sde: Move utility functions to common header file
Move utility functions to common header file accesible from
SDE and HWC modules.
Change-Id: Id5183bb8f41a223273c973960f653f155e3c4c05
diff --git a/displayengine/include/utils/constants.h b/displayengine/include/utils/constants.h
index 04a5f77..6f98b07 100644
--- a/displayengine/include/utils/constants.h
+++ b/displayengine/include/utils/constants.h
@@ -53,6 +53,24 @@
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
+template <class T>
+inline void Swap(T &a, T &b) {
+ T c(a);
+ a = b;
+ b = c;
+}
+
+// factor value should be in powers of 2(eg: 1, 2, 4, 8)
+template <class T1, class T2>
+inline T1 FloorToMultipleOf(const T1 &value, const T2 &factor) {
+ return (T1)(value & (~(factor - 1)));
+}
+
+template <class T1, class T2>
+inline T1 CeilToMultipleOf(const T1 &value, const T2 &factor) {
+ return (T1)((value + (factor - 1)) & (~(factor - 1)));
+}
+
namespace sde {
const int kThreadPriorityUrgent = -9;