Re: RFC: gtk v4l2 (webcam) control panel app + applet

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Hi,

On 01/15/2010 11:33 AM, Bastien Nocera wrote:
> On Fri, 2010-01-15 at 11:14 +0100, Hans de Goede wrote:
>> Hi,
>>
>> On 01/12/2010 01:13 PM, Bastien Nocera wrote:
>>> Good idea, apart from:
>>>
>>> On Tue, 2010-01-12 at 12:39 +0100, Hans de Goede wrote:
>>>>
>>>> For Fedora-14 (to be released November 2010) it would be nice to have
>>>> a
>>>> gtk application for controlling various camera settings (brightness,
>>>> contrast, etc.) *and* a small applet which shows a webcam icon
>>>> next to the clock when a webcam is present.
>>>
>>> Having an applet showing up for each and every type of device that's
>>> plugged into your computer is a bad idea.
>>>
>>
>> I agree, but I have a number of reasons for thinking this way (note this
>> is not me saying but I'm going to go this way anyways, this is me asking
>> for better ways to achieve the below aims):
>>
>> 1. Many people don't know which app to use to test their webcam, one of
>> the things I would also like to add to the icon is "launch webcam viewer"
>> (this is a bit of a lame reason, if this were the only one, the icon could
>>    die right away).
>
> A "webcam" preference would probably be good enough.
>

True.

>> 2. One some laptops the webcam can be turned on / off with Fn + F##, and
>> there is no indicator whether it is on or off, the icon would serve as
>> such an indicator.
>
> You'd add a visual cue to gnome-settings-daemon, this is already what we
> do for a number of the multimedia keys. Feel free to file an upstream
> bug with some details about that key combination (whether it's hard
> wired, whether there's X key events happening when you do that and what
> it is, etc.).
>

Good idea, bug filed:
https://bugzilla.gnome.org/show_bug.cgi?id=607064

>> 3. Some really cheap still cameras, so called dual mode cams, can also
>> functions as a webcam, but only when the gvfs gphoto2 share in nautilus
>> is not mounted, this icon is supposed to tell people that:
>> 1) A webcam was detected (even if the kernel driver at that moment was detached
>> by gvfsd-gphoto2)
>> and:
>> 2) Give them easy access to unmounting the gphoto2 share, making the camera
>> available to other apps.
>
> This is really a work-around for bugs in the way our framework works.
> Something like that would probably do:
> https://bugzilla.gnome.org/show_bug.cgi?id=606058
>

True, but I'm afraid this solution will have issues of itself, and explictly
mounting / unmounting might be a better option.

I'm worried things like the file-open dialog might cause some io on the gvfs
share every time the dialog is used, leading to the driver being disconnected
and re-connected, which is not good when some app, say skype has it open.

Regards,

Hans
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