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 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);
}
}
public IFOParse(string filename)
{
m_file = new FileInfo(filename);
FileStream fs = File.OpenRead(filename);
try
{
#region Header
// verify valid video IFO header
byte[] id = new byte[12];
if (fs.Read(id, 0, 12) != 12)
{
throw new IOException("Error reading IFO file");
}
string idStr = Encoding.ASCII.GetString(id, 0, 12);
if (idStr != "DVDVIDEO-VTS")
{
throw new Exception("Invalid IFO Header");
}
#endregion
#region Version
// verify IFO version (1.0 or 1.1)
if (fs.Seek(0x21, SeekOrigin.Begin) != 0x21)
{
throw new IOException("Error reading IFO file");
}
byte[] version = new byte[1];
if (fs.Read(version, 0, 1) != 1)
{
throw new IOException("Error reading IFO file");
}
if (version[0] != 0x10 && version[0] != 0x11)
{
throw new Exception("Invalid IFO Header Version");
}
#endregion
#region PGC Info
// find offset to pgc tables
if (fs.Seek(0xcc, SeekOrigin.Begin) != 0xcc)
{
throw new IOException("Error reading IFO file");
}
byte[] pgcOffsetData = new byte[4];
if (fs.Read(pgcOffsetData, 0, 4) != 4)
{
throw new IOException("Error reading IFO file");
}
int pgcOffset = (pgcOffsetData[0] << 24) + (pgcOffsetData[1] << 16) + (pgcOffsetData[2] << 8) + pgcOffsetData[3];
// get count of pgcs
if (fs.Seek(pgcOffset * 2048, SeekOrigin.Begin) != pgcOffset * 2048)
{
throw new IOException("Error reading IFO file");
}
byte[] pgciData = new byte[2];
if (fs.Read(pgciData, 0, 2) != 2)
{
throw new IOException("Error reading IFO file");
}
int pgcCount = (pgciData[0] << 8) + pgciData[1];
for (int i = 1; i <= pgcCount; i++)
{
ProgramChain pgc = new ProgramChain(this);
// get pgc's info offset within pgc (length is 4 bytes into pgc info)
if (fs.Seek((pgcOffset * 2048) + (i * 8) + 4, SeekOrigin.Begin) != (pgcOffset * 2048) + (i * 8) + 4)
{
throw new IOException("Error reading IFO file");
}
byte[] pgcStartData = new byte[4];
if (fs.Read(pgcStartData, 0, 4) != 4)
{
throw new IOException("Error reading IFO file");
}
int pgcStart = (pgcStartData[0] << 24) + (pgcStartData[1] << 16) + (pgcStartData[2] << 8) + pgcStartData[3];
// get pgc's playback time
if (fs.Seek((pgcOffset * 2048) + pgcStart + 4, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 4)
{
throw new IOException("Error reading IFO file");
}
byte[] playbackTimeData = new byte[4];
if (fs.Read(playbackTimeData, 0, 4) != 4)
{
throw new IOException("Error reading IFO file");
}
// frame rate
int frameRate = (playbackTimeData[3] & 0xC0) >> 6;
if (frameRate == 3)
{
pgc.FrameRate = 30;
}
else if (frameRate == 1)
{
pgc.FrameRate = 25;
}
// duration
int playbackTime = (playbackTimeData[0] << 24) + (playbackTimeData[1] << 16) + (playbackTimeData[2] << 8) + playbackTimeData[3];
int hour = ((playbackTime >> 28) & 0x0f) * 10 + ((playbackTime >> 24) & 0x0f);
int min = ((playbackTime >> 20) & 0x0f) * 10 + ((playbackTime >> 16) & 0x0f);
int sec = ((playbackTime >> 12) & 0x0f) * 10 + ((playbackTime >> 8) & 0x0f);
int frame = (((playbackTime >> 4) & 0x0f) * 10 + (playbackTime & 0x0f)) - 120;
