Java Code Examples for com.sun.media.sound.AudioSynthesizer#getReceiver()
The following examples show how to use
com.sun.media.sound.AudioSynthesizer#getReceiver() .
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Example 1
| Source File: GetReceiver2.java From dragonwell8_jdk with GNU General Public License v2.0 | 6 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
Receiver recv = synth.getReceiver();
assertTrue(recv != null);
ShortMessage sm = new ShortMessage();
sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
synth.open(new DummySourceDataLine(), null);
recv.send(sm, -1);
synth.close();
try
{
recv.send(sm, -1);
throw new RuntimeException("Exception not thrown!");
}
catch(Exception e)
{
// Just checking if exception is thrown
}
}
Example 2
| Source File: GetReceiver2.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
Receiver recv = synth.getReceiver();
assertTrue(recv != null);
ShortMessage sm = new ShortMessage();
sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
synth.open(new DummySourceDataLine(), null);
recv.send(sm, -1);
synth.close();
try
{
recv.send(sm, -1);
throw new RuntimeException("Exception not thrown!");
}
catch(Exception e)
{
// Just checking if exception is thrown
}
}
Example 3
| Source File: GetReceiver2.java From hottub with GNU General Public License v2.0 | 6 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
Receiver recv = synth.getReceiver();
assertTrue(recv != null);
ShortMessage sm = new ShortMessage();
sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
synth.open(new DummySourceDataLine(), null);
recv.send(sm, -1);
synth.close();
try
{
recv.send(sm, -1);
throw new RuntimeException("Exception not thrown!");
}
catch(Exception e)
{
// Just checking if exception is thrown
}
}
Example 4
| Source File: GetReceiver2.java From jdk8u_jdk with GNU General Public License v2.0 | 6 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
Receiver recv = synth.getReceiver();
assertTrue(recv != null);
ShortMessage sm = new ShortMessage();
sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
synth.open(new DummySourceDataLine(), null);
recv.send(sm, -1);
synth.close();
try
{
recv.send(sm, -1);
throw new RuntimeException("Exception not thrown!");
}
catch(Exception e)
{
// Just checking if exception is thrown
}
}
Example 5
| Source File: GetReceiver2.java From jdk8u-jdk with GNU General Public License v2.0 | 6 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
Receiver recv = synth.getReceiver();
assertTrue(recv != null);
ShortMessage sm = new ShortMessage();
sm.setMessage(ShortMessage.NOTE_OFF, 0, 64, 64);
synth.open(new DummySourceDataLine(), null);
recv.send(sm, -1);
synth.close();
try
{
recv.send(sm, -1);
throw new RuntimeException("Exception not thrown!");
}
catch(Exception e)
{
// Just checking if exception is thrown
}
}
Example 6
| Source File: GetMidiDevice.java From openjdk-jdk8u with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 7
| Source File: GetMidiDevice.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 8
| Source File: GetMidiDevice.java From jdk8u-jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 9
| Source File: GetMidiDevice.java From openjdk-8 with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 10
| Source File: GetMidiDevice.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 11
| Source File: GetMidiDevice.java From jdk8u_jdk with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 12
| Source File: GetMidiDevice.java From openjdk-8-source with GNU General Public License v2.0 | 5 votes |
|
public static void main(String[] args) throws Exception {
AudioSynthesizer synth = new SoftSynthesizer();
synth.openStream(null, null);
Receiver recv = synth.getReceiver();
if (((SoftReceiver) recv).getMidiDevice() != synth) {
throw new Exception("SoftReceiver.getMidiDevice() doesn't return "
+ "instance of the synthesizer");
}
synth.close();
}
Example 13
| Source File: TestPreciseTimestampRendering.java From openjdk-jdk8u with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 14
| Source File: TestPreciseTimestampRendering.java From jdk8u-dev-jdk with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 15
| Source File: TestPreciseTimestampRendering.java From openjdk-jdk8u-backup with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 16
| Source File: TestPreciseTimestampRendering.java From jdk8u-jdk with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 17
| Source File: TestPreciseTimestampRendering.java From openjdk-jdk9 with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 18
| Source File: TestPreciseTimestampRendering.java From hottub with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 19
| Source File: TestPreciseTimestampRendering.java From openjdk-8-source with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
Example 20
| Source File: TestPreciseTimestampRendering.java From openjdk-8 with GNU General Public License v2.0 | 4 votes |
|
public static void test(Soundbank soundbank) throws Exception {
// Create instance of synthesizer using the testing soundbank above
AudioSynthesizer synth = new SoftSynthesizer();
AudioInputStream stream = synth.openStream(format, null);
synth.unloadAllInstruments(synth.getDefaultSoundbank());
synth.loadAllInstruments(soundbank);
Receiver recv = synth.getReceiver();
// Set volume to max and turn reverb off
ShortMessage reverb_off = new ShortMessage();
reverb_off.setMessage(ShortMessage.CONTROL_CHANGE, 91, 0);
recv.send(reverb_off, -1);
ShortMessage full_volume = new ShortMessage();
full_volume.setMessage(ShortMessage.CONTROL_CHANGE, 7, 127);
recv.send(full_volume, -1);
Random random = new Random(3485934583945l);
// Create random timestamps
long[] test_timestamps = new long[30];
for (int i = 1; i < test_timestamps.length; i++) {
test_timestamps[i] = i * 44100
+ (int) (random.nextDouble() * 22050.0);
}
// Send midi note on message to synthesizer
for (int i = 0; i < test_timestamps.length; i++) {
ShortMessage midi_on = new ShortMessage();
midi_on.setMessage(ShortMessage.NOTE_ON, 69, 127);
recv.send(midi_on,
(long) ((test_timestamps[i] / 44100.0) * 1000000.0));
}
// Measure timing from rendered audio
float[] fbuffer = new float[100];
byte[] buffer = new byte[fbuffer.length * format.getFrameSize()];
long firsts = -1;
int counter = 0;
long s = 0;
long max_jitter = 0;
outerloop: for (int k = 0; k < 10000000; k++) {
stream.read(buffer);
AudioFloatConverter.getConverter(format).toFloatArray(buffer,
fbuffer);
for (int i = 0; i < fbuffer.length; i++) {
if (fbuffer[i] != 0) {
if (firsts == -1)
firsts = s;
long measure_time = (s - firsts);
long predicted_time = test_timestamps[counter];
long jitter = Math.abs(measure_time - predicted_time);
if (jitter > 10)
max_jitter = jitter;
counter++;
if (counter == test_timestamps.length)
break outerloop;
}
s++;
}
}
synth.close();
if (counter == 0)
throw new Exception("Nothing was measured!");
if (max_jitter != 0) {
throw new Exception("Jitter has occurred! "
+ "(max jitter = " + max_jitter + ")");
}
}
