CODEWITHSUNDEEP
c#
AMH
AMH

Reputation: 6451

Get the first 13 bit from short

I have byte array

byte[] PixelData = {255,235};

I want to convert it to short and before that I want to get the first 13 bit before the conversion because when I convert using the following code improper values return 

short val1 = 0;
val1 = BitConverter.ToInt16(PixelData, 0);

any ideas how to do that

Upvotes: 1

Views: 434

Answers (1)

Marc Gravell
Marc Gravell

Reputation: 1063704

Most likely this is an endianness issue. If unsure, use shifting instead:

short val1 = (short) ((PixelData[0] << 8) | (PixelData[1]));

if you really need the 13 bits, use an & mask:

short val1 = (short) (((PixelData[0] << 8) | (PixelData[1])) & 8191);

Note: I've assumed big-endian in the above; if your data is little-endian, just reverse them:

short val1 = (short) ((PixelData[0]) | (PixelData[1] << 8));

and

short val1 = (short) (((PixelData[0]) | (PixelData[1] << 8)) & 8191);

Upvotes: 4

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