/// <summary>
/// Query controls value from the video device.
/// </summary>
/// <param name="type">The type of a video device's control.</param>
/// <returns>The default and current values of a video device's control.</returns>
public override VideoDeviceValue GetVideoDeviceValue(VideoDeviceValueType type)
{
Initialize();
// Get default value
v4l2_queryctrl query = new v4l2_queryctrl
{
id = type
};
V4l2Struct(VideoSettings.VIDIOC_QUERYCTRL, ref query);
// Get current value
v4l2_control ctrl = new v4l2_control
{
id = type,
};
V4l2Struct(VideoSettings.VIDIOC_G_CTRL, ref ctrl);
return(new VideoDeviceValue
{
Name = type.ToString(),
Minimum = query.minimum,
Maximum = query.maximum,
Step = query.step,
DefaultValue = query.default_value,
CurrentValue = ctrl.value
});
}
/// <summary>
/// Query controls value from the video device.
/// </summary>
/// <param name="type">The type of a video device's control.</param>
/// <returns>The default and current values of a video device's control.</returns>
public override VideoDeviceValue GetVideoDeviceValue(VideoDeviceValueType type)
{
Initialize();
// Get default value
InteropVideodev2.v4l2_queryctrl query = new InteropVideodev2.v4l2_queryctrl
{
id = type
};
V4l2Struct(InteropVideodev2.V4l2Request.VIDIOC_QUERYCTRL, ref query);
// Get current value
InteropVideodev2.v4l2_control ctrl = new InteropVideodev2.v4l2_control
{
id = type,
};
V4l2Struct(InteropVideodev2.V4l2Request.VIDIOC_G_CTRL, ref ctrl);
return(new VideoDeviceValue(
type.ToString(),
query.minimum,
query.maximum,
query.step,
query.default_value,
ctrl.value));
}
/// <summary> /// Query controls value from the video device. /// </summary> /// <param name="type">The type of a video device's control.</param> /// <returns>The default and current values of a video device's control.</returns> public abstract VideoDeviceValue GetVideoDeviceValue(VideoDeviceValueType type);
