1 /*
2 * Copyright 2024 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 #include "broadcast_configuration_provider.h"
18
19 #include <cstdint>
20 #include <string>
21 #include <utility>
22 #include <vector>
23
24 #include "internal_include/stack_config.h"
25 #include "le_audio/broadcaster/broadcaster_types.h"
26 #include "le_audio/le_audio_types.h"
27
28 namespace bluetooth::le_audio {
29 namespace broadcaster {
30 /* Software codec configuration provider */
GetBroadcastConfig(const std::vector<std::pair<types::LeAudioContextType,uint8_t>> & subgroup_quality)31 BroadcastConfiguration GetBroadcastConfig(
32 const std::vector<std::pair<types::LeAudioContextType, uint8_t>>& subgroup_quality) {
33 // Select the SW codec parameters based on the first subgroup audio context
34 // Note that the HW offloader may support more quality subgroups.
35 // TODO: Unify the quality selection logic with GetBroadcastOffloadConfig()
36 auto context = types::AudioContexts(subgroup_quality.at(0).first);
37
38 const std::string* options =
39 stack_config_get_interface()->get_pts_broadcast_audio_config_options();
40 if (options) {
41 if (!options->compare("lc3_stereo_48_1_2")) {
42 return lc3_stereo_48_1_2;
43 }
44 if (!options->compare("lc3_stereo_48_2_2")) {
45 return lc3_stereo_48_2_2;
46 }
47 if (!options->compare("lc3_stereo_48_3_2")) {
48 return lc3_stereo_48_3_2;
49 }
50 if (!options->compare("lc3_stereo_48_4_2")) {
51 return lc3_stereo_48_4_2;
52 }
53 }
54
55 // High quality, Low Latency
56 if (context.test_any(types::LeAudioContextType::GAME | types::LeAudioContextType::LIVE)) {
57 return lc3_stereo_24_2_1;
58 }
59
60 // Standard quality, Low Latency
61 if (context.test(types::LeAudioContextType::INSTRUCTIONAL)) {
62 return lc3_mono_16_2_1;
63 }
64
65 // Standard quality, High Reliability
66 if (context.test_any(types::LeAudioContextType::SOUNDEFFECTS |
67 types::LeAudioContextType::UNSPECIFIED)) {
68 return lc3_stereo_16_2_2;
69 }
70
71 if (context.test_any(types::LeAudioContextType::ALERTS |
72 types::LeAudioContextType::NOTIFICATIONS |
73 types::LeAudioContextType::EMERGENCYALARM)) {
74 return lc3_mono_16_2_2;
75 }
76
77 // High quality, High Reliability
78 if (context.test(types::LeAudioContextType::MEDIA)) {
79 return lc3_stereo_24_2_2;
80 }
81
82 // Defaults: Standard quality, High Reliability
83 return lc3_mono_16_2_2;
84 }
85 } // namespace broadcaster
86 } // namespace bluetooth::le_audio
87