107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/*
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* Copyright 2018 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 "BTAudioProviderHearingAid"
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#include <android-base/logging.h>
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#include "BluetoothAudioSessionReport.h"
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#include "BluetoothAudioSupportedCodecsDB.h"
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#include "HearingAidAudioProvider.h"
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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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namespace V2_0 {
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namespace implementation {
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using ::android::bluetooth::audio::BluetoothAudioSessionReport;
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using ::android::hardware::Void;
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static constexpr uint32_t kPcmFrameSize = 4; // 16 bits per sample / stereo
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static constexpr uint32_t kPcmFrameCount = 128;
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static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
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static constexpr uint32_t kRtpFrameCount = 7; // max counts by 1 tick (20ms)
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static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
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static constexpr uint32_t kBufferCount = 1; // single buffer
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static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;
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HearingAidAudioProvider::HearingAidAudioProvider()
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: BluetoothAudioProvider(), mDataMQ(nullptr) {
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LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
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<< " byte(s)";
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std::unique_ptr<DataMQ> tempDataMQ(
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new DataMQ(kDataMqSize, /* EventFlag */ true));
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if (tempDataMQ && tempDataMQ->isValid()) {
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mDataMQ = std::move(tempDataMQ);
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session_type_ = SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH;
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} else {
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ALOGE_IF(!tempDataMQ, "failed to allocate data MQ");
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ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "data MQ is invalid");
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}
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}
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bool HearingAidAudioProvider::isValid(const SessionType& sessionType) {
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return (sessionType == session_type_ && mDataMQ && mDataMQ->isValid());
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}
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Return<void> HearingAidAudioProvider::startSession(
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const sp<IBluetoothAudioPort>& hostIf,
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const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
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/**
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* Initialize the audio platform if audioConfiguration is supported.
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* Save the the IBluetoothAudioPort interface, so that it can be used
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* later to send stream control commands to the HAL client, based on
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* interaction with Audio framework.
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*/
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if (audioConfig.getDiscriminator() !=
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AudioConfiguration::hidl_discriminator::pcmConfig) {
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LOG(WARNING) << __func__
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<< " - Invalid Audio Configuration=" << toString(audioConfig);
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_hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
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DataMQ::Descriptor());
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return Void();
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} else if (!android::bluetooth::audio::IsSoftwarePcmConfigurationValid(
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audioConfig.pcmConfig())) {
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LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
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<< toString(audioConfig.pcmConfig());
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_hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
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DataMQ::Descriptor());
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return Void();
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}
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return BluetoothAudioProvider::startSession(hostIf, audioConfig, _hidl_cb);
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}
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Return<void> HearingAidAudioProvider::onSessionReady(startSession_cb _hidl_cb) {
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if (mDataMQ && mDataMQ->isValid()) {
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BluetoothAudioSessionReport::OnSessionStarted(
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session_type_, stack_iface_, mDataMQ->getDesc(), audio_config_);
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_hidl_cb(BluetoothAudioStatus::SUCCESS, *mDataMQ->getDesc());
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} else {
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_hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
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}
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return Void();
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}
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} // namespace implementation
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} // namespace V2_0
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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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