mirror of
https://github.com/FFmpeg/FFmpeg.git
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c11c2bc20b
Originally committed as revision 4489 to svn://svn.ffmpeg.org/ffmpeg/trunk
993 lines
27 KiB
C
993 lines
27 KiB
C
/*
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* utils for libavcodec
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* Copyright (c) 2001 Fabrice Bellard.
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* Copyright (c) 2003 Michel Bardiaux for the av_log API
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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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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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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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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*
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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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*/
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/**
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* @file utils.c
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* utils.
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*/
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#include "avcodec.h"
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#include "dsputil.h"
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#include "mpegvideo.h"
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#include "integer.h"
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#include <stdarg.h>
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#include <limits.h>
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const uint8_t ff_reverse[256]={
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0x00,0x80,0x40,0xC0,0x20,0xA0,0x60,0xE0,0x10,0x90,0x50,0xD0,0x30,0xB0,0x70,0xF0,
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0x08,0x88,0x48,0xC8,0x28,0xA8,0x68,0xE8,0x18,0x98,0x58,0xD8,0x38,0xB8,0x78,0xF8,
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0x04,0x84,0x44,0xC4,0x24,0xA4,0x64,0xE4,0x14,0x94,0x54,0xD4,0x34,0xB4,0x74,0xF4,
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0x0C,0x8C,0x4C,0xCC,0x2C,0xAC,0x6C,0xEC,0x1C,0x9C,0x5C,0xDC,0x3C,0xBC,0x7C,0xFC,
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0x02,0x82,0x42,0xC2,0x22,0xA2,0x62,0xE2,0x12,0x92,0x52,0xD2,0x32,0xB2,0x72,0xF2,
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0x0A,0x8A,0x4A,0xCA,0x2A,0xAA,0x6A,0xEA,0x1A,0x9A,0x5A,0xDA,0x3A,0xBA,0x7A,0xFA,
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0x06,0x86,0x46,0xC6,0x26,0xA6,0x66,0xE6,0x16,0x96,0x56,0xD6,0x36,0xB6,0x76,0xF6,
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0x0E,0x8E,0x4E,0xCE,0x2E,0xAE,0x6E,0xEE,0x1E,0x9E,0x5E,0xDE,0x3E,0xBE,0x7E,0xFE,
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0x01,0x81,0x41,0xC1,0x21,0xA1,0x61,0xE1,0x11,0x91,0x51,0xD1,0x31,0xB1,0x71,0xF1,
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0x09,0x89,0x49,0xC9,0x29,0xA9,0x69,0xE9,0x19,0x99,0x59,0xD9,0x39,0xB9,0x79,0xF9,
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0x05,0x85,0x45,0xC5,0x25,0xA5,0x65,0xE5,0x15,0x95,0x55,0xD5,0x35,0xB5,0x75,0xF5,
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0x0D,0x8D,0x4D,0xCD,0x2D,0xAD,0x6D,0xED,0x1D,0x9D,0x5D,0xDD,0x3D,0xBD,0x7D,0xFD,
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0x03,0x83,0x43,0xC3,0x23,0xA3,0x63,0xE3,0x13,0x93,0x53,0xD3,0x33,0xB3,0x73,0xF3,
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0x0B,0x8B,0x4B,0xCB,0x2B,0xAB,0x6B,0xEB,0x1B,0x9B,0x5B,0xDB,0x3B,0xBB,0x7B,0xFB,
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0x07,0x87,0x47,0xC7,0x27,0xA7,0x67,0xE7,0x17,0x97,0x57,0xD7,0x37,0xB7,0x77,0xF7,
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0x0F,0x8F,0x4F,0xCF,0x2F,0xAF,0x6F,0xEF,0x1F,0x9F,0x5F,0xDF,0x3F,0xBF,0x7F,0xFF,
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};
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static int volatile entangled_thread_counter=0;
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void avcodec_default_free_buffers(AVCodecContext *s);
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void *av_mallocz(unsigned int size)
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{
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void *ptr;
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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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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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void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size)
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{
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if(min_size < *size)
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return ptr;
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*size= FFMAX(17*min_size/16 + 32, min_size);
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return av_realloc(ptr, *size);
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}
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static unsigned int last_static = 0;
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static unsigned int allocated_static = 0;
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static void** array_static = NULL;
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/**
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* allocation of static arrays - do not use for normal allocation.
