101 lines
4 KiB
C
101 lines
4 KiB
C
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//
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// Copyright (c) 1996-2000 Microsoft Corporation. All rights reserved.
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//
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// CSynth.h
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//
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#ifndef __CSYNTH_H__
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#define __CSYNTH_H__
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#include "synth.h"
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#define MAX_CHANNEL_GROUPS 1000
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#define MAX_VOICES 1000
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#define DEFAULT_CHANNEL_GROUPS 32
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#define DEFAULT_VOICES 32
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#ifndef IDirectMusicSynthSink
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#define IDirectMusicSynthSink ISynthSinkDMus
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#endif // IDirectMusicSynthSink
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struct IDirectMusicSynthSink;
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/*****************************************************************************
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* class CSynth
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*****************************************************************************
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* Class declaration for the synth object itself.
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* Manages the CControlLogic and CInstManager objects.
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*/
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class CSynth : public CListItem
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{
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friend class CControlLogic;
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public:
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CSynth();
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~CSynth();
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CSynth * GetNext() {return(CSynth *)CListItem::GetNext();};
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HRESULT SetStereoMode(DWORD dwChannels) ;
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HRESULT SetSampleRate(DWORD dwSampleRate) ;
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HRESULT Activate(DWORD dwSampleRate, DWORD dwChannels);
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HRESULT Deactivate();
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HRESULT Download(LPHANDLE phDownload, void * pdwData, LPBOOL bpFree);
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HRESULT Unload(HANDLE hDownload,HRESULT ( CALLBACK *lpFreeMemory)(HANDLE,HANDLE),HANDLE hUserData);
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HRESULT PlayBuffer(IDirectMusicSynthSink *pSynthSink,REFERENCE_TIME rt, LPBYTE lpBuffer, DWORD cbBuffer, ULONG ulCable);
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HRESULT SetNumChannelGroups(DWORD dwCableCount);
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void SetGainAdjust(VREL vrGainAdjust);
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HRESULT Open(DWORD dwCableCount, DWORD dwVoices);
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HRESULT Close();
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void ResetPerformanceStats();
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HRESULT AllNotesOff();
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HRESULT SetMaxVoices(short nMaxVoices,short nTempVoices);
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HRESULT GetMaxVoices(short * pnMaxVoices,short * pnTempVoices);
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HRESULT GetPerformanceStats(PerfStats *pStats);
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void Mix(short *pBuffer,DWORD dwLength,LONGLONG llPosition);
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HRESULT SetChannelPriority(DWORD dwChannelGroup,DWORD dwChannel,DWORD dwPriority);
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HRESULT GetChannelPriority(DWORD dwChannelGroup,DWORD dwChannel,LPDWORD pdwPriority);
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private:
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void StealNotes(STIME stTime);
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void FinishMix(short *pBuffer,DWORD dwlength);
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CVoice * OldestVoice();
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void QueueVoice(CVoice *pVoice);
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CVoice * StealVoice(DWORD dwPriority);
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STIME m_stLastTime; // Sample time of last mix.
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CVoiceList m_VoicesFree; // List of available voices.
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CVoiceList m_VoicesExtra; // Extra voices for temporary overload.
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CVoiceList m_VoicesInUse; // List of voices currently in use.
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short m_nMaxVoices; // Number of allowed voices.
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short m_nExtraVoices; // Number of voices over the limit that can be used in a pinch.
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STIME m_stLastStats; // Last perfstats refresh.
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PerfStats m_BuildStats; // Performance info accumulator.
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PerfStats m_CopyStats; // Performance information for display.
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public:
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// DLS-1 compatibility parameters: set these off to emulate hardware
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// which can't vary volume/pan during playing of a note.
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VREL m_vrGainAdjust; // Final output gain adjust
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BOOL m_fAllowPanWhilePlayingNote;
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BOOL m_fAllowVolumeChangeWhilePlayingNote;
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STIME m_stMinSpan; // Minimum time allowed for mix time span.
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STIME m_stMaxSpan; // Maximum time allowed for mix time span.
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DWORD m_dwSampleRate;
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DWORD m_dwStereo;
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CInstManager m_Instruments; // Instrument manager.
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CControlLogic ** m_ppControl; // Array of open ControlLogics.
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DWORD m_dwControlCount; // # of open CLs.
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CRITICAL_SECTION m_CriticalSection; // Critical section to manage access.
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BOOL m_fCSInitialized;
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};
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#endif// __CSYNTH_H__
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