JPEG Encode fail on ippiEncodeHuffman8x8_JPEG_16s1u_C1

[Kelvin]

Hi,

I use jpeg sample to encode image of size 720x480
as follows:

-------------------------------------
int linestep = img_w*3 + DIB_PAD_BYTES(img_w, 3);
encoder.SetSource(pBGR, img_w, img_h, 3, linestep, JC_BGR);
encoder.SetDestination(95, JS_444, JC_YCBCR);
errCode = encoder.WriteWholeImage(pJpeg, JPEGSize);
---------------------------------------

It returns internal error and debug mode report

IPP Error: ippiEncodeHuffman8x8_JPEG_16s1u_C1() failed - -62

It seems happen only on those image which we overlap
some line or text on it. e.g.

http://graphics.usc.edu/~tatchung/test.jpg

I also try JPEG samples 4.1 but same problem
happens. I'm using IPP 4.1.

Is it a known problem ?

Thanks.

- Kelvin

[Vladimir_Dudnik]

Hi,

No, there were no such bug with IPP JPEG codec, can you reproduce this bug in JPEGView sample?

Note, you can see textual descripion of errors in ippdefs.h file. Here, status = -62 stands for ippStsJPEGOutOfBufErr = -62, /* Attempt to access out of the buffer */.

The reason can be not enough buffer size for output JPEG data. Can you increase buffer for compressed JPEG data?

Regards,

Vladimir

[Kelvin]

Vladimir,

You're right ! Thanks for helping me
to solve the problem. :-)

- Kelvin

[Vladimir_Dudnik]

Hi Kelvin,

you are welcome:)

Regards,

Vladimir