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

3 files changed, 55 insertions, 2 deletions

diff --git a/camera/ICameraService.cpp b/camera/ICameraService.cpp
index fc3e437..a75cb48 100644
--- a/camera/ICameraService.cpp
+++ b/camera/ICameraService.cpp
@@ -209,6 +209,20 @@ public:
         return status;
     }
 
+    virtual status_t setTorchMode(const String16& cameraId, bool enabled,
+            const sp<IBinder>& clientBinder)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ICameraService::getInterfaceDescriptor());
+        data.writeString16(cameraId);
+        data.writeInt32(enabled ? 1 : 0);
+        data.writeStrongBinder(clientBinder);
+        remote()->transact(BnCameraService::SET_TORCH_MODE, data, &reply);
+
+        if (readExceptionCode(reply)) return -EPROTO;
+        return reply.readInt32();
+    }
+
     // connect to camera service (pro client)
     virtual status_t connectPro(const sp<IProCameraCallbacks>& cameraCb, int cameraId,
                                 const String16 &clientPackageName, int clientUid,
@@ -490,6 +504,16 @@ status_t BnCameraService::onTransact(
             }
             return NO_ERROR;
         } break;
+        case SET_TORCH_MODE: {
+            CHECK_INTERFACE(ICameraService, data, reply);
+            String16 cameraId = data.readString16();
+            bool enabled = data.readInt32() != 0 ? true : false;
+            const sp<IBinder> clientBinder = data.readStrongBinder();
+            status_t status = setTorchMode(cameraId, enabled, clientBinder);
+            reply->writeNoException();
+            reply->writeInt32(status);
+            return NO_ERROR;
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/camera/ICameraServiceListener.cpp b/camera/ICameraServiceListener.cpp
index b2f1729..90a8bc2 100644
--- a/camera/ICameraServiceListener.cpp
+++ b/camera/ICameraServiceListener.cpp
@@ -29,6 +29,7 @@ namespace android {
 namespace {
     enum {
         STATUS_CHANGED = IBinder::FIRST_CALL_TRANSACTION,
+        TORCH_STATUS_CHANGED,
     };
 }; // namespace anonymous
 
@@ -54,8 +55,21 @@ public:
                            data,
                            &reply,
                            IBinder::FLAG_ONEWAY);
+    }
 
-        reply.readExceptionCode();
+    virtual void onTorchStatusChanged(TorchStatus status, const String16 &cameraId)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(
+                              ICameraServiceListener::getInterfaceDescriptor());
+
+        data.writeInt32(static_cast<int32_t>(status));
+        data.writeString16(cameraId);
+
+        remote()->transact(TORCH_STATUS_CHANGED,
+                           data,
+                           &reply,
+                           IBinder::FLAG_ONEWAY);
     }
 };
 
@@ -75,7 +89,16 @@ status_t BnCameraServiceListener::onTransact(
             int32_t cameraId = data.readInt32();
 
             onStatusChanged(status, cameraId);
-            reply->writeNoException();
+
+            return NO_ERROR;
+        } break;
+        case TORCH_STATUS_CHANGED: {
+            CHECK_INTERFACE(ICameraServiceListener, data, reply);
+
+            TorchStatus status = static_cast<TorchStatus>(data.readInt32());
+            String16 cameraId = data.readString16();
+
+            onTorchStatusChanged(status, cameraId);
 
             return NO_ERROR;
         } break;
diff --git a/camera/tests/ProCameraTests.cpp b/camera/tests/ProCameraTests.cpp
index 1f5867a..6212678 100644
--- a/camera/tests/ProCameraTests.cpp
+++ b/camera/tests/ProCameraTests.cpp
@@ -89,6 +89,12 @@ struct ServiceListener : public BnCameraServiceListener {
         mCondition.broadcast();
     }
 
+    void onTorchStatusChanged(TorchStatus status, const String16& cameraId) {
+        dout << "On torch status changed: 0x" << std::hex
+             << (unsigned int) status << " cameraId " << cameraId.string()
+             << std::endl;
+    }
+
     status_t waitForStatusChange(Status& newStatus) {
         Mutex::Autolock al(mMutex);