diff options
Diffstat (limited to 'tests/com/jsyn/util')
| -rw-r--r-- | tests/com/jsyn/util/DebugSampleLoader.java | 138 | ||||
| -rw-r--r-- | tests/com/jsyn/util/TestFFT.java | 98 | ||||
| -rw-r--r-- | tests/com/jsyn/util/TestPseudoRandom.java | 82 | ||||
| -rw-r--r-- | tests/com/jsyn/util/TestVoiceAllocator.java | 111 |
4 files changed, 429 insertions, 0 deletions
diff --git a/tests/com/jsyn/util/DebugSampleLoader.java b/tests/com/jsyn/util/DebugSampleLoader.java new file mode 100644 index 0000000..23945b5 --- /dev/null +++ b/tests/com/jsyn/util/DebugSampleLoader.java @@ -0,0 +1,138 @@ +/* + * Copyright 2010 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.util; + +import java.io.File; +import java.io.IOException; + +import com.jsyn.JSyn; +import com.jsyn.Synthesizer; +import com.jsyn.data.FloatSample; +import com.jsyn.unitgen.LineOut; +import com.jsyn.unitgen.VariableRateDataReader; +import com.jsyn.unitgen.VariableRateMonoReader; +import com.jsyn.unitgen.VariableRateStereoReader; + +/** + * Play a sample from a WAV file using JSyn. + * + * @author Phil Burk (C) 2010 Mobileer Inc + */ +public class DebugSampleLoader { + private Synthesizer synth; + private VariableRateDataReader samplePlayer; + private LineOut lineOut; + + private void test() throws IOException { + // File sampleFile = new File("samples/cello_markers.wav"); + // File sampleFile = new File("samples/Piano_A440_PT.aif"); + File sampleFile = new File("samples/sine_400_loop_i16.wav"); + // File sampleFile = new File("samples/TwoDiffPitchedSines_F32_PT.wav"); + // File sampleFile = new File("samples/sine_400_u8.aif"); + // File sampleFile = new File("samples/sine_400_s8.aif"); + // File sampleFile = new File("samples/sine_400_ulaw.aif"); + // File sampleFile = new File("samples/sine_400_ulaw.wav"); + + // File sampleFile = new File("samples/aaClarinet.wav"); + // File sampleFile = new File("samples/sine_400_mono.wav"); + // File sampleFile = new File("samples/sine_200_300_i16.wav"); + // File sampleFile = new File("samples/sine_200_300_i24.wav"); + // File sampleFile = new File("samples/M1F1-int16-AFsp.wav"); + // File sampleFile = new File("samples/M1F1-int24-AFsp.wav"); + // File sampleFile = new File("samples/M1F1-float32-AFsp.wav"); + // File sampleFile = new File("samples/M1F1-int16WE-AFsp.wav"); + // File sampleFile = new File("samples/M1F1-int24WE-AFsp.wav"); + // File sampleFile = new File("samples/M1F1-float32WE-AFsp.wav"); + // File sampleFile = new File("samples/sine_200_300_i16.aif"); + // File sampleFile = new File("samples/sine_200_300_f32.wavex"); + // File sampleFile = new File("samples/Sine32bit.aif"); + // File sampleFile = new File("samples/Sine32bit.wav"); + // File sampleFile = new File("samples/smartCue.wav"); + + // URL sampleFile = new URL("http://www.softsynth.com/samples/Clarinet.wav"); + + synth = JSyn.createSynthesizer(); + + FloatSample sample; + try { + // Add an output mixer. + synth.add(lineOut = new LineOut()); + + // Load the sample and display its properties. + SampleLoader.setJavaSoundPreferred(false); + sample = SampleLoader.loadFloatSample(sampleFile); + System.out.println("Sample has: channels = " + sample.getChannelsPerFrame()); + System.out.println(" frames = " + sample.getNumFrames()); + System.out.println(" rate = " + sample.getFrameRate()); + System.out.println(" loopStart = " + sample.getSustainBegin()); + System.out.println(" loopEnd = " + sample.getSustainEnd()); + + if (sample.getChannelsPerFrame() == 1) { + synth.add(samplePlayer = new VariableRateMonoReader()); + samplePlayer.output.connect(0, lineOut.input, 0); + } else if (sample.getChannelsPerFrame() == 2) { + synth.add(samplePlayer = new VariableRateStereoReader()); + samplePlayer.output.connect(0, lineOut.input, 0); + samplePlayer.output.connect(1, lineOut.input, 1); + } else { + throw new RuntimeException("Can only play mono or stereo samples."); + } + + // Start synthesizer using default stereo output at 44100 Hz. + synth.start(); + + samplePlayer.rate.set(sample.getFrameRate()); + + // We only need to start the LineOut. It will pull data from