| /* |
| * Copyright (C) 2009 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. |
| */ |
| |
| #define LOG_TAG "VibratorService" |
| |
| #include <android/hardware/vibrator/1.0/IVibrator.h> |
| #include <android/hardware/vibrator/1.0/types.h> |
| #include <android/hardware/vibrator/1.0/IVibrator.h> |
| #include <android/hardware/vibrator/1.1/types.h> |
| #include <android/hardware/vibrator/1.2/IVibrator.h> |
| #include <android/hardware/vibrator/1.2/types.h> |
| #include <android/hardware/vibrator/1.3/IVibrator.h> |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include "android_runtime/AndroidRuntime.h" |
| |
| #include <utils/misc.h> |
| #include <utils/Log.h> |
| #include <hardware/vibrator.h> |
| |
| #include <inttypes.h> |
| #include <stdio.h> |
| |
| using android::hardware::Return; |
| using android::hardware::vibrator::V1_0::EffectStrength; |
| using android::hardware::vibrator::V1_0::Status; |
| using android::hardware::vibrator::V1_1::Effect_1_1; |
| |
| namespace V1_0 = android::hardware::vibrator::V1_0; |
| namespace V1_1 = android::hardware::vibrator::V1_1; |
| namespace V1_2 = android::hardware::vibrator::V1_2; |
| namespace V1_3 = android::hardware::vibrator::V1_3; |
| |
| namespace android { |
| |
| static constexpr int NUM_TRIES = 2; |
| |
| // Creates a Return<R> with STATUS::EX_NULL_POINTER. |
| template<class R> |
| inline Return<R> NullptrStatus() { |
| using ::android::hardware::Status; |
| return Return<R>{Status::fromExceptionCode(Status::EX_NULL_POINTER)}; |
| } |
| |
| // Helper used to transparently deal with the vibrator HAL becoming unavailable. |
| template<class R, class I, class... Args0, class... Args1> |
| Return<R> halCall(Return<R> (I::* fn)(Args0...), Args1&&... args1) { |
| // Assume that if getService returns a nullptr, HAL is not available on the |
| // device. |
| static sp<I> sHal = I::getService(); |
| static bool sAvailable = sHal != nullptr; |
| |
| if (!sAvailable) { |
| return NullptrStatus<R>(); |
| } |
| |
| // Return<R> doesn't have a default constructor, so make a Return<R> with |
| // STATUS::EX_NONE. |
| using ::android::hardware::Status; |
| Return<R> ret{Status::fromExceptionCode(Status::EX_NONE)}; |
| |
| // Note that ret is guaranteed to be changed after this loop. |
| for (int i = 0; i < NUM_TRIES; ++i) { |
| ret = (sHal == nullptr) ? NullptrStatus<R>() |
| : (*sHal.*fn)(std::forward<Args1>(args1)...); |
| |
| if (ret.isOk()) { |
| break; |
| } |
| |
| ALOGE("Failed to issue command to vibrator HAL. Retrying."); |
| // Restoring connection to the HAL. |
| sHal = I::tryGetService(); |
| } |
| return ret; |
| } |
| |
| template<class R> |
| bool isValidEffect(jlong effect) { |
| if (effect < 0) { |
| return false; |
| } |
| R val = static_cast<R>(effect); |
| auto iter = hardware::hidl_enum_range<R>(); |
| return val >= *iter.begin() && val <= *std::prev(iter.end()); |
| } |
| |
| static void vibratorInit(JNIEnv /* env */, jobject /* clazz */) |
| { |
| halCall(&V1_0::IVibrator::ping).isOk(); |
| } |
| |
| static jboolean vibratorExists(JNIEnv* /* env */, jobject /* clazz */) |
| { |
| return halCall(&V1_0::IVibrator::ping).isOk() ? JNI_TRUE : JNI_FALSE; |
| } |
| |
| static void vibratorOn(JNIEnv* /* env */, jobject /* clazz */, jlong timeout_ms) |
| { |
| Status retStatus = halCall(&V1_0::IVibrator::on, timeout_ms).withDefault(Status::UNKNOWN_ERROR); |
| if (retStatus != Status::OK) { |
| ALOGE("vibratorOn command failed (%" PRIu32 ").", static_cast<uint32_t>(retStatus)); |
| } |
| } |
| |
| static void vibratorOff(JNIEnv* /* env */, jobject /* clazz */) |
| { |
| Status retStatus = halCall(&V1_0::IVibrator::off).withDefault(Status::UNKNOWN_ERROR); |
| if (retStatus != Status::OK) { |
| ALOGE("vibratorOff command failed (%" PRIu32 ").", static_cast<uint32_t>(retStatus)); |
| } |
| } |
| |
