svcore
1.9
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ 00002 00003 /* 00004 Sonic Visualiser 00005 An audio file viewer and annotation editor. 00006 Centre for Digital Music, Queen Mary, University of London. 00007 This file copyright 2006 Chris Cannam. 00008 00009 This program is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU General Public License as 00011 published by the Free Software Foundation; either version 2 of the 00012 License, or (at your option) any later version. See the file 00013 COPYING included with this distribution for more information. 00014 */ 00015 00016 #ifndef _AUDIO_PLAY_SOURCE_H_ 00017 #define _AUDIO_PLAY_SOURCE_H_ 00018 00019 struct Auditionable { 00020 virtual ~Auditionable() { } 00021 }; 00022 00031 class AudioPlaySource 00032 { 00033 public: 00034 virtual ~AudioPlaySource() { } 00035 00040 virtual void play(int startFrame) = 0; 00041 00045 virtual void stop() = 0; 00046 00050 virtual bool isPlaying() const = 0; 00051 00056 virtual int getCurrentPlayingFrame() = 0; 00057 00062 virtual bool getOutputLevels(float &left, float &right) = 0; 00063 00068 virtual int getSourceSampleRate() const = 0; 00069 00075 virtual int getTargetSampleRate() const = 0; 00076 00083 virtual int getTargetBlockSize() const = 0; 00084 00091 virtual int getTargetChannelCount() const = 0; 00092 00097 virtual void setAuditioningEffect(Auditionable *) = 0; 00098 00099 }; 00100 00101 #endif