Colby Klein
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
#include "global.h"
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#include "RageSoundReader_PostBuffering.h"
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#include "RageSoundUtil.h"
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#include "RageThreads.h"
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#include "RageUtil.h"
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/*
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* This filter is normally inserted after extended buffering, implementing
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* properties that do not seek the sound, allowing these properties to be
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* changed with low latency.
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*/
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RageMutex g_Mutex("PostBuffering");
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static float g_fMasterVolume = 1.0f;
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RageSoundReader_PostBuffering::RageSoundReader_PostBuffering( RageSoundReader *pSource ):
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RageSoundReader_Filter( pSource )
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{
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m_fVolume = 1.0f;
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}
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void RageSoundReader_PostBuffering::SetMasterVolume(float fVolume) {
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LockMut(g_Mutex);
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g_fMasterVolume = fVolume;
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}
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int RageSoundReader_PostBuffering::Read( float *pBuf, int iFrames )
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{
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iFrames = m_pSource->Read( pBuf, iFrames );
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if( iFrames < 0 )
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return iFrames;
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// Combine the sound's volume with master volume.
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g_Mutex.Lock();
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// Square the master so lower volumes are more sensitive.
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// This lines up better with perceived volume.
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float fVolume = m_fVolume * g_fMasterVolume * g_fMasterVolume;
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fVolume = clamp( fVolume, 0, 1 );
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g_Mutex.Unlock();
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if( fVolume != 1.0f )
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RageSoundUtil::Attenuate( pBuf, iFrames * this->GetNumChannels(), fVolume );
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return iFrames;
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}
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bool RageSoundReader_PostBuffering::SetProperty( const RString &sProperty, float fValue )
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{
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if( sProperty == "Volume" )
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{
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m_fVolume = fValue;
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return true;
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}
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return RageSoundReader_Filter::SetProperty( sProperty, fValue );
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}
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/*
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* Copyright (c) 2007 Glenn Maynard
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* All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, and/or sell copies of the Software, and to permit persons to
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* whom the Software is furnished to do so, provided that the above
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* copyright notice(s) and this permission notice appear in all copies of
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* the Software and that both the above copyright notice(s) and this
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* permission notice appear in supporting documentation.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF
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* THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS
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* INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT
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* OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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