Bug 170486 – Canvas is tainted when painting a video with MediaStreamTrack

• Component: Media
• Status: RESOLVED FIXED

[youenn fablet]

This should only be the case if the track is isolated.

[youenn fablet]

Created attachment 306233 [details]
Patch

[youenn fablet]

Created attachment 306235 [details]
Patch

[youenn fablet]

Hum, before the patch, we were only tainting canvas when using video.srcObject but not video.src.
There might be something to fix there.

[Build Bot]

Comment on attachment 306235 [details]
Patch

Attachment 306235 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.webkit.org/results/3474869

New failing tests:
http/tests/media/media-stream/getusermedia-with-canvas.html

[Build Bot]

Created attachment 306237 [details]
Archive of layout-test-results from ews106 for mac-elcapitan-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: ews106  Port: mac-elcapitan-wk2  Platform: Mac OS X 10.11.6

[Eric Carlson]

Comment on attachment 306235 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=306235&action=review

> LayoutTests/http/tests/media/media-stream/resources/getUserMedia-helper.js:32
> +    evalAndLog('video.srcObject = mediaStream');

Looks like you changed the test but not the results:

> video.src = window.URL.createObjectURL(mediaStream)

URL.createObjectURL(mediastream) has been deprecated (see https://github.com/w3c/mediacapture-main/issues/404#issuecomment-271521028 and https://webkit.org/b/167518) so this form is better.

[youenn fablet]

Created attachment 306245 [details]
Patch for landing

[WebKit Commit Bot]

Comment on attachment 306245 [details]
Patch for landing

Rejecting attachment 306245 [details] from commit-queue.

Failed to run "['/Volumes/Data/EWS/WebKit/Tools/Scripts/webkit-patch', '--status-host=webkit-queues.webkit.org', '--bot-id=webkit-cq-02', 'apply-attachment', '--no-update', '--non-interactive', 306245, '--port=mac']" exit_code: 2 cwd: /Volumes/Data/EWS/WebKit

Last 500 characters of output:
ChangeLog
Hunk #1 FAILED at 1.
1 out of 1 hunk FAILED -- saving rejects to file LayoutTests/ChangeLog.rej
patching file LayoutTests/http/tests/media/media-stream/getusermedia-with-canvas-expected.txt
patching file LayoutTests/http/tests/media/media-stream/getusermedia-with-canvas.html
patching file LayoutTests/http/tests/media/media-stream/resources/getUserMedia-helper.js

Failed to run "[u'/Volumes/Data/EWS/WebKit/Tools/Scripts/svn-apply', '--force']" exit_code: 1 cwd: /Volumes/Data/EWS/WebKit

Full output: http://webkit-queues.webkit.org/results/3475333

[youenn fablet]

Thanks for the review.

(In reply to Eric Carlson from comment #6)
> Comment on attachment 306235 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=306235&action=review
> 
> > LayoutTests/http/tests/media/media-stream/resources/getUserMedia-helper.js:32
> > +    evalAndLog('video.srcObject = mediaStream');
> 
> Looks like you changed the test but not the results:

Right!

> > video.src = window.URL.createObjectURL(mediaStream)
> 
> URL.createObjectURL(mediastream) has been deprecated (see
> https://github.com/w3c/mediacapture-main/issues/404#issuecomment-271521028
> and https://webkit.org/b/167518) so this form is better.

Is there something that prevents us to remove it?

[youenn fablet]

Created attachment 306247 [details]
Patch for landing

[Eric Carlson]

(In reply to youenn fablet from comment #9)
> Thanks for the review.
> 
> (In reply to Eric Carlson from comment #6)
> > Comment on attachment 306235 [details]
> 
> > > video.src = window.URL.createObjectURL(mediaStream)
> > 
> > URL.createObjectURL(mediastream) has been deprecated (see
> > https://github.com/w3c/mediacapture-main/issues/404#issuecomment-271521028
> > and https://webkit.org/b/167518) so this form is better.
> 
> Is there something that prevents us to remove it?

No.

[youenn fablet]

(In reply to Eric Carlson from comment #11)
> > Is there something that prevents us to remove it?
> 
> No.

Patch available at https://webkit.org/b/167518

[WebKit Commit Bot]

Comment on attachment 306247 [details]
Patch for landing

Clearing flags on attachment: 306247

Committed r214928: <http://trac.webkit.org/changeset/214928>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.