1 /*
2 * Copyright 2020 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 "BTAudioProviderA2dpOffload"
18
19 #include "A2dpOffloadAudioProvider.h"
20
21 #include <android-base/logging.h>
22 #include <fmq/MessageQueue.h>
23 #include <hidl/MQDescriptor.h>
24
25 #include "BluetoothAudioSessionReport_2_1.h"
26 #include "BluetoothAudioSupportedCodecsDB_2_1.h"
27
28 namespace android {
29 namespace hardware {
30 namespace bluetooth {
31 namespace audio {
32 namespace V2_1 {
33 namespace implementation {
34
35 using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_1;
36 using ::android::hardware::kSynchronizedReadWrite;
37 using ::android::hardware::MessageQueue;
38 using ::android::hardware::Void;
39 using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
40
41 using DataMQ = MessageQueue<uint8_t, kSynchronizedReadWrite>;
42
A2dpOffloadAudioProvider()43 A2dpOffloadAudioProvider::A2dpOffloadAudioProvider()
44 : BluetoothAudioProvider() {
45 session_type_ = SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH;
46 }
47
isValid(const V2_0::SessionType & sessionType)48 bool A2dpOffloadAudioProvider::isValid(const V2_0::SessionType& sessionType) {
49 return isValid(static_cast<SessionType>(sessionType));
50 }
51
isValid(const SessionType & sessionType)52 bool A2dpOffloadAudioProvider::isValid(const SessionType& sessionType) {
53 return (sessionType == session_type_);
54 }
55
startSession(const sp<IBluetoothAudioPort> & hostIf,const AudioConfiguration & audioConfig,startSession_cb _hidl_cb)56 Return<void> A2dpOffloadAudioProvider::startSession(
57 const sp<IBluetoothAudioPort>& hostIf,
58 const AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
59 /**
60 * Initialize the audio platform if audioConfiguration is supported.
61 * Save the IBluetoothAudioPort interface, so that it can be used
62 * later to send stream control commands to the HAL client, based on
63 * interaction with Audio framework.
64 */
65 if (audioConfig.getDiscriminator() !=
66 AudioConfiguration::hidl_discriminator::codecConfig) {
67 LOG(WARNING) << __func__
68 << " - Invalid Audio Configuration=" << toString(audioConfig);
69 _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
70 DataMQ::Descriptor());
71 return Void();
72 } else if (!android::bluetooth::audio::IsOffloadCodecConfigurationValid(
73 session_type_, audioConfig.codecConfig())) {
74 _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
75 DataMQ::Descriptor());
76 return Void();
77 }
78
79 return BluetoothAudioProvider::startSession(hostIf, audioConfig, _hidl_cb);
80 }
81
onSessionReady(startSession_cb _hidl_cb)82 Return<void> A2dpOffloadAudioProvider::onSessionReady(
83 startSession_cb _hidl_cb) {
84 BluetoothAudioSessionReport_2_1::OnSessionStarted(session_type_, stack_iface_,
85 nullptr, audio_config_);
86 _hidl_cb(BluetoothAudioStatus::SUCCESS, DataMQ::Descriptor());
87 return Void();
88 }
89
90 } // namespace implementation
91 } // namespace V2_1
92 } // namespace audio
93 } // namespace bluetooth
94 } // namespace hardware
95 } // namespace android
96