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https://github.com/Relintai/sdl2_frt.git
synced 2024-12-20 22:16:49 +01:00
Added support to loopwave for hotplugging audio devices
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c1802ef646
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@ -38,6 +38,7 @@ static struct
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int soundpos; /* Current play position */
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} wave;
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static SDL_AudioDeviceID device;
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/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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static void
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@ -47,6 +48,37 @@ quit(int rc)
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exit(rc);
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}
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static void
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close_audio()
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{
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if (device != 0) {
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SDL_CloseAudioDevice(device);
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device = 0;
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}
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}
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static void
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open_audio()
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{
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/* Initialize fillerup() variables */
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device = SDL_OpenAudioDevice(NULL, SDL_FALSE, &wave.spec, NULL, 0);
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if (!device) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open audio: %s\n", SDL_GetError());
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SDL_FreeWAV(wave.sound);
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quit(2);
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}
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/* Let the audio run */
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SDL_PauseAudioDevice(device, SDL_FALSE);
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}
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static void reopen_audio()
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{
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close_audio();
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open_audio();
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}
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void SDLCALL
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fillerup(void *unused, Uint8 * stream, int len)
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@ -82,7 +114,7 @@ poked(int sig)
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void
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loop()
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{
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if(done || (SDL_GetAudioStatus() != SDL_AUDIO_PLAYING))
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if(done || (SDL_GetAudioDeviceStatus(device) != SDL_AUDIO_PLAYING))
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emscripten_cancel_main_loop();
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}
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#endif
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@ -97,7 +129,7 @@ main(int argc, char *argv[])
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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/* Load the SDL library */
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if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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if (SDL_Init(SDL_INIT_AUDIO|SDL_INIT_EVENTS) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
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return (1);
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}
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@ -114,17 +146,6 @@ main(int argc, char *argv[])
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}
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wave.spec.callback = fillerup;
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#if HAVE_SIGNAL_H
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/* Set the signals */
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#ifdef SIGHUP
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signal(SIGHUP, poked);
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#endif
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signal(SIGINT, poked);
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#ifdef SIGQUIT
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signal(SIGQUIT, poked);
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#endif
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signal(SIGTERM, poked);
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#endif /* HAVE_SIGNAL_H */
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/* Show the list of available drivers */
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SDL_Log("Available audio drivers:");
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@ -132,27 +153,33 @@ main(int argc, char *argv[])
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SDL_Log("%i: %s", i, SDL_GetAudioDriver(i));
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}
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/* Initialize fillerup() variables */
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if (SDL_OpenAudio(&wave.spec, NULL) < 0) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open audio: %s\n", SDL_GetError());
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SDL_FreeWAV(wave.sound);
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quit(2);
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}
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SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
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/* Let the audio run */
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SDL_PauseAudio(0);
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open_audio();
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SDL_FlushEvents(SDL_AUDIODEVICEADDED, SDL_AUDIODEVICEREMOVED);
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#ifdef __EMSCRIPTEN__
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emscripten_set_main_loop(loop, 0, 1);
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#else
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while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING))
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SDL_Delay(1000);
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while (!done) {
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SDL_Event event;
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while (SDL_PollEvent(&event) > 0) {
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if (event.type == SDL_QUIT) {
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done = 1;
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}
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if ((event.type == SDL_AUDIODEVICEADDED && !event.adevice.iscapture) ||
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(event.type == SDL_AUDIODEVICEREMOVED && !event.adevice.iscapture && event.adevice.which == device)) {
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reopen_audio();
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}
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}
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SDL_Delay(100);
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}
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#endif
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/* Clean up on signal */
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SDL_CloseAudio();
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close_audio();
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SDL_FreeWAV(wave.sound);
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SDL_Quit();
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return (0);
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