public ByteBuffer Encode()
{
var buffer = new ByteBuffer(PACKET_SIZE_IN_BYTES);
NtpTime ntpTime = new NtpTime(Time);
buffer.WriteUint32NetworkOrder(ntpTime.Seconds);
buffer.WriteUint32NetworkOrder(ntpTime.Fraction);
byte b = 0x00;
if (CbitSet)
{
b |= C_BIT_FLAG_MASK;
}
if (DbitSet)
{
b |= D_BIT_FLAG_MASK;
}
if (EbitSet)
{
b |= E_BIT_FLAG_MASK;
}
buffer.WriteByte(b);
buffer.WriteByte(CSeq);
buffer.WriteInt16(0);
buffer.SetPosition(0, ByteBuffer.PositionOrigin.BEGINNING); // Re-set so that we can read from the list
buffer.MarkReadOnly();
return(buffer);
}
public static OnvifRtpHeader Decode(ByteBuffer buffer)
{
var ntpTime = new NtpTime(buffer.ReadInt64AsHost());
byte b = buffer.ReadByte();
return(new OnvifRtpHeader()
{
Time = ntpTime.UtcDate,
CbitSet = (b & C_BIT_FLAG_MASK) != 0,
DbitSet = (b & D_BIT_FLAG_MASK) != 0,
EbitSet = (b & E_BIT_FLAG_MASK) != 0,
CSeq = buffer.ReadByte()
});
}
public void TestConvertToNtp()
{
DateTime date = new DateTime(2017, 10, 17, 4, 33, 17, 32, DateTimeKind.Local);
NtpTime ntpTime = new NtpTime(date);
Assert.Equal(3717225197, ntpTime.Seconds);
Assert.Equal((uint)137438953, ntpTime.Fraction);
Assert.Equal(date, ntpTime.UtcDate.ToLocalTime());
date = new DateTime(2012, 8, 2, 8, 52, 1, 43);
ntpTime = new NtpTime(date);
Assert.Equal(3552907921, ntpTime.Seconds);
Assert.Equal((uint)184683593, ntpTime.Fraction);
Assert.Equal(date, ntpTime.UtcDate.ToLocalTime());
}
