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 "report_data_callback.h"
17
18 #include <cstdlib>
19 #include <cstring>
20
21 #include "errors.h"
22 #include "securec.h"
23 #include "sensors_errors.h"
24 #include "sensors_log_domain.h"
25
26 namespace OHOS {
27 namespace Sensors {
28 using namespace OHOS::HiviewDFX;
29
30 namespace {
31 constexpr OHOS::HiviewDFX::HiLogLabel LABEL = {
32 LOG_CORE, SensorsLogDomain::SENSOR_UTILS, "ReportDataCallback"
33 };
34 } // namespace
ReportDataCallback()35 ReportDataCallback::ReportDataCallback()
36 {
37 eventsBuf_.circularBuf = new struct SensorEvent[CIRCULAR_BUF_LEN];
38 eventsBuf_.readPosition = 0;
39 eventsBuf_.writePosition = 0;
40 eventsBuf_.eventNum = 0;
41 }
42
~ReportDataCallback()43 ReportDataCallback::~ReportDataCallback()
44 {
45 if (eventsBuf_.circularBuf != nullptr) {
46 delete[] eventsBuf_.circularBuf;
47 }
48 eventsBuf_.circularBuf = nullptr;
49 eventsBuf_.readPosition = 0;
50 eventsBuf_.writePosition = 0;
51 eventsBuf_.eventNum = 0;
52 }
53
ZReportDataCallback(const struct SensorEvent * event,sptr<ReportDataCallback> cb)54 int32_t ReportDataCallback::ZReportDataCallback(const struct SensorEvent* event, sptr<ReportDataCallback> cb)
55 {
56 if (event == nullptr) {
57 HiLog::Error(LABEL, "%{public}s sensor data is null", __func__);
58 return ERROR;
59 }
60 if (cb == nullptr || cb->eventsBuf_.circularBuf == nullptr) {
61 HiLog::Error(LABEL, "%{public}s callback or circularBuf or event cannot be null", __func__);
62 delete[] event->data;
63 return ERROR;
64 }
65 int32_t leftSize = CIRCULAR_BUF_LEN - cb->eventsBuf_.eventNum;
66 int32_t toEndLen = CIRCULAR_BUF_LEN - cb->eventsBuf_.writePosition;
67 if (toEndLen == 0) {
68 cb->eventsBuf_.circularBuf[0] = *event;
69 cb->eventsBuf_.writePosition = 1 - toEndLen;
70 } else {
71 cb->eventsBuf_.circularBuf[cb->eventsBuf_.writePosition] = *event;
72 cb->eventsBuf_.writePosition += 1;
73 }
74 if (leftSize < 1) {
75 cb->eventsBuf_.readPosition = cb->eventsBuf_.writePosition;
76 }
77 cb->eventsBuf_.eventNum += 1;
78 if (cb->eventsBuf_.eventNum >= CIRCULAR_BUF_LEN) {
79 cb->eventsBuf_.eventNum = CIRCULAR_BUF_LEN;
80 }
81 if (cb->eventsBuf_.writePosition == CIRCULAR_BUF_LEN) {
82 cb->eventsBuf_.writePosition = 0;
83 }
84 return ERR_OK;
85 }
86
GetEventData()87 struct CircularEventBuf &ReportDataCallback::GetEventData()
88 {
89 return eventsBuf_;
90 }
91 } // namespace Sensors
92 } // namespace OHOS
93