mcs/class/System.Drawing/Test/System.Drawing.Imaging/GifCodecTest.cs

   1 //
   2 // GIF Codec class testing unit
   3 //
   4 // Authors:
   5 //      Jordi Mas i Hernàndez (jordi@ximian.com)
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // Copyright (C) 2006, 2007 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System;
  31 using System.Drawing;
  32 using System.Drawing.Imaging;
  33 using System.IO;
  34 using System.Security.Permissions;
  35 using System.Text;
  36 using NUnit.Framework;
  37
  38 namespace MonoTests.System.Drawing.Imaging {
  39
  40         [TestFixture]
  41         public class GifCodecTest {
  42
  43                 /* Get suffix to add to the filename */
  44                 internal string getOutSufix ()
  45                 {
  46                         string s;
  47
  48                         int p = (int) Environment.OSVersion.Platform;
  49                         if ((p == 4) || (p == 128) || (p == 6))
  50                                 s = "-unix";
  51                         else
  52                                 s = "-windows";
  53
  54                         if (Type.GetType ("Mono.Runtime", false) == null)
  55                                 s += "-msnet";
  56                         else
  57                                 s += "-mono";
  58
  59                         return s;
  60                 }
  61
  62                 /* Get the input directory depending on the runtime*/
  63                 internal string getInFile (string file)
  64                 {
  65                         string sRslt = Path.GetFullPath ("../System.Drawing/" + file);
  66
  67                         if (!File.Exists (sRslt))
  68                                 sRslt = "Test/System.Drawing/" + file;
  69
  70                         return sRslt;
  71                 }
  72
  73                 /* Checks bitmap features on a know 1bbp bitmap */
  74                 /* Checks bitmap features on a know 1bbp bitmap */
  75                 private void Bitmap8bitsFeatures (string filename)
  76                 {
  77                         using (Bitmap bmp = new Bitmap (filename)) {
  78                                 GraphicsUnit unit = GraphicsUnit.World;
  79                                 RectangleF rect = bmp.GetBounds (ref unit);
  80
  81                                 Assert.AreEqual (PixelFormat.Format8bppIndexed, bmp.PixelFormat);
  82                                 Assert.AreEqual (110, bmp.Width, "bmp.Width");
  83                                 Assert.AreEqual (100, bmp.Height, "bmp.Height");
  84
  85                                 Assert.AreEqual (0, rect.X, "rect.X");
  86                                 Assert.AreEqual (0, rect.Y, "rect.Y");
  87                                 Assert.AreEqual (110, rect.Width, "rect.Width");
  88                                 Assert.AreEqual (100, rect.Height, "rect.Height");
  89
  90                                 Assert.AreEqual (110, bmp.Size.Width, "bmp.Size.Width");
  91                                 Assert.AreEqual (100, bmp.Size.Height, "bmp.Size.Height");
  92                         }
  93                 }
  94
  95                 [Test]
  96                 public void Bitmap8bitsFeatures_Gif89 ()
  97                 {
  98                         Bitmap8bitsFeatures (getInFile ("bitmaps/nature24bits.gif"));
  99                 }
 100
 101                 [Test]
 102                 public void Bitmap8bitsFeatures_Gif87 ()
 103                 {
 104                         Bitmap8bitsFeatures (getInFile ("bitmaps/nature24bits87.gif"));
 105                 }
 106
 107                 private void Bitmap8bitsPixels (string filename)
 108                 {
 109                         using (Bitmap bmp = new Bitmap (filename)) {
 110 #if false
 111                                 for (int x = 0; x < bmp.Width; x += 32) {
 112                                         for (int y = 0; y < bmp.Height; y += 32)
 113                                                 Console.WriteLine ("\t\t\t\tAssert.AreEqual ({0}, bmp.GetPixel ({1}, {2}).ToArgb (), \"{1},{2}\");", bmp.GetPixel (x, y).ToArgb (), x, y);
 114                                 }
 115 #else
 116                                 // sampling values from a well known bitmap
 117                                 Assert.AreEqual (-10644802, bmp.GetPixel (0, 0).ToArgb (), "0,0");
 118                                 Assert.AreEqual (-12630705, bmp.GetPixel (0, 32).ToArgb (), "0,32");
 119                                 Assert.AreEqual (-14537409, bmp.GetPixel (0, 64).ToArgb (), "0,64");
 120                                 Assert.AreEqual (-14672099, bmp.GetPixel (0, 96).ToArgb (), "0,96");
 121                                 Assert.AreEqual (-526863, bmp.GetPixel (32, 0).ToArgb (), "32,0");
 122                                 Assert.AreEqual (-10263970, bmp.GetPixel (32, 32).ToArgb (), "32,32");
 123                                 Assert.AreEqual (-10461317, bmp.GetPixel (32, 64).ToArgb (), "32,64");
 124                                 Assert.AreEqual (-9722415, bmp.GetPixel (32, 96).ToArgb (), "32,96");
 125                                 Assert.AreEqual (-131076, bmp.GetPixel (64, 0).ToArgb (), "64,0");
 126                                 Assert.AreEqual (-2702435, bmp.GetPixel (64, 32).ToArgb (), "64,32");
 127                                 Assert.AreEqual (-6325922, bmp.GetPixel (64, 64).ToArgb (), "64,64");
 128                                 Assert.AreEqual (-12411924, bmp.GetPixel (64, 96).ToArgb (), "64,96");
 129                                 Assert.AreEqual (-131076, bmp.GetPixel (96, 0).ToArgb (), "96,0");
 130                                 Assert.AreEqual (-7766649, bmp.GetPixel (96, 32).ToArgb (), "96,32");