pgc.Duration = hour * 3600 + min * 60 + sec;
pgc.PartialFrames = frame;
// get pgc's cell playback info table
if (fs.Seek((pgcOffset * 2048) + pgcStart + 0xE8, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 0xE8)
{
throw new IOException("Error reading IFO file");
}
byte[] C_PBKT_buf = new byte[2];
if (fs.Read(C_PBKT_buf, 0, 2) != 2)
{
throw new IOException("Error reading IFO file");
}
int C_PBKT = (C_PBKT_buf[0] << 8) + C_PBKT_buf[1];
if (C_PBKT != 0)
{
C_PBKT += (pgcOffset * 2048) + pgcStart;
}
// get pgc's cell position info table
if (fs.Seek((pgcOffset * 2048) + pgcStart + 0xEA, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 0xEA)
{
throw new IOException("Error reading IFO file");
}
byte[] C_POST_buf = new byte[2];
if (fs.Read(C_POST_buf, 0, 2) != 2)
{
throw new IOException("Error reading IFO file");
}
int C_POST = (C_POST_buf[0] << 8) + C_POST_buf[1];
if (C_POST != 0)
{
C_POST += (pgcOffset * 2048) + pgcStart;
}
// get pgc's number of cells
if (fs.Seek((pgcOffset * 2048) + pgcStart + 3, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 3)
{
throw new IOException("Error reading IFO file");
}
byte[] nCells_buf = new byte[1];
if (fs.Read(nCells_buf, 0, 1) != 1)
{
throw new IOException("Error reading IFO file");
}
int nCells = nCells_buf[0];
int nAngles = 1;
if (C_POST != 0 && C_PBKT != 0)
{
for (int nCell = 0; nCell < nCells; nCell++)
{
Cell c = new Cell();
// get info for cell
/*if (fs.Seek(C_PBKT + 24 * nCell, SeekOrigin.Begin) != C_PBKT + 24 * nCell)
* throw new IOException("Error reading IFO file");
* byte[] iCat_buf = new byte[1];
* if (fs.Read(iCat_buf, 0, 1) != 1)
* throw new IOException("Error reading IFO file");
*
* // ignore multi-angle
* int iCat = iCat_buf[0] & 0xF10;
* // 0101=First; 1001=Middle ; 1101=Last
* if (iCat == 0x50)
* nAngles = 1;
* else if (iCat == 0x90)
* nAngles++;
* else if (iCat == 0xD0)
* {
* nAngles++;
* break;
* }*/
#region read duration
if (fs.Seek(C_PBKT + 24 * nCell + 4, SeekOrigin.Begin) != C_PBKT + 24 * nCell + 4)
{
throw new IOException("Error reading IFO file");
}
playbackTimeData = new byte[4];
if (fs.Read(playbackTimeData, 0, 4) != 4)
{
throw new IOException("Error reading IFO file");
}
playbackTime = (playbackTimeData[0] << 24) + (playbackTimeData[1] << 16) + (playbackTimeData[2] << 8) + playbackTimeData[3];
hour = ((playbackTime >> 28) & 0x0f) * 10 + ((playbackTime >> 24) & 0x0f);
min = ((playbackTime >> 20) & 0x0f) * 10 + ((playbackTime >> 16) & 0x0f);
sec = ((playbackTime >> 12) & 0x0f) * 10 + ((playbackTime >> 8) & 0x0f);
frame = (((playbackTime >> 4) & 0x0f) * 10 + (playbackTime & 0x0f)) - 120;
c.Duration = hour * 3600 + min * 60 + sec;
c.PartialFrames = frame;
#endregion
#region entry point
if (fs.Seek(C_PBKT + 24 * nCell + 8, SeekOrigin.Begin) != C_PBKT + 24 * nCell + 8)
{
throw new IOException("Error reading IFO file");
}
byte[] entryPointBuf = new byte[4];
if (fs.Read(entryPointBuf, 0, 4) != 4)
{
throw new IOException("Error reading IFO file");
}
c.FirstSector = (entryPointBuf[0] << 24) + (entryPointBuf[1] << 16) + (entryPointBuf[2] << 8) + entryPointBuf[3];
#endregion
