1 /*
2 * Copyright (c) 2021 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 "vsync_controller.h"
17 #include <scoped_bytrace.h>
18 #include "vsync_log.h"
19
20 namespace OHOS {
21 namespace Rosen {
VSyncController(const sptr<VSyncGenerator> & geng,int64_t offset)22 VSyncController::VSyncController(const sptr<VSyncGenerator> &geng, int64_t offset)
23 : generator_(geng), callbackMutex_(), callback_(nullptr),
24 offsetMutex_(), phaseOffset_(offset), enabled_(false)
25 {
26 }
27
~VSyncController()28 VSyncController::~VSyncController()
29 {
30 }
31
SetEnable(bool enable,bool & isGeneratorEnable)32 VsyncError VSyncController::SetEnable(bool enable, bool& isGeneratorEnable)
33 {
34 if (generator_ == nullptr) {
35 return VSYNC_ERROR_NULLPTR;
36 }
37 const sptr<VSyncGenerator> generator = generator_.promote();
38 if (generator == nullptr) {
39 return VSYNC_ERROR_NULLPTR;
40 }
41 int64_t phaseOffset;
42 {
43 std::lock_guard<std::mutex> locker(offsetMutex_);
44 phaseOffset = phaseOffset_;
45 }
46 VsyncError ret = VSYNC_ERROR_OK;
47 if (enable) {
48 // If the sampler does not complete the sampling work, the generator does not work
49 // We need to tell the distributor to use the software vsync
50 isGeneratorEnable = generator->IsEnable();
51 if (isGeneratorEnable) {
52 ret = generator->AddListener(phaseOffset, this);
53 if (ret != VSYNC_ERROR_OK) {
54 isGeneratorEnable = false;
55 }
56 } else {
57 ret = VSYNC_ERROR_API_FAILED;
58 }
59 } else {
60 ret = generator->RemoveListener(this);
61 if (ret == VSYNC_ERROR_OK) {
62 isGeneratorEnable = false;
63 }
64 }
65
66 enabled_ = isGeneratorEnable;
67 return ret;
68 }
69
SetCallback(Callback * cb)70 VsyncError VSyncController::SetCallback(Callback *cb)
71 {
72 if (cb == nullptr) {
73 return VSYNC_ERROR_NULLPTR;
74 }
75 std::lock_guard<std::mutex> locker(callbackMutex_);
76 callback_ = cb;
77 return VSYNC_ERROR_OK;
78 }
79
SetPhaseOffset(int64_t offset)80 VsyncError VSyncController::SetPhaseOffset(int64_t offset)
81 {
82 if (generator_ == nullptr) {
83 return VSYNC_ERROR_NULLPTR;
84 }
85 const sptr<VSyncGenerator> generator = generator_.promote();
86 if (generator == nullptr) {
87 return VSYNC_ERROR_NULLPTR;
88 }
89 {
90 std::lock_guard<std::mutex> locker(offsetMutex_);
91 phaseOffset_ = offset;
92 }
93 return generator->ChangePhaseOffset(this, offset);
94 }
95
OnVSyncEvent(int64_t now,int64_t period,uint32_t refreshRate,VSyncMode vsyncMode,uint32_t vsyncMaxRefreshRate)96 void VSyncController::OnVSyncEvent(int64_t now, int64_t period,
97 uint32_t refreshRate, VSyncMode vsyncMode, uint32_t vsyncMaxRefreshRate)
98 {
99 Callback *cb = nullptr;
100 {
101 std::lock_guard<std::mutex> locker(callbackMutex_);
102 cb = callback_;
103 }
104 if (cb != nullptr) {
105 cb->OnVSyncEvent(now, period, refreshRate, vsyncMode, vsyncMaxRefreshRate);
106 }
107 }
108
OnPhaseOffsetChanged(int64_t phaseOffset)109 void VSyncController::OnPhaseOffsetChanged(int64_t phaseOffset)
110 {
111 std::lock_guard<std::mutex> locker(offsetMutex_);
112 phaseOffset_ = phaseOffset;
113 }
114
115 /* std::pair<id, refresh rate> */
OnConnsRefreshRateChanged(const std::vector<std::pair<uint64_t,uint32_t>> & refreshRates)116 void VSyncController::OnConnsRefreshRateChanged(const std::vector<std::pair<uint64_t, uint32_t>> &refreshRates)
117 {
118 Callback *cb = nullptr;
119 {
120 std::lock_guard<std::mutex> locker(callbackMutex_);
121 cb = callback_;
122 }
123 if (cb != nullptr) {
124 cb->OnConnsRefreshRateChanged(refreshRates);
125 }
126 }
127 }
128 }
129