1 /*
2 * Copyright (c) 2022-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <hdf_base.h>
17 #include <hdf_device_desc.h>
18 #include <hdf_log.h>
19 #include <hdf_sbuf_ipc.h>
20
21 #include "dcamera_host.h"
22 #include "v1_3/camera_host_stub.h"
23
24 #include <shared_mutex>
25 using namespace OHOS::HDI::Camera::V1_3;
26
27 namespace {
28 std::shared_mutex mutex_;
29 }
30
31 struct HdfCameraHostHost {
32 struct IDeviceIoService ioService;
33 OHOS::sptr<OHOS::IRemoteObject> stub;
34 };
35
CameraHostDriverDispatch(struct HdfDeviceIoClient * client,int cmdId,struct HdfSBuf * data,struct HdfSBuf * reply)36 static int32_t CameraHostDriverDispatch(struct HdfDeviceIoClient *client, int cmdId, struct HdfSBuf *data,
37 struct HdfSBuf *reply)
38 {
39 OHOS::MessageParcel *dataParcel = nullptr;
40 OHOS::MessageParcel *replyParcel = nullptr;
41 OHOS::MessageOption option;
42
43 if (SbufToParcel(data, &dataParcel) != HDF_SUCCESS) {
44 HDF_LOGE("%{public}s:invalid data sbuf object to dispatch", __func__);
45 return HDF_ERR_INVALID_PARAM;
46 }
47 if (SbufToParcel(reply, &replyParcel) != HDF_SUCCESS) {
48 HDF_LOGE("%{public}s:invalid reply sbuf object to dispatch", __func__);
49 return HDF_ERR_INVALID_PARAM;
50 }
51
52 std::shared_lock lock(mutex_);
53 if (client == nullptr || client->device == nullptr || client->device->service == nullptr) {
54 HDF_LOGE("%{public}s: client or client.device or service is nullptr", __func__);
55 return HDF_FAILURE;
56 }
57 auto *hdfCameraHostHost = CONTAINER_OF(client->device->service, struct HdfCameraHostHost, ioService);
58 if (hdfCameraHostHost == NULL || hdfCameraHostHost->stub == NULL) {
59 HDF_LOGE("%{public}s:invalid hdfCameraHostHost", __func__);
60 return HDF_ERR_INVALID_PARAM;
61 }
62 return hdfCameraHostHost->stub->SendRequest(cmdId, *dataParcel, *replyParcel, option);
63 }
64
HdfCameraHostDriverInit(struct HdfDeviceObject * deviceObject)65 static int HdfCameraHostDriverInit(struct HdfDeviceObject *deviceObject)
66 {
67 HDF_LOGI("HdfCameraHostDriverInit enter");
68 if (deviceObject == nullptr) {
69 HDF_LOGE("HdfCameraHostDriverInit:: HdfDeviceObject is NULL !");
70 return HDF_FAILURE;
71 }
72
73 if (!HdfDeviceSetClass(deviceObject, DEVICE_CLASS_CAMERA)) {
74 HDF_LOGE("HdfCameraHostDriverInit set camera class failed");
75 return HDF_FAILURE;
76 }
77 return HDF_SUCCESS;
78 }
79
HdfCameraHostDriverBind(struct HdfDeviceObject * deviceObject)80 static int HdfCameraHostDriverBind(struct HdfDeviceObject *deviceObject)
81 {
82 if (deviceObject == nullptr) {
83 HDF_LOGE("HdfCameraHostDriverBind:: HdfDeviceObject is NULL !");
84 return HDF_FAILURE;
85 }
86 HDF_LOGI("HdfCameraHostDriverBind enter");
87
88 auto *hdfCameraHostHost = new (std::nothrow) HdfCameraHostHost;
89 if (hdfCameraHostHost == nullptr) {
90 HDF_LOGE("%{public}s: failed to create create HdfCameraHostHost object", __func__);
91 return HDF_FAILURE;
92 }
93
94 hdfCameraHostHost->ioService.Dispatch = CameraHostDriverDispatch;
95 hdfCameraHostHost->ioService.Open = NULL;
96 hdfCameraHostHost->ioService.Release = NULL;
97
98 auto serviceImpl = OHOS::DistributedHardware::DCameraHost::GetInstance();
99 if (serviceImpl == nullptr) {
100 HDF_LOGE("%{public}s: failed to get of implement service", __func__);
101 delete hdfCameraHostHost;
102 return HDF_FAILURE;
103 }
104
105 hdfCameraHostHost->stub = OHOS::HDI::ObjectCollector::GetInstance().GetOrNewObject(serviceImpl,
106 HDI::Camera::V1_3::ICameraHost::GetDescriptor());
107 if (hdfCameraHostHost->stub == nullptr) {
108 HDF_LOGE("%{public}s: failed to get stub object", __func__);
109 delete hdfCameraHostHost;
110 return HDF_FAILURE;
111 }
112
113 deviceObject->service = &hdfCameraHostHost->ioService;
114 return HDF_SUCCESS;
115 }
116
HdfCameraHostDriverRelease(struct HdfDeviceObject * deviceObject)117 static void HdfCameraHostDriverRelease(struct HdfDeviceObject *deviceObject)
118 {
119 HDF_LOGI("HdfCameraHostDriverRelease enter");
120 if (deviceObject == nullptr || deviceObject->service == nullptr) {
121 HDF_LOGE("HdfCameraHostDriverRelease not initted");
122 return;
123 }
124
125 std::unique_lock lock(mutex_);
126 auto *hdfCameraHostHost = CONTAINER_OF(deviceObject->service, struct HdfCameraHostHost, ioService);
127 if (hdfCameraHostHost != nullptr) {
128 hdfCameraHostHost->stub = nullptr;
129 }
130 delete hdfCameraHostHost;
131 hdfCameraHostHost = nullptr;
132 if (deviceObject != nullptr) {
133 deviceObject->service = nullptr;
134 }
135 }
136
137 static struct HdfDriverEntry g_camerahostDriverEntry = {
138 .moduleVersion = 1,
139 .moduleName = "distributed_camera_service",
140 .Bind = HdfCameraHostDriverBind,
141 .Init = HdfCameraHostDriverInit,
142 .Release = HdfCameraHostDriverRelease,
143 };
144
145 #ifdef __cplusplus
146 extern "C" {
147 #endif /* __cplusplus */
148
149 HDF_INIT(g_camerahostDriverEntry);
150
151 #ifdef __cplusplus
152 }
153 #endif /* __cplusplus */
154