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/*
*
* Copyright (C) 2009 Christian Gmeiner
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifndef _AUDIO_H_
#define _AUDIO_H_
#include "settings.h"
#include <vdr/tools.h> // for uchar
struct SampleContext {
int channels;
int samplerate;
};
class iAudio : public iSettingsObserver {
public:
iAudio();
virtual ~iAudio() {}
virtual void openDevice() = 0;
virtual void releaseDevice() = 0;
virtual void setup(int channels, int samplerate) = 0;
virtual void write(uchar* data, size_t size) = 0;
virtual void flush() = 0;
virtual void poll(cPoller &poller) { (void)poller; }
void setEnabled(bool on) { dsyslog("audio enable %d", (int)on); enabled = on; }
void setVolume(int v) { vol = v; }
void mute() { setVolume(0); }
void changeVolume(short* pcmbuf, size_t size);
void setAudioChannel(int channel) { audioChannel = channel; }
int getAudioChannel() { return audioChannel; }
virtual void setDigitalAudio(bool on) = 0;
bool isDigitalAudio() { return digitalAudio; }
virtual void settingsChange(SettingsChange change);
virtual void reconfigure() {}
protected:
bool open;
bool enabled;
int vol;
int audioChannel;
bool digitalAudio;
SampleContext curContext;
};
#endif /*_AUDIO_H_*/
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