+++ /dev/null
-/*
- * 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
-
-/**
- * @file
- * external API header
- */
-
-/**
- * @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 @ref lavfi "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 @ref lswr "libswresample" audio resampling, format conversion and mixing
- * @li @ref lpp "libpostproc" post processing library
- * @li @ref libsws "libswscale" color conversion and scaling library
- *
- * @section ffmpeg_versioning Versioning and compatibility
- *
- * Each of the FFmpeg libraries contains a version.h header, which defines a
- * major, minor and micro version number with the
- * <em>LIBRARYNAME_VERSION_{MAJOR,MINOR,MICRO}</em> macros. The major version
- * number is incremented with backward incompatible changes - e.g. removing
- * parts of the public API, reordering public struct members, etc. The minor
- * version number is incremented for backward compatible API changes or major
- * new features - e.g. adding a new public function or a new decoder. The micro
- * version number is incremented for smaller changes that a calling program
- * might still want to check for - e.g. changing behavior in a previously
- * unspecified situation.
- *
- * FFmpeg guarantees backward API and ABI compatibility for each library as long
- * as its major version number is unchanged. This means that no public symbols
- * will be removed or renamed. Types and names of the public struct members and
- * values of public macros and enums will remain the same (unless they were
- * explicitly declared as not part of the public API). Documented behavior will
- * not change.
- *
- * In other words, any correct program that works with a given FFmpeg snapshot
- * should work just as well without any changes with any later snapshot with the
- * same major versions. This applies to both rebuilding the program against new
- * FFmpeg versions or to replacing the dynamic FFmpeg libraries that a program
- * links against.
- *
- * However, new public symbols may be added and new members may be appended to
- * public structs whose size is not part of public ABI (most public structs in
- * FFmpeg). New macros and enum values may be added. Behavior in undocumented
- * situations may change slightly (and be documented). All those are accompanied
- * by an entry in doc/APIchanges and incrementing either the minor or micro
- * version number.
- */
-
-/**
- * @defgroup lavu Common utility functions
- *
- * @brief
- * libavutil contains the code shared across all the other FFmpeg
- * libraries
- *
- * @note In order to use the functions provided by avutil you must include
- * the specific header.
- *
- * @{
- *
- * @defgroup lavu_crypto Crypto and Hashing
- *
- * @{
- * @}
- *
- * @defgroup lavu_math Maths
- * @{
- *
- * @}
- *
- * @defgroup lavu_string String Manipulation
- *
- * @{
- *
- * @}
- *
- * @defgroup lavu_mem Memory Management
- *
- * @{
- *
- * @}
- *
- * @defgroup lavu_data Data Structures
- * @{
- *
- * @}
- *
- * @defgroup lavu_audio Audio related
- *
- * @{
- *
- * @}
- *
- * @defgroup lavu_error Error Codes
- *
- * @{
- *
- * @}
- *
- * @defgroup lavu_log Logging Facility
- *
- * @{
- *
- * @}
- *
- * @defgroup lavu_misc Other
- *
- * @{
- *
- * @defgroup preproc_misc Preprocessor String Macros
- *
- * @{
- *
- * @}
- *
- * @defgroup version_utils Library Version Macros
- *
- * @{
- *
- * @}
- */
-
-
-/**
- * @addtogroup lavu_ver
- * @{
- */
-
-/**
- * Return the LIBAVUTIL_VERSION_INT constant.
- */
-unsigned avutil_version(void);
-
-/**
- * Return an informative version string. This usually is the actual release
- * version number or a git commit description. This string has no fixed format
- * and can change any time. It should never be parsed by code.
- */
-const char *av_version_info(void);
-
-/**
- * Return the libavutil build-time configuration.
- */
-const char *avutil_configuration(void);
-
-/**
- * Return the libavutil license.
- */
-const char *avutil_license(void);
-
-/**
- * @}
- */
-
-/**
- * @addtogroup lavu_media Media Type
- * @brief Media Type
- */
-
-enum AVMediaType {
- AVMEDIA_TYPE_UNKNOWN = -1, ///< Usually treated as AVMEDIA_TYPE_DATA
- AVMEDIA_TYPE_VIDEO,
- AVMEDIA_TYPE_AUDIO,
- AVMEDIA_TYPE_DATA, ///< Opaque data information usually continuous
- AVMEDIA_TYPE_SUBTITLE,
- AVMEDIA_TYPE_ATTACHMENT, ///< Opaque data information usually sparse
- AVMEDIA_TYPE_NB
-};
-
-/**
- * Return a string describing the media_type enum, NULL if media_type
- * is unknown.
