SubtitleEdit/libse/IfoParser.cs

598 lines
24 KiB
C#
Raw Normal View History

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Text;
namespace Nikse.SubtitleEdit.Core
{
public class IfoParser : IDisposable
{
public struct AudioStream
{
public int LanguageTypeSpecified;
public string Language;
public string LanguageCode;
public string CodingMode;
public int Channels;
public string Extension;
};
public struct VideoStream
{
public string Aspect;
public string Standard;
public string CodingMode;
public string Resolution;
}
public class VtsVobs
{
public int NumberOfAudioStreams;
public int NumberOfSubtitles;
public VideoStream VideoStream;
public List<AudioStream> AudioStreams;
public List<string> Subtitles;
public List<string> SubtitleIDs;
public List<string> SubtitleTypes;
public List<string> GetAllLanguages()
{
var list = new List<string>();
for (int i = 0; i < Subtitles.Count; i++)
{
if (i < SubtitleIDs.Count && i < SubtitleTypes.Count)
{
var ids = SubtitleIDs[i].Split(',');
var types = SubtitleTypes[i].Split(',');
if (ids.Length == 2 && ids[0].Trim() == ids[1].Trim() || ids.Length == 3 && ids[0].Trim() == ids[1].Trim() && ids[1].Trim() == ids[2].Trim())
{
list.Add(Subtitles[i] + " (" + ids[0].Trim() + ")");
}
else
{
if (ids.Length >= 1 && types.Length >= 1)
{
list.Add(Subtitles[i] + ", " + types[0].Trim() + " (" + ids[0].Trim() + ")");
}
if (ids.Length >= 2 && types.Length >= 2)
{
list.Add(Subtitles[i] + ", " + types[1].Trim() + " (" + ids[1].Trim() + ")");
}
if (ids.Length >= 3 && types.Length >= 3)
{
list.Add(Subtitles[i] + ", " + types[2].Trim() + " (" + ids[2].Trim() + ")");
}
if (ids.Length >= 4 && types.Length >= 4)
{
list.Add(Subtitles[i] + ", " + types[3].Trim() + " (" + ids[3].Trim() + ")");
}
}
}
}
return list;
}
public VtsVobs()
{
VideoStream = new VideoStream();
AudioStreams = new List<AudioStream>();
Subtitles = new List<string>();
SubtitleIDs = new List<string>();
SubtitleTypes = new List<string>();
}
};
public class ProgramChain
{
public int NumberOfPgc;
public int NumberOfCells;
public string PlaybackTime;
public List<byte> PgcEntryCells;
public List<string> PgcPlaybackTimes;
public List<string> PgcStartTimes;
public List<char> AudioStreamsAvailable;
public List<byte[]> SubtitlesAvailable;
public List<Color> ColorLookupTable;
public ProgramChain()
{
PgcEntryCells = new List<byte>();
PgcPlaybackTimes = new List<string>();
PgcStartTimes = new List<string>();
AudioStreamsAvailable = new List<char>();
SubtitlesAvailable = new List<byte[]>();
ColorLookupTable = new List<Color>();
}
public bool Has43Subs { get; set; }
public bool HasWideSubs { get; set; }
public bool HasLetterSubs { get; set; }
public bool HasPanSubs { get; set; }
public bool HasNoSpecificSubs { get; set; }
};
public class VtsPgci
{
public int NumberOfProgramChains;
public List<ProgramChain> ProgramChains;
public VtsPgci()
{
ProgramChains = new List<ProgramChain>();
}
};
private readonly List<string> _arrayOfAudioMode = new List<string> { "AC3", "...", "MPEG1", "MPEG2", "LPCM", "...", "DTS" };
private readonly List<string> _arrayOfAudioExtension = new List<string> { "unspecified", "normal", "for visually impaired", "director's comments", "alternate director's comments" };
