MediaCapture with GPU based IBasicVideoEffect issue still there

[ratishphilip]

@shawnhar
Hi,

This is regarding the issue reported in #350 and #397.

I am currently using a Lumia 640 with build 14951. Though this issue was fixed in an earlier build (14393), I believe it has returned again. I am still seeing the Media Capture Failed: The parameter is incorrect error message.

Also, whenever I add a new VideoEffect to the VideoPreview stream of MediaCapture, in my own sample application, the CaptureElement does not display any video (just a white screen). Removing the VideoEffect shows the preview normally. ( I have reported it here )

Could you please look into this issue?

[13thsymphony]

I tried to repro the "parameter is incorrect" issue on two Lumia 950's with 14959, and they both worked.

[ratishphilip]

@13thsymphony

It is happening on my Lumia 640 with 14951. Are any of the features in Win2d not supported in Lumia 640?

[13thsymphony]

The previous issue (#350, #397) repro'ed on both the 640 and 950. We still need to investigate what you're seeing, but this suggests it is a new issue.

[ratishphilip]

As I have elaborated here, if I comment this line in my code, the preview works

var effect = await _mediaCapture.AddVideoEffectAsync(
                new VideoEffectDefinition(typeof(TheEffect).FullName),
                                            MediaStreamType.VideoPreview);

[ratishphilip]

If I add a IBasicVideoEffect to the VideoPreview, all I see is a white screen.

[13thsymphony]

Can you try the camera effect demo in the Win2D Example Gallery?

[ratishphilip]

Yes I did. That's when I am getting the Media Capture Failed: The parameter is incorrect error message.

[ratishphilip]

Upon debugging I am getting a MediaCapture Failed event after this line

await mediaCapture.AddVideoEffectAsync(new VideoEffectDefinition(typeName, effectPropertySet),
                MediaStreamType.VideoPreview);

[ratishphilip]

@shawnhar @13thsymphony
I updated my Lumia 640 to 14955 yesterday.
I am still seeing the same error.

[13thsymphony]

I was finally able to get my hands on a Lumia 640 and upgrade the OS to 14955, and this does indeed repro. This appears to be another regression in the underlying OS; we are investigating more.

[ratishphilip]

@13thsymphony
Thank you. Hope a solution is found soon.

[13thsymphony]

@ratishphilip
This definitely is a similar (if not identical) regression in the OS as #397. We're working with the platform team to get it fixed.

For my reference, this is internal bug 9637471

[ratishphilip]

Does this error happen on devices older than Lumia 640? (Like Lumia 550)?

[13thsymphony]

Our current hypothesis is that the issue hits devices using the Adreno 300 series of GPU (DX feature level 9_3). This includes the 550, but we haven't tried it explicitly. The Lumia 950, for example, uses a 400 series and is not affected (DX feature level 11_1).

[ratishphilip]

So to effectively use all the features of Win2d and the camera, the baseline device is Lumia 950?

[ratishphilip]

@shawnhar @13thsymphony
any updates on this bug?

[ratishphilip]

@shawnhar @13thsymphony
any updates on this bug?
Is it fixed in 14977 build?

[shawnhar]

No, this is not fixed yet.

[shawnhar]

This issue should be fixed in Windows OS builds from mid-Feb onwards.

[ratishphilip]

Yes it is. Just checked on my L640.

Thank you very much.