Update to newer version of CSJ2K from github.com/cureos/csj2k with modification

2017-05-16 19:41:03 -05:00
parent c719ef284c
commit 6fcb14800b
120 changed files with 9067 additions and 7812 deletions
--- a/CSJ2K/Util/BitmapImageSource.cs
+++ b/CSJ2K/Util/BitmapImageSource.cs
@@ -0,0 +1,110 @@
+// Copyright (c) 2007-2016 CSJ2K contributors.
+// Licensed under the BSD 3-Clause License.
+
+namespace CSJ2K.Util
+{
+    using System;
+    using System.Drawing;
+    using System.Drawing.Imaging;
+    using System.Linq;
+
+    using CSJ2K.j2k.image;
+
+    internal class BitmapImageSource : PortableImageSource
+    {
+        #region CONSTRUCTORS
+
+        private BitmapImageSource(Bitmap bitmap)
+            : base(
+                bitmap.Width,
+                bitmap.Height,
+                GetNumberOfComponents(bitmap.PixelFormat),
+                GetRangeBits(bitmap.PixelFormat),
+                GetSignedArray(bitmap.PixelFormat),
+                GetComponents(bitmap))
+        {
+        }
+
+        #endregion
+
+        #region METHODS
+
+
+        internal static BlkImgDataSrc Create(object imageObject)
+        {
+            var bitmap = imageObject as Bitmap;
+            return bitmap == null ? null : new BitmapImageSource(bitmap);
+        }
+
+        private static int GetNumberOfComponents(PixelFormat pixelFormat)
+        {
+            switch (pixelFormat)
+            {
+                case PixelFormat.Format16bppGrayScale:
+                case PixelFormat.Format1bppIndexed:
+                case PixelFormat.Format4bppIndexed:
+                case PixelFormat.Format8bppIndexed:
+                    return 1;
+                case PixelFormat.Format24bppRgb:
+                case PixelFormat.Format32bppArgb:
+                case PixelFormat.Format32bppPArgb:
+                case PixelFormat.Format32bppRgb:
+                    return 3;
+                default:
+                    throw new ArgumentOutOfRangeException("pixelFormat");
+            }
+        }
+
+        private static int GetRangeBits(PixelFormat pixelFormat)
+        {
+            switch (pixelFormat)
+            {
+                case PixelFormat.Format16bppGrayScale:
+                    return 16;
+                case PixelFormat.Format1bppIndexed:
+                    return 1;
+                case PixelFormat.Format4bppIndexed:
+                    return 4;
+                case PixelFormat.Format8bppIndexed:
+                case PixelFormat.Format24bppRgb:
+                case PixelFormat.Format32bppArgb:
+                case PixelFormat.Format32bppPArgb:
+                case PixelFormat.Format32bppRgb:
+                    return 8;
+                default:
+                    throw new ArgumentOutOfRangeException("pixelFormat");
+            }
+        }
+
+        private static bool[] GetSignedArray(PixelFormat pixelFormat)
+        {
+            return Enumerable.Repeat(false, GetNumberOfComponents(pixelFormat)).ToArray();
+        }
+
+        private static int[][] GetComponents(Bitmap bitmap)
+        {
+            var w = bitmap.Width;
+            var h = bitmap.Height;
+            var nc = GetNumberOfComponents(bitmap.PixelFormat);
+
+            var comps = new int[nc][];
+            for (var c = 0; c < nc; ++c) comps[c] = new int[w * h];
+
+            for (int y = 0, xy = 0; y < h; ++y)
+            {
+                for (var x = 0; x < w; ++x, ++xy)
+                {
+                    var color = bitmap.GetPixel(x, y);
+                    for (var c = 0; c < nc; ++c)
+                    {
+                        comps[c][xy] = c == 0 ? color.R : c == 1 ? color.G : color.B;
+                    }
+                }
+            }
+
+            return comps;
+        }
+
+        #endregion
+    }
+}