jack2/common/JackAudioAdapterInterface.h

/*
Copyright (C) 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 __JackAudioAdapterInterface__
#define __JackAudioAdapterInterface__

#include "JackResampler.h"
#include "JackFilters.h"
#include "JackConstants.h"
#include <stdio.h>

namespace Jack
{

#ifdef JACK_MONITOR

#define TABLE_MAX 100000

    struct Measure
    {
        int delta;
        int time1;
        int time2;
        float r1;
        float r2;
        int pos1;
        int pos2;
    };

    struct MeasureTable
    {

        Measure fTable[TABLE_MAX];
        int fCount;

        MeasureTable() :fCount ( 0 )
        {}

        void Write(int time1, int time2, float r1, float r2, int pos1, int pos2);
        void Save(unsigned int fHostBufferSize, unsigned int fHostSampleRate, unsigned int fAdaptedSampleRate, unsigned int fAdaptedBufferSize);

    };

#endif

    /*!
    \brief Base class for audio adapters.
    */

    class JackAudioAdapterInterface
    {

    protected:

#ifdef JACK_MONITOR
        MeasureTable fTable;
#endif
        //channels
        int fCaptureChannels;
        int fPlaybackChannels;

        //host parameters
        jack_nframes_t fHostBufferSize;
        jack_nframes_t fHostSampleRate;

        //adapted parameters
        jack_nframes_t fAdaptedBufferSize;
        jack_nframes_t fAdaptedSampleRate;

        //PI controler
        JackPIControler fPIControler;

        JackResampler** fCaptureRingBuffer;
        JackResampler** fPlaybackRingBuffer;
        
        unsigned int fQuality;
        unsigned int fRingbufferCurSize;
        jack_time_t fPullAndPushTime;
  
        bool fRunning;
        bool fAdaptative;
        
        void ResetRingBuffers();
        void AdaptRingBufferSize();
        void GrowRingBufferSize();
        
    public:

         JackAudioAdapterInterface ( jack_nframes_t buffer_size, jack_nframes_t sample_rate ):
            fCaptureChannels ( 0 ),
            fPlaybackChannels ( 0 ),
            fHostBufferSize ( buffer_size ),
            fHostSampleRate ( sample_rate ),
            fAdaptedBufferSize ( buffer_size),
            fAdaptedSampleRate ( sample_rate ),
            fPIControler(sample_rate / sample_rate, 256),
            fCaptureRingBuffer(NULL), fPlaybackRingBuffer(NULL),
            fQuality(0),
            fRingbufferCurSize(DEFAULT_ADAPTATIVE_SIZE),
            fPullAndPushTime(0),
            fRunning(false),
            fAdaptative(true)
        {}
        JackAudioAdapterInterface ( jack_nframes_t host_buffer_size, 
                                    jack_nframes_t host_sample_rate,
                                    jack_nframes_t adapted_buffer_size,
                                    jack_nframes_t adapted_sample_rate ) :
                fCaptureChannels ( 0 ),
                fPlaybackChannels ( 0 ),
                fHostBufferSize ( host_buffer_size ),
                fHostSampleRate ( host_sample_rate ),
                fAdaptedBufferSize ( adapted_buffer_size),
                fAdaptedSampleRate ( adapted_sample_rate ),
                fPIControler(host_sample_rate / host_sample_rate, 256),
                fQuality(0),
                fPullAndPushTime(0),
                fRunning ( false )
        {}

        virtual ~JackAudioAdapterInterface()
        {}

        virtual void Reset();
       
        virtual void Create();
        virtual void Destroy();
        
        virtual int Open()
        {
            return 0;
        }
        
        virtual int Close()
        {
            return 0;
        }

        virtual int SetHostBufferSize ( jack_nframes_t buffer_size )
        {
            fHostBufferSize = buffer_size;
            if (fAdaptative) 
                AdaptRingBufferSize();
            return 0;
        }

        virtual int SetAdaptedBufferSize ( jack_nframes_t buffer_size )
        {
            fAdaptedBufferSize = buffer_size;
            if (fAdaptative) 
                AdaptRingBufferSize();
            return 0;
        }

        virtual int SetBufferSize ( jack_nframes_t buffer_size )
        {
            SetHostBufferSize ( buffer_size );
            SetAdaptedBufferSize ( buffer_size );
            return 0;
        }

        virtual int SetHostSampleRate ( jack_nframes_t sample_rate )
        {
            fHostSampleRate = sample_rate;
            fPIControler.Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
            return 0;
        }

        virtual int SetAdaptedSampleRate ( jack_nframes_t sample_rate )
        {
            fAdaptedSampleRate = sample_rate;
            fPIControler.Init(double(fHostSampleRate) / double(fAdaptedSampleRate));
            return 0;
        }

        virtual int SetSampleRate ( jack_nframes_t sample_rate )
        {
            SetHostSampleRate ( sample_rate );
            SetAdaptedSampleRate ( sample_rate );
            return 0;
        }
      
        void SetInputs ( int inputs )
        {
            jack_log ( "JackAudioAdapterInterface::SetInputs %d", inputs );
            fCaptureChannels = inputs;
        }

        void SetOutputs ( int outputs )
        {
            jack_log ( "JackAudioAdapterInterface::SetOutputs %d", outputs );
            fPlaybackChannels = outputs;
        }

        int GetInputs()
        {
            jack_log ( "JackAudioAdapterInterface::GetInputs %d", fCaptureChannels );
            return fCaptureChannels;
        }

        int GetOutputs()
        {
            jack_log ( "JackAudioAdapterInterface::GetOutputs %d", fPlaybackChannels );
            return fPlaybackChannels;
        }
        
        int PushAndPull(float** inputBuffer, float** outputBuffer, unsigned int frames);
        int PullAndPush(float** inputBuffer, float** outputBuffer, unsigned int frames);
  
    };

}

#endif