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 "anonymous_string.h"
19 #include "distributed_camera_constants.h"
20 #include "distributed_camera_errno.h"
21 #include "distributed_hardware_log.h"
22 #include "dcamera_softbus_adapter.h"
23 #include "softbus_bus_center.h"
24 #include "softbus_common.h"
25
26 namespace OHOS {
27 namespace DistributedHardware {
28 IMPLEMENT_SINGLE_INSTANCE(DCameraSoftbusLatency);
29
30 constexpr static int32_t MICROSECONDS = 1000;
31
OnTimeSyncResult(const TimeSyncResultInfo * info,int32_t retCode)32 static void OnTimeSyncResult(const TimeSyncResultInfo *info, int32_t retCode)
33 {
34 if (info == nullptr) {
35 DHLOGE("Camera info is null");
36 return;
37 }
38 int32_t microsecond = info->result.millisecond * MICROSECONDS + info->result.microsecond;
39 DHLOGD("DCameraSoftbusLatency OnTimeSyncResult retcode %{public}d, millisecond: %{public}d, microsecond %{public}d "
40 "microsecond_ %{public}d", retCode, info->result.millisecond, info->result.microsecond, microsecond);
41 DCameraSoftbusLatency::GetInstance().SetTimeSyncInfo(microsecond, info->target.targetNetworkId);
42 }
43
StartSoftbusTimeSync(const std::string & devId)44 int32_t DCameraSoftbusLatency::StartSoftbusTimeSync(const std::string& devId)
45 {
46 DHLOGI("StartSoftbusTimeSync latency start.");
47 {
48 std::lock_guard<std::mutex> lock(micLock_);
49 if (refCount_[devId] > REF_INITIAL) {
50 refCount_[devId]++;
51 DHLOGD("No need to start time offset, refCount just plus one and now is: %{public}d.", refCount_[devId]);
52 return DCAMERA_OK;
53 }
54 }
55 ITimeSyncCb timeSyncCb;
56 timeSyncCb.onTimeSyncResult = OnTimeSyncResult;
57 int32_t ret = StartTimeSync(DCAMERA_PKG_NAME.c_str(), devId.c_str(), LOW_ACCURACY, NORMAL_PERIOD,
58 &timeSyncCb);
59 if (ret != DCAMERA_OK) {
60 DHLOGE("DCameraSoftbusLatency:: StartSoftbusTimeSync failed networkId %{public}s",
61 GetAnonyString(devId).c_str());
62 }
63 {
64 std::lock_guard<std::mutex> lock(micLock_);
65 refCount_[devId]++;
66 offsets_.emplace(devId, 0);
67 }
68 DHLOGI("DCameraSoftbusLatency:: StartSoftbusTimeSync success ");
69 return DCAMERA_OK;
70 }
71
StopSoftbusTimeSync(const std::string & devId)72 int32_t DCameraSoftbusLatency::StopSoftbusTimeSync(const std::string& devId)
73 {
74 DHLOGI("DCameraSoftbusLatency::StopSoftbusTimeSync start.");
75 {
76 std::lock_guard<std::mutex> lock(micLock_);
77 if (refCount_[devId] == REF_INITIAL) {
78 DHLOGD("No need to stop time offset, refCount is zero.");
79 return DCAMERA_OK;
80 }
81 if (refCount_[devId] > REF_NORMAL) {
82 refCount_[devId]--;
83 DHLOGD("No need to stop time offset, refCount just minus one and now is: %{public}d.", refCount_[devId]);
84 return DCAMERA_OK;
85 }
86 }
87 int32_t ret = StopTimeSync(DCAMERA_PKG_NAME.c_str(), devId.c_str());
88 if (ret != DCAMERA_OK) {
89 DHLOGE("DCameraSoftbusLatency:: StopSoftbusTimeSync failed ret:%{public}d", ret);
90 }
91 {
92 std::lock_guard<std::mutex> lock(micLock_);
93 refCount_[devId]--;
94 offsets_.erase(devId);
95 refCount_.erase(devId);
96 }
97 return DCAMERA_OK;
98 }
99
SetTimeSyncInfo(const int32_t microsecond,const std::string & devId)100 void DCameraSoftbusLatency::SetTimeSyncInfo(const int32_t microsecond, const std::string& devId)
101 {
102 std::lock_guard<std::mutex> lock(offsetLock_);
103 offsets_[devId] = microsecond;
104 }
105
GetTimeSyncInfo(const std::string & devId)106 int32_t DCameraSoftbusLatency::GetTimeSyncInfo(const std::string& devId)
107 {
108 std::lock_guard<std::mutex> lock(offsetLock_);
109 auto dev = offsets_.find(devId);
110 if (dev == offsets_.end()) {
111 return DCAMERA_OK;
112 }
113 return offsets_[devId];
114 }
115 } // namespace DistributedHardware
116 }