Add camera metering mode API.
bug:2737111
Change-Id: Ie986fee56ebeaaed2d2efb757701dfe3ffdec8d8
diff --git a/include/camera/CameraParameters.h b/include/camera/CameraParameters.h
index 2b7a86e..4840b40 100644
--- a/include/camera/CameraParameters.h
+++ b/include/camera/CameraParameters.h
@@ -250,6 +250,10 @@
// Example value: "yuv420sp" or PIXEL_FORMAT_XXX constants. Read only.
static const char KEY_VIDEO_FRAME_FORMAT[];
+ // Metering mode. This affects how camera determines exposure.
+ // Example value: "spot" or METERING_MODE_XXX constants. Read/write.
+ static const char KEY_METERING_MODE[];
+
// Value for KEY_ZOOM_SUPPORTED or KEY_SMOOTH_ZOOM_SUPPORTED.
static const char TRUE[];
@@ -347,6 +351,15 @@
// callback will be only called once as soon as the picture is in focus.
static const char FOCUS_MODE_CONTINUOUS[];
+ // The camera determines the exposure by giving more weight to the
+ // central part of the scene.
+ static const char METERING_MODE_CENTER_WEIGHTED[];
+ // The camera determines the exposure by averaging the entire scene,
+ // giving no weighting to any particular area.
+ static const char METERING_MODE_FRAME_AVERAGE[];
+ // The camera determines the exposure by a very small area of the scene,
+ // typically the center.
+ static const char METERING_MODE_SPOT[];
private:
DefaultKeyedVector<String8,String8> mMap;