252 lines
8.2 KiB
C
252 lines
8.2 KiB
C
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/****************************************************************************/
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/* */
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/* AVIFMT.H - Include file for working with AVI files */
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/* */
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/* Note: You must include WINDOWS.H and MMSYSTEM.H before */
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/* including this file. */
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/* */
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/* Copyright (c) 1991-1998, Microsoft Corp. All rights reserved. */
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/* */
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/* */
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/****************************************************************************/
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#ifndef _INC_AVIFMT
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#define _INC_AVIFMT 100 /* version number * 100 + revision */
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#ifdef __cplusplus
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extern "C" { /* Assume C declarations for C++ */
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#endif /* __cplusplus */
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// begin_vfw32
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#ifdef _MSC_VER
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#pragma warning(disable:4200)
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#endif
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/* The following is a short description of the AVI file format. Please
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* see the accompanying documentation for a full explanation.
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*
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* An AVI file is the following RIFF form:
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*
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* RIFF('AVI'
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* LIST('hdrl'
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* avih(<MainAVIHeader>)
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* LIST ('strl'
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* strh(<Stream header>)
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* strf(<Stream format>)
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* ... additional header data
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* LIST('movi'
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* { LIST('rec'
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* SubChunk...
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* )
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* | SubChunk } ....
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* )
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* [ <AVIIndex> ]
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* )
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*
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* The main file header specifies how many streams are present. For
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* each one, there must be a stream header chunk and a stream format
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* chunk, enlosed in a 'strl' LIST chunk. The 'strf' chunk contains
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* type-specific format information; for a video stream, this should
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* be a BITMAPINFO structure, including palette. For an audio stream,
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* this should be a WAVEFORMAT (or PCMWAVEFORMAT) structure.
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*
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* The actual data is contained in subchunks within the 'movi' LIST
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* chunk. The first two characters of each data chunk are the
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* stream number with which that data is associated.
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*
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* Some defined chunk types:
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* Video Streams:
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* ##db: RGB DIB bits
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* ##dc: RLE8 compressed DIB bits
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* ##pc: Palette Change
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*
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* Audio Streams:
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* ##wb: waveform audio bytes
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*
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* The grouping into LIST 'rec' chunks implies only that the contents of
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* the chunk should be read into memory at the same time. This
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* grouping is used for files specifically intended to be played from
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* CD-ROM.
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*
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* The index chunk at the end of the file should contain one entry for
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* each data chunk in the file.
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*
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* Limitations for the current software:
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* Only one video stream and one audio stream are allowed.
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* The streams must start at the beginning of the file.
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*
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*
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* To register codec types please obtain a copy of the Multimedia
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* Developer Registration Kit from:
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*
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* Microsoft Corporation
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* Multimedia Systems Group
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* Product Marketing
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* One Microsoft Way
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* Redmond, WA 98052-6399
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*
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*/
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#ifndef mmioFOURCC
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#define mmioFOURCC( ch0, ch1, ch2, ch3 ) \
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( (DWORD)(BYTE)(ch0) | ( (DWORD)(BYTE)(ch1) << 8 ) | \
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( (DWORD)(BYTE)(ch2) << 16 ) | ( (DWORD)(BYTE)(ch3) << 24 ) )
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#endif
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/* Macro to make a TWOCC out of two characters */
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#ifndef aviTWOCC
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#define aviTWOCC(ch0, ch1) ((WORD)(BYTE)(ch0) | ((WORD)(BYTE)(ch1) << 8))
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#endif
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typedef WORD TWOCC;
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/* form types, list types, and chunk types */
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#define formtypeAVI mmioFOURCC('A', 'V', 'I', ' ')
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#define listtypeAVIHEADER mmioFOURCC('h', 'd', 'r', 'l')
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#define ckidAVIMAINHDR mmioFOURCC('a', 'v', 'i', 'h')
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#define listtypeSTREAMHEADER mmioFOURCC('s', 't', 'r', 'l')
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#define ckidSTREAMHEADER mmioFOURCC('s', 't', 'r', 'h')
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#define ckidSTREAMFORMAT mmioFOURCC('s', 't', 'r', 'f')
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#define ckidSTREAMHANDLERDATA mmioFOURCC('s', 't', 'r', 'd')
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#define ckidSTREAMNAME mmioFOURCC('s', 't', 'r', 'n')
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#define listtypeAVIMOVIE mmioFOURCC('m', 'o', 'v', 'i')
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#define listtypeAVIRECORD mmioFOURCC('r', 'e', 'c', ' ')
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#define ckidAVINEWINDEX mmioFOURCC('i', 'd', 'x', '1')
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/*
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** Stream types for the <fccType> field of the stream header.
