1 // Copyright (C) 2022 The Android Open Source Project
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 #include "ServiceConfig.h"
16
17 #include <android-base/parseint.h>
18 #include <android-base/strings.h>
19 #include <getopt.h>
20
21 #include <utility>
22 #include <vector>
23
24 namespace audio_proxy::service {
25 namespace {
parseStreamConfig(const char * optarg)26 std::pair<std::string, StreamConfig> parseStreamConfig(const char* optarg) {
27 std::vector<std::string> tokens = android::base::Split(optarg, ":");
28 if (tokens.size() != 3) {
29 return {};
30 }
31
32 StreamConfig config;
33 if (!android::base::ParseUint(tokens[1].c_str(), &config.bufferSizeMs)) {
34 return {};
35 }
36
37 if (!android::base::ParseUint(tokens[2].c_str(), &config.latencyMs)) {
38 return {};
39 }
40
41 return {tokens[0], config};
42 }
43 } // namespace
44
parseServiceConfigFromCommandLine(int argc,char ** argv)45 std::optional<ServiceConfig> parseServiceConfigFromCommandLine(int argc,
46 char** argv) {
47 // $command --name service_name
48 // --stream address1:buffer_size:latency
49 // --stream address2:buffer_size:latency
50 static option options[] = {
51 {"name", required_argument, nullptr, 'n'},
52 {"stream", required_argument, nullptr, 's'},
53 {nullptr, 0, nullptr, 0},
54 };
55
56 // Reset, this is useful in unittest.
57 optind = 0;
58
59 ServiceConfig config;
60 int val = 0;
61 while ((val = getopt_long(argc, argv, "n:s:", options, nullptr)) != -1) {
62 switch (val) {
63 case 'n':
64 config.name = optarg;
65 break;
66
67 case 's': {
68 std::pair<std::string, StreamConfig> streamConfig =
69 parseStreamConfig(optarg);
70 if (streamConfig.first.empty()) {
71 return std::nullopt;
72 }
73
74 auto it = config.streams.emplace(std::move(streamConfig));
75 if (!it.second) {
76 return std::nullopt;
77 }
78
79 break;
80 }
81
82 default:
83 break;
84 }
85 }
86
87 if (config.name.empty() || config.streams.empty()) {
88 return std::nullopt;
89 }
90
91 return config;
92 }
93
94 } // namespace audio_proxy::service