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*/
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void *av_mallocz_static(unsigned int size)
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{
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void *ptr = av_mallocz(size);
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if(ptr){
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array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
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if(!array_static)
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return NULL;
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array_static[last_static++] = ptr;
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}
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return ptr;
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}
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/**
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* same as above, but does realloc
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*/
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void *av_realloc_static(void *ptr, unsigned int size)
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{
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int i;
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if(!ptr)
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return av_mallocz_static(size);
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/* Look for the old ptr */
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for(i = 0; i < last_static; i++) {
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if(array_static[i] == ptr) {
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array_static[i] = av_realloc(array_static[i], size);
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return array_static[i];
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}
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}
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return NULL;
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}
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/**
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* free all static arrays and reset pointers to 0.
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*/
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void av_free_static(void)
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{
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while(last_static){
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av_freep(&array_static[--last_static]);
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}
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av_freep(&array_static);
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}
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/**
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* Frees memory and sets the pointer to NULL.
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* @param arg pointer to the pointer which should be freed
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*/
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void av_freep(void *arg)
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{
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void **ptr= (void**)arg;
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av_free(*ptr);
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*ptr = NULL;
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}
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/* encoder management */
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AVCodec *first_avcodec = NULL;
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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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void avcodec_set_dimensions(AVCodecContext *s, int width, int height){
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s->coded_width = width;
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s->coded_height= height;
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s->width = -((-width )>>s->lowres);
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s->height= -((-height)>>s->lowres);
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}
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typedef struct InternalBuffer{
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int last_pic_num;
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uint8_t *base[4];
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uint8_t *data[4];
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int linesize[4];
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}InternalBuffer;
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#define INTERNAL_BUFFER_SIZE 32
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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_UYVY422:
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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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case PIX_FMT_UYVY411:
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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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case PIX_FMT_RGB555:
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if(s->codec_id == CODEC_ID_RPZA){
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w_align=4;
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h_align=4;
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}
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case PIX_FMT_PAL8:
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if(s->codec_id == CODEC_ID_SMC){
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w_align=4;
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h_align=4;
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}
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break;
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case PIX_FMT_BGR24:
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if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){
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w_align=4;
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h_align=4;
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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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int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){
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if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/4)
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return 0;
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av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h);
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return -1;
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}
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int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){
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int i;
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int w= s->width;
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int h= s->height;
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InternalBuffer *buf;
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int *picture_number;
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assert(pic->data[0]==NULL);
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assert(INTERNAL_BUFFER_SIZE > s->internal_buffer_count);
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if(avcodec_check_dimensions(s,w,h))
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return -1;
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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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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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if(buf->base[0]){
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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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}else{
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int h_chroma_shift, v_chroma_shift;
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int pixel_size;
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avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift);
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switch(s->pix_fmt){
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case PIX_FMT_RGB555:
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case PIX_FMT_RGB565:
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case PIX_FMT_YUV422:
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case PIX_FMT_UYVY422:
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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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avcodec_align_dimensions(s, &w, &h);
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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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buf->last_pic_num= -256*256*256*64;
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for(i=0; i<3; i++){
