mirror of
https://github.com/Evolution-X/hardware_interfaces
synced 2026-02-03 18:35:13 +00:00
c337a8799b
Extract code interacting with tinyALSA which is not specific to USB into "abstract" module and stream implementations ModuleAlsa and StreamAlsa. Also, move utility code which does not need module or stream context into Utils. This facilitates implementation of the CF core HAL which also uses tinyALSA, allowing to share common code. Bug: 264712385 Test: atest VtsHalAudioCoreTargetTest Change-Id: I2134b15e970c78e8a48b254e15199b8207a8ab34
101 lines
4.0 KiB
C++
101 lines
4.0 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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struct mixer* mixer = mixer_open(card);
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if (mixer == nullptr) {
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PLOG(ERROR) << __func__ << ": failed to open mixer for card=" << card;
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return;
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}
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auto alsaMixer = std::make_shared<alsa::Mixer>(mixer);
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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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