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*/
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#define streamtypeVIDEO mmioFOURCC('v', 'i', 'd', 's')
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#define streamtypeAUDIO mmioFOURCC('a', 'u', 'd', 's')
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#define streamtypeMIDI mmioFOURCC('m', 'i', 'd', 's')
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#define streamtypeTEXT mmioFOURCC('t', 'x', 't', 's')
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/* Basic chunk types */
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#define cktypeDIBbits aviTWOCC('d', 'b')
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#define cktypeDIBcompressed aviTWOCC('d', 'c')
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#define cktypePALchange aviTWOCC('p', 'c')
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#define cktypeWAVEbytes aviTWOCC('w', 'b')
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/* Chunk id to use for extra chunks for padding. */
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#define ckidAVIPADDING mmioFOURCC('J', 'U', 'N', 'K')
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/*
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** Useful macros
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**
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** Warning: These are nasty macro, and MS C 6.0 compiles some of them
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** incorrectly if optimizations are on. Ack.
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*/
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/* Macro to get stream number out of a FOURCC ckid */
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#define FromHex(n) (((n) >= 'A') ? ((n) + 10 - 'A') : ((n) - '0'))
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#define StreamFromFOURCC(fcc) ((WORD) ((FromHex(LOBYTE(LOWORD(fcc))) << 4) + \
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(FromHex(HIBYTE(LOWORD(fcc))))))
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/* Macro to get TWOCC chunk type out of a FOURCC ckid */
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#define TWOCCFromFOURCC(fcc) HIWORD(fcc)
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/* Macro to make a ckid for a chunk out of a TWOCC and a stream number
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** from 0-255.
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*/
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#define ToHex(n) ((BYTE) (((n) > 9) ? ((n) - 10 + 'A') : ((n) + '0')))
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#define MAKEAVICKID(tcc, stream) \
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MAKELONG((ToHex((stream) & 0x0f) << 8) | \
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(ToHex(((stream) & 0xf0) >> 4)), tcc)
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/*
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** Main AVI File Header
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*/
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/* flags for use in <dwFlags> in AVIFileHdr */
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#define AVIF_HASINDEX 0x00000010 // Index at end of file
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#define AVIF_MUSTUSEINDEX 0x00000020
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#define AVIF_ISINTERLEAVED 0x00000100
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#define AVIF_TRUSTCKTYPE 0x00000800 // Use CKType to find key frames
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#define AVIF_WASCAPTUREFILE 0x00010000
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#define AVIF_COPYRIGHTED 0x00020000
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/* The AVI File Header LIST chunk should be padded to this size */
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#define AVI_HEADERSIZE 2048 // size of AVI header list
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typedef struct
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{
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DWORD dwMicroSecPerFrame; // frame display rate (or 0L)
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DWORD dwMaxBytesPerSec; // max. transfer rate
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DWORD dwPaddingGranularity; // pad to multiples of this
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// size; normally 2K.
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DWORD dwFlags; // the ever-present flags
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DWORD dwTotalFrames; // # frames in file
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DWORD dwInitialFrames;
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DWORD dwStreams;
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DWORD dwSuggestedBufferSize;
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DWORD dwWidth;
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DWORD dwHeight;
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DWORD dwReserved[4];
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} MainAVIHeader;
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/*
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** Stream header
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*/
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#define AVISF_DISABLED 0x00000001
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#define AVISF_VIDEO_PALCHANGES 0x00010000
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typedef struct {
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FOURCC fccType;
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FOURCC fccHandler;
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DWORD dwFlags; /* Contains AVITF_* flags */
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WORD wPriority;
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WORD wLanguage;
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DWORD dwInitialFrames;
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DWORD dwScale;
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DWORD dwRate; /* dwRate / dwScale == samples/second */
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DWORD dwStart;
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DWORD dwLength; /* In units above... */
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DWORD dwSuggestedBufferSize;
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DWORD dwQuality;
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DWORD dwSampleSize;
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RECT rcFrame;
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} AVIStreamHeader;
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/* Flags for index */
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#define AVIIF_LIST 0x00000001L // chunk is a 'LIST'
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#define AVIIF_KEYFRAME 0x00000010L // this frame is a key frame.
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#define AVIIF_NOTIME 0x00000100L // this frame doesn't take any time
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#define AVIIF_COMPUSE 0x0FFF0000L // these bits are for compressor use
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typedef struct
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{
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DWORD ckid;
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DWORD dwFlags;
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DWORD dwChunkOffset; // Position of chunk
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DWORD dwChunkLength; // Length of chunk
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} AVIINDEXENTRY;
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/*
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** Palette change chunk
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**
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** Used in video streams.
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*/
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typedef struct
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{
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BYTE bFirstEntry; /* first entry to change */
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BYTE bNumEntries; /* # entries to change (0 if 256) */
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WORD wFlags; /* Mostly to preserve alignment... */
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PALETTEENTRY peNew[]; /* New color specifications */
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} AVIPALCHANGE;
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// end_vfw32
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#ifdef __cplusplus
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} /* End of extern "C" { */
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#endif /* __cplusplus */
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#endif /* _INC_AVIFMT */
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