AUD_JackDevice.h

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/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * Copyright 2009-2011 Jörg Hermann Müller
 *
 * This file is part of AudaSpace.
 *
 * Audaspace 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.
 *
 * AudaSpace 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 Audaspace; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef AUD_JACKDEVICE
#define AUD_JACKDEVICE


#include "AUD_SoftwareDevice.h"
#include "AUD_Buffer.h"

#include <string>

#if defined(__APPLE__) // always first include for jack weaklinking !
#include <weakjack.h>
#endif

#include <jack.h>
#include <ringbuffer.h>

typedef void (*AUD_syncFunction)(void*, int, float);

class AUD_JackDevice : public AUD_SoftwareDevice
{
private:
    jack_port_t** m_ports;

    jack_client_t* m_client;

    AUD_Buffer m_buffer;

    AUD_Buffer m_deinterleavebuf;

    jack_ringbuffer_t** m_ringbuffers;

    bool m_valid;

    static void jack_shutdown(void *data);

    static int jack_mix(jack_nframes_t length, void *data);

    static int jack_sync(jack_transport_state_t state, jack_position_t* pos, void* data);

    jack_transport_state_t m_nextState;

    jack_transport_state_t m_state;

    int m_sync;

    AUD_syncFunction m_syncFunc;

    void* m_syncFuncData;

    pthread_t m_mixingThread;

    pthread_mutex_t m_mixingLock;

    pthread_cond_t m_mixingCondition;

    static void* runMixingThread(void* device);

    void updateRingBuffers();

    // hide copy constructor and operator=
    AUD_JackDevice(const AUD_JackDevice&);
    AUD_JackDevice& operator=(const AUD_JackDevice&);

protected:
    virtual void playing(bool playing);

public:
    AUD_JackDevice(std::string name, AUD_DeviceSpecs specs, int buffersize = AUD_DEFAULT_BUFFER_SIZE);

    virtual ~AUD_JackDevice();

    void startPlayback();

    void stopPlayback();

    void seekPlayback(float time);

    void setSyncCallback(AUD_syncFunction sync, void* data);

    float getPlaybackPosition();

    bool doesPlayback();
};

#endif //AUD_JACKDEVICE