1 files changed, 140 insertions, 0 deletions
diff --git a/seduservice.c b/seduservice.c
new file mode 100644
index 0000000..1f241da
--- /dev/null
+++ b/seduservice.c
@@ -0,0 +1,140 @@
+/*
+ * seduservice.c: A plugin for the Video Disk Recorder
+ *
+ * See the README file for copyright information and how to reach the author.
+ *
+ * $Id: seduservice.c,v 1.3 2012/11/22 18:02:59 wendel Exp $
+ */
+
+#include <math.h>
+
+#include "seduservice.h"
+#include "common.h"
+
+//***************************************************************************
+// View Modes
+//***************************************************************************
+
+const char* cSeduService::viewModes[] =
+{
+   "atmo",
+   "fixed color",
+   "rainbow",
+   "moving color wheel",
+   "static color wheel",
+   "black",
+   "detached",
+
+   0
+};
+
+const char* cSeduService::toName(ViewMode vm)
+{
+   return viewModes[vm];
+}
+
+//***************************************************************************
+// Color conversion functions
+//***************************************************************************
+
+void cSeduService::rgb2hsv(int r, int g, int b, double* h, double* s, double* v)
+{
+   double minC, maxC, delta, rc, gc, bc;
+   rc = (double)r / 255.0;
+   gc = (double)g / 255.0;
+   bc = (double)b / 255.0;
+   maxC = max(rc, max(gc, bc));
+   minC = min(rc, min(gc, bc));
+   delta = maxC - minC;
+   *v = maxC;
+
+   if (maxC != 0)
+      *s = delta / maxC;
+   else
+      *s = 0;
+
+   if (*s == 0) 
+   {
+      *h = 0; 
+   }
+   else 
+   {
+      if (rc == maxC)
+         *h = (gc - bc) / delta;
+      else if (gc == maxC)
+         *h = 2 + (bc - rc) / delta;
+      else if (bc == maxC)
+         *h = 4 + (rc - gc) / delta;
+      
+      *h *= 60.0;
+
+      if (*h < 0)
+         *h += 360.0;
+   }
+}
+
+//***************************************************************************
+// 
+//***************************************************************************
+
+Pixel cSeduService::hsv2rgb(int h, double s, double v)
+{
+   Pixel p;
+
+   double rr = 0; 
+   double gg = 0; 
+   double bb = 0;
+   
+   int i = floor(h/60.0);
+   double f = h/60.0 - i;
+   double pv = v * (1 - s);
+   double qv = v * (1 - s * f);
+   double tv = v * (1 - s * (1-f));
+   
+   switch (i)
+   {
+      case 0:    // rojo dominante
+         rr = v;
+         gg = tv;
+         bb = pv;
+         break;
+
+      case 1:    // verde
+         rr = qv;
+         gg = v;
+         bb = pv;
+         break;
+
+      case 2: 
+         rr = pv;
+         gg = v;
+         bb = tv;
+         break;
+
+      case 3:    // azul
+         rr = pv;
+         gg = qv;
+         bb = v;
+         break;
+
+      case 4:
+         rr = tv;
+         gg = pv;
+         bb = v;
+         break;
+
+      case 5:    // rojo
+         rr = v;
+         gg = pv;
+         bb = qv;
+         break;
+   }
+
+   // set each component to a integer value between 0 and 255
+
+   p.r = minMax(255*rr, 0, 255);
+   p.g = minMax(255*gg, 0, 255);
+   p.b = minMax(255*bb, 0, 255);
+   
+   return p;
+}