mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-11-22 11:12:36 +01:00
598 lines
24 KiB
C#
598 lines
24 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.IO;
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using System.Text;
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namespace Nikse.SubtitleEdit.Core
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{
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public class IfoParser : IDisposable
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{
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public struct AudioStream
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{
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public int LanguageTypeSpecified;
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public string Language;
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public string LanguageCode;
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public string CodingMode;
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public int Channels;
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public string Extension;
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};
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public struct VideoStream
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{
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public string Aspect;
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public string Standard;
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public string CodingMode;
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public string Resolution;
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}
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public class VtsVobs
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{
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public int NumberOfAudioStreams;
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public int NumberOfSubtitles;
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public VideoStream VideoStream;
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public List<AudioStream> AudioStreams;
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public List<string> Subtitles;
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public List<string> SubtitleIDs;
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public List<string> SubtitleTypes;
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public List<string> GetAllLanguages()
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{
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var list = new List<string>();
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for (int i = 0; i < Subtitles.Count; i++)
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{
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if (i < SubtitleIDs.Count && i < SubtitleTypes.Count)
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{
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var ids = SubtitleIDs[i].Split(',');
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var types = SubtitleTypes[i].Split(',');
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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())
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{
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list.Add(Subtitles[i] + " (" + ids[0].Trim() + ")");
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}
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else
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{
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if (ids.Length >= 1 && types.Length >= 1)
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{
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list.Add(Subtitles[i] + ", " + types[0].Trim() + " (" + ids[0].Trim() + ")");
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}
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if (ids.Length >= 2 && types.Length >= 2)
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{
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list.Add(Subtitles[i] + ", " + types[1].Trim() + " (" + ids[1].Trim() + ")");
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}
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if (ids.Length >= 3 && types.Length >= 3)
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{
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list.Add(Subtitles[i] + ", " + types[2].Trim() + " (" + ids[2].Trim() + ")");
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}
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if (ids.Length >= 4 && types.Length >= 4)
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{
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list.Add(Subtitles[i] + ", " + types[3].Trim() + " (" + ids[3].Trim() + ")");
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}
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}
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}
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}
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return list;
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}
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public VtsVobs()
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{
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VideoStream = new VideoStream();
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AudioStreams = new List<AudioStream>();
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Subtitles = new List<string>();
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SubtitleIDs = new List<string>();
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SubtitleTypes = new List<string>();
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}
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};
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public class ProgramChain
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{
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public int NumberOfPgc;
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public int NumberOfCells;
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public string PlaybackTime;
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public List<byte> PgcEntryCells;
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public List<string> PgcPlaybackTimes;
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public List<string> PgcStartTimes;
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public List<char> AudioStreamsAvailable;
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public List<byte[]> SubtitlesAvailable;
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public List<Color> ColorLookupTable;
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public ProgramChain()
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{
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PgcEntryCells = new List<byte>();
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PgcPlaybackTimes = new List<string>();
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PgcStartTimes = new List<string>();
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AudioStreamsAvailable = new List<char>();
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SubtitlesAvailable = new List<byte[]>();
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ColorLookupTable = new List<Color>();
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}
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public bool Has43Subs { get; set; }
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public bool HasWideSubs { get; set; }
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public bool HasLetterSubs { get; set; }
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public bool HasPanSubs { get; set; }
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public bool HasNoSpecificSubs { get; set; }
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};
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public class VtsPgci
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{
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public int NumberOfProgramChains;
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public List<ProgramChain> ProgramChains;
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public VtsPgci()
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{
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ProgramChains = new List<ProgramChain>();
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}
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};
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private readonly List<string> _arrayOfAudioMode = new List<string> { "AC3", "...", "MPEG1", "MPEG2", "LPCM", "...", "DTS" };
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private readonly List<string> _arrayOfAudioExtension = new List<string> { "unspecified", "normal", "for visually impaired", "director's comments", "alternate director's comments" };
