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Work on mcc

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This commit is contained in:
Nikolaj Olsson 2021-03-27 19:09:05 +01:00
parent 36ff0bc959
commit 97e5a93d2d
3 changed files with 8 additions and 9 deletions
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11
src/libse/Cea708/CcDataSection.cs
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@ -41,12 +41,12 @@ namespace Nikse.SubtitleEdit.Core.Cea708
}
}
public CcDataSection(int ccDataCount, byte[] bytes)
public CcDataSection(int ccDataCount, byte[] bytes, int sequenceCount)
{
DataSection = 0x72;
ProcessEmData = true;
ProcessEmData = true;
ProcessEmData = true;
ProcessCcData = true;
AdditionalData = true;
if (bytes.Length / 2 > 16)
{
@ -80,11 +80,14 @@ namespace Nikse.SubtitleEdit.Core.Cea708
}
else if (i == 2)
{
var rollingSequence = sequenceCount % 4; // rolling sequence 0-3
var ccContentLength = bytes.Length / 2 + 2;
var x = (byte)((rollingSequence << 6) + ccContentLength);
CcData[i] = new CcData
{
Valid = true,
Type = 3,
Data1 = 0x0b,
Data1 = (byte)x,
Data2 = 0x33,
};
}

2
src/libse/Cea708/Smpte291M.cs
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@ -62,7 +62,7 @@ namespace Nikse.SubtitleEdit.Core.Cea708
CaptionDistributionPacketHeaderSequenceCounter = sequenceCount;
CaptionDistributionPacketHeaderSequenceCounter2 = sequenceCount;
CcDataSectionCcData = new CcDataSection(ccDataCount, bytes);
CcDataSectionCcData = new CcDataSection(ccDataCount, bytes, sequenceCount);
CcServiceInfoSection = new CcServiceInfoSection();
}

4
src/libse/Cea708/VancDataWriter.cs
View File

@ -32,10 +32,6 @@ namespace Nikse.SubtitleEdit.Core.Cea708
{
var bytes = new List<byte>();
var smpte291M = new Smpte291M(counter, 20, bytes.ToArray());
smpte291M.CcDataSectionCcData.CcData[2].Valid = false;
smpte291M.CcDataSectionCcData.CcData[2].Type = 2;
smpte291M.CcDataSectionCcData.CcData[2].Data1 = 0;
smpte291M.CcDataSectionCcData.CcData[2].Data2 = 0;
var resultBytes = smpte291M.GetBytes();
var hex = ByteArrayToHexString(resultBytes);
return hex;