1 /*
2  * Copyright (C) 2016 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_HARDWARE_CAMERA_PROVIDER_V2_4_CAMERAPROVIDER_H
18 #define ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_CAMERAPROVIDER_H
19 
20 #include <regex>
21 #include "hardware/camera_common.h"
22 #include "utils/Mutex.h"
23 #include "utils/SortedVector.h"
24 #include <android/hardware/camera/provider/2.4/ICameraProvider.h>
25 #include <hidl/Status.h>
26 #include <hidl/MQDescriptor.h>
27 #include "CameraModule.h"
28 #include "VendorTagDescriptor.h"
29 
30 namespace android {
31 namespace hardware {
32 namespace camera {
33 namespace provider {
34 namespace V2_4 {
35 namespace implementation {
36 
37 using ::android::hardware::camera::common::V1_0::CameraDeviceStatus;
38 using ::android::hardware::camera::common::V1_0::Status;
39 using ::android::hardware::camera::common::V1_0::TorchModeStatus;
40 using ::android::hardware::camera::common::V1_0::VendorTag;
41 using ::android::hardware::camera::common::V1_0::VendorTagSection;
42 using ::android::hardware::camera::common::V1_0::helper::CameraModule;
43 using ::android::hardware::camera::common::V1_0::helper::VendorTagDescriptor;
44 using ::android::hardware::camera::provider::V2_4::ICameraProvider;
45 using ::android::hardware::camera::provider::V2_4::ICameraProviderCallback;
46 using ::android::hardware::Return;
47 using ::android::hardware::Void;
48 using ::android::hardware::hidl_vec;
49 using ::android::hardware::hidl_string;
50 using ::android::sp;
51 using ::android::Mutex;
52 
53 struct CameraProvider : public ICameraProvider, public camera_module_callbacks_t {
54     CameraProvider();
55     ~CameraProvider();
56 
57     // Caller must use this method to check if CameraProvider ctor failed
isInitFailedCameraProvider58     bool isInitFailed() { return mInitFailed; }
59 
60     // Methods from ::android::hardware::camera::provider::V2_4::ICameraProvider follow.
61     Return<Status> setCallback(const sp<ICameraProviderCallback>& callback) override;
62     Return<void> getVendorTags(getVendorTags_cb _hidl_cb) override;
63     Return<void> getCameraIdList(getCameraIdList_cb _hidl_cb) override;
64     Return<void> isSetTorchModeSupported(isSetTorchModeSupported_cb _hidl_cb) override;
65     Return<void> getCameraDeviceInterface_V1_x(
66             const hidl_string& cameraDeviceName,
67             getCameraDeviceInterface_V1_x_cb _hidl_cb) override;
68     Return<void> getCameraDeviceInterface_V3_x(
69             const hidl_string& cameraDeviceName,
70             getCameraDeviceInterface_V3_x_cb _hidl_cb) override;
71 
72 private:
73     Mutex mCbLock;
74     sp<ICameraProviderCallback> mCallbacks = nullptr;
75 
76     sp<CameraModule> mModule;
77 
78     int mNumberOfLegacyCameras;
79     std::map<std::string, camera_device_status_t> mCameraStatusMap; // camera id -> status
80     std::map<std::string, bool> mOpenLegacySupported; // camera id -> open_legacy HAL1.0 supported
81     SortedVector<std::string> mCameraIds; // the "0"/"1" legacy camera Ids
82     // (cameraId string, hidl device name) pairs
83     SortedVector<std::pair<std::string, std::string>> mCameraDeviceNames;
84 
85     // Must be queried before using any APIs.
86     // APIs will only work when this returns true
87     bool mInitFailed;
88     bool initialize();
89 
90     hidl_vec<VendorTagSection> mVendorTagSections;
91     bool setUpVendorTags();
92     int checkCameraVersion(int id, camera_info info);
93 
94     // extract legacy camera ID/device version from a HIDL device name
95     static std::string getLegacyCameraId(const hidl_string& deviceName);
96     static int getCameraDeviceVersion(const hidl_string& deviceName);
97 
98     // create HIDL device name from camera ID and device version
99     static std::string getHidlDeviceName(std::string cameraId, int deviceVersion);
100 
101     // convert conventional HAL status to HIDL Status
102     static Status getHidlStatus(int);
103 
104     // static callback forwarding methods
105     static void sCameraDeviceStatusChange(
106         const struct camera_module_callbacks* callbacks,
107         int camera_id,
108         int new_status);
109     static void sTorchModeStatusChange(
110         const struct camera_module_callbacks* callbacks,
111         const char* camera_id,
112         int new_status);
113 };
114 
115 extern "C" ICameraProvider* HIDL_FETCH_ICameraProvider(const char* name);
116 
117 }  // namespace implementation
118 }  // namespace V2_4
119 }  // namespace provider
120 }  // namespace camera
121 }  // namespace hardware
122 }  // namespace android
123 
124 #endif  // ANDROID_HARDWARE_CAMERA_PROVIDER_V2_4_CAMERAPROVIDER_H
125