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/*
* Copyright (C) 2017 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 "audio_hw_primary"
#include <cinttypes>
#include <utils/Log.h>
#include <utils/Mutex.h>
#include <android/hardware/power/1.2/IPower.h>
#include "audio_perf.h"
using android::hardware::power::V1_2::IPower;
using android::hardware::power::V1_2::PowerHint;
using android::hardware::power::V1_2::toString;
using android::hardware::Return;
using android::hardware::Void;
using android::hardware::hidl_death_recipient;
using android::hidl::base::V1_0::IBase;
// Do not use gPowerHAL, use getPowerHal to retrieve a copy instead
static android::sp<IPower> gPowerHal_ = nullptr;
// Protect gPowerHal_
static std::mutex gPowerHalMutex;
// PowerHalDeathRecipient to invalid the client when service dies
struct PowerHalDeathRecipient : virtual public hidl_death_recipient {
// hidl_death_recipient interface
virtual void serviceDied(uint64_t, const android::wp<IBase>&) override {
std::lock_guard<std::mutex> lock(gPowerHalMutex);
ALOGE("PowerHAL just died");
gPowerHal_ = nullptr;
}
};
// Retrieve a copy of client
static android::sp<IPower> getPowerHal() {
std::lock_guard<std::mutex> lock(gPowerHalMutex);
static android::sp<PowerHalDeathRecipient> gPowerHalDeathRecipient = nullptr;
static bool gPowerHalExists = true;
if (gPowerHalExists && gPowerHal_ == nullptr) {
gPowerHal_ = IPower::getService();
if (gPowerHal_ == nullptr) {
ALOGE("Unable to get Power service");
gPowerHalExists = false;
} else {
if (gPowerHalDeathRecipient == nullptr) {
gPowerHalDeathRecipient = new PowerHalDeathRecipient();
}
Return<bool> linked = gPowerHal_->linkToDeath(
gPowerHalDeathRecipient, 0 /* cookie */);
if (!linked.isOk()) {
ALOGE("Transaction error in linking to PowerHAL death: %s",
linked.description().c_str());
gPowerHal_ = nullptr;
} else if (!linked) {
ALOGW("Unable to link to PowerHal death notifications");
gPowerHal_ = nullptr;
} else {
ALOGD("Connect to PowerHAL and link to death "
"notification successfully");
}
}
}
return gPowerHal_;
}
static bool powerHint(PowerHint hint, int32_t data) {
android::sp<IPower> powerHal = getPowerHal();
if (powerHal == nullptr) {
return false;
}
auto ret = powerHal->powerHintAsync_1_2(hint, data);
if (!ret.isOk()) {
ALOGE("powerHint failed, hint: %s, data: %" PRId32 ", error: %s",
toString(hint).c_str(),
data,
ret.description().c_str());
}
return ret.isOk();
}
int audio_streaming_hint_start() {
return powerHint(PowerHint::AUDIO_STREAMING, 1);
}
int audio_streaming_hint_end() {
return powerHint(PowerHint::AUDIO_STREAMING, 0);
}
int audio_low_latency_hint_start() {
return powerHint(PowerHint::AUDIO_LOW_LATENCY, 1);
}
int audio_low_latency_hint_end() {
return powerHint(PowerHint::AUDIO_LOW_LATENCY, 0);
}
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