1 /*
2 * Copyright (c) 2023 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 "allocator_service.h"
17
18 #include <dlfcn.h>
19 #include <hdf_base.h>
20 #include <hdf_log.h>
21 #include "display_log.h"
22
23 #undef LOG_TAG
24 #define LOG_TAG "ALLOC_SRV"
25 #undef LOG_DOMAIN
26 #define LOG_DOMAIN 0xD002500
27
28 namespace OHOS {
29 namespace HDI {
30 namespace Display {
31 namespace Buffer {
32 namespace V1_0 {
AllocatorImplGetInstance(void)33 extern "C" IAllocator* AllocatorImplGetInstance(void)
34 {
35 return new (std::nothrow) AllocatorService();
36 }
37
AllocatorService()38 AllocatorService::AllocatorService()
39 : libHandle_(nullptr),
40 vdiImpl_(nullptr),
41 createVdi_(nullptr),
42 destroyVdi_(nullptr)
43 {
44 int32_t ret = LoadVdi();
45 if (ret == HDF_SUCCESS) {
46 vdiImpl_ = createVdi_();
47 CHECK_NULLPOINTER_RETURN(vdiImpl_);
48 } else {
49 HDF_LOGE("%{public}s: Load buffer VDI failed, lib: %{public}s", __func__, DISPLAY_BUFFER_VDI_LIBRARY);
50 }
51 }
52
~AllocatorService()53 AllocatorService::~AllocatorService()
54 {
55 if (destroyVdi_ != nullptr && vdiImpl_ != nullptr) {
56 destroyVdi_(vdiImpl_);
57 }
58 if (libHandle_ != nullptr) {
59 dlclose(libHandle_);
60 }
61 }
62
LoadVdi()63 int32_t AllocatorService::LoadVdi()
64 {
65 const char* errStr = dlerror();
66 if (errStr != nullptr) {
67 HDF_LOGI("%{public}s: allocator loadvid, clear earlier dlerror: %{public}s", __func__, errStr);
68 }
69 libHandle_ = dlopen(DISPLAY_BUFFER_VDI_LIBRARY, RTLD_LAZY);
70 CHECK_NULLPOINTER_RETURN_VALUE(libHandle_, HDF_FAILURE);
71
72 createVdi_ = reinterpret_cast<CreateDisplayBufferVdiFunc>(dlsym(libHandle_, "CreateDisplayBufferVdi"));
73 if (createVdi_ == nullptr) {
74 errStr = dlerror();
75 if (errStr != nullptr) {
76 HDF_LOGE("%{public}s: allocator CreateDisplayBufferVdi dlsym error: %{public}s", __func__, errStr);
77 }
78 dlclose(libHandle_);
79 return HDF_FAILURE;
80 }
81
82 destroyVdi_ = reinterpret_cast<DestroyDisplayBufferVdiFunc>(dlsym(libHandle_, "DestroyDisplayBufferVdi"));
83 if (destroyVdi_ == nullptr) {
84 errStr = dlerror();
85 if (errStr != nullptr) {
86 HDF_LOGE("%{public}s: allocator DestroyDisplayBufferVdi dlsym error: %{public}s", __func__, errStr);
87 }
88 dlclose(libHandle_);
89 return HDF_FAILURE;
90 }
91 return HDF_SUCCESS;
92 }
93
AllocMem(const AllocInfo & info,sptr<NativeBuffer> & handle)94 int32_t AllocatorService::AllocMem(const AllocInfo& info, sptr<NativeBuffer>& handle)
95 {
96 BufferHandle* buffer = nullptr;
97 CHECK_NULLPOINTER_RETURN_VALUE(vdiImpl_, HDF_FAILURE);
98 int32_t ec = vdiImpl_->AllocMem(info, buffer);
99 if (ec != HDF_SUCCESS) {
100 HDF_LOGE("%{public}s: AllocMem failed, ec = %{public}d", __func__, ec);
101 return ec;
102 }
103 CHECK_NULLPOINTER_RETURN_VALUE(buffer, HDF_DEV_ERR_NO_MEMORY);
104
105 handle = new NativeBuffer();
106 if (handle == nullptr) {
107 HDF_LOGE("%{public}s: new NativeBuffer failed", __func__);
108 delete handle;
109 vdiImpl_->FreeMem(*buffer);
110 return HDF_FAILURE;
111 }
112
113 handle->SetBufferHandle(buffer, true, [this](BufferHandle* freeBuffer) {
114 vdiImpl_->FreeMem(*freeBuffer);
115 });
116 return HDF_SUCCESS;
117 }
118 } // namespace V1_0
119 } // namespace Buffer
120 } // namespace Display
121 } // namespace HDI
122 } // namespace OHOS
123