JackPortAudioDriver.h

/*
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 __JackPortAudioDriver__
#define __JackPortAudioDriver__

#include "JackAudioDriver.h"
#include "JackPortAudioDevices.h"
#include "JackMMCSS.h"

namespace Jack
{

class JackPortAudioDriver : public JackMMCSS, public JackAudioDriver
{

    private:

        PaStream* fStream;
        jack_default_audio_sample_t** fInputBuffer;
        jack_default_audio_sample_t** fOutputBuffer;
        PaDeviceIndex fInputDevice;
        PaDeviceIndex fOutputDevice;
        PortAudioDevices* fPaDevices;

        static int Render(const void* inputBuffer, void* outputBuffer,
                          unsigned long framesPerBuffer,
                          const PaStreamCallbackTimeInfo* timeInfo,
                          PaStreamCallbackFlags statusFlags,
                          void* userData);

        PaError OpenStream(jack_nframes_t buffer_size);
        void UpdateLatencies();
        int Render(const void* inputBuffer, void* outputBuffer, PaStreamCallbackFlags statusFlags);

    public:

        JackPortAudioDriver(const char* name, const char* alias, JackLockedEngine* engine, JackSynchro* table, PortAudioDevices* pa_devices)
                : JackMMCSS(), JackAudioDriver(name, alias, engine, table), fStream(NULL), fInputBuffer(NULL), fOutputBuffer(NULL),
                fInputDevice(paNoDevice), fOutputDevice(paNoDevice), fPaDevices(pa_devices)
        {}

        virtual ~JackPortAudioDriver()
        {
            delete fPaDevices;
        }

        int Open(jack_nframes_t buffe_size,
                 jack_nframes_t samplerate,
                 bool capturing,
                 bool playing,
                 int chan_in,
                 int chan_out,
                 bool monitor,
                 const char* capture_driver_name,
                 const char* playback_driver_name,
                 jack_nframes_t capture_latency,
                 jack_nframes_t playback_latency);

        int Close();

        int Attach();

        int Start();
        int Stop();

        int Read();
        int Write();

        // BufferSize can be changed
        bool IsFixedBufferSize()
        {
            return false;
        }

        int SetBufferSize(jack_nframes_t buffer_size);
};

} // end of namespace

#endif

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