nortega/freqsample
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Added comments to Generator code.

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This commit is contained in:
Deathsbreed 2014-10-22 11:49:38 -05:00
parent dc9840b6e5
commit eb392746ed
1 changed files with 7 additions and 0 deletions
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7
src/freqsample/Generator.java
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@ -21,6 +21,7 @@ public class Generator {
double fCyclePosition = 0; double fCyclePosition = 0;
// Open Audio Device
AudioFormat af = new AudioFormat(SAMPLE_RATE, 16, 1, true, true); AudioFormat af = new AudioFormat(SAMPLE_RATE, 16, 1, true, true);
DataLine.Info info = new DataLine.Info(SourceDataLine.class, af); DataLine.Info info = new DataLine.Info(SourceDataLine.class, af);
@ -33,16 +34,21 @@ public class Generator {
line.open(af); line.open(af);
line.start(); line.start();
// The audio bytebuffer
ByteBuffer cBuf = ByteBuffer.allocate(line.getBufferSize()); ByteBuffer cBuf = ByteBuffer.allocate(line.getBufferSize());
// Set the total samples to loop through
if(msecs < 150) msecs = 150; if(msecs < 150) msecs = 150;
int ctSamplesTotal = (int)(SAMPLE_RATE * (msecs / 1000)); int ctSamplesTotal = (int)(SAMPLE_RATE * (msecs / 1000));
while(ctSamplesTotal > 0) { while(ctSamplesTotal > 0) {
// Define the frequency at the given sample rate
double fCycleInc = fFreq/SAMPLE_RATE; double fCycleInc = fFreq/SAMPLE_RATE;
// Clear the buffer
cBuf.clear(); cBuf.clear();
// Play the frequency
int ctSamplesThisPass = line.available() / SAMPLE_SIZE; int ctSamplesThisPass = line.available() / SAMPLE_SIZE;
for(int i = 0; i < ctSamplesThisPass; i++) { for(int i = 0; i < ctSamplesThisPass; i++) {
cBuf.putShort((short)(Short.MAX_VALUE * Math.sin(2 * Math.PI * fCyclePosition))); cBuf.putShort((short)(Short.MAX_VALUE * Math.sin(2 * Math.PI * fCyclePosition)));
@ -57,6 +63,7 @@ public class Generator {
} }
} }
// Close the audioline
line.drain(); line.drain();
line.close(); line.close();
} }