140 lines
4.9 KiB
C++
140 lines
4.9 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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#define LOG_TAG "BTAudioProviderHfpSW"
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#include "HfpSoftwareAudioProvider.h"
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#include <BluetoothAudioCodecs.h>
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#include <BluetoothAudioSessionReport.h>
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#include <android-base/logging.h>
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namespace aidl {
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namespace android {
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namespace hardware {
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namespace bluetooth {
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namespace audio {
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static constexpr uint32_t kBufferCount = 2; // two frame buffer
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HfpSoftwareOutputAudioProvider::HfpSoftwareOutputAudioProvider()
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: HfpSoftwareAudioProvider() {
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session_type_ = SessionType::HFP_SOFTWARE_ENCODING_DATAPATH;
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}
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HfpSoftwareInputAudioProvider::HfpSoftwareInputAudioProvider()
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: HfpSoftwareAudioProvider() {
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session_type_ = SessionType::HFP_SOFTWARE_DECODING_DATAPATH;
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}
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HfpSoftwareAudioProvider::HfpSoftwareAudioProvider()
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: BluetoothAudioProvider(), data_mq_(nullptr) {
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}
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bool HfpSoftwareAudioProvider::isValid(const SessionType& sessionType) {
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return (sessionType == session_type_);
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}
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ndk::ScopedAStatus HfpSoftwareAudioProvider::startSession(
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const std::shared_ptr<IBluetoothAudioPort>& host_if,
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const AudioConfiguration& audio_config,
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const std::vector<LatencyMode>& latency_modes, DataMQDesc* _aidl_return) {
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if (audio_config.getTag() != AudioConfiguration::pcmConfig) {
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LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
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<< audio_config.toString();
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*_aidl_return = DataMQDesc();
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
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}
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const PcmConfiguration& pcm_config =
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audio_config.get<AudioConfiguration::pcmConfig>();
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if (!BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(pcm_config)) {
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LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
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<< pcm_config.toString();
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*_aidl_return = DataMQDesc();
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
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}
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bool isValidConfig = true;
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if (pcm_config.bitsPerSample != 16) {
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isValidConfig = false;
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}
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if (pcm_config.sampleRateHz != 8000 && pcm_config.sampleRateHz != 16000 &&
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pcm_config.sampleRateHz != 32000) {
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isValidConfig = false;
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}
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if (pcm_config.channelMode != ChannelMode::MONO) {
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isValidConfig = false;
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}
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if (pcm_config.dataIntervalUs != 7500) {
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isValidConfig = false;
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}
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int bytes_per_sample = pcm_config.bitsPerSample / 8;
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uint32_t data_mq_size = kBufferCount * bytes_per_sample *
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(pcm_config.sampleRateHz / 1000) *
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pcm_config.dataIntervalUs / 1000;
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if (!isValidConfig) {
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LOG(ERROR) << __func__ << "Unexpected audio buffer size: " << data_mq_size
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<< ", SampleRateHz: " << pcm_config.sampleRateHz
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<< ", ChannelMode: " << toString(pcm_config.channelMode)
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<< ", BitsPerSample: "
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<< static_cast<int>(pcm_config.bitsPerSample)
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<< ", BytesPerSample: " << bytes_per_sample
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<< ", DataIntervalUs: " << pcm_config.dataIntervalUs
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<< ", SessionType: " << toString(session_type_);
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
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}
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LOG(INFO) << __func__ << " - size of audio buffer " << data_mq_size
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<< " byte(s)";
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std::unique_ptr<DataMQ> temp_data_mq(
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new DataMQ(data_mq_size, /* EventFlag */ true));
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if (temp_data_mq == nullptr || !temp_data_mq->isValid()) {
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ALOGE_IF(!temp_data_mq, "failed to allocate data MQ");
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ALOGE_IF(temp_data_mq && !temp_data_mq->isValid(), "data MQ is invalid");
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*_aidl_return = DataMQDesc();
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
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}
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data_mq_ = std::move(temp_data_mq);
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return BluetoothAudioProvider::startSession(host_if, audio_config,
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latency_modes, _aidl_return);
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}
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ndk::ScopedAStatus HfpSoftwareAudioProvider::onSessionReady(
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DataMQDesc* _aidl_return) {
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if (data_mq_ == nullptr || !data_mq_->isValid()) {
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*_aidl_return = DataMQDesc();
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return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
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}
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*_aidl_return = data_mq_->dupeDesc();
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auto desc = data_mq_->dupeDesc();
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BluetoothAudioSessionReport::OnSessionStarted(
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session_type_, stack_iface_, &desc, *audio_config_, latency_modes_);
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return ndk::ScopedAStatus::ok();
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}
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} // namespace audio
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} // namespace bluetooth
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} // namespace hardware
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} // namespace android
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} // namespace aidl
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