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INDI Library v2.0.7 is Released (01 Apr 2024)

Bi-monthly release with minor bug fixes and improvements

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V4L2 CCD PHD2 stacking not working

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Replied by Tomasz Pszon on topic V4L2 CCD PHD2 stacking not working

I have also tried with EKOS (like sombody in other topic here) and there even if I turn stream on nothing is captured and guiding does not work.
6 years 2 months ago #23313

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Replied by Patrick Chevalley on topic V4L2 CCD PHD2 stacking not working

Now the webcam can basically work phd2 if you compile today last git.
See:
www.indilib.org/forum/ccds-dslrs/3078-v4...-property.html#23384

If this work for you we can continue with the implementation of stacking.
6 years 2 months ago #23386

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Replied by Jasem Mutlaq on topic V4L2 CCD PHD2 stacking not working

Unfortunately, there is no way to remove it since it is based on INDI::CCD now. Maybe you can add a checkbox in PHD2 to use streaming over standard capture when available? A user preference.
6 years 2 months ago #23391

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Replied by Patrick Chevalley on topic V4L2 CCD PHD2 stacking not working

I am a bit reluctant to add a checkbox because many user like to check the options they not need, and the risk is they use a less performant guiding by forcing to streaming a camera that also support long exposure.
At least all the users of ZWO and QHY are at risk. On the other side the users of webcam or video acquisition card are probably very few because this is not working with phd2 for nearly two years before we get a report.
6 years 2 months ago #23393

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Replied by Tomasz Pszon on topic V4L2 CCD PHD2 stacking not working

Thank you.
It works with my webcam, it falls to streaming after trying exposure. I don't need to turn on streaming in indi driver control panel.
How could we make stacking work?
Last edit: 6 years 2 months ago by Tomasz Pszon.
6 years 2 months ago #23395

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Replied by Patrick Chevalley on topic V4L2 CCD PHD2 stacking not working

I implemented stacking now:
github.com/OpenPHDGuiding/phd2/commit/18...570b88a5dbc2b1201c13

Can you compile the last git and try it?
6 years 2 months ago #23405

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Replied by Tomasz Pszon on topic V4L2 CCD PHD2 stacking not working

It works very nice. Thank you very much.
I have just noticed that it starts streaming and works for the time set in PHD's exposure control and then stops and starts again (This behaviour started in the version without stacking (github.com/OpenPHDGuiding/phd2/commit/8e...c203243953f11290b6f5))
It only lowers number of frames available for stacking if exposure time is set to 1, or 2 seconds (15 instead of 20 for 1s).
Last edit: 6 years 2 months ago by Tomasz Pszon.
6 years 2 months ago #23407

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Replied by Patrick Chevalley on topic V4L2 CCD PHD2 stacking not working

Thank you for testing!

Yes, I can probably change that to start the streaming the first time and never stop it until we disconnect the camera or maybe if the stop button is pushed.
Frames received outside of pseudo exposure time will just be ignored.
I look to make that tomorrow.
6 years 2 months ago #23413

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Replied by Patrick Chevalley on topic V4L2 CCD PHD2 stacking not working

This was more easy than I expected, I already commit the change:
github.com/OpenPHDGuiding/phd2/commit/59...f7d16b2bb455b03d04fe

Just pull and compile again, you must see more stacked frames as streaming is not always stopped.
6 years 2 months ago #23414

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Replied by Tomasz Pszon on topic V4L2 CCD PHD2 stacking not working

Great, it is brilliant. It works as expected.
Thank you again for your effort.
6 years 1 month ago #23424

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Replied by Patrick Chevalley on topic V4L2 CCD PHD2 stacking not working

Finally I also add an option in the phd2 INDI camera setup to force the use of streaming over exposure time.
I label the checkbox a bit negatively "Camera do not support exposure time" to avoid unwanted use. But you can use it force the use of stream stacking if the camera support both method.

This is in :
github.com/OpenPHDGuiding/phd2/commit/3a...db35b1d97d5e23ba3086
6 years 1 month ago #23434

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Replied by Tomasz Pszon on topic V4L2 CCD PHD2 stacking not working

Very good, now I don't need to wait 5s to start streaming.
I've compiled it and it works.
6 years 1 month ago #23435

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