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247 lines
10 KiB
247 lines
10 KiB
//============================================================================
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// BDInfo - Blu-ray Video and Audio Analysis Tool
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// Copyright © 2010 Cinema Squid
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library 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 GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//=============================================================================
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#undef DEBUG
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using MediaBrowser.Model.IO;
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namespace BDInfo
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{
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public class TSStreamClipFile
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{
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private readonly IFileSystem _fileSystem;
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public FileSystemMetadata FileInfo = null;
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public string FileType = null;
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public bool IsValid = false;
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public string Name = null;
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public Dictionary<ushort, TSStream> Streams =
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new Dictionary<ushort, TSStream>();
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public TSStreamClipFile(FileSystemMetadata fileInfo, IFileSystem fileSystem)
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{
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FileInfo = fileInfo;
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_fileSystem = fileSystem;
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Name = fileInfo.Name.ToUpper();
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}
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public void Scan()
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{
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Stream fileStream = null;
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BinaryReader fileReader = null;
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try
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{
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#if DEBUG
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Debug.WriteLine(string.Format(
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"Scanning {0}...", Name));
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#endif
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Streams.Clear();
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fileStream = _fileSystem.OpenRead(FileInfo.FullName);
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fileReader = new BinaryReader(fileStream);
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byte[] data = new byte[fileStream.Length];
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fileReader.Read(data, 0, data.Length);
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byte[] fileType = new byte[8];
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Array.Copy(data, 0, fileType, 0, fileType.Length);
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FileType = Encoding.ASCII.GetString(fileType, 0, fileType.Length);
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if (FileType != "HDMV0100" &&
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FileType != "HDMV0200")
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{
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throw new Exception(string.Format(
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"Clip info file {0} has an unknown file type {1}.",
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FileInfo.Name, FileType));
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}
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#if DEBUG
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Debug.WriteLine(string.Format(
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"\tFileType: {0}", FileType));
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#endif
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int clipIndex =
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((int)data[12] << 24) +
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((int)data[13] << 16) +
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((int)data[14] << 8) +
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((int)data[15]);
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int clipLength =
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((int)data[clipIndex] << 24) +
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((int)data[clipIndex + 1] << 16) +
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((int)data[clipIndex + 2] << 8) +
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((int)data[clipIndex + 3]);
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byte[] clipData = new byte[clipLength];
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Array.Copy(data, clipIndex + 4, clipData, 0, clipData.Length);
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int streamCount = clipData[8];
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#if DEBUG
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Debug.WriteLine(string.Format(
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"\tStreamCount: {0}", streamCount));
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#endif
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int streamOffset = 10;
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for (int streamIndex = 0;
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streamIndex < streamCount;
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streamIndex++)
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{
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TSStream stream = null;
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ushort PID = (ushort)
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((clipData[streamOffset] << 8) +
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clipData[streamOffset + 1]);
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streamOffset += 2;
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var streamType = (TSStreamType)
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clipData[streamOffset + 1];
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switch (streamType)
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{
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case TSStreamType.MVC_VIDEO:
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// TODO
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break;
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case TSStreamType.AVC_VIDEO:
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case TSStreamType.MPEG1_VIDEO:
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case TSStreamType.MPEG2_VIDEO:
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case TSStreamType.VC1_VIDEO:
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{
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var videoFormat = (TSVideoFormat)
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(clipData[streamOffset + 2] >> 4);
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var frameRate = (TSFrameRate)
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(clipData[streamOffset + 2] & 0xF);
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var aspectRatio = (TSAspectRatio)
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(clipData[streamOffset + 3] >> 4);
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stream = new TSVideoStream();
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((TSVideoStream)stream).VideoFormat = videoFormat;
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((TSVideoStream)stream).AspectRatio = aspectRatio;
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((TSVideoStream)stream).FrameRate = frameRate;
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#if DEBUG
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Debug.WriteLine(string.Format(
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"\t{0} {1} {2} {3} {4}",
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PID,
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streamType,
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videoFormat,
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frameRate,
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aspectRatio));
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#endif
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}
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break;
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case TSStreamType.AC3_AUDIO:
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case TSStreamType.AC3_PLUS_AUDIO:
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case TSStreamType.AC3_PLUS_SECONDARY_AUDIO:
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case TSStreamType.AC3_TRUE_HD_AUDIO:
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case TSStreamType.DTS_AUDIO:
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case TSStreamType.DTS_HD_AUDIO:
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case TSStreamType.DTS_HD_MASTER_AUDIO:
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case TSStreamType.DTS_HD_SECONDARY_AUDIO:
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case TSStreamType.LPCM_AUDIO:
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case TSStreamType.MPEG1_AUDIO:
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case TSStreamType.MPEG2_AUDIO:
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{
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byte[] languageBytes = new byte[3];
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Array.Copy(clipData, streamOffset + 3,
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languageBytes, 0, languageBytes.Length);
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string languageCode = Encoding.ASCII.GetString(languageBytes, 0, languageBytes.Length);
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var channelLayout = (TSChannelLayout)
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(clipData[streamOffset + 2] >> 4);
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var sampleRate = (TSSampleRate)
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(clipData[streamOffset + 2] & 0xF);
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stream = new TSAudioStream();
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((TSAudioStream)stream).LanguageCode = languageCode;
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((TSAudioStream)stream).ChannelLayout = channelLayout;
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((TSAudioStream)stream).SampleRate = TSAudioStream.ConvertSampleRate(sampleRate);
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((TSAudioStream)stream).LanguageCode = languageCode;
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#if DEBUG
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Debug.WriteLine(string.Format(
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"\t{0} {1} {2} {3} {4}",
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PID,
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streamType,
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languageCode,
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channelLayout,
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sampleRate));
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#endif
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}
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break;
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case TSStreamType.INTERACTIVE_GRAPHICS:
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case TSStreamType.PRESENTATION_GRAPHICS:
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{
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byte[] languageBytes = new byte[3];
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Array.Copy(clipData, streamOffset + 2,
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languageBytes, 0, languageBytes.Length);
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string languageCode = Encoding.ASCII.GetString(languageBytes, 0, languageBytes.Length);
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stream = new TSGraphicsStream();
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stream.LanguageCode = languageCode;
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#if DEBUG
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Debug.WriteLine(string.Format(
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"\t{0} {1} {2}",
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PID,
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streamType,
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languageCode));
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#endif
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}
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break;
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case TSStreamType.SUBTITLE:
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{
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byte[] languageBytes = new byte[3];
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Array.Copy(clipData, streamOffset + 3,
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languageBytes, 0, languageBytes.Length);
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string languageCode = Encoding.ASCII.GetString(languageBytes, 0, languageBytes.Length);
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#if DEBUG
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Debug.WriteLine(string.Format(
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"\t{0} {1} {2}",
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PID,
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streamType,
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languageCode));
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#endif
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stream = new TSTextStream();
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stream.LanguageCode = languageCode;
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}
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break;
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}
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if (stream != null)
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{
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stream.PID = PID;
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stream.StreamType = streamType;
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Streams.Add(PID, stream);
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}
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streamOffset += clipData[streamOffset] + 1;
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}
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IsValid = true;
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}
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finally
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{
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if (fileReader != null) fileReader.Dispose();
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if (fileStream != null) fileStream.Dispose();
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}
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}
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}
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}
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