void svvimApp::getAlpha () {
// Sound buffer for FFT
mPcmBuffer = mInput.getPcmBuffer();
//
if (mPcmBuffer) {
mFftDataRef = audio::calculateFft(mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT ), 512);
}
uint16_t bandCount = 64;
if( ! mPcmBuffer )
return;
//use the most recent Pcm data to calculate t`he Fft
std::shared_ptr <float> fftRef = audio::calculateFft( mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT ), bandCount );
if( ! fftRef ) {
return;
}
float * fftBuffer = fftRef.get();
//mAlpha = max(2, mAlpha);
//draw the bands
for( int i = 0; i < ( bandCount/32 ); i++ ) {
mAlpha += fftBuffer[i] / bandCount / 4;
}
mAlpha /= 6.5;
}
void SoundScapingApp::drawWaveForm() {
//if the buffer is null, for example if this gets called before any PCM data has been buffered
//don't do anything
if( ! mPcmBuffer ) {
return;
}
uint32_t bufferLength = mPcmBuffer->getSampleCount();
audio::Buffer32fRef leftBuffer = mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT );
audio::Buffer32fRef rightBuffer = mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_RIGHT );
int displaySize = getWindowWidth();
float scale = displaySize / (float)bufferLength;
PolyLine<Vec2f> leftBufferLine;
PolyLine<Vec2f> rightBufferLine;
for( int i = 0; i < bufferLength; i++ ) {
float x = ( i * scale );
//get the PCM value from the left channel buffer
float y = ( ( leftBuffer->mData[i] - 1 ) * - 100 );
leftBufferLine.push_back( Vec2f( x , y) );
y = ( ( rightBuffer->mData[i] - 1 ) * - 100 );
rightBufferLine.push_back( Vec2f( x , y) );
}
gl::color( Color( 0.0f, 0.5f, 1.0f ) );
gl::draw( leftBufferLine );
gl::draw( rightBufferLine );
}
//*************************************************************************
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 shader02vertexApp::update() {
//--audio input
mPcmBuffer= mInput.getPcmBuffer();
if(mPcmBuffer) {
mBufferSize= mPcmBuffer->getSampleCount();
//std::cout<<"mBufferSize: "<<mBufferSize<<std::endl;
mBufferLeft= mPcmBuffer->getChannelData(audio::CHANNEL_FRONT_LEFT);
mFftLeft= audio::calculateFft(mPcmBuffer->getChannelData(audio::CHANNEL_FRONT_LEFT), mBufferSize/2);
mAmplitude= 0.0f;
for(uint32_t i= 0; i<mBufferSize; i++) {
mAmplitude += abs(mBufferLeft->mData[i]);
}
mAmplitude /= float(mBufferSize); //average amplitude
Surface32f mSurfaceSnd(mBufferSize, 1, true);
Surface32f::Iter sndIter(mSurfaceSnd.getIter());
uint32_t i= 0;
while(sndIter.line()) {
while(sndIter.pixel()) {
sndIter.r()= mBufferLeft->mData[i];
i++;
}
}
mTextureSnd= gl::Texture(mSurfaceSnd);
Surface32f mSurfaceFft(mBufferSize/2, 1, true);
Surface32f::Iter fftIter(mSurfaceFft.getIter());
uint32_t j= 0;
float *fftBuffer= mFftLeft.get();
while(fftIter.line()) {
while(fftIter.pixel()) {
fftIter.r()= fftBuffer[j];
j++;
}
}
mTextureFft= gl::Texture(mSurfaceFft);
}
//--shaders
if((fs::last_write_time(mPathFrag)>mTimeFrag) || (fs::last_write_time(mPathVert)>mTimeVert)) {
loadShader(); //hot-loading shader
}
}
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 TouchAudioTestApp::drawWaveForm()
{
if( ! mPcmBuffer ) {
return;
}
uint32_t bufferSamples = mPcmBuffer->getSampleCount();