#region last sector
if (fs.Seek(C_PBKT + 24 * nCell + 20, SeekOrigin.Begin) != C_PBKT + 24 * nCell + 20)
{
throw new IOException("Error reading IFO file");
}
byte[] lastSectorBuf = new byte[4];
if (fs.Read(lastSectorBuf, 0, 4) != 4)
{
throw new IOException("Error reading IFO file");
}
c.LastSector = (lastSectorBuf[0] << 24) + (lastSectorBuf[1] << 16) + (lastSectorBuf[2] << 8) + lastSectorBuf[3];
#endregion
if (fs.Seek(C_POST + 4 * nCell, SeekOrigin.Begin) != C_POST + 4 * nCell)
{
throw new IOException("Error reading IFO file");
}
byte[] vobIDBuf = new byte[2];
if (fs.Read(vobIDBuf, 0, 2) != 2)
{
throw new IOException("Error reading IFO file");
}
c.VobID = (vobIDBuf[0] << 8) + vobIDBuf[1];
if (fs.Seek(C_POST + 4 * nCell + 3, SeekOrigin.Begin) != C_POST + 4 * nCell + 3)
{
throw new IOException("Error reading IFO file");
}
byte[] cellIDBuf = new byte[1];
if (fs.Read(cellIDBuf, 0, 1) != 1)
{
throw new IOException("Error reading IFO file");
}
c.CellID = cellIDBuf[0];
pgc.Cells.Add(c);
}
}
pgc.Angles = nAngles;
m_pgcs.Add(pgc);
}
#endregion
#region Video
if (fs.Seek(0x200, SeekOrigin.Begin) != 0x200)
{
throw new IOException("Error reading IFO file");
}
byte[] videoAttributes = new byte[2];
if (fs.Read(videoAttributes, 0, 2) != 2)
{
throw new IOException("Error reading IFO file");
}
byte va1 = videoAttributes[0];
byte va2 = videoAttributes[1];
// video mode
if (((va1 & 0x30) >> 4) == 0)
{
m_videoMode = "NTSC";
}
else if (((va1 & 0x30) >> 4) == 1)
{
m_videoMode = "PAL";
}
// aspect
if (((va1 & 0xC) >> 2) == 0)
{
m_aspectRatio = "4:3";
}
else if (((va1 & 0xC) >> 2) == 3)
{
m_aspectRatio = "16:9";
}
// resolution
int resolution = ((va2 & 0x38) >> 3);
switch (resolution)
{
case 0:
m_resolution = "720x480";
break;
case 1:
m_resolution = "704x480";
break;
case 2:
m_resolution = "352x480";
break;
case 3:
m_resolution = "352x240";
break;
}
#endregion
#region Audio
// http://dvd.sourceforge.net/dvdinfo/ifo.html
// find count of audio streams
if (fs.Seek(0x203, SeekOrigin.Begin) != 0x203)
{
throw new IOException("Error reading IFO file");
}
byte[] numAudio = new byte[1];
if (fs.Read(numAudio, 0, 1) != 1)
{
throw new IOException("Error reading IFO file");
}
m_numAudio = numAudio[0];
for (int i = 0; i < m_numAudio; i++)
{
byte[] audioFormatData = new byte[8];
if (fs.Read(audioFormatData, 0, 8) != 8)
{
throw new IOException("Error reading IFO file");
}
// check if the language is 'specified'
string lang = "";
if (((audioFormatData[0] & 0xC) >> 2) > 0)
{
// extract the two character ASCII code for the language
char langID1 = (char)audioFormatData[2];
char langID2 = (char)audioFormatData[3];
lang = String.Format("{0}{1}", (char)audioFormatData[2], (char)audioFormatData[3]);
// translate some language codes
//http://www.dvd-replica.com/DVD/vtslanguage.php
if (lang == "en")
{
lang = "English";
}
else if (lang == "es")
{
lang = "Spanish";
}
else if (lang == "fr")
{
lang = "French";
}
else if (lang == "ja")
{
lang = "Japanese";
}
else if (lang == "ar")
{
lang = "Arabic";
}
else if (lang == "no")
{
lang = "Norwegian";
}
else if (lang == "pl")
{
lang = "Polish";