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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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//FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
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buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, STRIDE_ALIGN<<(h_chroma_shift-h_shift));
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buf->base[i]= av_malloc((buf->linesize[i]*h>>v_shift)+16); //FIXME 16
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if(buf->base[i]==NULL) return -1;
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memset(buf->base[i], 128, buf->linesize[i]*h>>v_shift);
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if(s->flags&CODEC_FLAG_EMU_EDGE)
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buf->data[i] = buf->base[i];
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else
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buf->data[i] = buf->base[i] + ALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), STRIDE_ALIGN);
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}
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pic->age= 256*256*256*64;
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}
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pic->type= FF_BUFFER_TYPE_INTERNAL;
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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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pic->linesize[i]= buf->linesize[i];
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}
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s->internal_buffer_count++;
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return 0;
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}
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void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){
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int i;
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InternalBuffer *buf, *last, temp;
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assert(pic->type==FF_BUFFER_TYPE_INTERNAL);
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assert(s->internal_buffer_count);
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buf = NULL; /* avoids warning */
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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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pic->data[i]=NULL;
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// pic->base[i]=NULL;
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}
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//printf("R%X\n", pic->opaque);
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}
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int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
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AVFrame temp_pic;
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int i;
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/* If no picture return a new buffer */
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if(pic->data[0] == NULL) {
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/* We will copy from buffer, so must be readable */
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pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
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return s->get_buffer(s, pic);
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}
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/* If internal buffer type return the same buffer */
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if(pic->type == FF_BUFFER_TYPE_INTERNAL)
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return 0;
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/*
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* Not internal type and reget_buffer not overridden, emulate cr buffer
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*/
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temp_pic = *pic;
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for(i = 0; i < 4; i++)
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pic->data[i] = pic->base[i] = NULL;
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pic->opaque = NULL;
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/* Allocate new frame */
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if (s->get_buffer(s, pic))
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return -1;
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/* Copy image data from old buffer to new buffer */
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img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
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s->height);
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s->release_buffer(s, &temp_pic); // Release old frame
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return 0;
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}
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int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
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int i;
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for(i=0; i<count; i++){
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int r= func(c, arg[i]);
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if(ret) ret[i]= r;
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}
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return 0;
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}
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enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
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return fmt[0];
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}
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static const char* context_to_name(void* ptr) {
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AVCodecContext *avc= ptr;
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if(avc && avc->codec && avc->codec->name)
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return avc->codec->name;
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else
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return "NULL";
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}
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static AVClass av_codec_context_class = { "AVCodecContext", context_to_name };
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void avcodec_get_context_defaults(AVCodecContext *s){
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memset(s, 0, sizeof(AVCodecContext));
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s->av_class= &av_codec_context_class;
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s->bit_rate= 800*1000;
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s->bit_rate_tolerance= s->bit_rate*10;
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s->qmin= 2;
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s->qmax= 31;
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s->mb_lmin= FF_QP2LAMBDA * 2;
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s->mb_lmax= FF_QP2LAMBDA * 31;
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s->rc_eq= "tex^qComp";
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s->qcompress= 0.5;
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s->max_qdiff= 3;
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s->b_quant_factor=1.25;
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s->b_quant_offset=1.25;
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s->i_quant_factor=-0.8;
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s->i_quant_offset=0.0;
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s->error_concealment= 3;
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s->error_resilience= 1;
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s->workaround_bugs= FF_BUG_AUTODETECT;
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s->time_base= (AVRational){0,1};
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s->gop_size= 50;
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s->me_method= ME_EPZS;
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s->get_buffer= avcodec_default_get_buffer;
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s->release_buffer= avcodec_default_release_buffer;
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s->get_format= avcodec_default_get_format;
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|
s->execute= avcodec_default_execute;
|
|
s->thread_count=1;
|
|
s->me_subpel_quality=8;
|
|
s->lmin= FF_QP2LAMBDA * s->qmin;
|
|
s->lmax= FF_QP2LAMBDA * s->qmax;
|
|
s->sample_aspect_ratio= (AVRational){0,1};
|
|
s->ildct_cmp= FF_CMP_VSAD;
|
|
s->profile= FF_PROFILE_UNKNOWN;
|
|
s->level= FF_LEVEL_UNKNOWN;
|
|
s->me_penalty_compensation= 256;
|
|
s->pix_fmt= PIX_FMT_NONE;
|
|
|
|
s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
|
|
s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
|
|
s->palctrl = NULL;
|
|
s->reget_buffer= avcodec_default_reget_buffer;
|
|
}
|
|
|
|
/**
|
|
* allocates a AVCodecContext and set it to defaults.
