1 /*
2  * Copyright (C) 2019 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_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
18 #define ANDROID_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
19 
20 #include "HalCamera.h"
21 #include "VirtualCamera.h"
22 #include "emul/EvsEmulatedCamera.h"
23 #include "stats/StatsCollector.h"
24 
25 #include <list>
26 #include <unordered_map>
27 #include <unordered_set>
28 
29 #include <android/hardware/automotive/evs/1.1/IEvsEnumerator.h>
30 #include <android/hardware/automotive/evs/1.1/IEvsDisplay.h>
31 #include <android/hardware/camera/device/3.2/ICameraDevice.h>
32 #include <system/camera_metadata.h>
33 
34 using namespace ::android::hardware::automotive::evs::V1_1;
35 using ::android::hardware::Return;
36 using ::android::hardware::hidl_string;
37 using ::android::hardware::camera::device::V3_2::Stream;
38 
39 namespace android {
40 namespace automotive {
41 namespace evs {
42 namespace V1_1 {
43 namespace implementation {
44 
45 using IEvsCamera_1_0     = ::android::hardware::automotive::evs::V1_0::IEvsCamera;
46 using IEvsCamera_1_1     = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
47 using IEvsEnumerator_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsEnumerator;
48 using IEvsEnumerator_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsEnumerator;
49 using IEvsDisplay_1_0    = ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
50 using IEvsDisplay_1_1    = ::android::hardware::automotive::evs::V1_1::IEvsDisplay;
51 using EvsDisplayState    = ::android::hardware::automotive::evs::V1_0::DisplayState;
52 
53 class Enumerator : public IEvsEnumerator {
54 public:
55     // Methods from ::android::hardware::automotive::evs::V1_0::IEvsEnumerator follow.
56     Return<void>                getCameraList(getCameraList_cb _hidl_cb)  override;
57     Return<sp<IEvsCamera_1_0>>  openCamera(const hidl_string& cameraId)  override;
58     Return<void>                closeCamera(const ::android::sp<IEvsCamera_1_0>& virtualCamera)  override;
59     Return<sp<IEvsDisplay_1_0>> openDisplay()  override;
60     Return<void>                closeDisplay(const ::android::sp<IEvsDisplay_1_0>& display)  override;
61     Return<EvsDisplayState>     getDisplayState()  override;
62 
63     // Methods from ::android::hardware::automotive::evs::V1_1::IEvsEnumerator follow.
64     Return<void>                getCameraList_1_1(getCameraList_1_1_cb _hidl_cb) override;
65     Return<sp<IEvsCamera_1_1>>  openCamera_1_1(const hidl_string& cameraId,
66                                                const Stream& streamCfg) override;
isHardware()67     Return<bool>                isHardware() override { return false; }
68     Return<void>                getDisplayIdList(getDisplayIdList_cb _list_cb) override;
69     Return<sp<IEvsDisplay_1_1>> openDisplay_1_1(uint8_t id) override;
70     Return<void> getUltrasonicsArrayList(getUltrasonicsArrayList_cb _hidl_cb) override;
71     Return<sp<IEvsUltrasonicsArray>> openUltrasonicsArray(
72             const hidl_string& ultrasonicsArrayId) override;
73     Return<void> closeUltrasonicsArray(
74             const ::android::sp<IEvsUltrasonicsArray>& evsUltrasonicsArray) override;
75 
76     // Methods from ::android.hidl.base::V1_0::IBase follow.
77     Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& options) override;
78 
79     // Implementation details
80     bool init(const char* hardwareServiceName);
81 
82     // Destructor
83     virtual ~Enumerator();
84 
85 private:
86     bool inline                     checkPermission();
87     bool                            isLogicalCamera(const camera_metadata_t *metadata);
88     std::unordered_set<std::string> getPhysicalCameraIds(const std::string& id);
89 
90     sp<IEvsEnumerator_1_1>            mHwEnumerator;  // Hardware enumerator
91     wp<IEvsDisplay_1_0>               mActiveDisplay; // Display proxy object warpping hw display
92 
93     // List of active camera proxy objects that wrap hw cameras
94     std::unordered_map<std::string,
95                        sp<HalCamera>> mActiveCameras;
96 
97     // List of camera descriptors of enumerated hw cameras
98     std::unordered_map<std::string,
99                        CameraDesc>    mCameraDevices;
100 
101     // List of available physical display devices
102     std::list<uint8_t>                mDisplayPorts;
103 
104     // Display port the internal display is connected to.
105     uint8_t                           mInternalDisplayPort;
106 
107     // Collecting camera usage statistics from clients
108     sp<StatsCollector>                mClientsMonitor;
109 
110     // Boolean flag to tell whether the camera usages are being monitored or not
111     bool                              mMonitorEnabled;
112 
113     // Boolean flag to tell whether EvsDisplay is owned exclusively or not
114     bool                              mDisplayOwnedExclusively;
115 
116     // LSHAL dump
117     void cmdDump(int fd, const hidl_vec<hidl_string>& options);
118     void cmdHelp(int fd);
119     void cmdList(int fd, const hidl_vec<hidl_string>& options);
120     void cmdDumpDevice(int fd, const hidl_vec<hidl_string>& options);
121 
122     // List of emulated camera devices
123     std::unordered_map<std::string,
124                   EmulatedCameraDesc> mEmulatedCameraDevices;
125 
126     // LSHAL command to use emulated camera device
127     void cmdConfigureEmulatedCamera(int fd, const hidl_vec<hidl_string>& options);
128 };
129 
130 } // namespace implementation
131 } // namespace V1_1
132 } // namespace evs
133 } // namespace automotive
134 } // namespace android
135 
136 #endif  // ANDROID_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
137