Java 类com.sun.media.sound.RIFFWriter 实例源码

private void writeInfo(RIFFWriter writer) throws IOException {
    if (this.targetEngine == null)
        this.targetEngine = "EMU8000";
    if (this.name == null)
        this.name = "";

    RIFFWriter ifil_chunk = writer.writeChunk("ifil");
    ifil_chunk.writeUnsignedShort(this.major);
    ifil_chunk.writeUnsignedShort(this.minor);
    writeInfoStringChunk(writer, "isng", this.targetEngine);
    writeInfoStringChunk(writer, "INAM", this.name);
    writeInfoStringChunk(writer, "irom", this.romName);
    if (romVersionMajor != -1) {
        RIFFWriter iver_chunk = writer.writeChunk("iver");
        iver_chunk.writeUnsignedShort(this.romVersionMajor);
        iver_chunk.writeUnsignedShort(this.romVersionMinor);
    }
    writeInfoStringChunk(writer, "ICRD", this.creationDate);
    writeInfoStringChunk(writer, "IENG", this.engineers);
    writeInfoStringChunk(writer, "IPRD", this.product);
    writeInfoStringChunk(writer, "ICOP", this.copyright);
    writeInfoStringChunk(writer, "ICMT", this.comments);
    writeInfoStringChunk(writer, "ISFT", this.tools);

    writer.close();
}

private void writeGenerators(RIFFWriter writer, Map<Integer, Short> generators)
        throws IOException {
    Short keyrange = (Short) generators.get(SF2Region.GENERATOR_KEYRANGE);
    Short velrange = (Short) generators.get(SF2Region.GENERATOR_VELRANGE);
    if (keyrange != null) {
        writer.writeUnsignedShort(SF2Region.GENERATOR_KEYRANGE);
        writer.writeShort(keyrange);
    }
    if (velrange != null) {
        writer.writeUnsignedShort(SF2Region.GENERATOR_VELRANGE);
        writer.writeShort(velrange);
    }
    for (Map.Entry<Integer, Short> generator : generators.entrySet()) {
        if (generator.getKey() == SF2Region.GENERATOR_KEYRANGE)
            continue;
        if (generator.getKey() == SF2Region.GENERATOR_VELRANGE)
            continue;
        writer.writeUnsignedShort(generator.getKey());
        writer.writeShort(generator.getValue());
    }
}

private void writeInfoStringChunk(RIFFWriter writer, String name,
        String value) throws IOException {
    if (value == null)
        return;
    RIFFWriter chunk = writer.writeChunk(name);
    chunk.writeString(value);
    int len = value.getBytes("ascii").length;
    chunk.write(0);
    len++;
    if (len % 2 != 0)
        chunk.write(0);
}

private void writeModulators(RIFFWriter writer, List<SF2Modulator> modulators)
        throws IOException {
    for (SF2Modulator modulator : modulators) {
        writer.writeUnsignedShort(modulator.sourceOperator);
        writer.writeUnsignedShort(modulator.destinationOperator);
        writer.writeShort(modulator.amount);
        writer.writeUnsignedShort(modulator.amountSourceOperator);
        writer.writeUnsignedShort(modulator.transportOperator);
    }
}

public void save(String name) throws IOException {
    writeSoundbank(new RIFFWriter(name, "sfbk"));
}

public void save(File file) throws IOException {
    writeSoundbank(new RIFFWriter(file, "sfbk"));
}

public void save(OutputStream out) throws IOException {
    writeSoundbank(new RIFFWriter(out, "sfbk"));
}

private void writeSoundbank(RIFFWriter writer) throws IOException {
    writeInfo(writer.writeList("INFO"));
    writeSdtaChunk(writer.writeList("sdta"));
    writePdtaChunk(writer.writeList("pdta"));
    writer.close();
}