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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ANDROID_FRAMEWORKS_CAMERASERVICE_V2_0_CAMERASERVICE_H
     18 #define ANDROID_FRAMEWORKS_CAMERASERVICE_V2_0_CAMERASERVICE_H
     19 
     20 #include <mutex>
     21 #include <thread>
     22 
     23 #include <android/frameworks/cameraservice/common/2.0/types.h>
     24 #include <android/frameworks/cameraservice/service/2.0/ICameraService.h>
     25 #include <android/frameworks/cameraservice/service/2.0/types.h>
     26 #include <android/frameworks/cameraservice/device/2.0/types.h>
     27 
     28 #include <hidl/Status.h>
     29 
     30 #include <CameraService.h>
     31 
     32 namespace android {
     33 namespace frameworks {
     34 namespace cameraservice {
     35 namespace service {
     36 namespace V2_0 {
     37 namespace implementation {
     38 
     39 using hardware::hidl_string;
     40 using hardware::ICameraServiceListener;
     41 using hardware::Return;
     42 
     43 using HCameraDeviceCallback = frameworks::cameraservice::device::V2_0::ICameraDeviceCallback;
     44 using HCameraMetadata = frameworks::cameraservice::service::V2_0::CameraMetadata;
     45 using HCameraService = frameworks::cameraservice::service::V2_0::ICameraService;
     46 using HCameraServiceListener = frameworks::cameraservice::service::V2_0::ICameraServiceListener;
     47 using HStatus = frameworks::cameraservice::common::V2_0::Status;
     48 using HCameraStatusAndId = frameworks::cameraservice::service::V2_0::CameraStatusAndId;
     49 
     50 struct HidlCameraService final : public HCameraService {
     51 
     52     ~HidlCameraService() { };
     53 
     54     // Methods from ::android::frameworks::cameraservice::service::V2.0::ICameraService follow.
     55 
     56     Return<void> connectDevice(const sp<HCameraDeviceCallback>& callback,
     57                                const hidl_string& cameraId, connectDevice_cb _hidl_cb) override;
     58 
     59     Return<void> addListener(const sp<HCameraServiceListener>& listener,
     60                              addListener_cb _hidl_cb) override;
     61 
     62     Return<HStatus> removeListener(const sp<HCameraServiceListener>& listener) override;
     63 
     64     Return<void> getCameraCharacteristics(const hidl_string& cameraId,
     65                                           getCameraCharacteristics_cb _hidl_cb) override;
     66 
     67     Return<void> getCameraVendorTagSections(getCameraVendorTagSections_cb _hidl_cb) override;
     68 
     69     // This method should only be called by the cameraservers main thread to
     70     // instantiate the hidl cameraserver.
     71     static sp<HidlCameraService> getInstance(android::CameraService *cs);
     72 
     73 private:
     74     HidlCameraService(android::CameraService *cs) : mAidlICameraService(cs) { };
     75 
     76     sp<hardware::ICameraServiceListener> searchListenerCacheLocked(
     77         sp<HCameraServiceListener> listener, /*removeIfFound*/ bool shouldRemove = false);
     78 
     79     void addToListenerCacheLocked(sp<HCameraServiceListener> hListener,
     80                                   sp<hardware::ICameraServiceListener> csListener);
     81 
     82     android::CameraService *const mAidlICameraService = nullptr;
     83 
     84     Mutex mListenerListLock;
     85 
     86     using HIListeners =
     87         std::pair<sp<HCameraServiceListener>, sp<ICameraServiceListener>>;
     88     std::list<HIListeners> mListeners;
     89 };
     90 
     91 }  // namespace implementation
     92 }  // namespace V2_0
     93 }  // namespace service
     94 }  // namespace cameraservice
     95 }  // namespace frameworks
     96 }  // namespace android
     97 
     98 #endif  // ANDROID_FRAMEWORKS_CAMERASERVICE_V2_0_CAMERASERVICE_H
     99