PANetworkPlayer.hxx

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/*
 * Copyright (c) 2001-2007 MUSIC TECHNOLOGY GROUP (MTG)
 *                         UNIVERSITAT POMPEU FABRA
 *
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */


#ifndef _PORTAUDIO_NETWORK_PLAYER_HXX_
#define _PORTAUDIO_NETWORK_PLAYER_HXX_

#include <iostream>
#include <string>
#include "NetworkPlayer.hxx"
#include <portaudio.h>

namespace CLAM
{

class PANetworkPlayer : public NetworkPlayer
{
        int mPreferredBufferSize;
        int mSamplingRate;

        PaStream * mPortAudioStream;
        PaError mError;
        std::string mErrorMessage;
        bool mNeedsPriority;

public:
        //When created in the prototyper
        PANetworkPlayer(const std::string & networkFile);
        //When created in neteditor
        PANetworkPlayer();
        virtual ~PANetworkPlayer();

        // base class (virtual) interface:
        bool IsWorking();
        std::string NonWorkingReason();
        virtual bool IsRealTime() const { return true; }
        virtual void Start();
        virtual void Stop();

private:
        static int ProcessCallback (
                        const void *inputBuffers,
                        void *outputBuffers,
                        unsigned long framesPerBuffer,
                        const PaStreamCallbackTimeInfo* timeInfo,
                        PaStreamCallbackFlags statusFlags,
                        void *userData);
        inline bool CheckPaError(PaError result);
        //Buffer copying methods
        void Do(const void *inputBuffers, void *outputBuffers, unsigned long framesPerBuffer);
        void DoInPorts(float** input, unsigned long nframes);
        void DoOutPorts(float** output, unsigned long nframes);
        void MuteOutBuffers(float** output, unsigned long nframes);
};

} //end namespace CLAM

#endif