 131                                 Assert.AreEqual (-11512986, bmp.GetPixel (96, 64).ToArgb (), "96,64");
 132                                 Assert.AreEqual (-12616230, bmp.GetPixel (96, 96).ToArgb (), "96,96");
 133 #endif
 134                         }
 135                 }
 136
 137                 [Test]
 138                 public void Bitmap8bitsPixels_Gif89 ()
 139                 {
 140                         Bitmap8bitsPixels (getInFile ("bitmaps/nature24bits.gif"));
 141                 }
 142
 143                 [Test]
 144                 public void Bitmap8bitsPixels_Gif87 ()
 145                 {
 146                         Bitmap8bitsPixels (getInFile ("bitmaps/nature24bits87.gif"));
 147                 }
 148
 149                 [Test]
 150                 public void Bitmap8bitsData ()
 151                 {
 152                         string sInFile = getInFile ("bitmaps/nature24bits.gif");
 153                         using (Bitmap bmp = new Bitmap (sInFile)) {
 154                                 BitmapData data = bmp.LockBits (new Rectangle (0, 0, bmp.Width, bmp.Height), ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
 155                                 try {
 156                                         Assert.AreEqual (bmp.Height, data.Height, "Height");
 157                                         Assert.AreEqual (bmp.Width, data.Width, "Width");
 158                                         Assert.AreEqual (PixelFormat.Format24bppRgb, data.PixelFormat, "PixelFormat");
 159                                         Assert.AreEqual (332, data.Stride, "Stride");
 160                                         int size = data.Height * data.Stride;
 161                                         unsafe {
 162                                                 byte* scan = (byte*) data.Scan0;
 163 #if false
 164                                                 // 1009 is the first prime after 1000 (so we're not affected by a recurring pattern)
 165                                                 for (int p = 0; p < size; p += 1009) {
 166                                                         Console.WriteLine ("\t\t\t\t\t\tAssert.AreEqual ({0}, *(scan + {1}), \"{1}\");", *(scan + p), p);
 167                                                 }
 168 #else
 169                                                 // sampling values from a well known bitmap
 170                                                 Assert.AreEqual (190, *(scan + 0), "0");
 171                                                 Assert.AreEqual (217, *(scan + 1009), "1009");
 172                                                 Assert.AreEqual (120, *(scan + 2018), "2018");
 173                                                 Assert.AreEqual (253, *(scan + 3027), "3027");
 174                                                 Assert.AreEqual (233, *(scan + 4036), "4036");
 175                                                 Assert.AreEqual (176, *(scan + 5045), "5045");
 176                                                 Assert.AreEqual (151, *(scan + 6054), "6054");
 177                                                 Assert.AreEqual (220, *(scan + 7063), "7063");
 178                                                 Assert.AreEqual (139, *(scan + 8072), "8072");
 179                                                 Assert.AreEqual (121, *(scan + 9081), "9081");
 180                                                 Assert.AreEqual (160, *(scan + 10090), "10090");
 181                                                 Assert.AreEqual (92, *(scan + 11099), "11099");
 182                                                 Assert.AreEqual (96, *(scan + 12108), "12108");
 183                                                 Assert.AreEqual (64, *(scan + 13117), "13117");
 184                                                 Assert.AreEqual (156, *(scan + 14126), "14126");
 185                                                 Assert.AreEqual (68, *(scan + 15135), "15135");
 186                                                 Assert.AreEqual (156, *(scan + 16144), "16144");
 187                                                 Assert.AreEqual (84, *(scan + 17153), "17153");
 188                                                 Assert.AreEqual (55, *(scan + 18162), "18162");
 189                                                 Assert.AreEqual (68, *(scan + 19171), "19171");
 190                                                 Assert.AreEqual (116, *(scan + 20180), "20180");
 191                                                 Assert.AreEqual (61, *(scan + 21189), "21189");
 192                                                 Assert.AreEqual (69, *(scan + 22198), "22198");
 193                                                 Assert.AreEqual (75, *(scan + 23207), "23207");
 194                                                 Assert.AreEqual (61, *(scan + 24216), "24216");
 195                                                 Assert.AreEqual (66, *(scan + 25225), "25225");
 196                                                 Assert.AreEqual (40, *(scan + 26234), "26234");
 197                                                 Assert.AreEqual (55, *(scan + 27243), "27243");
 198                                                 Assert.AreEqual (53, *(scan + 28252), "28252");
 199                                                 Assert.AreEqual (215, *(scan + 29261), "29261");
 200                                                 Assert.AreEqual (99, *(scan + 30270), "30270");
 201                                                 Assert.AreEqual (67, *(scan + 31279), "31279");
 202                                                 Assert.AreEqual (142, *(scan + 32288), "32288");
