This is a useful piece of code if you have a DLS soundbank and want to minimize it with just the instruments/samples actually used in the song(s). If you for example bundle your soundbank in the jar-file, you can get some significant savings.
You'll have to get the gervill.jar first which is available here:
http://java.net/projects/gervill/downloads1
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| import java.io.File;
import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import com.sun.media.sound.DLSInstrument;
import com.sun.media.sound.DLSRegion;
import com.sun.media.sound.DLSSample;
import com.sun.media.sound.DLSSoundbank;
import com.sun.media.sound.ModelPatch;
public class DLSUtils {
public static DLSSoundbank createSimplifiedSoundbank(
DLSSoundbank soundbank, Map<Integer, Collection<Integer>> patches,
Map<Integer, Collection<Integer>> percussionKeys) {
DLSSoundbank result = new DLSSoundbank();
LinkedHashSet<DLSSample> samples = new LinkedHashSet<DLSSample>();
for (Integer bank : patches.keySet()) {
Collection<Integer> programs = patches.get(bank);
for (Integer program : programs) {
ModelPatch patch = new ModelPatch(bank, program, false);
DLSInstrument instrument = (DLSInstrument) soundbank
.getInstrument(patch);
List<DLSRegion> regions = instrument.getRegions();
for (DLSRegion region : regions) {
DLSSample sample = region.getSample();
samples.add(sample);
}
result.addInstrument(instrument);
}
}
for (Integer program : percussionKeys.keySet()) {
Collection<Integer> keys = percussionKeys.get(program);
ModelPatch patch = new ModelPatch(0, program, true);
DLSInstrument instrument = (DLSInstrument) soundbank
.getInstrument(patch);
List<DLSRegion> regions = instrument.getRegions();
ArrayList<DLSRegion> toRemove = new ArrayList<DLSRegion>();
for (DLSRegion region : regions) {
boolean add = false;
for (Integer key : keys) {
if (region.getKeyfrom() <= key && region.getKeyto() >= key) {
add = true;
break;
}
}
if (add) {
DLSSample sample = region.getSample();
samples.add(sample);
} else {
toRemove.add(region);
}
}
regions.removeAll(toRemove);
result.addInstrument(instrument);
}
for (DLSSample sample : samples) {
result.addResource(sample);
}
return result;
}
public static void main(String[] args) throws Exception {
DLSSoundbank sb = new DLSSoundbank(new FileInputStream(
"thepath/gm.dls"));
Map<Integer, Collection<Integer>> patches = new LinkedHashMap<Integer, Collection<Integer>>();
Map<Integer, Collection<Integer>> percussionKeys = new LinkedHashMap<Integer, Collection<Integer>>();
ArrayList<Integer> percussionKeysList = new ArrayList<Integer>();
percussionKeysList.add(35);
percussionKeysList.add(38);
percussionKeys.put(0, percussionKeysList);
ArrayList<Integer> melodicInstrumentList = new ArrayList<Integer>();
melodicInstrumentList.add(0);
patches.put(0, melodicInstrumentList);
DLSSoundbank sbResult = createSimplifiedSoundbank(sb, patches,
percussionKeys);
sbResult
.save(new File("thepath/gm2.dls"));
}
} |