the + // sample player. + lineOut.start(); + + // We can simply queue the entire file. + // Or if it has a loop we can play the loop for a while. + if (sample.getSustainBegin() < 0) { + System.out.println("queue the sample"); + samplePlayer.dataQueue.queue(sample); + } else { + System.out.println("queueOn the sample"); + samplePlayer.dataQueue.queueOn(sample); + synth.sleepFor(8.0); + System.out.println("queueOff the sample"); + samplePlayer.dataQueue.queueOff(sample); + } + + // Wait until the sample has finished playing. + do { + synth.sleepFor(1.0); + } while (samplePlayer.dataQueue.hasMore()); + + } catch (IOException e1) { + e1.printStackTrace(); + } catch (InterruptedException e) { + e.printStackTrace(); + } + // Stop everything. + synth.stop(); + } + + public static void main(String[] args) { + try { + new DebugSampleLoader().test(); + } catch (IOException e) { + e.printStackTrace(); + } + } +} diff --git a/tests/com/jsyn/util/TestFFT.java b/tests/com/jsyn/util/TestFFT.java new file mode 100644 index 0000000..f7fcce6 --- /dev/null +++ b/tests/com/jsyn/util/TestFFT.java @@ -0,0 +1,98 @@ +/* + * Copyright 2009 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.util; + +import junit.framework.TestCase; + +import com.softsynth.math.FourierMath; + +public class TestFFT extends TestCase { + + @Override + protected void setUp() throws Exception { + super.setUp(); + } + + @Override + protected void tearDown() throws Exception { + super.tearDown(); + } + + public void checkSingleSine(int size, int bin) { + double[] ar = new double[size]; + double[] ai = new double[size]; + double[] magnitudes = new double[size]; + + double amplitude = 1.0; + addSineWave(size, bin, ar, amplitude); + + FourierMath.transform(1, size, ar, ai); + FourierMath.calculateMagnitudes(ar, ai, magnitudes); + + assertTrue(magnitudes[bin - 1] < 0.001); + assertTrue(magnitudes[bin] > 0.5); + assertTrue(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; + } + } + + public void testSingles() { + checkSingleSine(32, 1); + checkSingleSine(32, 2); + checkSingleSine(64, 5); + checkSingleSine(256, 3); + } + + public void checkInverseFFT(int size, int bin) { + double[] ar1 = new double[size]; + double[] ai1 = new double[size]; + double[] ar2 = new double[size]; + double[] ai2 = new double[size]; + + double amplitude = 1.0; + addSineWave(size, bin, ar1, amplitude); + + // Save a copy of the source. + System.arraycopy(ar1, 0, ar2, 0, size); + System.arraycopy(ai1, 0, ai2, 0, size); + + FourierMath.transform(1, size, ar1, ai1); // FFT + + FourierMath.transform(-1, size, ar1, ai1); // IFFT + + for (int i = 0; i < size; i++) { + assertEquals(ar2[i], ar1[i], 0.00001); + assertEquals(ai2[i], ai1[i], 0.00001); + } + } + + public void testInverse() { + checkInverseFFT(32, 1); + checkInverseFFT(32, 2); + checkInverseFFT(128, 17); + checkInverseFFT(512, 23); + } +} diff --git a/tests/com/jsyn/util/TestPseudoRandom.java b/tests/com/jsyn/util/TestPseudoRandom.java new file mode 100644 index 0000000..0ef2fa3 --- /dev/null +++ b/tests/com/jsyn/util/TestPseudoRandom.java @@ -0,0 +1,82 @@ +/* + * Copyright 2009 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.util; + +import junit.framework.TestCase; + +public class TestPseudoRandom extends TestCase { + PseudoRandom pseudoRandom; + private int[] bins; + private final static int BIN_SHIFTER = 8; + private final static int BIN_COUNT = 1 << BIN_SHIFTER; + private final static int BIN_MASK = BIN_COUNT - 1; + + @Override + protected void setUp() throws Exception { + super.setUp(); + pseudoRandom = new PseudoRandom(); + bins = new int[BIN_COUNT]; + } + + @Override + protected void tearDown() throws Exception { + super.tearDown(); + } + + public void testMath() { + long seed = 3964771111L; + int positiveInt = (int) (seed & 0x7FFFFFFF); + assertTrue("masked random positive, " + positiveInt, (positiveInt >= 0)); + double rand = positiveInt * (1.0 / (1L << 31)); + assertTrue("not too low, " + rand, (rand >= 0.0)); + assertTrue("not too high, " + rand, (rand < 1.0)); + } + + public void testIntegerDistribution() { + int scaler = 