1/*
2 * Copyright (C) 2009 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#define LOG_TAG "VibratorService"
18
19#include "jni.h"
20#include "JNIHelp.h"
21#include "android_runtime/AndroidRuntime.h"
22
23#include <utils/misc.h>
24#include <utils/Log.h>
25#include <hardware/vibrator.h>
26
27#include <stdio.h>
28
29namespace android
30{
31
32static hw_module_t *gVibraModule = NULL;
33static vibrator_device_t *gVibraDevice = NULL;
34
35static void vibratorInit(JNIEnv /* env */, jobject /* clazz */)
36{
37    if (gVibraModule != NULL) {
38        return;
39    }
40
41    int err = hw_get_module(VIBRATOR_HARDWARE_MODULE_ID, (hw_module_t const**)&gVibraModule);
42
43    if (err) {
44        ALOGE("Couldn't load %s module (%s)", VIBRATOR_HARDWARE_MODULE_ID, strerror(-err));
45    } else {
46        if (gVibraModule) {
47            vibrator_open(gVibraModule, &gVibraDevice);
48        }
49    }
50}
51
52static jboolean vibratorExists(JNIEnv* /* env */, jobject /* clazz */)
53{
54    if (gVibraModule && gVibraDevice) {
55        return JNI_TRUE;
56    } else {
57        return JNI_FALSE;
58    }
59}
60
61static void vibratorOn(JNIEnv* /* env */, jobject /* clazz */, jlong timeout_ms)
62{
63    if (gVibraDevice) {
64        int err = gVibraDevice->vibrator_on(gVibraDevice, timeout_ms);
65        if (err != 0) {
66            ALOGE("The hw module failed in vibrator_on: %s", strerror(-err));
67        }
68    } else {
69        ALOGW("Tried to vibrate but there is no vibrator device.");
70    }
71}
72
73static void vibratorOff(JNIEnv* /* env */, jobject /* clazz */)
74{
75    if (gVibraDevice) {
76        int err = gVibraDevice->vibrator_off(gVibraDevice);
77        if (err != 0) {
78            ALOGE("The hw module failed in vibrator_off(): %s", strerror(-err));
79        }
80    } else {
81        ALOGW("Tried to stop vibrating but there is no vibrator device.");
82    }
83}
84
85static const JNINativeMethod method_table[] = {
86    { "vibratorExists", "()Z", (void*)vibratorExists },
87    { "vibratorInit", "()V", (void*)vibratorInit },
88    { "vibratorOn", "(J)V", (void*)vibratorOn },
89    { "vibratorOff", "()V", (void*)vibratorOff }
90};
91
92int register_android_server_VibratorService(JNIEnv *env)
93{
94    return jniRegisterNativeMethods(env, "com/android/server/VibratorService",
95            method_table, NELEM(method_table));
96}
97
98};
99