private readonly List<string> _arrayOfAspect = new List<string> { "4:3", "...", "...", "16:9" };
private readonly List<string> _arrayOfStandard = new List<string> { "NTSC", "PAL", "...", "..." };
private readonly List<string> _arrayOfCodingMode = new List<string> { "MPEG1", "MPEG2" };
private readonly List<string> _arrayOfNtscResolution = new List<string> { "720x480", "704x480", "352x480", "352x240" };
private readonly List<string> _arrayOfPalResolution = new List<string> { "720x576", "704x576", "352x576", "352x288" };
public VtsPgci VideoTitleSetProgramChainTable { get { return _vtsPgci; } }
public VtsVobs VideoTitleSetVobs { get { return _vtsVobs; } }
public string ErrorMessage { get; private set; }
private readonly VtsVobs _vtsVobs = new VtsVobs();
private readonly VtsPgci _vtsPgci = new VtsPgci();
private FileStream _fs;
public IfoParser(string fileName)
{
try
{
_fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
var buffer = new byte[12];
_fs.Position = 0;
_fs.Read(buffer, 0, 12);
string id = Encoding.UTF8.GetString(buffer);
if (id != "DVDVIDEO-VTS")
{
ErrorMessage = string.Format(Configuration.Settings.Language.DvdSubRip.WrongIfoType, id, Environment.NewLine, fileName);
return;
}
ParseVtsVobs();
ParseVtsPgci();
_fs.Close();
}
catch (Exception exception)
{
ErrorMessage = exception.Message + Environment.NewLine + exception.StackTrace;
}
}
private void ParseVtsVobs()
{
var buffer = new byte[16];
//retrieve video info
_fs.Position = 0x200;
var data = IntToBin(GetEndian(2), 16);
_vtsVobs.VideoStream.CodingMode = _arrayOfCodingMode[BinToInt(MidStr(data, 0, 2))];
_vtsVobs.VideoStream.Standard = _arrayOfStandard[BinToInt(MidStr(data, 2, 2))];
_vtsVobs.VideoStream.Aspect = _arrayOfAspect[BinToInt(MidStr(data, 4, 2))];
if (_vtsVobs.VideoStream.Standard == "PAL")
_vtsVobs.VideoStream.Resolution = _arrayOfPalResolution[BinToInt(MidStr(data, 13, 2))];
else if (_vtsVobs.VideoStream.Standard == "NTSC")
_vtsVobs.VideoStream.Resolution = _arrayOfNtscResolution[BinToInt(MidStr(data, 13, 2))];
//retrieve audio info
_fs.Position = 0x202; //useless but here for readability
_vtsVobs.NumberOfAudioStreams = GetEndian(2);
for (int i = 0; i < _vtsVobs.NumberOfAudioStreams; i++)
{
var audioStream = new AudioStream();
data = IntToBin(GetEndian(2), 16);
audioStream.LanguageTypeSpecified = Convert.ToInt32(MidStr(data, 4, 2));
audioStream.CodingMode = _arrayOfAudioMode[(BinToInt(MidStr(data, 0, 3)))];
audioStream.Channels = BinToInt(MidStr(data, 13, 3)) + 1;
_fs.Read(buffer, 0, 2);
audioStream.LanguageCode = new string(new[] { Convert.ToChar(buffer[0]), Convert.ToChar(buffer[1]) });
var language = DvdSubtitleLanguage.GetLanguageOrNull(audioStream.LanguageCode);
if (language != null)
audioStream.Language = language.NativeName;
_fs.Seek(1, SeekOrigin.Current);
audioStream.Extension = _arrayOfAudioExtension[_fs.ReadByte()];
_fs.Seek(2, SeekOrigin.Current);
_vtsVobs.AudioStreams.Add(audioStream);
}
//retrieve subs info (only name)
_fs.Position = 0x254;
_vtsVobs.NumberOfSubtitles = GetEndian(2);
_fs.Position += 2;
for (int i = 0; i < _vtsVobs.NumberOfSubtitles; i++)
