1 /*
2 * Copyright 2021 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 #define LOG_TAG "BTAudioProviderLeAudioOffload"
18
19 #include "LeAudioOffloadAudioProvider.h"
20
21 #include <android-base/logging.h>
22
23 #include "BluetoothAudioSessionReport_2_1.h"
24 #include "BluetoothAudioSupportedCodecsDB_2_1.h"
25
26 namespace android {
27 namespace hardware {
28 namespace bluetooth {
29 namespace audio {
30 namespace V2_1 {
31 namespace implementation {
32
33 using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_1;
34 using ::android::hardware::Void;
35 using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
36 using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
37 using ::android::hardware::bluetooth::audio::V2_1::SampleRate;
38
39 using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
40
LeAudioOffloadOutputAudioProvider()41 LeAudioOffloadOutputAudioProvider::LeAudioOffloadOutputAudioProvider()
42 : LeAudioOffloadAudioProvider() {
43 session_type_ = SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
44 }
45
LeAudioOffloadInputAudioProvider()46 LeAudioOffloadInputAudioProvider::LeAudioOffloadInputAudioProvider()
47 : LeAudioOffloadAudioProvider() {
48 session_type_ = SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH;
49 }
50
LeAudioOffloadAudioProvider()51 LeAudioOffloadAudioProvider::LeAudioOffloadAudioProvider()
52 : BluetoothAudioProvider() {}
53
isValid(const V2_0::SessionType & sessionType)54 bool LeAudioOffloadAudioProvider::isValid(const V2_0::SessionType& sessionType) {
55 LOG(ERROR) << __func__ << ", invalid session type for Offloaded Le Audio provider: "
56 << toString(sessionType);
57
58 return false;
59 }
60
isValid(const SessionType & sessionType)61 bool LeAudioOffloadAudioProvider::isValid(const SessionType& sessionType) {
62 return (sessionType == session_type_);
63 }
64
startSession_2_1(const sp<V2_0::IBluetoothAudioPort> & hostIf,const AudioConfiguration & audioConfig,startSession_cb _hidl_cb)65 Return<void> LeAudioOffloadAudioProvider::startSession_2_1(
66 const sp<V2_0::IBluetoothAudioPort>& hostIf,
67 const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
68 /**
69 * Initialize the audio platform if audioConfiguration is supported.
70 * Save the IBluetoothAudioPort interface, so that it can be used
71 * later to send stream control commands to the HAL client, based on
72 * interaction with Audio framework.
73 */
74 if (audioConfig.getDiscriminator() !=
75 AudioConfiguration::hidl_discriminator::leAudioCodecConfig) {
76 LOG(WARNING) << __func__
77 << " - Invalid Audio Configuration=" << toString(audioConfig);
78 _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
79 DataMQ::Descriptor());
80 return Void();
81 }
82
83 if (!android::bluetooth::audio::IsOffloadLeAudioConfigurationValid(session_type_,
84 audioConfig.leAudioCodecConfig())) {
85 LOG(WARNING) << __func__ << " - Unsupported LC3 Offloaded Configuration="
86 << toString(audioConfig.leAudioCodecConfig());
87 _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
88 DataMQ::Descriptor());
89 return Void();
90 }
91
92 return BluetoothAudioProvider::startSession_2_1(hostIf, audioConfig,
93 _hidl_cb);
94 }
95
onSessionReady(startSession_cb _hidl_cb)96 Return<void> LeAudioOffloadAudioProvider::onSessionReady(startSession_cb _hidl_cb) {
97 BluetoothAudioSessionReport_2_1::OnSessionStarted(session_type_, stack_iface_,
98 nullptr, audio_config_);
99 _hidl_cb(BluetoothAudioStatus::SUCCESS, DataMQ::Descriptor());
100 return Void();
101 }
102
103 } // namespace implementation
104 } // namespace V2_1
105 } // namespace audio
106 } // namespace bluetooth
107 } // namespace hardware
108 } // namespace android
109