topic Re: issue about imx6 jpeg file decoding in i.MX Processors

issue about imx6 jpeg file decoding

宗標廖 — Thu, 20 Aug 2015 09:54:15 GMT

Hello Community

I met a problem when I want to decode a JPEG picture file, it output an error

'The Jpeg Image must be another profile'. I found that the error came from

imx-vpu-lib-3.0.35-4.1.0.

After the error happend,width property and height property read from the file

were 0.

Could you tell me why the error happened.

My test environment is:

1)HW:imx6qsabreauto

2)SW:L3.0.35_4.1.0

The JPEG file that I used is as the attachment.

I can open this JPEG file in windows system and ubuntu system.

Thank you!

Best Regards.

ZongbiaoLiao

Re: issue about imx6 jpeg file decoding

art — Fri, 21 Aug 2015 12:47:05 GMT

The L3.0.35 Linux BSP does not support VPU hardware acceleration for JPEG decoding, only the MJPEG format is supported.

Have a great day,
Artur

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Re: issue about imx6 jpeg file decoding

宗標廖 — Mon, 24 Aug 2015 00:02:04 GMT

Hi Artur

I knew that.

In my case,some JPEG file can be decoded, but some JPEG file can not be decoded,it output error

'The Jpeg Image must be another profile'.

So I want to know why this error is output for some JPEG file.

Thank you!

Best Regards.

ZongbiaoLiao

Re: issue about imx6 jpeg file decoding

art — Tue, 25 Aug 2015 12:39:45 GMT

Most likely, some pictures have a color profiles that are not supported by a software JPEG decoder, included in the L3.0.35 BSP.

Have a great day,
Artur

Re: issue about imx6 jpeg file decoding

宗標廖 — Thu, 27 Aug 2015 11:36:57 GMT

Hello, Artur

Did you mean i.MX6 cannot decode a JPEG that has a color profiles.

If it can,could you offer me patch files or sample code.

Thank you.

ZongbiaoLiao

Re: issue about imx6 jpeg file decoding

宗標廖 — Tue, 01 Sep 2015 03:43:25 GMT

any reply to me?