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Version 4.2.1

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This commit is contained in:
Gary Scavone
2009-03-24 23:02:14 -04:00
committed by Stephen Sinclair
parent a6381b9d38
commit 2cbce2d8bd
275 changed files with 8949 additions and 6906 deletions
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139
src/Drummer.cpp
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@@ -3,7 +3,7 @@
\brief STK drum sample player class.
This class implements a drum sampling
synthesizer using WvIn objects and one-pole
synthesizer using FileWvIn objects and one-pole
filters. The drum rawwave files are sampled
at 22050 Hz, but will be appropriately
interpolated for other sample rates. You can
@@ -11,12 +11,12 @@
of simultaneous voices) via a #define in the
Drummer.h.
by Perry R. Cook and Gary P. Scavone, 1995 - 2004.
by Perry R. Cook and Gary P. Scavone, 1995 - 2005.
*/
/***************************************************/
#include "Drummer.h"
#include <math.h>
#include <cmath>
// Not really General MIDI yet.
unsigned char genMIDIMap[128] =
@@ -55,20 +55,14 @@ char waveNames[DRUM_NUMWAVES][16] =
Drummer :: Drummer() : Instrmnt()
{
for ( int i=0; i<DRUM_POLYPHONY; i++ ) {
filters_[i] = new OnePole;
sounding_[i] = -1;
}
// This counts the number of sounding voices.
nSounding_ = 0;
soundOrder_ = std::vector<int> (DRUM_POLYPHONY, -1);
soundNumber_ = std::vector<int> (DRUM_POLYPHONY, -1);
}
Drummer :: ~Drummer()
{
int i;
for ( i=0; i<nSounding_; i++ ) delete waves_[i];
for ( i=0; i<DRUM_POLYPHONY; i++ ) delete filters_[i];
}
void Drummer :: noteOn(StkFloat instrument, StkFloat amplitude)
@@ -91,97 +85,86 @@ void Drummer :: noteOn(StkFloat instrument, StkFloat amplitude)
}
// Yes, this is tres kludgey.
int noteNum = (int) ( ( 12*log(instrument/220.0)/log(2.0) ) + 57.01 );
int noteNumber = (int) ( ( 12 * log( instrument / 220.0 ) / log( 2.0 ) ) + 57.01 );
// Check first to see if there's already one like this sounding.
int i, waveIndex = -1;
for ( i=0; i<DRUM_POLYPHONY; i++ ) {
if (sounding_[i] == noteNum) waveIndex = i;
}
if ( waveIndex >= 0 ) {
// Reset this sound.
waves_[waveIndex]->reset();
filters_[waveIndex]->setPole( 0.999 - (gain * 0.6) );
filters_[waveIndex]->setGain( gain );
}
else {
if (nSounding_ == DRUM_POLYPHONY) {
// If we're already at maximum polyphony, then preempt the oldest voice.
delete waves_[0];
filters_[0]->clear();
OnePole *tempFilt = filters_[0];
// Re-order the list.
for ( i=0; i<DRUM_POLYPHONY-1; i++ ) {
waves_[i] = waves_[i+1];
filters_[i] = filters_[i+1];
// If we already have a wave of this note number loaded, just reset
// it. Otherwise, look first for an unused wave or preempt the
// oldest if already at maximum polyphony.
int iWave;
for ( iWave=0; iWave<DRUM_POLYPHONY; iWave++ ) {
if ( soundNumber_[iWave] == noteNumber ) {
if ( waves_[iWave].isFinished() ) {
soundOrder_[iWave] = nSounding_;
nSounding_++;
}
waves_[DRUM_POLYPHONY-1] = 0;
filters_[DRUM_POLYPHONY-1] = tempFilt;
waves_[iWave].reset();
filters_[iWave].setPole( 0.999 - (gain * 0.6) );
filters_[iWave].setGain( gain );
break;
}
else
nSounding_ += 1;
}
if ( iWave == DRUM_POLYPHONY ) { // This note number is not currently loaded.