{
_fs.Read(buffer, 0, 2);
var languageTwoLetter = new string(new[] { Convert.ToChar(buffer[0]), Convert.ToChar(buffer[1]) });
_vtsVobs.Subtitles.Add(DvdSubtitleLanguage.GetNativeLanguageName(languageTwoLetter));
_fs.Read(buffer, 0, 2); // reserved for language code extension + code extension
//switch (buffer[0]) // 4, 8, 10-12 unused
//{
// // http://dvd.sourceforge.net/dvdinfo/sprm.html
// case 1: subtitleFormat = "(caption/normal size char)"; break; //0 = unspecified caption
// case 2: subtitleFormat = "(caption/large size char)"; break;
// case 3: subtitleFormat = "(caption for children)"; break;
// case 5: subtitleFormat = "(closed caption/normal size char)"; break;
// case 6: subtitleFormat = "(closed caption/large size char)"; break;
// case 7: subtitleFormat = "(closed caption for children)"; break;
// case 9: subtitleFormat = "(forced caption)"; break;
// case 13: subtitleFormat = "(director comments/normal size char)"; break;
// case 14: subtitleFormat = "(director comments/large size char)"; break;
// case 15: subtitleFormat = "(director comments for children)"; break;
//}
_fs.Position += 2;
}
}
private static int BinToInt(string p)
{
return Convert.ToInt32(p, 2);
}
private static string MidStr(string data, int start, int count)
{
return data.Substring(start, count);
}
private static string IntToBin(int value, int digits)
{
string result = Convert.ToString(value, 2);
while (result.Length < digits)
result = "0" + result;
return result;
}
private int GetEndian(int count)
{
int result = 0;
for (int i = count; i > 0; i--)
{
int b = _fs.ReadByte();
result = (result << 8) + b;
}
return result;
}
private void ParseVtsPgci()
{
const int sectorSize = 2048;
_fs.Position = 0xCC; //Get VTS_PGCI adress
int tableStart = sectorSize * GetEndian(4);
_fs.Position = tableStart;
_vtsPgci.NumberOfProgramChains = GetEndian(2);
_vtsPgci.ProgramChains = new List<ProgramChain>();
for (int i = 0; i < _vtsPgci.NumberOfProgramChains; i++)
{
//Parse PGC Header
var programChain = new ProgramChain();
_fs.Position = tableStart + 4 + 8 * (i + 1); //Get PGC adress
int programChainAdress = GetEndian(4);
_fs.Position = tableStart + programChainAdress + 2; //Move to PGC
programChain.NumberOfPgc = _fs.ReadByte();
programChain.NumberOfCells = _fs.ReadByte();
programChain.PlaybackTime = InterpretTime(GetEndian(4));
_fs.Seek(4, SeekOrigin.Current);
// check if audio streams are available for this PGC
_fs.Position = tableStart + programChainAdress + 0xC;
for (int j = 0; j < _vtsVobs.NumberOfAudioStreams; j++)
{
string temp = IntToBin(_fs.ReadByte(), 8);
programChain.AudioStreamsAvailable.Add(temp[0]);
_fs.Seek(1, SeekOrigin.Current);
}
// check if subtitles are available for this PGC
_fs.Position = tableStart + programChainAdress + 0x1C;
for (int j = 0; j < _vtsVobs.NumberOfSubtitles; j++)
{
// read and save full subpicture stream info inside program chain
var subtitle = new byte[4];
_fs.Read(subtitle, 0, 4);
programChain.SubtitlesAvailable.Add(subtitle);
}
CalculateSubtitleTypes(programChain);
//Parse Color LookUp Table (CLUT) - offset 00A4, 16*4 (0, Y, Cr, Cb)
_fs.Position = tableStart + programChainAdress + 0xA4;
