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Merge pull request #73 from EricBerendsen/packet192
Add support for 192 byte packets with tp_extra_header at the start
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src/main/java/nl/digitalekabeltelevisie/data/mpeg/AVCHDPacket.java
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| /** | ||
| * | ||
| * http://www.digitalekabeltelevisie.nl/dvb_inspector | ||
| * | ||
| * This code is Copyright 2009-2024 by Eric Berendsen (e_berendsen@digitalekabeltelevisie.nl) | ||
| * | ||
| * This file is part of DVB Inspector. | ||
| * | ||
| * DVB Inspector 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. | ||
| * | ||
| * DVB Inspector 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 DVB Inspector. If not, see <http://www.gnu.org/licenses/>. | ||
| * | ||
| * The author requests that he be notified of any application, applet, or | ||
| * other binary that makes use of this code, but that's more out of curiosity | ||
| * than anything and is not required. | ||
| * | ||
| */ | ||
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| package nl.digitalekabeltelevisie.data.mpeg; | ||
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| import static nl.digitalekabeltelevisie.util.Utils.*; | ||
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| import java.awt.Color; | ||
| import java.util.Arrays; | ||
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| import javax.swing.tree.DefaultMutableTreeNode; | ||
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| import nl.digitalekabeltelevisie.controller.KVP; | ||
| import nl.digitalekabeltelevisie.util.RangeHashMap; | ||
| import nl.digitalekabeltelevisie.util.Utils; | ||
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| /** | ||
| * AVCHD and Blu-ray use same format for 192 byte TS packets, first 4 bytes are tp_extra_header. | ||
| * See Table 3-34 TP_extra_header. in "Advanced Access Content System (AACS) Blu-ray Disc Pre-recorded Book" (AACS_Spec_BD_Prerecorded_Final_0.951.pdf) | ||
| * | ||
| * See <a href="https://stackoverflow.com/questions/32354754/how-to-use-timestamps-for-seeking-in-m2ts-files">https://stackoverflow.com/questions/32354754/how-to-use-timestamps-for-seeking-in-m2ts-files</a> | ||
| * | ||
| */ | ||
| public class AVCHDPacket extends TSPacket { | ||
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| byte[] tp_extra_header; | ||
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| int arrivalTimestamp; | ||
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| public AVCHDPacket(byte[] buf, int no, TransportStream ts) { | ||
| super(Arrays.copyOfRange(buf,4,192), no, ts); | ||
| tp_extra_header = Arrays.copyOf(buf,4); | ||
| arrivalTimestamp = getInt(tp_extra_header,0,4,MASK_30BITS); | ||
| } | ||
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| public byte[] getTP_extra_header() { | ||
| return tp_extra_header; | ||
| } | ||
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| public int getCopyPermissionIndicator() { | ||
| return (tp_extra_header[0] & 0b1100_0000)>>6; | ||
| } | ||
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| public int getArrivalTimestamp() { | ||
| return arrivalTimestamp; | ||
| } | ||
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| @Override | ||
| public DefaultMutableTreeNode getJTreeNode(final int modus) { | ||
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| final DefaultMutableTreeNode t = new DefaultMutableTreeNode(new KVP(buildNodeLabel(),this)); | ||
| final DefaultMutableTreeNode tpHeaderNode = new DefaultMutableTreeNode(new KVP("tp_extra_header",tp_extra_header,null)); | ||
| tpHeaderNode.add(new DefaultMutableTreeNode(new KVP("Copy_permission_indicator",getCopyPermissionIndicator(),null))); | ||
| tpHeaderNode.add(new DefaultMutableTreeNode(new KVP("Arrival_time_stamp",arrivalTimestamp,printPCRTime(arrivalTimestamp)))); | ||
| t.add(tpHeaderNode); | ||
| addMainPacketDetails(modus, t); | ||
| return t; | ||
| } | ||
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| @Override | ||
| public String getHTML() { | ||
| final StringBuilder s = new StringBuilder(); | ||
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| s.append("Packet: ").append(packetNo); | ||
| if(packetOffset!=-1){ | ||
| s.append("<br>File Offset: ").append(packetOffset); | ||
| } | ||
| if(transportStream!=null){ | ||
| s.append("<br>Time: ").append(transportStream.getPacketTime(packetNo)); | ||
| final short pid = transportStream.getPacket_pid(packetNo); | ||
| s.append("<br>").append(escapeHtmlBreakLines(transportStream.getShortLabel(pid))).append("<br>"); | ||
| } | ||
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| final RangeHashMap<Integer, Color> coloring = new RangeHashMap<>(); | ||
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| //tp_extra_header | ||
| Utils.appendHeader(s, "TP_extra_header: 0x" + toHexString(tp_extra_header, 0, 4), FEC_COLOR); | ||
| coloring.put(0, 4, FEC_COLOR); | ||
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| s.append("<br>Copy_permission_indicator: ").append(getCopyPermissionIndicator()); | ||
| s.append("<br>Arrival_time_stamp: ").append(getArrivalTimestamp()).append(" (").append(printPCRTime(getArrivalTimestamp())).append(")"); | ||
| s.append("</span><br>"); | ||
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| addBasicPacketDetails(s, 4, coloring); | ||
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| byte[] buf = new byte[192]; | ||
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| System.arraycopy(tp_extra_header, 0, buf, 0, 4); | ||
| System.arraycopy(buffer, 0, buf, 4, 188); | ||
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| s.append("<br><b>Data:</b><br>").append(getHTMLHexviewColored(buf,0,192,coloring)); | ||
| return s.toString(); | ||
| } | ||
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| /** | ||
| * for AVCHD file time corresponds to TP_header ATS (plus roll over | ||
| */ | ||
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| // TODO implement quirks mode for Humax, where last 9 bitss only use values 0-299 (like PCR) | ||
| @Override | ||
| public long getTimeBase() { | ||
| return transportStream.getAVCHDPacketTime(packetNo); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return super.toString() + " , arrivalTimestamp: " + arrivalTimestamp; | ||
| } | ||
| } |
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