misc/winutils/include/libavutil/avutil.h
author koda
Tue, 02 Jun 2015 19:51:04 +0100
branch0.9.21
changeset 10765 7e55468ffe38
parent 7813 7ac83d79b897
permissions -rw-r--r--
Fix building hedgewars-server
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/*
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 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of Libav.
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 *
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 * Libav 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 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav 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 Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#ifndef AVUTIL_AVUTIL_H
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#define AVUTIL_AVUTIL_H
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/**
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 * @file
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 * external API header
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 */
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/**
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 * @mainpage
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 *
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 * @section libav_intro Introduction
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 *
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 * This document describes the usage of the different libraries
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 * provided by Libav.
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 *
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 * @li @ref libavc "libavcodec" encoding/decoding library
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 * @li @subpage libavfilter graph based frame editing library
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 * @li @ref libavf "libavformat" I/O and muxing/demuxing library
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 * @li @ref lavd "libavdevice" special devices muxing/demuxing library
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 * @li @ref lavu "libavutil" common utility library
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 * @li @subpage libswscale  color conversion and scaling library
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 */
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/**
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 * @defgroup lavu Common utility functions
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 *
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 * @brief
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 * libavutil contains the code shared across all the other Libav
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 * libraries
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 *
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 * @note In order to use the functions provided by avutil you must include
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 * the specific header.
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 *
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 * @{
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 *
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 * @defgroup lavu_crypto Crypto and Hashing
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 *
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 * @{
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 * @}
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 *
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 * @defgroup lavu_math Maths
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 * @{
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 *
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 * @}
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 *
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 * @defgroup lavu_string String Manipulation
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 *
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 * @{
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 *
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 * @}
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 *
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 * @defgroup lavu_mem Memory Management
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 *
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 * @{
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 *
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 * @}
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 *
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 * @defgroup lavu_data Data Structures
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 * @{
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 *
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 * @}
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 *
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 * @defgroup lavu_audio Audio related
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 *
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 * @{
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 *
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 * @}
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 *
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 * @defgroup lavu_error Error Codes
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 *
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 * @{
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 *
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 * @}
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 *
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 * @defgroup lavu_misc Other
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 *
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 * @{
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 *
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 * @defgroup lavu_internal Internal
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 *
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 * Not exported functions, for internal usage only
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 *
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 * @{
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 *
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 * @}
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 */
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/**
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 * @defgroup preproc_misc Preprocessor String Macros
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 *
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 * String manipulation macros
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 *
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 * @{
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 */
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#define AV_STRINGIFY(s)         AV_TOSTRING(s)
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#define AV_TOSTRING(s) #s
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#define AV_GLUE(a, b) a ## b
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#define AV_JOIN(a, b) AV_GLUE(a, b)
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#define AV_PRAGMA(s) _Pragma(#s)
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/**
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 * @}
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 */
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/**
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 * @defgroup version_utils Library Version Macros
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 *
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 * Useful to check and match library version in order to maintain
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 * backward compatibility.
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 *
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 * @{
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 */
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#define AV_VERSION_INT(a, b, c) (a<<16 | b<<8 | c)
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#define AV_VERSION_DOT(a, b, c) a ##.## b ##.## c
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#define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
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/**
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 * @}
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 */
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/**
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 * @addtogroup lavu_ver
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 * @{
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 */
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/**
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 * Return the LIBAVUTIL_VERSION_INT constant.
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 */
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unsigned avutil_version(void);
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/**
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 * Return the libavutil build-time configuration.
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 */
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const char *avutil_configuration(void);
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/**
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 * Return the libavutil license.
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 */
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const char *avutil_license(void);
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/**
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 * @}
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 */
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/**
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 * @addtogroup lavu_media Media Type
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 * @brief Media Type
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 */
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enum AVMediaType {
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    AVMEDIA_TYPE_UNKNOWN = -1,  ///< Usually treated as AVMEDIA_TYPE_DATA
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    AVMEDIA_TYPE_VIDEO,
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    AVMEDIA_TYPE_AUDIO,
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    AVMEDIA_TYPE_DATA,          ///< Opaque data information usually continuous
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    AVMEDIA_TYPE_SUBTITLE,
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    AVMEDIA_TYPE_ATTACHMENT,    ///< Opaque data information usually sparse
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    AVMEDIA_TYPE_NB
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};
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/**
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 * @defgroup lavu_const Constants
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 * @{
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 *
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 * @defgroup lavu_enc Encoding specific
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 *
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 * @note those definition should move to avcodec
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 * @{
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 */
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#define FF_LAMBDA_SHIFT 7
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#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
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#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
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#define FF_LAMBDA_MAX (256*128-1)
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#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
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/**
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 * @}
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 * @defgroup lavu_time Timestamp specific
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 *
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 * Libav internal timebase and timestamp definitions
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 *
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 * @{
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 */
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/**
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 * @brief Undefined timestamp value
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 *
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 * Usually reported by demuxer that work on containers that do not provide
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 * either pts or dts.
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 */
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#define AV_NOPTS_VALUE          INT64_C(0x8000000000000000)
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/**
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 * Internal time base represented as integer
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 */
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#define AV_TIME_BASE            1000000
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/**
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 * Internal time base represented as fractional value
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 */
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#define AV_TIME_BASE_Q          (AVRational){1, AV_TIME_BASE}
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/**
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 * @}
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 * @}
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 * @defgroup lavu_picture Image related
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 *
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 * AVPicture types, pixel formats and basic image planes manipulation.
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 *
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 * @{
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 */
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enum AVPictureType {
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    AV_PICTURE_TYPE_I = 1, ///< Intra
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    AV_PICTURE_TYPE_P,     ///< Predicted
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    AV_PICTURE_TYPE_B,     ///< Bi-dir predicted
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    AV_PICTURE_TYPE_S,     ///< S(GMC)-VOP MPEG4
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    AV_PICTURE_TYPE_SI,    ///< Switching Intra
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    AV_PICTURE_TYPE_SP,    ///< Switching Predicted
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    AV_PICTURE_TYPE_BI,    ///< BI type
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};
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/**
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 * Return a single letter to describe the given picture type
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 * pict_type.
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 *
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 * @param[in] pict_type the picture type @return a single character
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 * representing the picture type, '?' if pict_type is unknown
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 */
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char av_get_picture_type_char(enum AVPictureType pict_type);
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/**
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 * @}
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 */
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#include "error.h"
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#include "version.h"
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/**
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 * @}
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 * @}
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 */
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#endif /* AVUTIL_AVUTIL_H */