for (int colorNumber = 0; colorNumber < 16; colorNumber++)
{
var colors = new byte[4];
_fs.Read(colors, 0, 4);
int y = colors[1] - 16;
int cr = colors[2] - 128;
int cb = colors[3] - 128;
int r = (int)Math.Min(Math.Max(Math.Round(1.1644F * y + 1.596F * cr), 0), 255);
int g = (int)Math.Min(Math.Max(Math.Round(1.1644F * y - 0.813F * cr - 0.391F * cb), 0), 255);
int b = (int)Math.Min(Math.Max(Math.Round(1.1644F * y + 2.018F * cb), 0), 255);
programChain.ColorLookupTable.Add(Color.FromArgb(r, g, b));
}
//Parse Program Map
_fs.Position = tableStart + programChainAdress + 0xE6;
_fs.Position = tableStart + programChainAdress + GetEndian(2);
for (int j = 0; j < programChain.NumberOfPgc; j++)
{
programChain.PgcEntryCells.Add((byte)_fs.ReadByte());
}
// Cell Playback Info Table to retrieve duration
_fs.Position = tableStart + programChainAdress + 0xE8;
_fs.Position = tableStart + programChainAdress + GetEndian(2);
var timeArray = new List<int>();
for (int k = 0; k < programChain.NumberOfPgc; k++)
{
int time = 0;
int max;
if (k == programChain.NumberOfPgc - 1)
max = programChain.NumberOfCells;
else
max = programChain.PgcEntryCells[k + 1] - 1;
for (int j = programChain.PgcEntryCells[k]; j <= max; j++)
{
_fs.Seek(4, SeekOrigin.Current);
time += TimeToMs(GetEndian(4));
_fs.Seek(16, SeekOrigin.Current);
}
programChain.PgcPlaybackTimes.Add(MsToTime(time));
timeArray.Add(time);
//convert to start time
time = 0;
for (int l = 1; l <= k; l++)
{
time += timeArray[l - 1];
}
if (k == 0)
programChain.PgcStartTimes.Add(MsToTime(0));
if (k > 0)
programChain.PgcStartTimes.Add(MsToTime(time));
}
_vtsPgci.ProgramChains.Add(programChain);
}
}
private void CalculateSubtitleTypes(ProgramChain programChain)
{
// Additional Code to analyse stream bytes
if (_vtsVobs.NumberOfSubtitles > 0)
{
// load the 'last' subpicture stream info,
// because if we have more than one subtitle stream,
// all subtitle positions > 0
// lastSubtitle[0] is related to 4:3
// lastSubtitle[1] is related to Wide
// lastSubtitle[2] is related to letterboxed
// lastSubtitle[3] is related to pan&scan
byte[] lastSubtitle = programChain.SubtitlesAvailable[programChain.SubtitlesAvailable.Count - 1];
int countSubs = 0;
// set defaults for all possible subpicture types and positions
programChain.Has43Subs = false;
programChain.HasWideSubs = false;
programChain.HasLetterSubs = false;
programChain.HasPanSubs = false;
programChain.HasNoSpecificSubs = true;
int pos43Subs = -1;
int posWideSubs = -1;
int posLetterSubs = -1;
int posPanSubs = -1;
// parse different subtitle bytes
if (lastSubtitle[0] > 0x80)
{
programChain.Has43Subs = true;
countSubs++; // 4:3
}
if (lastSubtitle[1] > 0)
{
programChain.HasWideSubs = true;
countSubs++; // wide
}
if (lastSubtitle[2] > 0)
{
programChain.HasLetterSubs = true;
countSubs++; // letterboxed
}
if (lastSubtitle[3] > 0)
{
programChain.HasPanSubs = true;
countSubs++; // pan&scan
}
if (countSubs == 0)
{
// may be, only a 4:3 stream exists
// -> lastSubtitle[0] = 0x80
}
else
{
if (_vtsVobs.NumberOfSubtitles == 1)
{
// only 1 stream exists, may be letterboxed
// if so we cound't find wide id, because lastSubtitle[1] = 0 !!
