/// <summary>
/// Returns the relative number of chroma (u or v) to luma (y) samples according to yuv format.
/// </summary>
/// <param name="format">the yuv format</param>
/// <returns>relative number of samples (1, 0.5 or 0.25)</returns>
public static float getLum2Chrom(YuvFormat format)
{
switch (format)
{
case YuvFormat.YUV444:
return 1.0f;
case YuvFormat.YUV422_UYVY:
return 0.5f;
case YuvFormat.YUV411_Y41P:
return 0.25f;
case YuvFormat.YUV420_IYUV:
return 0.25f;
default:
throw new ArgumentException("Invalid YuvFormat set in VideoInfo.");
}
}
/// <summary>
/// Gets the kind of <see cref="ChrominanceSubsampling"/> used by a given YuvFormat.
/// </summary>
/// <returns>The subsampling level.</returns>
/// <param name="yuvFormat">The YuvFormat.</param>
public static ChrominanceSubsampling GetSubsamplingLevel(this YuvFormat yuvFormat)
{
return(YUVSubsamp[(int)yuvFormat]);
}
