/// <summary>
/// Get all the resolutions supported by the specified pixel format.
/// </summary>
/// <param name="format">Pixel format.</param>
/// <returns>Supported resolution.</returns>
public override IEnumerable <(uint Width, uint Height)> GetPixelFormatResolutions(PixelFormat format)
{
Initialize();
v4l2_frmsizeenum size = new v4l2_frmsizeenum()
{
index = 0,
pixel_format = format
};
List <(uint Width, uint Height)> result = new List <(uint Width, uint Height)>();
while (V4l2Struct(VideoSettings.VIDIOC_ENUM_FRAMESIZES, ref size) != -1)
{
result.Add((size.discrete.width, size.discrete.height));
size.index++;
}
return(result);
}
/// <summary>
/// Get all the resolutions supported by the specified pixel format.
/// </summary>
/// <param name="format">Pixel format.</param>
/// <returns>Supported resolution.</returns>
public override IEnumerable <Resolution> GetPixelFormatResolutions(PixelFormat format)
{
Initialize();
v4l2_frmsizeenum size = new v4l2_frmsizeenum()
{
index = 0,
pixel_format = format
};
List <Resolution> result = new List <Resolution>();
while (V4l2Struct(V4l2Request.VIDIOC_ENUM_FRAMESIZES, ref size) != -1)
{
Resolution resolution;
switch (size.type)
{
case v4l2_frmsizetypes.V4L2_FRMSIZE_TYPE_DISCRETE:
resolution = new Resolution
{
Type = ResolutionType.Discrete,
MinHeight = size.discrete.height,
MaxHeight = size.discrete.height,
StepHeight = 0,
MinWidth = size.discrete.width,
MaxWidth = size.discrete.width,
StepWidth = 0,
};
break;
case v4l2_frmsizetypes.V4L2_FRMSIZE_TYPE_CONTINUOUS:
resolution = new Resolution
{
Type = ResolutionType.Continuous,
MinHeight = size.stepwise.min_height,
MaxHeight = size.stepwise.max_height,
StepHeight = 1,
MinWidth = size.stepwise.min_width,
MaxWidth = size.stepwise.max_width,
StepWidth = 1,
};
break;
case v4l2_frmsizetypes.V4L2_FRMSIZE_TYPE_STEPWISE:
resolution = new Resolution
{
Type = ResolutionType.Stepwise,
MinHeight = size.stepwise.min_height,
MaxHeight = size.stepwise.max_height,
StepHeight = size.stepwise.step_height,
MinWidth = size.stepwise.min_width,
MaxWidth = size.stepwise.max_width,
StepWidth = size.stepwise.step_width,
};
break;
default:
resolution = new Resolution
{
Type = ResolutionType.Discrete,
MinHeight = 0,
MaxHeight = 0,
StepHeight = 0,
MinWidth = 0,
MaxWidth = 0,
StepWidth = 0,
};
break;
}
result.Add(resolution);
size.index++;
}
return(result);
}
