Add bluetooth.audio@2.2 implementation
Bug: 201292721
Bug: 150670922
Bug: 197297498
Test: m android.hardware.bluetooth.audio@2.2-impl
Change-Id: I224b1e001337165e5191060f0ae532933a419b68
diff --git a/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp b/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
new file mode 100644
index 0000000..af6ec99
--- /dev/null
+++ b/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2021 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 "BTAudioProviderLeAudio"
+
+#include "LeAudioAudioProvider.h"
+
+#include <android-base/logging.h>
+
+#include "BluetoothAudioSessionReport_2_2.h"
+#include "BluetoothAudioSupportedCodecsDB_2_1.h"
+
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+namespace V2_2 {
+namespace implementation {
+
+using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_2;
+using ::android::hardware::Void;
+using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
+using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
+using ::android::hardware::bluetooth::audio::V2_1::SampleRate;
+
+static constexpr uint32_t kBufferOutCount = 2; // two frame buffer
+static constexpr uint32_t kBufferInCount = 2; // two frame buffer
+
+LeAudioOutputAudioProvider::LeAudioOutputAudioProvider()
+ : LeAudioAudioProvider() {
+ session_type_ = V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH;
+}
+
+LeAudioInputAudioProvider::LeAudioInputAudioProvider()
+ : LeAudioAudioProvider() {
+ session_type_ = V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH;
+}
+
+LeAudioAudioProvider::LeAudioAudioProvider()
+ : BluetoothAudioProvider(), mDataMQ(nullptr) {}
+
+bool LeAudioAudioProvider::isValid(const V2_0::SessionType& sessionType) {
+ LOG(ERROR) << __func__ << ", invalid session type for Le Audio provider: "
+ << toString(sessionType);
+
+ return false;
+}
+
+bool LeAudioAudioProvider::isValid(const V2_1::SessionType& sessionType) {
+ return (sessionType == session_type_);
+}
+
+Return<void> LeAudioAudioProvider::startSession_2_1(
+ const sp<V2_0::IBluetoothAudioPort>& hostIf,
+ const V2_1::AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
+ if (audioConfig.getDiscriminator() !=
+ V2_1::AudioConfiguration::hidl_discriminator::pcmConfig) {
+ LOG(WARNING) << __func__
+ << " - Invalid Audio Configuration=" << toString(audioConfig);
+ _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
+ DataMQ::Descriptor());
+ return Void();
+ }
+
+ AudioConfiguration audioConfig_2_2;
+ audioConfig_2_2.pcmConfig(
+ {.sampleRate =
+ static_cast<V2_1::SampleRate>(audioConfig.pcmConfig().sampleRate),
+ .channelMode = audioConfig.pcmConfig().channelMode,
+ .bitsPerSample = audioConfig.pcmConfig().bitsPerSample,
+ .dataIntervalUs = 0});
+
+ return startSession_2_2(hostIf, audioConfig_2_2, _hidl_cb);
+}
+
+Return<void> LeAudioAudioProvider::startSession_2_2(
+ const sp<V2_0::IBluetoothAudioPort>& hostIf,
+ const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
+ /**
+ * Initialize the audio platform if audioConfiguration is supported.
+ * Save the IBluetoothAudioPort interface, so that it can be used
+ * later to send stream control commands to the HAL client, based on
+ * interaction with Audio framework.
+ */
+ if (audioConfig.getDiscriminator() !=
+ AudioConfiguration::hidl_discriminator::pcmConfig) {
+ LOG(WARNING) << __func__
+ << " - Invalid Audio Configuration=" << toString(audioConfig);
+ _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
+ DataMQ::Descriptor());
+ return Void();
+ } else if (!android::bluetooth::audio::IsSoftwarePcmConfigurationValid_2_1(
+ audioConfig.pcmConfig())) {
+ LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
+ << toString(audioConfig.pcmConfig());
+ _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
+ DataMQ::Descriptor());
+ return Void();
+ }
+
+ uint32_t kDataMqSize = 0;
+ switch (audioConfig.pcmConfig().sampleRate) {
+ case SampleRate::RATE_8000:
+ kDataMqSize = 8000;
+ break;
+ case SampleRate::RATE_16000:
+ kDataMqSize = 16000;
+ break;
+ case SampleRate::RATE_24000:
+ kDataMqSize = 24000;
+ break;
+ case SampleRate::RATE_32000:
+ kDataMqSize = 32000;
+ break;
+ case SampleRate::RATE_44100:
+ kDataMqSize = 44100;
+ break;
+ case SampleRate::RATE_48000:
+ kDataMqSize = 48000;
+ break;
+ default:
+ LOG(WARNING) << __func__ << " - Unsupported sampling frequency="
+ << toString(audioConfig.pcmConfig());
+ _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
+ DataMQ::Descriptor());
+ return Void();
+ }
+
+ /* Number of samples per millisecond */
+ kDataMqSize = ceil(kDataMqSize / 1000);
+
+ switch (audioConfig.pcmConfig().channelMode) {
+ case ChannelMode::MONO:
+ break;
+ case ChannelMode::STEREO:
+ kDataMqSize *= 2;
+ break;
+ default:
+ /* This should never happen it would be caught while validating
+ * parameters.
+ */
+ break;
+ }
+
+ switch (audioConfig.pcmConfig().bitsPerSample) {
+ case BitsPerSample::BITS_16:
+ kDataMqSize *= 2;
+ break;
+ case BitsPerSample::BITS_24:
+ kDataMqSize *= 3;
+ break;
+ case BitsPerSample::BITS_32:
+ kDataMqSize *= 4;
+ break;
+ default:
+ /* This should never happen it would be caught while validating
+ * parameters.
+ */
+ break;
+ }
+
+ if (session_type_ == V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH)
+ kDataMqSize *= kBufferOutCount;
+ else if (session_type_ ==
+ V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH)
+ kDataMqSize *= kBufferInCount;
+ else
+ LOG(WARNING) << __func__ << ", default single buffer used";
+
+ kDataMqSize *= audioConfig.pcmConfig().dataIntervalUs / 1000;
+
+ LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
+ << " byte(s)";
+
+ std::unique_ptr<DataMQ> tempDataMQ(
+ new DataMQ(kDataMqSize, /* EventFlag */ true));
+ if (tempDataMQ && tempDataMQ->isValid()) {
+ mDataMQ = std::move(tempDataMQ);
+ } else {
+ ALOGE_IF(!tempDataMQ, "failed to allocate data MQ");
+ ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "data MQ is invalid");
+ _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
+ return Void();
+ }
+
+ return BluetoothAudioProvider::startSession_2_2(hostIf, audioConfig,
+ _hidl_cb);
+}
+
+Return<void> LeAudioAudioProvider::onSessionReady(startSession_cb _hidl_cb) {
+ if (mDataMQ && mDataMQ->isValid()) {
+ BluetoothAudioSessionReport_2_2::OnSessionStarted(
+ session_type_, stack_iface_, mDataMQ->getDesc(), audio_config_);
+ _hidl_cb(BluetoothAudioStatus::SUCCESS, *mDataMQ->getDesc());
+ } else {
+ _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
+ }
+ return Void();
+}
+
+} // namespace implementation
+} // namespace V2_2
+} // namespace audio
+} // namespace bluetooth
+} // namespace hardware
+} // namespace android