}
else if (lang == "km")
{
lang = "Cambodian";
}
else if (lang == "pt")
{
lang = "Portuguese";
}
else if (lang == "zh")
{
lang = "Chinese";
}
else if (lang == "ro")
{
lang = "Romanian";
}
else if (lang == "ru")
{
lang = "Russian";
}
else if (lang == "cs")
{
lang = "Czech";
}
else if (lang == "da")
{
lang = "Danish";
}
else if (lang == "nl")
{
lang = "Dutch";
}
else if (lang == "sa")
{
lang = "Sanskrit";
}
else if (lang == "eo")
{
lang = "Esperanto";
}
else if (lang == "fi")
{
lang = "Finnish";
}
else if (lang == "de")
{
lang = "German";
}
else if (lang == "el")
{
lang = "Greek";
}
else if (lang == "sw")
{
lang = "Swahili";
}
else if (lang == "sv")
{
lang = "Swedish";
}
else if (lang == "iw")
{
lang = "Hebrew";
}
else if (lang == "hi")
{
lang = "Hindi";
}
else if (lang == "th")
{
lang = "Thai";
}
else if (lang == "ga")
{
lang = "Irish";
}
else if (lang == "it")
{
lang = "Italian";
}
else if (lang == "vi")
{
lang = "Vietnamese";
}
else if (lang == "ko")
{
lang = "Korean";
}
else if (lang == "ji")
{
lang = "Yiddish";
}
else if (lang == "la")
{
lang = "Latin";
}
else if (audioFormatData[2] == 0)
{
lang = "";
}
int audioType = audioFormatData[5];
switch (audioType)
{
case 0:
case 1:
case 2: //for visually impaired
break;
case 3: //director's comments
case 4: //alt. director's comments
lang += "/c";
break;
}
}
// display the number of channels in the audio stream
int channels = (audioFormatData[1] & 0x7) + 1;
if (lang != "")
{
lang += " ";
}
lang += String.Format("{0}ch", channels);
// find the format for the stream and add it to the format list if it is supported
int audioFormat = (audioFormatData[0] & 0xe0) >> 5;
switch (audioFormat)
{
case 0:
m_audioFormat.Add(new AudioFormatDetails("AC3", lang, 0x80 + i));
break;
case 2:
m_audioFormat.Add(new AudioFormatDetails("MPEG1", lang, 0xC0 + i));
break;
case 4:
m_audioFormat.Add(new AudioFormatDetails("LPCM", lang, 0xA0 + i));
break;
case 6: // DTS
case 3: // MPEG 2
default:
// ignore other stream types (don't add to the list)
//throw new IOException("This DVD contains an unsupported audio type");
//m_audioFormat.Add(new AudioFormatDetails("DTS", lang, 0x88 + i));
break;
}
}
#endregion
#region VOB File info
// VTS_##_0.IFO -> VTS_##_1.VOB
string vobFile = filename.Replace("0.IFO", "1.VOB");
int idx = vobFile.LastIndexOf("_");
if (idx == -1)
{
// got a straight vob file like "TRAILER.VOB"
VOB v = new VOB(filename.ToUpper().Replace("IFO", "VOB"));
m_vobs.Add(v);
}
else
{
string vobBase = "";
int vobNum = 0;
long nextSectors = 0;
// extract the VOB index # into vobNum
// vobBase will contain the title's index
vobBase = vobFile.Substring(0, idx); // up to last _
vobNum = Convert.ToInt32(vobFile.Substring(idx + 1, 1));
if (vobNum == 0)
{
vobNum++;
}
while (true)
{
vobFile = vobBase + "_" + vobNum.ToString("0") + ".VOB";
vobNum++;
if (File.Exists(vobFile) == false)
{
break;
}
VOB v = new VOB(vobFile);
v.FirstSector = nextSectors;
nextSectors += v.Sectors;
m_vobs.Add(v);
}
}
#endregion
}
finally
{
fs.Close();
}
}
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 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);
