Mercurial > sdl-ios-xcode
view test/loopwave.c @ 1013:a649064a3215
Date: Tue, 14 Dec 2004 12:08:30 +0100
From: Marcin Konicki
Subject: Re: [SDL] SDL 1.2.8 Prerelease
I'm sending small fix for BeOS, which prevents filling up SDL's message
queue too fast.
Without it, SDL receives "key down" messages from BeOS code, for each key
repeat (BeOS handles key repeats itself, and application can check if
received "key down" message from BeOS is first time key down, or if it's
repeat, and which repeat it is). Since there is no way for "sdl driver" to
turn off "default" SDL's key-repeat mechanism, they were working both at
the same time (and queue could be filled up very fast).
So this patch removes handling "key down" message from BeOS if it's
key_repeat "type".
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 14 Dec 2004 18:23:27 +0000 |
parents | 74212992fb08 |
children | be9c9c8f6d53 |
line wrap: on
line source
/* Program to load a wave file and loop playing it using SDL sound */ /* loopwaves.c is much more robust in handling WAVE files -- This is only for simple WAVEs */ #include <stdio.h> #include <stdlib.h> #include <signal.h> #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 */ } wave; void 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_MixAudio(stream, waveptr, waveleft, SDL_MIX_MAXVOLUME); stream += waveleft; len -= waveleft; waveptr = wave.sound; waveleft = wave.soundlen; wave.soundpos = 0; } SDL_MixAudio(stream, waveptr, len, SDL_MIX_MAXVOLUME); wave.soundpos += len; } static int done = 0; void poked(int sig) { done = 1; } int main(int argc, char *argv[]) { char name[32]; /* Load the SDL library */ if ( SDL_Init(SDL_INIT_AUDIO) < 0 ) { fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); exit(1); } atexit(SDL_Quit); if ( argv[1] == NULL ) { fprintf(stderr, "Usage: %s <wavefile>\n", argv[0]); exit(1); } /* 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()); exit(1); } wave.spec.callback = fillerup; /* Set the signals */ #ifdef SIGHUP signal(SIGHUP, poked); #endif signal(SIGINT, poked); #ifdef SIGQUIT signal(SIGQUIT, poked); #endif signal(SIGTERM, poked); /* Initialize fillerup() variables */ if ( SDL_OpenAudio(&wave.spec, NULL) < 0 ) { fprintf(stderr, "Couldn't open audio: %s\n", SDL_GetError()); SDL_FreeWAV(wave.sound); exit(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); return(0); }