Hi,
If you are you somewhere in DM355 video line I'm not sure how you could use 3
byte YUV.
Usually the YUV dump will be as UYVY - 32 bytes for 2 pixels which could be
converted to 48 bytes for 2 pixels if you are converting it to RGB-24Bit.
Or were using a customized 3byte YUV?
Best Regards,
Deepak Shankar V
________________________________
From: [email protected]
[mailto:[email protected]] On Behalf Of
Ondrej Pindroch
Sent: Tuesday, June 02, 2009 5:32 PM
To: davinci-linux-open-source
Subject: Problem to convert YUV to RGB
Hi
I need to produce BMP image as output from previewer. It is all fine except
converting YUV to RGB.
I have made function which take 3 bytes YUV data and stores 3bytes RGB. I need
to do it in fixed point arithmetic.
Below is my code of this function. I have no idea what is wrong.
int convertYUVtoRGB (struct RGBhodnoty *RGBvals,struct YUVhodnoty *YUVvals)
{
short Yshort,Ushort,Vshort;
Yshort = (short)YUVvals->val_Y;
if (YUVvals->val_U > 127) Ushort = (short)YUVvals->val_U - 256;
else Ushort = (short)YUVvals->val_U;
if (YUVvals->val_V > 127) Vshort = (short)YUVvals->val_V - 256;
else Vshort = (short)YUVvals->val_V;
RGBvals->val_R = (char) (((298*(Yshort-16) + 409*(Vshort) + 128)>>8) &
0xFF);
RGBvals->val_G = (char) (((298*(Yshort-16) - 100*(Ushort) - 208*(Vshort) +
128) >>8) & 0xFF);
RGBvals->val_B = (char) (((298*(Yshort-16) + 516*(Ushort) + 128)>>8) &
0xFF);
return 0;
}
Please help!
Ondrej Pindroch
SoftHard Technology ltd.
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