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