From 45625f3116a09d3c8415a54bf8d19fdbb3a3aa9b Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Wed, 13 Mar 2013 16:46:50 +0000
Subject: Compute LUTs at run-time.

---
 src/lut_cache.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 src/lut_cache.h

(limited to 'src/lut_cache.h')

diff --git a/src/lut_cache.h b/src/lut_cache.h
new file mode 100644
index 00000000..b60ee109
--- /dev/null
+++ b/src/lut_cache.h
@@ -0,0 +1,28 @@
+#ifndef LIBDCP_LUT_CACHE_H
+#define LIBDCP_LUT_CACHE_H
+
+#include <list>
+#include <boost/shared_ptr.hpp>
+
+template<class T>
+class LUTCache
+{
+public:
+	boost::shared_ptr<T> get (int bit_depth, float gamma)
+	{
+		for (typename std::list<boost::shared_ptr<T> >::iterator i = _cache.begin(); i != _cache.end(); ++i) {
+			if ((*i)->bit_depth() == bit_depth && (*i)->gamma() == gamma) {
+				return *i;
+			}
+		}
+
+		boost::shared_ptr<T> lut (new T (bit_depth, gamma));
+		_cache.push_back (lut);
+		return lut;
+	}
+
+private:
+	std::list<boost::shared_ptr<T> > _cache;
+};
+
+#endif
-- 
cgit v1.2.3