mirror of
https://github.com/Evolution-X/hardware_interfaces
synced 2026-02-04 03:34:12 +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
55 lines
1.8 KiB
C++
55 lines
1.8 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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#pragma once
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#include <map>
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#include <memory>
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#include <mutex>
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#include <vector>
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#include <android-base/thread_annotations.h>
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#include <android/binder_auto_utils.h>
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#include "alsa/Mixer.h"
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namespace aidl::android::hardware::audio::core::usb {
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class UsbAlsaMixerControl {
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public:
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static UsbAlsaMixerControl& getInstance();
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void setDeviceConnectionState(int card, bool masterMuted, float masterVolume, bool connected);
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// Master volume settings will be applied to all sound cards, it is only set by the
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// USB module.
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ndk::ScopedAStatus setMasterMute(bool muted);
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ndk::ScopedAStatus setMasterVolume(float volume);
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// The volume settings can be different on sound cards. It is controlled by streams.
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ndk::ScopedAStatus setVolumes(int card, const std::vector<float>& volumes);
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private:
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std::shared_ptr<alsa::Mixer> getAlsaMixer(int card);
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std::map<int, std::shared_ptr<alsa::Mixer>> getAlsaMixers();
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std::mutex mLock;
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// A map whose key is the card number and value is a shared pointer to corresponding
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// AlsaMixer object.
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std::map<int, std::shared_ptr<alsa::Mixer>> mMixerControls GUARDED_BY(mLock);
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};
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} // namespace aidl::android::hardware::audio::core::usb
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