Exemplo n.º 1
0
        private unsafe void _processBitmap(SoftwareBitmap bitmap, TimeSpan duration)
        {
            using (var buffer = bitmap.LockBuffer(BitmapBufferAccessMode.Read))
            {
                var reference = (IMemoryBufferByteAccess)buffer.CreateReference();

                reference.GetBuffer(out byte *nativeBuffer, out uint capacity);
                byte[] frameBuffer = new byte[capacity];
                for (int i = 0; i < bitmap.PixelHeight; i++)
                {
                    for (int j = 0; j < bitmap.PixelWidth; j++)
                    {
                        var indexManaged = (i * bitmap.PixelWidth + j) * 4;
                        var indexNative  = ((bitmap.PixelHeight - 1 - i) * bitmap.PixelWidth + j) * 4;
                        frameBuffer[indexManaged + 0] = nativeBuffer[indexNative + 0];
                        frameBuffer[indexManaged + 1] = nativeBuffer[indexNative + 1];
                        frameBuffer[indexManaged + 2] = nativeBuffer[indexNative + 2];
                        frameBuffer[indexManaged + 3] = nativeBuffer[indexNative + 3];
                    }
                }
                _mediaEncoder.WriteVideoFrame(frameBuffer, duration.Ticks);
            }
        }