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private readonly List<string> _arrayOfAspect = new List<string> { "4:3", "...", "...", "16:9" };
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private readonly List<string> _arrayOfStandard = new List<string> { "NTSC", "PAL", "...", "..." };
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private readonly List<string> _arrayOfCodingMode = new List<string> { "MPEG1", "MPEG2" };
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private readonly List<string> _arrayOfNtscResolution = new List<string> { "720x480", "704x480", "352x480", "352x240" };
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private readonly List<string> _arrayOfPalResolution = new List<string> { "720x576", "704x576", "352x576", "352x288" };
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public VtsPgci VideoTitleSetProgramChainTable { get { return _vtsPgci; } }
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public VtsVobs VideoTitleSetVobs { get { return _vtsVobs; } }
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public string ErrorMessage { get; private set; }
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private readonly VtsVobs _vtsVobs = new VtsVobs();
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private readonly VtsPgci _vtsPgci = new VtsPgci();
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private FileStream _fs;
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public IfoParser(string fileName)
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{
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try
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{
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_fs = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
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var buffer = new byte[12];
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_fs.Position = 0;
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_fs.Read(buffer, 0, 12);
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string id = Encoding.UTF8.GetString(buffer);
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if (id != "DVDVIDEO-VTS")
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{
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ErrorMessage = string.Format(Configuration.Settings.Language.DvdSubRip.WrongIfoType, id, Environment.NewLine, fileName);
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return;
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}
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ParseVtsVobs();
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ParseVtsPgci();
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_fs.Close();
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}
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catch (Exception exception)
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{
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ErrorMessage = exception.Message + Environment.NewLine + exception.StackTrace;
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}
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}
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private void ParseVtsVobs()
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{
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var buffer = new byte[16];
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//retrieve video info
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_fs.Position = 0x200;
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var data = IntToBin(GetEndian(2), 16);
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_vtsVobs.VideoStream.CodingMode = _arrayOfCodingMode[BinToInt(MidStr(data, 0, 2))];
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_vtsVobs.VideoStream.Standard = _arrayOfStandard[BinToInt(MidStr(data, 2, 2))];
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_vtsVobs.VideoStream.Aspect = _arrayOfAspect[BinToInt(MidStr(data, 4, 2))];
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if (_vtsVobs.VideoStream.Standard == "PAL")
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_vtsVobs.VideoStream.Resolution = _arrayOfPalResolution[BinToInt(MidStr(data, 13, 2))];
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else if (_vtsVobs.VideoStream.Standard == "NTSC")
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_vtsVobs.VideoStream.Resolution = _arrayOfNtscResolution[BinToInt(MidStr(data, 13, 2))];
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//retrieve audio info
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_fs.Position = 0x202; //useless but here for readability
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_vtsVobs.NumberOfAudioStreams = GetEndian(2);
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for (int i = 0; i < _vtsVobs.NumberOfAudioStreams; i++)
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{
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var audioStream = new AudioStream();
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data = IntToBin(GetEndian(2), 16);
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audioStream.LanguageTypeSpecified = Convert.ToInt32(MidStr(data, 4, 2));
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audioStream.CodingMode = _arrayOfAudioMode[(BinToInt(MidStr(data, 0, 3)))];
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audioStream.Channels = BinToInt(MidStr(data, 13, 3)) + 1;
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_fs.Read(buffer, 0, 2);
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audioStream.LanguageCode = new string(new[] { Convert.ToChar(buffer[0]), Convert.ToChar(buffer[1]) });
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var language = DvdSubtitleLanguage.GetLanguageOrNull(audioStream.LanguageCode);
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if (language != null)
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audioStream.Language = language.NativeName;
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_fs.Seek(1, SeekOrigin.Current);
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audioStream.Extension = _arrayOfAudioExtension[_fs.ReadByte()];
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_fs.Seek(2, SeekOrigin.Current);
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_vtsVobs.AudioStreams.Add(audioStream);
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}
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//retrieve subs info (only name)
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_fs.Position = 0x254;
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_vtsVobs.NumberOfSubtitles = GetEndian(2);
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_fs.Position += 2;
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for (int i = 0; i < _vtsVobs.NumberOfSubtitles; i++)
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{
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_fs.Read(buffer, 0, 2);
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var languageTwoLetter = new string(new[] { Convert.ToChar(buffer[0]), Convert.ToChar(buffer[1]) });
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_vtsVobs.Subtitles.Add(DvdSubtitleLanguage.GetNativeLanguageName(languageTwoLetter));
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_fs.Read(buffer, 0, 2); // reserved for language code extension + code extension
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//switch (buffer[0]) // 4, 8, 10-12 unused
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//{
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// // http://dvd.sourceforge.net/dvdinfo/sprm.html
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// case 1: subtitleFormat = "(caption/normal size char)"; break; //0 = unspecified caption
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// case 2: subtitleFormat = "(caption/large size char)"; break;
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// case 3: subtitleFormat = "(caption for children)"; break;
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// case 5: subtitleFormat = "(closed caption/normal size char)"; break;
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// case 6: subtitleFormat = "(closed caption/large size char)"; break;
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// case 7: subtitleFormat = "(closed caption for children)"; break;
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// case 9: subtitleFormat = "(forced caption)"; break;
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// case 13: subtitleFormat = "(director comments/normal size char)"; break;
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// case 14: subtitleFormat = "(director comments/large size char)"; break;
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// case 15: subtitleFormat = "(director comments for children)"; break;
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//}
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_fs.Position += 2;
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}
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}
