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88 lines
3.0 KiB
88 lines
3.0 KiB
/*******************************Module*Header*********************************\
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* Module Name: mmseq.d
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*
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* MultiMedia Systems MIDI Sequencer DLL Message AutoDoc.
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*
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* Created: 4/10/90
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* Author: GREGSI & ROBWI
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*
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* History:
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*
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* Copyright (c) 1985-1990 Microsoft Corporation
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*
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\******************************************************************************/
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/****************************************************************************
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*
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* @doc EXTERNAL SEQUENCER
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*
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* @msg SEQ_SETSYNC | Message sent to set the sequence's sync mode.
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*
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* lp1 is a far pointer to a MIDISync structure.
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*
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* @msg SEQ_SETUPTOPLAY | Message sent to tell the sequence to perform all
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* tasks necessary to play. This may entail creating a tempo map for
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* certain types of synchronization.
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*
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* @msg SEQ_OPEN | Message sent to allocate memory for and initialize
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* the sequence.
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*
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* lp1 is a far pointer to a MIDISEQOPENDESC structure.
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*
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* lp2 is a far pointer to an HMIDISEQ to fill in.
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*
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* @comm This is the only message for which hMIDISeq is ignored.
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* The seqHdr struct holds the number of tracks, the
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* division type, and resolution of the sequence. The
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* sequencer does all memory allocation, and much of the
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* initialization here.
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*
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* @msg SEQ_CLOSE | Message sent to deallocate all memory used by a sequence.
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* Sequence Handle no longer valid after this call.
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*
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* @msg SEQ_TRACKDATA | Message sent to provide a buffer of track data
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*
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* lp1 is a far pointer to a buffer of track data in std. MIDI file
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* format.
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*
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* lp2 is the size of the buffer.
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*
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*
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* @msg SEQ_PLAY | Message sent to play a sequence from current position.
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*
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* @msg SEQ_STOP | Message sent to stop the sequence.
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*
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* @comm Stops the sequence, but doesn't affect position.
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* A subsequent Play message will resume from the point stopped at.
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*
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* @msg SEQ_RESET | Message sent to reset the sequence's position to the
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* beginning of the piece.
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*
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* @comm Stops the sequence if playing, and sets it to play from the
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* beginning.
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*
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* @msg SEQ_SONGPTR | Message sent to explicitly change the sequence
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* position.
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*
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* lp1 is a song position.
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*
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* @comm If the sequence is in ppqn format, lp1 specifies 16th notes
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* from the beginning of the song; otherwise, if the sequence is in
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* SMPTE format, lp1 specifies absolute SMPTE time (hr:min:sec:frame)
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* format.
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*
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* @msg SEQ_SETTEMPO | Message sent to explicitly change the sequence tempo.
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*
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* lp1 is the tempo for the sequence. For ppqn based sequences,
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* this will be beats per minute. For SMPTE based sequences, this
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* will be frames per minute.
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*
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* @msg SEQ_GETINFO | Message sent to get an info structure that reflects the
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* current state of the sequence.
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*
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* lp1 is a pointer to SeqInfo structure.
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*
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****************************************************************************/
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