230 lines
9.0 KiB
C++
230 lines
9.0 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 "BTAudioProviderSession_2_1"
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#include "BluetoothAudioSession_2_1.h"
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#include <android-base/logging.h>
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#include <android-base/stringprintf.h>
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#include "../aidl_session/HidlToAidlMiddleware_2_0.h"
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#include "../aidl_session/HidlToAidlMiddleware_2_1.h"
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namespace android {
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namespace bluetooth {
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namespace audio {
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using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_0;
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using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_1;
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using SessionType_2_1 =
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::android::hardware::bluetooth::audio::V2_1::SessionType;
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using SessionType_2_0 =
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::android::hardware::bluetooth::audio::V2_0::SessionType;
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::android::hardware::bluetooth::audio::V2_1::AudioConfiguration
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BluetoothAudioSession_2_1::invalidSoftwareAudioConfiguration = {};
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::android::hardware::bluetooth::audio::V2_1::AudioConfiguration
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BluetoothAudioSession_2_1::invalidOffloadAudioConfiguration = {};
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namespace {
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bool is_2_0_session_type(
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const ::android::hardware::bluetooth::audio::V2_1::SessionType&
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session_type) {
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if (session_type == SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH ||
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session_type == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH ||
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session_type == SessionType_2_1::HEARING_AID_SOFTWARE_ENCODING_DATAPATH) {
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return true;
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} else {
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return false;
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}
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}
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bool is_unsupported_2_1_session_type(
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const ::android::hardware::bluetooth::audio::V2_1::SessionType&
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session_type) {
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if (session_type ==
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SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
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session_type ==
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SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
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return true;
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} else {
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return false;
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}
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}
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} // namespace
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BluetoothAudioSession_2_1::BluetoothAudioSession_2_1(
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const ::android::hardware::bluetooth::audio::V2_1::SessionType&
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session_type)
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: audio_session(BluetoothAudioSessionInstance::GetSessionInstance(
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static_cast<SessionType_2_0>(session_type))) {
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if (is_2_0_session_type(session_type) ||
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is_unsupported_2_1_session_type(session_type)) {
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session_type_2_1_ = (SessionType_2_1::UNKNOWN);
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} else {
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session_type_2_1_ = (session_type);
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}
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raw_session_type_ = session_type;
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}
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std::shared_ptr<BluetoothAudioSession>
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BluetoothAudioSession_2_1::GetAudioSession() {
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return audio_session;
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}
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// The control function is for the bluetooth_audio module to get the current
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// AudioConfiguration
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const ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration
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BluetoothAudioSession_2_1::GetAudioConfig() {
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if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
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return HidlToAidlMiddleware_2_1::GetAudioConfig(raw_session_type_);
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std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
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if (audio_session->IsSessionReady()) {
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// If session is unknown it means it should be 2.0 type
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if (session_type_2_1_ != SessionType_2_1::UNKNOWN)
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return audio_config_2_1_;
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::android::hardware::bluetooth::audio::V2_1::AudioConfiguration toConf;
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const AudioConfiguration fromConf = GetAudioSession()->GetAudioConfig();
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// pcmConfig only differs between 2.0 and 2.1 in AudioConfiguration
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if (fromConf.getDiscriminator() ==
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AudioConfiguration::hidl_discriminator::codecConfig) {
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toConf.codecConfig(fromConf.codecConfig());
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} else {
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toConf.pcmConfig() = {
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.sampleRate = static_cast<
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::android::hardware::bluetooth::audio::V2_1::SampleRate>(
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fromConf.pcmConfig().sampleRate),
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.channelMode = fromConf.pcmConfig().channelMode,
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.bitsPerSample = fromConf.pcmConfig().bitsPerSample,
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.dataIntervalUs = 0};
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}
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return toConf;
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} else if (session_type_2_1_ ==
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SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
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return kInvalidOffloadAudioConfiguration;
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} else {
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return kInvalidSoftwareAudioConfiguration;
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}
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}
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bool BluetoothAudioSession_2_1::UpdateAudioConfig(
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const ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration&
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audio_config) {
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bool is_software_session =
