internal static ExtendedTagHeaderV3 Create(int paddingSize, bool crcDataPresent, byte[] crc)
{
var extendedHeader = new ExtendedTagHeaderV3
{
PaddingSize = paddingSize,
CrcDataPresent = crcDataPresent,
Crc32 = crc
};
return extendedHeader;
}
internal static ExtendedTagHeaderV3 Create(byte[] content)
{
var flags = new byte[2];
var paddingBytes = new byte[4];
Array.Copy(content, 0, flags, 0, 2);
Array.Copy(content, 2, paddingBytes, 0, 4);
var extendedHeader = new ExtendedTagHeaderV3();
extendedHeader.CrcDataPresent = (flags[0] & 0x80) == 0x80;
extendedHeader.PaddingSize = Utils.CalculateExtendedHeaderPaddingSize(paddingBytes);
if (extendedHeader.CrcDataPresent)
{
var crcBytes = new byte[4];
Array.Copy(content, 6, crcBytes, 0, 4);
extendedHeader.Crc32 = crcBytes;
}
return extendedHeader;
}