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      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 <android/hardware/vibrator/1.0/IVibrator.h>
     20 #include <android/hardware/vibrator/1.0/types.h>
     21 
     22 #include "jni.h"
     23 #include "JNIHelp.h"
     24 #include "android_runtime/AndroidRuntime.h"
     25 
     26 #include <utils/misc.h>
     27 #include <utils/Log.h>
     28 #include <hardware/vibrator.h>
     29 
     30 #include <inttypes.h>
     31 #include <stdio.h>
     32 
     33 using android::hardware::Return;
     34 using android::hardware::vibrator::V1_0::Effect;
     35 using android::hardware::vibrator::V1_0::EffectStrength;
     36 using android::hardware::vibrator::V1_0::IVibrator;
     37 using android::hardware::vibrator::V1_0::Status;
     38 
     39 namespace android
     40 {
     41 
     42 static sp<IVibrator> mHal;
     43 
     44 static void vibratorInit(JNIEnv /* env */, jobject /* clazz */)
     45 {
     46     /* TODO(b/31632518) */
     47     if (mHal != nullptr) {
     48         return;
     49     }
     50     mHal = IVibrator::getService();
     51 }
     52 
     53 static jboolean vibratorExists(JNIEnv* /* env */, jobject /* clazz */)
     54 {
     55     if (mHal != nullptr) {
     56         return JNI_TRUE;
     57     } else {
     58         return JNI_FALSE;
     59     }
     60 }
     61 
     62 static void vibratorOn(JNIEnv* /* env */, jobject /* clazz */, jlong timeout_ms)
     63 {
     64     if (mHal != nullptr) {
     65         Status retStatus = mHal->on(timeout_ms);
     66         if (retStatus != Status::OK) {
     67             ALOGE("vibratorOn command failed (%" PRIu32 ").", static_cast<uint32_t>(retStatus));
     68         }
     69     } else {
     70         ALOGW("Tried to vibrate but there is no vibrator device.");
     71     }
     72 }
     73 
     74 static void vibratorOff(JNIEnv* /* env */, jobject /* clazz */)
     75 {
     76     if (mHal != nullptr) {
     77         Status retStatus = mHal->off();
     78         if (retStatus != Status::OK) {
     79             ALOGE("vibratorOff command failed (%" PRIu32 ").", static_cast<uint32_t>(retStatus));
     80         }
     81     } else {
     82         ALOGW("Tried to stop vibrating but there is no vibrator device.");
     83     }
     84 }
     85 
     86 static jlong vibratorSupportsAmplitudeControl(JNIEnv*, jobject) {
     87     if (mHal != nullptr) {
     88         return mHal->supportsAmplitudeControl();
     89     } else {
     90         ALOGW("Unable to get max vibration amplitude, there is no vibrator device.");
     91     }
     92     return false;
     93 }
     94 
     95 static void vibratorSetAmplitude(JNIEnv*, jobject, jint amplitude) {
     96     if (mHal != nullptr) {
     97         Status status = mHal->setAmplitude(static_cast<uint32_t>(amplitude));
     98         if (status != Status::OK) {
     99             ALOGE("Failed to set vibrator amplitude (%" PRIu32 ").",
    100                     static_cast<uint32_t>(status));
    101         }
    102     } else {
    103         ALOGW("Unable to set vibration amplitude, there is no vibrator device.");
    104     }
    105 }
    106 
    107 static jlong vibratorPerformEffect(JNIEnv*, jobject, jlong effect, jint strength) {
    108     if (mHal != nullptr) {
    109         Status status;
    110         uint32_t lengthMs;
    111         mHal->perform(static_cast<Effect>(effect), static_cast<EffectStrength>(strength),
    112                 [&status, &lengthMs](Status retStatus, uint32_t retLengthMs) {
    113                     status = retStatus;
    114                     lengthMs = retLengthMs;
    115                 });
    116         if (status == Status::OK) {
    117             return lengthMs;
    118         } else if (status != Status::UNSUPPORTED_OPERATION) {
    119             // Don't warn on UNSUPPORTED_OPERATION, that's a normal even and just means the motor
    120             // doesn't have a pre-defined waveform to perform for it, so we should just fall back
    121             // to the framework waveforms.
    122             ALOGE("Failed to perform haptic effect: effect=%" PRId64 ", strength=%" PRId32
    123                     ", error=%" PRIu32 ").", static_cast<int64_t>(effect),
    124                     static_cast<int32_t>(strength), static_cast<uint32_t>(status));
    125         }
    126     } else {
    127         ALOGW("Unable to perform haptic effect, there is no vibrator device.");
    128     }
    129     return -1;
    130 }
    131 
    132 static const JNINativeMethod method_table[] = {
    133     { "vibratorExists", "()Z", (void*)vibratorExists },
    134     { "vibratorInit", "()V", (void*)vibratorInit },
    135     { "vibratorOn", "(J)V", (void*)vibratorOn },
    136     { "vibratorOff", "()V", (void*)vibratorOff },
    137     { "vibratorSupportsAmplitudeControl", "()Z", (void*)vibratorSupportsAmplitudeControl},
    138     { "vibratorSetAmplitude", "(I)V", (void*)vibratorSetAmplitude},
    139     { "vibratorPerformEffect", "(JJ)J", (void*)vibratorPerformEffect}
    140 };
    141 
    142 int register_android_server_VibratorService(JNIEnv *env)
    143 {
    144     return jniRegisterNativeMethods(env, "com/android/server/VibratorService",
    145             method_table, NELEM(method_table));
    146 }
    147 
    148 };
    149