}
}
public IFOParse(string filename)
{
m_file = new FileInfo(filename);
FileStream fs = File.OpenRead(filename);
try
{
#region Header
// verify valid video IFO header
byte[] id = new byte[12];
if(fs.Read(id, 0, 12) != 12)
throw new IOException("Error reading IFO file");
string idStr = Encoding.ASCII.GetString(id, 0, 12);
if(idStr != "DVDVIDEO-VTS")
throw new Exception("Invalid IFO Header");
#endregion
#region Version
// verify IFO version (1.0 or 1.1)
if(fs.Seek(0x21, SeekOrigin.Begin) != 0x21)
throw new IOException("Error reading IFO file");
byte[] version = new byte[1];
if(fs.Read(version, 0, 1) != 1)
throw new IOException("Error reading IFO file");
if(version[0] != 0x10 && version[0] != 0x11)
throw new Exception("Invalid IFO Header Version");
#endregion
#region PGC Info
// find offset to pgc tables
if(fs.Seek(0xcc, SeekOrigin.Begin) != 0xcc)
throw new IOException("Error reading IFO file");
byte[] pgcOffsetData = new byte[4];
if(fs.Read(pgcOffsetData, 0, 4) != 4)
throw new IOException("Error reading IFO file");
int pgcOffset = (pgcOffsetData[0] << 24) + (pgcOffsetData[1] << 16) + (pgcOffsetData[2] << 8) + pgcOffsetData[3];
// get count of pgcs
if(fs.Seek(pgcOffset * 2048, SeekOrigin.Begin) != pgcOffset * 2048)
throw new IOException("Error reading IFO file");
byte[] pgciData = new byte[2];
if(fs.Read(pgciData, 0, 2) != 2)
throw new IOException("Error reading IFO file");
int pgcCount = (pgciData[0] << 8) + pgciData[1];
for (int i = 1; i <= pgcCount; i++)
{
ProgramChain pgc = new ProgramChain(this);
// get pgc's info offset within pgc (length is 4 bytes into pgc info)
if(fs.Seek((pgcOffset * 2048) + (i * 8) + 4, SeekOrigin.Begin) != (pgcOffset * 2048) + (i * 8) + 4)
throw new IOException("Error reading IFO file");
byte[] pgcStartData = new byte[4];
if(fs.Read(pgcStartData, 0, 4) != 4)
throw new IOException("Error reading IFO file");
int pgcStart = (pgcStartData[0] << 24) + (pgcStartData[1] << 16) + (pgcStartData[2] << 8) + pgcStartData[3];
// get pgc's playback time
if(fs.Seek((pgcOffset * 2048) + pgcStart + 4, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 4)
throw new IOException("Error reading IFO file");
byte[] playbackTimeData = new byte[4];
if(fs.Read(playbackTimeData, 0, 4) != 4)
throw new IOException("Error reading IFO file");
// frame rate
int frameRate = (playbackTimeData[3] & 0xC0) >> 6;
if(frameRate == 3)
pgc.FrameRate = 30;
else if(frameRate == 1)
pgc.FrameRate = 25;
// duration
int playbackTime = (playbackTimeData[0] << 24) + (playbackTimeData[1] << 16) + (playbackTimeData[2] << 8) + playbackTimeData[3];
int hour = ((playbackTime >> 28) & 0x0f) * 10 + ((playbackTime >> 24) & 0x0f);
int min = ((playbackTime >> 20) & 0x0f) * 10 + ((playbackTime >> 16) & 0x0f);
int sec = ((playbackTime >> 12) & 0x0f) * 10 + ((playbackTime >> 8) & 0x0f);
int frame = (((playbackTime >> 4) & 0x0f) * 10 + (playbackTime & 0x0f)) - 120;
pgc.Duration = hour * 3600 + min * 60 + sec;
pgc.PartialFrames = frame;
// get pgc's cell playback info table
if (fs.Seek((pgcOffset * 2048) + pgcStart + 0xE8, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 0xE8)
