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 "layer_cache.h"
17
18#include "buffer_cache_utils.h"
19#include "common/include/display_interface_utils.h"
20#include "hdf_base.h"
21#include "hdf_log.h"
22
23namespace OHOS {
24namespace HDI {
25namespace Display {
26namespace Composer {
27
28LayerCache* LayerCache::Create(uint32_t id)
29{
30    LayerCache* layer = new LayerCache(id);
31    DISPLAY_CHK_RETURN(layer == nullptr, nullptr, HDF_LOGE("%{public}s: create layer cache failed", __func__));
32
33    int32_t ret = layer->Init();
34    if (ret != HDF_SUCCESS) {
35        delete layer;
36        layer = nullptr;
37        HDF_LOGE("%{public}s: layer cache init failed", __func__);
38    }
39
40    return layer;
41}
42
43LayerCache::LayerCache(uint32_t id) : layerId_(id)
44{
45}
46
47LayerCache::~LayerCache()
48{
49}
50
51int32_t LayerCache::Init()
52{
53    bufferCaches_.reset(new CacheManager<uint32_t, NativeBuffer>());
54    DISPLAY_CHK_RETURN(bufferCaches_ == nullptr, HDF_FAILURE,
55        HDF_LOGE("%{public}s: create buffer caches failed", __func__));
56
57    bufferCaches_->SetInitFunc(NativeBufferInit);
58    bufferCaches_->SetCleanUpFunc(NativeBufferCleanUp);
59    return HDF_SUCCESS;
60}
61
62int32_t LayerCache::SetBufferCacheMaxCount(uint32_t cacheCount)
63{
64    bool ret = bufferCaches_->SetCacheMaxCount(cacheCount);
65    DISPLAY_CHK_RETURN(ret == false, HDF_FAILURE, HDF_LOGE("%{public}s: failed", __func__));
66    return HDF_SUCCESS;
67}
68
69int32_t LayerCache::SetLayerBuffer(BufferHandle*& buffer, uint32_t seqNo, bool &needFreeBuffer,
70    const std::vector<uint32_t>& deletingList, std::function<int32_t (const BufferHandle&)> realFunc)
71{
72    if (buffer != nullptr) {
73        HDF_LOGI("%{public}s, seqNo %{public}u, fd %{public}d, size %{public}d", __func__, seqNo, buffer->fd,
74                 buffer->size);
75    }
76    for (auto num : deletingList) {
77        (void)bufferCaches_->EraseCache(num);
78    }
79
80    BufferHandle* handle = BufferCacheUtils::NativeBufferCache(bufferCaches_, buffer, seqNo, layerId_, needFreeBuffer);
81    DISPLAY_CHK_RETURN(handle == nullptr, HDF_FAILURE,
82        HDF_LOGE("%{public}s: call NativeBufferCache fail", __func__));
83    int32_t ret = realFunc(*handle);
84    if (ret != HDF_SUCCESS) {
85        bufferCaches_->EraseCache(seqNo);
86        buffer = nullptr;
87        HDF_LOGE("%{public}s: call realFunc fail", __func__);
88    }
89
90    return HDF_SUCCESS;
91}
92
93int32_t LayerCache::ResetLayerBuffer()
94{
95    HDF_LOGI("%{public}s", __func__);
96    return Init();
97}
98
99void LayerCache::NativeBufferInit(sptr<NativeBuffer>& buffer)
100{
101    if (buffer == nullptr) {
102        HDF_LOGW("NativeBufferInit buffer nullptr!");
103        return;
104    }
105    int32_t ret = RegisterBuffer(buffer);
106    if (ret != HDF_SUCCESS) {
107        HDF_LOGE("%{public}s: RegisterBuffer failed with %{public}d!", __func__, ret);
108    }
109}
110
111void LayerCache::NativeBufferCleanUp(sptr<NativeBuffer>& buffer)
112{
113    if (buffer == nullptr) {
114        HDF_LOGW("NativeBufferCleanUp buffer nullptr!");
115        return;
116    }
117    int32_t ret = FreeMem(buffer);
118    if (ret != HDF_SUCCESS) {
119        HDF_LOGE("%{public}s: FreeMem failed with %{public}d!", __func__, ret);
120    }
121}
122
123sptr<Buffer::V1_1::IMetadata> LayerCache::GetMetaService()
124{
125    static sptr<Buffer::V1_1::IMetadata> metaService = nullptr;
126    if (metaService == nullptr) {
127        metaService = Buffer::V1_1::IMetadata::Get(true);
128    }
129    return metaService;
130}
131
132sptr<Buffer::V1_2::IMapper> LayerCache::GetMapperService()
133{
134    static sptr<Buffer::V1_2::IMapper> mapperService = nullptr;
135    if (mapperService == nullptr) {
136        mapperService = Buffer::V1_2::IMapper::Get(true);
137    }
138    return mapperService;
139}
140
141int32_t LayerCache::Mmap(sptr<NativeBuffer>& buffer)
142{
143    auto mapperService = GetMapperService();
144    if (mapperService == nullptr) {
145        HDF_LOGE("GetMapperService failed!");
146        return HDF_FAILURE;
147    }
148    return mapperService->Mmap(buffer);
149}
150
151int32_t LayerCache::Unmap(sptr<NativeBuffer>& buffer)
152{
153    auto mapperService = GetMapperService();
154    if (mapperService == nullptr) {
155        HDF_LOGE("GetMapperService failed!");
156        return HDF_FAILURE;
157    }
158    return mapperService->Unmap(buffer);
159}
160
161int32_t LayerCache::FreeMem(sptr<NativeBuffer>& buffer)
162{
163    auto mapperService = GetMapperService();
164    if (mapperService == nullptr) {
165        HDF_LOGE("GetMapperService failed!");
166        return HDF_FAILURE;
167    }
168    int32_t ret = Unmap(buffer);
169    if (ret != HDF_SUCCESS) {
170        HDF_LOGE("Unmap failed!");
171    }
172    return mapperService->FreeMem(buffer);
173}
174
175int32_t LayerCache::RegisterBuffer(sptr<NativeBuffer>& buffer)
176{
177    auto metaService = GetMetaService();
178    if (metaService == nullptr) {
179        return HDF_FAILURE;
180    }
181    int32_t ret = metaService->RegisterBuffer(buffer);
182    if (ret != HDF_SUCCESS) {
183        HDF_LOGE("Register Buffer failed!");
184        return ret;
185    }
186    ret = Mmap(buffer);
187    if (ret != HDF_SUCCESS) {
188        HDF_LOGE("Mmap failed!");
189    }
190    return HDF_SUCCESS;
191}
192
193void LayerCache::Dump() const
194{
195    bufferCaches_->TravelCaches([this](const int32_t id, const NativeBuffer& buffer)->void {
196        auto info = buffer.Dump();
197        HDF_LOGE("layerId-%{public}d, buffer[%{public}d]: %{public}s", layerId_, id, info.c_str());
198    });
199}
200} // namespace Composer
201} // namespace Display
202} // namespace HDI
203} // namespace OHOS
204