oxmc
411aca7362
Pull in raspberry-vanilla's AOSP17 device tree changes for rpi5 while keeping all PawletOS customizations (A/B partition layout, sepolicy, zram, TWRP recovery scaffolding, ALSA HDMI pre-warm, product/overlay structure) intact on top. Upstream changes absorbed: - AOSP17 audio HAL refactor (StreamAlsa split into StreamAlsaBase/ StreamAlsaMonoPipe, Utils.cpp -> UtilsAlsa.cpp, new Bluetooth/stub helper classes, libeffects AIDL rebuild via *_ndk_shared defaults) - API level 36 -> 37, FCM matrix level 202504 -> 202604 - QuickSettings tile default split (SystemUIRpiOverlay, ported into pawlet_rpi_common where this overlay now lives) - vendor_tracing_descriptors added to enforce-product-packages-exist - misc AOSP17 logging header switch (android-base/logging.h -> Log.h) Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
74 lines
2.9 KiB
C++
74 lines
2.9 KiB
C++
/*
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* Copyright (C) 2026 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 <atomic>
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#include <optional>
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#include <vector>
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#include "Stream.h"
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#include "alsa/UtilsAlsa.h"
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namespace aidl::android::hardware::audio::core {
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// Base class for implementations that use TinyAlsa.
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// Contains code common to both the direct ALSA path (StreamAlsa) and the
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// MonoPipe + I/O thread path (StreamAlsaMonoPipe).
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// This class does not define a complete stream implementation and should never
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// be used on its own. Derived classes must provide implementations for
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// standby(), start(), transfer(), and shutdown().
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class StreamAlsaBase : public StreamCommonImpl {
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public:
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StreamAlsaBase(StreamContext* context, const Metadata& metadata, int readWriteRetries);
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~StreamAlsaBase();
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// Methods of 'DriverInterface'.
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::android::status_t init(DriverCallbackInterface* callback) override;
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::android::status_t drain(StreamDescriptor::DrainMode) override;
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::android::status_t flush() override;
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::android::status_t pause() override;
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::android::status_t standby() override = 0;
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::android::status_t start() override = 0;
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::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
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int32_t* latencyMs) override = 0;
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::android::status_t refinePosition(StreamDescriptor::Position* position) override;
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void shutdown() override = 0;
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ndk::ScopedAStatus setGain(float gain) override;
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protected:
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// Called from 'start' to initialize 'mAlsaDeviceProxies', the vector must be non-empty.
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virtual std::vector<alsa::DeviceProfile> getDeviceProfiles() = 0;
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// Helper used by subclass start() implementations to open ALSA device proxies.
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// Returns ::android::NO_INIT if no proxies could be opened, ::android::OK otherwise.
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::android::status_t openDeviceProxies(std::vector<alsa::DeviceProxy>* proxies);
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const size_t mBufferSizeFrames;
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const size_t mFrameSizeBytes;
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const int mSampleRate;
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const bool mIsInput;
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const std::optional<struct pcm_config> mConfig;
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const int mReadWriteRetries;
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std::atomic<float> mGain = 1.0;
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// Opened ALSA device proxies. Populated by start(), cleared by standby()/shutdown().
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std::vector<alsa::DeviceProxy> mAlsaDeviceProxies;
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};
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} // namespace aidl::android::hardware::audio::core
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