1*4d7e907cSAndroid Build Coastguard Worker /*
2*4d7e907cSAndroid Build Coastguard Worker * Copyright 2020 The Android Open Source Project
3*4d7e907cSAndroid Build Coastguard Worker *
4*4d7e907cSAndroid Build Coastguard Worker * Licensed under the Apache License, Version 2.0 (the "License");
5*4d7e907cSAndroid Build Coastguard Worker * you may not use this file except in compliance with the License.
6*4d7e907cSAndroid Build Coastguard Worker * You may obtain a copy of the License at
7*4d7e907cSAndroid Build Coastguard Worker *
8*4d7e907cSAndroid Build Coastguard Worker * http://www.apache.org/licenses/LICENSE-2.0
9*4d7e907cSAndroid Build Coastguard Worker *
10*4d7e907cSAndroid Build Coastguard Worker * Unless required by applicable law or agreed to in writing, software
11*4d7e907cSAndroid Build Coastguard Worker * distributed under the License is distributed on an "AS IS" BASIS,
12*4d7e907cSAndroid Build Coastguard Worker * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13*4d7e907cSAndroid Build Coastguard Worker * See the License for the specific language governing permissions and
14*4d7e907cSAndroid Build Coastguard Worker * limitations under the License.
15*4d7e907cSAndroid Build Coastguard Worker */
16*4d7e907cSAndroid Build Coastguard Worker
17*4d7e907cSAndroid Build Coastguard Worker #define LOG_TAG "BTAudioProviderA2dpSoftware"
18*4d7e907cSAndroid Build Coastguard Worker
19*4d7e907cSAndroid Build Coastguard Worker #include "A2dpSoftwareAudioProvider.h"
20*4d7e907cSAndroid Build Coastguard Worker
21*4d7e907cSAndroid Build Coastguard Worker #include <android-base/logging.h>
22*4d7e907cSAndroid Build Coastguard Worker
23*4d7e907cSAndroid Build Coastguard Worker #include "BluetoothAudioSessionReport_2_1.h"
24*4d7e907cSAndroid Build Coastguard Worker #include "BluetoothAudioSupportedCodecsDB_2_1.h"
25*4d7e907cSAndroid Build Coastguard Worker
26*4d7e907cSAndroid Build Coastguard Worker namespace android {
27*4d7e907cSAndroid Build Coastguard Worker namespace hardware {
28*4d7e907cSAndroid Build Coastguard Worker namespace bluetooth {
29*4d7e907cSAndroid Build Coastguard Worker namespace audio {
30*4d7e907cSAndroid Build Coastguard Worker namespace V2_1 {
31*4d7e907cSAndroid Build Coastguard Worker namespace implementation {
32*4d7e907cSAndroid Build Coastguard Worker
33*4d7e907cSAndroid Build Coastguard Worker using ::android::bluetooth::audio::BluetoothAudioSessionReport_2_1;
34*4d7e907cSAndroid Build Coastguard Worker using ::android::hardware::Void;
35*4d7e907cSAndroid Build Coastguard Worker using ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
36*4d7e907cSAndroid Build Coastguard Worker
37*4d7e907cSAndroid Build Coastguard Worker // Here the buffer size is based on SBC
38*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kPcmFrameSize = 4; // 16 bits per sample / stereo
39*4d7e907cSAndroid Build Coastguard Worker // SBC is 128, and here we choose the LCM of 16, 24, and 32
40*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kPcmFrameCount = 96;
41*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
42*4d7e907cSAndroid Build Coastguard Worker // The max counts by 1 tick (20ms) for SBC is about 7. Since using 96 for the
43*4d7e907cSAndroid Build Coastguard Worker // PCM counts, here we just choose a greater number
44*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kRtpFrameCount = 10;
45*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
46*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kBufferCount = 2; // double buffer
47*4d7e907cSAndroid Build Coastguard Worker static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;
48*4d7e907cSAndroid Build Coastguard Worker
A2dpSoftwareAudioProvider()49*4d7e907cSAndroid Build Coastguard Worker A2dpSoftwareAudioProvider::A2dpSoftwareAudioProvider()
50*4d7e907cSAndroid Build Coastguard Worker : BluetoothAudioProvider(), mDataMQ(nullptr) {
51*4d7e907cSAndroid Build Coastguard Worker LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
52*4d7e907cSAndroid Build Coastguard Worker << " byte(s)";
53*4d7e907cSAndroid Build Coastguard Worker std::unique_ptr<DataMQ> tempDataMQ(
54*4d7e907cSAndroid Build Coastguard Worker new DataMQ(kDataMqSize, /* EventFlag */ true));
55*4d7e907cSAndroid Build Coastguard Worker if (tempDataMQ && tempDataMQ->isValid()) {
56*4d7e907cSAndroid Build Coastguard Worker mDataMQ = std::move(tempDataMQ);
57*4d7e907cSAndroid Build Coastguard Worker session_type_ = SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH;
58*4d7e907cSAndroid Build Coastguard Worker } else {
59*4d7e907cSAndroid Build Coastguard Worker ALOGE_IF(!tempDataMQ, "failed to allocate data MQ");
60*4d7e907cSAndroid Build Coastguard Worker ALOGE_IF(tempDataMQ && !tempDataMQ->isValid(), "data MQ is invalid");
61*4d7e907cSAndroid Build Coastguard Worker }
62*4d7e907cSAndroid Build Coastguard Worker }
63*4d7e907cSAndroid Build Coastguard Worker
isValid(const V2_0::SessionType & sessionType)64*4d7e907cSAndroid Build Coastguard Worker bool A2dpSoftwareAudioProvider::isValid(const V2_0::SessionType& sessionType) {
65*4d7e907cSAndroid Build Coastguard Worker return isValid(static_cast<SessionType>(sessionType));
66*4d7e907cSAndroid Build Coastguard Worker }
67*4d7e907cSAndroid Build Coastguard Worker
isValid(const SessionType & sessionType)68*4d7e907cSAndroid Build Coastguard Worker bool A2dpSoftwareAudioProvider::isValid(const SessionType& sessionType) {
69*4d7e907cSAndroid Build Coastguard Worker return (sessionType == session_type_ && mDataMQ && mDataMQ->isValid());
70*4d7e907cSAndroid Build Coastguard Worker }
71*4d7e907cSAndroid Build Coastguard Worker
startSession(const sp<IBluetoothAudioPort> & hostIf,const V2_0::AudioConfiguration & audioConfig,startSession_cb _hidl_cb)72*4d7e907cSAndroid Build Coastguard Worker Return<void> A2dpSoftwareAudioProvider::startSession(
73*4d7e907cSAndroid Build Coastguard Worker const sp<IBluetoothAudioPort>& hostIf,
74*4d7e907cSAndroid Build Coastguard Worker const V2_0::AudioConfiguration& audioConfig, startSession_cb _hidl_cb) {
75*4d7e907cSAndroid Build Coastguard Worker /**
76*4d7e907cSAndroid Build Coastguard Worker * Initialize the audio platform if audioConfiguration is supported.
