1 files changed, 63 insertions, 0 deletions
diff --git a/libs/canvas/benchmark/benchmark.cc b/libs/canvas/benchmark/benchmark.cc
new file mode 100644
index 0000000000..275edafc71
--- /dev/null
+++ b/libs/canvas/benchmark/benchmark.cc
@@ -0,0 +1,63 @@
+#include <sys/time.h>
+#include "pbd/compose.h"
+#include "canvas/types.h"
+#include "canvas/canvas.h"
+#include "benchmark.h"
+
+using namespace std;
+using namespace ArdourCanvas;
+
+double
+double_random ()
+{
+	return ((double) rand() / RAND_MAX);
+}
+
+ArdourCanvas::Rect
+rect_random (double rough_size)
+{
+	double const x = double_random () * rough_size / 2;
+	double const y = double_random () * rough_size / 2;
+	double const w = double_random () * rough_size / 2;
+	double const h = double_random () * rough_size / 2;
+	return Rect (x, y, x + w, y + h);
+}
+
+Benchmark::Benchmark (string const & session)
+	: _iterations (1)
+{
+	string path = string_compose ("../../libs/canvas/benchmark/sessions/%1.xml", session);
+	_canvas = new ImageCanvas (new XMLTree (path), Duple (4096, 4096));
+}
+
+void
+Benchmark::set_iterations (int n)
+{
+	_iterations = n;
+}
+
+/** @return wallclock time in seconds */
+double
+Benchmark::run ()
+{
+	timeval start;
+	gettimeofday (&start, 0);
+
+	for (int i = 0; i < _iterations; ++i) {
+		do_run (*_canvas);
+	}
+
+	timeval stop;
+	gettimeofday (&stop, 0);
+
+	finish (*_canvas);
+
+	int sec = stop.tv_sec - start.tv_sec;
+	int usec = stop.tv_usec - start.tv_usec;
+	if (usec < 0) {
+		--sec;
+		usec += 1e6;
+	}
+
+	return sec + ((double) usec / 1e6);
+}