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private static int BinToInt(string p)
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{
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return Convert.ToInt32(p, 2);
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}
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private static string MidStr(string data, int start, int count)
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{
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return data.Substring(start, count);
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}
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private static string IntToBin(int value, int digits)
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{
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string result = Convert.ToString(value, 2);
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while (result.Length < digits)
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result = "0" + result;
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return result;
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}
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private int GetEndian(int count)
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{
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int result = 0;
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for (int i = count; i > 0; i--)
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{
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int b = _fs.ReadByte();
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result = (result << 8) + b;
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}
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return result;
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}
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private void ParseVtsPgci()
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{
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const int sectorSize = 2048;
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_fs.Position = 0xCC; //Get VTS_PGCI adress
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int tableStart = sectorSize * GetEndian(4);
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_fs.Position = tableStart;
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_vtsPgci.NumberOfProgramChains = GetEndian(2);
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_vtsPgci.ProgramChains = new List<ProgramChain>();
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for (int i = 0; i < _vtsPgci.NumberOfProgramChains; i++)
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{
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//Parse PGC Header
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var programChain = new ProgramChain();
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_fs.Position = tableStart + 4 + 8 * (i + 1); //Get PGC adress
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int programChainAdress = GetEndian(4);
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_fs.Position = tableStart + programChainAdress + 2; //Move to PGC
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programChain.NumberOfPgc = _fs.ReadByte();
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programChain.NumberOfCells = _fs.ReadByte();
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programChain.PlaybackTime = InterpretTime(GetEndian(4));
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_fs.Seek(4, SeekOrigin.Current);
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// check if audio streams are available for this PGC
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_fs.Position = tableStart + programChainAdress + 0xC;
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for (int j = 0; j < _vtsVobs.NumberOfAudioStreams; j++)
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{
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string temp = IntToBin(_fs.ReadByte(), 8);
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programChain.AudioStreamsAvailable.Add(temp[0]);
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_fs.Seek(1, SeekOrigin.Current);
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}
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// check if subtitles are available for this PGC
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_fs.Position = tableStart + programChainAdress + 0x1C;
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for (int j = 0; j < _vtsVobs.NumberOfSubtitles; j++)
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{
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// read and save full subpicture stream info inside program chain
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var subtitle = new byte[4];
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_fs.Read(subtitle, 0, 4);
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programChain.SubtitlesAvailable.Add(subtitle);
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}
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CalculateSubtitleTypes(programChain);
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//Parse Color LookUp Table (CLUT) - offset 00A4, 16*4 (0, Y, Cr, Cb)
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_fs.Position = tableStart + programChainAdress + 0xA4;
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for (int colorNumber = 0; colorNumber < 16; colorNumber++)
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{
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var colors = new byte[4];
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_fs.Read(colors, 0, 4);
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int y = colors[1] - 16;
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int cr = colors[2] - 128;
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int cb = colors[3] - 128;
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int r = (int)Math.Min(Math.Max(Math.Round(1.1644F * y + 1.596F * cr), 0), 255);
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int g = (int)Math.Min(Math.Max(Math.Round(1.1644F * y - 0.813F * cr - 0.391F * cb), 0), 255);
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int b = (int)Math.Min(Math.Max(Math.Round(1.1644F * y + 2.018F * cb), 0), 255);
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programChain.ColorLookupTable.Add(Color.FromArgb(r, g, b));
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}
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//Parse Program Map
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_fs.Position = tableStart + programChainAdress + 0xE6;
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_fs.Position = tableStart + programChainAdress + GetEndian(2);
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for (int j = 0; j < programChain.NumberOfPgc; j++)
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{
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programChain.PgcEntryCells.Add((byte)_fs.ReadByte());
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}
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// Cell Playback Info Table to retrieve duration
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_fs.Position = tableStart + programChainAdress + 0xE8;
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_fs.Position = tableStart + programChainAdress + GetEndian(2);
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var timeArray = new List<int>();
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for (int k = 0; k < programChain.NumberOfPgc; k++)
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{
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int time = 0;
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int max;
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if (k == programChain.NumberOfPgc - 1)
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max = programChain.NumberOfCells;
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else
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max = programChain.PgcEntryCells[k + 1] - 1;
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for (int j = programChain.PgcEntryCells[k]; j <= max; j++)
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{
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_fs.Seek(4, SeekOrigin.Current);
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time += TimeToMs(GetEndian(4));
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_fs.Seek(16, SeekOrigin.Current);
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}
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programChain.PgcPlaybackTimes.Add(MsToTime(time));
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timeArray.Add(time);
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//convert to start time
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time = 0;
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for (int l = 1; l <= k; l++)
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{
