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https://github.com/thestk/stk
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Version 4.2.1
This commit is contained in:
Gary Scavone
committed by
Stephen Sinclair
Stephen Sinclair
parent
a6381b9d38
commit
2cbce2d8bd
@@ -2,39 +2,49 @@
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/*! \class Tabla
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\brief STK tabla drum class.
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This class implements a drum sampling
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synthesizer using WvIn objects and one-pole
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filters. The drum rawwave files are sampled
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at 22050 Hz, but will be appropriately
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interpolated for other sample rates. You can
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specify the maximum polyphony (maximum number
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of simultaneous voices) in Drummer.h.
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This class implements a drum sampling synthesizer using FileWvIn
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objects and one-pole filters. The drum rawwave files are sampled
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at 22050 Hz, but will be appropriately interpolated for other
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sample rates. You can specify the maximum polyphony (maximum
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number of simultaneous voices) in Tabla.h.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2004.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2005.
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*/
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/***************************************************/
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#include "Tabla.h"
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#include <math.h>
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#include <cmath>
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Tabla :: Tabla() : Instrmnt()
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{
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for ( int i=0; i<TABLA_POLYPHONY; i++ ) {
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filters_[i] = new OnePole;
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sounding_[i] = -1;
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}
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// This counts the number of sounding voices.
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nSounding_ = 0;
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soundOrder_ = std::vector<int> (TABLA_POLYPHONY, -1);
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soundNumber_ = std::vector<int> (TABLA_POLYPHONY, -1);
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}
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Tabla :: ~Tabla()
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{
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int i;
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for ( i=0; i<nSounding_; i++ ) delete waves_[i];
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for ( i=0; i<TABLA_POLYPHONY; i++ ) delete filters_[i];
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}
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static char tablaWaves[TABLA_NUMWAVES][16] =
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{ "Drdak2.raw",
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"Drdak3.raw",
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"Drdak4.raw",
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"Drddak1.raw",
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"Drdee1.raw",
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"Drdee2.raw",
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"Drdoo1.raw",
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"Drdoo2.raw",
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"Drdoo3.raw",
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"Drjun1.raw",
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"Drjun2.raw",
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"DrDoi1.raw",
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"DrDoi2.raw",
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"DrTak1.raw",
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"DrTak2.raw"
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};
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void Tabla :: noteOn(StkFloat instrument, StkFloat amplitude)
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{
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#if defined(_STK_DEBUG_)
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@@ -54,68 +64,54 @@ void Tabla :: noteOn(StkFloat instrument, StkFloat amplitude)
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return;
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}
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static char tablaWaves[TABLA_NUMWAVES][16] =
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{ "Drdak2.raw",
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"Drdak3.raw",
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"Drdak4.raw",
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"Drddak1.raw",
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"Drdee1.raw",
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"Drdee2.raw",
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"Drdoo1.raw",
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"Drdoo2.raw",
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"Drdoo3.raw",
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"Drjun1.raw",
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"Drjun2.raw",
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"DrDoi1.raw",
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"DrDoi2.raw",
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"DrTak1.raw",
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"DrTak2.raw"
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};
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int noteNumber = ( (int) instrument ) % 16;
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int noteNum = ( (int) instrument ) % 16;
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// Check first to see if there's already one like this sounding.
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int i, waveIndex = -1;
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for ( i=0; i<TABLA_POLYPHONY; i++ ) {
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if ( sounding_[i] == noteNum ) waveIndex = i;
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}
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if ( waveIndex >= 0 ) {
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// Reset this sound.
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waves_[waveIndex]->reset();
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filters_[waveIndex]->setPole( 0.999 - (gain * 0.6) );
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filters_[waveIndex]->setGain( gain );
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}
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else {
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if ( nSounding_ == TABLA_POLYPHONY ) {
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// If we're already at maximum polyphony, then preempt the oldest voice.
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delete waves_[0];
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filters_[0]->clear();
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OnePole *tempFilt = filters_[0];
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// Re-order the list.
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for ( i=0; i<TABLA_POLYPHONY-1; i++ ) {
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waves_[i] = waves_[i+1];
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filters_[i] = filters_[i+1];
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// If we already have a wave of this note number loaded, just reset
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// it. Otherwise, look first for an unused wave or preempt the
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// oldest if already at maximum polyphony.
