1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <pixelstats/DropDetect.h>
#include <chre/util/nanoapp/app_id.h>
#include <chre_host/host_protocol_host.h>
#include <chre_host/socket_client.h>
#include <android/frameworks/stats/1.0/IStats.h>
#define LOG_TAG "pixelstats-vendor"
#include <log/log.h>
#include <inttypes.h>
using android::sp;
using android::chre::HostProtocolHost;
using android::chre::IChreMessageHandlers;
using android::chre::SocketClient;
using android::frameworks::stats::V1_0::IStats;
using android::frameworks::stats::V1_0::PhysicalDropDetected;
// following convention of CHRE code.
namespace fbs = ::chre::fbs;
namespace android {
namespace hardware {
namespace google {
namespace pixel {
namespace { // anonymous namespace for file-local definitions
// This struct is defined in nanoapps/drop/messaging.h
// by the DropDetect nanoapp.
struct __attribute__((__packed__)) DropEventPayload {
float confidence;
float accel_magnitude_peak;
int32_t free_fall_duration_ns;
};
// This enum is defined in nanoapps/drop/messaging.h
// by the DropDetect nanoapp.
enum DropConstants {
kDropEnableRequest = 1,
kDropEnableNotification = 2,
kDropDisableRequest = 3,
kDropDisableNotification = 4,
kDropEventDetection = 5,
};
void requestNanoappList(SocketClient &client) {
flatbuffers::FlatBufferBuilder builder(64);
HostProtocolHost::encodeNanoappListRequest(builder);
if (!client.sendMessage(builder.GetBufferPointer(), builder.GetSize())) {
ALOGE("Failed to send NanoappList request");
}
}
} // namespace
DropDetect::DropDetect(const uint64_t drop_detect_app_id) : kDropDetectAppId(drop_detect_app_id) {}
sp<DropDetect> DropDetect::start(const uint64_t drop_detect_app_id, const char *const chre_socket) {
sp<DropDetect> dropDetect = new DropDetect(drop_detect_app_id);
if (!dropDetect->connectInBackground(chre_socket, dropDetect)) {
ALOGE("Couldn't connect to CHRE socket");
return nullptr;
}
return dropDetect;
}
void DropDetect::onConnected() {
requestNanoappList(*this);
}
/**
* Decode unix socket msgs to CHRE messages, and call the appropriate
* callback depending on the CHRE message.
*/
void DropDetect::onMessageReceived(const void *data, size_t length) {
if (!HostProtocolHost::decodeMessageFromChre(data, length, *this)) {
ALOGE("Failed to decode message");
}
}
/**
* Handle the response of a NanoappList request.
* Ensure that the Drop Detect nanoapp is running.
*/
void DropDetect::handleNanoappListResponse(const fbs::NanoappListResponseT &response) {
for (const std::unique_ptr<fbs::NanoappListEntryT> &nanoapp : response.nanoapps) {
if (nanoapp->app_id == kDropDetectAppId) {
if (!nanoapp->enabled)
ALOGE("Drop Detect app not enabled");
else
ALOGI("Drop Detect enabled");
return;
}
}
ALOGE("Drop Detect app not found");
}
/**
* listen for messages from the DropDetect nanoapp and report them to
* PixelStats.
*/
void DropDetect::handleNanoappMessage(const fbs::NanoappMessageT &message) {
struct DropEventPayload *message_struct;
if (message.app_id != kDropDetectAppId || message.message_type != kDropEventDetection ||
message.message.size() < sizeof(struct DropEventPayload))
return;
message_struct = (struct DropEventPayload *)&message.message[0];
ALOGI("Received drop detect message! Confidence %f Peak %f Duration %g",
message_struct->confidence, message_struct->accel_magnitude_peak,
message_struct->free_fall_duration_ns / 1e9);
uint8_t confidence = message_struct->confidence * 100;
confidence = std::min<int>(confidence, 100);
confidence = std::max<int>(0, confidence);
int32_t accel_magnitude_peak_1000ths_g = message_struct->accel_magnitude_peak * 1000.0;
int32_t free_fall_duration_ms = message_struct->free_fall_duration_ns / 1000000;
sp<IStats> stats_client = IStats::tryGetService();
if (stats_client) {
PhysicalDropDetected drop = {confidence, accel_magnitude_peak_1000ths_g,
free_fall_duration_ms};
Return<void> ret = stats_client->reportPhysicalDropDetected(drop);
if (!ret.isOk())
ALOGE("Unable to report physical drop to Stats service");
} else
ALOGE("Unable to connect to Stats service");
}
} // namespace pixel
} // namespace google
} // namespace hardware
} // namespace android
|
