227 lines
7 KiB
C
227 lines
7 KiB
C
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/* aviffmt.h
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*
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* This header file describes the AVI File Format.
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*
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* Initial version: David Maymudes 1/7/91, based heavily on EricLe's avi0.h
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* Last updated: David Maymudes 12/5/91.
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*
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* Prerequisites: <windows.h>, <mmsystem.h>
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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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* hdra(<AVIFileHdr>)
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* dibh(<BITMAPINFO>)
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* [ wavf(<WAVEFORMAT>) ]
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* [ vidc(<COMPRESSIONINFO>) ]
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* [ audc(<COMPRESSIONINFO>) ]
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* [ JUNK(<padding>) ]
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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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* SubChunk = { dibh(<AVI DIB header>)
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* | dibb(<AVI DIB bits>)
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* | dibc(<AVI compressed DIB bits>)
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* | palc(<AVI Palette Change>)
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* | wavb(<AVI WAVE bytes>)
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* | wavs(<AVI Silence record>)
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* | midi(<MIDI data>)
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* | additonal custom chunks }
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*
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* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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* We need a better description of the AVI file header here.
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* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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*
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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 only necessary for interleaved files.
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*
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* For loading efficiency, the beginning of each LIST 'rec' chunk may
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* be aligned on a 2K boundary. (Actually, the beginning of the LIST
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* chunk should be 12 bytes before a 2K boundary, so that the data chunks
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* inside the LIST chunk are aligned.)
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*
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* If the AVI file is being played from CD-ROM in, it is recommended that
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* the file be padded.
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*
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*
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* Limitations for the Alpha release:
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* If the AVI file has audio, each record LIST must contain exactly
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* one audio chunk, which must be the first chunk.
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* Each record must contain exactly one video chunk (possibly preceded
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* by one or more palette change chunks).
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* No wave format or DIB header chunks may occur outside of the header.
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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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/* 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 listtypeAVIRECORD mmioFOURCC('r', 'e', 'c', ' ')
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#define listtypeAVIMOVIE mmioFOURCC('m', 'o', 'v', 'i')
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#define ckidAVIHDR mmioFOURCC('h', 'd', 'r', 'a')
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#define ckidAVIINDEX mmioFOURCC('i', 'n', 'd', 'x')
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#define ckidAVINEWINDEX mmioFOURCC('i', 'd', 'x', '1')
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#define ckidAVIAuthorInfo mmioFOURCC('a', 'v', 'i', 'a')
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#define ckidAVIVideoCompInfo mmioFOURCC('v', 'i', 'd', 'c')
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#define ckidAVIAudioCompInfo mmioFOURCC('a', 'u', 'd', 'c')
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#define ckidAVIAdditionalInfo mmioFOURCC('i', 'n', 'f', 'o')
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#define ckidDIBheader mmioFOURCC('d', 'i', 'b', 'h')
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#define ckidPALchange mmioFOURCC('p', 'a', 'l', 'c')
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#define ckidDIBbits mmioFOURCC('d', 'i', 'b', 'b')
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#define ckidDIBcompressed mmioFOURCC('d', 'i', 'b', 'c')
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#define ckidDIBhalfframe mmioFOURCC('d', 'i', 'b', 'x')
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#define ckidCCCbits mmioFOURCC('C', 'C', 'C', 'b')
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#define BI_CCC 0x20434343
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#define ckidWAVEformat mmioFOURCC('w', 'a', 'v', 'f')
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#define ckidWAVEbytes mmioFOURCC('w', 'a', 'v', 'b')
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#define ckidWAVEsilence mmioFOURCC('w', 'a', 'v', 's')
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#define ckidMIDIdata mmioFOURCC('m', 'i', 'd', 'i')
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#define ckidAVIPADDING mmioFOURCC('J', 'U', 'N', 'K')
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#define ckidOLDPADDING mmioFOURCC('p', 'a', 'd', 'd')
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// #define comptypeCCC mmioFOURCC('C','C','C',' ')
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#define comptypeRLE0 mmioFOURCC('R','L','E','0')
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#define comptypeRLE mmioFOURCC('R','L','E',' ')
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#define comptypeDIB mmioFOURCC('D','I','B',' ')
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#define comptypeNONE mmioFOURCC('N','O','N','E')
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#define comptypePCM mmioFOURCC('P','C','M',' ')
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#define OLDRLEF_MERGECOLORS 0x0010
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#define OLDRLEF_SKIPSINGLE 0x0020
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#define OLDRLEF_ADAPTIVE 0x0040
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/* flags for use in <dwFlags> in AVIFileHdr */
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#define AVIF_HASWAVE 0x00000001
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#define AVIF_HASMIDI 0x00000002
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#define AVIF_HASINDEX 0x00000010 // Index at end of file?
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#define AVIF_ISINTERLEAVED 0x00000100
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#define AVIF_VARIABLESIZEREC 0x00000200
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#define AVIF_NOPADDING 0x00000400
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#define AVIF_ONEPALETTE 0x00001000 // No palette changes?
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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 _AVIFileHdr
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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 dwInitialVideoFrames;
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DWORD dwNumAudioChunks;
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DWORD dwAudioOffsetFrames; // how many frames is audio
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// ahead of video in file?
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} AVIFileHdr;
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typedef struct _AVIWAVEheader
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{
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PCMWAVEFORMAT waveformat; // or some other format
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} AVIWAVEheader;
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#ifndef WIN32
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/*
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* this section not used and causes warnings on NT (zero-length arrays
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* are disallowed).
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*/
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// Note: no time information here: wave audio always starts at time 0,
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// and continues without stopping.
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typedef struct _AVIWAVEbytes
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{
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BYTE abBits[0]; // bits of audio
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} AVIWAVEbytes;
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typedef struct _AVIWAVEsilence
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{
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DWORD dwSamples; // # samples with no sound
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} AVIWAVEsilence;
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/* Possibly, we shouldn't have a whole BITMAPINFOHEADER here. */
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typedef struct _AVIDIBheader
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{
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BITMAPINFOHEADER bih; // DIB header to use
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RGBQUAD argbq[0]; // optional colors
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} AVIDIBheader;
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typedef struct _AVIDIBbits
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{
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BYTE abBits[0]; // bits of video
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} AVIDIBbits;
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typedef struct _AVIPALchange
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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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typedef struct _MIDIdata
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{
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BYTE abData[0]; // Raw MIDI data
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} MIDIdata;
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#endif //WIN32
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#define AVIIF_LIST 0x00000001L
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#define AVIIF_KEYFRAME 0x00000010L
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typedef struct _AVIIndexEntry
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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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#ifndef WIN32
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typedef struct tagCOMPRESSIONINFO
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{
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DWORD fccCompType; /* Which compressor to use */
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BYTE abData[]; /* Compressor-dependent data */
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} COMPRESSIONINFO;
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/* OBSOLETE BELOW THIS LINE */
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/* flags for use in <dwAuthorFlags> in AVIAuthorInfo */
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#define AVIF_PADTOMAX 0x0001 // pad records to maximum size
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#define AVIF_IDENTITY 0x0002 // translate to identity palette
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#define AVIF_MERGECOLORS 0x0010 // use <wInterFrameThreshold>
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#define AVIF_SKIPSINGLE 0x0020
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#define AVIF_FILTERFRAMES 0x0100 // use <wIntraFrameThreshold>
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typedef struct _AVIAuthorInfo
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{
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DWORD dwAuthorFlags; // flags provided at author time
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WORD wInterFrameThreshold;
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WORD wIntraFrameThreshold;
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} AVIAuthorInfo;
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#endif //WIN32
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