Camera: Pass system health metrics to ServiceProxy
- Measure session statistics:
- Camera open, close, and session creation latency
- Session information such as camera id, is_ndk, operating mode,
and reconfiguration count.
- Measure stream statistics:
- width, height, format, dataspace, usage
- max buffer count
- buffer loss count
- startup latency.
Test: ./out/host/linux-x86/bin/statsd_testdrive 227
Test: Camera CTS, VNDK test
Bug: 154159000
Change-Id: I082ef26a312bddbfd4abcc2148728a4b7bf8a9f6
diff --git a/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h b/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h
new file mode 100644
index 0000000..9525935
--- /dev/null
+++ b/services/camera/libcameraservice/utils/CameraServiceProxyWrapper.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2020 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_SERVERS_CAMERA_SERVICE_PROXY_WRAPPER_H_
+#define ANDROID_SERVERS_CAMERA_SERVICE_PROXY_WRAPPER_H_
+
+#include <android/hardware/ICameraServiceProxy.h>
+
+#include <utils/Mutex.h>
+#include <utils/String8.h>
+#include <utils/String16.h>
+#include <utils/StrongPointer.h>
+#include <utils/Timers.h>
+
+#include <camera/CameraSessionStats.h>
+
+namespace android {
+
+class CameraServiceProxyWrapper {
+private:
+ // Guard mCameraServiceProxy
+ static Mutex sProxyMutex;
+ // Cached interface to the camera service proxy in system service
+ static sp<hardware::ICameraServiceProxy> sCameraServiceProxy;
+
+ struct CameraSessionStatsWrapper {
+ hardware::CameraSessionStats mSessionStats;
+ Mutex mLock; // lock for per camera session stats
+
+ CameraSessionStatsWrapper(const String16& cameraId, int facing, int newCameraState,
+ const String16& clientName, int apiLevel, bool isNdk, int32_t latencyMs) :
+ mSessionStats(cameraId, facing, newCameraState, clientName, apiLevel, isNdk, latencyMs)
+ {}
+
+ void onOpen();
+ void onClose(int32_t latencyMs);
+ void onStreamConfigured(int operatingMode, bool internalReconfig, int32_t latencyMs);
+ void onActive();
+ void onIdle(int64_t requestCount, int64_t resultErrorCount, bool deviceError,
+ const std::vector<hardware::CameraStreamStats>& streamStats);
+ };
+
+ // Lock for camera session stats map
+ static Mutex mLock;
+ // Map from camera id to the camera's session statistics
+ static std::map<String8, std::shared_ptr<CameraSessionStatsWrapper>> mSessionStatsMap;
+
+ /**
+ * Update the session stats of a given camera device (open/close/active/idle) with
+ * the camera proxy service in the system service
+ */
+ static void updateProxyDeviceState(
+ const hardware::CameraSessionStats& sessionStats);
+
+ static sp<hardware::ICameraServiceProxy> getCameraServiceProxy();
+
+public:
+ // Open
+ static void logOpen(const String8& id, int facing,
+ const String16& clientPackageName, int apiLevel, bool isNdk,
+ int32_t latencyMs);
+
+ // Close
+ static void logClose(const String8& id, int32_t latencyMs);
+
+ // Stream configuration
+ static void logStreamConfigured(const String8& id, int operatingMode, bool internalReconfig,
+ int32_t latencyMs);
+
+ // Session state becomes active
+ static void logActive(const String8& id);
+
+ // Session state becomes idle
+ static void logIdle(const String8& id,
+ int64_t requestCount, int64_t resultErrorCount, bool deviceError,
+ const std::vector<hardware::CameraStreamStats>& streamStats);
+
+ // Ping camera service proxy for user update
+ static void pingCameraServiceProxy();
+};
+
+} // android
+
+#endif // ANDROID_SERVERS_CAMERA_SERVICE_PROXY_WRAPPER_H_