if ( nSounding_ < DRUM_POLYPHONY ) {
for ( iWave=0; iWave<DRUM_POLYPHONY; iWave++ )
if ( soundOrder_[iWave] < 0 ) break;
nSounding_ += 1;
}
else {
for ( iWave=0; iWave<DRUM_POLYPHONY; iWave++ )
if ( soundOrder_[iWave] == 0 ) break;
// Re-order the list.
for ( int j=0; j<DRUM_POLYPHONY; j++ ) {
if ( soundOrder_[j] > soundOrder_[iWave] )
soundOrder_[j] -= 1;
}
}
soundOrder_[iWave] = nSounding_ - 1;
soundNumber_[iWave] = noteNumber;
sounding_[nSounding_-1] = noteNum;
// Concatenate the STK rawwave path to the rawwave file
waves_[nSounding_-1] = new WvIn( (Stk::rawwavePath() + waveNames[genMIDIMap[noteNum]]).c_str(), true );
if (Stk::sampleRate() != 22050.0)
waves_[nSounding_-1]->setRate( 22050.0 / Stk::sampleRate() );
filters_[nSounding_-1]->setPole( 0.999 - (gain * 0.6) );
filters_[nSounding_-1]->setGain( gain );
waves_[iWave].openFile( (Stk::rawwavePath() + waveNames[ genMIDIMap[ noteNumber ] ]).c_str(), true );
if ( Stk::sampleRate() != 22050.0 )
waves_[iWave].setRate( 22050.0 / Stk::sampleRate() );
filters_[iWave].setPole( 0.999 - (gain * 0.6) );
filters_[iWave].setGain( gain );
}
#if defined(_STK_DEBUG_)
errorString_ << "Drummer::noteOn: number sounding = " << nSounding_ << '\n';
for (i=0; i<nSounding_; i++) errorString_ << sounding_[i] << " ";
for ( int i=0; i<nSounding_; i++ ) errorString_ << soundNumber_[i] << " ";
errorString_ << '\n';
handleError( StkError::DEBUG_WARNING );
#endif
}
void Drummer :: noteOff(StkFloat amplitude)
void Drummer :: noteOff( StkFloat amplitude )
{
// Set all sounding wave filter gains low.
int i = 0;
while ( i < nSounding_ ) filters_[i++]->setGain( amplitude * 0.01 );
while ( i < nSounding_ ) filters_[i++].setGain( amplitude * 0.01 );
}
StkFloat Drummer :: tick()
StkFloat Drummer :: computeSample()
{
OnePole *tempFilt;
int j, i = 0;
lastOutput_ = 0.0;
while (i < nSounding_) {
if ( waves_[i]->isFinished() ) {
delete waves_[i];
tempFilt = filters_[i];
// Re-order the list.
for ( j=i; j<nSounding_-1; j++ ) {
sounding_[j] = sounding_[j+1];
waves_[j] = waves_[j+1];
filters_[j] = filters_[j+1];
if ( nSounding_ == 0 ) return lastOutput_;
for ( int i=0; i<DRUM_POLYPHONY; i++ ) {
if ( soundOrder_[i] >= 0 ) {
if ( waves_[i].isFinished() ) {
// Re-order the list.
for ( int j=0; j<DRUM_POLYPHONY; j++ ) {
if ( soundOrder_[j] > soundOrder_[i] )
soundOrder_[j] -= 1;
}
soundOrder_[i] = -1;
nSounding_--;
}
filters_[j] = tempFilt;
filters_[j]->clear();
sounding_[j] = -1;
nSounding_ -= 1;
i -= 1;
else
lastOutput_ += filters_[i].tick( waves_[i].tick() );
}
else
lastOutput_ += filters_[i]->tick( waves_[i]->tick() );
i++;
}
return lastOutput_;
}
StkFloat *Drummer :: tick(StkFloat *vector, unsigned int vectorSize)
{
return Instrmnt::tick( vector, vectorSize );
}
StkFrames& Drummer :: tick( StkFrames& frames, unsigned int channel )
{
return Instrmnt::tick( frames, channel );
}