public static AudioFormat SingleChannel(AudioFormat other, int componentIndex)
{
int otherComponentsLength = other.Components.Length;
if (otherComponentsLength == 1)
{
return(other);
}
if (componentIndex > otherComponentsLength)
{
throw new System.ArgumentOutOfRangeException("componentIndex");
}
Media.Codec.MediaComponent componentNeeded = other.Components[componentIndex];
return(new AudioFormat(other.SampleRate, other.IsSigned, other.ByteOrder, other.DataLayout, Common.Extensions.Linq.LinqExtensions.Yield(componentNeeded).ToArray()));
}
public RGB(Image source, Image dest)
: base(source, dest, Codec.TransformationQuality.Highest)
{
//Should be exceptions.
//Should have a utility method which checks for all required components in one shot.
if (source.MediaFormat.GetComponentById(Media.Codecs.Image.ImageFormat.RedChannelId) == null)
{
return;
}
if (source.MediaFormat.GetComponentById(Media.Codecs.Image.ImageFormat.BlueChannelId) == null)
{
return;
}
if (source.MediaFormat.GetComponentById(Media.Codecs.Image.ImageFormat.GreenChannelId) == null)
{
return;
}
//Only can convert to YUV right now, not AYUV or YUVA or any other type.
if (dest.ImageFormat.Components.Length > 3)
{
return;
}
//Check for the luma channel
Media.Codec.MediaComponent component = source.MediaFormat.GetComponentById(Media.Codecs.Image.ImageFormat.LumaChannelId);
//Ensure it at the first component
if (component == null || source.MediaFormat.IndexOf(component) != 0)
{
return;
}
//Check for the chroma major component
component = source.MediaFormat.GetComponentById(Media.Codecs.Image.ImageFormat.ChromaMajorChannelId);
//Ensure it at the second component
if (component == null || source.MediaFormat.IndexOf(component) != 1)
{
return;
}
//Check for the chroma minor component
component = source.MediaFormat.GetComponentById(Media.Codecs.Image.ImageFormat.ChromaMinorChannelId);
//Ensure it at the last component
if (component == null || source.MediaFormat.IndexOf(component) != 2)
{
return;
}
//Ensure the destination image has been configured for sub sampling
if (false == dest.ImageFormat.IsSubSampled)
{
return;
}
//Only can convert to Planar YUV right now (420)
if (dest.ImageFormat.DataLayout != Codec.DataLayout.Planar)
{
return;
}
//Should be a constant in ImageFormat, 1 looks weird but >> 1 divides by 2, >> 2 by 4
//Could also change the WidthsAndHights to be an enum or Rational... SubSampling...
if (dest.ImageFormat.Heights[1] != 1)
{
return;
}
if (dest.ImageFormat.Widths[1] != 1)
{
return;
}
}