private void writePdtaChunk(RIFFWriter writer) throws IOException {
RIFFWriter phdr_chunk = writer.writeChunk("phdr");
int phdr_zone_count = 0;
for (SF2Instrument preset : this.instruments) {
phdr_chunk.writeString(preset.name, 20);
phdr_chunk.writeUnsignedShort(preset.preset);
phdr_chunk.writeUnsignedShort(preset.bank);
phdr_chunk.writeUnsignedShort(phdr_zone_count);
if (preset.getGlobalRegion() != null) phdr_zone_count += 1;
phdr_zone_count += preset.getRegions().size();
phdr_chunk.writeUnsignedInt(preset.library);
phdr_chunk.writeUnsignedInt(preset.genre);
phdr_chunk.writeUnsignedInt(preset.morphology);
}
phdr_chunk.writeString("EOP", 20);
phdr_chunk.writeUnsignedShort(0);
phdr_chunk.writeUnsignedShort(0);
phdr_chunk.writeUnsignedShort(phdr_zone_count);
phdr_chunk.writeUnsignedInt(0);
phdr_chunk.writeUnsignedInt(0);
phdr_chunk.writeUnsignedInt(0);
RIFFWriter pbag_chunk = writer.writeChunk("pbag");
int pbag_gencount = 0;
int pbag_modcount = 0;
for (SF2Instrument preset : this.instruments) {
if (preset.getGlobalRegion() != null) {
pbag_chunk.writeUnsignedShort(pbag_gencount);
pbag_chunk.writeUnsignedShort(pbag_modcount);
pbag_gencount += preset.getGlobalRegion().getGenerators().size();
pbag_modcount += preset.getGlobalRegion().getModulators().size();
}
for (SF2InstrumentRegion region : preset.getRegions()) {
pbag_chunk.writeUnsignedShort(pbag_gencount);
pbag_chunk.writeUnsignedShort(pbag_modcount);
if (layers.indexOf(region.layer) != -1) {
// One generator is used to reference to instrument record
pbag_gencount += 1;
}
pbag_gencount += region.getGenerators().size();
pbag_modcount += region.getModulators().size();
}
}
pbag_chunk.writeUnsignedShort(pbag_gencount);
pbag_chunk.writeUnsignedShort(pbag_modcount);
RIFFWriter pmod_chunk = writer.writeChunk("pmod");
for (SF2Instrument preset : this.instruments) {
if (preset.getGlobalRegion() != null) {
writeModulators(pmod_chunk, preset.getGlobalRegion().getModulators());
}
for (SF2InstrumentRegion region : preset.getRegions())
writeModulators(pmod_chunk, region.getModulators());
}
pmod_chunk.write(new byte[10]);
RIFFWriter pgen_chunk = writer.writeChunk("pgen");
for (SF2Instrument preset : this.instruments) {
if (preset.getGlobalRegion() != null) {
writeGenerators(pgen_chunk, preset.getGlobalRegion().getGenerators());
}
for (SF2InstrumentRegion region : preset.getRegions()) {
writeGenerators(pgen_chunk, region.getGenerators());
int ix = (int) layers.indexOf(region.layer);
if (ix != -1) {
pgen_chunk.writeUnsignedShort(SF2Region.GENERATOR_INSTRUMENT);
pgen_chunk.writeShort((short) ix);
}
}
}
pgen_chunk.write(new byte[4]);
RIFFWriter inst_chunk = writer.writeChunk("inst");
int inst_zone_count = 0;
for (SF2Layer instrument : this.layers) {
inst_chunk.writeString(instrument.name, 20);
inst_chunk.writeUnsignedShort(inst_zone_count);
if (instrument.getGlobalRegion() != null) inst_zone_count += 1;
inst_zone_count += instrument.getRegions().size();
}
inst_chunk.writeString("EOI", 20);
inst_chunk.writeUnsignedShort(inst_zone_count);
RIFFWriter ibag_chunk = writer.writeChunk("ibag");
int ibag_gencount = 0;
int ibag_modcount = 0;
for (SF2Layer instrument : this.layers) {
if (instrument.getGlobalRegion() != null) {
ibag_chunk.writeUnsignedShort(ibag_gencount);
ibag_chunk.writeUnsignedShort(ibag_modcount);
ibag_gencount += instrument.getGlobalRegion().getGenerators().size();
ibag_modcount += instrument.getGlobalRegion().getModulators().size();
}
for (SF2LayerRegion region : instrument.getRegions()) {
ibag_chunk.writeUnsignedShort(ibag_gencount);
ibag_chunk.writeUnsignedShort(ibag_modcount);
if (samples.indexOf(region.sample) != -1) {
// One generator is used to reference to instrument record
ibag_gencount += 1;
}
ibag_gencount += region.getGenerators().size();
ibag_modcount += region.getModulators().size();
}
}
ibag_chunk.writeUnsignedShort(ibag_gencount);
ibag_chunk.writeUnsignedShort(ibag_modcount);
RIFFWriter imod_chunk = writer.writeChunk("imod");
for (SF2Layer instrument : this.layers) {
if (instrument.getGlobalRegion() != null) {
writeModulators(imod_chunk, instrument.getGlobalRegion().getModulators());
}
for (SF2LayerRegion region : instrument.getRegions())
writeModulators(imod_chunk, region.getModulators());
}
imod_chunk.write(new byte[10]);
RIFFWriter igen_chunk = writer.writeChunk("igen");
for (SF2Layer instrument : this.layers) {
if (instrument.getGlobalRegion() != null) {
writeGenerators(igen_chunk, instrument.getGlobalRegion().getGenerators());
}
for (SF2LayerRegion region : instrument.getRegions()) {
writeGenerators(igen_chunk, region.getGenerators());
int ix = samples.indexOf(region.sample);
if (ix != -1) {
igen_chunk.writeUnsignedShort(SF2Region.GENERATOR_SAMPLEID);
igen_chunk.writeShort((short) ix);
}
}
}
igen_chunk.write(new byte[4]);
RIFFWriter shdr_chunk = writer.writeChunk("shdr");
long sample_pos = 0;
for (SF2Sample sample : samples) {
shdr_chunk.writeString(sample.name, 20);
long start = sample_pos;
sample_pos += sample.data.capacity() / 2;
long end = sample_pos;
long startLoop = sample.startLoop + start;
long endLoop = sample.endLoop + start;
if (startLoop < start) startLoop = start;
if (endLoop > end) endLoop = end;
shdr_chunk.writeUnsignedInt(start);
shdr_chunk.writeUnsignedInt(end);
shdr_chunk.writeUnsignedInt(startLoop);
shdr_chunk.writeUnsignedInt(endLoop);
shdr_chunk.writeUnsignedInt(sample.sampleRate);
shdr_chunk.writeUnsignedByte(sample.originalPitch);
shdr_chunk.writeByte(sample.pitchCorrection);
shdr_chunk.writeUnsignedShort(sample.sampleLink);
shdr_chunk.writeUnsignedShort(sample.sampleType);
sample_pos += 32;
}
shdr_chunk.writeString("EOS", 20);
shdr_chunk.write(new byte[26]);
}
