66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
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/* Copyright (c) 1992 Microsoft Corporation */
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/* callback put in separate module because must be fixed */
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#define UNICODE
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//MMSYSTEM
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#define MMNOSOUND - Sound support
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#define MMNOWAVE - Waveform support
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#define MMNOAUX - Auxiliary output support
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#define MMNOJOY - Joystick support
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//MMDDK
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#define NOWAVEDEV - Waveform support
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#define NOAUXDEV - Auxiliary output support
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#define NOJOYDEV - Joystick support
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#include <windows.h>
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#include <mmsystem.h>
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#include <mmddk.h>
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#include "mmsys.h"
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#include "list.h"
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#include "mciseq.h"
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PUBLIC void FAR PASCAL _LOADDS mciSeqCallback (HANDLE h, UINT wMsg, DWORD_PTR dwInstance,
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DWORD_PTR dw1, DWORD_PTR dw2)
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// this function handles messages from the sequencer
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{
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pSeqStreamType pStream = (pSeqStreamType) dwInstance;
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switch (wMsg)
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{
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case MIDISEQ_DONE: // sequencer is done with buff (& wants a new one)
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// clear the beginning and end flags, and set the done flag
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((LPMIDISEQHDR) dw1)->wFlags &= ~(MIDISEQHDR_BOT + MIDISEQHDR_EOT);
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((LPMIDISEQHDR) dw1)->wFlags |= MIDISEQHDR_DONE; // set done bit
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TaskSignal(pStream->streamTaskHandle, WTM_FILLBUFFER); // SIGNAL on this seq
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break;
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case MIDISEQ_RESET: // sequencer wants to reset the stream
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StreamTrackReset(pStream, (UINT) dw1);
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break;
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case MIDISEQ_DONEPLAY:
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TaskSignal(pStream->streamTaskHandle, WTM_DONEPLAY);
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break;
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}
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}
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/***********************************************************************/
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PUBLIC void FAR PASCAL NotifyCallback(HANDLE hStream)
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// Callback for all notifies from MMSEQ
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{
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Notify((pSeqStreamType)hStream, MCI_NOTIFY_SUCCESSFUL);
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}
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/*************************************************************************/
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PUBLIC VOID FAR PASCAL Notify(pSeqStreamType pStream, UINT wStatus)
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// notifies with cb and instance stored in pStream, with wMsg (success, abort..)
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{
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if (pStream->hNotifyCB) {
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mciDriverNotify(pStream->hNotifyCB, pStream->wDeviceID, wStatus);
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pStream->hNotifyCB = NULL; // this signifies that it has been notified
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}
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}
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