CameraService: Clean up ICameraServiceProxy; send it more info

- Remove hand-written ICameraServiceProxy C++ impl; use the AIDL-
  generated version instead
- Send client package name and camera facing with the camera state
  notices

Test: Verify by logging that information sent to proxy is correct;
      no camera CTS regressions.
Bug: 32449509
Change-Id: I7a305b76b4f1d5c08b7938108bd73c95986508e0
diff --git a/camera/Android.bp b/camera/Android.bp
index 849f560..c76ae50 100644
--- a/camera/Android.bp
+++ b/camera/Android.bp
@@ -31,9 +31,11 @@
         // include libcamera_client, at the path "aidl/package/path/BnFoo.h"
         "aidl/android/hardware/ICameraService.aidl",
         "aidl/android/hardware/ICameraServiceListener.aidl",
+        "aidl/android/hardware/ICameraServiceProxy.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceCallbacks.aidl",
         "aidl/android/hardware/camera2/ICameraDeviceUser.aidl",
 
+
         // Source for camera interface parcelables, and manually-written interfaces
         "Camera.cpp",
         "CameraMetadata.cpp",
@@ -42,7 +44,6 @@
         "CameraParameters2.cpp",
         "ICamera.cpp",
         "ICameraClient.cpp",
-        "ICameraServiceProxy.cpp",
         "ICameraRecordingProxy.cpp",
         "ICameraRecordingProxyListener.cpp",
         "camera2/CaptureRequest.cpp",
diff --git a/camera/ICameraServiceProxy.cpp b/camera/ICameraServiceProxy.cpp
deleted file mode 100644
index a9d0836..0000000
--- a/camera/ICameraServiceProxy.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "BpCameraServiceProxy"
-
-#include <stdint.h>
-
-#include <binder/Parcel.h>
-
-#include <camera/ICameraServiceProxy.h>
-
-namespace android {
-
-class BpCameraServiceProxy: public BpInterface<ICameraServiceProxy> {
-public:
-    explicit BpCameraServiceProxy(const sp<IBinder>& impl)
-        : BpInterface<ICameraServiceProxy>(impl) {}
-
-    virtual void pingForUserUpdate() {
-        Parcel data;
-        data.writeInterfaceToken(ICameraServiceProxy::getInterfaceDescriptor());
-        remote()->transact(BnCameraServiceProxy::PING_FOR_USER_UPDATE, data, nullptr,
-                IBinder::FLAG_ONEWAY);
-    }
-
-    virtual void notifyCameraState(String16 cameraId, CameraState newCameraState) {
-        Parcel data;
-        data.writeInterfaceToken(ICameraServiceProxy::getInterfaceDescriptor());
-        data.writeString16(cameraId);
-        data.writeInt32(newCameraState);
-        remote()->transact(BnCameraServiceProxy::NOTIFY_CAMERA_STATE, data, nullptr,
-                IBinder::FLAG_ONEWAY);
-    }
-
-};
-
-
-IMPLEMENT_META_INTERFACE(CameraServiceProxy, "android.hardware.ICameraServiceProxy");
-
-status_t BnCameraServiceProxy::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
-        uint32_t flags) {
-    switch(code) {
-        case PING_FOR_USER_UPDATE: {
-            CHECK_INTERFACE(ICameraServiceProxy, data, reply);
-            pingForUserUpdate();
-            return NO_ERROR;
-        } break;
-        case NOTIFY_CAMERA_STATE: {
-            CHECK_INTERFACE(ICameraServiceProxy, data, reply);
-            String16 cameraId = data.readString16();
-            CameraState newCameraState =
-                static_cast<CameraState>(data.readInt32());
-            notifyCameraState(cameraId, newCameraState);
-            return NO_ERROR;
-        } break;
-        default:
-            return BBinder::onTransact(code, data, reply, flags);
-    }
-}
-}; // namespace android
diff --git a/camera/aidl/android/hardware/ICameraServiceProxy.aidl b/camera/aidl/android/hardware/ICameraServiceProxy.aidl
index 0e654d5..5dc23eb 100644
--- a/camera/aidl/android/hardware/ICameraServiceProxy.aidl
+++ b/camera/aidl/android/hardware/ICameraServiceProxy.aidl
@@ -31,7 +31,23 @@
     oneway void pingForUserUpdate();
 
     /**
-     * Update the status of a camera device
+     * Values for notifyCameraState newCameraState
      */
-     oneway void notifyCameraState(String cameraId, int newCameraState);
+    const int CAMERA_STATE_OPEN = 0;
+    const int CAMERA_STATE_ACTIVE = 1;
+    const int CAMERA_STATE_IDLE = 2;
+    const int CAMERA_STATE_CLOSED = 3;
+
+    /**
+     * Values for notifyCameraState facing
+     */
+    const int CAMERA_FACING_BACK = 0;
+    const int CAMERA_FACING_FRONT = 1;
+    const int CAMERA_FACING_EXTERNAL = 2;
+
+    /**
+     * Update the status of a camera device.
+     */
+    oneway void notifyCameraState(String cameraId, int facing, int newCameraState,
+            String clientName);
 }
diff --git a/camera/include/camera/ICameraServiceProxy.h b/camera/include/camera/ICameraServiceProxy.h
deleted file mode 100644
index 2613c01..0000000
--- a/camera/include/camera/ICameraServiceProxy.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * Copyright (C) 2015 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HARDWARE_ICAMERASERVICEPROXY_H
-#define ANDROID_HARDWARE_ICAMERASERVICEPROXY_H
-
-#include <utils/RefBase.h>
-#include <binder/IInterface.h>
-#include <binder/Parcel.h>
-
-namespace android {
-
-/**
- * Interface from native camera service to managed-side camera service proxy.
- *
- * Keep in sync with frameworks/base/core/java/android/hardware/ICameraServiceProxy.aidl
- *
- */
-class ICameraServiceProxy : public IInterface {
-public:
-    enum {
-        PING_FOR_USER_UPDATE = IBinder::FIRST_CALL_TRANSACTION,
-        NOTIFY_CAMERA_STATE
-    };
-
-    enum CameraState {
-        CAMERA_STATE_OPEN,
-        CAMERA_STATE_ACTIVE,
-        CAMERA_STATE_IDLE,
-        CAMERA_STATE_CLOSED
-    };
-
-    DECLARE_META_INTERFACE(CameraServiceProxy);
-
-    virtual void pingForUserUpdate() = 0;
-    virtual void notifyCameraState(String16 cameraId, CameraState newCameraState) = 0;
-};
-
-class BnCameraServiceProxy: public BnInterface<ICameraServiceProxy>
-{
-public:
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
-};
-
-
-
-}; // namespace android
-
-#endif // ANDROID_HARDWARE_ICAMERASERVICEPROXY_H