|
|
* this can be deallocated by simply calling free()
|
|
*/
|
|
AVCodecContext *avcodec_alloc_context(void){
|
|
AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
|
|
|
|
if(avctx==NULL) return NULL;
|
|
|
|
avcodec_get_context_defaults(avctx);
|
|
|
|
return avctx;
|
|
}
|
|
|
|
void avcodec_get_frame_defaults(AVFrame *pic){
|
|
memset(pic, 0, sizeof(AVFrame));
|
|
|
|
pic->pts= AV_NOPTS_VALUE;
|
|
pic->key_frame= 1;
|
|
}
|
|
|
|
/**
|
|
* allocates a AVPFrame and set it to defaults.
|
|
* this can be deallocated by simply calling free()
|
|
*/
|
|
AVFrame *avcodec_alloc_frame(void){
|
|
AVFrame *pic= av_malloc(sizeof(AVFrame));
|
|
|
|
if(pic==NULL) return NULL;
|
|
|
|
avcodec_get_frame_defaults(pic);
|
|
|
|
return pic;
|
|
}
|
|
|
|
int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
|
|
{
|
|
int ret= -1;
|
|
|
|
entangled_thread_counter++;
|
|
if(entangled_thread_counter != 1){
|
|
av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
|
|
goto end;
|
|
}
|
|
|
|
if(avctx->codec)
|
|
goto end;
|
|
|
|
avctx->codec = codec;
|
|
avctx->codec_id = codec->id;
|
|
avctx->frame_number = 0;
|
|
if (codec->priv_data_size > 0) {
|
|
avctx->priv_data = av_mallocz(codec->priv_data_size);
|
|
if (!avctx->priv_data)
|
|
goto end;
|
|
} else {
|
|
avctx->priv_data = NULL;
|
|
}
|
|
|
|
if(avctx->coded_width && avctx->coded_height)
|
|
avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
|
|
else if(avctx->width && avctx->height)
|
|
avcodec_set_dimensions(avctx, avctx->width, avctx->height);
|
|
|
|
if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)){
|
|
av_freep(&avctx->priv_data);
|
|
goto end;
|
|
}
|
|
|
|
ret = avctx->codec->init(avctx);
|
|
if (ret < 0) {
|
|
av_freep(&avctx->priv_data);
|
|
goto end;
|
|
}
|
|
ret=0;
|
|
end:
|
|
entangled_thread_counter--;
|
|
return ret;
|
|
}
|
|
|
|
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
|
const short *samples)
|
|
{
|
|
if(buf_size < FF_MIN_BUFFER_SIZE && 0){
|
|
av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
|
|
return -1;
|
|
}
|
|
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
|
|
int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
|
|
avctx->frame_number++;
|
|
return ret;
|
|
}else
|
|
return 0;
|
|
}
|
|
|
|
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
|
const AVFrame *pict)
|
|
{
|
|
if(buf_size < FF_MIN_BUFFER_SIZE){
|
|
av_log(avctx, AV_LOG_ERROR, "buffer smaller then minimum size\n");
|
|
return -1;
|
|
}
|
|
if(avcodec_check_dimensions(avctx,avctx->width,avctx->height))
|
|
return -1;
|
|
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
|
|
int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
|
|
avctx->frame_number++;
|
|
emms_c(); //needed to avoid an emms_c() call before every return;
|
|
|
|
return ret;
|
|
}else
|
|
return 0;
|
|
}
|
|
|
|
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
|
|
const AVSubtitle *sub)
|
|
{
|
|
int ret;
|
|
ret = avctx->codec->encode(avctx, buf, buf_size, (void *)sub);
|
|
avctx->frame_number++;
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
|
|
int *got_picture_ptr,
|
|
uint8_t *buf, int buf_size)
|
|
{
|
|
int ret;
|
|
|
|
*got_picture_ptr= 0;
|
|
