1350187c6b
The latency figure depends on the module implementation. Instead of using a hardcoded value, each module should be able to specify its own value. This value is then used for calculating the minimum buffer size. Set the nominal latency of the primary (CF) module to a high value since the virtual device implementation fails CTS tests if it attempts to pretend that it provides low latency. Bug: 302132812 Test: atest CtsMediaAudioTestCases --test-filter=".*AudioTrackTest.*" Test: atest CtsMediaAudioTestCases --test-filter=".*AudioRecordTest.*" Change-Id: I8ce9f230378eea787c9b3c7ce3660c1e4e7bc895
135 lines
4.5 KiB
C++
135 lines
4.5 KiB
C++
/*
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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 <cmath>
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#define LOG_TAG "AHAL_Stream"
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#include <android-base/logging.h>
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#include <audio_utils/clock.h>
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#include "core-impl/Module.h"
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#include "core-impl/StreamStub.h"
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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::media::audio::common::AudioDevice;
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using aidl::android::media::audio::common::AudioOffloadInfo;
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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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StreamStub::StreamStub(StreamContext* context, const Metadata& metadata)
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: StreamCommonImpl(context, metadata),
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mBufferSizeFrames(getContext().getBufferSizeInFrames()),
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mFrameSizeBytes(getContext().getFrameSize()),
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mSampleRate(getContext().getSampleRate()),
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mIsAsynchronous(!!getContext().getAsyncCallback()),
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mIsInput(isInput(metadata)) {}
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::android::status_t StreamStub::init() {
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mIsInitialized = true;
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return ::android::OK;
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}
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::android::status_t StreamStub::drain(StreamDescriptor::DrainMode) {
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if (!mIsInitialized) {
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LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
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}
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if (!mIsInput) {
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if (!mIsAsynchronous) {
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static constexpr float kMicrosPerSecond = MICROS_PER_SECOND;
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const size_t delayUs = static_cast<size_t>(
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std::roundf(mBufferSizeFrames * kMicrosPerSecond / mSampleRate));
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usleep(delayUs);
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} else {
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usleep(500);
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}
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}
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return ::android::OK;
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}
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::android::status_t StreamStub::flush() {
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if (!mIsInitialized) {
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LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
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}
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return ::android::OK;
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}
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::android::status_t StreamStub::pause() {
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if (!mIsInitialized) {
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LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
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}
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return ::android::OK;
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}
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::android::status_t StreamStub::standby() {
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if (!mIsInitialized) {
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LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
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}
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usleep(500);
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mIsStandby = true;
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return ::android::OK;
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}
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::android::status_t StreamStub::start() {
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if (!mIsInitialized) {
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LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
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}
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usleep(500);
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mIsStandby = false;
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return ::android::OK;
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}
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::android::status_t StreamStub::transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
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int32_t*) {
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if (!mIsInitialized) {
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LOG(FATAL) << __func__ << ": must not happen for an uninitialized driver";
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}
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if (mIsStandby) {
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LOG(FATAL) << __func__ << ": must not happen while in standby";
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}
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static constexpr float kMicrosPerSecond = MICROS_PER_SECOND;
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static constexpr float kScaleFactor = .8f;
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if (mIsAsynchronous) {
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usleep(500);
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} else {
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const size_t delayUs = static_cast<size_t>(
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std::roundf(kScaleFactor * frameCount * kMicrosPerSecond / mSampleRate));
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usleep(delayUs);
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}
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if (mIsInput) {
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uint8_t* byteBuffer = static_cast<uint8_t*>(buffer);
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for (size_t i = 0; i < frameCount * mFrameSizeBytes; ++i) {
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byteBuffer[i] = std::rand() % 255;
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}
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}
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*actualFrameCount = frameCount;
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return ::android::OK;
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}
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void StreamStub::shutdown() {
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mIsInitialized = false;
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}
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StreamInStub::StreamInStub(StreamContext&& context, const SinkMetadata& sinkMetadata,
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const std::vector<MicrophoneInfo>& microphones)
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: StreamIn(std::move(context), microphones), StreamStub(&mContextInstance, sinkMetadata) {}
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StreamOutStub::StreamOutStub(StreamContext&& context, const SourceMetadata& sourceMetadata,
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const std::optional<AudioOffloadInfo>& offloadInfo)
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: StreamOut(std::move(context), offloadInfo), StreamStub(&mContextInstance, sourceMetadata) {}
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} // namespace aidl::android::hardware::audio::core
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