public Smpte291M(byte[] bytes)
{
DataId = bytes[0];
SecondaryDataId = bytes[1];
DataCount = bytes[2];
CaptionDistributionPacketId = (bytes[3] << 8) + bytes[4];
CaptionDistributionPacketDataCount = bytes[5];
CaptionDistributionPacketFramingRate = bytes[6] >> 4;
CaptionDistributionPacketTimeCodeAdded = (bytes[7] & 0b10000000) > 0;
CaptionDistributionPacketDataBlockAdded = (bytes[7] & 0b01000000) > 0;
CaptionDistributionPacketServiceInfoAdded = (bytes[7] & 0b00100000) > 0;
CaptionDistributionPacketServiceInfoStart = (bytes[7] & 0b00010000) > 0;
CaptionDistributionPacketServiceInfoChanged = (bytes[7] & 0b00001000) > 0;
CaptionDistributionPacketServiceInfoEnd = (bytes[7] & 0b00000100) > 0;
CaptionDistributionPacketContainsCaptions = (bytes[7] & 0b00000010) > 0;
CaptionDistributionPacketHeaderSequenceCounter = (bytes[8] << 8) + bytes[9];
CcDataSectionCcData = new CcDataSection(bytes, 10);
var idx = 9 + CcDataSectionCcData.GetLength();
if (CaptionDistributionPacketServiceInfoAdded)
{
CcServiceInfoSection = new CcServiceInfoSection(bytes, idx + 1);
idx += CcServiceInfoSection.GetLength();
}
CaptionDistributionPacketFooterSection = bytes[1 + idx];
CaptionDistributionPacketHeaderSequenceCounter2 = (bytes[2 + idx] << 8) + bytes[3 + idx];
CaptionDistributionPacketChecksum = bytes[4 + idx];
}
public Smpte291M(int sequenceCount, int ccDataCount, byte[] bytes)
{
DataId = 0x61;
SecondaryDataId = 1;
DataCount = 0x59;
CaptionDistributionPacketId = 0x9669;
CaptionDistributionPacketDataCount = 0x59;
CaptionDistributionPacketFramingRate = 4; // 29.97
CaptionDistributionPacketTimeCodeAdded = false;
CaptionDistributionPacketDataBlockAdded = true;
CaptionDistributionPacketServiceInfoAdded = true;
CaptionDistributionPacketServiceInfoStart = true;
CaptionDistributionPacketServiceInfoChanged = true;
CaptionDistributionPacketServiceInfoEnd = true;
CaptionDistributionPacketContainsCaptions = true;
CaptionDistributionPacketHeaderSequenceCounter = sequenceCount;
CcDataSectionCcData = new CcDataSection(ccDataCount, bytes);
CcServiceInfoSection = new CcServiceInfoSection();
}
