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Encode Jpeg by IJL

yasu
Beginner
306 Views
Hi,

I'm trying to encode YCbCr422(DIB) to JPEG by using IJL without converting it to 24-bits RGB image. However, the made JPEG image darkens compared with original image. Is it right ?

jCprops.DIBWidth = Wid;
jCprops.DIBHeight = Hei*(-1);
jCprops.DIBBytes = pYCbCr;
jCprops.DIBPadBytes = 0;
jCprops.DIBChannels = 3;
jCprops.DIBColor = IJL_YCBCR;
jCprops.DIBSubsampling = IJL_422; //?

jCprops.JPGFile = pJpegPath;
jCprops.JPGWidth = Wid;
jCprops.JPGHeight = Hei;
jCprops.JPGChannels = 3;
jCprops.JPGColor = IJL_YCBCR;
jCprops.JPGSubsampling = IJL_422; //?
// jCprops.JPGSubsampling = IJL_NONE; //?
jCprops.jquality = JQuality;

Is it right ?
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Vladimir_Dudnik
Employee
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please take a look at thread Encode Jpeg by IJLfor sample code

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