if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height))
|
|
return -1;
|
|
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
|
|
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
|
|
buf, buf_size);
|
|
|
|
emms_c(); //needed to avoid an emms_c() call before every return;
|
|
|
|
if (*got_picture_ptr)
|
|
avctx->frame_number++;
|
|
}else
|
|
ret= 0;
|
|
|
|
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. */
|
|
int avcodec_decode_audio(AVCodecContext *avctx, int16_t *samples,
|
|
int *frame_size_ptr,
|
|
uint8_t *buf, int buf_size)
|
|
{
|
|
int ret;
|
|
|
|
*frame_size_ptr= 0;
|
|
if((avctx->codec->capabilities & CODEC_CAP_DELAY) || buf_size){
|
|
ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
|
|
buf, buf_size);
|
|
avctx->frame_number++;
|
|
}else
|
|
ret= 0;
|
|
return ret;
|
|
}
|
|
|
|
/* decode a subtitle message. return -1 if error, otherwise return the
|
|
*number of bytes used. If no subtitle could be decompressed,
|
|
*got_sub_ptr is zero. Otherwise, the subtitle is stored in *sub. */
|
|
int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub,
|
|
int *got_sub_ptr,
|
|
const uint8_t *buf, int buf_size)
|
|
{
|
|
int ret;
|
|
|
|
*got_sub_ptr = 0;
|
|
ret = avctx->codec->decode(avctx, sub, got_sub_ptr,
|
|
(uint8_t *)buf, buf_size);
|
|
if (*got_sub_ptr)
|
|
avctx->frame_number++;
|
|
return ret;
|
|
}
|
|
|
|
int avcodec_close(AVCodecContext *avctx)
|
|
{
|
|
entangled_thread_counter++;
|
|
if(entangled_thread_counter != 1){
|
|
av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
|
|
entangled_thread_counter--;
|
|
return -1;
|
|
}
|
|
|
|
if (avctx->codec->close)
|
|
avctx->codec->close(avctx);
|
|
avcodec_default_free_buffers(avctx);
|
|
av_freep(&avctx->priv_data);
|
|
avctx->codec = NULL;
|
|
entangled_thread_counter--;
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
|
|
{
|
|
const char *codec_name;
|
|
AVCodec *p;
|
|
char buf1[32];
|
|
char channels_str[100];
|
|
int bitrate;
|
|
|
|
if (encode)
|
|
p = avcodec_find_encoder(enc->codec_id);
|
|
else
|
|
p = avcodec_find_decoder(enc->codec_id);
|
|
|
|
if (p) {
|
|
codec_name = p->name;
|
|
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";
|
|
}
|
|
} else if (enc->codec_id == CODEC_ID_MPEG2TS) {
|
|
/* fake mpeg2 transport stream codec (currently not
|
|
registered) */
|
|
codec_name = "mpeg2ts";
|
|
} 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",
|
|
codec_name, enc->mb_decision ? " (hq)" : "");
|
|
if (enc->pix_fmt != PIX_FMT_NONE) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %s",
|
|
avcodec_get_pix_fmt_name(enc->pix_fmt));
|
|
}
|
|
if (enc->width) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %dx%d, %0.2f fps",
|
|
enc->width, enc->height,
|
|
1/av_q2d(enc->time_base));
|
|
}
|
|
if (encode) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", q=%d-%d", enc->qmin, enc->qmax);
|
|
}
|
|
bitrate = enc->bit_rate;
|
|
break;
|
|
case CODEC_TYPE_AUDIO:
|
|
snprintf(buf, buf_size,
|
|
"Audio: %s",
|
|
codec_name);
|
|
switch (enc->channels) {
|
|
case 1:
|
|
strcpy(channels_str, "mono");
|
|
break;
|
|
case 2:
|
|
strcpy(channels_str, "stereo");
|
|
break;
|
|
case 6:
|
|
strcpy(channels_str, "5:1");
