1 /*
2 * Copyright (C) 2021–2022 Beijing OSWare Technology Co., Ltd
3 * This file contains confidential and proprietary information of
4 * OSWare Technology Co., Ltd
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 #include "display_adapter.h"
19 #include <cstdarg>
20 #include <fcntl.h>
21 #include <sys/types.h>
22 #include <unistd.h>
23 namespace OHOS {
24 namespace HDI {
25 namespace DISPLAY {
GetInstance()26 std::unique_ptr<DisplayAdapter> &DisplayAdapter::GetInstance()
27 {
28 static std::unique_ptr<DisplayAdapter> instance = nullptr;
29 static std::once_flag once;
30 std::call_once(once, [&]() {
31 auto adapter = std::make_unique<DisplayAdapter>();
32 if (adapter != nullptr) {
33 int ret = adapter->Init();
34 if (ret == DISPLAY_SUCCESS) {
35 instance = std::move(adapter);
36 }
37 }
38 });
39 return instance;
40 }
41
Init()42 int32_t DisplayAdapter::Init()
43 {
44 loader_ = DisplayModuleLoader::Create(LIB_NAME_ADAPTER);
45 if (loader_ == nullptr) {
46 DISPLAY_LOGE("can not create loader");
47 return DISPLAY_FAILURE;
48 }
49 initFunc_ = reinterpret_cast<AdapterInitFunc>(loader_->GetSymbol(INIT_FUNCTION_NAME));
50 if (initFunc_ == nullptr) {
51 DISPLAY_LOGE("failed to get function %{public}s", INIT_FUNCTION_NAME);
52 return DISPLAY_FAILURE;
53 }
54 deInitFunc_ = reinterpret_cast<AdapterDeInitFunc>(loader_->GetSymbol(DEINIT_FUNCTION_NAME));
55 if (deInitFunc_ == nullptr) {
56 DISPLAY_LOGE("failed to get function %{public}s", DEINIT_FUNCTION_NAME);
57 return DISPLAY_FAILURE;
58 }
59 int ret = initFunc_(&funcs_);
60 if ((ret != DISPLAY_SUCCESS) || (funcs_ == nullptr)) {
61 DISPLAY_LOGE("failed to get display adapter functions");
62 return DISPLAY_FAILURE;
63 }
64 return DISPLAY_SUCCESS;
65 }
66
~DisplayAdapter()67 DisplayAdapter::~DisplayAdapter()
68 {
69 if ((funcs_ != nullptr) && (deInitFunc_ != nullptr)) {
70 deInitFunc_(funcs_);
71 }
72 }
73
OpenDevice(const std::string & pathName,int32_t flags,mode_t mode)74 int32_t DisplayAdapter::OpenDevice(const std::string &pathName, int32_t flags, mode_t mode)
75 {
76 if (funcs_->OpenDevice != nullptr) {
77 DISPLAY_LOGD("use the adapter open function");
78 return funcs_->OpenDevice(pathName.c_str(), flags, mode);
79 } else {
80 return open(pathName.c_str(), flags, mode);
81 }
82 }
83
CloseDevice(int32_t devFd)84 int32_t DisplayAdapter::CloseDevice(int32_t devFd)
85 {
86 if (funcs_->CloseDevice != nullptr) {
87 DISPLAY_LOGD("use the adapter close function");
88 return funcs_->CloseDevice(devFd);
89 } else {
90 return close(devFd);
91 }
92 }
93
Ioctl(int32_t devFd,uint32_t cmd,void * args)94 int32_t DisplayAdapter::Ioctl(int32_t devFd, uint32_t cmd, void *args)
95 {
96 int32_t ret = -1;
97 if (funcs_->Ioctl != nullptr) {
98 DISPLAY_LOGD("use the adapter ioctl function");
99 ret = funcs_->Ioctl(devFd, cmd, args);
100 } else {
101 ret = ioctl(devFd, cmd, args);
102 }
103 return ret;
104 }
105
FbGetDmaBuffer(int32_t devFd)106 int32_t DisplayAdapter::FbGetDmaBuffer(int32_t devFd)
107 {
108 if (funcs_->FbGetDmaBuffer == nullptr) {
109 DISPLAY_LOGE("has no function to get fb dmabuffer");
110 return -1;
111 }
112 return funcs_->FbGetDmaBuffer(devFd);
113 }
114
FbFresh(int32_t devFd,DisplayFrameInfo & frame)115 int32_t DisplayAdapter::FbFresh(int32_t devFd, DisplayFrameInfo &frame)
116 {
117 if (funcs_->FbFresh == nullptr) {
118 DISPLAY_LOGE("has no function to fresh fb");
119 return -1;
120 }
121 return funcs_->FbFresh(devFd, &frame);
122 }
123 } // namespace DISPLAY
124 } // namespace HDI
125 } // namespace OHOS