AuFileFormat.java 文件源码

AuFileFormat(final AudioFileFormat.Type type, final long byteLength,
             final AudioFormat format, final long frameLength) {
    super(type, byteLength, format, frameLength);

    AudioFormat.Encoding encoding = format.getEncoding();

    auType = -1;

    if (AudioFormat.Encoding.ALAW.equals(encoding)) {
        if (format.getSampleSizeInBits() == 8) {
            auType = AU_ALAW_8;
        }
    } else if (AudioFormat.Encoding.ULAW.equals(encoding)) {
        if (format.getSampleSizeInBits() == 8) {
            auType = AU_ULAW_8;
        }
    } else if (AudioFormat.Encoding.PCM_SIGNED.equals(encoding)) {
        if (format.getSampleSizeInBits() == 8) {
            auType = AU_LINEAR_8;
        } else if (format.getSampleSizeInBits() == 16) {
            auType = AU_LINEAR_16;
        } else if (format.getSampleSizeInBits() == 24) {
            auType = AU_LINEAR_24;
        } else if (format.getSampleSizeInBits() == 32) {
            auType = AU_LINEAR_32;
        }
    } else if (AudioFormat.Encoding.PCM_FLOAT.equals(encoding)) {
        if (format.getSampleSizeInBits() == 32) {
            auType = AU_FLOAT;
        }
    }
}