audio::Buffer32fRef leftBuffer = mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT );
//audio::Buffer32fRef rightBuffer = mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_RIGHT );
float center = getWindowWidth() / 2;
float displaySize = getWindowHeight();
uint32_t endIdx = bufferSamples;
//only draw the last 1024 samples or less
int32_t startIdx = ( endIdx - 1024 );
startIdx = math<int32_t>::clamp( startIdx, 0, endIdx );
float scale = displaySize / (float)( endIdx - startIdx );
//float scale = displaySize / (float)( endIdx );
PolyLine<vec2> line;
gl::color( Color( 1.0f, 0.5f, 0.25f ) );
for( uint32_t i = startIdx, c = 0; i < endIdx; i++, c++ ) {
float y = ( ( leftBuffer->mData[i] - 1 ) * - center );
line.push_back( vec2( y, ( c * scale ) ) );
}
gl::draw( line );
/*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 redEyeApp::update() {
//--osc input
while(mListener.hasWaitingMessages()) {
osc::Message msg;
mListener.getNextMessage(&msg);
mOsc= msg.getAddress();
for(uint32_t i= 0; i<msg.getNumArgs(); i++) {
mOsc= mOsc+" "+msg.getArgAsString(i, true);
}
if(msg.getAddress()=="/numSamples") {
mNumSamples= math<int32_t>::clamp(msg.getArgAsInt32(0, true), 1, 2048);
} else if(msg.getAddress()=="/downSample") {
mDownSample= math<int32_t>::clamp(msg.getArgAsInt32(0, true), 0, 2047);
} else if(msg.getAddress()=="/amplitude") {
mAmplitude= msg.getArgAsFloat(0, true);
} else if(msg.getAddress()=="/width") {
mWidth= math<float>::clamp(msg.getArgAsFloat(0, true), 0, 1000);
} else if(msg.getAddress()=="/colorBack") {
ColorA col= ColorA(0, 0, 0, 1);
for(uint32_t i= 0; i<min(msg.getNumArgs(), 4); i++) {
col[i]= msg.getArgAsFloat(i, true);
}
mColorBack.set(col.r, col.g, col.b, col.a);
} else if(msg.getAddress()=="/scale0") {
Vec3f sca= Vec3f(1.0f, 1.0f, 1.0f);
for(uint32_t i= 0; i<min(msg.getNumArgs(), 3); i++) {
msg.getArgAsFloat(i, true);
}
mScale0.set(sca.x, sca.y, sca.z);
} else if(msg.getAddress()=="/scale1") {
Vec3f sca= Vec3f(1.0f, 1.0f, 1.0f);
for(uint32_t i= 0; i<min(msg.getNumArgs(), 3); i++) {
msg.getArgAsFloat(i, true);
}
mScale1.set(sca.x, sca.y, sca.z);
} else if(msg.getAddress()=="/rotate0") {
Vec3f rot= Vec3f::zero();
for(uint32_t i= 0; i<min(msg.getNumArgs(), 3); i++) {
rot[i]= msg.getArgAsFloat(i, true);
}
mRotate0.set(rot.x, rot.y, rot.z);
} else if(msg.getAddress()=="/rotate1") {
Vec3f rot= Vec3f::zero();
for(uint32_t i= 0; i<min(msg.getNumArgs(), 3); i++) {
rot[i]= msg.getArgAsFloat(i, true);
}
mRotate1.set(rot.x, rot.y, rot.z);
} else if(msg.getAddress()=="/translate0") {
Vec3f tra= Vec3f::zero();
for(uint32_t i= 0; i<min(msg.getNumArgs(), 3); i++) {
tra[i]= msg.getArgAsFloat(i, true);
}
mTranslate0.set(tra.x, tra.y, tra.z);
} else if(msg.getAddress()=="/translate1") {
Vec3f tra= Vec3f::zero();
for(uint32_t i= 0; i<min(msg.getNumArgs(), 3); i++) {
tra[i]= msg.getArgAsFloat(i, true);
}
mTranslate1.set(tra.x, tra.y, tra.z);
} else if(msg.getAddress()=="/color0") {
ColorA col= ColorA(0, 0, 0, 1);
for(uint32_t i= 0; i<min(msg.getNumArgs(), 4); i++) {
col[i]= msg.getArgAsFloat(i, true);
}
mColor0.set(col.r, col.g, col.b, col.a);
