95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
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// Copyright (c) 1999 Microsoft Corporation. All rights reserved.
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//
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// Implementation of CAutDirectMusicAudioPath.
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//
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#include "stdinc.h"
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#include "autaudiopath.h"
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const WCHAR CAutDirectMusicAudioPath::ms_wszClassName[] = L"AudioPath";
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//////////////////////////////////////////////////////////////////////
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// Method Names/DispIDs
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const DISPID DMPDISP_SetVolume = 1;
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const DISPID DMPDISP_GetVolume = 2;
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const AutDispatchMethod CAutDirectMusicAudioPath::ms_Methods[] =
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{
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// dispid, name,
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// return: type, (opt), (iid),
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// parm 1: type, opt, iid,
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// parm 2: type, opt, iid,
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// ...
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// ADT_None
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{ DMPDISP_SetVolume, L"SetVolume",
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ADPARAM_NORETURN,
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ADT_Long, false, &IID_NULL, // volume
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ADT_Long, true, &IID_NULL, // duration
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ADT_None },
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{ DMPDISP_GetVolume, L"GetVolume",
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ADT_Long, true, &IID_NULL, // returned volume
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ADT_None },
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{ DISPID_UNKNOWN }
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};
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const DispatchHandlerEntry<CAutDirectMusicAudioPath> CAutDirectMusicAudioPath::ms_Handlers[] =
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{
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{ DMPDISP_SetVolume, SetVolume },
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{ DMPDISP_GetVolume, GetVolume },
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{ DISPID_UNKNOWN }
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};
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//////////////////////////////////////////////////////////////////////
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// Creation
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CAutDirectMusicAudioPath::CAutDirectMusicAudioPath(
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IUnknown* pUnknownOuter,
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const IID& iid,
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void** ppv,
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HRESULT *phr)
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: BaseImpAudioPath(pUnknownOuter, iid, ppv, phr),
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m_lVolume(0)
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{
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}
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HRESULT
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CAutDirectMusicAudioPath::CreateInstance(
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IUnknown* pUnknownOuter,
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const IID& iid,
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void** ppv)
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{
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HRESULT hr = S_OK;
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CAutDirectMusicAudioPath *pInst = new CAutDirectMusicAudioPath(pUnknownOuter, iid, ppv, &hr);
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if (FAILED(hr))
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{
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delete pInst;
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return hr;
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}
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if (pInst == NULL)
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return E_OUTOFMEMORY;
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return hr;
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}
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//////////////////////////////////////////////////////////////////////
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// Automation methods
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HRESULT
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CAutDirectMusicAudioPath::SetVolume(AutDispatchDecodedParams *paddp)
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{
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LONG lVol = paddp->params[0].lVal;
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LONG lDuration = paddp->params[1].lVal;
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m_lVolume = ClipLongRange(lVol, -9600, 0);
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return m_pITarget->SetVolume(m_lVolume, lDuration);
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}
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HRESULT
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CAutDirectMusicAudioPath::GetVolume(AutDispatchDecodedParams *paddp)
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{
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LONG *plRet = reinterpret_cast<LONG*>(paddp->pvReturn);
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if (plRet)
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*plRet = m_lVolume;
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return S_OK;
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}
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