oxmcandClaude Sonnet 5
8d5f56fd05
Pull in raspberry-vanilla's AOSP17 device tree changes for rpi4 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>
55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/*
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* Copyright (C) 2025 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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#include <cstdint>
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#include <optional>
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#include <ostream>
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namespace aidl::android::hardware::audio::core {
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/*
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* This parser captures these fields to determine properties such as
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* the MPEG version, layer, bitrate, sample rate, frame length and frame size.
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*
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* Reference - https://www.datavoyage.com/mpgscript/mpeghdr.htm
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* - https://mutagen-specs.readthedocs.io/en/latest/id3/id3v2.2.html
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*/
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struct MpegFrame {
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// The total length of the MPEG audio frame in bytes, including the header
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int frameLengthBytes = 0;
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// The number of audio samples in the frame
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int frameSize = 0;
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bool isID3v2 = false;
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bool isID3v1 = false;
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// Last few bytes of an ID3 tag or frame that couldn't be processed in a single chunk
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size_t bytesPending = 0;
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int sampleRate = 0;
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int bitRate = 0;
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};
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inline std::ostream& operator<<(std::ostream& os, const MpegFrame& frame) {
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os << "MpegFrame{len=" << frame.frameLengthBytes << ", size=" << frame.frameSize
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<< ", isID3v2=" << (frame.isID3v2 ? "true" : "false")
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<< ", isID3v1=" << (frame.isID3v1 ? "true" : "false") << ", pending=" << frame.bytesPending
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<< ", sampleRate=" << frame.sampleRate << "}";
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return os;
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}
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std::optional<MpegFrame> findMpegFrame(const uint8_t** currBuff, const uint8_t* endBuff);
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} // namespace aidl::android::hardware::audio::core
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