AudioSystem.java 文件源码

/**
 * Obtains the encodings that the system can obtain from an
 * audio input stream with the specified encoding using the set
 * of installed format converters.
 * @param sourceEncoding the encoding for which conversion support
 * is queried
 * @return array of encodings.  If <code>sourceEncoding</code>is not supported,
 * an array of length 0 is returned. Otherwise, the array will have a length
 * of at least 1, representing <code>sourceEncoding</code> (no conversion).
 */
public static AudioFormat.Encoding[] getTargetEncodings(AudioFormat.Encoding sourceEncoding) {

    List codecs = getFormatConversionProviders();
    Vector encodings = new Vector();

    AudioFormat.Encoding encs[] = null;

    // gather from all the codecs
    for(int i=0; i<codecs.size(); i++ ) {
        FormatConversionProvider codec = (FormatConversionProvider) codecs.get(i);
        if( codec.isSourceEncodingSupported( sourceEncoding ) ) {
            encs = codec.getTargetEncodings();
            for (int j = 0; j < encs.length; j++) {
                encodings.addElement( encs[j] );
            }
        }
    }
    AudioFormat.Encoding encs2[] = (AudioFormat.Encoding[]) encodings.toArray(new AudioFormat.Encoding[0]);
    return encs2;
}