Source code of Windows XP (NT5)
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// DirectSoundFXCompressorPage.cpp : Implementation of CDirectSoundFXCompressorPage
#include "stdafx.h"
#include "Dsdmoprp.h"
#include "DirectSoundFXCompressorPage.h"
/////////////////////////////////////////////////////////////////////////////
// CDirectSoundFXCompressorPage
CDirectSoundFXCompressorPage::CDirectSoundFXCompressorPage()
{
m_dwTitleID = IDS_TITLEDirectSoundFXCompressorPage;
m_dwHelpFileID = IDS_HELPFILEDirectSoundFXCompressorPage;
m_dwDocStringID = IDS_DOCSTRINGDirectSoundFXCompressorPage;
m_rgpHandlers[0] = &m_sliderGain;
m_rgpHandlers[1] = &m_sliderAttack;
m_rgpHandlers[2] = &m_sliderRelease;
m_rgpHandlers[3] = &m_sliderThreshold;
m_rgpHandlers[4] = &m_sliderRatio;
m_rgpHandlers[5] = &m_sliderPredelay;
m_rgpHandlers[6] = NULL;
}
STDMETHODIMP CDirectSoundFXCompressorPage::SetObjects(ULONG nObjects, IUnknown **ppUnk)
{
if (nObjects < 1 || nObjects > 1)
return E_UNEXPECTED;
HRESULT hr = ppUnk[0]->QueryInterface(IID_IDirectSoundFXCompressor, reinterpret_cast<void**>(&m_IDSFXCompressor));
return hr;
}
STDMETHODIMP CDirectSoundFXCompressorPage::Apply(void)
{
if (!m_IDSFXCompressor)
return E_UNEXPECTED;
DSFXCompressor dsfxcompressor;
ZeroMemory(&dsfxcompressor, sizeof(DSFXCompressor));
dsfxcompressor.fGain = m_sliderGain.GetValue();
dsfxcompressor.fAttack = m_sliderAttack.GetValue();
dsfxcompressor.fRelease = m_sliderRelease.GetValue();
dsfxcompressor.fThreshold = m_sliderThreshold.GetValue();
dsfxcompressor.fRatio = m_sliderRatio.GetValue();
dsfxcompressor.fPredelay = m_sliderPredelay.GetValue();
HRESULT hr = m_IDSFXCompressor->SetAllParameters(&dsfxcompressor);
if (FAILED(hr))
return hr;
SetDirty(FALSE);
return S_OK;
}
LRESULT CDirectSoundFXCompressorPage::OnInitDialog(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
if (!m_IDSFXCompressor)
return 1;
DSFXCompressor dsfxcompressor;
ZeroMemory(&dsfxcompressor, sizeof(DSFXCompressor));
m_IDSFXCompressor->GetAllParameters(&dsfxcompressor);
m_sliderGain.Init(GetDlgItem(IDC_SLIDER_Gain), GetDlgItem(IDC_EDIT_Gain), -60, 60, false);
m_sliderGain.SetValue(dsfxcompressor.fGain);
m_sliderAttack.Init(GetDlgItem(IDC_SLIDER_Attack), GetDlgItem(IDC_EDIT_Attack), static_cast<float>(.01), 500, false);
m_sliderAttack.SetValue(dsfxcompressor.fAttack);
m_sliderRelease.Init(GetDlgItem(IDC_SLIDER_Release), GetDlgItem(IDC_EDIT_Release), 50, 3000, false);
m_sliderRelease.SetValue(dsfxcompressor.fRelease);
m_sliderThreshold.Init(GetDlgItem(IDC_SLIDER_Threshold), GetDlgItem(IDC_EDIT_Threshold), -60, 0, false);
m_sliderThreshold.SetValue(dsfxcompressor.fThreshold);
m_sliderRatio.Init(GetDlgItem(IDC_SLIDER_Ratio), GetDlgItem(IDC_EDIT_Ratio), 1, 100, false);
m_sliderRatio.SetValue(dsfxcompressor.fRatio);
m_sliderPredelay.Init(GetDlgItem(IDC_SLIDER_Predelay), GetDlgItem(IDC_EDIT_Predelay), 0, 4, false);
m_sliderPredelay.SetValue(dsfxcompressor.fPredelay);
return 1;
}
LRESULT CDirectSoundFXCompressorPage::OnControlMessage(UINT uMsg, WPARAM wParam, LPARAM lParam, BOOL& bHandled)
{
LRESULT lr = MessageHandlerChain(m_rgpHandlers, uMsg, wParam, lParam, bHandled);
if (bHandled)
SetDirty(TRUE);
return lr;
}