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58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*
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Copyright (C) 2007 StrmnNrmn
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#ifndef HLEAUDIO_AUDIOBUFFER_H_
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#define HLEAUDIO_AUDIOBUFFER_H_
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#include "Base/Types.h"
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struct Sample
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{
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s16 L;
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s16 R;
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};
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// A utility class for buffering up samples, upsampling to the desired
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// output frequency and copying them to the desired output buffer.
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//
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// N.B. This class currently does no synchronisation - it's assumed that
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// the calling code will handle this
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class CAudioBuffer
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{
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public:
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CAudioBuffer( u32 buffer_size );
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~CAudioBuffer();
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void AddSamples( const Sample * samples, u32 num_samples, u32 frequency, u32 output_freq );
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u32 Drain( Sample * samples, u32 num_samples );
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u32 GetNumBufferedSamples() const;
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private:
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Sample * mBufferBegin;
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Sample * mBufferEnd;
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const Sample * volatile mReadPtr;
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Sample * volatile mWritePtr;
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};
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#endif // HLEAUDIO_AUDIOBUFFER_H_
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