oxmc
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>
68 lines
2.7 KiB
C++
68 lines
2.7 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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#define LOG_TAG "AHAL_OffloadStream"
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#include <Log.h>
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#include "ApeHeader.h"
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namespace aidl::android::hardware::audio::core {
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static constexpr uint32_t kApeSignature1 = 0x2043414d; // 'MAC ';
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static constexpr uint32_t kApeSignature2 = 0x4643414d; // 'MACF';
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static constexpr uint16_t kMinimumVersion = 3980;
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void* findApeHeader(void* buffer, size_t bufferSizeBytes, ApeHeader** header) {
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auto advanceBy = [&](size_t bytes) -> void* {
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buffer = static_cast<uint8_t*>(buffer) + bytes;
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bufferSizeBytes -= bytes;
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return buffer;
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};
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while (bufferSizeBytes >= sizeof(ApeDescriptor) + sizeof(ApeHeader)) {
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ApeDescriptor* descPtr = static_cast<ApeDescriptor*>(buffer);
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if (descPtr->signature != kApeSignature1 && descPtr->signature != kApeSignature2) {
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advanceBy(sizeof(descPtr->signature));
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continue;
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}
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if (descPtr->version < kMinimumVersion) {
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LOG(ERROR) << __func__ << ": Unsupported APE version: " << descPtr->version
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<< ", minimum supported version: " << kMinimumVersion;
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// Older versions only have a header, which is of the size similar to the modern header.
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advanceBy(sizeof(ApeHeader));
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continue;
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}
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if (descPtr->descriptorSizeBytes > bufferSizeBytes) {
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LOG(ERROR) << __func__
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<< ": Invalid APE descriptor size: " << descPtr->descriptorSizeBytes
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<< ", overruns remaining buffer size: " << bufferSizeBytes;
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advanceBy(sizeof(ApeDescriptor));
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continue;
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}
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advanceBy(descPtr->descriptorSizeBytes);
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if (sizeof(ApeHeader) > bufferSizeBytes) {
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LOG(ERROR) << __func__ << ": APE header is incomplete, want: " << sizeof(ApeHeader)
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<< " bytes, have: " << bufferSizeBytes;
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return nullptr;
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}
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*header = static_cast<ApeHeader*>(buffer);
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return advanceBy(sizeof(ApeHeader));
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}
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return nullptr;
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}
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} // namespace aidl::android::hardware::audio::core
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