/// <summary>
/// Makes multi-channel array out of several single-channel arrays
/// </summary>
///<param name="gpuMats">
///An array of single channel GpuMat where each item
///in the array represent a single channel of the GpuMat
///</param>
/// <param name="stream">Use a Stream to call the function asynchronously (non-blocking) or null to call the function synchronously (blocking).</param>
public void MergeFrom(GpuMat <TDepth>[] gpuMats, Stream stream)
{
Debug.Assert(NumberOfChannels == gpuMats.Length, "Number of channels does not agrees with the length of gpuMats");
//If single channel, perform a copy
if (NumberOfChannels == 1)
{
if (stream == null)
{
GpuInvoke.Copy(gpuMats[0].Ptr, _ptr, IntPtr.Zero);
}
else
{
stream.Copy <TDepth>(gpuMats[0], this);
}
}
//handle multiple channels
Size size = Size;
IntPtr[] ptrs = new IntPtr[gpuMats.Length];
for (int i = 0; i < gpuMats.Length; i++)
{
Debug.Assert(gpuMats[i].Size == size, "Size mismatch");
ptrs[i] = gpuMats[i].Ptr;
}
GCHandle handle = GCHandle.Alloc(ptrs, GCHandleType.Pinned);
GpuInvoke.Merge(handle.AddrOfPinnedObject(), _ptr, stream);
handle.Free();
}
///<summary>
///Split current Image into an array of gray scale images where each element
///in the array represent a single color channel of the original image
///</summary>
///<param name="gpuMats">
///An array of single channel GpuMat where each item
///in the array represent a single channel of the original GpuMat
///</param>
/// <param name="stream">Use a Stream to call the function asynchronously (non-blocking) or null to call the function synchronously (blocking).</param>
public void SplitInto(GpuMat <TDepth>[] gpuMats, Stream stream)
{
Debug.Assert(NumberOfChannels == gpuMats.Length, "Number of channels does not agrees with the length of gpuMats");
if (NumberOfChannels == 1)
{
//If single channel, return a copy
if (stream == null)
{
GpuInvoke.Copy(_ptr, gpuMats[0], IntPtr.Zero);
}
else
{
stream.Copy <TDepth>(this, gpuMats[0]);
}
}
else
{
//handle multiple channels
Size size = Size;
IntPtr[] ptrs = new IntPtr[gpuMats.Length];
for (int i = 0; i < ptrs.Length; i++)
{
Debug.Assert(gpuMats[i].Size == size, "Size mismatch");
ptrs[i] = gpuMats[i].Ptr;
}
GCHandle handle = GCHandle.Alloc(ptrs, GCHandleType.Pinned);
GpuInvoke.Split(_ptr, handle.AddrOfPinnedObject(), stream);
handle.Free();
}
}
