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/*************************************************************************** |
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* * |
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* LinuxSampler - modular, streaming capable sampler * |
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* * |
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* Copyright (C) 2003 by Benno Senoner and Christian Schoenebeck * |
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* * |
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* This program is free software; you can redistribute it and/or modify * |
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* it under the terms of the GNU General Public License as published by * |
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* the Free Software Foundation; either version 2 of the License, or * |
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* (at your option) any later version. * |
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* * |
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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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* * |
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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, * |
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* MA 02111-1307 USA * |
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***************************************************************************/ |
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#ifndef __AUDIO_H__ |
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#define __AUDIO_H__ |
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#include "global.h" |
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// just symbol prototyping |
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class AudioThread; |
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/** |
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* Abstract class for audio output in LinuxSampler. This class will be |
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* derived by specialized classes which implement the connection to a |
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* specific audio output system (e.g. Alsa, Jack). |
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*/ |
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class AudioIO { |
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public: |
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AudioIO(); |
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virtual ~AudioIO(); |
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virtual void Activate() = 0; |
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virtual void Close() = 0; |
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virtual void* GetInterleavedOutputBuffer() = 0; |
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virtual void* GetChannelOutputBufer(uint Channel) = 0; |
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inline void AssignEngine(AudioThread* pAudioThread) { pEngine = pAudioThread; }; |
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inline bool Initialized() { return bInitialized; }; |
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inline bool Interleaved() { return bInterleaved; }; |
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inline uint Channels() { return uiChannels; }; |
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inline uint SampleRate() { return uiSamplerate; }; |
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inline uint MaxSamplesPerCycle() { return uiMaxSamplesPerCycle; }; |
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protected: |
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bool bInitialized; |
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bool bInterleaved; |
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uint uiChannels; |
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uint uiSamplerate; |
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uint uiMaxSamplesPerCycle; ///< in sample points |
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AudioThread* pEngine; |
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}; |
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#endif // __AUDIO_H__ |