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Implement & exercise getKeyFrameMap in JNI

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This commit is contained in:
Chris Cannam
2023-12-14 14:31:08 +00:00
parent e54fd1fd95
commit dc745e3487
3 changed files with 70 additions and 2 deletions
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32
com/breakfastquay/rubberband/test/RubberBandTest.java
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@@ -3,6 +3,8 @@ package com.breakfastquay.rubberband.test;
import com.breakfastquay.rubberband.RubberBandStretcher;
import java.util.TreeMap;
public class RubberBandTest
{
@@ -15,7 +17,7 @@ public class RubberBandTest
(rate,
channels,
RubberBandStretcher.OptionEngineFiner +
RubberBandStretcher.OptionProcessRealTime,
RubberBandStretcher.OptionProcessOffline,
1.0,
1.0);
@@ -38,11 +40,16 @@ public class RubberBandTest
));
int blocksize = 1024;
int blocks = 200;
int blocks = 400;
double freq = 440.0;
stretcher.setMaxProcessSize(blocksize);
TreeMap<Long, Long> keyFrameMap = new TreeMap<Long, Long>();
keyFrameMap.put((long)(3 * rate), (long)(4 * rate));
keyFrameMap.put((long)(5 * rate), (long)(5 * rate));
stretcher.setKeyFrameMap(keyFrameMap);
float[][] buffer = new float[channels][blocksize];
int i0 = 0;
@@ -53,6 +60,27 @@ public class RubberBandTest
for (int i = 0; i < blocksize; ++i) {
buffer[c][i] = (float)Math.sin
((double)i0 * freq * Math.PI * 2.0 / (double)rate);
if (i0 % rate == 0) {
buffer[c][i] = 1.f;
}
++i0;
}
}
stretcher.study(buffer, block + 1 == blocks);
}
i0 = 0;
for (int block = 0; block < blocks; ++block) {
for (int c = 0; c < channels; ++c) {
for (int i = 0; i < blocksize; ++i) {
buffer[c][i] = (float)Math.sin
((double)i0 * freq * Math.PI * 2.0 / (double)rate);
if (i0 % rate == 0) {
buffer[c][i] = 1.f;
}
++i0;
}
}