129 lines
4.3 KiB
C
129 lines
4.3 KiB
C
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//////////////////////////////////////////////////////////////////////
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// LocalTTSEngineSite.h: interface for the CLocalTTSEngineSite class.
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//
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// Created by JOEM 04-2000
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// Copyright (C) 2000 Microsoft Corporation
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// All Rights Reserved
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//
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/////////////////////////////////////////////////////// JOEM 4-2000 //
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#if !defined(AFX_LOCALTTSENGINESITE_H__70B0DA93_23F5_4F17_B525_4027F78AF195__INCLUDED_)
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#define AFX_LOCALTTSENGINESITE_H__70B0DA93_23F5_4F17_B525_4027F78AF195__INCLUDED_
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#include <sapiddk.h>
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#include "tsm.h"
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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//-------------------------------------------
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// Translate -10 <--> +10 rate control to
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// 10th root of three rate scale
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//-------------------------------------------
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enum USER_RATE_VALUE
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{
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MIN_RATE = -10,
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BASE_RATE = 0,
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MAX_RATE = 10,
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};
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const double g_dRateScale[] =
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{
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1.0,
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1.1161231740339044344426141383771, // 3 ^ 1/10
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1.2457309396155173259666803366403,
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1.3903891703159093404852542946161,
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1.5518455739153596742733451355167,
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1.7320508075688772935274463415059,
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1.9331820449317627515248789432662,
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2.1576692799745930995549489159803,
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2.4082246852806920462855086141912,
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2.6878753795222865835819210737269,
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3,
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};
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struct Event
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{
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SPEVENT event;
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Event* pPrev;
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Event* pNext;
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};
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class CLocalTTSEngineSite : public ISpTTSEngineSite
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{
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public:
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CLocalTTSEngineSite();
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~CLocalTTSEngineSite();
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public:
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//--- IUnknown --------------------------------------
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STDMETHOD(QueryInterface) ( REFIID iid, void** ppvObject );
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STDMETHOD_(ULONG, AddRef)(void);
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STDMETHOD_(ULONG, Release) (void);
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//--- ISpTTSEngineSite --------------------------------------
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STDMETHOD(GetEventInterest)( ULONGLONG * pullEventInterest )
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{ return m_pMainOutputSite->GetEventInterest(pullEventInterest); }
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STDMETHOD(GetRate)( long* plRateAdjust );
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STDMETHOD(GetSkipInfo)( SPVSKIPTYPE* peType, long* plNumItems );
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STDMETHOD(CompleteSkip)( long lNumSkipped );
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STDMETHOD(GetVolume)( USHORT* punVolume );
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STDMETHOD(AddEvents)(const SPEVENT* pEventArray, ULONG ulCount );
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STDMETHOD(Write)( const void* pBuff, ULONG cb, ULONG *pcbWritten );
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STDMETHOD_(DWORD, GetActions)( void );
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//--- CLocalTTSEngineSite --------------------------------------
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void SetOutputSite(ISpTTSEngineSite* pOutputSite);
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STDMETHOD(SetBufferSize)(const ULONG ulSeconds);
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STDMETHOD(SetOutputFormat)(const GUID * pOutputFormatId, const WAVEFORMATEX *pOutputFormat);
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void UpdateBytesWritten()
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{ m_ullPreviousBytesReceived = m_ullTotalBytesReceived; }
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private:
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STDMETHOD(WriteBuffer)();
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STDMETHOD(WriteToSAPI)( const void* pvBuff, const ULONG cb, bool* pfAbort );
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void ComputeRateAdj(const long lRate, float* flRate);
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STDMETHOD(ApplyGain)(const void* pvInBuff, void** ppvOutBuff, const int iNumSamples);
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STDMETHOD(SendEvents)();
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void RescheduleEvents(Event* pStart);
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void FlushEvents(const ULONG cb);
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private:
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volatile LONG m_vcRef;
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// output vars
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ISpTTSEngineSite* m_pMainOutputSite;
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const GUID* m_pOutputFormatId;
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WAVEFORMATEX* m_pOutputFormat;
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// audio buffer
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char* m_pcBuffer;
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ULONG m_ulBufferBytes;
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ULONG m_ulBufferSeconds;
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ULONG m_ulMinBufferShift;
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ULONG m_ulDataEnd;
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ULONG m_ulCurrentByte;
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ULONG m_ulSkipForward;
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// eventing managers
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Event* m_pEventQueue;
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Event* m_pCurrentEvent;
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Event* m_pLastEvent;
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// event ullAudioStreamOffset managers
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ULONGLONG m_ullTotalBytesReceived; // sums every byte as they come in
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ULONGLONG m_ullPreviousBytesReceived; // sums every byte of previous ::Write calls
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ULONGLONG m_ullBytesWritten; // sums every byte written (before rate adj)
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ULONGLONG m_ullBytesWrittenToSAPI; // sums every byte written to SAPI (differs due to rate change)
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LONG m_lTotalBytesSkipped; // cumulative skipped, plus or minus
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// rate changer
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CTsm* m_pTsm;
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float m_flRateAdj;
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double m_flVol;
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};
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#endif // !defined(AFX_LOCALTTSENGINESITE_H__70B0DA93_23F5_4F17_B525_4027F78AF195__INCLUDED_)
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