Implemented Tango.RemoteDesktop.

Implemented png 8 bit quantization.
Implemented RasterFrame bounds clipping.
Refactored VectorFrame to use indexed colors.

1 files changed, 68 insertions, 0 deletions

diff --git a/Software/Visual_Studio/Tango.RemoteDesktop/Encoders/JpegEncoder.cs b/Software/Visual_Studio/Tango.RemoteDesktop/Encoders/JpegEncoder.cs
new file mode 100644
index 000000000..744849977
--- /dev/null
+++ b/Software/Visual_Studio/Tango.RemoteDesktop/Encoders/JpegEncoder.cs
@@ -0,0 +1,68 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Tango.RemoteDesktop.Encoders
+{
+    /// <summary>
+    /// Represents an <see cref="IFrame"/> JPEG encoder.
+    /// </summary>
+    /// <seealso cref="Tango.RemoteDesktop.FrameEncoder" />
+    public class JpegEncoder : FrameEncoder
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="JpegEncoder"/> class.
+        /// </summary>
+        /// <param name="frame">The frame.</param>
+        public JpegEncoder(IFrame frame) : base(frame)
+        {
+        }
+
+        /// <summary>
+        /// Returns a stream containing the encoded frame.
+        /// </summary>
+        /// <returns></returns>
+        public override MemoryStream ToStream()
+        {
+            return ToStream(100);
+        }
+
+        /// <summary>
+        /// Returns a stream containing the encoded frame with the specified quality.
+        /// </summary>
+        /// <param name="quality">The quality.</param>
+        /// <returns></returns>
+        public virtual MemoryStream ToStream(long quality)
+        {
+            var encoderParameters = new EncoderParameters(1);
+            encoderParameters.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, quality);
+            MemoryStream ms = new MemoryStream();
+            Frame.ToBitmap().Save(ms, GetEncoder(ImageFormat.Jpeg), encoderParameters);
+            ms.Position = 0;
+            return ms;
+        }
+
+        /// <summary>
+        /// Returns a byte array containing the encoded frame with the specified quality.
+        /// </summary>
+        /// <param name="quality">The quality.</param>
+        /// <returns></returns>
+        public byte[] ToArray(long quality)
+        {
+            using (MemoryStream ms = ToStream(quality))
+            {
+                return ms.ToArray();
+            }
+        }
+
+        private ImageCodecInfo GetEncoder(ImageFormat format)
+        {
+            ImageCodecInfo[] codecs = ImageCodecInfo.GetImageDecoders();
+            return codecs.Single(codec => codec.FormatID == format.Guid);
+        }
+    }
+}