/// <summary>
/// Create a new program instance.
/// </summary>
/// <param name="table">The related <see cref="Tables.PMT"/> table.</param>
/// <param name="offset">The first byte of this program in the <see cref="EPG.Table.Section"/>
/// for the related <see cref="Table"/>.</param>
/// <param name="length">The maximum number of bytes available. If this number
/// is greater than the <see cref="Length"/> of this program another event will
/// follow in the same table.</param>
internal ProgramEntry(Table table, int offset, int length)
: base(table)
{
// Access section
Section section = Section;
// Load
ElementaryPID = (ushort)(0x1fff & Tools.MergeBytesToWord(section[offset + 2], section[offset + 1]));
StreamType = (StreamTypes)section[offset + 0];
// Read the length
int descrLength = 0xfff & Tools.MergeBytesToWord(section[offset + 4], section[offset + 3]);
// Caluclate the total length
Length = 5 + descrLength;
// Verify
if (Length > length)
{
return;
}
// Try to load descriptors
Descriptors = Descriptor.Load(this, offset + 5, descrLength);
// Can use it
IsValid = true;
}
/// <summary>
/// Create a new service instance.
/// </summary>
/// <param name="table">The related <see cref="Tables.SDT"/> table.</param>
/// <param name="offset">The first byte of this service in the <see cref="EPG.Table.Section"/>
/// for the related <see cref="Table"/>.</param>
/// <param name="length">The maximum number of bytes available. If this number
/// is greater than the <see cref="Length"/> of this service another event will
/// follow in the same table.</param>
internal ServiceEntry(Table table, int offset, int length)
: base(table)
{
// Access section
Section section = Section;
// Read statics
ServiceIdentifier = Tools.MergeBytesToWord(section[offset + 1], section[offset + 0]);
Scrambled = (0 != (section[offset + 3] & 0x10));
// Decode
int highLoop = section[offset + 3] & 0xf;
int lowLoop = section[offset + 4];
// Number of descriptors
int loop = lowLoop + 256 * highLoop;
// Caluclate the total length
Length = 5 + loop;
// Verify
if (Length > length)
{
return;
}
// Try to load descriptors
Descriptors = Descriptor.Load(this, offset + 5, loop);
// Can use it
IsValid = true;
}