throw new IOException("Error reading IFO file");
byte[] C_PBKT_buf = new byte[2];
if (fs.Read(C_PBKT_buf, 0, 2) != 2)
throw new IOException("Error reading IFO file");
int C_PBKT = (C_PBKT_buf[0] << 8) + C_PBKT_buf[1];
if (C_PBKT != 0)
C_PBKT += (pgcOffset * 2048) + pgcStart;
// get pgc's cell position info table
if (fs.Seek((pgcOffset * 2048) + pgcStart + 0xEA, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 0xEA)
throw new IOException("Error reading IFO file");
byte[] C_POST_buf = new byte[2];
if (fs.Read(C_POST_buf, 0, 2) != 2)
throw new IOException("Error reading IFO file");
int C_POST = (C_POST_buf[0] << 8) + C_POST_buf[1];
if (C_POST != 0)
C_POST += (pgcOffset * 2048) + pgcStart;
// get pgc's number of cells
if (fs.Seek((pgcOffset * 2048) + pgcStart + 3, SeekOrigin.Begin) != (pgcOffset * 2048) + pgcStart + 3)
throw new IOException("Error reading IFO file");
byte[] nCells_buf = new byte[1];
if (fs.Read(nCells_buf, 0, 1) != 1)
throw new IOException("Error reading IFO file");
int nCells = nCells_buf[0];
int nAngles = 1;
if (C_POST != 0 && C_PBKT != 0)
{
for (int nCell = 0; nCell < nCells; nCell++)
{
Cell c = new Cell();
// get info for cell
/*if (fs.Seek(C_PBKT + 24 * nCell, SeekOrigin.Begin) != C_PBKT + 24 * nCell)
throw new IOException("Error reading IFO file");
byte[] iCat_buf = new byte[1];
if (fs.Read(iCat_buf, 0, 1) != 1)
throw new IOException("Error reading IFO file");
// ignore multi-angle
int iCat = iCat_buf[0] & 0xF10;
// 0101=First; 1001=Middle ; 1101=Last
if (iCat == 0x50)
nAngles = 1;
else if (iCat == 0x90)
nAngles++;
else if (iCat == 0xD0)
{
nAngles++;
break;
}*/
#region read duration
if (fs.Seek(C_PBKT + 24 * nCell + 4, SeekOrigin.Begin) != C_PBKT + 24 * nCell + 4)
throw new IOException("Error reading IFO file");
playbackTimeData = new byte[4];
if (fs.Read(playbackTimeData, 0, 4) != 4)
throw new IOException("Error reading IFO file");
playbackTime = (playbackTimeData[0] << 24) + (playbackTimeData[1] << 16) + (playbackTimeData[2] << 8) + playbackTimeData[3];
hour = ((playbackTime >> 28) & 0x0f) * 10 + ((playbackTime >> 24) & 0x0f);
min = ((playbackTime >> 20) & 0x0f) * 10 + ((playbackTime >> 16) & 0x0f);
sec = ((playbackTime >> 12) & 0x0f) * 10 + ((playbackTime >> 8) & 0x0f);
frame = (((playbackTime >> 4) & 0x0f) * 10 + (playbackTime & 0x0f)) - 120;
c.Duration = hour * 3600 + min * 60 + sec;
c.PartialFrames = frame;
#endregion
#region entry point
if (fs.Seek(C_PBKT + 24 * nCell + 8, SeekOrigin.Begin) != C_PBKT + 24 * nCell + 8)
throw new IOException("Error reading IFO file");
byte[] entryPointBuf = new byte[4];
if (fs.Read(entryPointBuf, 0, 4) != 4)
throw new IOException("Error reading IFO file");
c.FirstSector = (entryPointBuf[0] << 24) + (entryPointBuf[1] << 16) + (entryPointBuf[2] << 8) + entryPointBuf[3];
#endregion
#region last sector
if (fs.Seek(C_PBKT + 24 * nCell + 20, SeekOrigin.Begin) != C_PBKT + 24 * nCell + 20)
throw new IOException("Error reading IFO file");
byte[] lastSectorBuf = new byte[4];
if (fs.Read(lastSectorBuf, 0, 4) != 4)
