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