Merge "camera2 ndk: Don't send onStatusChanged callbacks for devices which... (b3fc5d6b) · Commits · e / os / android_frameworks_av

camera/ndk/impl/ACameraManager.cpp

+43 −20

Original line number	Diff line number	Diff line
		@@ -76,6 +76,10 @@ static bool isCameraServiceDisabled() {

		sp<hardware::ICameraService> CameraManagerGlobal::getCameraService() {
		Mutex::Autolock _l(mLock);
		return getCameraServiceLocked();
		}

		sp<hardware::ICameraService> CameraManagerGlobal::getCameraServiceLocked() {
		if (mCameraService.get() == nullptr) {
		if (isCameraServiceDisabled()) {
		return mCameraService;
		@@ -216,8 +220,12 @@ void CameraManagerGlobal::registerAvailabilityCallback(
		if (pair.second) {
		for (auto& pair : mDeviceStatusMap) {
		const String8& cameraId = pair.first;
		int32_t status = pair.second;

		int32_t status = pair.second.status;
		// Don't send initial callbacks for camera ids which don't support
		// camera2
		if (!pair.second.supportsHAL3) {
		continue;
		}
		sp<AMessage> msg = new AMessage(kWhatSendSingleCallback, mHandler);
		ACameraManager_AvailabilityCallback cb = isStatusAvailable(status) ?
		callback->onCameraAvailable : callback->onCameraUnavailable;
		@@ -236,20 +244,32 @@ void CameraManagerGlobal::unregisterAvailabilityCallback(
		mCallbacks.erase(cb);
		}

		bool CameraManagerGlobal::supportsCamera2ApiLocked(const String8 &cameraId) {
		bool camera2Support = false;
		auto cs = getCameraServiceLocked();
		binder::Status serviceRet =
		cs->supportsCameraApi(String16(cameraId),
		hardware::ICameraService::API_VERSION_2, &camera2Support);
		if (!serviceRet.isOk()) {
		ALOGE("%s: supportsCameraApi2Locked() call failed for cameraId %s",
		__FUNCTION__, cameraId.c_str());
		return false;
		}
		return camera2Support;
		}

		void CameraManagerGlobal::getCameraIdList(std::vector<String8>* cameraIds) {
		// Ensure that we have initialized/refreshed the list of available devices
		auto cs = getCameraService();
		Mutex::Autolock _l(mLock);

		// Needed to make sure we're connected to cameraservice
		getCameraServiceLocked();
		for(auto& deviceStatus : mDeviceStatusMap) {
		if (deviceStatus.second == hardware::ICameraServiceListener::STATUS_NOT_PRESENT \|\|
		deviceStatus.second == hardware::ICameraServiceListener::STATUS_ENUMERATING) {
		if (deviceStatus.second.status == hardware::ICameraServiceListener::STATUS_NOT_PRESENT \|\|
		deviceStatus.second.status ==
		hardware::ICameraServiceListener::STATUS_ENUMERATING) {
		continue;
		}
		bool camera2Support = false;
		binder::Status serviceRet = cs->supportsCameraApi(String16(deviceStatus.first),
		hardware::ICameraService::API_VERSION_2, &camera2Support);
		if (!serviceRet.isOk() \|\| !camera2Support) {
		if (!deviceStatus.second.supportsHAL3) {
		continue;
		}
		cameraIds->push_back(deviceStatus.first);
		@@ -377,7 +397,7 @@ void CameraManagerGlobal::onStatusChangedLocked(
		bool firstStatus = (mDeviceStatusMap.count(cameraId) == 0);
		int32_t oldStatus = firstStatus ?
		status : // first status
		mDeviceStatusMap[cameraId];
		mDeviceStatusMap[cameraId].status;

		if (!firstStatus &&
		isStatusAvailable(status) == isStatusAvailable(oldStatus)) {
		@@ -385,8 +405,10 @@ void CameraManagerGlobal::onStatusChangedLocked(
		return;
		}

		bool supportsHAL3 = supportsCamera2ApiLocked(cameraId);
		// Iterate through all registered callbacks
		mDeviceStatusMap[cameraId] = status;
		mDeviceStatusMap[cameraId] = StatusAndHAL3Support(status, supportsHAL3);
		if (supportsHAL3) {
		for (auto cb : mCallbacks) {
		sp<AMessage> msg = new AMessage(kWhatSendSingleCallback, mHandler);
		ACameraManager_AvailabilityCallback cbFp = isStatusAvailable(status) ?
		@@ -396,6 +418,7 @@ void CameraManagerGlobal::onStatusChangedLocked(
		msg->setString(kCameraIdKey, AString(cameraId));
		msg->post();
		}
		}
		if (status == hardware::ICameraServiceListener::STATUS_NOT_PRESENT) {
		mDeviceStatusMap.erase(cameraId);
		}

camera/ndk/impl/ACameraManager.h

+14 −4

Original line number	Diff line number	Diff line
		@@ -156,12 +156,14 @@ class CameraManagerGlobal final : public RefBase {
		sp<CallbackHandler> mHandler;
		sp<ALooper> mCbLooper; // Looper thread where callbacks actually happen on

		sp<hardware::ICameraService> getCameraServiceLocked();
		void onCameraAccessPrioritiesChanged();
		void onStatusChanged(int32_t status, const String8& cameraId);
		void onStatusChangedLocked(int32_t status, const String8& cameraId);
		// Utils for status
		static bool validStatus(int32_t status);
		static bool isStatusAvailable(int32_t status);
		bool supportsCamera2ApiLocked(const String8 &cameraId);

		// The sort logic must match the logic in
		// libcameraservice/common/CameraProviderManager.cpp::getAPI1CompatibleCameraDeviceIds
		@@ -184,8 +186,16 @@ class CameraManagerGlobal final : public RefBase {
		}
		};

		struct StatusAndHAL3Support {
		int32_t status = hardware::ICameraServiceListener::STATUS_NOT_PRESENT;
		bool supportsHAL3 = false;
		StatusAndHAL3Support(int32_t st, bool HAL3support):
		status(st), supportsHAL3(HAL3support) { };
		StatusAndHAL3Support() = default;
		};

		// Map camera_id -> status
		std::map<String8, int32_t, CameraIdComparator> mDeviceStatusMap;
		std::map<String8, StatusAndHAL3Support, CameraIdComparator> mDeviceStatusMap;

		// For the singleton instance
		static Mutex sLock;