Implements video capture on v4l2camerasrc by using the mode property,
when mode is set to video, the pad probe pushes a new segment
and starts pushing buffers on the pad, when it the property is
sent back to preview, the pad probe pushes an EOS and stops
pushing buffers.
This is controlled by a Recording State variable, that is protected
by the GST_OBJECT_LOCK. I don't think locking for every buffer is
nice, so we could find an alternative lockless way here.
Use 'mode' enum definition from gstcamerabin-enum file to avoid
conflicts between v4l2camerasrc and gstcamerabin2 modes.
For now there is a MODE_PREVIEW there that is only used on the
camerasrc, not sure if we are keeping it at the future, but for
now this works.
Adds mode property to camerabin2, allowing users to
select between video and stills capture. Also adds
start/stop capture actions to trigger and stop
capturing
Adds an bin that is responsible for encoding and saving video
streams to files.
For now it is simply a ffmpegcolorspace ! theoraenc ! oggmux !
filesink bin.
Still uncapable of recording audio.
Adds viewfinder bin element, one of the modules of camerabin2
that is responsible for displaying the video from the camera.
For now it is only a bin with ffmpegcolorspace ! videoscale !
autovideosink
