1 /* 2 * Copyright 2022 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 <android/hardware/bluetooth/audio/2.1/types.h> 20 #include <hardware/audio.h> 21 22 #include <condition_variable> 23 #include <mutex> 24 #include <unordered_map> 25 26 #include "device_port_proxy.h" 27 28 enum class BluetoothStreamState : uint8_t; 29 30 namespace android { 31 namespace bluetooth { 32 namespace audio { 33 namespace hidl { 34 35 using SessionType_2_1 = 36 ::android::hardware::bluetooth::audio::V2_1::SessionType; 37 38 class BluetoothAudioPortHidl : public BluetoothAudioPort { 39 public: 40 BluetoothAudioPortHidl(); 41 virtual ~BluetoothAudioPortHidl() = default; 42 43 bool SetUp(audio_devices_t devices) override; 44 45 void TearDown() override; 46 ForcePcmStereoToMono(bool force)47 void ForcePcmStereoToMono(bool force) override { is_stereo_to_mono_ = force; } 48 49 bool Start() override; 50 51 bool Suspend() override; 52 53 void Stop() override; 54 55 bool GetPresentationPosition(uint64_t* delay_ns, uint64_t* bytes, 56 timespec* timestamp) const override; 57 58 void UpdateTracksMetadata(const source_metadata* source_metadata) const; 59 60 BluetoothStreamState GetState() const override; 61 62 void SetState(BluetoothStreamState state) override; 63 IsA2dp()64 bool IsA2dp() const override { 65 return session_type_hidl_ == 66 SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH || 67 session_type_hidl_ == 68 SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH; 69 } 70 IsLeAudio()71 bool IsLeAudio() const override { 72 return session_type_hidl_ == 73 SessionType_2_1::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH || 74 session_type_hidl_ == 75 SessionType_2_1::LE_AUDIO_SOFTWARE_DECODED_DATAPATH || 76 session_type_hidl_ == 77 SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH || 78 session_type_hidl_ == 79 SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH; 80 } 81 82 bool GetPreferredDataIntervalUs(size_t* interval_us) const override; 83 84 protected: 85 SessionType_2_1 session_type_hidl_; 86 uint16_t cookie_; 87 BluetoothStreamState state_; 88 // WR to support Mono: True if fetching Stereo and mixing into Mono 89 bool is_stereo_to_mono_ = false; 90 91 bool in_use() const; 92 93 private: 94 mutable std::mutex cv_mutex_; 95 std::condition_variable internal_cv_; 96 97 bool init_session_type(audio_devices_t device); 98 99 bool CondwaitState(BluetoothStreamState state); 100 101 void ControlResultHandler( 102 const ::android::hardware::bluetooth::audio::V2_0::Status& status); 103 104 void SessionChangedHandler(); 105 }; 106 107 class BluetoothAudioPortHidlOut : public BluetoothAudioPortHidl { 108 public: 109 ~BluetoothAudioPortHidlOut(); 110 111 size_t WriteData(const void* buffer, size_t bytes) const override; 112 bool LoadAudioConfig(audio_config_t* audio_cfg) const override; 113 }; 114 115 class BluetoothAudioPortHidlIn : public BluetoothAudioPortHidl { 116 public: 117 ~BluetoothAudioPortHidlIn(); 118 119 size_t ReadData(void* buffer, size_t bytes) const override; 120 bool LoadAudioConfig(audio_config_t* audio_cfg) const override; 121 }; 122 123 } // namespace hidl 124 } // namespace audio 125 } // namespace bluetooth 126 } // namespace android