102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
/*
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Copyright (C) 2001 Paul Davis
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Copyright (C) 2004-2008 Grame
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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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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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __JackAudioDriver__
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#define __JackAudioDriver__
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#include "JackDriver.h"
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namespace Jack
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{
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/*!
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\brief The base class for audio drivers: drivers with audio ports.
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A concrete derived class will have to be defined with a real audio driver API,
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either callback based one (like CoreAudio, PortAudio..) ones or blocking ones (like ALSA).
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Most of the generic audio handing code is part of this class :
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- concrete callback basedd derived subclasses typically have to Open/Close the underlying audio API,
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setup the audio callback and implement the Read/Write methods
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- concrete blocking based derived subclasses typically have to Open/Close the underlying audio API,
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implement the Read/Write methods and "wraps" the driver with the JackThreadDriver class.
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*/
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class SERVER_EXPORT JackAudioDriver : public JackDriver
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{
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protected:
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jack_default_audio_sample_t* GetInputBuffer(int port_index);
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jack_default_audio_sample_t* GetOutputBuffer(int port_index);
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jack_default_audio_sample_t* GetMonitorBuffer(int port_index);
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void HandleLatencyCallback(int status);
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virtual void UpdateLatencies();
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int ProcessAsync();
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void ProcessGraphAsync();
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void ProcessGraphAsyncMaster();
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void ProcessGraphAsyncSlave();
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int ProcessSync();
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void ProcessGraphSync();
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void ProcessGraphSyncMaster();
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void ProcessGraphSyncSlave();
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public:
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JackAudioDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table);
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virtual ~JackAudioDriver();
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virtual int Open(jack_nframes_t buffer_size,
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jack_nframes_t samplerate,
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bool capturing,
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bool playing,
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int inchannels,
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int outchannels,
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bool monitor,
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const char* capture_driver_name,
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const char* playback_driver_name,
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jack_nframes_t capture_latency,
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jack_nframes_t playback_latency);
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/*
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To be called by the underlying driver audio callback, or possibly by a RT thread (using JackThreadedDriver decorator)
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when a blocking read/write underlying API is used (like ALSA)
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*/
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virtual int Process();
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virtual int Attach();
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virtual int Detach();
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virtual int Write();
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virtual int SetBufferSize(jack_nframes_t buffer_size);
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virtual int SetSampleRate(jack_nframes_t sample_rate);
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virtual int ClientNotify(int refnum, const char* name, int notify, int sync, const char* message, int value1, int value2);
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};
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} // end of namespace
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#endif
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