1/*
2 * Copyright (c) 2021-2022 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 "snapshot_controller.h"
17
18#include <hitrace_meter.h>
19
20#include "surface_capture_future.h"
21#include "surface_draw.h"
22#include "window_manager_hilog.h"
23#include "wm_common.h"
24
25namespace OHOS {
26namespace Rosen {
27namespace {
28constexpr HiviewDFX::HiLogLabel LABEL = {LOG_CORE, HILOG_DOMAIN_DISPLAY, "SnapshotController"};
29}
30
31int32_t SnapshotController::GetSnapshot(const sptr<IRemoteObject>& token, Snapshot& snapshot)
32{
33    HITRACE_METER_FMT(HITRACE_TAG_WINDOW_MANAGER, "wms:GetSnapshot");
34    if (token == nullptr) {
35        WLOGFE("Get snapshot failed, because token is null.");
36        return static_cast<int32_t>(WMError::WM_ERROR_NULLPTR);
37    }
38    if (handler_ == nullptr || windowRoot_ == nullptr) {
39        WLOGFE("Get snapshot failed, because handler/root is null.");
40        return static_cast<int32_t>(WMError::WM_ERROR_NULLPTR);
41    }
42
43    performReport_->start();
44    // get snapshot cache in wms main handler
45    std::shared_ptr<Media::PixelMap> pixelMap;
46    std::shared_ptr<RSSurfaceNode> surfaceNode;
47    auto task = [this, &pixelMap, &surfaceNode, token] () {
48        auto targetNode = windowRoot_->GetWindowNodeByAbilityToken(token);
49        if (targetNode != nullptr) {
50            pixelMap = targetNode->GetSnapshot();
51            targetNode->SetSnapshot(nullptr); // reset window snapshot after use
52            if (targetNode->surfaceNode_ && targetNode->firstFrameAvailable_) {
53                surfaceNode = targetNode->surfaceNode_;
54            } else {
55                surfaceNode = targetNode->startingWinSurfaceNode_;
56            }
57        }
58    };
59    handler_->PostSyncTask(task, "wms:GetSnapshot", AppExecFwk::EventQueue::Priority::IMMEDIATE);
60
61    // do snapshot if no cache
62    if (pixelMap == nullptr) {
63        // snapshot time out 300ms
64        bool snapSucc = SurfaceDraw::GetSurfaceSnapshot(surfaceNode, pixelMap, SNAPSHOT_TIMEOUT_MS);
65        if (!snapSucc) {
66            return static_cast<int32_t>(WMError::WM_ERROR_NULLPTR);
67        }
68    }
69
70    // success to snapshot
71    snapshot.SetPixelMap(pixelMap);
72    performReport_->end();
73    return static_cast<int32_t>(WM_OK);
74}
75} // namespace Rosen
76} // namespace OHOS