Added resolution params to the video handler

MediaBrowser.Common/Drawing/DrawingUtils.cs

@@ -0,0 +1,81 @@
+using System;
+using System.Drawing;
+
+namespace MediaBrowser.Common.Drawing
+{
+    public static class DrawingUtils
+    {
+        /// <summary>
+        /// Resizes a set of dimensions
+        /// </summary>
+        public static Size Resize(int currentWidth, int currentHeight, int? width, int? height, int? maxWidth, int? maxHeight)
+        {
+            return Resize(new Size(currentWidth, currentHeight), width, height, maxWidth, maxHeight);
+        }
+
+        /// <summary>
+        /// Resizes a set of dimensions
+        /// </summary>
+        /// <param name="size">The original size object</param>
+        /// <param name="width">A new fixed width, if desired</param>
+        /// <param name="height">A new fixed neight, if desired</param>
+        /// <param name="maxWidth">A max fixed width, if desired</param>
+        /// <param name="maxHeight">A max fixed height, if desired</param>
+        /// <returns>A new size object</returns>
+        public static Size Resize(Size size, int? width, int? height, int? maxWidth, int? maxHeight)
+        {
+            decimal newWidth = size.Width;
+            decimal newHeight = size.Height;
+
+            if (width.HasValue && height.HasValue)
+            {
+                newWidth = width.Value;
+                newHeight = height.Value;
+            }
+
+            else if (height.HasValue)
+            {
+                newWidth = GetNewWidth(newHeight, newWidth, height.Value);
+                newHeight = height.Value;
+            }
+
+            else if (width.HasValue)
+            {
+                newHeight = GetNewHeight(newHeight, newWidth, width.Value);
+                newWidth = width.Value;
+            }
+
+            if (maxHeight.HasValue && maxHeight < newHeight)
+            {
+                newWidth = GetNewWidth(newHeight, newWidth, maxHeight.Value);
+                newHeight = maxHeight.Value;
+            }
+
+            if (maxWidth.HasValue && maxWidth < newWidth)
+            {
+                newHeight = GetNewHeight(newHeight, newWidth, maxWidth.Value);
+                newWidth = maxWidth.Value;
+            }
+
+            return new Size(Convert.ToInt32(newWidth), Convert.ToInt32(newHeight));
+        }
+
+        private static decimal GetNewWidth(decimal currentHeight, decimal currentWidth, int newHeight)
+        {
+            decimal scaleFactor = newHeight;
+            scaleFactor /= currentHeight;
+            scaleFactor *= currentWidth;
+
+            return scaleFactor;
+        }
+
+        private static decimal GetNewHeight(decimal currentHeight, decimal currentWidth, int newWidth)
+        {
+            decimal scaleFactor = newWidth;
+            scaleFactor /= currentWidth;
+            scaleFactor *= currentHeight;
+
+            return scaleFactor;
+        }
+    }
+}

MediaBrowser.Common/MediaBrowser.Common.csproj

@@ -41,6 +41,7 @@
     <Reference Include="System.ComponentModel.Composition" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Drawing" />
     <Reference Include="System.Reactive, Version=1.0.10621.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\packages\Rx-Main.1.0.11226\lib\Net4\System.Reactive.dll</HintPath>
@@ -57,6 +58,7 @@
   <ItemGroup>
     <Compile Include="Configuration\ApplicationPaths.cs" />
     <Compile Include="Configuration\BaseApplicationConfiguration.cs" />
+    <Compile Include="Drawing\DrawingUtils.cs" />
     <Compile Include="Events\GenericItemEventArgs.cs" />
     <Compile Include="Net\Handlers\StaticFileHandler.cs" />
     <Compile Include="Net\MimeTypes.cs" />