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/*
 *  PaSnd.cpp
 *
 *  Created by Daisuke Nogami.
 *  Copyright 2005 Daisuke Nogami [null-null.net]. All rights reserved.
 */
 
#include "stdafx.h"
#include "PaSnd.h"
 
#define ISOURCES 2
#define OUTCHANNELS 1
#define SAMPLELATE 44100
#define PA_SAMPLE_TYPE paFloat32
#define LOFTBL 44100/2      // 0.5 sec
 
PaSnd::PaSnd(void){
}
 
PaSnd::~PaSnd(void){
}
 
int paCallback(
       void *inputBuffer,
       void *outputBuffer,
       unsigned long framesPerBuffer,
       PaTimestamp tms,
       void *userData
  ){
 
  paData *mdata=(paData*)userData;
  unsigned int frameIndex,chn;
  float *out = (float*)outputBuffer;
  
  for( frameIndex = 0; frameIndex < framesPerBuffer; frameIndex++ ){
    for( chn = 0; chn < OUTCHANNELS; chn++ ){
      if( chn == 0 ){
        *out++ = mdata->asunit.sigProc() + mdata->runit.sigProc() + mdata->rdunit.sigProc();
      }
      else{
      }
    }
  }
 
  return 0;
}
 
void PaSnd::init(){
 
  // initialize portaudio
 
  this->err=Pa_Initialize();
  
  if(this->err !=paNoError ){
    this->stop();
  }
  else{
    err=Pa_OpenStream(
      &this->stream,
      Pa_GetDefaultInputDeviceID(),//paNoDevice,
      ISOURCES,
      paFloat32,
      NULL,
      Pa_GetDefaultOutputDeviceID(),
      OUTCHANNELS,
      paFloat32,
      NULL,
      SAMPLELATE,//44100
      128,//256,//frames per buffer
      0,
      paClipOff,
      paCallback,
      &this->mdata
    );
  }
  printf("stream opend=%d\n",this->err);
 
  // initialize units
 
  mdata.asunit.load( "data/zaa.wav", 3*44100 );
  mdata.asunit.mVol = 1.0;
  mdata.runit.load( "data/shitoshito.wav", 5*44100 );
  mdata.runit.mVol = 0.0;
  mdata.rdunit.load( "data/potupotu.wav", 3*44100 );
  mdata.rdunit.mVol = 1.0;
}
 
void PaSnd::start(){
  this->err=Pa_StartStream(this->stream);
  printf("stream started=%d\n",this->err);
 
}
 
void PaSnd::stop(){
  Pa_StopStream(this->stream);
  printf("stream stoprd=%d\n",this->err);
}
 
void PaSnd::releace(){
  Pa_StopStream(this->stream);
  Pa_CloseStream(this->stream);
  Pa_Terminate();
}