[Camera] UI appears briefly after selecting record with any self timer enabled.



4 years ago
4 years ago


(Reporter: jthomas, Assigned: wilsonpage)


Gonk (Firefox OS)

Firefox Tracking Flags

(b2g-v2.0 affected, b2g-v2.1 affected, b2g-v2.2 affected)


(Whiteboard: [2.1-exploratory-3], URL)


(2 attachments)



4 years ago
Created attachment 8513848 [details]

Description: If the user selects record with any Self-Timer option enabled the Camera UI and buttons will appear briefly. [None functional]

Repro Steps:
1) Update a Flame device to BuildID: 20141029001202
2) Select Camera App
3) Select the drawer button. (Currently located to the top right.
4) Select Self-Timer
5) Select any delay option except for Off.
6) Back out to the Camera menu.
7) Switch to Video mode.
8) Press Record.
9) Observe the UI menu that appears briefly and then disappears. 

Camera UI menu with buttons appears and then disappears.
It is expected that after pressing record the countdown will begin followed by the recording of the video with the additional UI buttons appearing.
Environmental Variables:
Device: Flame 2.1 (319mb)(Kitkat Base)(Full Flash)
BuildID: 20141029001202
Gaia: eb0aab0f13c78c7ac378ad860e865c4b6eaf669f
Gecko: 318019f80a8e
Gonk: 48835395daa6a49b281db62c50805bd6ca24077e
Version: 34.0 
Firmware: V188
User Agent: Mozilla/5.0 (Mobile; rv:34.0) Gecko/34.0 Firefox/34.0

Repro frequency: 100%
See attached: Logcat, Video
Video: https://www.youtube.com/watch?v=xsDomldwTg0&list=UUluQpY8Ym6rXFSwAPn8mQow

Comment 1

4 years ago
This issue DOES occur on the Flame 2.2 Master (319mb)(Kitkat Base)(Full Flash) and Flame 2.0 (319mb)(Kitkat Base)(Full Flash)

Result: Camera UI with buttons briefly appears with no function before video begins recording.

Environmental Variables:
Device: Flame 2.2 Master (319mb)(Kitkat Base)(Full Flash)
BuildID: 20141029040208
Gaia: 35e87ac4324f0f3abd93dcc70d61c9f37256a0f5
Gecko: 7e3c85754d32
Gonk: 48835395daa6a49b281db62c50805bd6ca24077e
Version: 36.0a1 
Firmware: V188
User Agent: Mozilla/5.0 (Mobile; rv:36.0) Gecko/36.0 Firefox/36.0

Environmental Variables:
Device: Flame 2.0 (319mb)(Kitkat Base)(Full Flash)
BuildID: 20141029000205
Gaia: 9f5b6f025e528fabfcc068782cb9b492cb51a7f9
Gecko: de8cfd54bf93
Gonk: 48835395daa6a49b281db62c50805bd6ca24077e
Version: 32.0 
Firmware: V188
User Agent: Mozilla/5.0 (Mobile; rv:32.0) Gecko/32.0 Firefox/32.0
QA Whiteboard: [QAnalyst-Triage?]
Flags: needinfo?(dharris)
This bug makes it seem like the recording is not working at all and could be very confusing to the end user. NI Camera owner to see if this is a blocker.
QA Whiteboard: [QAnalyst-Triage?] → [QAnalyst-Triage+]
Flags: needinfo?(dharris) → needinfo?(npark)
[Blocking Requested - why for this release]:

Noticed this as well, the camera UI continues to disappear and reappear throughout the recording, and the time indicator gets cropped periodically.  Bad UI experience.
blocking-b2g: --- → 2.1?
Flags: needinfo?(npark)

Comment 4

4 years ago
Wilson or Diego, 

Can one of you take a look at this?

Assignee: nobody → wilsonpage
Flags: needinfo?(dmarcos)

Comment 5

4 years ago
I've had a look into this and it appears to be a graphics issue as:

- Taking a screenshot of the broken UI doesn't show the bug
- Selecting elements in the inspector and changing properties, causes them to flicker/show/hide.

Mike, who is best to investigate this further?
Flags: needinfo?(mhabicher)

Comment 6

4 years ago
Ah I think comment 5 is describing a different bug. I have managed to reproduce the original bug; working on a fix now.
Flags: needinfo?(mhabicher)

Comment 7

4 years ago

We weren't flagging the camera as 'recording' until the hardware had actually begun writing the video file. This meant that the UI remains unchanged for few 100ms. So between the timer finishing and the camera 'recording' there was a period of time where the UI switched back.


Flagging the camera as 'recording' as soon as the call the record is made ensures the UI updates instantly. This eliminates flicker of UI between timer-end and recording-start and generally makes the camera *feel* more responsive.

Comment 8

4 years ago
Created attachment 8517504 [details] [review]
pull-request (master)

Still got to add some tests.
Attachment #8517504 - Flags: review?(jdarcangelo)
Flags: needinfo?(dmarcos)
Comment on attachment 8517504 [details] [review]
pull-request (master)

LGTM (minus the unrelated GFX glitches on master)
Attachment #8517504 - Flags: review?(jdarcangelo) → review+

Comment 11

4 years ago
Fixed on master. Guess we need to uplift now.
Last Resolved: 4 years ago
Resolution: --- → FIXED

Comment 12

4 years ago
Triage decision: the settings menu shows for a split second and gets back into recording based on video -- Not worth blocking at this stage and based on triage criteria. 

Wilson, you could ask for approval request based on risk of patch.

blocking-b2g: 2.1? → ---
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