/*******************************Module*Header********************************* * Module Name: mmsys.h * * MultiMedia Systems MIDI Sequencer DLL Internal prototypes and data struct's * (contains constants, data types, and prototypes common to mci and seq * sections of mciseq.drv) * * Created: 4/10/90 * Author: GREGSI * * History: * * Copyright (c) 1985-1991 Microsoft Corporation * \****************************************************************************/ #include /* Set up NT style debugging */ #ifdef WIN32 #if DBG #define DEBUG #endif #endif #define PUBLIC extern /* Public label. */ #define PRIVATE static /* Private label. */ #define EXPORT FAR _LOADDS /* Export function. */ #define WAIT_FOREVER ((DWORD)(-1)) #define GETMOTWORD(lpb) ((((WORD)*(LPBYTE)(lpb)) << (8 * sizeof(BYTE))) + *((LPBYTE)(lpb) + sizeof(BYTE))) typedef HANDLE HMIDISEQ; typedef HMIDISEQ FAR *LPHMIDISEQ; /**************************************************************************** Sequencer error return values ****************************************************************************/ #define MIDISEQERR_BASE 96 #define MIDISEQERR_NOERROR 0 // no error #define MIDISEQERR_ERROR (MIDISEQERR_BASE+1) // unspecified error #define MIDISEQERR_NOSEQUENCER (MIDISEQERR_BASE+2) // no sequencer present #define MIDISEQERR_INVALSEQHANDLE (MIDISEQERR_BASE+3) // given sequence handle is invalid #define MIDISEQERR_NOMEM (MIDISEQERR_BASE+4) // memory allocation error #define MIDISEQERR_ALLOCATED (MIDISEQERR_BASE+5) // sequencer already allocated #define MIDISEQERR_BADERRNUM (MIDISEQERR_BASE+6) // error number out of range #define MIDISEQERR_INTERNALERROR (MIDISEQERR_BASE+7) // internal error - see mmddk.h #define MIDISEQERR_INVALMIDIHANDLE (MIDISEQERR_BASE+8) // specified MIDI output handle invalid #define MIDISEQERR_INVALMSG (MIDISEQERR_BASE+9) // specified msg was invalid #define MIDISEQERR_INVALPARM (MIDISEQERR_BASE+10) // msg parameter bad #define MIDISEQERR_TIMER (MIDISEQERR_BASE+11) // timer failed /**************************************************************************** Sequencer callback ****************************************************************************/ typedef DRVCALLBACK MIDISEQCALLBACK; typedef MIDISEQCALLBACK FAR *LPMIDISEQCALLBACK; // callback messages #define MIDISEQ_DONE 0 #define MIDISEQ_RESET 1 #define MIDISEQ_DONEPLAY 2 /**************************************************************************** Sequencer data block header ****************************************************************************/ typedef struct midiseqhdr_tag { LPSTR lpData; // pointer to locked data block DWORD dwLength; // length of data in data block WORD wFlags; // assorted flags (see defines) WORD wTrack; // track number struct midiseqhdr_tag far *lpNext; // reserved for sequencer DWORD reserved; // reserved for sequencer } MIDISEQHDR; typedef MIDISEQHDR FAR *LPMIDISEQHDR; // defines for MIDISEQOUTHDR flag bits #define MIDISEQHDR_DONE 0x0001 // done bit #define MIDISEQHDR_BOT 0x0002 // beginning of track #define MIDISEQHDR_EOT 0x0004 // end of track /**************************************************************************** Sequencer support structures ****************************************************************************/ /* Struct used for the seqinfo message. */ typedef struct midiseqinfo_tag { WORD wDivType; // division type of file WORD wResolution; // resolution of file DWORD dwLength; // length of sequence in ticks BOOL bPlaying; // whether file is playing BOOL bSeeking; // whether seek is in progress BOOL bReadyToPlay; // if all is set to play DWORD dwCurrentTick; // current position in terms of file's ticks DWORD dwPlayTo; DWORD dwTempo; // tempo of file in microseconds