| static jlong vibratorSupportsAmplitudeControl(JNIEnv*, jobject) { |
| return halCall(&V1_0::IVibrator::supportsAmplitudeControl).withDefault(false); |
| } |
| |
| static void vibratorSetAmplitude(JNIEnv*, jobject, jint amplitude) { |
| Status status = halCall(&V1_0::IVibrator::setAmplitude, static_cast<uint32_t>(amplitude)) |
| .withDefault(Status::UNKNOWN_ERROR); |
| if (status != Status::OK) { |
| ALOGE("Failed to set vibrator amplitude (%" PRIu32 ").", |
| static_cast<uint32_t>(status)); |
| } |
| } |
| |
| static jboolean vibratorSupportsExternalControl(JNIEnv*, jobject) { |
| return halCall(&V1_3::IVibrator::supportsExternalControl).withDefault(false); |
| } |
| |
| static void vibratorSetExternalControl(JNIEnv*, jobject, jboolean enabled) { |
| Status status = halCall(&V1_3::IVibrator::setExternalControl, static_cast<uint32_t>(enabled)) |
| .withDefault(Status::UNKNOWN_ERROR); |
| if (status != Status::OK) { |
| ALOGE("Failed to set vibrator external control (%" PRIu32 ").", |
| static_cast<uint32_t>(status)); |
| } |
| } |
| |
| static jlong vibratorPerformEffect(JNIEnv*, jobject, jlong effect, jint strength) { |
| Status status; |
| uint32_t lengthMs; |
| auto callback = [&status, &lengthMs](Status retStatus, uint32_t retLengthMs) { |
| status = retStatus; |
| lengthMs = retLengthMs; |
| }; |
| EffectStrength effectStrength(static_cast<EffectStrength>(strength)); |
| |
| Return<void> ret; |
| if (isValidEffect<V1_0::Effect>(effect)) { |
| ret = halCall(&V1_0::IVibrator::perform, static_cast<V1_0::Effect>(effect), |
| effectStrength, callback); |
| } else if (isValidEffect<Effect_1_1>(effect)) { |
| ret = halCall(&V1_1::IVibrator::perform_1_1, static_cast<Effect_1_1>(effect), |
| effectStrength, callback); |
| } else if (isValidEffect<V1_2::Effect>(effect)) { |
| ret = halCall(&V1_2::IVibrator::perform_1_2, static_cast<V1_2::Effect>(effect), |
| effectStrength, callback); |
| } else if (isValidEffect<V1_3::Effect>(effect)) { |
| ret = halCall(&V1_3::IVibrator::perform_1_3, static_cast<V1_3::Effect>(effect), |
| effectStrength, callback); |
| } else { |
| ALOGW("Unable to perform haptic effect, invalid effect ID (%" PRId32 ")", |
| static_cast<int32_t>(effect)); |
| return -1; |
| } |
| |
| if (!ret.isOk()) { |
| ALOGW("Failed to perform effect (%" PRId32 ")", static_cast<int32_t>(effect)); |
| return -1; |
| } |
| |
| if (status == Status::OK) { |
| return lengthMs; |
| } else if (status != Status::UNSUPPORTED_OPERATION) { |
| // Don't warn on UNSUPPORTED_OPERATION, that's a normal event and just means the motor |
| // doesn't have a pre-defined waveform to perform for it, so we should just give the |
| // opportunity to fall back to the framework waveforms. |
| ALOGE("Failed to perform haptic effect: effect=%" PRId64 ", strength=%" PRId32 |
| ", error=%" PRIu32 ").", static_cast<int64_t>(effect), |
| static_cast<int32_t>(strength), static_cast<uint32_t>(status)); |
| } |
| |
| return -1; |
| } |
| |
| static const JNINativeMethod method_table[] = { |
| { "vibratorExists", "()Z", (void*)vibratorExists }, |
| { "vibratorInit", "()V", (void*)vibratorInit }, |
| { "vibratorOn", "(J)V", (void*)vibratorOn }, |
| { "vibratorOff", "()V", (void*)vibratorOff }, |
| { "vibratorSupportsAmplitudeControl", "()Z", (void*)vibratorSupportsAmplitudeControl}, |
| { "vibratorSetAmplitude", "(I)V", (void*)vibratorSetAmplitude}, |
| { "vibratorPerformEffect", "(JJ)J", (void*)vibratorPerformEffect}, |
| { "vibratorSupportsExternalControl", "()Z", (void*)vibratorSupportsExternalControl}, |
| { "vibratorSetExternalControl", "(Z)V", (void*)vibratorSetExternalControl}, |
| }; |
| |
| int register_android_server_VibratorService(JNIEnv *env) |
| { |
| return jniRegisterNativeMethods(env, "com/android/server/VibratorService", |
| method_table, NELEM(method_table)); |
| } |
| |
| }; |