Question about the deiLink bypass mode

tianxing hou

Expert 2435 points

Hi,

Now, I used the DVRRDK_4.0 on the platform of DM816x.

I have a question about the bypass mode of deiLink .

On my program, the link as follow:

CaptureLink --> DeiLink -->MpSclrLink ...

And the scanformat of each link as follow:

CaptureLink, output progressive

DeiLink, input progressive, output progressive.

MpSclrLink, input progressive

Now, I want to enable the bypass mode of DeiLink, and set the parameters of dei as follow:

DeiLink_CreateParams *vpssDeiParam0;
vpssDeiParam0 = &thisObj->vpssDeiPrm[0];
DeiLink_CreateParams_Init(&thisObj->vpssDeiPrm[0]);
vpssDeiParam0->inQueParams.prevLinkId = thisObj->vpssCapId;
vpssDeiParam0->inQueParams.prevLinkQueId = 1;
vpssDeiParam0->outQueParams[DEI_LINK_OUT_QUE_VIP_SC].nextLink = thisObj->mpsclrId;
vpssDeiParam0->outQueParams[DEI_LINK_OUT_QUE_DEI_SC].nextLink = SYSTEM_LINK_ID_INVALID;
vpssDeiParam0->enableOut[DEI_LINK_OUT_QUE_VIP_SC] = TRUE;
vpssDeiParam0->enableOut[DEI_LINK_OUT_QUE_DEI_SC] = FALSE;
vpssDeiParam0->tilerEnable[DEI_LINK_OUT_QUE_VIP_SC] = FALSE;
vpssDeiParam0->comprEnable = FALSE;
vpssDeiParam0->setVipScYuv422Format = FALSE;
vpssDeiParam0->enableDeiForceBypass = TRUE;
vpssDeiParam0->enableLineSkipSc = FALSE;
vpssDeiParam0->interlacedBypassMode = TRUE;

vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][0].scaleMode = DEI_SCALE_MODE_RATIO;
/* VIP Scalar ratio is 1:1 */
vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][0].ratio.widthRatio.numerator = 1;
vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][0].ratio.widthRatio.denominator = 1;
vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][0].ratio.heightRatio.numerator = 1;
vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][0].ratio.heightRatio.denominator = 1;

for (chId=1; chId < DEI_LINK_MAX_CH; chId++)
vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][chId] = vpssDeiParam0->outScaleFactor[DEI_LINK_OUT_QUE_VIP_SC][0];

However I can't get the expected image.

If I add DeiLink between captureLink and mpsclrLink, the image would be follow:

If I don't add DeiLink, the image would be follow:

over 11 years ago

0 Badri Narayanan over 11 years ago

TI__Guru 59700 points

You should set vpssDeiParam0->interlacedBypassMode = FALSE for progressive input. I don't understand why you have MpSclr after DEI. If capture resolution is greater than 1920x1080 DEI cannot process it.

0 tianxing hou over 11 years ago in reply to Badri Narayanan

Expert 2435 points

Badri, thanks for your reply.

Now, I have a requirement of 90 degree rotation, and the capture resolution is 2592*1936, could you give a advice about the 90 degree rotation of the image(resolution is 2592*1936).

Now, I used the EDMA to rotated the image, however, it consum more time and the frames rate will be decrease, for example, the capture frames rate is 15fps, when I rotated the image by edma, the frames rate will be 5 fps.

So, I want to enable the tiler to rotated the image, however, I can't find a solution.

Could you give me some advices, it is urgent for us.

And, I have post some questions on e2e:

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/310774/1086702.aspx#1086702

http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/t/313213.aspx

0 Badri Narayanan over 11 years ago in reply to tianxing hou

TI__Guru 59700 points

The only module that supports greater than 1080P input resolution is MpScaler. So the only option is to do

Capture -> (YUV420SP tiled) -> MpSclr

and rotate the input to MpSclr by 90 degrees.

But MpSclr output is always 1920x1080 so it will not preserve the aspect ratio.

The only other option is to modify NsfLink to enable subFrameMode and process the frame in NSF link in slices (Similar to how Mpsclr processes frames). You can then rotate the output of NSF by 90 degrees.

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Question about the deiLink bypass mode