|
|
break;
|
|
default:
|
|
snprintf(channels_str, sizeof(channels_str), "%d channels", enc->channels);
|
|
break;
|
|
}
|
|
if (enc->sample_rate) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %d Hz, %s",
|
|
enc->sample_rate,
|
|
channels_str);
|
|
}
|
|
|
|
/* 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:
|
|
bitrate = enc->sample_rate * enc->channels * 16;
|
|
break;
|
|
case CODEC_ID_PCM_S8:
|
|
case CODEC_ID_PCM_U8:
|
|
case CODEC_ID_PCM_ALAW:
|
|
case CODEC_ID_PCM_MULAW:
|
|
bitrate = enc->sample_rate * enc->channels * 8;
|
|
break;
|
|
default:
|
|
bitrate = enc->bit_rate;
|
|
break;
|
|
}
|
|
break;
|
|
case CODEC_TYPE_DATA:
|
|
snprintf(buf, buf_size, "Data: %s", codec_name);
|
|
bitrate = enc->bit_rate;
|
|
break;
|
|
case CODEC_TYPE_SUBTITLE:
|
|
snprintf(buf, buf_size, "Subtitle: %s", codec_name);
|
|
bitrate = enc->bit_rate;
|
|
break;
|
|
default:
|
|
snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
|
|
return;
|
|
}
|
|
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");
|
|
}
|
|
if (bitrate != 0) {
|
|
snprintf(buf + strlen(buf), buf_size - strlen(buf),
|
|
", %d kb/s", bitrate / 1000);
|
|
}
|
|
}
|
|
|
|
unsigned avcodec_version( void )
|
|
{
|
|
return LIBAVCODEC_VERSION_INT;
|
|
}
|
|
|
|
unsigned avcodec_build( void )
|
|
{
|
|
return LIBAVCODEC_BUILD;
|
|
}
|
|
|
|
/* must be called before any other functions */
|
|
void avcodec_init(void)
|
|
{
|
|
static int inited = 0;
|
|
|
|
if (inited != 0)
|
|
return;
|
|
inited = 1;
|
|
|
|
dsputil_static_init();
|
|
}
|
|
|
|
/**
|
|
* Flush buffers, should be called when seeking or when swicthing to a different stream.
|
|
*/
|
|
void avcodec_flush_buffers(AVCodecContext *avctx)
|
|
{
|
|
if(avctx->codec->flush)
|
|
avctx->codec->flush(avctx);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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 '?';
|
|
}
|
|
}
|
|
|
|
/* av_log API */
|
|
|
|
static int av_log_level = AV_LOG_INFO;
|
|
|
|
static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
|
|
{
|
|
static int print_prefix=1;
|
|
AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
|
|
if(level>av_log_level)
|
|
return;
|
|
#undef fprintf
|
|
if(print_prefix && avc) {
|
|
fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
|
|
}
|
|
#define fprintf please_use_av_log
|
|
|
|
print_prefix= strstr(fmt, "\n") != NULL;
|
|
|
|
vfprintf(stderr, fmt, vl);
|
|
}
|
|
|
|
static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
|
|
|
|
void av_log(void* avcl, int level, const char *fmt, ...)
|
|
{
|
|
va_list vl;
|
|
va_start(vl, fmt);
|
|
av_vlog(avcl, level, fmt, vl);
|
|
va_end(vl);
|
|
}
|
|
|
|
void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
|
|
{
|
|
av_log_callback(avcl, 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)(void*, int, const char*, va_list))
|
|
{
|
|
av_log_callback = callback;
|
|
}
|
|
|
|
#if !defined(HAVE_THREADS)
|
|
int avcodec_thread_init(AVCodecContext *s, int thread_count){
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
|
|
{
|
|
unsigned int n = 0;
|
|
|
|
while(v >= 0xff) {
|
|
*s++ = 0xff;
|
|
v -= 0xff;
|
|
n++;
|
|
}
|
|
*s = v;
|
|
n++;
|
|
return n;
|
|
}
|