audio: import aidl hal
* hardware/interfaces/audio/aidl/default/ at android-16.0.0_r1.
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Konsta
132
audio/ModulePrimary.cpp
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132
audio/ModulePrimary.cpp
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/*
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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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#include <vector>
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#define LOG_TAG "AHAL_ModulePrimary"
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#include <Utils.h>
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#include <android-base/logging.h>
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#include "core-impl/ModulePrimary.h"
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#include "core-impl/StreamMmapStub.h"
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#include "core-impl/StreamOffloadStub.h"
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#include "core-impl/StreamPrimary.h"
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#include "core-impl/Telephony.h"
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using aidl::android::hardware::audio::common::areAllBitPositionFlagsSet;
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using aidl::android::hardware::audio::common::hasMmapFlag;
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using aidl::android::hardware::audio::common::SinkMetadata;
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using aidl::android::hardware::audio::common::SourceMetadata;
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using aidl::android::hardware::audio::core::StreamDescriptor;
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using aidl::android::media::audio::common::AudioInputFlags;
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using aidl::android::media::audio::common::AudioIoFlags;
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using aidl::android::media::audio::common::AudioOffloadInfo;
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using aidl::android::media::audio::common::AudioOutputFlags;
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using aidl::android::media::audio::common::AudioPort;
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using aidl::android::media::audio::common::AudioPortConfig;
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using aidl::android::media::audio::common::AudioPortExt;
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using aidl::android::media::audio::common::MicrophoneInfo;
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namespace aidl::android::hardware::audio::core {
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ndk::ScopedAStatus ModulePrimary::getTelephony(std::shared_ptr<ITelephony>* _aidl_return) {
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if (!mTelephony) {
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mTelephony = ndk::SharedRefBase::make<Telephony>();
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}
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*_aidl_return = mTelephony.getInstance();
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LOG(DEBUG) << __func__
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<< ": returning instance of ITelephony: " << _aidl_return->get()->asBinder().get();
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus ModulePrimary::calculateBufferSizeFrames(
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const ::aidl::android::media::audio::common::AudioFormatDescription& format,
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int32_t latencyMs, int32_t sampleRateHz, int32_t* bufferSizeFrames) {
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if (format.type != ::aidl::android::media::audio::common::AudioFormatType::PCM &&
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StreamOffloadStub::getSupportedEncodings().count(format.encoding)) {
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*bufferSizeFrames = sampleRateHz / 2; // 1/2 of a second.
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return ndk::ScopedAStatus::ok();
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}
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return Module::calculateBufferSizeFrames(format, latencyMs, sampleRateHz, bufferSizeFrames);
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}
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ndk::ScopedAStatus ModulePrimary::createInputStream(StreamContext&& context,
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const SinkMetadata& sinkMetadata,
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const std::vector<MicrophoneInfo>& microphones,
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std::shared_ptr<StreamIn>* result) {
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if (context.isMmap()) {
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// "Stub" is used because there is no support for MMAP audio I/O on CVD.
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return createStreamInstance<StreamInMmapStub>(result, std::move(context), sinkMetadata,
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microphones);
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}
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return createStreamInstance<StreamInPrimary>(result, std::move(context), sinkMetadata,
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microphones);
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}
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ndk::ScopedAStatus ModulePrimary::createOutputStream(
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StreamContext&& context, const SourceMetadata& sourceMetadata,
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const std::optional<AudioOffloadInfo>& offloadInfo, std::shared_ptr<StreamOut>* result) {
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if (context.isMmap()) {
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// "Stub" is used because there is no support for MMAP audio I/O on CVD.
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return createStreamInstance<StreamOutMmapStub>(result, std::move(context), sourceMetadata,
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offloadInfo);
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} else if (areAllBitPositionFlagsSet(
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context.getFlags().get<AudioIoFlags::output>(),
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{AudioOutputFlags::COMPRESS_OFFLOAD, AudioOutputFlags::NON_BLOCKING})) {
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// "Stub" is used because there is no actual decoder. The stream just
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// extracts the clip duration from the media file header and simulates
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// playback over time.
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return createStreamInstance<StreamOutOffloadStub>(result, std::move(context),
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sourceMetadata, offloadInfo);
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}
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return createStreamInstance<StreamOutPrimary>(result, std::move(context), sourceMetadata,
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offloadInfo);
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}
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ndk::ScopedAStatus ModulePrimary::createMmapBuffer(const AudioPortConfig& portConfig,
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int32_t bufferSizeFrames, int32_t frameSizeBytes,
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MmapBufferDescriptor* desc) {
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const size_t bufferSizeBytes = static_cast<size_t>(bufferSizeFrames) * frameSizeBytes;
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// The actual mmap buffer for I/O is created after the stream exits standby, via
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// 'IStreamCommon.createMmapBuffer'. But we must return a valid file descriptor here because
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// 'MmapBufferDescriptor' can not contain a "null" fd.
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const std::string regionName =
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std::string("mmap-sim-o-") +
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std::to_string(portConfig.ext.get<AudioPortExt::Tag::mix>().handle);
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int fd = ashmem_create_region(regionName.c_str(), bufferSizeBytes);
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if (fd < 0) {
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PLOG(ERROR) << __func__ << ": failed to create shared memory region of " << bufferSizeBytes
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<< " bytes";
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_STATE);
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}
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desc->sharedMemory.fd = ndk::ScopedFileDescriptor(fd);
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desc->sharedMemory.size = bufferSizeBytes;
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desc->burstSizeFrames = bufferSizeFrames / 2;
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desc->flags = 0;
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LOG(DEBUG) << __func__ << ": " << desc->toString();
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return ndk::ScopedAStatus::ok();
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}
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int32_t ModulePrimary::getNominalLatencyMs(const AudioPortConfig& portConfig) {
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static constexpr int32_t kLowLatencyMs = 5;
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// 85 ms is chosen considering 4096 frames @ 48 kHz. This is the value which allows
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// the virtual Android device implementation to pass CTS. Hardware implementations
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// should have significantly lower latency.
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static constexpr int32_t kStandardLatencyMs = 85;
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return hasMmapFlag(portConfig.flags.value()) ? kLowLatencyMs : kStandardLatencyMs;
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}
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} // namespace aidl::android::hardware::audio::core
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