
|
|
|
|
|
|
return exact;
|
|
|
|
}
|
|
|
|
|
|
|
|
int64_t av_rescale(int64_t a, int b, int c){
|
|
|
|
uint64_t h, l;
|
|
|
|
assert(c > 0);
|
|
|
|
assert(b >=0);
|
|
|
|
|
|
|
|
if(a<0) return -av_rescale(-a, b, c);
|
|
|
|
|
|
|
|
h= a>>32;
|
|
|
|
if(h==0) return a*b/c;
|
|
|
|
|
|
|
|
l= a&0xFFFFFFFF;
|
|
|
|
l *= b;
|
|
|
|
h *= b;
|
|
|
|
|
|
|
|
l += (h%c)<<32;
|
|
|
|
|
|
|
|
return ((h/c)<<32) + l/c;
|
|
|
|
}
|
2003-11-03 13:26:22 +00:00
|
|
|
|
|
|
|
/* av_log API */
|
|
|
|
|
|
|
|
#ifdef AV_LOG_TRAP_PRINTF
|
|
|
|
#undef stderr
|
|
|
|
#undef fprintf
|
|
|
|
#endif
|
|
|
|
|
|
|
|
static int av_log_level = AV_LOG_DEBUG;
|
|
|
|
|
|
|
|
static void av_log_default_callback(AVCodecContext* avctx, int level, const char* fmt, va_list vl)
|
|
|
|
{
|
2003-11-03 13:58:26 +00:00
|
|
|
static int print_prefix=1;
|
|
|
|
|
2003-11-03 13:26:22 +00:00
|
|
|
if(level>av_log_level)
|
|
|
|
return;
|
2003-11-03 13:58:26 +00:00
|
|
|
if(avctx && print_prefix)
|
2003-11-03 13:26:22 +00:00
|
|
|
fprintf(stderr, "[%s @ %p]", avctx->codec->name, avctx);
|
2003-11-03 13:58:26 +00:00
|
|
|
|
|
|
|
print_prefix= (int)strstr(fmt, "\n");
|
|
|
|
|
2003-11-03 13:26:22 +00:00
|
|
|
vfprintf(stderr, fmt, vl);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void (*av_log_callback)(AVCodecContext*, int, const char*, va_list) = av_log_default_callback;
|
|
|
|
|
|
|
|
void av_log(AVCodecContext* avctx, int level, const char *fmt, ...)
|
|
|
|
{
|
|
|
|
va_list vl;
|
|
|
|
va_start(vl, fmt);
|
|
|
|
av_vlog(avctx, level, fmt, vl);
|
|
|
|
va_end(vl);
|
|
|
|
}
|
|
|
|
|
|
|
|
void av_vlog(AVCodecContext* avctx, int level, const char *fmt, va_list vl)
|
|
|
|
{
|
|
|
|
av_log_callback(avctx, level, fmt, vl);
|
|
|
|
}
|
|
|
|
|
|
|
|
int av_log_get_level(void)
|
|
|
|
{
|
|
|
|
return av_log_level;
|
|
|
|
}
|
|
|
|
|
|
|
|
void av_log_set_level(int level)
|
|
|
|
{
|
|
|
|
av_log_level = level;
|
|
|
|
}
|
|
|
|
|
|
|
|
void av_log_set_callback(void (*callback)(AVCodecContext*, int, const char*, va_list))
|
|
|
|
{
|
|
|
|
av_log_callback = callback;
|
|
|
|
}
|
|
|
|
|