Unhide Camera lock and unlock API.

api/current.xml

@@ -67328,6 +67328,17 @@
  visibility="public"
 >
 </method>
+<method name="lock"
+ return="void"
+ abstract="false"
+ native="true"
+ synchronized="false"
+ static="false"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="open"
  return="android.hardware.Camera"
  abstract="false"
@@ -67488,6 +67499,17 @@
 <parameter name="jpeg" type="android.hardware.Camera.PictureCallback">
 </parameter>
 </method>
+<method name="unlock"
+ return="void"
+ abstract="false"
+ native="true"
+ synchronized="false"
+ static="false"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <field name="CAMERA_ERROR_SERVER_DIED"
  type="int"
  transient="false"

core/java/android/hardware/Camera.java

@@ -137,7 +137,6 @@ public class Camera {
      *
      * @throws IOException if the method fails.
      *
-     * FIXME: Unhide after approval
      * @hide
      */
     public native final void reconnect() throws IOException;
@@ -150,25 +149,20 @@ public class Camera {
      * Camera object is locked. Locking it again from the same process will
      * have no effect. Attempting to lock it from another process if it has
      * not been unlocked will fail.
-     * Returns 0 if lock was successful.
      *
-     * FIXME: Unhide after approval
+     * @throws RuntimeException if the method fails.
-     * @hide
      */
-    public native final int lock();
+    public native final void lock();
 
     /**
      * Unlock the camera to allow another process to access it. To save
      * setup/teardown time, a client of Camera can pass an initialized Camera
      * object to another process. This method is used to unlock the Camera
      * object before handing off the Camera object to the other process.
-
-     * Returns 0 if unlock was successful.
      *
-     * FIXME: Unhide after approval
+     * @throws RuntimeException if the method fails.
-     * @hide
      */
-    public native final int unlock();
+    public native final void unlock();
 
     /**
      * Sets the SurfaceHolder to be used for a picture preview. If the surface

core/jni/android_hardware_Camera.cpp

@@ -391,20 +391,26 @@ static void android_hardware_Camera_reconnect(JNIEnv *env, jobject thiz)
     }
 }
 
-static jint android_hardware_Camera_lock(JNIEnv *env, jobject thiz)
+static void android_hardware_Camera_lock(JNIEnv *env, jobject thiz)
 {
     LOGV("lock");
     sp<Camera> camera = get_native_camera(env, thiz, NULL);
-    if (camera == 0) return INVALID_OPERATION;
+    if (camera == 0) return;
-    return (jint) camera->lock();
+
+    if (camera->lock() != NO_ERROR) {
+        jniThrowException(env, "java/lang/RuntimeException", "lock failed");
+    }
 }
 
-static jint android_hardware_Camera_unlock(JNIEnv *env, jobject thiz)
+static void android_hardware_Camera_unlock(JNIEnv *env, jobject thiz)
 {
     LOGV("unlock");
     sp<Camera> camera = get_native_camera(env, thiz, NULL);
-    if (camera == 0) return INVALID_OPERATION;
+    if (camera == 0) return;
-    return (jint) camera->unlock();
+
+    if (camera->unlock() != NO_ERROR) {
+        jniThrowException(env, "java/lang/RuntimeException", "unlock failed");
+    }
 }
 
 //-------------------------------------------------
@@ -450,10 +456,10 @@ static JNINativeMethod camMethods[] = {
     "()V",
     (void*)android_hardware_Camera_reconnect },
   { "lock",
-    "()I",
+    "()V",
     (void*)android_hardware_Camera_lock },
   { "unlock",
-    "()I",
+    "()V",
     (void*)android_hardware_Camera_unlock },
 };