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 #include "btm_sco_hfp_hal.h"
18
19 #include <vector>
20
21 #include "common/init_flags.h"
22 #include "device/include/esco_parameters.h"
23 #include "osi/include/properties.h"
24
25 namespace hfp_hal_interface {
26 namespace {
27 bool offload_supported = true;
28 bool offload_enabled = true;
29 std::vector<bt_codec> cached_codecs;
30 } // namespace
31
32 // Android implementation only has consts. Initialize CVSD and MSBC to PCM
33 // offloaded defaults.
init()34 void init() {
35 bt_codec cvsd = {
36 .codec = codec::CVSD,
37 .data_path = ESCO_DATA_PATH_PCM,
38 };
39
40 bt_codec msbc = {
41 .codec = codec::MSBC,
42 .data_path = ESCO_DATA_PATH_PCM,
43 };
44
45 cached_codecs.clear();
46 cached_codecs.emplace_back(cvsd);
47 cached_codecs.emplace_back(msbc);
48 }
49
50 // Android statically compiles WBS support.
get_wbs_supported()51 bool get_wbs_supported() { return !DISABLE_WBS; }
52
get_swb_supported()53 bool get_swb_supported() {
54 return osi_property_get_bool("bluetooth.hfp.swb.supported", false) &&
55 bluetooth::common::init_flags::sco_codec_select_lc3_is_enabled();
56 }
57
58 // Checks the supported codecs
get_codec_capabilities(uint64_t codecs)59 bt_codecs get_codec_capabilities(uint64_t codecs) {
60 bt_codecs codec_list = {.offload_capable = offload_supported};
61
62 for (auto c : cached_codecs) {
63 if (c.codec & codecs) {
64 codec_list.codecs.push_back(c);
65 }
66 }
67
68 return codec_list;
69 }
70
71 // Check if hardware offload is supported
get_offload_supported()72 bool get_offload_supported() { return offload_supported; }
73
74 // Check if hardware offload is enabled
get_offload_enabled()75 bool get_offload_enabled() { return offload_supported && offload_enabled; }
76
77 // Set offload enable/disable
enable_offload(bool enable)78 bool enable_offload(bool enable) {
79 if (!offload_supported) {
80 return false;
81 }
82 offload_enabled = enable;
83 return true;
84 }
85
86 // On Android, this is a no-op because the settings default to offloaded case.
set_codec_datapath(esco_coding_format_t coding_format)87 void set_codec_datapath(esco_coding_format_t coding_format) {}
88
89 // No packet size limits on Android since it will be offloaded.
get_packet_size(int codec)90 int get_packet_size(int codec) { return kDefaultPacketSize; }
91
notify_sco_connection_change(RawAddress device,bool is_connected,int codec)92 void notify_sco_connection_change(RawAddress device, bool is_connected,
93 int codec) {
94 // Do nothing since this is handled by Android's audio hidl.
95 }
96
97 // On Android, this is a no-op because the settings default to work for Android.
update_esco_parameters(enh_esco_params_t * p_parms)98 void update_esco_parameters(enh_esco_params_t* p_parms) {}
99 } // namespace hfp_hal_interface
100