gpu_tonemapper: Include gpu tonemapper

GPU tonemapper library which is used by HWC to tone
map the layers from one Gamut to another based on the
3D LUT.

Change-Id: Iccaa38e40989e832fd3891a24eca494aba696d9a
Crs-fixed: 1094964
diff --git a/gpu_tonemapper/engine.h b/gpu_tonemapper/engine.h
new file mode 100644
index 0000000..5635ee3
--- /dev/null
+++ b/gpu_tonemapper/engine.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Not a Contribution.
+ *
+ * Copyright 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __TONEMAPPER_ENGINE_H__
+#define __TONEMAPPER_ENGINE_H__
+
+bool engine_initialize();
+void engine_bind();
+void engine_shutdown();
+
+unsigned int engine_loadProgram(int, const char **, int, const char **);
+void engine_setProgram(int);
+void engine_deleteProgram(unsigned int);
+
+unsigned int engine_load3DTexture(void *data, int sz, int format);
+unsigned int engine_load1DTexture(void *xform, int xformSize, int format);
+void engine_deleteInputBuffer(unsigned int);
+
+void engine_set2DInputBuffer(int binding, unsigned int textureID);
+void engine_set3DInputBuffer(int binding, unsigned int textureID);
+void engine_setExternalInputBuffer(int binding, unsigned int textureID);
+void engine_setDestination(int id, int x, int y, int w, int h);
+
+int engine_blit(int);
+
+#endif  //__TONEMAPPER_ENGINE_H__
\ No newline at end of file