public void AddVideoFrame <T>(T[] pixels, int stride, int bpp, double timestamp, TimestampDomain domain, int frameNumber, VideoStreamProfile profile)
{
// TODO: avoid copy by adding void* user_data to native methods, so we can pass GCHandle.ToIntPtr() and free in deleter
IntPtr hglobal = Marshal.AllocHGlobal(profile.Height * stride);
var handle = GCHandle.Alloc(pixels, GCHandleType.Pinned);
try
{
NativeMethods.Memcpy(hglobal, handle.AddrOfPinnedObject(), profile.Height * stride);
}
finally
{
handle.Free();
}
AddVideoFrame(new SoftwareVideoFrame
{
pixels = hglobal,
deleter = (p) => { Marshal.FreeHGlobal(p); },
stride = stride,
bpp = bpp,
timestamp = timestamp,
domain = domain,
frame_number = frameNumber,
profile = profile.Handle
});
}
/// <summary>
/// Copy data from pointer
/// </summary>
/// <param name="ptr">source pointer</param>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="ptr"/> is null</exception>
public void CopyFrom(IntPtr ptr)
{
if (ptr == IntPtr.Zero)
{
throw new ArgumentNullException(nameof(ptr));
}
NativeMethods.Memcpy(Data, ptr, Stride * Height);
}
private void Copy <T>(IntPtr src, IntPtr dst)
{
Debug.Assert(src != IntPtr.Zero);
Debug.Assert(dst != IntPtr.Zero);
NativeMethods.Memcpy(dst, src, Count * Marshal.SizeOf(typeof(T)));
}
private void Copy <T>(IntPtr src, IntPtr dst, int size)
{
Debug.Assert(src != IntPtr.Zero);
Debug.Assert(dst != IntPtr.Zero);
NativeMethods.Memcpy(dst, src, size);
}