[Scummvm-cvs-logs] SF.net SVN: scummvm:[39711] scummvm/trunk/graphics/pixelformat.h
buddha_ at users.sourceforge.net
buddha_ at users.sourceforge.net
Fri Mar 27 21:56:15 CET 2009
Revision: 39711
http://scummvm.svn.sourceforge.net/scummvm/?rev=39711&view=rev
Author: buddha_
Date: 2009-03-27 20:56:15 +0000 (Fri, 27 Mar 2009)
Log Message:
-----------
Add color component bit count (rBits, gBits, bBits, aBits) and maximum value (rMax, gMax, bMax, aMax) convenience functions to PixelFormat-struct (If someone objects to adding these, holler and/or revert this commit, I can live without 'em but they'd ease some parts of Cine::Palette-code).
Modified Paths:
--------------
scummvm/trunk/graphics/pixelformat.h
Modified: scummvm/trunk/graphics/pixelformat.h
===================================================================
--- scummvm/trunk/graphics/pixelformat.h 2009-03-27 20:03:38 UTC (rev 39710)
+++ scummvm/trunk/graphics/pixelformat.h 2009-03-27 20:56:15 UTC (rev 39711)
@@ -86,6 +86,46 @@
g = ((color >> gShift) << gLoss) & 0xFF;
b = ((color >> bShift) << bLoss) & 0xFF;
}
+
+ //////////////////////////////////////////////////////////////////////
+ // Convenience functions for getting number of color component bits //
+ //////////////////////////////////////////////////////////////////////
+
+ inline byte rBits() const {
+ return (8 - rLoss);
+ }
+
+ inline byte gBits() const {
+ return (8 - gLoss);
+ }
+
+ inline byte bBits() const {
+ return (8 - bLoss);
+ }
+
+ inline byte aBits() const {
+ return (8 - aLoss);
+ }
+
+ ////////////////////////////////////////////////////////////////////////
+ // Convenience functions for getting color components' maximum values //
+ ////////////////////////////////////////////////////////////////////////
+
+ inline uint rMax() const {
+ return (1 << rBits()) - 1;
+ }
+
+ inline uint gMax() const {
+ return (1 << gBits()) - 1;
+ }
+
+ inline uint bMax() const {
+ return (1 << bBits()) - 1;
+ }
+
+ inline uint aMax() const {
+ return (1 << aBits()) - 1;
+ }
};
} // end of namespace Graphics
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