mirror of
https://github.com/Relintai/sdl2_frt.git
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0e45984fa0
The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().
162 lines
3.7 KiB
C
162 lines
3.7 KiB
C
/*
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Copyright (C) 1997-2015 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely.
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*/
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/* Program to load a wave file and loop playing it using SDL sound */
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/* loopwaves.c is much more robust in handling WAVE files --
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This is only for simple WAVEs
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*/
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#include "SDL_config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#if HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef __EMSCRIPTEN__
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#include <emscripten/emscripten.h>
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#endif
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#include "SDL.h"
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struct
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{
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SDL_AudioSpec spec;
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Uint8 *sound; /* Pointer to wave data */
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Uint32 soundlen; /* Length of wave data */
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int soundpos; /* Current play position */
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} wave;
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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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quit(int rc)
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{
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SDL_Quit();
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exit(rc);
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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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{
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Uint8 *waveptr;
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int waveleft;
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/* Set up the pointers */
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waveptr = wave.sound + wave.soundpos;
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waveleft = wave.soundlen - wave.soundpos;
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/* Go! */
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while (waveleft <= len) {
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SDL_memcpy(stream, waveptr, waveleft);
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stream += waveleft;
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len -= waveleft;
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waveptr = wave.sound;
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waveleft = wave.soundlen;
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wave.soundpos = 0;
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}
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SDL_memcpy(stream, waveptr, len);
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wave.soundpos += len;
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}
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static int done = 0;
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void
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poked(int sig)
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{
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done = 1;
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}
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#ifdef __EMSCRIPTEN__
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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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emscripten_cancel_main_loop();
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}
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#endif
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int
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main(int argc, char *argv[])
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{
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int i;
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char filename[4096];
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/* Enable standard application logging */
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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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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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if (argc > 1) {
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SDL_strlcpy(filename, argv[1], sizeof(filename));
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} else {
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SDL_strlcpy(filename, "sample.wav", sizeof(filename));
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}
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/* Load the wave file into memory */
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if (SDL_LoadWAV(filename, &wave.spec, &wave.sound, &wave.soundlen) == NULL) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s\n", filename, SDL_GetError());
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quit(1);
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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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for (i = 0; i < SDL_GetNumAudioDrivers(); ++i) {
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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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#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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#endif
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/* Clean up on signal */
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SDL_CloseAudio();
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SDL_FreeWAV(wave.sound);
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SDL_Quit();
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return (0);
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}
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/* vi: set ts=4 sw=4 expandtab: */
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