PAAudioStream.hxx

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/*
 * Copyright (c) 2004 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 __PAAUDIOSTREAM__
#define __PAAUDIOSTREAM__

#include <portaudio.h>
#include "PortAudioUtils.hxx"
#include "DoubleBuffer.hxx"

namespace CLAM
{

class PAAudioStreamConfig
{
public:

        PAAudioStreamConfig()
                : mSampleRate( 44100 ), mNChannels(2), 
                  mCallback( NULL )
        {
        }

        ~PAAudioStreamConfig()
        {
        }

        inline void SetSampleRate( unsigned srate )
        {
                mSampleRate = srate;
        }

        inline unsigned GetSampleRate() const
        {
                return mSampleRate;
        }

        inline void SetChannelNumber( unsigned char nchann )
        {
                mNChannels = nchann;
        }

        inline unsigned char GetChannelNumber() const
        {
                return mNChannels;
        }

        inline void SetCallback( PortAudioCallback  cb )
        {
                mCallback = cb;
        }

        inline PortAudioCallback GetCallback( ) const
        {
                return mCallback;
        }

        inline void SetInputDblBuffer( DoubleBuffer* buffer )
        {
                mBuffer.mInputDblBuff = buffer;
        }

        inline DoubleBuffer* GetInputDblBuffer()
        {
                return mBuffer.mInputDblBuff;
        }

        inline void SetOutputDblBuffer( DoubleBuffer* buffer )
        {
                mBuffer.mOutputDblBuff = buffer;
        }

        inline DoubleBuffer* GetOutputDblBuffer()
        {
                return mBuffer.mOutputDblBuff;
        }

        inline FullDuplexDoubleBuffer* GetDblBuffer()
        {
                return &mBuffer;
        }

        inline void SetDeviceID( PaDeviceIndex devID )
        {
                mDevID = devID;
        }

        inline PaDeviceIndex GetDeviceID( ) const
        {
                return mDevID;
        }

private:
        
        unsigned                 mSampleRate;
        unsigned char            mNChannels;
        PaDeviceIndex               mDevID;
        PortAudioCallback        mCallback;
        FullDuplexDoubleBuffer   mBuffer;

};

class PAAudioStream
{
public:

        PAAudioStream( PAAudioStreamConfig& );

        void Start();

        void Stop();

        ~PAAudioStream();

protected:

        virtual void SetupStream() = 0;

        
        PAAudioStreamConfig  mConfig;
        PaStream*     mStream;
};

}

#endif

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