Exemplo n.º 1
0
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;
}
Exemplo n.º 2
0
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 );
	
}
Exemplo n.º 3
0
//*************************************************************************
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
    }
}
Exemplo n.º 5
0
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());
    }    
        
    
    
}
Exemplo n.º 6
0
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();*/
}
Exemplo n.º 7
0
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();
}
Exemplo n.º 8
0
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();

}