SDL  2.0
testaudiohotplug.c File Reference
#include "SDL_config.h"
#include <stdio.h>
#include <stdlib.h>
#include "SDL.h"
+ Include dependency graph for testaudiohotplug.c:

Go to the source code of this file.

Functions

static void quit (int rc)
 
void fillerup (void *_pos, Uint8 *stream, int len)
 
void poked (int sig)
 
static void iteration ()
 
int main (int argc, char *argv[])
 

Variables

static SDL_AudioSpec spec
 
static Uint8sound = NULL
 
static Uint32 soundlen = 0
 
static int posindex = 0
 
static Uint32 positions [64]
 
static int done = 0
 

Function Documentation

void fillerup ( void _pos,
Uint8 stream,
int  len 
)

Definition at line 46 of file testaudiohotplug.c.

References SDL_memcpy, sound, and soundlen.

Referenced by iteration().

47 {
48  Uint32 pos = *((Uint32 *) _pos);
49  Uint8 *waveptr;
50  int waveleft;
51 
52  /* Set up the pointers */
53  waveptr = sound + pos;
54  waveleft = soundlen - pos;
55 
56  /* Go! */
57  while (waveleft <= len) {
58  SDL_memcpy(stream, waveptr, waveleft);
59  stream += waveleft;
60  len -= waveleft;
61  waveptr = sound;
62  waveleft = soundlen;
63  pos = 0;
64  }
65  SDL_memcpy(stream, waveptr, len);
66  pos += len;
67  *((Uint32 *) _pos) = pos;
68 }
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:155
GLuint GLuint stream
GLenum GLsizei len
static Uint8 * sound
#define SDL_memcpy
uint8_t Uint8
An unsigned 8-bit integer type.
Definition: SDL_stdinc.h:139
static Uint32 soundlen
static void iteration ( )
static

Definition at line 78 of file testaudiohotplug.c.

References SDL_Event::adevice, SDL_AudioSpec::callback, done, e, fillerup(), SDL_AudioDeviceEvent::iscapture, loop(), NULL, posindex, positions, SDL_AUDIODEVICEADDED, SDL_AUDIODEVICEREMOVED, SDL_CloseAudioDevice, SDL_GetAudioDeviceName, SDL_GetError, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LogError, SDL_OpenAudioDevice, SDL_PauseAudioDevice, SDL_PollEvent, SDL_QUIT, SDL_Event::type, SDL_AudioSpec::userdata, and SDL_AudioDeviceEvent::which.

Referenced by main(), and video_getSetWindowData().

79 {
80  SDL_Event e;
82  while (SDL_PollEvent(&e)) {
83  if (e.type == SDL_QUIT) {
84  done = 1;
85  } else if (e.type == SDL_AUDIODEVICEADDED) {
86  const char *name = SDL_GetAudioDeviceName(e.adevice.which, 0);
87  SDL_Log("New %s audio device: %s\n", e.adevice.iscapture ? "capture" : "output", name);
88  if (!e.adevice.iscapture) {
89  positions[posindex] = 0;
92  dev = SDL_OpenAudioDevice(name, 0, &spec, NULL, 0);
93  if (!dev) {
94  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open '%s': %s\n", name, SDL_GetError());
95  } else {
96  SDL_Log("Opened '%s' as %u\n", name, (unsigned int) dev);
97  SDL_PauseAudioDevice(dev, 0);
98  }
99  }
100  } else if (e.type == SDL_AUDIODEVICEREMOVED) {
101  dev = (SDL_AudioDeviceID) e.adevice.which;
102  SDL_Log("%s device %u removed.\n", e.adevice.iscapture ? "capture" : "output", (unsigned int) dev);
104  }
105  }
106 }
#define SDL_PollEvent
#define SDL_GetError
#define SDL_CloseAudioDevice
#define SDL_OpenAudioDevice
static SDL_AudioSpec spec
SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char int SDL_PRINTF_FORMAT_STRING const char const char SDL_SCANF_FORMAT_STRING const char return SDL_ThreadFunction const char void return Uint32 return Uint32 SDL_AssertionHandler void SDL_SpinLock SDL_atomic_t int int return SDL_atomic_t return void void void return void return int return SDL_AudioSpec SDL_AudioSpec return int int return return int SDL_RWops int SDL_AudioSpec Uint8 Uint32 * e
GLuint const GLchar * name
#define SDL_LogError
#define SDL_GetAudioDeviceName
#define SDL_Log
static int posindex
static Uint32 positions[64]
SDL_AudioCallback callback
Definition: SDL_audio.h:177
#define NULL
Definition: begin_code.h:143
SDL_AudioDeviceEvent adevice
Definition: SDL_events.h:540
Uint32 SDL_AudioDeviceID
Definition: SDL_audio.h:303
void fillerup(void *_pos, Uint8 *stream, int len)
void * userdata
Definition: SDL_audio.h:178
General event structure.
Definition: SDL_events.h:521
static int done
Uint32 type
Definition: SDL_events.h:523
#define SDL_PauseAudioDevice
int main ( int  argc,
char *  argv[] 
)

Definition at line 120 of file testaudiohotplug.c.

