libavutil/avutil.h

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/*
 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVUTIL_AVUTIL_H
#define AVUTIL_AVUTIL_H

/*
 * @mainpage
 *
 * @section ffmpeg_intro Introduction
 *
 * This document describes the usage of the different libraries
 * provided by FFmpeg.
 *
 * @li @ref libavc "libavcodec" encoding/decoding library
 * @li @subpage libavfilter graph based frame editing library
 * @li @ref libavf "libavformat" I/O and muxing/demuxing library
 * @li @ref lavd "libavdevice" special devices muxing/demuxing library
 * @li @ref lavu "libavutil" common utility library
 * @li @subpage libpostproc post processing library
 * @li @subpage libswscale  color conversion and scaling library
 */

#define AV_STRINGIFY(s)         AV_TOSTRING(s)
#define AV_TOSTRING(s) #s

#define AV_GLUE(a, b) a ## b
#define AV_JOIN(a, b) AV_GLUE(a, b)

#define AV_PRAGMA(s) _Pragma(#s)

#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)

unsigned avutil_version(void);

const char *avutil_configuration(void);

const char *avutil_license(void);

enum AVMediaType {
    AVMEDIA_TYPE_UNKNOWN = -1,  
    AVMEDIA_TYPE_VIDEO,
    AVMEDIA_TYPE_AUDIO,
    AVMEDIA_TYPE_DATA,          
    AVMEDIA_TYPE_SUBTITLE,
    AVMEDIA_TYPE_ATTACHMENT,    
    AVMEDIA_TYPE_NB
};

const char *av_get_media_type_string(enum AVMediaType media_type);

#define FF_LAMBDA_SHIFT 7
#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
#define FF_QP2LAMBDA 118 
#define FF_LAMBDA_MAX (256*128-1)

#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove

#define AV_NOPTS_VALUE          ((int64_t)UINT64_C(0x8000000000000000))

#define AV_TIME_BASE            1000000

#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}

enum AVPictureType {
    AV_PICTURE_TYPE_NONE = 0, 
    AV_PICTURE_TYPE_I,     
    AV_PICTURE_TYPE_P,     
    AV_PICTURE_TYPE_B,     
    AV_PICTURE_TYPE_S,     
    AV_PICTURE_TYPE_SI,    
    AV_PICTURE_TYPE_SP,    
    AV_PICTURE_TYPE_BI,    
};

char av_get_picture_type_char(enum AVPictureType pict_type);

#include "common.h"
#include "error.h"
#include "version.h"
#include "mathematics.h"
#include "rational.h"
#include "intfloat_readwrite.h"
#include "log.h"
#include "pixfmt.h"

static inline void *av_x_if_null(const void *p, const void *x)
{
    return (void *)(intptr_t)(p ? p : x);
}

#endif /* AVUTIL_AVUTIL_H */

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