SDL  2.0
testaudioinfo.c
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1 /*
2  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
3 
4  This software is provided 'as-is', without any express or implied
5  warranty. In no event will the authors be held liable for any damages
6  arising from the use of this software.
7 
8  Permission is granted to anyone to use this software for any purpose,
9  including commercial applications, and to alter it and redistribute it
10  freely.
11 */
12 #include <stdio.h>
13 #include "SDL.h"
14 
15 static void
16 print_devices(int iscapture)
17 {
18  const char *typestr = ((iscapture) ? "capture" : "output");
19  int n = SDL_GetNumAudioDevices(iscapture);
20 
21  SDL_Log("Found %d %s device%s:\n", n, typestr, n != 1 ? "s" : "");
22 
23  if (n == -1)
24  SDL_Log(" Driver can't detect specific %s devices.\n\n", typestr);
25  else if (n == 0)
26  SDL_Log(" No %s devices found.\n\n", typestr);
27  else {
28  int i;
29  for (i = 0; i < n; i++) {
30  const char *name = SDL_GetAudioDeviceName(i, iscapture);
31  if (name != NULL)
32  SDL_Log(" %d: %s\n", i, name);
33  else
34  SDL_Log(" %d Error: %s\n", i, SDL_GetError());
35  }
36  SDL_Log("\n");
37  }
38 }
39 
40 int
41 main(int argc, char **argv)
42 {
43  int n;
44 
45  /* Enable standard application logging */
46  SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
47 
48  /* Load the SDL library */
49  if (SDL_Init(SDL_INIT_AUDIO) < 0) {
50  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
51  return (1);
52  }
53 
54  /* Print available audio drivers */
55  n = SDL_GetNumAudioDrivers();
56  if (n == 0) {
57  SDL_Log("No built-in audio drivers\n\n");
58  } else {
59  int i;
60  SDL_Log("Built-in audio drivers:\n");
61  for (i = 0; i < n; ++i) {
62  SDL_Log(" %d: %s\n", i, SDL_GetAudioDriver(i));
63  }
64  SDL_Log("Select a driver with the SDL_AUDIODRIVER environment variable.\n");
65  }
66 
67  SDL_Log("Using audio driver: %s\n\n", SDL_GetCurrentAudioDriver());
68 
69  print_devices(0);
70  print_devices(1);
71 
72  SDL_Quit();
73  return 0;
74 }