camera: implement flashlight control

Implement flashlight API for module v2.4 by calling module APIs and
by for hal v2 and v3 by using CameraDeviceBase.

Bug: 2682206
Change-Id: Ib8b77f6fd462489d672f27e14fe37801d35b7544

2 files changed, 31 insertions, 0 deletions

diff --git a/include/camera/ICameraService.h b/include/camera/ICameraService.h
index f7f06bb..cc41efe 100644
--- a/include/camera/ICameraService.h
+++ b/include/camera/ICameraService.h
@@ -53,6 +53,7 @@ public:
         GET_LEGACY_PARAMETERS,
         SUPPORTS_CAMERA_API,
         CONNECT_LEGACY,
+        SET_TORCH_MODE,
     };
 
     enum {
@@ -142,6 +143,12 @@ public:
             int clientUid,
             /*out*/
             sp<ICamera>& device) = 0;
+
+    /**
+     * Turn on or off a camera's torch mode.
+     */
+    virtual status_t setTorchMode(const String16& cameraId, bool enabled,
+            const sp<IBinder>& clientBinder) = 0;
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/camera/ICameraServiceListener.h b/include/camera/ICameraServiceListener.h
index 0a0e43a..9e8b912 100644
--- a/include/camera/ICameraServiceListener.h
+++ b/include/camera/ICameraServiceListener.h
@@ -66,9 +66,33 @@ public:
         STATUS_UNKNOWN          = 0xFFFFFFFF,
     };
 
+    /**
+     * The torch mode status of a camera.
+     *
+     * Initial status will be transmitted with onTorchStatusChanged immediately
+     * after this listener is added to the service listener list.
+     */
+    enum TorchStatus {
+        // The camera's torch mode has become available to use via
+        // setTorchMode().
+        TORCH_STATUS_AVAILABLE      = TORCH_MODE_STATUS_AVAILABLE,
+        // The camera's torch mode has become not available to use via
+        // setTorchMode().
+        TORCH_STATUS_NOT_AVAILABLE  = TORCH_MODE_STATUS_RESOURCE_BUSY,
+        // The camera's torch mode has been turned off by setTorchMode().
+        TORCH_STATUS_OFF            = TORCH_MODE_STATUS_OFF,
+        // The camera's torch mode has been turned on by setTorchMode().
+        TORCH_STATUS_ON             = 0x80000000,
+
+        // Use to initialize variables only
+        TORCH_STATUS_UNKNOWN        = 0xFFFFFFFF,
+    };
+
     DECLARE_META_INTERFACE(CameraServiceListener);
 
     virtual void onStatusChanged(Status status, int32_t cameraId) = 0;
+
+    virtual void onTorchStatusChanged(TorchStatus status, const String16& cameraId) = 0;
 };
 
 // ----------------------------------------------------------------------------