[Galene] Background blur on Safari

[Galene] Background blur on Safari

[Juliusz Chroboczek]

Hi,

A user just reported that the background blur code doesn't work on Safari
15.6.  I've looked at the code, and while I'm positive it cannot work on
Safari 14 and earlier, I don't see anything that's not supposed to be
supported by Safari 15.

If you have a copy of Safari at the bottom of some drawer, could you
please test the background blur code and send me the console output?

Thanks,

-- Juliusz

[Galene] Re: Background blur on Safari

[Tim Panton]

On Safari Version 18.2 (20620.1.16.11.8) 
I see this in the console logs:

[Log] I1214 16:53:57.407000 1905760 gl_context.cc:374] GL version: 3.0 (OpenGL ES 3.0 (WebGL 2.0)), renderer: WebKit WebGL (vision_wasm_internal.js, line 10)
[Warning] W1214 16:53:57.408000 1905760 gl_context.cc:1060] OpenGL error checking is disabled (vision_wasm_internal.js, line 10)
[Log] Graph successfully started running. (vision_wasm_internal.js, line 10)
[Error] INFO: Created TensorFlow Lite XNNPACK delegate for CPU.
	put_char (vision_wasm_internal.js:10:42195)
	write (vision_wasm_internal.js:10:41471)
	write (vision_wasm_internal.js:10:67803)
	doWritev (vision_wasm_internal.js:10:137301)
	_fd_write (vision_wasm_internal.js:10:137516)
	<?>.wasm-function[14454]
	<?>.wasm-function[2627]
	<?>.wasm-function[4254]
	<?>.wasm-function[496]
	<?>.wasm-function[6243]
	<?>.wasm-function[8928]
	<?>.wasm-function[2811]
	<?>.wasm-function[3272]
	<?>.wasm-function[12615]
	<?>.wasm-function[12209]
	<?>.wasm-function[10415]
	<?>.wasm-function[3250]
	<?>.wasm-function[3352]
	<?>.wasm-function[6692]
	(anonymous function) (vision_wasm_internal.js:10:198473)
	finishProcessing (vision_bundle.mjs:1:77422)
	finishProcessing (vision_bundle.mjs:1:51346)
	tc (vision_bundle.mjs:1:78855)
	nc (vision_bundle.mjs:1:79149)
	Na (vision_bundle.mjs:1:129545)
	(anonymous function) (background-blur-worker.js:45)
	onmessage (background-blur-worker.js:21)
[Warning] W1214 16:53:57.470000 1905760 inference_feedback_manager.cc:121] Feedback manager requires a model with a single signature inference. Disabling support for feedback tensors. (vision_wasm_internal.js, line 10)
[Log] I1214 16:53:57.471000 1905760 segmentation_postprocessor_gl.cc:388] NONE activation function chosen on GPU (vision_wasm_internal.js, line 10)
[Error] Source Map loading errors (x2)
[Error] Failed to load resource: the server responded with a status of 404 () (vision_bundle_mjs.js.map, line 0)
[Error] Failed to load resource: the server responded with a status of 404 () (vision_bundle_mjs.js.map, line 0)
[Log] I1214 16:55:39.910000 1905760 gl_context.cc:374] GL version: 3.0 (OpenGL ES 3.0 (WebGL 2.0)), renderer: WebKit WebGL (vision_wasm_internal.js, line 10)
[Warning] W1214 16:55:39.912000 1905760 gl_context.cc:1060] OpenGL error checking is disabled (vision_wasm_internal.js, line 10)
[Log] Graph successfully started running. (vision_wasm_internal.js, line 10)
[Error] INFO: Created TensorFlow Lite XNNPACK delegate for CPU.
	put_char (vision_wasm_internal.js:10:42195)
	write (vision_wasm_internal.js:10:41471)
	write (vision_wasm_internal.js:10:67803)
	doWritev (vision_wasm_internal.js:10:137301)
	_fd_write (vision_wasm_internal.js:10:137516)
	<?>.wasm-function[14454]
	<?>.wasm-function[2627]
	<?>.wasm-function[4254]
	<?>.wasm-function[496]
	<?>.wasm-function[6243]
	<?>.wasm-function[8928]
	<?>.wasm-function[2811]
	<?>.wasm-function[3272]
	<?>.wasm-function[12615]
	<?>.wasm-function[12209]
	<?>.wasm-function[10415]
	<?>.wasm-function[3250]
	<?>.wasm-function[3352]
	<?>.wasm-function[6692]
	(anonymous function) (vision_wasm_internal.js:10:198473)
	finishProcessing (vision_bundle.mjs:1:77422)
	finishProcessing (vision_bundle.mjs:1:51346)
	tc (vision_bundle.mjs:1:78855)
	nc (vision_bundle.mjs:1:79149)
	Na (vision_bundle.mjs:1:129545)
	(anonymous function) (background-blur-worker.js:45)
	onmessage (background-blur-worker.js:21)
[Warning] W1214 16:55:39.973000 1905760 inference_feedback_manager.cc:121] Feedback manager requires a model with a single signature inference. Disabling support for feedback tensors. (vision_wasm_internal.js, line 10)


- None of which means anything to me!

Happy to help debug…

T.



> On 14 Dec 2024, at 16:28, Juliusz Chroboczek <jch@irif.fr> wrote:
> 
> Hi,
> 
> A user just reported that the background blur code doesn't work on Safari
> 15.6.  I've looked at the code, and while I'm positive it cannot work on
> Safari 14 and earlier, I don't see anything that's not supposed to be
> supported by Safari 15.
> 
> If you have a copy of Safari at the bottom of some drawer, could you
> please test the background blur code and send me the console output?
> 
> Thanks,
> 
> -- Juliusz
> _______________________________________________
> Galene mailing list -- galene@lists.galene.org
> To unsubscribe send an email to galene-leave@lists.galene.org

[Galene] Re: Background blur on Safari

[Juliusz Chroboczek]

Thanks for testing, Tim.

> I see this in the console logs:

[...]

> - None of which means anything to me!

This looks like just the normal log from MediaPipe.  Grr.  I'll see if
there's anywhere I'm not logging an error properly.

-- Juliusz

[Galene] Re: Background blur on Safari

[Juliusz Chroboczek]

>> - None of which means anything to me!
> 
> This looks like just the normal log from MediaPipe.  Grr.  I'll see if
> there's anywhere I'm not logging an error properly.

I've added better error handling to the code, checked that it works well
under Chromium, and I've had a user with Safari report that there's an
error during initialisation.

Unfortunately, Safari doesn't want to show me the error.  The error I'm
getting instead would seem to indicate that errors are not serialisable
under Safari.  (If that's the case, then Safari would be violating
Section 2.7.3 paragraph 17 of the spec.)

I'm giving up for now.  I've disabled background blur under Safari, and
might work on it again when I can borrow a Mac for a few hours.

-- Juliusz