10; + for (int i = 0; i < (bins.length * scaler); i++) { + int rand = pseudoRandom.nextRandomInteger(); + int positiveInt = rand & 0x7FFFFFFF; + assertTrue("masked random " + positiveInt, (positiveInt >= 0)); + int index = (rand >> (32 - BIN_SHIFTER)) & BIN_MASK; + bins[index] += 1; + } + checkDistribution(scaler); + } + + public void test01Distribution() { + int scaler = 10; + for (int i = 0; i < (bins.length * scaler); i++) { + double rand = pseudoRandom.random(); + assertTrue("not too low, #" + i + " = " + rand, (rand >= 0.0)); + assertTrue("not too high, #" + i + " = " + rand, (rand < 1.0)); + int index = (int) (rand * BIN_COUNT); + bins[index] += 1; + } + checkDistribution(scaler); + } + + private void checkDistribution(int scaler) { + // Generate running average that should stay near scaler + double average = scaler; + double coefficient = 0.9; + for (int i = 0; i < (bins.length); i++) { + average = (average * coefficient) + (bins[i] * (1.0 - coefficient)); + assertEquals("average at " + i, scaler, average, 0.2 * scaler); + } + } +} diff --git a/tests/com/jsyn/util/TestVoiceAllocator.java b/tests/com/jsyn/util/TestVoiceAllocator.java new file mode 100644 index 0000000..fd5ba0b --- /dev/null +++ b/tests/com/jsyn/util/TestVoiceAllocator.java @@ -0,0 +1,111 @@ +/* + * Copyright 2009 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.util; + +import junit.framework.TestCase; + +import com.jsyn.instruments.SubtractiveSynthVoice; +import com.jsyn.unitgen.UnitVoice; + +public class TestVoiceAllocator extends TestCase { + VoiceAllocator allocator; + int max = 4; + private UnitVoice[] voices; + + @Override + protected void setUp() throws Exception { + super.setUp(); + + voices = new UnitVoice[max]; + for (int i = 0; i < max; i++) { + voices[i] = new SubtractiveSynthVoice(); + } + + allocator = new VoiceAllocator(voices); + } + + @Override + protected void tearDown() throws Exception { + super.tearDown(); + } + + public void testAllocation() { + assertEquals("get max", max, allocator.getVoiceCount()); + + int tag1 = 61; + int tag2 = 62; + int tag3 = 63; + int tag4 = 64; + int tag5 = 65; + int tag6 = 66; + UnitVoice voice1 = allocator.allocate(tag1); + assertTrue("voice should be non-null", (voice1 != null)); + + UnitVoice voice2 = allocator.allocate(tag2); + assertTrue("voice should be non-null", (voice2 != null)); + assertTrue("new voice ", (voice2 != voice1)); + + UnitVoice voice = allocator.allocate(tag1); + assertTrue("should be voice1 again ", (voice == voice1)); + + voice = allocator.allocate(tag2); + assertTrue("should be voice2 again ", (voice == voice2)); + + UnitVoice voice3 = allocator.allocate(tag3); + @SuppressWarnings("unused") + UnitVoice voice4 = allocator.allocate(tag4); + + UnitVoice voice5 = allocator.allocate(tag5); + assertTrue("ran out so get voice1 as oldest", (voice5 == voice1)); + + voice = allocator.allocate(tag2); + assertTrue("should be voice2 again ", (voice == voice2)); + + // Now voice 3 should be the oldest cuz voice 2 was touched. + UnitVoice voice6 = allocator.allocate(tag6); + assertTrue("ran out so get voice3 as oldest", (voice6 == voice3)); + } + + public void testOff() { + int tag1 = 61; + int tag2 = 62; + int tag3 = 63; + int tag4 = 64; + int tag5 = 65; + int tag6 = 66; + UnitVoice voice1 = allocator.allocate(tag1); + UnitVoice voice2 = allocator.allocate(tag2); + UnitVoice voice3 = allocator.allocate(tag3); + UnitVoice voice4 = allocator.allocate(tag4); + + assertTrue("voice 3 should start on", allocator.isOn(tag3)); + allocator.off(tag3); + assertEquals("voice 3 should now be off", false, allocator.isOn(tag3)); + + allocator.off(tag2); + + UnitVoice voice5 = allocator.allocate(tag5); + assertTrue("should get voice3 cuz off first", (voice5 == voice3)); + UnitVoice voice6 = allocator.allocate(tag6); + assertTrue("should get voice2 cuz off second", (voice6 == voice2)); + voice3 = allocator.allocate(tag3); + assertTrue("should get voice1 cuz on first", (voice3 == voice1)); + + voice1 = allocator.allocate(tag1); + assertTrue("should get voice4 cuz next up", (voice1 == voice4)); + } +} |