221 lines
8.2 KiB
C
221 lines
8.2 KiB
C
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/*******************************Module*Header*********************************
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* Module Name: mmsys.h
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*
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* MultiMedia Systems MIDI Sequencer DLL Internal prototypes and data struct's
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* (contains constants, data types, and prototypes common to mci and seq
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* sections of mciseq.drv)
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*
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* Created: 4/10/90
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* Author: GREGSI
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*
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* History:
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*
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* Copyright (c) 1985-1998 Microsoft Corporation
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*
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\****************************************************************************/
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#include <port1632.h>
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/* Set up NT style debugging */
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#ifdef WIN32
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#if DBG
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#define DEBUG
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#endif
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#endif
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#define PUBLIC extern /* Public label. */
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#define PRIVATE static /* Private label. */
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#define EXPORT FAR _LOADDS /* Export function. */
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#define WAIT_FOREVER ((DWORD)(-1))
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#define GETMOTWORD(lpb) ((((WORD)*(LPBYTE)(lpb)) << (8 * sizeof(BYTE))) + *((LPBYTE)(lpb) + sizeof(BYTE)))
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typedef HANDLE HMIDISEQ;
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typedef HMIDISEQ FAR *LPHMIDISEQ;
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/****************************************************************************
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Sequencer error return values
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****************************************************************************/
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#define MIDISEQERR_BASE 96
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#define MIDISEQERR_NOERROR 0 // no error
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#define MIDISEQERR_ERROR (MIDISEQERR_BASE+1) // unspecified error
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#define MIDISEQERR_NOSEQUENCER (MIDISEQERR_BASE+2) // no sequencer present
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#define MIDISEQERR_INVALSEQHANDLE (MIDISEQERR_BASE+3) // given sequence handle is invalid
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#define MIDISEQERR_NOMEM (MIDISEQERR_BASE+4) // memory allocation error
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#define MIDISEQERR_ALLOCATED (MIDISEQERR_BASE+5) // sequencer already allocated
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#define MIDISEQERR_BADERRNUM (MIDISEQERR_BASE+6) // error number out of range
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#define MIDISEQERR_INTERNALERROR (MIDISEQERR_BASE+7) // internal error - see mmddk.h
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#define MIDISEQERR_INVALMIDIHANDLE (MIDISEQERR_BASE+8) // specified MIDI output handle invalid
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#define MIDISEQERR_INVALMSG (MIDISEQERR_BASE+9) // specified msg was invalid
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#define MIDISEQERR_INVALPARM (MIDISEQERR_BASE+10) // msg parameter bad
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#define MIDISEQERR_TIMER (MIDISEQERR_BASE+11) // timer failed
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/****************************************************************************
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Sequencer callback
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****************************************************************************/
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typedef DRVCALLBACK MIDISEQCALLBACK;
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typedef MIDISEQCALLBACK FAR *LPMIDISEQCALLBACK;
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// callback messages
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#define MIDISEQ_DONE 0
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#define MIDISEQ_RESET 1
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#define MIDISEQ_DONEPLAY 2
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/****************************************************************************
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Sequencer data block header
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****************************************************************************/
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typedef struct midiseqhdr_tag {
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LPSTR lpData; // pointer to locked data block
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DWORD dwLength; // length of data in data block
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WORD wFlags; // assorted flags (see defines)
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WORD wTrack; // track number
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struct midiseqhdr_tag far *lpNext; // reserved for sequencer
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DWORD reserved; // reserved for sequencer
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} MIDISEQHDR;
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typedef MIDISEQHDR FAR *LPMIDISEQHDR;
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// defines for MIDISEQOUTHDR flag bits
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#define MIDISEQHDR_DONE 0x0001 // done bit
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#define MIDISEQHDR_BOT 0x0002 // beginning of track
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#define MIDISEQHDR_EOT 0x0004 // end of track
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/****************************************************************************
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Sequencer support structures
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****************************************************************************/
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/* Struct used for the seqinfo message. */
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typedef struct midiseqinfo_tag {
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WORD wDivType; // division type of file
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WORD wResolution; // resolution of file
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DWORD dwLength; // length of sequence in ticks
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BOOL bPlaying; // whether file is playing
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BOOL bSeeking; // whether seek is in progress
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BOOL bReadyToPlay; // if all is set to play
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DWORD dwCurrentTick; // current position in terms of file's ticks
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DWORD dwPlayTo;
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DWORD dwTempo; // tempo of file in microseconds per tick
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// BYTE bTSNum; // numerator of time signature
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// BYTE bTSDenom; // denominator of time signature
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// WORD wNumTracks; // number of tracks in the file
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// HANDLE hPort; // MIDI port handle
