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
29 namespace android
30 {
31
32 static hw_module_t *gVibraModule = NULL;
33 static vibrator_device_t *gVibraDevice = NULL;
34
vibratorInit(JNIEnv,jobject)35 static 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
vibratorExists(JNIEnv *,jobject)52 static jboolean vibratorExists(JNIEnv* /* env */, jobject /* clazz */)
53 {
54 if (gVibraModule && gVibraDevice) {
55 return JNI_TRUE;
56 } else {
57 return JNI_FALSE;
58 }
59 }
60
vibratorOn(JNIEnv *,jobject,jlong timeout_ms)61 static 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
vibratorOff(JNIEnv *,jobject)73 static 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
85 static 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
register_android_server_VibratorService(JNIEnv * env)92 int 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