} else if(msg.getAddress()=="/color1") {
ColorA col= ColorA(0, 0, 0, 1);
for(uint32_t i= 0; i<min(msg.getNumArgs(), 4); i++) {
col[i]= msg.getArgAsFloat(i, true);
}
mColor1.set(col.r, col.g, col.b, col.a);
}
}
//--audio input
mPcmBuffer= mInput.getPcmBuffer();
if(mPcmBuffer) {
mBufferSize= mPcmBuffer->getSampleCount();
//std::cout<<"mBufferSize: "<<mBufferSize<<std::endl;
mBufferLeft= mPcmBuffer->getChannelData(audio::CHANNEL_FRONT_LEFT);
//mBufferRight= mPcmBuffer->getChannelData(audio::CHANNEL_FRONT_RIGHT);
mFftLeft= audio::calculateFft(mPcmBuffer->getChannelData(audio::CHANNEL_FRONT_LEFT), mBufferSize/2);
//mFftRight= audio::calculateFft(mPcmBuffer->getChannelData(audio::CHANNEL_FRONT_LEFT), mBufferSize/2);
mAmplitude= 0.0f;
for(uint32_t i= 0; i<mBufferSize; i++) {
mAmplitude += abs(mBufferLeft->mData[i]);
}
mAmplitude /= float(mBufferSize); //average amplitude
Surface32f mSurfaceSnd(mBufferSize, 1, true);
Surface32f::Iter sndIter(mSurfaceSnd.getIter());
uint32_t i= 0;
while(sndIter.line()) {
while(sndIter.pixel()) {
sndIter.r()= mBufferLeft->mData[i];
i++;
}
}
mTextureSnd= gl::Texture(mSurfaceSnd);
Surface32f mSurfaceFft(mBufferSize/2, 1, true);
Surface32f::Iter fftIter(mSurfaceFft.getIter());
uint32_t j= 0;
float *fftBuffer= mFftLeft.get();
while(fftIter.line()) {
while(fftIter.pixel()) {
fftIter.r()= fftBuffer[j];
j++;
}
}
mTextureFft= gl::Texture(mSurfaceFft);
}
//--shaders
if(mShader!=NULL) {
if((fs::last_write_time(mPathFrag)>mTimeFrag) || (fs::last_write_time(mPathVert)>mTimeVert)) {
loadShader(); //hot-loading shader
}
}
mFps= getAverageFps();
}
void SoundScapingApp::drawFft() {
float ht = 200.0f;
if( ! mPcmBuffer ) return;
//use the most recent Pcm data to calculate the Fft
std::shared_ptr<float> fftRef = audio::calculateFft( mPcmBuffer->getChannelData( audio::CHANNEL_FRONT_LEFT ), bandCount * 2);
if( ! fftRef ) {
std::cout << "Pb with fft" << std::endl;
return;
}
float * fftBuffer = fftRef.get();
float maxBand = *max_element(cumlFFT.begin() ,cumlFFT.end() );
float width = 6.0;
//draw the bands
for( int i = 0; i < ( bandCount ); i++ ) {
float barY = (fftBuffer[i] / bandCount) * ht;
glBegin( GL_QUADS );
glColor3f( 255.0f, 255.0f, 0.0f );
glVertex2f( i * width - 1, ht );
glVertex2f( i * width , ht );
glColor3f( 0.0f, 255.0f, 0.0f );
glVertex2f( i * width , ht - barY );
glVertex2f( i * width - 1, ht - barY );
glEnd();
barY = ( cumlFFT[i] += barY ) / maxBand ;
barY *= ht;
glPushMatrix();
glTranslatef( 0.0, 10.0, 0.0 );
glBegin( GL_QUADS );
glColor3f( 255.0f, 0.0f, 0.0f );
glVertex2f( i * width, ht );
glVertex2f( i * width + 1, ht );
glColor3f( 255.0f, 255.0f, 0.0f );
glVertex2f( i * width + 1,ht + barY );
glVertex2f( i * width, ht + barY );
glEnd();
glPopMatrix();
cumlFFT[i] *= 0.99;
}
glPushMatrix();
glTranslatef(600.0f, 0.0f, 0.0f);
float scale = 300.0f / maxBand;
glScalef(scale, scale, scale);
SoundArc::draw_bands( &cumlFFT[0], bandCount /2 );
glPopMatrix();
glPushMatrix();
glTranslatef(800.0f, 200.0f, 0.0f);
float scale2 = 600.0f / bandCount;
glScalef(scale2, scale2, scale2);
SoundArc::draw_bands( fftBuffer, bandCount /2 );
glPopMatrix();
}