AUD_JackDevice.h

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/*
 * $Id: AUD_JackDevice.h 35141 2011-02-25 10:21:56Z jesterking $
 *
 * ***** 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>

#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