private void WriteFrameHeader(int MinorVersion)
{
byte[] Buf;
int FrameIDLength = MinorVersion == 2 ? 3 : 4; // Length of FrameID according to version
string Temp = _FrameID;
// if minor version of ID3 were 2, the frameID is 3 character length
if (MinorVersion == 2)
{
Temp = FramesInfo.Get3CharID(Temp);
if (Temp == null) // This frame is not availabe in this version
{
return;
}
}
Tag.WriteText(Temp, TextEncodings.Ascii, false); // Write FrameID
Buf = BitConverter.GetBytes(Length);
Array.Reverse(Buf);
if (MinorVersion == 2)
{
Tag.FS.Write(Buf, 1, Buf.Length - 1); // Write Frame Size
}
else
{
Tag.FS.Write(Buf, 0, Buf.Length); // Write Frame Size
}
if (MinorVersion != 2)
{
// If newer than version 2 it have Flags
Buf = BitConverter.GetBytes((ushort)_FrameFlags);
Array.Reverse(Buf);
Tag.FS.Write(Buf, 0, Buf.Length); // Write Frame Flag
}
}
/// <summary>
/// Get header of current frame according to specific Size
/// </summary>
/// <param name="MinorVersion">Minor version of ID3v2</param>
/// <returns>MemoryStream contain frame header</returns>
protected MemoryStream FrameHeader(int MinorVersion)
{
byte[] Buf;
MemoryStream ms = new MemoryStream();
int FrameIDLength = MinorVersion == 2 ? 3 : 4; // Length of FrameID according to version
string Temp = _FrameID;
// if minor version of ID3 were 2, the frameID is 3 character length
if (MinorVersion == 2)
{
Temp = FramesInfo.Get3CharID(Temp);
if (Temp == null) // This frame is not availabe in this version
{
return(null);
}
}
ms.Write(Encoding.ASCII.GetBytes(Temp), 0, FrameIDLength); // Write FrameID
Buf = BitConverter.GetBytes(Length);
Array.Reverse(Buf);
if (MinorVersion == 2)
{
ms.Write(Buf, 1, Buf.Length - 1); // Write Frame Size
}
else
{
ms.Write(Buf, 0, Buf.Length); // Write Frame Size
}
if (MinorVersion != 2)
{
// If newer than version 2 it have Flags
Buf = BitConverter.GetBytes((ushort)_FrameFlags);
Array.Reverse(Buf);
ms.Write(Buf, 0, Buf.Length); // Write Frame Flag
}
return(ms);
}