+/*
+ Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-/* Program to load a wave file and loop playing it using SDL sound */
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
-/* loopwaves.c is much more robust in handling WAVE files --
- This is only for simple WAVEs
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely.
+*/
+
+/* Program to load a wave file and loop playing it using SDL audio */
+
+/* loopwaves.c is much more robust in handling WAVE files --
+ This is only for simple WAVEs
*/
#include "SDL_config.h"
#include <signal.h>
#endif
+#ifdef __EMSCRIPTEN__
+#include <emscripten/emscripten.h>
+#endif
+
#include "SDL.h"
-#include "SDL_audio.h"
-struct {
- SDL_AudioSpec spec;
- Uint8 *sound; /* Pointer to wave data */
- Uint32 soundlen; /* Length of wave data */
- int soundpos; /* Current play position */
+struct
+{
+ SDL_AudioSpec spec;
+ Uint8 *sound; /* Pointer to wave data */
+ Uint32 soundlen; /* Length of wave data */
+ int soundpos; /* Current play position */
} wave;
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
-static void quit(int rc)
+static void
+quit(int rc)
{
- SDL_Quit();
- exit(rc);
+ SDL_Quit();
+ exit(rc);
}
-void SDLCALL fillerup(void *unused, Uint8 *stream, int len)
+void SDLCALL
+fillerup(void *unused, Uint8 * stream, int len)
{
- Uint8 *waveptr;
- int waveleft;
-
- /* Set up the pointers */
- waveptr = wave.sound + wave.soundpos;
- waveleft = wave.soundlen - wave.soundpos;
-
- /* Go! */
- while ( waveleft <= len ) {
- SDL_memcpy(stream, waveptr, waveleft);
- stream += waveleft;
- len -= waveleft;
- waveptr = wave.sound;
- waveleft = wave.soundlen;
- wave.soundpos = 0;
- }
- SDL_memcpy(stream, waveptr, len);
- wave.soundpos += len;
+ Uint8 *waveptr;
+ int waveleft;
+
+ /* Set up the pointers */
+ waveptr = wave.sound + wave.soundpos;
+ waveleft = wave.soundlen - wave.soundpos;
+
+ /* Go! */
+ while (waveleft <= len) {
+ SDL_memcpy(stream, waveptr, waveleft);
+ stream += waveleft;
+ len -= waveleft;
+ waveptr = wave.sound;
+ waveleft = wave.soundlen;
+ wave.soundpos = 0;
+ }
+ SDL_memcpy(stream, waveptr, len);
+ wave.soundpos += len;
}
static int done = 0;
-void poked(int sig)
+void
+poked(int sig)
{
- done = 1;
+ done = 1;
}
-int main(int argc, char *argv[])
+#ifdef __EMSCRIPTEN__
+void
+loop()
{
- char name[32];
-
- /* Load the SDL library */
- if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) {
- fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
- return(1);
- }
- if ( argv[1] == NULL ) {
- argv[1] = "sample.wav";
- }
- /* Load the wave file into memory */
- if ( SDL_LoadWAV(argv[1],
- &wave.spec, &wave.sound, &wave.soundlen) == NULL ) {
- fprintf(stderr, "Couldn't load %s: %s\n",
- argv[1], SDL_GetError());
- quit(1);
- }
-
- wave.spec.callback = fillerup;
+ if(done || (SDL_GetAudioStatus() != SDL_AUDIO_PLAYING))
+ emscripten_cancel_main_loop();
+}
+#endif
+
+int
+main(int argc, char *argv[])
+{
+ int i;
+ char filename[4096];
+
+ /* Enable standard application logging */
+ SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
+
+ /* Load the SDL library */
+ if (SDL_Init(SDL_INIT_AUDIO) < 0) {
+ SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
+ return (1);
+ }
+
+ if (argc > 1) {
+ SDL_strlcpy(filename, argv[1], sizeof(filename));
+ } else {
+ SDL_strlcpy(filename, "sample.wav", sizeof(filename));
+ }
+ /* Load the wave file into memory */
+ if (SDL_LoadWAV(filename, &wave.spec, &wave.sound, &wave.soundlen) == NULL) {
+ SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
+ quit(1);
+ }
+
+ wave.spec.callback = fillerup;
#if HAVE_SIGNAL_H
- /* Set the signals */
+ /* Set the signals */
#ifdef SIGHUP
- signal(SIGHUP, poked);
+ signal(SIGHUP, poked);
#endif
- signal(SIGINT, poked);
+ signal(SIGINT, poked);
#ifdef SIGQUIT
- signal(SIGQUIT, poked);
+ signal(SIGQUIT, poked);
#endif
- signal(SIGTERM, poked);
+ signal(SIGTERM, poked);
#endif /* HAVE_SIGNAL_H */
- /* Initialize fillerup() variables */
- if ( SDL_OpenAudio(&wave.spec, NULL) < 0 ) {
- fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError());
- SDL_FreeWAV(wave.sound);
- quit(2);
- }
- SDL_PauseAudio(0);
-
- /* Let the audio run */
- printf("Using audio driver: %s\n", SDL_AudioDriverName(name, 32));
- while ( ! done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING) )
- SDL_Delay(1000);
-
- /* Clean up on signal */
- SDL_CloseAudio();
- SDL_FreeWAV(wave.sound);
- SDL_Quit();
- return(0);
+ /* Show the list of available drivers */
+ SDL_Log("Available audio drivers:");
+ for (i = 0; i < SDL_GetNumAudioDrivers(); ++i) {
+ SDL_Log("%i: %s", i, SDL_GetAudioDriver(i));
+ }
+
+ /* Initialize fillerup() variables */
+ if (SDL_OpenAudio(&wave.spec, NULL) < 0) {
+ SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open audio: %s\n", SDL_GetError());
+ SDL_FreeWAV(wave.sound);
+ quit(2);
+ }
+
+ SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
+
+ /* Let the audio run */
+ SDL_PauseAudio(0);
+
+#ifdef __EMSCRIPTEN__
+ emscripten_set_main_loop(loop, 0, 1);
+#else
+ while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING))
+ SDL_Delay(1000);
+#endif
+
+ /* Clean up on signal */
+ SDL_CloseAudio();
+ SDL_FreeWAV(wave.sound);
+ SDL_Quit();
+ return (0);
}
+
+/* vi: set ts=4 sw=4 expandtab: */
projects / platform / upstream / SDL.git / blobdiff