throw new IOException("Error reading IFO file");
c.LastSector = (lastSectorBuf[0] << 24) + (lastSectorBuf[1] << 16) + (lastSectorBuf[2] << 8) + lastSectorBuf[3];
#endregion
if (fs.Seek(C_POST + 4 * nCell, SeekOrigin.Begin) != C_POST + 4 * nCell)
throw new IOException("Error reading IFO file");
byte[] vobIDBuf = new byte[2];
if (fs.Read(vobIDBuf, 0, 2) != 2)
throw new IOException("Error reading IFO file");
c.VobID = (vobIDBuf[0] << 8) + vobIDBuf[1];
if (fs.Seek(C_POST + 4 * nCell + 3, SeekOrigin.Begin) != C_POST + 4 * nCell + 3)
throw new IOException("Error reading IFO file");
byte[] cellIDBuf = new byte[1];
if (fs.Read(cellIDBuf, 0, 1) != 1)
throw new IOException("Error reading IFO file");
c.CellID = cellIDBuf[0];
pgc.Cells.Add(c);
}
}
pgc.Angles = nAngles;
m_pgcs.Add(pgc);
}
#endregion
#region Video
if(fs.Seek(0x200, SeekOrigin.Begin) != 0x200)
throw new IOException("Error reading IFO file");
byte[] videoAttributes = new byte[2];
if(fs.Read(videoAttributes, 0, 2) != 2)
throw new IOException("Error reading IFO file");
byte va1 = videoAttributes[0];
byte va2 = videoAttributes[1];
// video mode
if(((va1 & 0x30) >> 4) == 0)
m_videoMode = "NTSC";
else if(((va1 & 0x30) >> 4) == 1)
m_videoMode = "PAL";
// aspect
if(((va1 & 0xC) >> 2) == 0)
m_aspectRatio = "4:3";
else if(((va1 & 0xC) >> 2) == 3)
m_aspectRatio = "16:9";
// resolution
int resolution = ((va2 & 0x38) >> 3);
switch(resolution)
{
case 0:
m_resolution = "720x480";
break;
case 1:
m_resolution = "704x480";
break;
case 2:
m_resolution = "352x480";
break;
case 3:
m_resolution = "352x240";
break;
}
#endregion
#region Audio
// find count of audio streams
if(fs.Seek(0x203, SeekOrigin.Begin) != 0x203)
throw new IOException("Error reading IFO file");
byte[] numAudio = new byte[1];
if(fs.Read(numAudio, 0, 1) != 1)
throw new IOException("Error reading IFO file");
m_numAudio = numAudio[0];
byte[] audioFormatData = new byte[1];
if(fs.Read(audioFormatData, 0, 1) != 1)
throw new IOException("Error reading IFO file");
int audioFormat = (audioFormatData[0] & 0xe0) >> 5;
switch(audioFormat)
{
case 0:
m_audioFormat = "AC3";
break;
case 2:
m_audioFormat = "MPEG1";
break;
case 3:
m_audioFormat = "MPEG2";
break;
case 4:
m_audioFormat = "LPCM";
break;
case 6:
m_audioFormat = "DTS";
break;
}
#endregion
#region VOB File info
// VTS_##_0.IFO -> VTS_##_1.VOB
string vobFile = filename.Replace("0.IFO", "1.VOB");
int idx = vobFile.LastIndexOf("_");
if (idx == -1)
{
// got a straight vob file like "TRAILER.VOB"
VOB v = new VOB(filename.ToUpper().Replace("IFO", "VOB"));
m_vobs.Add(v);
}
else
{
string vobBase = "";
int vobNum = 0;
long nextSectors = 0;
// extract the VOB index # into vobNum
// vobBase will contain the title's index
vobBase = vobFile.Substring(0, idx); // up to last _
vobNum = Convert.ToInt32(vobFile.Substring(idx + 1, 1));
if (vobNum == 0)
vobNum++;
while (true)
{
vobFile = vobBase + "_" + vobNum.ToString("0") + ".VOB";
vobNum++;
if (File.Exists(vobFile) == false)
break;
VOB v = new VOB(vobFile);
v.FirstSector = nextSectors;
nextSectors += v.Sectors;
m_vobs.Add(v);
}
}
#endregion
}
finally
{
fs.Close();
}
}