117 lines
3.7 KiB
C++
117 lines
3.7 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "audio_hw_primary"
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#include <cinttypes>
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#include <utils/Log.h>
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#include <utils/Mutex.h>
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#include <android/hardware/power/1.2/IPower.h>
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#include "audio_perf.h"
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using android::hardware::power::V1_2::IPower;
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using android::hardware::power::V1_2::PowerHint;
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using android::hardware::power::V1_2::toString;
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using android::hardware::Return;
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using android::hardware::Void;
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using android::hardware::hidl_death_recipient;
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using android::hidl::base::V1_0::IBase;
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// Do not use gPowerHAL, use getPowerHal to retrieve a copy instead
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static android::sp<IPower> gPowerHal_ = nullptr;
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// Protect gPowerHal_
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static std::mutex gPowerHalMutex;
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// PowerHalDeathRecipient to invalid the client when service dies
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struct PowerHalDeathRecipient : virtual public hidl_death_recipient {
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// hidl_death_recipient interface
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virtual void serviceDied(uint64_t, const android::wp<IBase>&) override {
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std::lock_guard<std::mutex> lock(gPowerHalMutex);
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ALOGE("PowerHAL just died");
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gPowerHal_ = nullptr;
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}
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};
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// Retrieve a copy of client
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static android::sp<IPower> getPowerHal() {
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std::lock_guard<std::mutex> lock(gPowerHalMutex);
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static android::sp<PowerHalDeathRecipient> gPowerHalDeathRecipient = nullptr;
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static bool gPowerHalExists = true;
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if (gPowerHalExists && gPowerHal_ == nullptr) {
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gPowerHal_ = IPower::getService();
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if (gPowerHal_ == nullptr) {
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ALOGE("Unable to get Power service");
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gPowerHalExists = false;
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} else {
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if (gPowerHalDeathRecipient == nullptr) {
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gPowerHalDeathRecipient = new PowerHalDeathRecipient();
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}
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Return<bool> linked = gPowerHal_->linkToDeath(
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gPowerHalDeathRecipient, 0 /* cookie */);
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if (!linked.isOk()) {
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ALOGE("Transaction error in linking to PowerHAL death: %s",
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linked.description().c_str());
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gPowerHal_ = nullptr;
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} else if (!linked) {
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ALOGW("Unable to link to PowerHal death notifications");
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gPowerHal_ = nullptr;
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} else {
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ALOGD("Connect to PowerHAL and link to death "
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"notification successfully");
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}
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}
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}
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return gPowerHal_;
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}
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static bool powerHint(PowerHint hint, int32_t data) {
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android::sp<IPower> powerHal = getPowerHal();
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if (powerHal == nullptr) {
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return false;
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}
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auto ret = powerHal->powerHintAsync_1_2(hint, data);
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if (!ret.isOk()) {
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ALOGE("powerHint failed, hint: %s, data: %" PRId32 ", error: %s",
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toString(hint).c_str(),
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data,
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ret.description().c_str());
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}
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return ret.isOk();
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}
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int audio_streaming_hint_start() {
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return powerHint(PowerHint::AUDIO_STREAMING, 1);
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}
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int audio_streaming_hint_end() {
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return powerHint(PowerHint::AUDIO_STREAMING, 0);
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}
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int audio_low_latency_hint_start() {
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return powerHint(PowerHint::AUDIO_LOW_LATENCY, 1);
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}
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int audio_low_latency_hint_end() {
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return powerHint(PowerHint::AUDIO_LOW_LATENCY, 0);
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}
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