78 lines
2.2 KiB
Java
78 lines
2.2 KiB
Java
|
package org.jcodec.audio;
|
||
|
|
|
||
|
|
import java.io.IOException;
|
||
|
|
import java.nio.FloatBuffer;
|
||
|
|
|
||
|
|
public class Audio {
|
||
|
|
public static void transfer(AudioSource src, AudioSink sink) throws IOException {
|
||
|
|
filterTransfer(src, new DummyFilter(1), sink);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void filterTransfer(AudioSource src, AudioFilter filter, AudioSink sink) throws IOException {
|
||
|
|
if (filter.getNInputs() != 1)
|
||
|
|
throw new IllegalArgumentException("Audio filter has # inputs != 1");
|
||
|
|
if (filter.getNOutputs() != 1)
|
||
|
|
throw new IllegalArgumentException("Audio filter has # outputs != 1");
|
||
|
|
if (filter.getDelay() != 0)
|
||
|
|
throw new IllegalArgumentException("Audio filter has delay");
|
||
|
|
FloatBuffer[] ins = { FloatBuffer.allocate(4096) };
|
||
|
|
FloatBuffer[] outs = { FloatBuffer.allocate(8192) };
|
||
|
|
long[] pos = new long[1];
|
||
|
|
while (src.readFloat(ins[0]) != -1) {
|
||
|
|
ins[0].flip();
|
||
|
|
filter.filter(ins, pos, outs);
|
||
|
|
pos[0] = pos[0] + (long)ins[0].position();
|
||
|
|
rotate(ins[0]);
|
||
|
|
outs[0].flip();
|
||
|
|
sink.writeFloat(outs[0]);
|
||
|
|
outs[0].clear();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void print(FloatBuffer buf) {
|
||
|
|
FloatBuffer dup = buf.duplicate();
|
||
|
|
while (dup.hasRemaining())
|
||
|
|
System.out.print(String.format("%.3f,", dup.get()));
|
||
|
|
System.out.println();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void rotate(FloatBuffer buf) {
|
||
|
|
int pos;
|
||
|
|
for (pos = 0; buf.hasRemaining(); pos++)
|
||
|
|
buf.put(pos, buf.get());
|
||
|
|
buf.position(pos);
|
||
|
|
buf.limit(buf.capacity());
|
||
|
|
}
|
||
|
|
|
||
|
|
public static class DummyFilter implements AudioFilter {
|
||
|
|
private int nInputs;
|
||
|
|
|
||
|
|
public DummyFilter(int nInputs) {
|
||
|
|
this.nInputs = nInputs;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void filter(FloatBuffer[] _in, long[] inPos, FloatBuffer[] out) {
|
||
|
|
for (int i = 0; i < _in.length; i++) {
|
||
|
|
if (out[i].remaining() >= _in[i].remaining()) {
|
||
|
|
out[i].put(_in[i]);
|
||
|
|
} else {
|
||
|
|
FloatBuffer duplicate = _in[i].duplicate();
|
||
|
|
duplicate.limit(_in[i].position() + out[i].remaining());
|
||
|
|
out[i].put(duplicate);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getDelay() {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getNInputs() {
|
||
|
|
return this.nInputs;
|
||
|
|
}
|
||
|
|
|
||
|
|
public int getNOutputs() {
|
||
|
|
return this.nInputs;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|