internal void ParseHeader(BinaryReader br)
{
long startPos = br.BaseStream.Position;
br.ReadUInt16();
_programCount = br.ReadByte();
_cellCount = br.ReadByte();
PlaybackTime = new DvdTime(br.ReadBytes(4));
ProhibitedUserOperations = (UserOperation)br.ReadUInt32();
AudioStreamControl = br.ReadBytes(16);
SubpictureStreamControl = br.ReadBytes(128);
_nextProgramNumber = br.ReadUInt16();
_prevProgramNumber = br.ReadUInt16();
_goupProgramNumber = br.ReadUInt16();
StillTime = br.ReadByte();
byte pbMode = br.ReadByte();
if (pbMode == 0)
{
PlaybackMode = ProgramPlaybackMode.Sequential;
}
else
{
PlaybackMode = ((pbMode & 0x80) == 0) ? ProgramPlaybackMode.Random : ProgramPlaybackMode.Shuffle;
}
ProgramCount = (uint)(pbMode & 0x7F);
Palette = br.ReadBytes(64);
_commandTableOffset = br.ReadUInt16();
_programMapOffset = br.ReadUInt16();
_cellPlaybackOffset = br.ReadUInt16();
_cellPositionOffset = br.ReadUInt16();
// read position info
br.BaseStream.Seek(startPos + _cellPositionOffset, SeekOrigin.Begin);
for (int cellNum = 0; cellNum < _cellCount; cellNum++)
{
Cell c = new Cell();
c.ParsePosition(br);
Cells.Add(c);
}
br.BaseStream.Seek(startPos + _cellPlaybackOffset, SeekOrigin.Begin);
for (int cellNum = 0; cellNum < _cellCount; cellNum++)
{
Cells[cellNum].ParsePlayback(br);
}
br.BaseStream.Seek(startPos + _programMapOffset, SeekOrigin.Begin);
List <int> cellNumbers = new List <int>();
for (int progNum = 0; progNum < _programCount; progNum++)
{
cellNumbers.Add(br.ReadByte() - 1);
}
for (int i = 0; i < cellNumbers.Count; i++)
{
int max = (i + 1 == cellNumbers.Count) ? _cellCount : cellNumbers[i + 1];
Programs.Add(new Program(Cells.Where((c, idx) => idx >= cellNumbers[i] && idx < max).ToList()));
}
}
internal CellPlaybackInfo(BinaryReader br)
{
br.BaseStream.Seek(0x4, SeekOrigin.Current);
PlaybackTime = new DvdTime(br.ReadBytes(4));
br.BaseStream.Seek(0x10, SeekOrigin.Current);
}
