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Version 4.4.0
This commit is contained in:
Gary Scavone
committed by
Stephen Sinclair
Stephen Sinclair
parent
d199342e86
commit
eccd8c9981
169
src/Voicer.cpp
169
src/Voicer.cpp
@@ -2,54 +2,54 @@
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/*! \class Voicer
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\brief STK voice manager class.
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This class can be used to manage a group of
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STK instrument classes. Individual voices can
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be controlled via unique note tags.
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Instrument groups can be controlled by channel
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number.
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This class can be used to manage a group of STK instrument
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classes. Individual voices can be controlled via unique note
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tags. Instrument groups can be controlled by group number.
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A previously constructed STK instrument class
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is linked with a voice manager using the
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addInstrument() function. An optional channel
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number argument can be specified to the
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addInstrument() function as well (default
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channel = 0). The voice manager does not
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delete any instrument instances ... it is the
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responsibility of the user to allocate and
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deallocate all instruments.
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A previously constructed STK instrument class is linked with a
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voice manager using the addInstrument() function. An optional
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group number argument can be specified to the addInstrument()
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function as well (default group = 0). The voice manager does not
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delete any instrument instances ... it is the responsibility of
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the user to allocate and deallocate all instruments.
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The tick() function returns the mix of all
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sounding voices. Each noteOn returns a unique
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tag (credits to the NeXT MusicKit), so you can
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send control changes to specific voices within
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an ensemble. Alternately, control changes can
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be sent to all voices on a given channel.
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The tick() function returns the mix of all sounding voices. Each
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noteOn returns a unique tag (credits to the NeXT MusicKit), so you
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can send control changes to specific voices within an ensemble.
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Alternately, control changes can be sent to all voices in a given
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group.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2007.
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by Perry R. Cook and Gary P. Scavone, 1995 - 2009.
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*/
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/***************************************************/
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#include "Voicer.h"
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#include <stdlib.h>
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#include <math.h>
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#include <cmath>
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namespace stk {
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Voicer :: Voicer( StkFloat decayTime )
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{
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tags_ = 23456;
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muteTime_ = (int) ( decayTime * Stk::sampleRate() );
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lastFrame_.resize( 1, 1, 0.0 );
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}
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Voicer :: ~Voicer()
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{
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}
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void Voicer :: addInstrument( Instrmnt *instrument, int channel )
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void Voicer :: addInstrument( Instrmnt *instrument, int group )
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{
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Voicer::Voice voice;
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voice.instrument = instrument;
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voice.channel = channel;
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voice.group = group;
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voice.noteNumber = -1;
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voices_.push_back( voice );
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// Check output channels and resize lastFrame_ if necessary.
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if ( instrument->channelsOut() > lastFrame_.channels() ) {
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unsigned int startChannel = lastFrame_.channels();
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lastFrame_.resize( 1, instrument->channelsOut() );
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for ( unsigned int i=startChannel; i<lastFrame_.size(); i++ )
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lastFrame_[i] = 0.0;
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}
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}
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void Voicer :: removeInstrument( Instrmnt *instrument )
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@@ -63,23 +63,32 @@ void Voicer :: removeInstrument( Instrmnt *instrument )
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break;
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}
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if ( !found ) {
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if ( found ) {
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// Check output channels and resize lastFrame_ if necessary.
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unsigned int maxChannels = 1;
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for ( i=voices_.begin(); i!=voices_.end(); ++i ) {
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if ( (*i).instrument->channelsOut() > maxChannels ) maxChannels = (*i).instrument->channelsOut();
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}
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if ( maxChannels < lastFrame_.channels() )
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lastFrame_.resize( 1, maxChannels );
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}
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else {
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errorString_ << "Voicer::removeInstrument: instrument pointer not found in current voices!";
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handleError( StkError::WARNING );
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}
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}
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long Voicer :: noteOn(StkFloat noteNumber, StkFloat amplitude, int channel )
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long Voicer :: noteOn(StkFloat noteNumber, StkFloat amplitude, int group )
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{
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unsigned int i;
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StkFloat frequency = (StkFloat) 220.0 * pow( 2.0, (noteNumber - 57.0) / 12.0 );
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for ( i=0; i<voices_.size(); i++ ) {
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if (voices_[i].noteNumber < 0 && voices_[i].channel == channel) {
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voices_[i].tag = tags_++;
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voices_[i].channel = channel;
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if (voices_[i].noteNumber < 0 && voices_[i].group == group) {
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voices_[i].tag = tags_++;
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voices_[i].group = group;
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voices_[i].noteNumber = noteNumber;
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voices_[i].frequency = frequency;
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voices_[i].instrument->noteOn( frequency, amplitude * ONE_OVER_128 );
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voices_[i].instrument->noteOn( frequency, amplitude * ONE_OVER_128 );
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voices_[i].sounding = 1;
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return voices_[i].tag;
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}
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@@ -88,7 +97,7 @@ long Voicer :: noteOn(StkFloat noteNumber, StkFloat amplitude, int channel )
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// All voices are sounding, so interrupt the oldest voice.
