Wei Wang | f7ca6c9 | 2017-11-21 14:51:20 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2017 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 "audio_hw_primary" |
| 18 | |
| 19 | #include <cinttypes> |
| 20 | |
| 21 | #include <utils/Log.h> |
| 22 | #include <utils/Mutex.h> |
| 23 | |
| 24 | #include <android/hardware/power/1.2/IPower.h> |
| 25 | |
| 26 | #include "audio_perf.h" |
| 27 | |
| 28 | using android::hardware::power::V1_2::IPower; |
| 29 | using android::hardware::power::V1_2::PowerHint; |
| 30 | using android::hardware::power::V1_2::toString; |
| 31 | using android::hardware::Return; |
| 32 | using android::hardware::Void; |
| 33 | using android::hardware::hidl_death_recipient; |
| 34 | using android::hidl::base::V1_0::IBase; |
| 35 | |
| 36 | // Do not use gPowerHAL, use getPowerHal to retrieve a copy instead |
| 37 | static android::sp<IPower> gPowerHal_ = nullptr; |
| 38 | // Protect gPowerHal_ |
| 39 | static std::mutex gPowerHalMutex; |
| 40 | |
| 41 | // PowerHalDeathRecipient to invalid the client when service dies |
| 42 | struct PowerHalDeathRecipient : virtual public hidl_death_recipient { |
| 43 | // hidl_death_recipient interface |
| 44 | virtual void serviceDied(uint64_t, const android::wp<IBase>&) override { |
| 45 | std::lock_guard<std::mutex> lock(gPowerHalMutex); |
| 46 | ALOGE("PowerHAL just died"); |
| 47 | gPowerHal_ = nullptr; |
| 48 | } |
| 49 | }; |
| 50 | |
| 51 | // Retrieve a copy of client |
| 52 | static android::sp<IPower> getPowerHal() { |
| 53 | std::lock_guard<std::mutex> lock(gPowerHalMutex); |
| 54 | static android::sp<PowerHalDeathRecipient> gPowerHalDeathRecipient = nullptr; |
| 55 | static bool gPowerHalExists = true; |
| 56 | |
| 57 | if (gPowerHalExists && gPowerHal_ == nullptr) { |
| 58 | gPowerHal_ = IPower::getService(); |
| 59 | |
| 60 | if (gPowerHal_ == nullptr) { |
| 61 | ALOGE("Unable to get Power service"); |
| 62 | gPowerHalExists = false; |
| 63 | } else { |
| 64 | if (gPowerHalDeathRecipient == nullptr) { |
| 65 | gPowerHalDeathRecipient = new PowerHalDeathRecipient(); |
| 66 | } |
| 67 | Return<bool> linked = gPowerHal_->linkToDeath( |
| 68 | gPowerHalDeathRecipient, 0 /* cookie */); |
| 69 | if (!linked.isOk()) { |
| 70 | ALOGE("Transaction error in linking to PowerHAL death: %s", |
| 71 | linked.description().c_str()); |
| 72 | gPowerHal_ = nullptr; |
| 73 | } else if (!linked) { |
| 74 | ALOGW("Unable to link to PowerHal death notifications"); |
| 75 | gPowerHal_ = nullptr; |
| 76 | } else { |
| 77 | ALOGD("Connect to PowerHAL and link to death " |
| 78 | "notification successfully"); |
| 79 | } |
| 80 | } |
| 81 | } |
| 82 | return gPowerHal_; |
| 83 | } |
| 84 | |
| 85 | static bool powerHint(PowerHint hint, int32_t data) { |
| 86 | android::sp<IPower> powerHal = getPowerHal(); |
| 87 | if (powerHal == nullptr) { |
| 88 | return false; |
| 89 | } |
| 90 | |
| 91 | auto ret = powerHal->powerHintAsync_1_2(hint, data); |
| 92 | |
| 93 | if (!ret.isOk()) { |
| 94 | ALOGE("powerHint failed, hint: %s, data: %" PRId32 ", error: %s", |
| 95 | toString(hint).c_str(), |
| 96 | data, |
| 97 | ret.description().c_str()); |
| 98 | } |
| 99 | return ret.isOk(); |
| 100 | } |
| 101 | |
| 102 | int audio_streaming_hint_start() { |
| 103 | return powerHint(PowerHint::AUDIO_STREAMING, 1); |
| 104 | } |
| 105 | |
| 106 | int audio_streaming_hint_end() { |
| 107 | return powerHint(PowerHint::AUDIO_STREAMING, 0); |
| 108 | } |
| 109 | |
| 110 | int audio_low_latency_hint_start() { |
| 111 | return powerHint(PowerHint::AUDIO_LOW_LATENCY, 1); |
| 112 | } |
| 113 | |
| 114 | int audio_low_latency_hint_end() { |
| 115 | return powerHint(PowerHint::AUDIO_LOW_LATENCY, 0); |
| 116 | } |