Add HFP default implementation
Bug: 265057196
Test: m android.hardware.bluetooth.audio-update-api
Change-Id: I712eb4db0d776b465436ae54730ad883ecaf40a0
diff --git a/bluetooth/audio/aidl/default/HfpSoftwareAudioProvider.cpp b/bluetooth/audio/aidl/default/HfpSoftwareAudioProvider.cpp
new file mode 100644
index 0000000..0f96046
--- /dev/null
+++ b/bluetooth/audio/aidl/default/HfpSoftwareAudioProvider.cpp
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderHfpSW"
+
+#include "HfpSoftwareAudioProvider.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+static constexpr uint32_t kBufferCount = 2; // two frame buffer
+
+HfpSoftwareOutputAudioProvider::HfpSoftwareOutputAudioProvider()
+ : HfpSoftwareAudioProvider() {
+ session_type_ = SessionType::HFP_SOFTWARE_ENCODING_DATAPATH;
+}
+
+HfpSoftwareInputAudioProvider::HfpSoftwareInputAudioProvider()
+ : HfpSoftwareAudioProvider() {
+ session_type_ = SessionType::HFP_SOFTWARE_DECODING_DATAPATH;
+}
+
+HfpSoftwareAudioProvider::HfpSoftwareAudioProvider()
+ : BluetoothAudioProvider(), data_mq_(nullptr) {
+}
+
+bool HfpSoftwareAudioProvider::isValid(const SessionType& sessionType) {
+ return (sessionType == session_type_);
+}
+
+ndk::ScopedAStatus HfpSoftwareAudioProvider::startSession(
+ const std::shared_ptr<IBluetoothAudioPort>& host_if,
+ const AudioConfiguration& audio_config,
+ const std::vector<LatencyMode>& latency_modes, DataMQDesc* _aidl_return) {
+ if (audio_config.getTag() != AudioConfiguration::pcmConfig) {
+ LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+ << audio_config.toString();
+ *_aidl_return = DataMQDesc();
+ return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+ }
+ const PcmConfiguration& pcm_config =
+ audio_config.get<AudioConfiguration::pcmConfig>();
+ if (!BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(pcm_config)) {
+ LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
+ << pcm_config.toString();
+ *_aidl_return = DataMQDesc();
+ return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+ }
+
+ bool isValidConfig = true;
+
+ if (pcm_config.bitsPerSample != 16) {
+ isValidConfig = false;
+ }
+
+ if (pcm_config.sampleRateHz != 8000 && pcm_config.sampleRateHz != 16000 &&
+ pcm_config.sampleRateHz != 32000) {
+ isValidConfig = false;
+ }
+
+ if (pcm_config.channelMode != ChannelMode::MONO) {
+ isValidConfig = false;
+ }
+
+ if (pcm_config.dataIntervalUs != 7500) {
+ isValidConfig = false;
+ }
+
+ int bytes_per_sample = pcm_config.bitsPerSample / 8;
+
+ uint32_t data_mq_size = kBufferCount * bytes_per_sample *
+ (pcm_config.sampleRateHz / 1000) *
+ pcm_config.dataIntervalUs / 1000;
+ if (!isValidConfig) {
+ LOG(ERROR) << __func__ << "Unexpected audio buffer size: " << data_mq_size
+ << ", SampleRateHz: " << pcm_config.sampleRateHz
+ << ", ChannelMode: " << toString(pcm_config.channelMode)
+ << ", BitsPerSample: "
+ << static_cast<int>(pcm_config.bitsPerSample)
+ << ", BytesPerSample: " << bytes_per_sample
+ << ", DataIntervalUs: " << pcm_config.dataIntervalUs
+ << ", SessionType: " << toString(session_type_);
+ return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+ }
+
+ LOG(INFO) << __func__ << " - size of audio buffer " << data_mq_size
+ << " byte(s)";
+
+ std::unique_ptr<DataMQ> temp_data_mq(
+ new DataMQ(data_mq_size, /* EventFlag */ true));
+ if (temp_data_mq == nullptr || !temp_data_mq->isValid()) {
+ ALOGE_IF(!temp_data_mq, "failed to allocate data MQ");
+ ALOGE_IF(temp_data_mq && !temp_data_mq->isValid(), "data MQ is invalid");
+ *_aidl_return = DataMQDesc();
+ return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+ }
+ data_mq_ = std::move(temp_data_mq);
+
+ return BluetoothAudioProvider::startSession(host_if, audio_config,
+ latency_modes, _aidl_return);
+}
+
+ndk::ScopedAStatus HfpSoftwareAudioProvider::onSessionReady(
+ DataMQDesc* _aidl_return) {
+ if (data_mq_ == nullptr || !data_mq_->isValid()) {
+ *_aidl_return = DataMQDesc();
+ return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+ }
+ *_aidl_return = data_mq_->dupeDesc();
+ auto desc = data_mq_->dupeDesc();
+ BluetoothAudioSessionReport::OnSessionStarted(
+ session_type_, stack_iface_, &desc, *audio_config_, latency_modes_);
+ return ndk::ScopedAStatus::ok();
+}
+
+} // namespace audio
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android
+} // namespace aidl