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int voice = -1;
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for ( i=0; i<voices_.size(); i++ ) {
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if ( voices_[i].channel == channel ) {
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if ( voices_[i].group == group ) {
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if ( voice == -1 ) voice = i;
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else if ( voices_[i].tag < voices_[voice].tag ) voice = (int) i;
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}
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@@ -96,7 +105,7 @@ long Voicer :: noteOn(StkFloat noteNumber, StkFloat amplitude, int channel )
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if ( voice >= 0 ) {
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voices_[voice].tag = tags_++;
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voices_[voice].channel = channel;
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voices_[voice].group = group;
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voices_[voice].noteNumber = noteNumber;
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voices_[voice].frequency = frequency;
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voices_[voice].instrument->noteOn( frequency, amplitude * ONE_OVER_128 );
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@@ -107,10 +116,10 @@ long Voicer :: noteOn(StkFloat noteNumber, StkFloat amplitude, int channel )
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return -1;
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}
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void Voicer :: noteOff( StkFloat noteNumber, StkFloat amplitude, int channel )
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void Voicer :: noteOff( StkFloat noteNumber, StkFloat amplitude, int group )
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{
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for ( unsigned int i=0; i<voices_.size(); i++ ) {
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if ( voices_[i].noteNumber == noteNumber && voices_[i].channel == channel ) {
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if ( voices_[i].noteNumber == noteNumber && voices_[i].group == group ) {
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voices_[i].instrument->noteOff( amplitude * ONE_OVER_128 );
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voices_[i].sounding = -muteTime_;
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}
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@@ -128,11 +137,11 @@ void Voicer :: noteOff( long tag, StkFloat amplitude )
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}
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}
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void Voicer :: setFrequency( StkFloat noteNumber, int channel )
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void Voicer :: setFrequency( StkFloat noteNumber, int group )
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{
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StkFloat frequency = (StkFloat) 220.0 * pow( 2.0, (noteNumber - 57.0) / 12.0 );
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for ( unsigned int i=0; i<voices_.size(); i++ ) {
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if ( voices_[i].channel == channel ) {
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if ( voices_[i].group == group ) {
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voices_[i].noteNumber = noteNumber;
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voices_[i].frequency = frequency;
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voices_[i].instrument->setFrequency( frequency );
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@@ -153,7 +162,7 @@ void Voicer :: setFrequency( long tag, StkFloat noteNumber )
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}
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}
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void Voicer :: pitchBend( StkFloat value, int channel )
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void Voicer :: pitchBend( StkFloat value, int group )
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{
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StkFloat pitchScaler;
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if ( value < 64.0 )
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@@ -161,7 +170,7 @@ void Voicer :: pitchBend( StkFloat value, int channel )
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else
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pitchScaler = pow(2.0, (value-64.0)/64.0);
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for ( unsigned int i=0; i<voices_.size(); i++ ) {
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if ( voices_[i].channel == channel )
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if ( voices_[i].group == group )
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voices_[i].instrument->setFrequency( (StkFloat) (voices_[i].frequency * pitchScaler) );
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}
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}
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@@ -181,10 +190,10 @@ void Voicer :: pitchBend( long tag, StkFloat value )
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}
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}
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void Voicer :: controlChange( int number, StkFloat value, int channel )
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void Voicer :: controlChange( int number, StkFloat value, int group )
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{
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for ( unsigned int i=0; i<voices_.size(); i++ ) {
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if ( voices_[i].channel == channel )
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if ( voices_[i].group == group )
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voices_[i].instrument->controlChange( number, value );
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}
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}
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@@ -207,72 +216,4 @@ void Voicer :: silence( void )
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}
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}
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StkFloat Voicer :: tick()
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{
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lastOutput_ = lastOutputLeft_ = lastOutputRight_ = 0.0;
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for ( unsigned int i=0; i<voices_.size(); i++ ) {
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if ( voices_[i].sounding != 0 ) {
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lastOutput_ += voices_[i].instrument->tick();
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lastOutputLeft_ += voices_[i].instrument->lastOutLeft();
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lastOutputRight_ += voices_[i].instrument->lastOutRight();
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}
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if ( voices_[i].sounding < 0 ) {
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voices_[i].sounding++;
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if ( voices_[i].sounding == 0 )
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voices_[i].noteNumber = -1;
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}
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}
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return lastOutput_ / voices_.size();
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}
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StkFloat *Voicer :: tick(StkFloat *vector, unsigned int vectorSize)
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{
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for (unsigned int i=0; i<vectorSize; i++)
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vector[i] = tick();
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return vector;
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}
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StkFrames& Voicer :: tick( StkFrames& frames, unsigned int channel )
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{
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if ( channel == 0 || frames.channels() < channel ) {
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errorString_ << "Voicer::tick(): channel argument (" << channel << ") is zero or > channels in StkFrames argument!";
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handleError( StkError::FUNCTION_ARGUMENT );
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}
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if ( frames.channels() == 1 ) {
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for ( unsigned int i=0; i<frames.frames(); i++ )
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frames[i] = tick();
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}
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else if ( frames.interleaved() ) {
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unsigned int hop = frames.channels();
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unsigned int index = channel - 1;
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for ( unsigned int i=0; i<frames.frames(); i++ ) {
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frames[index] = tick();
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index += hop;
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}
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}
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else {
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unsigned int iStart = (channel - 1) * frames.frames();
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for ( unsigned int i=0; i<frames.frames(); i++ )
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frames[iStart + i] = tick();
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}
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return frames;
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}
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StkFloat Voicer :: lastOut() const
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{
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return lastOutput_;
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}
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StkFloat Voicer :: lastOutLeft() const
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{
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return lastOutputLeft_;
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}
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StkFloat Voicer :: lastOutRight() const
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{
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return lastOutputRight_;
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}
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} // stk namespace
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