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 EMULATOR_CAMERA_HAL_HWL_CAMERA_PROVIDER_HWL_H
18 #define EMULATOR_CAMERA_HAL_HWL_CAMERA_PROVIDER_HWL_H
19
20 #include <camera_provider_hwl.h>
21 #include <hal_types.h>
22 #include <json/json.h>
23 #include <json/reader.h>
24 #include <future>
25
26 namespace android {
27
28 using google_camera_hal::CameraBufferAllocatorHwl;
29 using google_camera_hal::CameraDeviceHwl;
30 using google_camera_hal::CameraDeviceStatus;
31 using google_camera_hal::CameraIdAndStreamConfiguration;
32 using google_camera_hal::CameraProviderHwl;
33 using google_camera_hal::DeviceState;
34 using google_camera_hal::HalCameraMetadata;
35 using google_camera_hal::HwlCameraProviderCallback;
36 using google_camera_hal::HwlPhysicalCameraDeviceStatusChangeFunc;
37 using google_camera_hal::HwlTorchModeStatusChangeFunc;
38 using google_camera_hal::VendorTagSection;
39
40 class EmulatedCameraProviderHwlImpl : public CameraProviderHwl {
41 public:
42 // Return a unique pointer to EmulatedCameraProviderHwlImpl. Calling Create()
43 // again before the previous one is destroyed will fail.
44 static std::unique_ptr<EmulatedCameraProviderHwlImpl> Create();
45
~EmulatedCameraProviderHwlImpl()46 virtual ~EmulatedCameraProviderHwlImpl() {
47 WaitForStatusCallbackFuture();
48 }
49
50 // Override functions in CameraProviderHwl.
51 status_t SetCallback(const HwlCameraProviderCallback& callback) override;
52 status_t TriggerDeferredCallbacks() override;
53
54 status_t GetVendorTags(
55 std::vector<VendorTagSection>* vendor_tag_sections) override;
56
57 status_t GetVisibleCameraIds(std::vector<std::uint32_t>* camera_ids) override;
58
IsSetTorchModeSupported()59 bool IsSetTorchModeSupported() override {
60 return true;
61 }
62
63 status_t GetConcurrentStreamingCameraIds(
64 std::vector<std::unordered_set<uint32_t>>*) override;
65
66 status_t IsConcurrentStreamCombinationSupported(
67 const std::vector<CameraIdAndStreamConfiguration>&, bool*) override;
68
69 status_t CreateCameraDeviceHwl(
70 uint32_t camera_id,
71 std::unique_ptr<CameraDeviceHwl>* camera_device_hwl) override;
72
73 status_t CreateBufferAllocatorHwl(std::unique_ptr<CameraBufferAllocatorHwl>*
74 camera_buffer_allocator_hwl) override;
75
76 status_t NotifyDeviceStateChange(DeviceState device_state) override;
77 // End of override functions in CameraProviderHwl.
78
79 private:
80 status_t Initialize();
81 uint32_t ParseCharacteristics(const Json::Value& root, ssize_t id);
82 status_t GetTagFromName(const char* name, uint32_t* tag);
83 status_t WaitForQemuSfFakeCameraPropertyAvailable();
84 bool SupportsMandatoryConcurrentStreams(uint32_t camera_id);
85
86 static const char* kConfigurationFileLocation[];
87
88 std::vector<std::unique_ptr<HalCameraMetadata>> static_metadata_;
89 // Logical to physical camera Id mapping. Empty value vector in case
90 // of regular non-logical device.
91 std::unordered_map<uint32_t, std::vector<std::pair<CameraDeviceStatus, uint32_t>>> camera_id_map_;
92 HwlTorchModeStatusChangeFunc torch_cb_;
93 HwlPhysicalCameraDeviceStatusChangeFunc physical_camera_status_cb_;
94
95 std::mutex status_callback_future_lock_;
96 std::future<void> status_callback_future_;
97 void WaitForStatusCallbackFuture();
98 void NotifyPhysicalCameraUnavailable();
99 };
100
CreateCameraProviderHwl()101 extern "C" CameraProviderHwl* CreateCameraProviderHwl() {
102 auto provider = EmulatedCameraProviderHwlImpl::Create();
103 return provider.release();
104 }
105
106 } // namespace android
107
108 #endif // EMULATOR_CAMERA_HAL_HWL_CAMERA_PROVIDER_HWL_H
109