예제 #1
0
        private void ProcessFrame(DesktopFrame frame)
        {
            // Get the desktop capture texture
            var mapSource = _mDevice.ImmediateContext.MapSubresource(_desktopImageTexture, 0, MapMode.Read,
                                                                     MapFlags.None);
            var bounds = (Rectangle)_mOutputDesc.DesktopBounds;

            FinalImage = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
            var boundsRect = new global::System.Drawing.Rectangle(0, 0, bounds.Width, bounds.Height);
            // Copy pixels from screen capture Texture to GDI bitmap
            var mapDest   = FinalImage.LockBits(boundsRect, ImageLockMode.WriteOnly, FinalImage.PixelFormat);
            var sourcePtr = mapSource.DataPointer;
            var destPtr   = mapDest.Scan0;

            for (var y = 0; y < bounds.Height; y++)
            {
                // Copy a single line
                Utilities.CopyMemory(destPtr, sourcePtr, bounds.Width * 4);

                // Advance pointers
                sourcePtr = IntPtr.Add(sourcePtr, mapSource.RowPitch);
                destPtr   = IntPtr.Add(destPtr, mapDest.Stride);
            }

            // Release source and dest locks
            FinalImage.UnlockBits(mapDest);
            _mDevice.ImmediateContext.UnmapSubresource(_desktopImageTexture, 0);
            frame.DesktopImage = (Bitmap)FinalImage.Clone();
        }
예제 #2
0
        /// <summary>
        ///     Retrieves the latest desktop image and associated metadata.
        /// </summary>
        public DesktopFrame GetLatestFrame()
        {
            var frame = new DesktopFrame();
            // Try to get the latest frame; this may timeout
            var retrievalTimedOut = RetrieveFrame();

            if (retrievalTimedOut)
            {
                return(null);
            }
            try
            {
                RetrieveFrameMetadata(frame);
                //we don't need cursor info
                //RetrieveCursorMetadata(frame);
                //we dont need a full frame
                //ProcessFrame(frame);
            }
            catch
            {
                ReleaseFrame();
            }
            try
            {
                ReleaseFrame();
            }
            catch
            {
                //    throw new DesktopDuplicationException("Couldn't release frame.");
            }
            return(frame);
        }
예제 #3
0
        private void RetrieveFrameMetadata(DesktopFrame frame)
        {
            if (_frameInfo.TotalMetadataBufferSize > 0)
            {
                // Get moved regions
                var movedRegionsLength = 0;
                var movedRectangles    = new OutputDuplicateMoveRectangle[_frameInfo.TotalMetadataBufferSize];
                _mDeskDupl.GetFrameMoveRects(movedRectangles.Length, movedRectangles, out movedRegionsLength);
                frame.MovedRegions =
                    new MovedRegion[movedRegionsLength / Marshal.SizeOf(typeof(OutputDuplicateMoveRectangle))];
                for (var i = 0; i < frame.MovedRegions.Length; i++)
                {
                    var destRect = (Rectangle)movedRectangles[i].DestinationRect;
                    frame.MovedRegions[i] = new MovedRegion
                    {
                        Source      = new Point(movedRectangles[i].SourcePoint.X, movedRectangles[i].SourcePoint.Y),
                        Destination =
                            new global::System.Drawing.Rectangle(destRect.X, destRect.Y, destRect.Width, destRect.Height)
                    };
                }

                // Get dirty regions
                var dirtyRegionsLength = 0;
                var dirtyRectangles    = new RawRectangle[_frameInfo.TotalMetadataBufferSize];
                _mDeskDupl.GetFrameDirtyRects(dirtyRectangles.Length, dirtyRectangles, out dirtyRegionsLength);
                frame.UpdatedRegions =
                    new global::System.Drawing.Rectangle[dirtyRegionsLength / Marshal.SizeOf(typeof(Rectangle))];
                frame.FinishedRegions = new FinishedRegions[frame.UpdatedRegions.Length];
                for (var i = 0; i < frame.UpdatedRegions.Length; i++)
                {
                    var dirtyRect = (Rectangle)dirtyRectangles[i];
                    var rect      = new global::System.Drawing.Rectangle(dirtyRect.X, dirtyRect.Y, dirtyRect.Width,
                                                                         dirtyRect.Height);


                    frame.FinishedRegions[i] = new FinishedRegions
                    {
                        Destination = rect,
                        Frame       = ExtractRect(rect.X, rect.Y, rect.Width, rect.Height)
                    };
                }
            }
            else
            {
                frame.MovedRegions   = new MovedRegion[0];
                frame.UpdatedRegions = new global::System.Drawing.Rectangle[0];
            }
        }