Re: [libv4l-mcplugin PATCH 0/3] Media controller plugin for libv4l2

[Yordan Kamenov <ykamenov@mm-sol.com>]

Hans de Goede wrote:
> Hi,
Hi Hans,
>
> So judging from the directory layout, this is supposed to be a separate
> project, and not part of v4l-utils / libv4l, right?
>
It is separate now, but I guess that at some point it would be good to have
'plugins' directory containing some generic plugins as part of libv4l.

Regards
Yordan
> WRT my merging plans for libv4l. I've recently done some much needed
> work to better support high-res usb cameras. I plan to do a 0.8.4 release
> with that work included real soon. Once that is done I'll change the 
> version
> in the Make.rules to 0.9.0-test and merge the plugin. Then we'll have
> some 0.9.x releases followed by some 0.9.9x release (all testing 
> releases)
> followed by a 0.10.0 which should be the first stable release with plugin
> support.
>
> Regards,
>
> Hans
>
>
> On 05/19/2011 02:36 PM, Yordan Kamenov wrote:
>> Hi,
>>
>> This is the Media Controller plugin for libv4l. It uses libv4l2 
>> plugin support
>> which is accepted by Hans De Goede, but not yet included in mainline 
>> libv4l2:
>> http://www.spinics.net/lists/linux-media/msg32017.html
>>
>> The plugin allows a traditional v4l2 applications to work with Media 
>> Controller
>> framework. The plugin is loaded when application opens /dev/video0 
>> and it
>> configures the media controller and then all ioctl's by the 
>> applicatin are
>> handled by the plugin.
>>
>> The plugin implements init, close and ioctl callbacks. The init callback
>> checks it's input file descriptor and if it coresponds to 
>> /dev/video0, then
>> the media controller is initialized and appropriate pipeline is created.
>> The close callback deinitializes the pipeline, and closes the media 
>> device.
>> The ioctl callback is responsible to handle ioctl calls from 
>> application by
>> using the media controller pipeline.
>>
>> The plugin uses media-ctl library for media controller operations:
>> http://git.ideasonboard.org/?p=media-ctl.git;a=summary
>>
>> The plugin is divided in three separate patches:
>>   * Media Controller pipelines initialization, configuration and 
>> destruction
>>   * v4l operations - uses some functionality from the first one
>>   * Plugin interface operations (init, close and ioctl) - uses 
>> functionality
>>     from first two
>>
>>
>>
>> Yordan Kamenov (3):
>>    Add files for media controller pipelines
>>    Add files for v4l operations
>>    Add libv4l2 media controller plugin interface files
>>
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