// corresponding wide stream byte is 0 => wide id = 0x20
// letterboxed = 0x21
if (programChain.HasLetterSubs && !programChain.HasWideSubs)
{
// repair it
programChain.HasWideSubs = true;
}
}
programChain.HasNoSpecificSubs = false;
}
// subpucture streams start with 0x20
int subStream = 0x20;
// Now we know all about available subpicture streams, including position type
// And we can create whole complete definitions for all avalable streams
foreach (byte[] subtitle in programChain.SubtitlesAvailable)
{
if (programChain.HasNoSpecificSubs)
{
// only one unspezified subpicture stream exists
_vtsVobs.SubtitleIDs.Add(string.Format("0x{0:x2}", subStream++));
_vtsVobs.SubtitleTypes.Add("unspecific");
}
else
{
// read stream position for evey subtitle type from subtitle byte
if (programChain.Has43Subs)
{
pos43Subs = subtitle[0] - 0x80;
}
if (programChain.HasWideSubs)
{
posWideSubs = subtitle[1];
}
if (programChain.HasLetterSubs)
{
posLetterSubs = subtitle[2];
}
if (programChain.HasPanSubs)
{
posPanSubs = subtitle[3];
}
// Now we can create subpicture id's and types for every stream
// All used subpicture id's and types will beappended to string, separated by colon
// So it's possible to split it later
string sub = string.Empty;
string subType = string.Empty;
if (programChain.Has43Subs)
{
sub = string.Format("0x{0:x2}", subStream + pos43Subs);
subType = "4:3";
}
if (programChain.HasWideSubs)
{
if (sub.Length > 0)
{
sub += ", ";
subType += ", ";
}
sub += string.Format("0x{0:x2}", subStream + posWideSubs);
subType += "wide";
}
if (programChain.HasLetterSubs)
{
if (sub.Length > 0)
{
sub += ", ";
subType += ", ";
}
sub += string.Format("0x{0:x2}", subStream + posLetterSubs);
subType += "letterboxed";
}
if (programChain.HasPanSubs)
{
if (sub.Length > 0)
{
sub += ", ";
subType += ", ";
}
sub += string.Format("0x{0:x2}", subStream + posPanSubs);
subType += "pan&scan";
}
_vtsVobs.SubtitleIDs.Add(sub);
_vtsVobs.SubtitleTypes.Add(subType);
}
}
}
}
private static int TimeToMs(int time)
{
double fps;
var temp = IntToBin(time, 32);
var result = StrToInt(IntToHex(BinToInt(MidStr(temp, 0, 8)), 1)) * 3600000;
result = result + StrToInt(IntToHex(BinToInt(MidStr(temp, 8, 8)), 2)) * 60000;
result = result + StrToInt(IntToHex(BinToInt(MidStr(temp, 16, 8)), 2)) * 1000;
if (temp.Substring(24, 2) == "11")
fps = 30;
else
fps = 25;
result += (int)Math.Round((TimeCode.BaseUnit / fps) * StrToFloat(IntToHex(BinToInt(MidStr(temp, 26, 6)), 3)));
return result;
}
private static double StrToFloat(string p)
{
return Convert.ToDouble(p, System.Globalization.CultureInfo.InvariantCulture);
}
private static int StrToInt(string p)
{
return int.Parse(p);
}
private static string IntToHex(int value, int digits)
{
string hex = value.ToString("X");
return hex.PadLeft(digits, '0');
}
private static string MsToTime(double milliseconds)
{
var ts = TimeSpan.FromMilliseconds(milliseconds);
string s = string.Format("{0:#0}:{1:00}:{2:00}.{3:000}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds);
return s;
}
private static string InterpretTime(int timeNumber)
{
string timeBytes = IntToBin(timeNumber, 32);
int h = StrToInt(IntToHex(BinToInt(timeBytes.Substring(0, 8)), 1));
int m = StrToInt(IntToHex(BinToInt(timeBytes.Substring(8, 8)), 2));
int s = StrToInt(IntToHex(BinToInt(timeBytes.Substring(16, 8)), 2));
int fps = 25;
if (timeBytes.Substring(24, 2) == "11")
fps = 30;
int milliseconds = (int)Math.Round((TimeCode.BaseUnit / fps) * StrToFloat(IntToHex(BinToInt(timeBytes.Substring(26, 6)), 3)));
var ts = new TimeSpan(0, h, m, s, milliseconds);
return MsToTime(ts.TotalMilliseconds);
}
private void ReleaseManagedResources()
{
if (_fs != null)
{
_fs.Dispose();
_fs = null;
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
protected virtual void Dispose(bool disposing)
{
if (disposing)
{
ReleaseManagedResources();
}
}
}
2016-01-24 11:51:04 +01:00
}