99 lines
3.9 KiB
C++
99 lines
3.9 KiB
C++
/*
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* Copyright (C) 2023 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 "AHAL_UsbAlsaMixerControl"
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#include <android-base/logging.h>
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#include <android/binder_status.h>
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#include "UsbAlsaMixerControl.h"
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namespace aidl::android::hardware::audio::core::usb {
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// static
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UsbAlsaMixerControl& UsbAlsaMixerControl::getInstance() {
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static UsbAlsaMixerControl gInstance;
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return gInstance;
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}
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void UsbAlsaMixerControl::setDeviceConnectionState(int card, bool masterMuted, float masterVolume,
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bool connected) {
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LOG(DEBUG) << __func__ << ": card=" << card << ", connected=" << connected;
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if (connected) {
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auto alsaMixer = std::make_shared<alsa::Mixer>(card);
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if (!alsaMixer->isValid()) {
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return;
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}
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alsaMixer->setMasterMute(masterMuted);
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alsaMixer->setMasterVolume(masterVolume);
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const std::lock_guard guard(mLock);
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mMixerControls.emplace(card, alsaMixer);
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} else {
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const std::lock_guard guard(mLock);
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mMixerControls.erase(card);
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}
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}
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ndk::ScopedAStatus UsbAlsaMixerControl::setMasterMute(bool mute) {
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auto alsaMixers = getAlsaMixers();
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for (auto it = alsaMixers.begin(); it != alsaMixers.end(); ++it) {
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if (auto result = it->second->setMasterMute(mute); !result.isOk()) {
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// Return illegal state if there are multiple devices connected and one of them fails
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// to set master mute. Otherwise, return the error from calling `setMasterMute`.
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LOG(ERROR) << __func__ << ": failed to set master mute for card=" << it->first;
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return alsaMixers.size() > 1 ? ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE)
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: std::move(result);
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}
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}
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus UsbAlsaMixerControl::setMasterVolume(float volume) {
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auto alsaMixers = getAlsaMixers();
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for (auto it = alsaMixers.begin(); it != alsaMixers.end(); ++it) {
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if (auto result = it->second->setMasterVolume(volume); !result.isOk()) {
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// Return illegal state if there are multiple devices connected and one of them fails
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// to set master volume. Otherwise, return the error from calling `setMasterVolume`.
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LOG(ERROR) << __func__ << ": failed to set master volume for card=" << it->first;
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return alsaMixers.size() > 1 ? ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE)
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: std::move(result);
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}
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}
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus UsbAlsaMixerControl::setVolumes(int card, const std::vector<float>& volumes) {
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auto alsaMixer = getAlsaMixer(card);
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if (alsaMixer == nullptr) {
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LOG(ERROR) << __func__ << ": no mixer control found for card=" << card;
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return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
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}
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return alsaMixer->setVolumes(volumes);
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}
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std::shared_ptr<alsa::Mixer> UsbAlsaMixerControl::getAlsaMixer(int card) {
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const std::lock_guard guard(mLock);
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const auto it = mMixerControls.find(card);
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return it == mMixerControls.end() ? nullptr : it->second;
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}
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std::map<int, std::shared_ptr<alsa::Mixer>> UsbAlsaMixerControl::getAlsaMixers() {
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const std::lock_guard guard(mLock);
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return mMixerControls;
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}
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} // namespace aidl::android::hardware::audio::core::usb
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