 203 #endif
 204                                         }
 205                                 }
 206                                 finally {
 207                                         bmp.UnlockBits (data);
 208                                 }
 209                         }
 210                 }
 211
 212                 [Test]
 213                 public void Interlaced ()
 214                 {
 215                         string sInFile = getInFile ("bitmaps/81773-interlaced.gif");
 216                         using (Bitmap bmp = new Bitmap (sInFile)) {
 217                                 for (int i = 0; i < 255; i++) {
 218                                         Color c = bmp.GetPixel (0, i);
 219                                         Assert.AreEqual (255, c.A, "A" + i.ToString ());
 220                                         Assert.AreEqual (i, c.R, "R" + i.ToString ());
 221                                         Assert.AreEqual (i, c.G, "G" + i.ToString ());
 222                                         Assert.AreEqual (i, c.B, "B" + i.ToString ());
 223                                 }
 224                         }
 225                 }
 226
 227                 private void Save (PixelFormat original, PixelFormat expected, bool exactColorCheck)
 228                 {
 229                         string sOutFile = String.Format ("linerect{0}-{1}.gif", getOutSufix (), expected.ToString ());
 230
 231                         // Save
 232                         Bitmap bmp = new Bitmap (100, 100, original);
 233                         Graphics gr = Graphics.FromImage (bmp);
 234
 235                         using (Pen p = new Pen (Color.Red, 2)) {
 236                                 gr.DrawLine (p, 10.0F, 10.0F, 90.0F, 90.0F);
 237                                 gr.DrawRectangle (p, 10.0F, 10.0F, 80.0F, 80.0F);
 238                         }
 239
 240                         try {
 241                                 bmp.Save (sOutFile, ImageFormat.Gif);
 242
 243                                 // Load
 244                                 using (Bitmap bmpLoad = new Bitmap (sOutFile)) {
 245                                         Assert.AreEqual (expected, bmpLoad.PixelFormat, "PixelFormat");
 246                                         Color color = bmpLoad.GetPixel (10, 10);
 247                                         if (exactColorCheck) {
 248                                                 Assert.AreEqual (Color.FromArgb (255, 255, 0, 0), color, "Red");
 249                                         } else {
 250 // FIXME: we don't save a pure red (F8 instead of FF) into the file so the color-check assert will fail
 251 // this is due to libgif's QuantizeBuffer. An alternative would be to make our own that checks if less than 256 colors
 252 // are used in the bitmap (or else use QuantizeBuffer).
 253                                                 Assert.AreEqual (255, color.A, "A");
 254                                                 Assert.IsTrue (color.R >= 248, "R");
 255                                                 Assert.AreEqual (0, color.G, "G");
 256                                                 Assert.AreEqual (0, color.B, "B");
 257                                         }
 258                                 }
 259                         }
 260                         finally {
 261                                 gr.Dispose ();
 262                                 bmp.Dispose ();
 263                                 try {
 264                                         File.Delete (sOutFile);
 265                                 }
 266                                 catch {
 267                                 }
 268                         }
 269                 }
 270
 271                 [Test]
 272                 public void Save_24bppRgb ()
 273                 {
 274                         Save (PixelFormat.Format24bppRgb, PixelFormat.Format8bppIndexed, false);
 275                 }
 276
 277                 [Test]
 278                 public void Save_32bppRgb ()
 279                 {
 280                         Save (PixelFormat.Format32bppRgb, PixelFormat.Format8bppIndexed, false);
 281                 }
 282
 283                 [Test]
 284                 public void Save_32bppArgb ()
 285                 {
 286                         Save (PixelFormat.Format32bppArgb, PixelFormat.Format8bppIndexed, false);
 287                 }
 288
 289                 [Test]
 290                 public void Save_32bppPArgb ()
 291                 {
 292                         Save (PixelFormat.Format32bppPArgb, PixelFormat.Format8bppIndexed, false);
 293                 }
 294
 295                 [Test]
 296                 [Category ("NotWorking")] // libgdiplus/cairo can't create a bitmap with this format
 297                 public void Save_48bppRgb ()
 298                 {
 299                         Save (PixelFormat.Format48bppRgb, PixelFormat.Format8bppIndexed, false);
 300                 }
 301
 302                 [Test]
 303                 [Category ("NotWorking")] // libgdiplus/cairo can't create a bitmap with this format
 304                 public void Save_64bppArgb ()
 305                 {
 306                         Save (PixelFormat.Format64bppArgb, PixelFormat.Format8bppIndexed, false);
 307                 }
 308
 309                 [Test]
 310                 [Category ("NotWorking")] // libgdiplus/cairo can't create a bitmap with this format
 311                 public void Save_64bppPArgb ()
 312                 {
 313                         Save (PixelFormat.Format64bppPArgb, PixelFormat.Format8bppIndexed, false);
 314                 }
 315         }
 316 }