jack2/common/JackAudioAdapterInterface.cpp

/*
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.

*/

#include "JackAudioAdapter.h"
#include <stdio.h>

namespace Jack
{

void MeasureTable::Write(int time1, int time2, float r1, float r2, int pos1, int pos2)
{
    int pos = (++fCount) % TABLE_MAX;
	fTable[pos].time1 = time1;
	fTable[pos].time2 = time2;
	fTable[pos].r1 = r1;
	fTable[pos].r2 = r2;
	fTable[pos].pos1 = pos1;
	fTable[pos].pos2 = pos2;
}
                
void MeasureTable::Save()
{
    char buffer[1024];
	FILE* file = fopen("JackAudioAdapter.log", "w");

    int MAX = (fCount) % TABLE_MAX - 1;
	for (int i = 1; i < MAX; i++) {
		fprintf(file, "%d \t %d \t %d  \t %f \t %f \t %d \t %d \n", 
		fTable[i].delta, fTable[i+1].time1 - fTable[i].time1, 
		fTable[i+1].time2 - fTable[i].time2, 
		fTable[i].r1, fTable[i].r2, fTable[i].pos1, fTable[i].pos2);
	}
    fclose(file);
    
    // Adapter timing 1
    file = fopen("AdapterTiming1.plot", "w");
    fprintf(file, "set multiplot\n");
    fprintf(file, "set grid\n");
    fprintf(file, "set title \"Audio adapter timing\"\n");
    fprintf(file, "set xlabel \"audio cycles\"\n");
    fprintf(file, "set ylabel \"usec\"\n");
    fprintf(file, "plot ");
    sprintf(buffer, "\"JackAudioAdapter.log\" using 2 title \"Consumer time\" with lines,");
    fprintf(file, buffer);
    sprintf(buffer, "\"JackAudioAdapter.log\" using 3 title \"Producer time\" with lines");
    fprintf(file, buffer);
    fclose(file);
    
    // Adapter timing 2 
    file = fopen("AdapterTiming2.plot", "w");
    fprintf(file, "set multiplot\n");
    fprintf(file, "set grid\n");
    fprintf(file, "set title \"Audio adapter timing\"\n");
    fprintf(file, "set xlabel \"audio cycles\"\n");
    fprintf(file, "set ylabel \"usec\"\n");
    fprintf(file, "plot ");
    sprintf(buffer, "\"JackAudioAdapter.log\" using 4 title \"Ratio 1\" with lines,");
    fprintf(file, buffer);
    sprintf(buffer, "\"JackAudioAdapter.log\" using 5 title \"Ratio 2\" with lines");
    fprintf(file, buffer);
    fclose(file);
    
    // Adapter timing 3
    file = fopen("AdapterTiming3.plot", "w");
    fprintf(file, "set multiplot\n");
    fprintf(file, "set grid\n");
    fprintf(file, "set title \"Audio adapter timing\"\n");
    fprintf(file, "set xlabel \"audio cycles\"\n");
    fprintf(file, "set ylabel \"usec\"\n");
    fprintf(file, "plot ");
    sprintf(buffer, "\"JackAudioAdapter.log\" using 6 title \"Position in consumer ringbuffer\" with lines,");
    fprintf(file, buffer);
    sprintf(buffer, "\"JackAudioAdapter.log\" using 7 title \"Position in producer ringbuffer\" with lines");
    fprintf(file, buffer);
    fclose(file);
}

void JackAudioAdapterInterface::ResetRingBuffers()
{
    int i;
        
    for (i = 0; i < fCaptureChannels; i++) {
        fCaptureRingBuffer[i]->Reset();
    }
    
    for (i = 0; i < fPlaybackChannels; i++) {
        fPlaybackRingBuffer[i]->Reset();
    }
}

void JackAudioAdapterInterface::ResampleFactor(jack_nframes_t& frame1, jack_nframes_t& frame2)
{
    jack_time_t time = jack_get_time();
    
    if (!fRunning) {
        // Init DLL
        fRunning = true;
        fProducerDLL.Init(time);
        fConsumerDLL.Init(time);
        frame1 = 1;
        frame2 = 1;
    } else {
        // DLL
        fProducerDLL.IncFrame(time);
        jack_nframes_t time1 = fConsumerDLL.Time2Frames(time);
        jack_nframes_t time2 = fProducerDLL.Time2Frames(time);
        frame1 = time1;
        frame2 = time2;
        jack_log("JackAudioAdapterInterface::ResampleFactor time1 = %ld time2 = %ld src_ratio_input = %f src_ratio_output = %f", 
            long(time1), long(time2), double(time1) / double(time2), double(time2) / double(time1));
    }
}

int JackAudioAdapterInterface::Open()
{
    return 0;
}

int JackAudioAdapterInterface::Close()
{
    return 0;
}
 
} // namespace