- */
-const char *av_get_media_type_string(enum AVMediaType media_type);
-
-/**
- * @defgroup lavu_const Constants
- * @{
- *
- * @defgroup lavu_enc Encoding specific
- *
- * @note those definition should move to avcodec
- * @{
- */
-
-#define FF_LAMBDA_SHIFT 7
-#define FF_LAMBDA_SCALE (1<<FF_LAMBDA_SHIFT)
-#define FF_QP2LAMBDA 118 ///< factor to convert from H.263 QP to lambda
-#define FF_LAMBDA_MAX (256*128-1)
-
-#define FF_QUALITY_SCALE FF_LAMBDA_SCALE //FIXME maybe remove
-
-/**
- * @}
- * @defgroup lavu_time Timestamp specific
- *
- * FFmpeg internal timebase and timestamp definitions
- *
- * @{
- */
-
-/**
- * @brief Undefined timestamp value
- *
- * Usually reported by demuxer that work on containers that do not provide
- * either pts or dts.
- */
-
-#define AV_NOPTS_VALUE ((int64_t)UINT64_C(0x8000000000000000))
-
-/**
- * Internal time base represented as integer
- */
-
-#define AV_TIME_BASE 1000000
-
-/**
- * Internal time base represented as fractional value
- */
-
-#define AV_TIME_BASE_Q (AVRational){1, AV_TIME_BASE}
-
-/**
- * @}
- * @}
- * @defgroup lavu_picture Image related
- *
- * AVPicture types, pixel formats and basic image planes manipulation.
- *
- * @{
- */
-
-enum AVPictureType {
- AV_PICTURE_TYPE_NONE = 0, ///< Undefined
- AV_PICTURE_TYPE_I, ///< Intra
- AV_PICTURE_TYPE_P, ///< Predicted
- AV_PICTURE_TYPE_B, ///< Bi-dir predicted
- AV_PICTURE_TYPE_S, ///< S(GMC)-VOP MPEG4
- AV_PICTURE_TYPE_SI, ///< Switching Intra
- AV_PICTURE_TYPE_SP, ///< Switching Predicted
- AV_PICTURE_TYPE_BI, ///< BI type
-};
-
-/**
- * Return a single letter to describe the given picture type
- * pict_type.
- *
- * @param[in] pict_type the picture type @return a single character
- * representing the picture type, '?' if pict_type is unknown
- */
-char av_get_picture_type_char(enum AVPictureType pict_type);
-
-/**
- * @}
- */
-
-#include "common.h"
-#include "error.h"
-#include "rational.h"
-#include "version.h"
-#include "macros.h"
-#include "mathematics.h"
-#include "log.h"
-#include "pixfmt.h"
-
-/**
- * Return x default pointer in case p is NULL.
- */
-static inline void *av_x_if_null(const void *p, const void *x)
-{
- return (void *)(intptr_t)(p ? p : x);
-}
-
-/**
- * Compute the length of an integer list.
- *
- * @param elsize size in bytes of each list element (only 1, 2, 4 or 8)
- * @param term list terminator (usually 0 or -1)
- * @param list pointer to the list
- * @return length of the list, in elements, not counting the terminator
- */
-unsigned av_int_list_length_for_size(unsigned elsize,
- const void *list, uint64_t term) av_pure;
-
-/**
- * Compute the length of an integer list.
- *
- * @param term list terminator (usually 0 or -1)
- * @param list pointer to the list
- * @return length of the list, in elements, not counting the terminator
- */
-#define av_int_list_length(list, term) \
- av_int_list_length_for_size(sizeof(*(list)), list, term)
-
-/**
- * Open a file using a UTF-8 filename.
- * The API of this function matches POSIX fopen(), errors are returned through
- * errno.
- */
-FILE *av_fopen_utf8(const char *path, const char *mode);
-
-/**
- * Return the fractional representation of the internal time base.
- */
-AVRational av_get_time_base_q(void);
-
-/**
- * @}
- * @}
- */
-
-#endif /* AVUTIL_AVUTIL_H */
projects / rtmpclient.git / blobdiff