First commit - moving from LuaForge to SourceForge

1 files changed, 87 insertions, 0 deletions

diff --git a/src/im_colormode.cpp b/src/im_colormode.cpp
new file mode 100644
index 0000000..2a99183
--- /dev/null
+++ b/src/im_colormode.cpp
@@ -0,0 +1,87 @@
+/** \file
+ * \brief Color Mode Utilities
+ *
+ * See Copyright Notice in im_lib.h
+ * $Id: im_colormode.cpp,v 1.1 2008/10/17 06:10:16 scuri Exp $
+ */
+
+
+#include <stdlib.h>
+#include <memory.h>
+#include <string.h>
+
+#include "im.h"
+#include "im_util.h"
+
+const char* imColorModeSpaceName(int color_mode)
+{
+  int color_space = imColorModeSpace(color_mode);
+  switch (color_space)
+  {
+  case IM_RGB:    return "RGB";
+  case IM_MAP:    return "Map";
+  case IM_GRAY:   return "Gray";
+  case IM_BINARY: return "Binary";
+  case IM_CMYK:   return "CMYK";
+  case IM_YCBCR:  return "Y'CbCr";
+  case IM_LAB:    return "CIE L*a*b*";
+  case IM_LUV:    return "CIE L*u*v*";
+  case IM_XYZ:    return "CIE XYZ";
+  }
+
+  return NULL;
+}
+
+int imColorModeDepth(int color_mode)
+{
+  int depth = 0;
+
+  int color_space = imColorModeSpace(color_mode);
+  switch (color_space)
+  {
+  case IM_GRAY:
+  case IM_BINARY:
+  case IM_MAP:   
+    depth = 1; 
+    break;
+  case IM_CMYK:
+    depth = 4; 
+    break;
+  default:
+    depth = 3; 
+    break;
+  }
+
+  if (imColorModeHasAlpha(color_mode))
+    depth++;
+
+  return depth;
+}
+
+int imColorModeToBitmap(int color_mode)
+{
+  int color_space = imColorModeSpace(color_mode);
+  switch (color_space)
+  {
+  case IM_BINARY:
+  case IM_GRAY:
+  case IM_MAP:
+    return color_space;
+  default:
+    return IM_RGB;
+  }
+}
+
+int imColorModeIsBitmap(int color_mode, int data_type)
+{
+  if (imColorModeSpace(color_mode) == IM_BINARY || 
+      imColorModeSpace(color_mode) == IM_MAP)
+    return 1;
+
+  if ((imColorModeSpace(color_mode) == IM_RGB || 
+       imColorModeSpace(color_mode) == IM_GRAY) &&
+      (data_type == IM_BYTE))
+    return 1;
+
+  return 0;
+}