mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-05 06:58:24 -05:00
180 lines
4.2 KiB
C
Executable File
180 lines
4.2 KiB
C
Executable File
/*
|
|
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
|
|
|
|
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.
|
|
|
|
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 <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
#include <emscripten/emscripten.h>
|
|
#endif
|
|
|
|
#include "SDL.h"
|
|
|
|
static struct
|
|
{
|
|
SDL_AudioSpec spec;
|
|
Uint8 *sound; /* Pointer to wave data */
|
|
Uint32 soundlen; /* Length of wave data */
|
|
int soundpos; /* Current play position */
|
|
} wave;
|
|
|
|
static SDL_AudioDeviceID device;
|
|
|
|
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
|
|
static void
|
|
quit(int rc)
|
|
{
|
|
SDL_Quit();
|
|
exit(rc);
|
|
}
|
|
|
|
static void
|
|
close_audio()
|
|
{
|
|
if (device != 0) {
|
|
SDL_CloseAudioDevice(device);
|
|
device = 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
open_audio()
|
|
{
|
|
/* Initialize fillerup() variables */
|
|
device = SDL_OpenAudioDevice(NULL, SDL_FALSE, &wave.spec, NULL, 0);
|
|
if (!device) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open audio: %s\n", SDL_GetError());
|
|
SDL_FreeWAV(wave.sound);
|
|
quit(2);
|
|
}
|
|
|
|
|
|
/* Let the audio run */
|
|
SDL_PauseAudioDevice(device, SDL_FALSE);
|
|
}
|
|
|
|
static void reopen_audio()
|
|
{
|
|
close_audio();
|
|
open_audio();
|
|
}
|
|
|
|
|
|
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;
|
|
}
|
|
|
|
static int done = 0;
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
void
|
|
loop()
|
|
{
|
|
if(done || (SDL_GetAudioDeviceStatus(device) != 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|SDL_INIT_EVENTS) < 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;
|
|
|
|
/* 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));
|
|
}
|
|
|
|
SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
|
|
|
|
open_audio();
|
|
|
|
SDL_FlushEvents(SDL_AUDIODEVICEADDED, SDL_AUDIODEVICEREMOVED);
|
|
|
|
#ifdef __EMSCRIPTEN__
|
|
emscripten_set_main_loop(loop, 0, 1);
|
|
#else
|
|
while (!done) {
|
|
SDL_Event event;
|
|
|
|
while (SDL_PollEvent(&event) > 0) {
|
|
if (event.type == SDL_QUIT) {
|
|
done = 1;
|
|
}
|
|
if ((event.type == SDL_AUDIODEVICEADDED && !event.adevice.iscapture) ||
|
|
(event.type == SDL_AUDIODEVICEREMOVED && !event.adevice.iscapture && event.adevice.which == device)) {
|
|
reopen_audio();
|
|
}
|
|
}
|
|
SDL_Delay(100);
|
|
}
|
|
#endif
|
|
|
|
/* Clean up on signal */
|
|
close_audio();
|
|
SDL_FreeWAV(wave.sound);
|
|
SDL_Quit();
|
|
return (0);
|
|
}
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|