Files
pawlet_rpi5/audio/alsa/StreamAlsa.cpp
oxmc 411aca7362 Sync to upstream android-17.0 (AOSP17)
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>
2026-07-04 00:33:09 -07:00

84 lines
3.0 KiB
C++

/*
* Copyright (C) 2023 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <limits>
#define LOG_TAG "AHAL_StreamAlsa"
#include <Log.h>
#include "UtilsAlsa.h"
#include "core-impl/StreamAlsa.h"
namespace aidl::android::hardware::audio::core {
StreamAlsa::StreamAlsa(StreamContext* context, const Metadata& metadata, int readWriteRetries)
: StreamAlsaBase(context, metadata, readWriteRetries) {}
StreamAlsa::~StreamAlsa() {
cleanupWorker();
}
::android::status_t StreamAlsa::standby() {
mAlsaDeviceProxies.clear();
return ::android::OK;
}
::android::status_t StreamAlsa::start() {
if (!mAlsaDeviceProxies.empty()) {
// This is a resume after a pause.
return ::android::OK;
}
return openDeviceProxies(&mAlsaDeviceProxies);
}
::android::status_t StreamAlsa::transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
int32_t* latencyMs) {
if (mAlsaDeviceProxies.empty()) {
LOG(FATAL) << __func__ << ": no opened devices";
return ::android::NO_INIT;
}
const size_t bytesToTransfer = frameCount * mFrameSizeBytes;
unsigned maxLatency = 0;
if (mIsInput) {
if (int ret = proxy_read_with_retries(mAlsaDeviceProxies[0].get(), buffer, bytesToTransfer,
mReadWriteRetries);
ret != 0) {
LOG(WARNING) << __func__ << ": read failed: " << ret;
return ::android::INVALID_OPERATION;
}
maxLatency = proxy_get_latency(mAlsaDeviceProxies[0].get());
} else {
alsa::applyGain(buffer, mGain, bytesToTransfer, mConfig.value().format, mConfig->channels);
for (size_t i = 0; i < mAlsaDeviceProxies.size(); ++i) {
if (int ret = proxy_write_with_retries(mAlsaDeviceProxies[i].get(), buffer,
bytesToTransfer, mReadWriteRetries);
ret != 0) {
LOG(WARNING) << __func__ << ": write failed for device " << i << ": " << ret;
}
maxLatency = std::max(maxLatency, proxy_get_latency(mAlsaDeviceProxies[i].get()));
}
}
*actualFrameCount = frameCount;
maxLatency = std::min(maxLatency, static_cast<unsigned>(std::numeric_limits<int32_t>::max()));
*latencyMs = maxLatency;
return ::android::OK;
}
void StreamAlsa::shutdown() {
mAlsaDeviceProxies.clear();
}
} // namespace aidl::android::hardware::audio::core