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(session_type_2_1_ == SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH ||
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session_type_2_1_ ==
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SessionType_2_1::HEARING_AID_SOFTWARE_ENCODING_DATAPATH ||
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session_type_2_1_ ==
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SessionType_2_1::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH ||
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session_type_2_1_ ==
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SessionType_2_1::LE_AUDIO_SOFTWARE_DECODED_DATAPATH);
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bool is_offload_a2dp_session =
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(session_type_2_1_ == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH);
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auto audio_config_discriminator = audio_config.getDiscriminator();
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bool is_software_audio_config =
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(is_software_session &&
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audio_config_discriminator ==
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::android::hardware::bluetooth::audio::V2_1::AudioConfiguration::
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hidl_discriminator::pcmConfig);
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bool is_a2dp_offload_audio_config =
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(is_offload_a2dp_session &&
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audio_config_discriminator ==
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::android::hardware::bluetooth::audio::V2_1::AudioConfiguration::
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hidl_discriminator::codecConfig);
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if (!is_software_audio_config && !is_a2dp_offload_audio_config) {
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return false;
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}
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audio_config_2_1_ = audio_config;
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return true;
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}
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// The report function is used to report that the Bluetooth stack has started
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// this session without any failure, and will invoke session_changed_cb_ to
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// notify those registered bluetooth_audio outputs
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void BluetoothAudioSession_2_1::OnSessionStarted(
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const sp<IBluetoothAudioPort> stack_iface, const DataMQ::Descriptor* dataMQ,
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const ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration&
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audio_config) {
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if (session_type_2_1_ == SessionType_2_1::UNKNOWN) {
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::android::hardware::bluetooth::audio::V2_0::AudioConfiguration config;
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if (audio_config.getDiscriminator() ==
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::android::hardware::bluetooth::audio::V2_1::AudioConfiguration::
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hidl_discriminator::codecConfig) {
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config.codecConfig(audio_config.codecConfig());
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} else {
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auto& tmpPcm = audio_config.pcmConfig();
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config.pcmConfig(
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::android::hardware::bluetooth::audio::V2_0::PcmParameters{
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.sampleRate = static_cast<SampleRate>(tmpPcm.sampleRate),
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.channelMode = tmpPcm.channelMode,
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.bitsPerSample = tmpPcm.bitsPerSample
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/*dataIntervalUs is not passed to 2.0 */
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});
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}
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audio_session->OnSessionStarted(stack_iface, dataMQ, config);
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} else {
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std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
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if (stack_iface == nullptr) {
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LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
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<< ", IBluetoothAudioPort Invalid";
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} else if (!UpdateAudioConfig(audio_config)) {
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LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
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<< ", AudioConfiguration=" << toString(audio_config)
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<< " Invalid";
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} else if (!audio_session->UpdateDataPath(dataMQ)) {
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LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
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<< " DataMQ Invalid";
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audio_config_2_1_ =
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(session_type_2_1_ == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH
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? kInvalidOffloadAudioConfiguration
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: kInvalidSoftwareAudioConfiguration);
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} else {
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audio_session->stack_iface_ = stack_iface;
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LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
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<< ", AudioConfiguration=" << toString(audio_config);
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audio_session->ReportSessionStatus();
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};
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}
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}
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std::unique_ptr<BluetoothAudioSessionInstance_2_1>
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BluetoothAudioSessionInstance_2_1::instance_ptr =
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std::unique_ptr<BluetoothAudioSessionInstance_2_1>(
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new BluetoothAudioSessionInstance_2_1());
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// API to fetch the session of A2DP / Hearing Aid
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std::shared_ptr<BluetoothAudioSession_2_1>
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BluetoothAudioSessionInstance_2_1::GetSessionInstance(
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const SessionType_2_1& session_type) {
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std::lock_guard<std::mutex> guard(instance_ptr->mutex_);
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if (!instance_ptr->sessions_map_.empty()) {
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auto entry = instance_ptr->sessions_map_.find(session_type);
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if (entry != instance_ptr->sessions_map_.end()) {
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return entry->second;
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}
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}
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std::shared_ptr<BluetoothAudioSession_2_1> session_ptr =
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std::make_shared<BluetoothAudioSession_2_1>(session_type);
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instance_ptr->sessions_map_[session_type] = session_ptr;
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return session_ptr;
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}
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} // namespace audio
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} // namespace bluetooth
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} // namespace android
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