Add operator+=

[libdcp.git] / src / dcp_time.h

diff --git a/src/dcp_time.h b/src/dcp_time.h
index 1fae786c03e274fc35b12cd63208bc901562bfd7..9320d8bab2d7bf2b938a2043019471c18f98fe12 100644 (file)
--- a/src/dcp_time.h
+++ b/src/dcp_time.h
@@ -46,6 +46,19 @@
 
 namespace dcp {
 
+class Time;
+
+extern bool operator== (Time const & a, Time const & b);
+extern bool operator!= (Time const & a, Time const & b);
+extern bool operator<= (Time const & a, Time const & b);
+extern bool operator< (Time const & a, Time const & b);
+extern bool operator> (Time const & a, Time const & b);
+extern bool operator>= (Time const & a, Time const & b);
+extern std::ostream & operator<< (std::ostream & s, Time const & t);
+extern Time operator+ (Time a, Time b);
+extern Time operator- (Time a, Time b);
+extern float operator/ (Time a, Time const & b);
+
 /** @class Time
  *  @brief A representation of time within a DCP.
  */
@@ -92,21 +105,15 @@ public:
        int64_t as_editable_units (int tcr_) const;
        Time rebase (int tcr_) const;
 
+       Time& operator+= (Time const & o) {
+               *this = *this + o;
+               return *this;
+       }
+
 private:
        void set (double seconds, int tcr);
 };
 
-extern bool operator== (Time const & a, Time const & b);
-extern bool operator!= (Time const & a, Time const & b);
-extern bool operator<= (Time const & a, Time const & b);
-extern bool operator< (Time const & a, Time const & b);
-extern bool operator> (Time const & a, Time const & b);
-extern bool operator>= (Time const & a, Time const & b);
-extern std::ostream & operator<< (std::ostream & s, Time const & t);
-extern Time operator+ (Time a, Time b);
-extern Time operator- (Time a, Time b);
-extern float operator/ (Time a, Time const & b);
-
 }
 
 #endif