libepg.epg.section.body.networkinformationtable.TransportStreamLoop.java Source code

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Here is the source code for libepg.epg.section.body.networkinformationtable.TransportStreamLoop.java

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/*
 * Copyright (C) 2016 normal
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package libepg.epg.section.body.networkinformationtable;

import loggingsupport.loggerfactory.LoggerFactory;
import java.lang.invoke.MethodHandles;
import java.text.MessageFormat;
import libepg.epg.section.descriptor.DescriptorsLoop;
import libepg.epg.section.range.SectionValueRangeChecker;
import libepg.util.bytearray.ByteConverter;
import libepg.util.bytearray.ByteDataBlock;
import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.logging.Log;

/**
 * ?
 *
 * @author normal
 */
public class TransportStreamLoop {

    /**
     * false?????????????
     */
    public static final boolean CLASS_LOG_OUTPUT_MODE = true;

    private static final Log LOG;

    static {
        final Class<?> myClass = MethodHandles.lookup().lookupClass();
        LOG = new LoggerFactory(myClass, TransportStreamLoop.CLASS_LOG_OUTPUT_MODE).getLOG();
    }

    private final ByteDataBlock data;

    public TransportStreamLoop(byte[] data) {
        this.data = new ByteDataBlock(data);
    }

    public byte[] getData() {
        return data.getData();
    }

    /**
     * ?<br>
     * 16bit<br>
     * SDT??????????????<br>
     *
     * @return ?
     * @throws IllegalStateException 0x0000????0xffff????
     */
    public final synchronized int getTransport_stream_id() throws IllegalStateException {
        byte[] t = new byte[2];
        System.arraycopy(this.getData(), 0, t, 0, t.length);
        int x = ByteConverter.bytesToInt(t);
        if (!SectionValueRangeChecker.TRANSPORT_STREAM_ID_RANGE.contains(x)) {
            throw new IllegalStateException("????  = "
                    + Integer.toHexString(x));
        }
        return x;
    }

    /**
     * original_network_id(?):??16???
     * ????????
     *
     * @return ?
     */
    public final synchronized int getOriginal_network_id() {
        byte[] t = new byte[2];
        System.arraycopy(this.getData(), 2, t, 0, t.length);
        int temp = ByteConverter.bytesToInt(t);
        return temp;
    }

    /**
     * ??????? ??????ARIB
     * STD-B10?????????????? 4bit
     *
     * @return ?
     */
    public final synchronized int getReserved_future_use() {
        int temp;
        temp = ByteConverter.byteToInt(this.getData()[4]);
        temp = temp >>> 4;
        return temp;
    }

    /**
     * descriptors_loop_length(?):network_descriptors_length????12
     * ??? ????????
     *
     * @return ?
     */
    public synchronized int getDescriptors_loop_length() {
        byte[] t = new byte[2];
        System.arraycopy(this.getData(), 4, t, 0, t.length);
        int it = ByteConverter.bytesToInt(t);
        it = it & 0x0FFF;
        return it;
    }

    /**
     * ???
     *
     * @return ?
     */
    public synchronized DescriptorsLoop getDescriptors_loop() {
        byte[] t = new byte[this.getDescriptors_loop_length()];
        if (t.length > 0) {
            System.arraycopy(this.getData(), 6, t, 0, t.length);
        }
        return new DescriptorsLoop(t);
    }

    /**
     * @return ????????
     */
    @Override
    public int hashCode() {
        return HashCodeBuilder.reflectionHashCode(7, 17, this);
    }

    /**
     * @return ???true
     */
    @Override
    public boolean equals(Object obj) {
        return EqualsBuilder.reflectionEquals(this, obj, true);
    }

    private static final String TITLE = "?";
    private static final MessageFormat TS_DESC = new MessageFormat(
            "\n" + TITLE + " ? = {0}\n" + TITLE + " ? = {1}\n"
                    + TITLE + " ? = {2}\n" + TITLE + "  = {3}\n" + TITLE
                    + " ? = {4}\n" + TITLE + " ? = {5}\n");

    @Override
    /**
     * ?????????
     */
    public String toString() {
        Object[] parameters = { this.data, Integer.toHexString(this.getTransport_stream_id()),
                Integer.toHexString(this.getOriginal_network_id()), this.getReserved_future_use(),
                this.getDescriptors_loop_length(), this.getDescriptors_loop() };
        return TS_DESC.format(parameters);
    }

}