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BOOL bTempoFromFile; // whether file's tempo events are to be used
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MMTIME mmSmpteOffset; // offset into file if in smpte format
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WORD wInSync; // in (slave) sync mode
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WORD wOutSync; // out (master) sync mode
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BYTE tempoMapExists;
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BYTE bLegalFile;
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} MIDISEQINFO;
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typedef MIDISEQINFO FAR *LPMIDISEQINFO;
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/****************************************************************************
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Sequencer synchronization constants
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****************************************************************************/
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#define SEQ_SYNC_NOTHING 0
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#define SEQ_SYNC_FILE 1
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#define SEQ_SYNC_MIDI 2
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#define SEQ_SYNC_SMPTE 3
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#define SEQ_SYNC_OFFSET 4
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#define SEQ_SYNC_OFFSET_NOEFFECT 0xFFFFFFFF
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/****************************************************************************
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Sequencer file division-type constants
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****************************************************************************/
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#define SEQ_DIV_PPQN 0
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#define SEQ_DIV_SMPTE_24 24
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#define SEQ_DIV_SMPTE_25 25
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#define SEQ_DIV_SMPTE_30DROP 29
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#define SEQ_DIV_SMPTE_30 30
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/****************************************************************************
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midiSeqMessage constants
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****************************************************************************/
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#define SEQ_PLAY 3
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#define SEQ_RESET 4
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#define SEQ_SETTEMPO 6
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#define SEQ_SETSONGPTR 7
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#define SEQ_SETUPTOPLAY 8
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#define SEQ_STOP 9
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#define SEQ_TRACKDATA 10
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#define SEQ_GETINFO 11
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#define SEQ_SETPORT 12
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#define SEQ_SETPORTOFF 13
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#define SEQ_MSTOTICKS 14
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#define SEQ_TICKSTOMS 15
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#define SEQ_SEEKTICKS 16
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#define SEQ_SYNCSEEKTICKS 17
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#define SEQ_SETSYNCSLAVE 18
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#define SEQ_SETSYNCMASTER 19
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#define SEQ_QUERYGENMIDI 20
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#define SEQ_QUERYHMIDI 21
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/***************** "play to" code for seq_play ***************************/
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#define PLAYTOEND ((DWORD)-1)
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/****************************************************************************
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sequencer support
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****************************************************************************/
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// opening info -- needed for MIDISEQOPEN message
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typedef struct midiseqopendesc_tag {
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DWORD_PTR dwCallback; // callback
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DWORD_PTR dwInstance; // app's private instance information
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HANDLE hStream; // handle to stream
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LPBYTE lpMIDIFileHdr;
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DWORD dwLen; // length of midi file header
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} MIDISEQOPENDESC;
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typedef MIDISEQOPENDESC FAR *LPMIDISEQOPENDESC;
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/****************************************************************************
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MIDISeqMessage() messages
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****************************************************************************/
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#define SEQ_OPEN 1
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#define SEQ_CLOSE 2
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// microseconds per minute -- a handy thing to have around
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#define USecPerMinute 60000000
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#define USecPerSecond 1000000
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#define USecPerMinute 60000000
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#define DefaultTempo 120
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/********************** COMMON SYSTEM PROTOTYPES ************************/
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PUBLIC DWORD_PTR FAR PASCAL midiSeqMessage(HMIDISEQ hMIDISeq, UINT msg,
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DWORD_PTR lParam1, DWORD_PTR lParam2);
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/*** math support ****/
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#ifdef WIN16
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PUBLIC LONG FAR PASCAL muldiv32(long, long, long);
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#else
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#define muldiv32 MulDiv
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#endif // WIN16
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#define WTM_DONEPLAY (WM_USER+0)
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#define WTM_QUITTASK (WM_USER+1)
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#define WTM_FILLBUFFER (WM_USER+2)
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PUBLIC UINT FAR PASCAL TaskBlock(void);
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PUBLIC BOOL FAR PASCAL TaskSignal(DWORD dwThreadId, UINT wMsg);
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PUBLIC VOID FAR PASCAL TaskWaitComplete(HANDLE htask);
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#ifdef WIN32
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#undef Yield
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#define Yield() { LeaveSeq(); EnterSeq(); } /* Should there be a Sleep call ? */
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VOID InitCrit(VOID);
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VOID DeleteCrit(VOID);
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DWORD midiSeqMessageInternal(HMIDISEQ, UINT, DWORD, DWORD);
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VOID EnterSeq(VOID);
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VOID LeaveSeq(VOID);
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#else
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#define EnterSeq()
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#define LeaveSeq()
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#endif // WIN32
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