void DeviceTestApp::setupNoise()
{
mGen = audio::master()->makeNode( new audio::GenNoiseNode() );
mGen->connect( mGain );
mGen->enable();
}
void DeviceTestApp::setupSine()
{
mGen = audio::master()->makeNode( new audio::GenSineNode() );
mGen->setFreq( 440 );
mGen->connect( mGain );
mGen->enable();
}
void SpectralTestApp::setup()
{
mSpectroMargin = 40.0f;
auto ctx = audio::master();
auto format = audio::MonitorSpectralNode::Format().fftSize( FFT_SIZE ).windowSize( WINDOW_SIZE ).windowType( WINDOW_TYPE );
mMonitorSpectralNode = ctx->makeNode( new audio::MonitorSpectralNode( format ) );
mMonitorSpectralNode->setAutoEnabled();
//mGen = ctx->makeNode( new audio::GenSineNode() );
mGen = ctx->makeNode( new audio::GenTriangleNode() );
mGen->setFreq( 440.0f );
mSourceFile = audio::load( loadResource( RES_TONE440L220R_MP3 ), ctx->getSampleRate() );
auto audioBuffer = mSourceFile->loadBuffer();
CI_LOG_V( "loaded source buffer, frames: " << audioBuffer->getNumFrames() );
mPlayerNode = ctx->makeNode( new audio::BufferPlayerNode( audioBuffer ) );
setupSine();
setupUI();
ctx->enable();
mEnableGraphButton.setEnabled( true );
mScaleDecibelsButton.setEnabled( mSpectrumPlot.getScaleDecibels() );
PRINT_GRAPH( ctx );
CI_LOG_V( "MonitorSpectralNode fftSize: " << mMonitorSpectralNode->getFftSize() << ", windowSize: " << mMonitorSpectralNode->getWindowSize() );
}
void ParamTestApp::setup()
{
auto ctx = audio::master();
mGain = ctx->makeNode( new audio::GainNode() );
mGain->setValue( 0.8f );
mPan = ctx->makeNode( new audio::Pan2dNode() );
mGen = ctx->makeNode( new audio::GenSineNode() );
// mGen = ctx->makeNode( new audio::GenTriangleNode() );
// mGen = ctx->makeNode( new audio::GenPhasorNode() );
mGen = ctx->makeNode( new audio::GenPulseNode );
mGen->setFreq( 220 );
mLowPass = ctx->makeNode( new audio::FilterLowPassNode() );
setupBasic();
setupUI();
PRINT_GRAPH( ctx );
testApply();
// testApply2();
// connectProcessor();
}
void WebAudioApp::setup()
{
Context::setMaster( new ContextWebAudio, new DeviceManagerWebAudio );
auto ctx = audio::master();
mGen = ctx->makeNode( new audio::GenSineNode );
mGain = ctx->makeNode( new audio::GainNode );
mGen->setFreq( 220 );
mGain->setValue( 0.5f );
// connections can be made this way or with connect(). The master Context's getOutput() is the speakers by default.
mGen >> mGain >> ctx->getOutput();
mGen->enable();
ctx->enable();
}
void NodeAdvancedApp::update()
{
size_t seqPeriod = 10 * randInt( 1, 4 );
if( getElapsedFrames() % seqPeriod == 0 ) {
size_t index = randInt( mCPentatonicScale.size() );
size_t midiPitch = mCPentatonicScale.at( index );
mGen->getParamFreq()->applyRamp( audio::midiToFreq( midiPitch ), mFreqRampTime );
}
}
void NodeBasic::setup()
{
// You use the audio::Context to make new audio::Node instances (audio::master() is the speaker-facing Context).
auto ctx = audio::master();
mGen = ctx->makeNode( new audio::GenSineNode );
mGain = ctx->makeNode( new audio::GainNode );
mGen->setFreq( 220 );
mGain->setValue( 0.5f );
// connections can be made this way or with connect(). The master Context's getOutput() is the speakers by default.
mGen >> mGain >> ctx->getOutput();
// Node's need to be enabled to process audio. EffectNode's are enabled by default, while NodeSource's (like Gen) need to be switched on.
mGen->enable();
// Context also must be started. Starting and stopping this controls the entire DSP graph.
ctx->enable();
}
void DeviceTestApp::setupSendStereo()
{
auto ctx = audio::master();
ctx->disconnectAllNodes();
auto router = ctx->makeNode( new audio::ChannelRouterNode( audio::Node::Format().channels( mOutputDeviceNode->getNumChannels() ) ) );
auto upmix = ctx->makeNode( new audio::Node( audio::Node::Format().channels( 2 ) ) );
int channelIndex = mSendChannelInput.getValue();
CI_LOG_V( "routing input to channel: " << channelIndex );
mGen >> upmix >> mGain >> router->route( 0, channelIndex );
router >> mMonitor >> ctx->getOutput();
mGen->enable();
}
void NodeSubclassingApp::setup()
{
auto ctx = audio::master();
// We create an audio graph that demonstrates the CustomTremeloNode bing used in combination with cinder-defined Node's.
mGenNode = ctx->makeNode( new audio::GenOscNode( audio::WaveformType::SQUARE, 220 ) );
mMonitorNode = ctx->makeNode( new audio::MonitorNode );
auto gain = ctx->makeNode( new audio::GainNode( 0.2f ) );
// Here we make our custom Node. For the sake of demonstration, its channel count is forced to stereo.
mCustomTremeloNode = ctx->makeNode( new CustomTremoloNode( audio::Node::Format().channels( 2 ) ) );
mGenNode >> mCustomTremeloNode >> mMonitorNode >> gain >> ctx->getOutput();
// Turn on the GenNode and fire up the Context.
mGenNode->enable();
ctx->enable();
console() << "\naudio graph:\n" << ctx->printGraphToString() << endl;
}
void NodeAdvancedApp::draw()
{
gl::clear();
// Draw the Scope's recorded Buffer in the upper right.
if( mMonitor && mMonitor->getNumConnectedInputs() ) {
Rectf scopeRect( getWindowWidth() - 210, 10, getWindowWidth() - 10, 110 );
drawAudioBuffer( mMonitor->getBuffer(), scopeRect, true );
}
// Visualize the Gen's current pitch with a circle.
float pitchMin = mCPentatonicScale.front();
float pitchMax = mCPentatonicScale.back();
float currentPitch = audio::freqToMidi( mGen->getFreq() ); // MIDI values do not have to be integers for us.
float percent = ( currentPitch - pitchMin ) / ( pitchMax - pitchMin );
float circleX = percent * getWindowWidth();
gl::color( 0, 0.8f, 0.8f );
gl::drawSolidCircle( vec2( circleX, getWindowCenter().y ), 50 );
}
void NodeBasic::mouseDrag( MouseEvent event )
{
mGen->setFreq( event.getPos().x );
mGain->setValue( 1.0f - (float)event.getPos().y / (float)getWindowHeight() );
}