Java Utils.getIntBE方法代码示例

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
/**
 * Construct box from data and adjust offets accordingly
 *
 * @param header             header info
 * @param originalDataBuffer data of box (doesnt include header data)
 * @param adjustment
 */
public Mp4StcoBox(Mp4BoxHeader header, ByteBuffer originalDataBuffer, int adjustment)
{
    this.header = header;

    //Make a slice of databuffer then we can work with relative or absolute methods safetly
    this.dataBuffer = originalDataBuffer.slice();

    //Skip the flags
    dataBuffer.position(dataBuffer.position() + VERSION_FLAG_LENGTH + OTHER_FLAG_LENGTH);

    //No of offsets
    this.noOfOffSets = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + NO_OF_OFFSETS_LENGTH - 1));
    dataBuffer.position(dataBuffer.position() + NO_OF_OFFSETS_LENGTH);

    for (int i = 0; i < noOfOffSets; i++)
    {
        int offset = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + NO_OF_OFFSETS_LENGTH - 1));

        //Calculate new offset and update buffer
        offset = offset + adjustment;
        dataBuffer.put(Utils.getSizeBEInt32(offset));
    }
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
/**
 * Create header using headerdata, expected to find header at headerdata current position
 * <p/>
 * Note after processing adjusts position to immediately after header
 *
 * @param headerData
 */
public void update(ByteBuffer headerData) {
    //Read header data into byte array
    byte[] b = new byte[HEADER_LENGTH];
    headerData.get(b);
    //Keep reference to copy of RawData
    dataBuffer = ByteBuffer.wrap(b);

    //Calculate box size
    this.length = Utils.getIntBE(b, OFFSET_POS, OFFSET_LENGTH - 1);
    //Calculate box id
    this.id = Utils.getString(b, IDENTIFIER_POS, IDENTIFIER_LENGTH, "ISO-8859-1");

    logger.finest("Mp4BoxHeader id:" + id + ":length:" + length);
    if (id.equals("\0\0\0\0")) {
        throw new NullBoxIdException(ErrorMessage.MP4_UNABLE_TO_FIND_NEXT_ATOM_BECAUSE_IDENTIFIER_IS_INVALID.getMsg(id));
    }

    if (length < HEADER_LENGTH) {
        throw new InvalidBoxHeaderException(ErrorMessage.MP4_UNABLE_TO_FIND_NEXT_ATOM_BECAUSE_IDENTIFIER_IS_INVALID.getMsg(id, length));
    }
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
/**
 * Construct box from data and show contents
 *
 * @param header header info
 * @param buffer data of box (doesnt include header data)
 */
public Mp4StcoBox(Mp4BoxHeader header, ByteBuffer buffer) {
    this.header = header;

    //Make a slice of databuffer then we can work with relative or absolute methods safetly
    dataBuffer = buffer.slice();

    //Skip the flags
    dataBuffer.position(dataBuffer.position() + VERSION_FLAG_LENGTH + OTHER_FLAG_LENGTH);

    //No of offsets
    this.noOfOffSets = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + NO_OF_OFFSETS_LENGTH - 1));
    dataBuffer.position(dataBuffer.position() + NO_OF_OFFSETS_LENGTH);

    //First Offset, useful for sanity checks
    firstOffSet = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + OFFSET_LENGTH - 1));
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
public void printTotalOffset()
{
    int offset = 0;
    dataBuffer.rewind();
    dataBuffer.position(VERSION_FLAG_LENGTH + OTHER_FLAG_LENGTH + NO_OF_OFFSETS_LENGTH);
    for (int i = 0; i < noOfOffSets - 1; i++)
    {
        offset += Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + OFFSET_LENGTH - 1));
        dataBuffer.position(dataBuffer.position() + OFFSET_LENGTH);
    }
    offset += Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + OFFSET_LENGTH - 1));
    System.out.println("Print Offset Total:" + offset);
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
public void printTotalOffset() {
    int offset = 0;
    dataBuffer.rewind();
    dataBuffer.position(VERSION_FLAG_LENGTH + OTHER_FLAG_LENGTH + NO_OF_OFFSETS_LENGTH);
    for (int i = 0; i < noOfOffSets - 1; i++) {
        offset += Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + OFFSET_LENGTH - 1));
        dataBuffer.position(dataBuffer.position() + OFFSET_LENGTH);
    }
    offset += Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + OFFSET_LENGTH - 1));
    System.out.println("Print Offset Total:" + offset);
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
public void adjustOffsets(int adjustment) {
    //Skip the flags
    dataBuffer.rewind();
    dataBuffer.position(dataBuffer.position() + VERSION_FLAG_LENGTH + OTHER_FLAG_LENGTH + NO_OF_OFFSETS_LENGTH);
    for (int i = 0; i < noOfOffSets; i++) {
        int offset = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + NO_OF_OFFSETS_LENGTH - 1));

