SubtitleEdit/libse/TransportStream/ClutDefinitionSegment.cs
2016-01-24 16:49:03 +02:00

50 lines
1.9 KiB
C#

using System.Collections.Generic;
namespace Nikse.SubtitleEdit.Core.TransportStream
{
public class ClutDefinitionSegment
{
public int ClutId { get; set; }
public int ClutVersionNumber { get; set; }
public List<RegionClutSegmentEntry> Entries = new List<RegionClutSegmentEntry>();
public ClutDefinitionSegment(byte[] buffer, int index, int segmentLength)
{
Entries = new List<RegionClutSegmentEntry>();
ClutId = buffer[index];
ClutVersionNumber = buffer[index + 1] >> 4;
int k = index + 2;
while (k + 6 <= index + segmentLength)
{
var rcse = new RegionClutSegmentEntry();
rcse.ClutEntryId = buffer[k];
byte flags = buffer[k + 1];
rcse.ClutEntry2BitClutEntryFlag = (flags & Helper.B10000000) > 0;
rcse.ClutEntry4BitClutEntryFlag = (flags & Helper.B01000000) > 0;
rcse.ClutEntry8BitClutEntryFlag = (flags & Helper.B00100000) > 0;
rcse.FullRangeFlag = (flags & Helper.B00000001) > 0;
if (rcse.FullRangeFlag)
{
rcse.ClutEntryY = buffer[k + 2];
rcse.ClutEntryCr = buffer[k + 3];
rcse.ClutEntryCb = buffer[k + 4];
rcse.ClutEntryT = buffer[k + 5];
k += 6;
}
else
{
rcse.ClutEntryY = buffer[k + 2] >> 2;
rcse.ClutEntryCr = ((buffer[k + 2] & Helper.B00000011) << 2) + (buffer[k + 2]) >> 6;
rcse.ClutEntryCb = ((buffer[k + 3] & Helper.B00111111) >> 2);
rcse.ClutEntryT = buffer[k + 3] & Helper.B00000011;
k += 4;
}
Entries.Add(rcse);
}
}
}
}