268 lines
7 KiB
C
Executable file
268 lines
7 KiB
C
Executable file
/*
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THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
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END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
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ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
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SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
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FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
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CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
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AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
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COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
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*/
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#ifndef _MIDIFILE_H
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#define _MIDIFILE_H
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#include "global.h"
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typedef DWORD SMFRESULT;
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typedef DWORD TICKS;
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typedef TICKS FAR *PTICKS;
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typedef BYTE HUGE *HPBYTE;
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#define MAX_TICKS ((TICKS)0xFFFFFFFFL)
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#define SMF_SUCCESS (0L)
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#define SMF_INVALID_FILE (1L)
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#define SMF_NO_MEMORY (2L)
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#define SMF_OPEN_FAILED (3L)
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#define SMF_INVALID_TRACK (4L)
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#define SMF_META_PENDING (5L)
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#define SMF_ALREADY_OPEN (6L)
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#define SMF_END_OF_TRACK (7L)
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#define SMF_NO_META (8L)
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#define SMF_INVALID_PARM (9L)
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#define SMF_INVALID_BUFFER (10L)
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#define SMF_END_OF_FILE (11L)
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#define SMF_REACHED_TKMAX (12L)
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DECLARE_HANDLE(HSMF);
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typedef struct tag_smfopenstruct
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{
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LPSTR pstrName;
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DWORD dwTimeDivision;
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HSMF hSmf;
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} SMFOPENFILESTRUCT,
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FAR *PSMFOPENFILESTRUCT;
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extern SMFRESULT FNLOCAL smfOpenFile(
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BYTE *data, UINT length, HSMF *pph);
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extern SMFRESULT FNLOCAL smfCloseFile(
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HSMF hsmf);
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typedef struct tag_smffileinfo
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{
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DWORD dwTracks;
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DWORD dwFormat;
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DWORD dwTimeDivision;
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TICKS tkLength;
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} SMFFILEINFO,
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FAR *PSMFFILEINFO;
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extern SMFRESULT FNLOCAL smfGetFileInfo(
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HSMF hsmf,
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PSMFFILEINFO psfi);
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extern DWORD FNLOCAL smfTicksToMillisecs(
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HSMF hsmf,
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TICKS tkOffset);
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extern DWORD FNLOCAL smfMillisecsToTicks(
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HSMF hsmf,
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DWORD msOffset);
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extern SMFRESULT FNLOCAL smfReadEvents(
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HSMF hsmf,
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LPMIDIHDR lpmh,
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TICKS tkMax);
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extern SMFRESULT FNLOCAL smfSeek(
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HSMF hsmf,
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TICKS tkPosition,
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LPMIDIHDR lpmh);
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extern DWORD FNLOCAL smfGetStateMaxSize(
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void);
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/* Buffer described by LPMIDIHDR is in polymsg format, except that it
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** can contain meta-events (which will be ignored during playback by
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** the current system). This means we can use the pack functions, etc.
