1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include <mutex> 20 #include <vector> 21 22 #include <aidl/android/hardware/audio/core/IBluetooth.h> 23 #include <aidl/android/hardware/audio/core/IBluetoothA2dp.h> 24 #include <aidl/android/hardware/audio/core/IBluetoothLe.h> 25 26 #include "core-impl/DevicePortProxy.h" 27 #include "core-impl/ModuleBluetooth.h" 28 #include "core-impl/Stream.h" 29 30 namespace aidl::android::hardware::audio::core { 31 32 class StreamBluetooth : public StreamCommonImpl { 33 public: 34 static bool checkConfigParams( 35 const ::aidl::android::hardware::bluetooth::audio::PcmConfiguration& pcmConfig, 36 const ::aidl::android::media::audio::common::AudioConfigBase& config); 37 38 StreamBluetooth( 39 StreamContext* context, const Metadata& metadata, 40 ModuleBluetooth::BtProfileHandles&& btHandles, 41 const std::shared_ptr<::android::bluetooth::audio::aidl::BluetoothAudioPortAidl>& 42 btDeviceProxy, 43 const ::aidl::android::hardware::bluetooth::audio::PcmConfiguration& pcmConfig); 44 ~StreamBluetooth(); 45 46 // Methods of 'DriverInterface'. 47 ::android::status_t init() override; 48 ::android::status_t drain(StreamDescriptor::DrainMode) override; 49 ::android::status_t flush() override; 50 ::android::status_t pause() override; 51 ::android::status_t standby() override; 52 ::android::status_t start() override; 53 ::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount, 54 int32_t* latencyMs) override; 55 void shutdown() override; 56 57 // Overridden methods of 'StreamCommonImpl', called on a Binder thread. 58 ndk::ScopedAStatus updateMetadataCommon(const Metadata& metadata) override; 59 ndk::ScopedAStatus prepareToClose() override; 60 ndk::ScopedAStatus bluetoothParametersUpdated() override; 61 62 private: 63 const size_t mFrameSizeBytes; 64 const bool mIsInput; 65 const std::weak_ptr<IBluetoothA2dp> mBluetoothA2dp; 66 const std::weak_ptr<IBluetoothLe> mBluetoothLe; 67 const size_t mPreferredDataIntervalUs; 68 mutable std::mutex mLock; 69 // The lock is also used to serialize calls to the proxy. 70 std::shared_ptr<::android::bluetooth::audio::aidl::BluetoothAudioPortAidl> mBtDeviceProxy 71 GUARDED_BY(mLock); // proxy may be null if the stream is not connected to a device 72 }; 73 74 class StreamInBluetooth final : public StreamIn, public StreamBluetooth { 75 public: 76 friend class ndk::SharedRefBase; 77 78 static int32_t getNominalLatencyMs(size_t dataIntervalUs); 79 80 StreamInBluetooth( 81 StreamContext&& context, 82 const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata, 83 const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones, 84 ModuleBluetooth::BtProfileHandles&& btHandles, 85 const std::shared_ptr<::android::bluetooth::audio::aidl::BluetoothAudioPortAidl>& 86 btDeviceProxy, 87 const ::aidl::android::hardware::bluetooth::audio::PcmConfiguration& pcmConfig); 88 89 private: onClose(StreamDescriptor::State)90 void onClose(StreamDescriptor::State) override { defaultOnClose(); } 91 ndk::ScopedAStatus getActiveMicrophones( 92 std::vector<::aidl::android::media::audio::common::MicrophoneDynamicInfo>* _aidl_return) 93 override; 94 }; 95 96 class StreamOutBluetooth final : public StreamOut, public StreamBluetooth { 97 public: 98 friend class ndk::SharedRefBase; 99 100 static int32_t getNominalLatencyMs(size_t dataIntervalUs); 101 102 StreamOutBluetooth( 103 StreamContext&& context, 104 const ::aidl::android::hardware::audio::common::SourceMetadata& sourceMetadata, 105 const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>& 106 offloadInfo, 107 ModuleBluetooth::BtProfileHandles&& btHandles, 108 const std::shared_ptr<::android::bluetooth::audio::aidl::BluetoothAudioPortAidl>& 109 btDeviceProxy, 110 const ::aidl::android::hardware::bluetooth::audio::PcmConfiguration& pcmConfig); 111 112 private: onClose(StreamDescriptor::State)113 void onClose(StreamDescriptor::State) override { defaultOnClose(); } 114 }; 115 116 } // namespace aidl::android::hardware::audio::core 117