color blindness enhancement
This is an attempt at improving the experience of
users with color vision impairement.
At this time this feature can only be enabled for
debugging:
adb shell service call SurfaceFlinger 1014 i32 PARAM
with PARAM:
0 : disabled
1 : protanomaly/protanopia simulation
2 : deuteranomaly/deuteranopia simulation
3 : tritanopia/tritanomaly simulation
11, 12, 13: same as above w/ attempted correction/enhancement
The enhancement algorithm tries to spread the "error"
such that tones that would otherwise appear similar can be
distinguished.
Bug: 9465644
Change-Id: I860f7eed0cb81f54ef9cf24ad78155b6395ade48
diff --git a/services/surfaceflinger/Effects/Daltonizer.h b/services/surfaceflinger/Effects/Daltonizer.h
new file mode 100644
index 0000000..e816437
--- /dev/null
+++ b/services/surfaceflinger/Effects/Daltonizer.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2013 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 SF_EFFECTS_DALTONIZER_H_
+#define SF_EFFECTS_DALTONIZER_H_
+
+#include <ui/mat4.h>
+
+namespace android {
+
+class Daltonizer {
+public:
+ enum ColorBlindnessTypes {
+ protanopia, // L (red) cone missing
+ deuteranopia, // M (green) cone missing
+ tritanopia, // S (blue) cone missing
+ protanomaly, // L (red) cone deficient
+ deuteranomaly, // M (green) cone deficient (most common)
+ tritanomaly // S (blue) cone deficient
+ };
+
+ enum Mode {
+ simulation,
+ correction
+ };
+
+ Daltonizer();
+ ~Daltonizer();
+
+ void setType(ColorBlindnessTypes type);
+ void setMode(Mode mode);
+
+ // returns the color transform to apply in the shader
+ const mat4& operator()();
+
+private:
+ void update();
+
+ ColorBlindnessTypes mType;
+ Mode mMode;
+ bool mDirty;
+ mat4 mColorTransform;
+};
+
+} /* namespace android */
+#endif /* SF_EFFECTS_DALTONIZER_H_ */