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/*
Copyright (C) 2001 Paul Davis
Copyright (C) 2004-2008 Grame
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __JackAudioDriver__
#define __JackAudioDriver__
#include "JackDriver.h"
namespace Jack
{
/*!
\brief The base class for audio drivers: drivers with audio ports.
A concrete derived class will have to be defined with a real audio driver API,
either callback based one (like CoreAudio, PortAudio..) ones or blocking ones (like ALSA).
Most of the generic audio handing code is part of this class :
- concrete callback basedd derived subclasses typically have to Open/Close the underlying audio API,
setup the audio callback and implement the Read/Write methods
- concrete blocking based derived subclasses typically have to Open/Close the underlying audio API,
implement the Read/Write methods and "wraps" the driver with the JackThreadDriver class.
*/
class SERVER_EXPORT JackAudioDriver : public JackDriver
{
protected:
jack_default_audio_sample_t* GetInputBuffer(int port_index);
jack_default_audio_sample_t* GetOutputBuffer(int port_index);
jack_default_audio_sample_t* GetMonitorBuffer(int port_index);
void HandleLatencyCallback(int status);
virtual void UpdateLatencies();
int ProcessAsync();
void ProcessGraphAsync();
void ProcessGraphAsyncMaster();
void ProcessGraphAsyncSlave();
int ProcessSync();
void ProcessGraphSync();
void ProcessGraphSyncMaster();
void ProcessGraphSyncSlave();
public:
JackAudioDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table);
virtual ~JackAudioDriver();
virtual int Open(jack_nframes_t buffer_size,
jack_nframes_t samplerate,
bool capturing,
bool playing,
int inchannels,
int outchannels,
bool monitor,
const char* capture_driver_name,
const char* playback_driver_name,
jack_nframes_t capture_latency,
jack_nframes_t playback_latency);
/*
To be called by the underlying driver audio callback, or possibly by a RT thread (using JackThreadedDriver decorator)
when a blocking read/write underlying API is used (like ALSA)
*/
virtual int Process();
virtual int Attach();
virtual int Detach();
virtual int Write();
virtual int SetBufferSize(jack_nframes_t buffer_size);
virtual int SetSampleRate(jack_nframes_t sample_rate);
virtual int ClientNotify(int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2);
};
} // end of namespace
#endif
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