public static CVPixelBuffer? Create (nint width, nint height, CVPixelFormatType pixelFormatType, byte[][] planes, nint[] planeWidths, nint[] planeHeights, nint[] planeBytesPerRow, CVPixelBufferAttributes pixelBufferAttributes, out CVReturn status)
{
IntPtr handle;
IntPtr[] addresses;
PlaneData data;
GCHandle data_handle;
if (planes == null)
throw new ArgumentNullException (nameof (planes));
if (planeWidths == null)
throw new ArgumentNullException (nameof (planeWidths));
if (planeHeights == null)
throw new ArgumentNullException (nameof (planeHeights));
if (planeBytesPerRow == null)
throw new ArgumentNullException (nameof (planeBytesPerRow));
var planeCount = planes.Length;
if (planeWidths.Length != planeCount)
throw new ArgumentOutOfRangeException (nameof (planeWidths), "The length of planeWidths does not match the number of planes");
if (planeHeights.Length != planeCount)
throw new ArgumentOutOfRangeException (nameof (planeWidths), "The length of planeHeights does not match the number of planes");
if (planeBytesPerRow.Length != planeCount)
throw new ArgumentOutOfRangeException (nameof (planeWidths), "The length of planeBytesPerRow does not match the number of planes");
addresses = new IntPtr [planeCount];
data = new PlaneData ();
data.dataHandles = new GCHandle [planeCount];
for (int i = 0; i < planeCount; i++) {
data.dataHandles[i] = GCHandle.Alloc (planes [i], GCHandleType.Pinned); // This can't use unsafe code because we need to get the pointer for an unbound number of objects.
addresses[i] = data.dataHandles[i].AddrOfPinnedObject ();
}
data_handle = GCHandle.Alloc (data);
IntPtr data_handle_ptr = GCHandle.ToIntPtr (data_handle);
status = CVPixelBufferCreateWithPlanarBytes (IntPtr.Zero,
width, height, pixelFormatType, IntPtr.Zero, 0,
planeCount, addresses, planeWidths, planeHeights, planeBytesPerRow,
releasePlanarBytesCallback, data_handle_ptr,
DictionaryContainerHelper.GetHandle (pixelBufferAttributes), out handle);
if (status != CVReturn.Success) {
ReleasePlanarBytesCallback (data_handle_ptr, IntPtr.Zero, 0, 0, IntPtr.Zero);
return null;
}
return new CVPixelBuffer (handle, true);
}
public static CVPixelBuffer? Create (nint width, nint height, CVPixelFormatType pixelFormatType, byte[] data, nint bytesPerRow, CVPixelBufferAttributes pixelBufferAttributes, out CVReturn status)
{
IntPtr handle;
GCHandle gchandle;
if (data == null)
throw new ArgumentNullException (nameof (data));
if (data.Length < height * bytesPerRow)
throw new ArgumentOutOfRangeException (nameof (data), "The length of data is smaller than height * bytesPerRow");
gchandle = GCHandle.Alloc (data, GCHandleType.Pinned); // This requires a pinned GCHandle, because unsafe code is scoped to the current block, and the address of the byte array will be used after this function returns.
status = CVPixelBufferCreateWithBytes (IntPtr.Zero, width, height, pixelFormatType, gchandle.AddrOfPinnedObject (), bytesPerRow, releaseBytesCallback, GCHandle.ToIntPtr (gchandle), DictionaryContainerHelper.GetHandle (pixelBufferAttributes), out handle);
if (status != CVReturn.Success) {
gchandle.Free ();
return null;
}
return new CVPixelBuffer (handle, true);
}
public static CVPixelBuffer Create(nint width, nint height, CVPixelFormatType pixelFormatType, byte[] data, nint bytesPerRow, CVPixelBufferAttributes pixelBufferAttributes, out CVReturn status)
{
IntPtr handle;
GCHandle gchandle;
if (data == null)
{
throw new ArgumentNullException(nameof(data));
}
if (data.Length < height * bytesPerRow)
{
throw new ArgumentOutOfRangeException(nameof(data), "The length of data is smaller than height * bytesPerRow");
}
gchandle = GCHandle.Alloc(data, GCHandleType.Pinned);
status = CVPixelBufferCreateWithBytes(IntPtr.Zero, width, height, pixelFormatType, gchandle.AddrOfPinnedObject(), bytesPerRow, releaseBytesCallback, GCHandle.ToIntPtr(gchandle), DictionaryContainerHelper.GetHandle(pixelBufferAttributes), out handle);
if (status != CVReturn.Success)
{
gchandle.Free();
return(null);
}
return(new CVPixelBuffer(handle, true));
}
