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), normalPhaseOffset_(offset), enabled_(false), isDirectly_(false)
25 {
26 }
27
~VSyncController()28 VSyncController::~VSyncController()
29 {
30 }
31
ChangeAdaptiveStatus(bool isAdaptive)32 void VSyncController::ChangeAdaptiveStatus(bool isAdaptive)
33 {
34 if (!isAdaptive) {
35 ResetOffset();
36 }
37 }
38
AdjustAdaptiveOffset(int64_t period,int64_t offset)39 void VSyncController::AdjustAdaptiveOffset(int64_t period, int64_t offset)
40 {
41 if (period <= 0) {
42 VLOGE("VSyncController::AdjustAdaptiveOffset: period is illegal.");
43 return;
44 }
45 std::lock_guard<std::mutex> locker(offsetMutex_);
46 auto remainder = (phaseOffset_ + offset) % period;
47
48 phaseOffset_ = remainder;
49 }
50
ResetOffset()51 void VSyncController::ResetOffset()
52 {
53 int64_t offset;
54 {
55 std::lock_guard<std::mutex> locker(offsetMutex_);
56 phaseOffset_ = normalPhaseOffset_;
57 offset = normalPhaseOffset_;
58 }
59 if (generator_ == nullptr) {
60 return;
61 }
62 const sptr<VSyncGenerator> generator = generator_.promote();
63 if (generator == nullptr) {
64 return;
65 }
66 generator->ChangePhaseOffset(this, offset);
67 }
68
NeedPreexecuteAndUpdateTs(int64_t & timestamp,int64_t & period)69 bool VSyncController::NeedPreexecuteAndUpdateTs(int64_t& timestamp, int64_t& period)
70 {
71 if (generator_ == nullptr) {
72 return false;
73 }
74 const sptr<VSyncGenerator> generator = generator_.promote();
75 if (generator == nullptr) {
76 return false;
77 }
78 int64_t offset = 0;
79 bool flag = generator->NeedPreexecuteAndUpdateTs(timestamp, period, offset, lastVsyncTime_.load());
80 if (flag && offset > 0) {
81 AdjustAdaptiveOffset(period, offset);
82 }
83
84 return flag;
85 }
86
SetEnable(bool enable,bool & isGeneratorEnable)87 VsyncError VSyncController::SetEnable(bool enable, bool& isGeneratorEnable)
88 {
89 if (generator_ == nullptr) {
90 return VSYNC_ERROR_NULLPTR;
91 }
92 const sptr<VSyncGenerator> generator = generator_.promote();
93 if (generator == nullptr) {
94 return VSYNC_ERROR_NULLPTR;
95 }
96 VsyncError ret = VSYNC_ERROR_OK;
97 if (enable) {
98 // If the sampler does not complete the sampling work, the generator does not work
99 // We need to tell the distributor to use the software vsync
100 isGeneratorEnable = generator->IsEnable();
101 if (isGeneratorEnable) {
102 ret = generator->AddListener(this, isRS_, isDirectly_);
103 if (ret != VSYNC_ERROR_OK) {
104 isGeneratorEnable = false;
105 }
106 } else {
107 ret = VSYNC_ERROR_API_FAILED;
108 }
109 } else {
110 ret = generator->RemoveListener(this);
111 if (ret == VSYNC_ERROR_OK) {
112 isGeneratorEnable = false;
113 }
114 }
115
116 isRS_ = false;
117 isDirectly_ = false;
118 enabled_ = isGeneratorEnable;
119 return ret;
120 }
121
SetCallback(Callback * cb)122 VsyncError VSyncController::SetCallback(Callback *cb)
123 {
124 if (cb == nullptr) {
125 return VSYNC_ERROR_NULLPTR;
126 }
127 std::lock_guard<std::mutex> locker(callbackMutex_);
128 callback_ = cb;
129 return VSYNC_ERROR_OK;
130 }
131
SetPhaseOffset(int64_t offset)132 VsyncError VSyncController::SetPhaseOffset(int64_t offset)
133 {
134 if (generator_ == nullptr) {
135 return VSYNC_ERROR_NULLPTR;
136 }
137 const sptr<VSyncGenerator> generator = generator_.promote();
138 if (generator == nullptr) {
139 return VSYNC_ERROR_NULLPTR;
140 }
141 {
142 std::lock_guard<std::mutex> locker(offsetMutex_);
143 phaseOffset_ = offset;
144 normalPhaseOffset_ = offset;
145 }
146 return generator->ChangePhaseOffset(this, offset);
147 }
148
OnVSyncEvent(int64_t now,int64_t period,uint32_t refreshRate,VSyncMode vsyncMode,uint32_t vsyncMaxRefreshRate)149 void VSyncController::OnVSyncEvent(int64_t now, int64_t period,
150 uint32_t refreshRate, VSyncMode vsyncMode, uint32_t vsyncMaxRefreshRate)
151 {
152 Callback *cb = nullptr;
153 {
154 std::lock_guard<std::mutex> locker(callbackMutex_);
155 cb = callback_;
156 }
157 if (cb != nullptr) {
158 lastVsyncTime_ = now;
159 cb->OnVSyncEvent(now, period, refreshRate, vsyncMode, vsyncMaxRefreshRate);
160 }
161 }
162
OnPhaseOffsetChanged(int64_t phaseOffset)163 void VSyncController::OnPhaseOffsetChanged(int64_t phaseOffset)
164 {
165 std::lock_guard<std::mutex> locker(offsetMutex_);
166 phaseOffset_ = phaseOffset;
167 normalPhaseOffset_ = phaseOffset;
168 }
169
GetPhaseOffset()170 int64_t VSyncController::GetPhaseOffset()
171 {
172 std::lock_guard<std::mutex> locker(offsetMutex_);
173 return phaseOffset_;
174 }
175
176 /* std::pair<id, refresh rate> */
OnConnsRefreshRateChanged(const std::vector<std::pair<uint64_t,uint32_t>> & refreshRates)177 void VSyncController::OnConnsRefreshRateChanged(const std::vector<std::pair<uint64_t, uint32_t>> &refreshRates)
178 {
179 Callback *cb = nullptr;
180 {
181 std::lock_guard<std::mutex> locker(callbackMutex_);
182 cb = callback_;
183 }
184 if (cb != nullptr) {
185 cb->OnConnsRefreshRateChanged(refreshRates);
186 }
187 }
188 }
189 }
190