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*/
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#define PMSG_META ((BYTE)0xC0)
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/*****************************************************************************/
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/*****************************************************************************/
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/* Handle structure for HSMF
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*/
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#define SMF_TF_EOT 0x00000001L
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#define SMF_TF_INVALID 0x00000002L
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typedef struct tag_tempomapentry
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{
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TICKS tkTempo;
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DWORD msBase;
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DWORD dwTempo;
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} TEMPOMAPENTRY,
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*PTEMPOMAPENTRY;
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typedef struct tag_smf *PSMF;
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typedef struct tag_track
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{
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PSMF pSmf;
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DWORD idxTrack;
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TICKS tkPosition;
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DWORD cbLeft;
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HPBYTE hpbImage;
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BYTE bRunningStatus;
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DWORD fdwTrack;
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struct
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{
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TICKS tkLength;
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DWORD cbLength;
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}
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smti;
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} TRACK,
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*PTRACK;
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#define SMF_F_EOF 0x00000001L
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#define SMF_F_INSERTSYSEX 0x00000002L
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#define C_TEMPO_MAP_CHK 16
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typedef struct tag_smf
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{
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char szName[128];
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HPBYTE hpbImage;
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DWORD cbImage;
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HTASK htask;
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TICKS tkPosition;
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TICKS tkLength;
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DWORD dwFormat;
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DWORD dwTracks;
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DWORD dwTimeDivision;
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DWORD fdwSMF;
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DWORD cTempoMap;
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DWORD cTempoMapAlloc;
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HLOCAL hTempoMap;
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PTEMPOMAPENTRY pTempoMap;
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DWORD dwPendingUserEvent;
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DWORD cbPendingUserEvent;
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HPBYTE hpbPendingUserEvent;
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TRACK rTracks[];
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} SMF;
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typedef struct tagEVENT
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{
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TICKS tkDelta;
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BYTE abEvent[3];
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DWORD cbParm;
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HPBYTE hpbParm;
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} EVENT,
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BSTACK *SPEVENT;
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#define EVENT_TYPE(event) ((event).abEvent[0])
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#define EVENT_CH_B1(event) ((event).abEvent[1])
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#define EVENT_CH_B2(event) ((event).abEvent[2])
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#define EVENT_META_TYPE(event) ((event).abEvent[1])
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SMFRESULT FNLOCAL smfBuildFileIndex(
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PSMF BSTACK * ppsmf);
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DWORD FNLOCAL smfGetVDword(
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HPBYTE hpbImage,
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DWORD dwLeft,
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DWORD BSTACK * pdw);
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SMFRESULT FNLOCAL smfGetNextEvent(
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PSMF psmf,
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SPEVENT pevent,
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TICKS tkMax);
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/*
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** Useful macros when dealing with hi-lo format integers
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*/
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#define DWORDSWAP(dw) \
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((((dw)>>24)&0x000000FFL)|\
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(((dw)>>8)&0x0000FF00L)|\
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(((dw)<<8)&0x00FF0000L)|\
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(((dw)<<24)&0xFF000000L))
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#define WORDSWAP(w) \
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((((w)>>8)&0x00FF)|\
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(((w)<<8)&0xFF00))
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#define FOURCC_RMID mmioFOURCC('R','M','I','D')
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#define FOURCC_data mmioFOURCC('d','a','t','a')
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#define FOURCC_MThd mmioFOURCC('M','T','h','d')
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#define FOURCC_MTrk mmioFOURCC('M','T','r','k')
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typedef struct tag_chunkhdr
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{
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FOURCC fourccType;
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DWORD dwLength;
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} CHUNKHDR,
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*PCHUNKHDR;
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#pragma pack(1) // override cl32 default packing, to match disk file.
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typedef struct tag_filehdr
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{
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WORD wFormat;
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WORD wTracks;
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WORD wDivision;
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} FILEHDR,
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*PFILEHDR;
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#pragma pack()
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/* NOTE: This is arbitrary and only used if there is a tempo map but no
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** entry at tick 0.
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*/
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#define MIDI_DEFAULT_TEMPO (500000L)
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#define MIDI_MSG ((BYTE)0x80)
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#define MIDI_NOTEOFF ((BYTE)0x80)
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#define MIDI_NOTEON ((BYTE)0x90)
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#define MIDI_POLYPRESSURE ((BYTE)0xA0)
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#define MIDI_CONTROLCHANGE ((BYTE)0xB0)
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#define MIDI_PROGRAMCHANGE ((BYTE)0xC0)
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#define MIDI_CHANPRESSURE ((BYTE)0xD0)
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#define MIDI_PITCHBEND ((BYTE)0xE0)
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#define MIDI_META ((BYTE)0xFF)
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#define MIDI_SYSEX ((BYTE)0xF0)
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#define MIDI_SYSEXEND ((BYTE)0xF7)
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#define MIDI_META_TRACKNAME ((BYTE)0x03)
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#define MIDI_META_EOT ((BYTE)0x2F)
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#define MIDI_META_TEMPO ((BYTE)0x51)
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#define MIDI_META_TIMESIG ((BYTE)0x58)
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#define MIDI_META_KEYSIG ((BYTE)0x59)
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#define MIDI_META_SEQSPECIFIC ((BYTE)0x7F)
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#endif
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