        //Calculate new offset and update buffer
        offset = offset + adjustment;
        dataBuffer.put(Utils.getSizeBEInt32(offset));
    }
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
/**
 * @param header     header info
 * @param dataBuffer data of box (doesnt include header data)
 */
public Mp4MvhdBox(Mp4BoxHeader header, ByteBuffer dataBuffer) {
    this.header = header;
    byte version = dataBuffer.get(VERSION_FLAG_POS);

    if (version == LONG_FORMAT) {
        this.timeScale = Utils.getIntBE(dataBuffer, TIMESCALE_LONG_POS, (TIMESCALE_LONG_POS + TIMESCALE_LENGTH - 1));
        this.timeLength = Utils.getLongBE(dataBuffer, DURATION_LONG_POS, (DURATION_LONG_POS + DURATION_LONG_LENGTH - 1));
    } else {
        this.timeScale = Utils.getIntBE(dataBuffer, TIMESCALE_SHORT_POS, (TIMESCALE_SHORT_POS + TIMESCALE_LENGTH - 1));
        this.timeLength = Utils.getIntBE(dataBuffer, DURATION_SHORT_POS, (DURATION_SHORT_POS + DURATION_SHORT_LENGTH - 1));
    }
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
/**
 * @param header     header info
 * @param dataBuffer data of box (doesnt include header data)
 */
public Mp4MdhdBox(Mp4BoxHeader header, ByteBuffer dataBuffer) {
    this.header = header;

    byte version = dataBuffer.get(VERSION_FLAG_POS);

    long timeLength;
    if (version == LONG_FORMAT) {
        this.samplingRate = Utils.getIntBE(dataBuffer, TIMESCALE_LONG_POS, (TIMESCALE_LONG_POS + TIMESCALE_LENGTH - 1));
        timeLength = Utils.getLongBE(dataBuffer, DURATION_LONG_POS, (DURATION_LONG_POS + DURATION_LONG_LENGTH - 1));
    } else {
        this.samplingRate = Utils.getIntBE(dataBuffer, TIMESCALE_SHORT_POS, (TIMESCALE_SHORT_POS + TIMESCALE_LENGTH - 1));
        timeLength = Utils.getIntBE(dataBuffer, DURATION_SHORT_POS, (DURATION_SHORT_POS + DURATION_SHORT_LENGTH - 1));
    }
}
 

import org.jaudiotagger.audio.generic.Utils; //导入方法依赖的package包/类
/**
 * DataBuffer must start from from the start of the body
 *
 * @param header     header info
 * @param dataBuffer data of box (doesnt include header data)
 */
public Mp4EsdsBox(Mp4BoxHeader header, ByteBuffer dataBuffer) {
    this.header = header;

    //Not currently used, as lengths can extend over more than one section i think
    int sectionThreeLength;
    int sectionFourLength;
    int sectionFiveLength;
    int sectionSixLength;

    //As explained earlier the length of this atom is not fixed so processing is a bit more difficult
    //Process Flags
    dataBuffer.position(dataBuffer.position() + VERSION_FLAG_LENGTH + OTHER_FLAG_LENGTH);

    //Process Section 3 if exists
    if (dataBuffer.get() == SECTION_THREE) {
        sectionThreeLength = processSectionHeader(dataBuffer);
        //Skip Other Section 3 data
        dataBuffer.position(dataBuffer.position() + ES_ID_LENGTH + STREAM_PRIORITY_LENGTH);
    }

    //Process Section 4 (to getFields type and bitrate)
    if (dataBuffer.get() == SECTION_FOUR) {
        sectionFourLength = processSectionHeader(dataBuffer);

        //kind (in iTunes)
        kind = kindMap.get((int) dataBuffer.get());

        //Skip Other Section 4 data
        dataBuffer.position(dataBuffer.position() + STREAM_TYPE_LENGTH + BUFFER_SIZE_LENGTH);

        //Bit rates
        this.maxBitrate = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + MAX_BITRATE_LENGTH - 1));
        dataBuffer.position(dataBuffer.position() + MAX_BITRATE_LENGTH);

        this.avgBitrate = Utils.getIntBE(dataBuffer, dataBuffer.position(), (dataBuffer.position() + AVERAGE_BITRATE_LENGTH - 1));
        dataBuffer.position(dataBuffer.position() + AVERAGE_BITRATE_LENGTH);


    }
    //Process Section 5,(to getFields no of channels and audioprofile(profile in itunes))
    if (dataBuffer.get() == SECTION_FIVE) {
        sectionFiveLength = processSectionHeader(dataBuffer);

        //Audio Profile
        audioProfile = audioProfileMap.get((dataBuffer.get() >> 3));

        //Channels
        byte channelByte = dataBuffer.get();
        numberOfChannels = (channelByte << 1) >> 4;
    }

    //Process Section 6, not needed ...


}