chre_app.c revision b78969e7bce5b6d57a3e6b99315f44fe77b5d2b6 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <eventnums.h>
18#include <seos.h>
19#include <timer.h>
20#include <toolchain.h>
21#include <crt_priv.h>
22
23#include <chre.h>
24
25/*
26 * Common CHRE App support code
27 */
28
29static bool chreappStart(uint32_t tid)
30{
31    __crt_init();
32    return nanoappStart();
33}
34
35static void chreappEnd(void)
36{
37    nanoappEnd();
38    __crt_exit();
39}
40
41static void chreappHandle(uint32_t eventTypeAndTid, const void *eventData)
42{
43    uint16_t evt = eventTypeAndTid;
44    uint16_t srcTid = eventTypeAndTid >> 16;
45    const void *data = eventData;
46
47    union EventLocalData {
48    struct chreMessageFromHostData msg;
49    } u;
50
51    switch(evt) {
52    case EVT_APP_TIMER:
53        evt = CHRE_EVENT_TIMER;
54        data = ((struct TimerEvent *)eventData)->data;
55        break;
56    case EVT_APP_FROM_HOST:
57        evt = CHRE_EVENT_MESSAGE_FROM_HOST;
58        data = &u.msg;
59        u.msg.message = (uint8_t*)eventData + 1;
60        u.msg.reservedMessageType = 0;
61        u.msg.messageSize = *(uint8_t*)eventData;
62        break;
63    case EVT_APP_FROM_HOST_CHRE:
64    {
65        const struct NanohubMsgChreHdr *hdr = eventData;
66        evt = CHRE_EVENT_MESSAGE_FROM_HOST;
67        data = &u.msg;
68        u.msg.message = hdr + 1;
69        u.msg.reservedMessageType = hdr->appEvent;
70        u.msg.messageSize = hdr->size;
71        break;
72    }
73    }
74    nanoappHandleEvent(srcTid, evt, data);
75}
76
77// Collect entry points
78const struct AppFuncs SET_EXTERNAL_APP_ATTRIBUTES(used, section (".app_init"),visibility("default")) _mAppFuncs = {
79    .init   = chreappStart,
80    .end    = chreappEnd,
81    .handle = chreappHandle,
82};
83
84// declare version for compatibility with current runtime
85const uint32_t SET_EXTERNAL_APP_VERSION(used, section (".app_version"), visibility("default")) _mAppVer = 0;
86