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Diffstat (limited to 'tests/com/jsyn/benchmarks/BenchJSyn.java')
| -rw-r--r-- | tests/com/jsyn/benchmarks/BenchJSyn.java | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/tests/com/jsyn/benchmarks/BenchJSyn.java b/tests/com/jsyn/benchmarks/BenchJSyn.java new file mode 100644 index 0000000..51e09a4 --- /dev/null +++ b/tests/com/jsyn/benchmarks/BenchJSyn.java @@ -0,0 +1,186 @@ +/* + * Copyright 2013 Phil Burk, Mobileer Inc + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/** + * + */ + +package com.jsyn.benchmarks; + +import com.jsyn.JSyn; +import com.jsyn.Synthesizer; +import com.jsyn.unitgen.PassThrough; +import com.jsyn.unitgen.SawtoothOscillator; +import com.jsyn.unitgen.SawtoothOscillatorBL; +import com.jsyn.unitgen.SawtoothOscillatorDPW; +import com.jsyn.unitgen.UnitOscillator; +import com.softsynth.math.FourierMath; + +/** + * @author Phil Burk (C) 2013 Mobileer Inc + */ +public class BenchJSyn { + private Synthesizer synth; + private long startTime; + private long endTime; + private PassThrough pass; + + public void run() { + try { + // Run multiple times to see if HotSpot compiler or cache makes a difference. + for (int i = 0; i < 4; i++) { + benchmark(); + } + } catch (InstantiationException e) { + e.printStackTrace(); + } catch (IllegalAccessException e) { + e.printStackTrace(); + } catch (InterruptedException e) { + e.printStackTrace(); + } + } + + private void benchmark() throws InstantiationException, IllegalAccessException, + InterruptedException { + double realTime = 10.0; + int count = 40; + + benchFFTDouble(); + benchFFTFloat(); + benchmarkOscillator(SawtoothOscillator.class, count, realTime); + benchmarkOscillator(SawtoothOscillatorDPW.class, count, realTime); + benchmarkOscillator(SawtoothOscillatorBL.class, count, realTime); + + } + + public void benchFFTDouble() { + int size = 2048; + int bin = 5; + int count = 20000; + double[] ar = new double[size]; + double[] ai = new double[size]; + double[] magnitudes = new double[size]; + + double amplitude = 1.0; + addSineWave(size, bin, ar, amplitude); + System.out.println("Bench double FFT"); + startTiming(); + for (int i = 0; i < count; i++) { + FourierMath.transform(1, size, ar, ai); + } + + endTiming(FourierMath.class, count, size / (2.0 * 44100)); + FourierMath.calculateMagnitudes(ar, ai, magnitudes); + + assert (magnitudes[bin - 1] < 0.001); + assert (magnitudes[bin] > 0.5); + assert (magnitudes[bin + 1] < 0.001); + + } + + public void benchFFTFloat() { + int size = 2048; + int bin = 5; + int count = 20000; + float[] ar = new float[size]; + float[] ai = new float[size]; + float[] magnitudes = new float[size]; + + float amplitude = 1.0f; + addSineWave(size, bin, ar, amplitude); + + System.out.println("Bench float FFT"); + startTiming(); + for (int i = 0; i < count; i++) { + FourierMath.transform(1, size, ar, ai); + } + + endTiming(FourierMath.class, count, size / (2.0 * 44100)); + FourierMath.calculateMagnitudes(ar, ai, magnitudes); + + assert (magnitudes[bin - 1] < 0.001); + assert (magnitudes[bin] > 0.5); + assert (magnitudes[bin + 1] < 0.001); + + } + + private void addSineWave(int size, int bin, double[] ar, double amplitude) { + double phase = 0.0; + double phaseIncrement = 2.0 * Math.PI * bin / size; + for (int i = 0; i < size; i++) { + ar[i] += Math.sin(phase) * amplitude; + // System.out.println( i + " = " + ar[i] ); + phase += phaseIncrement; + } + } + + private void addSineWave(int size, int bin, float[] ar, float amplitude) { + float phase = 0.0f; + float phaseIncrement = (float) (2.0 * Math.PI * bin / size); + for (int i = 0; i < size; i++) { + ar[i] += (float) Math.sin(phase) * amplitude; + // System.out.println( i + " = " + ar[i] ); + phase += phaseIncrement; + } + } + + private void stopSynth() { + synth.stop(); + } + + private void startSynth() { + synth = JSyn.createSynthesizer(); // Mac + // synth = JSyn.createSynthesizer( new JSynAndroidAudioDevice() ); // Android + synth.setRealTime(false); + pass = new PassThrough(); + synth.add(pass); + synth.start(); + pass.start(); + } + + private void benchmarkOscillator(Class<?> clazz, int count, double realTime) + throws InstantiationException, IllegalAccessException, InterruptedException { + startSynth(); + for (int i = 0; i < count; i++) { + UnitOscillator osc = (UnitOscillator) clazz.newInstance(); + osc.output.connect(pass.input); + synth.add(osc); + } + startTiming(); + synth.sleepFor(realTime); + endTiming(clazz, count, realTime); + stopSynth(); + } + + private void endTiming(Class<?> clazz, int count, double realTime) { + endTime = System.nanoTime(); + double elapsedTime = (endTime - startTime) * 1E-9; + double percent = 100.0 * elapsedTime / (realTime * count); + System.out.printf("%32s took %5.3f/%d seconds to process %5.4f of audio = %6.3f%c.\n", + clazz.getSimpleName(), elapsedTime, count, realTime, percent, '%'); + } + + private void startTiming() { + startTime = System.nanoTime(); + } + + /** + * @param args + */ + public static void main(String[] args) { + new BenchJSyn().run(); + } + +} |