127 lines
5.2 KiB
C#
127 lines
5.2 KiB
C#
//////////////////////////////////////////////////////////////////////////////////
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// //
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// Copyright © 2005-2020 nzsjb //
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// //
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// This Program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2, or (at your option) //
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// any later version. //
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// //
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// This Program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with GNU Make; see the file COPYING. If not, write to //
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// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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//////////////////////////////////////////////////////////////////////////////////
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using System;
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using DomainObjects;
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namespace DVBServices
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{
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/// <summary>
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/// The class that describes an Open TV Title section.
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/// </summary>
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public class OpenTVTitleSection
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{
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/// <summary>
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/// Get the section number.
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/// </summary>
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public int SectionNumber { get { return (sectionNumber); } }
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/// <summary>
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/// Get the section number.
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/// </summary>
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public int LastSectionNumber { get { return (lastSectionNumber); } }
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/// <summary>
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/// Get the title header.
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/// </summary>
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public OpenTVTitleHeader TitleHeader { get { return (titleHeader); } }
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private int sectionNumber;
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private int lastSectionNumber;
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private OpenTVTitleHeader titleHeader;
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private int lastIndex = -1;
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/// <summary>
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/// Initialize a new instance of the OpenTVTitleSection class.
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/// </summary>
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internal OpenTVTitleSection() { }
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/// <summary>
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/// Parse the section.
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/// </summary>
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/// <param name="byteData">The MPEG2 section containing the section.</param>
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/// <param name="mpeg2Header">The MPEG2 header that preceedes the section.</param>
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/// <param name="pid">The PID containing the section.</param>
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/// <param name="tid">The table ID containing the section.</param>
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internal void Process(byte[] byteData, Mpeg2ExtendedHeader mpeg2Header, int pid, int tid)
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{
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lastIndex = mpeg2Header.Index;
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sectionNumber = mpeg2Header.SectionNumber;
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lastSectionNumber = mpeg2Header.LastSectionNumber;
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titleHeader = new OpenTVTitleHeader();
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titleHeader.Process(byteData, lastIndex, mpeg2Header, pid, tid);
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}
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/// <summary>
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/// Log the section fields.
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/// </summary>
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public void LogMessage()
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{
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if (Logger.ProtocolLogger == null)
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return;
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titleHeader.LogMessage();
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}
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/// <summary>
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/// Process an MPEG2 section from the Open TV Title table.
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/// </summary>
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/// <param name="byteData">The MPEG2 section.</param>
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/// <param name="pid">The PID containing the section.</param>
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/// <param name="table">The table ID containing the section.</param>
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/// <returns>An Open TV Title Section instance or null if a section is not created.</returns>
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public static OpenTVTitleSection ProcessOpenTVTitleTable(byte[] byteData, int pid, int table)
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{
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Mpeg2ExtendedHeader mpeg2Header = new Mpeg2ExtendedHeader();
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try
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{
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mpeg2Header.Process(byteData);
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if (mpeg2Header.Current)
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{
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OpenTVTitleSection openTVTitleSection = new OpenTVTitleSection();
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openTVTitleSection.Process(byteData, mpeg2Header, pid, table);
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openTVTitleSection.LogMessage();
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return (openTVTitleSection);
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}
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else
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return (null);
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}
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catch (ArgumentOutOfRangeException e)
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{
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Logger.Instance.Write("<e> Error processing Title Section: " + e.Message);
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if (DebugEntry.IsDefined(DebugName.TitleSection))
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{
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Logger.Instance.Write(e.Message);
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Logger.Instance.Write(e.StackTrace);
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Logger.Instance.Dump("Title Section", byteData, byteData.Length);
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}
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return (null);
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}
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}
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}
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}
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