DM365 JPEG decoder rotation problem

cwchang

Expert 1060 points

Hi,

I test the rotation of the JPEG decoder of DM365, but it does not work.

The original JPEG decoder works well, but the introduction of IJPEGDEC_DynamicParams

does not make any change. I am wondering if I miss something in the code.

The following is what I add for the JPEG decoder:

    dynParams.size                = sizeof(dynParams);
    dynParams.decodeHeader        = XDM_DECODE_AU;
    dynParams.numAU               = XDM_DEFAULT;
    dynParams.displayWidth        = XDM_DEFAULT;

    extDynParams.imgdecDynamicParams = dynParams;
    extDynParams.disableEOI          = 0;
    extDynParams.resizeOption        = 0;
    extDynParams.subRegionUpLeftX    = XDM_DEFAULT;
    extDynParams.subRegionUpLeftY    = XDM_DEFAULT;
    extDynParams.subRegionDownRightX = XDM_DEFAULT;
    extDynParams.subRegionDownRightY = XDM_DEFAULT;
    extDynParams.rotation            = 180;

    //status = IMGDEC1_control(decoder, XDM_SETPARAMS, &dynParams, &d_status);
    status = IMGDEC1_control(decoder, XDM_SETPARAMS, &extDynParams, &d_status);

Is there anything I need to add?

Any advice will be welcomed.

Thank you in advance.

Best regards,

Ray

over 14 years ago

0 Chris Ring over 14 years ago

TI__Genius 17205 points

The only way the codec knows whether the 3rd arg is 'extended' or not is by the .size field. When you pass in extDynParams, be sure to set extDynParams.size = sizeof(extDynParams).

http://processors.wiki.ti.com/index.php/Extending_data_structures_in_xDM

Chris

0 cwchang over 14 years ago

Expert 1060 points

Dear Chris:

I modified the code from

dynParams.size = sizeof(dynParams);

dynParams.size = sizeof(extDynParams);

and it works.

Thanks for your help very much.

Best regards,

Ray

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DM365 JPEG decoder rotation problem