References done, sort_controllers::filename, i, iteration(), loop(), NULL, poked(), quit(), SDL_CreateWindow, SDL_Delay, SDL_FreeWAV, SDL_GetAudioDriver, SDL_GetCurrentAudioDriver, SDL_GetError, SDL_GetNumAudioDrivers, SDL_Init, SDL_INIT_AUDIO, SDL_INIT_VIDEO, SDL_LoadWAV, SDL_Log, SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO, SDL_LogError, SDL_LogSetPriority, SDL_MinimizeWindow, SDL_Quit, SDL_strlcpy, SDL_WINDOWPOS_UNDEFINED, sound, and soundlen.

121 {
122  int i;
123  char filename[4096];
124 
125  /* Enable standard application logging */
127 
128  /* Load the SDL library */
130  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
131  return (1);
132  }
133 
134  /* Some targets (Mac CoreAudio) need an event queue for audio hotplug, so make and immediately hide a window. */
136 
137  if (argc > 1) {
138  SDL_strlcpy(filename, argv[1], sizeof(filename));
139  } else {
140  SDL_strlcpy(filename, "sample.wav", sizeof(filename));
141  }
142  /* Load the wave file into memory */
143  if (SDL_LoadWAV(filename, &spec, &sound, &soundlen) == NULL) {
144  SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
145  quit(1);
146  }
147 
148 #if HAVE_SIGNAL_H
149  /* Set the signals */
150 #ifdef SIGHUP
151  signal(SIGHUP, poked);
152 #endif
153  signal(SIGINT, poked);
154 #ifdef SIGQUIT
155  signal(SIGQUIT, poked);
156 #endif
157  signal(SIGTERM, poked);
158 #endif /* HAVE_SIGNAL_H */
159 
160  /* Show the list of available drivers */
161  SDL_Log("Available audio drivers:");
162  for (i = 0; i < SDL_GetNumAudioDrivers(); ++i) {
163  SDL_Log("%i: %s", i, SDL_GetAudioDriver(i));
164  }
165 
166  SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
167 
168 #ifdef __EMSCRIPTEN__
169  emscripten_set_main_loop(loop, 0, 1);
170 #else
171  while (!done) {
172  SDL_Delay(100);
173  iteration();
174  }
175 #endif
176 
177  /* Clean up on signal */
179  SDL_Quit();
180  return (0);
181 }
#define SDL_GetNumAudioDrivers
#define SDL_strlcpy
void loop()
Definition: checkkeys.c:152
#define SDL_GetError
static SDL_AudioSpec spec
void poked(int sig)
#define SDL_FreeWAV
#define SDL_CreateWindow
#define SDL_WINDOWPOS_UNDEFINED
Definition: SDL_video.h:120
#define SDL_MinimizeWindow
static void quit(int rc)
static void iteration()
#define SDL_LogError
static Uint8 * sound
#define SDL_Log
#define SDL_Quit
#define SDL_LoadWAV(file, spec, audio_buf, audio_len)
Definition: SDL_audio.h:424
#define SDL_GetAudioDriver
static Uint32 soundlen
#define SDL_Delay
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
#define SDL_LogSetPriority
#define SDL_GetCurrentAudioDriver
#define NULL
Definition: begin_code.h:143
#define SDL_INIT_AUDIO
Definition: SDL.h:76
#define SDL_Init
static int done
#define SDL_INIT_VIDEO
Definition: SDL.h:77
void poked ( int  sig)

Definition at line 72 of file testaudiohotplug.c.

References done.

Referenced by main().

73 {
74  done = 1;
75 }
static int done
static void quit ( int  rc)
static

Definition at line 39 of file testaudiohotplug.c.

References SDL_Quit, and SDLCALL.

Referenced by main().

40 {
41  SDL_Quit();
42  exit(rc);
43 }
#define SDL_Quit

Variable Documentation

int done = 0
static

Definition at line 70 of file testaudiohotplug.c.

Referenced by iteration(), main(), and poked().

int posindex = 0
static

Definition at line 34 of file testaudiohotplug.c.

Referenced by iteration().

Uint32 positions[64]
static

Definition at line 35 of file testaudiohotplug.c.

Referenced by iteration().

Uint8* sound = NULL
static

Definition at line 31 of file testaudiohotplug.c.

Referenced by fillerup(), and main().

Uint32 soundlen = 0
static

Definition at line 32 of file testaudiohotplug.c.

Referenced by fillerup(), and main().

SDL_AudioSpec spec
static

Definition at line 30 of file testaudiohotplug.c.