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int iWave;
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for ( iWave=0; iWave<TABLA_POLYPHONY; iWave++ ) {
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if ( soundNumber_[iWave] == noteNumber ) {
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if ( waves_[iWave].isFinished() ) {
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soundOrder_[iWave] = nSounding_;
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nSounding_++;
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}
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waves_[TABLA_POLYPHONY-1] = 0;
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filters_[TABLA_POLYPHONY-1] = tempFilt;
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waves_[iWave].reset();
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filters_[iWave].setPole( 0.999 - (gain * 0.6) );
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filters_[iWave].setGain( gain );
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break;
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}
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else
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nSounding_ += 1;
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}
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sounding_[nSounding_-1] = noteNum;
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// Concatenate the rawwave path to the file name.
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waves_[nSounding_-1] = new WvIn( (std::string("rawwaves/") + tablaWaves[noteNum]).c_str(), true );
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waves_[nSounding_-1]->normalize(0.4);
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if ( iWave == TABLA_POLYPHONY ) { // This note number is not currently loaded.
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if ( nSounding_ < TABLA_POLYPHONY ) {
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for ( iWave=0; iWave<TABLA_POLYPHONY; iWave++ )
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if ( soundOrder_[iWave] < 0 ) break;
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nSounding_ += 1;
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}
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else {
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for ( iWave=0; iWave<TABLA_POLYPHONY; iWave++ )
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if ( soundOrder_[iWave] == 0 ) break;
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// Re-order the list.
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for ( int j=0; j<TABLA_POLYPHONY; j++ ) {
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if ( soundOrder_[j] > soundOrder_[iWave] )
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soundOrder_[j] -= 1;
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}
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}
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soundOrder_[iWave] = nSounding_ - 1;
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soundNumber_[iWave] = noteNumber;
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// Concatenate the rawwave path to the rawwave file
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waves_[iWave].openFile( (std::string("rawwaves/") + tablaWaves[ noteNumber ]).c_str(), true );
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if ( Stk::sampleRate() != 22050.0 )
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waves_[nSounding_-1]->setRate( 22050.0 / Stk::sampleRate() );
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filters_[nSounding_-1]->setPole( 0.999 - (gain * 0.6) );
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filters_[nSounding_-1]->setGain( gain );
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waves_[iWave].setRate( 22050.0 / Stk::sampleRate() );
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filters_[iWave].setPole( 0.999 - (gain * 0.6) );
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filters_[iWave].setGain( gain );
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}
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#if defined(_STK_DEBUG_)
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errorString_ << "Tabla::noteOn: number sounding = " << nSounding_ << '\n';
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for (i=0; i<nSounding_; i++) errorString_ << sounding_[i] << " ";
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for (i=0; i<nSounding_; i++) errorString_ << soundNumber_[i] << " ";
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errorString_ << '\n';
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handleError( StkError::DEBUG_WARNING );
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#endif
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@@ -125,46 +121,30 @@ void Tabla :: noteOff(StkFloat amplitude)
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{
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// Set all sounding wave filter gains low.
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int i = 0;
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while ( i < nSounding_ )
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filters_[i++]->setGain( amplitude * 0.01 );
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while ( i < nSounding_ ) filters_[i++].setGain( amplitude * 0.01 );
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}
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StkFloat Tabla :: tick()
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StkFloat Tabla :: computeSample()
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{
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OnePole *tempFilt;
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int j, i = 0;
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lastOutput_ = 0.0;
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while ( i < nSounding_ ) {
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if ( waves_[i]->isFinished() ) {
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delete waves_[i];
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tempFilt = filters_[i];
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// Re-order the list.
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for ( j=i; j<nSounding_-1; j++ ) {
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sounding_[j] = sounding_[j+1];
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waves_[j] = waves_[j+1];
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filters_[j] = filters_[j+1];
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if ( nSounding_ == 0 ) return lastOutput_;
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for ( int i=0; i<TABLA_POLYPHONY; i++ ) {
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if ( soundOrder_[i] >= 0 ) {
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if ( waves_[i].isFinished() ) {
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// Re-order the list.
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for ( int j=0; j<TABLA_POLYPHONY; j++ ) {
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if ( soundOrder_[j] > soundOrder_[i] )
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soundOrder_[j] -= 1;
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}
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soundOrder_[i] = -1;
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nSounding_--;
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}
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filters_[j] = tempFilt;
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filters_[j]->clear();
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sounding_[j] = -1;
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nSounding_ -= 1;
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i -= 1;
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else
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lastOutput_ += filters_[i].tick( waves_[i].tick() );
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}
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else
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lastOutput_ += filters_[i]->tick( waves_[i]->tick() );
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i++;
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}
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return lastOutput_;
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}
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StkFloat *Tabla :: tick(StkFloat *vector, unsigned int vectorSize)
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{
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return Instrmnt::tick( vector, vectorSize );
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}
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StkFrames& Tabla :: tick( StkFrames& frames, unsigned int channel )
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{
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return Instrmnt::tick( frames, channel );
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}
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