/************************************************************************/
#region Constructors
/// <summary>
/// Initializes a new instance of the <see cref="TransformParameters"/> class.
/// </summary>
/// <param name="targetSize">The target size.</param>
/// <param name="pixelFormat">The pixel format. Only PixelFormats.Pbgra32, Bgr24, and Gray8 are supported.</param>
/// <param name="scalePolicy">Scale policy.</param>
/// <param name="scaleQuality">Scale quality.</param>
/// <param name="region">Region of interest, or empty rectangle for all.</param>
public TransformParameters(Size targetSize, PixelFormat pixelFormat, ScalingPolicy scalePolicy, ScalingQuality scaleQuality, Rectangle region)
{
TargetSize = targetSize;
PixelFormat = pixelFormat;
ScalePolicy = scalePolicy;
ScaleQuality = scaleQuality;
Region = region;
}
public TransformParameters(RectangleF regionOfInterest, Size targetFrameSize, ScalingPolicy scalePolicy,
PixelFormat targetFormat, ScalingQuality scaleQuality)
{
RegionOfInterest = regionOfInterest;
TargetFrameSize = targetFrameSize;
TargetFormat = targetFormat;
ScaleQuality = scaleQuality;
ScalePolicy = scalePolicy;
}
private static FFmpegScalingQuality ToFFmpegScaleQuality(ScalingQuality scalingQuality)
{
return(scalingQuality switch
{
ScalingQuality.Nearest => FFmpegScalingQuality.Point,
ScalingQuality.Bilinear => FFmpegScalingQuality.Bilinear,
ScalingQuality.FastBilinear => FFmpegScalingQuality.FastBilinear,
ScalingQuality.Bicubic => FFmpegScalingQuality.Bicubic,
_ => throw new ArgumentOutOfRangeException(nameof(scalingQuality))
});
private static FFmpegScalingQuality GetFFmpegScaleQuality(ScalingQuality scalingQuality)
{
if (scalingQuality == ScalingQuality.Nearest)
{
return(FFmpegScalingQuality.Point);
}
if (scalingQuality == ScalingQuality.Bilinear)
{
return(FFmpegScalingQuality.Bilinear);
}
if (scalingQuality == ScalingQuality.Bicubic)
{
return(FFmpegScalingQuality.Bicubic);
}
throw new ArgumentOutOfRangeException(nameof(scalingQuality));
}
