// Runs update logic
void KissFileSampleApp::update()
{
// Check if track is playing and has a PCM buffer available
if (mTrack->isPlaying() && mTrack->isPcmBuffering())
{
// Get buffer
mBuffer = mTrack->getPcmBuffer();
if (mBuffer && mBuffer->getInterleavedData())
{
// Get sample count
uint32_t mSampleCount = mBuffer->getInterleavedData()->mSampleCount;
if (mSampleCount > 0)
{
// Initialize analyzer, if needed
if (!mFftInit)
{
mFftInit = true;
mFft.setDataSize(mSampleCount);
}
// Analyze data
if (mBuffer->getInterleavedData()->mData != 0)
mFft.setData(mBuffer->getInterleavedData()->mData);
}
}
}
}
//*************************************************************************
void BeatDetectorApp::update()
{
if(write_frames)
{
if(curr_sample < p_sample->m_SampleCount)
{
// Initialize analyzer, if needed
if (!mFftInit)
{
Init(samples_per_frame);
}
mFft.setData(p_sample->mp_Buffer + (curr_sample));
curr_sample += samples_per_frame;
CSoundAnalyzer::Get().ProcessData(mFft.getAmplitude(), mFft.getData());
}
else
{
shutdown();
}
}
else
{
// Check if track is playing and has a PCM buffer available
if (mTrack->isPlaying() && mTrack->isPcmBuffering())
{
// Get buffer
mBuffer = mTrack->getPcmBuffer();
if (mBuffer && mBuffer->getInterleavedData())
{
// Get sample count
uint32_t mSampleCount = mBuffer->getChannelData(CHANNEL_FRONT_LEFT)->mSampleCount;
if (mSampleCount > 0)
{
// Initialize analyzer, if needed
if (!mFftInit)
{
Init(samples_per_frame);
}
// Analyze data
if (mBuffer->getChannelData(CHANNEL_FRONT_LEFT)->mData != 0)
mFft.setData(mBuffer->getChannelData(CHANNEL_FRONT_LEFT)->mData);
CSoundAnalyzer::Get().ProcessData(mFft.getAmplitude(), mFft.getData());
}
}
}
}
}
void RoboticaProjectApp::update()
{
//get the latest pcm buffer from the track
mPcmBuffer = mTrack->getPcmBuffer();
if( mPcmBuffer ){
// mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT )
fftRef = audio::calculateFft( mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT ), bandCount );
if(mAddParticle){
particleC->addParticle(mAddPos);
mAddParticle = false;
}
particleC->update(fftRef, bandCount, getElapsedSeconds());
}
}
void AudioAnalysisSampleApp::drawWaveForm( audio::TrackRef track )
{
audio::PcmBuffer32fRef aPcmBuffer = track->getPcmBuffer();
if( ! aPcmBuffer ) {
return;
}
uint32_t bufferSamples = aPcmBuffer->getSampleCount();
audio::Buffer32fRef leftBuffer = aPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT );
audio::Buffer32fRef rightBuffer = aPcmBuffer->getChannelData( audio::CHANNEL_FRONT_RIGHT );
int displaySize = getWindowWidth();
int endIdx = bufferSamples;
float scale = displaySize / (float)endIdx;
glColor3f( 1.0f, 0.5f, 0.25f );
glBegin( GL_LINE_STRIP );
for( int i = 0; i < endIdx; i++ ) {
float y = ( ( leftBuffer->mData[i] - 1 ) * - 100 );
glVertex2f( ( i * scale ) , y );
}
glEnd();
glColor3f( 1.0f, 0.96f, 0.0f );
glBegin( GL_LINE_STRIP );
for( int i = 0; i < endIdx; i++ ) {
float y = ( ( rightBuffer->mData[i] - 1 ) * - 100 );
glVertex2f( ( i * scale ) , y );
}
glEnd();
}
void AudioAnalysisSampleApp::drawFft( audio::TrackRef track )
{
float ht = (float)getWindowHeight();
float dutyCycle = 0.8;
float barWidth = (float)getWindowWidth()/(float)kBandCount;
audio::PcmBuffer32fRef aPcmBuffer = track->getPcmBuffer();
if( ! aPcmBuffer ) {
return;
}
boost::shared_ptr<float> fftRef = audio::calculateFft( aPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT ), kBandCount );
if( ! fftRef ) {
return;
}
float * fftBuffer = fftRef.get();
welch->addFft(fftBuffer);
float * fftDisplayBuffer = welch->getFft();
// float *fftDisplayBuffer = fftRef.get();
for( int i = 0; i < ( kBandCount ); i++ ) {
float barY = 10.0f*kFFTHistory*fftDisplayBuffer[i] / kBandCount * ht;
glBegin( GL_QUADS );
glColor3f( 255.0f, 255.0f, 0.0f );
glVertex2f( i * barWidth, ht );
glVertex2f( i * barWidth + barWidth*dutyCycle, ht );
glColor3f( 0.0f, 255.0f, 0.0f );
glVertex2f( i * barWidth + barWidth*dutyCycle, ht - barY );
glVertex2f( i * barWidth, ht - barY );
glEnd();
}
}
void SoundScapingApp::update() {
//get the latest pcm buffer from the track
mPcmBuffer = mTrack->getPcmBuffer();
}