77*4d7e907cSAndroid Build Coastguard Worker * Save the IBluetoothAudioPort interface, so that it can be used
78*4d7e907cSAndroid Build Coastguard Worker * later to send stream control commands to the HAL client, based on
79*4d7e907cSAndroid Build Coastguard Worker * interaction with Audio framework.
80*4d7e907cSAndroid Build Coastguard Worker */
81*4d7e907cSAndroid Build Coastguard Worker if (audioConfig.getDiscriminator() !=
82*4d7e907cSAndroid Build Coastguard Worker AudioConfiguration::hidl_discriminator::pcmConfig) {
83*4d7e907cSAndroid Build Coastguard Worker LOG(WARNING) << __func__
84*4d7e907cSAndroid Build Coastguard Worker << " - Invalid Audio Configuration=" << toString(audioConfig);
85*4d7e907cSAndroid Build Coastguard Worker _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
86*4d7e907cSAndroid Build Coastguard Worker DataMQ::Descriptor());
87*4d7e907cSAndroid Build Coastguard Worker return Void();
88*4d7e907cSAndroid Build Coastguard Worker } else if (!android::bluetooth::audio::IsSoftwarePcmConfigurationValid(
89*4d7e907cSAndroid Build Coastguard Worker audioConfig.pcmConfig())) {
90*4d7e907cSAndroid Build Coastguard Worker LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
91*4d7e907cSAndroid Build Coastguard Worker << toString(audioConfig.pcmConfig());
92*4d7e907cSAndroid Build Coastguard Worker _hidl_cb(BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION,
93*4d7e907cSAndroid Build Coastguard Worker DataMQ::Descriptor());
94*4d7e907cSAndroid Build Coastguard Worker return Void();
95*4d7e907cSAndroid Build Coastguard Worker }
96*4d7e907cSAndroid Build Coastguard Worker
97*4d7e907cSAndroid Build Coastguard Worker return BluetoothAudioProvider::startSession(hostIf, audioConfig, _hidl_cb);
98*4d7e907cSAndroid Build Coastguard Worker }
99*4d7e907cSAndroid Build Coastguard Worker
onSessionReady(startSession_cb _hidl_cb)100*4d7e907cSAndroid Build Coastguard Worker Return<void> A2dpSoftwareAudioProvider::onSessionReady(
101*4d7e907cSAndroid Build Coastguard Worker startSession_cb _hidl_cb) {
102*4d7e907cSAndroid Build Coastguard Worker if (mDataMQ && mDataMQ->isValid()) {
103*4d7e907cSAndroid Build Coastguard Worker BluetoothAudioSessionReport_2_1::OnSessionStarted(
104*4d7e907cSAndroid Build Coastguard Worker session_type_, stack_iface_, mDataMQ->getDesc(), audio_config_);
105*4d7e907cSAndroid Build Coastguard Worker _hidl_cb(BluetoothAudioStatus::SUCCESS, *mDataMQ->getDesc());
106*4d7e907cSAndroid Build Coastguard Worker } else {
107*4d7e907cSAndroid Build Coastguard Worker _hidl_cb(BluetoothAudioStatus::FAILURE, DataMQ::Descriptor());
108*4d7e907cSAndroid Build Coastguard Worker }
109*4d7e907cSAndroid Build Coastguard Worker return Void();
110*4d7e907cSAndroid Build Coastguard Worker }
111*4d7e907cSAndroid Build Coastguard Worker
112*4d7e907cSAndroid Build Coastguard Worker } // namespace implementation
113*4d7e907cSAndroid Build Coastguard Worker } // namespace V2_1
114*4d7e907cSAndroid Build Coastguard Worker } // namespace audio
115*4d7e907cSAndroid Build Coastguard Worker } // namespace bluetooth
116*4d7e907cSAndroid Build Coastguard Worker } // namespace hardware
117*4d7e907cSAndroid Build Coastguard Worker } // namespace android
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