Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.nio.ByteBuffer;

public class Main {
    /**
     * Returns the number of audio samples represented by the given DTS frame.
     *
     * @param data The frame to parse.
     * @return The number of audio samples represented by the frame.
     */
    public static int parseDtsAudioSampleCount(byte[] data) {
        // See ETSI TS 102 114 subsection 5.4.1.
        int nblks = ((data[4] & 0x01) << 6) | ((data[5] & 0xFC) >> 2);
        return (nblks + 1) * 32;
    }

    /**
     * Like {@link #parseDtsAudioSampleCount(byte[])} but reads from a {@link ByteBuffer}. The
     * buffer's position is not modified.
     *
     * @param buffer The {@link ByteBuffer} from which to read.
     * @return The number of audio samples represented by the syncframe.
     */
    public static int parseDtsAudioSampleCount(ByteBuffer buffer) {
        // See ETSI TS 102 114 subsection 5.4.1.
        int position = buffer.position();
        int nblks = ((buffer.get(position + 4) & 0x01) << 6) | ((buffer.get(position + 5) & 0xFC) >> 2);
        return (nblks + 1) * 32;
    }
}