1 /*
2 * Copyright (C) 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 #include <stdio.h>
18 #include <stdlib.h>
19 #include <string.h>
20 #include <unistd.h>
21 #include <sstream>
22 #include <string>
23
24 #include <android_audio_controller.h>
25
help(const char * argv0)26 static void help(const char* argv0) {
27 if (argv0 == nullptr || argv0[0] == 0) argv0 = "android_audio_controller_test";
28 printf("Usage instructions:\n");
29 printf("%s [-d] -f <file path> -s <server address> [-t]\n", argv0);
30 printf("-d to switch between non-ducking (default) and ducking\n");
31 printf("-e to switch between exclusive (default) and non-exclusive\n");
32 printf("-f <file path>: path of the WAV file containing the sound sample to play\n");
33 printf("-s <server address>: the address of the Android Audio Control HAL server\n");
34 printf("-t to switch between non-transient (default) and transient\n");
35 printf("%s -h to repeat this message\n", argv0);
36 }
37
error(const char * msg,int err)38 static void error(const char* msg, int err) {
39 fprintf(stderr, "error: %s", msg);
40 if (err != 0) fprintf(stderr, " (%d %s)", err, strerror(err));
41 fprintf(stderr, "\n");
42 exit(1);
43 }
44
45 class AudioSession {
46 public:
~AudioSession()47 ~AudioSession() {
48 if (mSession != AAFC_SESSION_ID_INVALID) aafc_release_audio_focus(mSession);
49 }
50
session() const51 aafc_session_id_t session() const { return mSession; }
52
operator bool() const53 explicit operator bool() const { return mSession != AAFC_SESSION_ID_INVALID; }
54
AudioSession(const aafc_audio_focus_request_t & request)55 explicit AudioSession(const aafc_audio_focus_request_t& request) {
56 mSession = aafc_acquire_audio_focus(request);
57 }
58
59 private:
60 explicit AudioSession(aafc_session_id_t id);
61
62 aafc_session_id_t mSession;
63 };
64
main(int argc,char ** argv)65 int main(int argc, char** argv) {
66 int c;
67 std::string file_path;
68 std::string server_addr;
69
70 // TODO(egranata): allow custom usage & zone
71 aafc_audio_focus_request_t request = {.audio_usage = AAFC_AUDIO_USAGE_EMERGENCY,
72 .zone_id = 0,
73 .allow_duck = false,
74 .is_transient = false,
75 .is_exclusive = true};
76
77 while ((c = getopt(argc, argv, "def:hs:t")) != -1) {
78 switch (c) {
79 case 'd':
80 request.allow_duck = !request.allow_duck;
81 break;
82 case 'e':
83 request.is_exclusive = !request.is_exclusive;
84 break;
85 case 'f':
86 file_path = optarg;
87 break;
88 case 'h':
89 help(argv[0]);
90 exit(0);
91 break;
92 case 's':
93 server_addr = optarg;
94 break;
95 case 't':
96 request.is_transient = !request.is_transient;
97 break;
98 }
99 }
100
101 if (file_path.empty() || server_addr.empty()) {
102 help(argv[0]);
103 exit(0);
104 }
105
106 int ok = aafc_init_audio_focus_controller(server_addr.c_str());
107 if (ok != 0) {
108 error("server connection failed", ok);
109 }
110
111 AudioSession session(request);
112 if (!session) {
113 error("audio focus could not be acquired", 0);
114 }
115
116 // TODO(egranata): find a cleaner way to do this (e.g. tinyalsa APIs)
117 std::stringstream ss;
118 ss << "/usr/bin/aplay \"" << file_path << "\"";
119 std::string cmd = ss.str();
120 system(cmd.c_str());
121
122 return 0;
123 }
124