per tick // BYTE bTSNum; // numerator of time signature // BYTE bTSDenom; // denominator of time signature // WORD wNumTracks; // number of tracks in the file // HANDLE hPort; // MIDI port handle BOOL bTempoFromFile; // whether file's tempo events are to be used MMTIME mmSmpteOffset; // offset into file if in smpte format WORD wInSync; // in (slave) sync mode WORD wOutSync; // out (master) sync mode BYTE tempoMapExists; BYTE bLegalFile; } MIDISEQINFO; typedef MIDISEQINFO FAR *LPMIDISEQINFO; /**************************************************************************** Sequencer synchronization constants ****************************************************************************/ #define SEQ_SYNC_NOTHING 0 #define SEQ_SYNC_FILE 1 #define SEQ_SYNC_MIDI 2 #define SEQ_SYNC_SMPTE 3 #define SEQ_SYNC_OFFSET 4 #define SEQ_SYNC_OFFSET_NOEFFECT 0xFFFFFFFF /**************************************************************************** Sequencer file division-type constants ****************************************************************************/ #define SEQ_DIV_PPQN 0 #define SEQ_DIV_SMPTE_24 24 #define SEQ_DIV_SMPTE_25 25 #define SEQ_DIV_SMPTE_30DROP 29 #define SEQ_DIV_SMPTE_30 30 /**************************************************************************** midiSeqMessage constants ****************************************************************************/ #define SEQ_PLAY 3 #define SEQ_RESET 4 #define SEQ_SETTEMPO 6 #define SEQ_SETSONGPTR 7 #define SEQ_SETUPTOPLAY 8 #define SEQ_STOP 9 #define SEQ_TRACKDATA 10 #define SEQ_GETINFO 11 #define SEQ_SETPORT 12 #define SEQ_SETPORTOFF 13 #define SEQ_MSTOTICKS 14 #define SEQ_TICKSTOMS 15 #define SEQ_SEEKTICKS 16 #define SEQ_SYNCSEEKTICKS 17 #define SEQ_SETSYNCSLAVE 18 #define SEQ_SETSYNCMASTER 19 #define SEQ_QUERYGENMIDI 20 #define SEQ_QUERYHMIDI 21 /***************** "play to" code for seq_play ***************************/ #define PLAYTOEND ((DWORD)-1) /**************************************************************************** sequencer support ****************************************************************************/ // opening info -- needed for MIDISEQOPEN message typedef struct midiseqopendesc_tag { DWORD dwCallback; // callback DWORD dwInstance; // app's private instance information HANDLE hStream; // handle to stream LPBYTE lpMIDIFileHdr; DWORD dwLen; // length of midi file header } MIDISEQOPENDESC; typedef MIDISEQOPENDESC FAR *LPMIDISEQOPENDESC; /**************************************************************************** MIDISeqMessage() messages ****************************************************************************/ #define SEQ_OPEN 1 #define SEQ_CLOSE 2 // microseconds per minute -- a handy thing to have around #define USecPerMinute 60000000 #define USecPerSecond 1000000 #define USecPerMinute 60000000 #define DefaultTempo 120 /********************** COMMON SYSTEM PROTOTYPES ************************/ PUBLIC DWORD FAR PASCAL midiSeqMessage(HMIDISEQ hMIDISeq, UINT msg, DWORD lParam1, DWORD lParam2); /*** math support ****/ #ifdef WIN16 PUBLIC LONG FAR PASCAL muldiv32(long, long, long); #else #define muldiv32 MulDiv #endif // WIN16 #define WTM_DONEPLAY (WM_USER+0) #define WTM_QUITTASK (WM_USER+1) #define WTM_FILLBUFFER (WM_USER+2) PUBLIC UINT FAR PASCAL TaskBlock(void); PUBLIC BOOL FAR PASCAL TaskSignal(HANDLE htask, UINT wMsg); PUBLIC VOID FAR PASCAL TaskWaitComplete(HANDLE htask); #ifdef WIN32 #undef Yield #define Yield() { LeaveSeq(); EnterSeq(); } /* Should there be a Sleep call ? */ VOID InitCrit(VOID); VOID DeleteCrit(VOID); DWORD midiSeqMessageInternal(HMIDISEQ, UINT, DWORD, DWORD); VOID EnterSeq(VOID); VOID LeaveSeq(VOID); #else #define EnterSeq() #define LeaveSeq() #endif // WIN32