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time += timeArray[l - 1];
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}
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if (k == 0)
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programChain.PgcStartTimes.Add(MsToTime(0));
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if (k > 0)
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programChain.PgcStartTimes.Add(MsToTime(time));
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}
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_vtsPgci.ProgramChains.Add(programChain);
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}
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}
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private void CalculateSubtitleTypes(ProgramChain programChain)
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{
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// Additional Code to analyse stream bytes
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if (_vtsVobs.NumberOfSubtitles > 0)
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{
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// load the 'last' subpicture stream info,
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// because if we have more than one subtitle stream,
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// all subtitle positions > 0
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// lastSubtitle[0] is related to 4:3
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// lastSubtitle[1] is related to Wide
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// lastSubtitle[2] is related to letterboxed
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// lastSubtitle[3] is related to pan&scan
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byte[] lastSubtitle = programChain.SubtitlesAvailable[programChain.SubtitlesAvailable.Count - 1];
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int countSubs = 0;
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// set defaults for all possible subpicture types and positions
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programChain.Has43Subs = false;
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programChain.HasWideSubs = false;
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programChain.HasLetterSubs = false;
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programChain.HasPanSubs = false;
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programChain.HasNoSpecificSubs = true;
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int pos43Subs = -1;
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int posWideSubs = -1;
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int posLetterSubs = -1;
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int posPanSubs = -1;
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// parse different subtitle bytes
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if (lastSubtitle[0] > 0x80)
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{
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programChain.Has43Subs = true;
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countSubs++; // 4:3
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}
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if (lastSubtitle[1] > 0)
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{
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programChain.HasWideSubs = true;
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countSubs++; // wide
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}
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if (lastSubtitle[2] > 0)
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{
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programChain.HasLetterSubs = true;
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countSubs++; // letterboxed
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}
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if (lastSubtitle[3] > 0)
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{
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programChain.HasPanSubs = true;
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countSubs++; // pan&scan
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}
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if (countSubs == 0)
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{
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// may be, only a 4:3 stream exists
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// -> lastSubtitle[0] = 0x80
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}
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else
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{
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if (_vtsVobs.NumberOfSubtitles == 1)
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{
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// only 1 stream exists, may be letterboxed
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// if so we cound't find wide id, because lastSubtitle[1] = 0 !!
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// corresponding wide stream byte is 0 => wide id = 0x20
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// letterboxed = 0x21
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if (programChain.HasLetterSubs && !programChain.HasWideSubs)
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{
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// repair it
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programChain.HasWideSubs = true;
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}
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}
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programChain.HasNoSpecificSubs = false;
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}
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// subpucture streams start with 0x20
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int subStream = 0x20;
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// Now we know all about available subpicture streams, including position type
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// And we can create whole complete definitions for all avalable streams
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foreach (byte[] subtitle in programChain.SubtitlesAvailable)
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{
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if (programChain.HasNoSpecificSubs)
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{
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// only one unspezified subpicture stream exists
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_vtsVobs.SubtitleIDs.Add(string.Format("0x{0:x2}", subStream++));
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_vtsVobs.SubtitleTypes.Add("unspecific");
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}
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else
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{
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// read stream position for evey subtitle type from subtitle byte
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if (programChain.Has43Subs)
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{
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pos43Subs = subtitle[0] - 0x80;
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}
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if (programChain.HasWideSubs)
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{
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posWideSubs = subtitle[1];
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}
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if (programChain.HasLetterSubs)
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{
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posLetterSubs = subtitle[2];
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}
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if (programChain.HasPanSubs)
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{
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posPanSubs = subtitle[3];
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}
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// Now we can create subpicture id's and types for every stream
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// All used subpicture id's and types will beappended to string, separated by colon
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// So it's possible to split it later
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string sub = string.Empty;
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string subType = string.Empty;
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if (programChain.Has43Subs)
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{
|
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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();
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|