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 "dcamera_softbus_latency.h"
17
18 #include "distributed_camera_constants.h"
19 #include "distributed_camera_errno.h"
20 #include "distributed_hardware_log.h"
21 #include "dcamera_softbus_adapter.h"
22 #include "softbus_bus_center.h"
23 #include "softbus_common.h"
24
25 namespace OHOS {
26 namespace DistributedHardware {
27 IMPLEMENT_SINGLE_INSTANCE(DCameraSoftbusLatency);
28
29 constexpr static int32_t MICROSECONDS = 1000;
30
OnTimeSyncResult(const TimeSyncResultInfo * info,int32_t retCode)31 static void OnTimeSyncResult(const TimeSyncResultInfo *info, int32_t retCode)
32 {
33 int32_t microsecond = info->result.millisecond * MICROSECONDS + info->result.microsecond;
34 DHLOGD("DCameraSoftbusLatency OnTimeSyncResult retcode %d, millisecond: %d, microsecond %d microsecond_ %d",
35 retCode, info->result.millisecond, info->result.microsecond, microsecond);
36 DCameraSoftbusLatency::GetInstance().SetTimeSyncInfo(microsecond, info->target.targetNetworkId);
37 }
38
StartSoftbusTimeSync(const std::string & devId)39 int32_t DCameraSoftbusLatency::StartSoftbusTimeSync(const std::string& devId)
40 {
41 DHLOGI("StartSoftbusTimeSync latency start.");
42 {
43 std::lock_guard<std::mutex> lock(micLock_);
44 if (refCount_[devId] > REF_INITIAL) {
45 refCount_[devId]++;
46 DHLOGD("No need to start time offset, refCount just plus one and now is: %d.", refCount_[devId]);
47 return DCAMERA_OK;
48 }
49 }
50 ITimeSyncCb timeSyncCb;
51 timeSyncCb.onTimeSyncResult = OnTimeSyncResult;
52 int32_t ret = StartTimeSync(DCAMERA_PKG_NAME.c_str(), devId.c_str(), LOW_ACCURACY, NORMAL_PERIOD,
53 &timeSyncCb);
54 if (ret != DCAMERA_OK) {
55 DHLOGE("DCameraSoftbusLatency:: StartSoftbusTimeSync failed networkId %s", devId.c_str());
56 }
57 {
58 std::lock_guard<std::mutex> lock(micLock_);
59 refCount_[devId]++;
60 offsets_.emplace(devId, 0);
61 }
62 DHLOGI("DCameraSoftbusLatency:: StartSoftbusTimeSync success ");
63 return DCAMERA_OK;
64 }
65
StopSoftbusTimeSync(const std::string & devId)66 int32_t DCameraSoftbusLatency::StopSoftbusTimeSync(const std::string& devId)
67 {
68 DHLOGI("DCameraSoftbusLatency::StopSoftbusTimeSync start.");
69 {
70 std::lock_guard<std::mutex> lock(micLock_);
71 if (refCount_[devId] == REF_INITIAL) {
72 DHLOGD("No need to stop time offset, refCount is zero.");
73 return DCAMERA_OK;
74 }
75 if (refCount_[devId] > REF_NORMAL) {
76 refCount_[devId]--;
77 DHLOGD("No need to stop time offset, refCount just minus one and now is: %d.", refCount_[devId]);
78 return DCAMERA_OK;
79 }
80 }
81 int32_t ret = StopTimeSync(DCAMERA_PKG_NAME.c_str(), devId.c_str());
82 if (ret != DCAMERA_OK) {
83 DHLOGE("DCameraSoftbusLatency:: StopSoftbusTimeSync failed ret:%d", ret);
84 }
85 {
86 std::lock_guard<std::mutex> lock(micLock_);
87 refCount_[devId]--;
88 offsets_.erase(devId);
89 refCount_.erase(devId);
90 }
91 return DCAMERA_OK;
92 }
93
SetTimeSyncInfo(const int32_t microsecond,const std::string & devId)94 void DCameraSoftbusLatency::SetTimeSyncInfo(const int32_t microsecond, const std::string& devId)
95 {
96 std::lock_guard<std::mutex> lock(offsetLock_);
97 offsets_[devId] = microsecond;
98 }
99
GetTimeSyncInfo(const std::string & devId)100 int32_t DCameraSoftbusLatency::GetTimeSyncInfo(const std::string& devId)
101 {
102 std::lock_guard<std::mutex> lock(offsetLock_);
103 auto dev = offsets_.find(devId);
104 if (dev == offsets_.end()) {
105 return DCAMERA_OK;
106 }
107 return offsets_[devId];
108 }
109 } // namespace DistributedHardware
110 }