AudioFloatFormatConverter.java 文件源码

public AudioInputStream getAudioInputStream(AudioFormat targetFormat,
        AudioFloatInputStream sourceStream) {

    if (!isConversionSupported(targetFormat, sourceStream.getFormat()))
        throw new IllegalArgumentException("Unsupported conversion: "
                + sourceStream.getFormat().toString() + " to "
                + targetFormat.toString());
    if (targetFormat.getChannels() != sourceStream.getFormat()
            .getChannels())
        sourceStream = new AudioFloatInputStreamChannelMixer(sourceStream,
                targetFormat.getChannels());
    if (Math.abs(targetFormat.getSampleRate()
            - sourceStream.getFormat().getSampleRate()) > 0.000001)
        sourceStream = new AudioFloatInputStreamResampler(sourceStream,
                targetFormat);
    return new AudioInputStream(new AudioFloatFormatConverterInputStream(
            targetFormat, sourceStream), targetFormat, sourceStream
            .getFrameLength());
}