// http://dvd.sourceforge.net/dvdinfo/ifo.html#vidatt
public static VideoValues ReadVideoSpecs(byte b1, byte b2)
{
int byte0_high = (b1 & 0xF0) >> 4;
int byte0_low = (b1 & 0x0F);
int byte1_high = (b2 & 0xF0) >> 4;
int byte1_low = (b2 & 0x0F);
VideoValues result = new VideoValues();
result.DisallowAutoLetterbox = (byte0_low & 1) != 0;
result.DisallowAutoPanScan = (byte0_low & 2) != 0;
result.AspectRatio = (byte0_low & 0x0C) == 0 ? 1.33f : 1.78f;
if (((byte0_low & 0x0C) != 0) && ((byte0_low & 0x0C) != 0x0C))
{
throw new Exception("the aspectRatio is not valid");
}
result.Ntsc = (byte0_high & 1) == 0;
result.Pal = (byte0_high & 1) != 0;
result.Mpeg1 = (byte0_high & 0x0C) == 0;
result.Mpeg2 = (byte0_high & 0x0C) == 4;
result.Film = (byte1_low & 1) != 0;
result.LetterBoxedMode = (byte1_low & 2) != 0;
// 0 = 720x480 (720x576)
// 1 = 704x480 (704x576)
// 2 = 352x480 (352x576)
// 3 = 352x240 (352x288)
if (result.Ntsc)
{
switch ((byte1_low >> 2) & 0x03)
{
case 0: result.Resolution = new Size(720, 480); break;
case 1: result.Resolution = new Size(704, 480); break;
case 2: result.Resolution = new Size(352, 480); break;
case 3: result.Resolution = new Size(352, 240); break;
}
}
else
{
switch ((byte1_low >> 2) & 0x03)
{
case 0: result.Resolution = new Size(720, 576); break;
case 1: result.Resolution = new Size(704, 576); break;
case 2: result.Resolution = new Size(352, 576); break;
case 3: result.Resolution = new Size(352, 288); break;
}
}
result.BitRate_Vbr = (byte1_high & 1) == 0;
result.BitRate_Cbr = (byte1_high & 1) != 0;
result.CC_line21_f2 = (byte1_high & 4) != 0;
result.CC_line21_f1 = (byte1_high & 8) != 0;
return(result);
}
public static List <DVDTitle> Titles(string videoTSDir)
{
List <DVDTitle> ret = new List <DVDTitle>();
string videoIFO = Path.Combine(videoTSDir, "VIDEO_TS.IFO");
if (File.Exists(videoIFO))
{
byte[] bytRead = new byte[4];
long VMG_PTT_STPT_Position = ToFilePosition(GetFileBlock(videoIFO, 0xC4, 4));
int titlePlayMaps = ToInt16(GetFileBlock(videoIFO, VMG_PTT_STPT_Position, 2));
string longestIfo = GetLongestIFO(videoTSDir);
for (int currentTitle = 1; currentTitle <= titlePlayMaps; ++currentTitle)
{
DVDTitle title = new DVDTitle()
{
TitleNumber = currentTitle
};
long titleInfoStart = 8 + ((currentTitle - 1) * 12);
int titleSetNumber = GetFileBlock(videoIFO, (VMG_PTT_STPT_Position + titleInfoStart) + 6L, 1)[0];
int titleSetTitleNumber = IFOUtilities.GetFileBlock(videoIFO, (VMG_PTT_STPT_Position + titleInfoStart) + 7L, 1)[0];
string vtsIFO = Path.Combine(videoTSDir, string.Format("VTS_{0:D2}_0.IFO", titleSetNumber));
if (File.Exists(vtsIFO) == false)
{
Trace.WriteLine(string.Format("IFOUtils.Titles: VTS IFO file missing: {0}", Path.GetFileName(vtsIFO)));
continue;
}
byte[] b = IFOUtilities.GetFileBlock(vtsIFO, 0x200, 2);
VideoValues video = VideoValues.ReadVideoSpecs(b[0], b[1]);
title.Main = Path.GetFileName(longestIfo) == Path.GetFileName(vtsIFO);
title.File = "vts " + titleSetNumber;
title.AspectRatio = video.AspectRatio;
title.Resolution = video.Resolution;
title.Chapters = Chapters(vtsIFO, titleSetTitleNumber);
title.AudioTracks = AudioTracks(vtsIFO);
title.Subtitles = SubTitleTracks(vtsIFO);
title.Duration = DVDTitle.GetTotalTimeSpan(title.Chapters);
//if (title.Duration.TotalSeconds > 10)
ret.Add(title);
//else
// Trace.WriteLine(string.Format("IFOUtils.Titles: Duration < 10s, ignoring: {0}", Path.GetFileName(vtsIFO)));
}
}
else
{
Trace.WriteLine(string.Format("IFOUtilities.Titles: Cannot analyze DVD, file {0} not found", videoIFO));
}
return(ret);
}
// http://dvd.sourceforge.net/dvdinfo/ifo.html#vidatt
public static VideoValues ReadVideoSpecs(byte b1, byte b2)
{
int byte0_high = (b1 & 0xF0) >> 4;
int byte0_low = (b1 & 0x0F);
int byte1_high = (b2 & 0xF0) >> 4;
int byte1_low = (b2 & 0x0F);
VideoValues result = new VideoValues();
result.DisallowAutoLetterbox = (byte0_low & 1) != 0;
result.DisallowAutoPanScan = (byte0_low & 2) != 0;
result.AspectRatio = (byte0_low & 0x0C) == 0 ? 1.33f : 1.78f;
if (((byte0_low & 0x0C) != 0) && ((byte0_low & 0x0C) != 0x0C))
throw new Exception("the aspectRatio is not valid");
result.Ntsc = (byte0_high & 1) == 0;
result.Pal = (byte0_high & 1) != 0;
result.Mpeg1 = (byte0_high & 0x0C) == 0;
result.Mpeg2 = (byte0_high & 0x0C) == 4;
result.Film = (byte1_low & 1) != 0;
result.LetterBoxedMode = (byte1_low & 2) != 0;
// 0 = 720x480 (720x576)
// 1 = 704x480 (704x576)
// 2 = 352x480 (352x576)
// 3 = 352x240 (352x288)
if (result.Ntsc)
switch ((byte1_low >> 2) & 0x03)
{
case 0: result.Resolution = new Size(720, 480); break;
case 1: result.Resolution = new Size(704, 480); break;
case 2: result.Resolution = new Size(352, 480); break;
case 3: result.Resolution = new Size(352, 240); break;
}
else
switch ((byte1_low >> 2) & 0x03)
{
case 0: result.Resolution = new Size(720, 576); break;
case 1: result.Resolution = new Size(704, 576); break;
case 2: result.Resolution = new Size(352, 576); break;
case 3: result.Resolution = new Size(352, 288); break;
}
result.BitRate_Vbr = (byte1_high & 1) == 0;
result.BitRate_Cbr = (byte1_high & 1) != 0;
result.CC_line21_f2 = (byte1_high & 4) != 0;
result.CC_line21_f1 = (byte1_high & 8) != 0;
return result;
}
