commit ff723b6c43d5a8fd0ae0e0732f5d47012d74e01d
author Wu-cheng Li <wuchengli@google.com> Tue Feb 09 13:38:19 2010 +0800
committer Wu-cheng Li <wuchengli@google.com> Tue Feb 09 18:28:50 2010 +0800
tree ebb57244605ea16e2206ec479b8bc5f11d435beb
parent 7406e53c4c152267bff799b0bb5d7edb6ece404f

Add exposure compensation parameter.

bug:2375993

core/java/android/hardware/Camera.java

diff --git a/core/java/android/hardware/Camera.java b/core/java/android/hardware/Camera.java
index 47c2cac..7adbbcb 100644
--- a/core/java/android/hardware/Camera.java
+++ b/core/java/android/hardware/Camera.java
@@ -723,6 +723,7 @@
         private static final String KEY_FOCAL_LENGTH = "focal-length";
         private static final String KEY_HORIZONTAL_VIEW_ANGLE = "horizontal-view-angle";
         private static final String KEY_VERTICAL_VIEW_ANGLE = "vertical-view-angle";
+        private static final String KEY_EXPOSURE_COMPENSATION = "exposure-compensation";
         // Parameter key suffix for supported values.
         private static final String SUPPORTED_VALUES_SUFFIX = "-values";
 
@@ -1540,6 +1541,41 @@
         }
 
         /**
+         * Gets the current exposure compensation setting.
+         *
+         * @return the current exposure compensation value multiplied by 100.
+         *         null if exposure compensation is not supported. Ex: -100
+         *         means -1 EV. 130 means +1.3 EV.
+         * @hide
+         */
+        public int getExposureCompensation() {
+            return getInt(KEY_EXPOSURE_COMPENSATION);
+        }
+
+        /**
+         * Sets the exposure compensation.
+         *
+         * @param value exposure compensation multiplied by 100. Ex: -100 means
+         *        -1 EV. 130 means +1.3 EV.
+         * @hide
+         */
+        public void setExposureCompensation(int value) {
+            set(KEY_EXPOSURE_COMPENSATION, value);
+        }
+
+        /**
+         * Gets the supported exposure compensation.
+         *
+         * @return a List of Integer constants. null if exposure compensation is
+         *         not supported. The list is sorted from small to large. Ex:
+         *         -100, -66, -33, 0, 33, 66, 100.
+         * @hide
+         */
+        public List<Integer> getSupportedExposureCompensation() {
+            return splitInt(get(KEY_EXPOSURE_COMPENSATION + SUPPORTED_VALUES_SUFFIX));
+        }
+
+        /**
          * Gets current zoom value. This also works when smooth zoom is in
          * progress.
          *

include/ui/CameraParameters.h

diff --git a/include/ui/CameraParameters.h b/include/ui/CameraParameters.h
index 2c29bfb..e328f33 100644
--- a/include/ui/CameraParameters.h
+++ b/include/ui/CameraParameters.h
@@ -187,6 +187,13 @@
     // Vertical angle of view in degrees.
     // Example value: "42.5". Read only.
     static const char KEY_VERTICAL_VIEW_ANGLE[];
+    // Exposure compensation. The value is multiplied by 100. -100 means -1 EV.
+    // 130 means +1.3 EV.
+    // Example value: "0" or "133". Read/write.
+    static const char KEY_EXPOSURE_COMPENSATION[];
+    // Supported exposure compensation.
+    // Example value: "-100,-66,-33,0,33,66,100". Read only.
+    static const char KEY_SUPPORTED_EXPOSURE_COMPENSATION[];
 
 
         // Values for white balance settings.

libs/ui/CameraParameters.cpp

diff --git a/libs/ui/CameraParameters.cpp b/libs/ui/CameraParameters.cpp
index c4958a0..493b9c1 100644
--- a/libs/ui/CameraParameters.cpp
+++ b/libs/ui/CameraParameters.cpp
@@ -59,6 +59,8 @@
 const char CameraParameters::KEY_FOCAL_LENGTH[] = "focal-length";
 const char CameraParameters::KEY_HORIZONTAL_VIEW_ANGLE[] = "horizontal-view-angle";
 const char CameraParameters::KEY_VERTICAL_VIEW_ANGLE[] = "vertical-view-angle";
+const char CameraParameters::KEY_EXPOSURE_COMPENSATION[] = "exposure-compensation";
+const char CameraParameters::KEY_SUPPORTED_EXPOSURE_COMPENSATION[] = "exposure-compensation-values";
 
 // Values for white balance settings.
 const char CameraParameters::WHITE_BALANCE_AUTO[] = "auto";