Mercurial > sdl-ios-xcode
view test/loopwave.c @ 1675:d33dcfc3fde7 SDL-1.3
Overlay functions are being replaced by YUV textures.
If the driver doesn't support YUV textures, they can be emulated by backing
the texture with an RGB texture and using the software conversion routines.
Note that it doesn't make sense to lock a portion of a YV12 texture, since
you'd need to return three pixel pointers and pitch values instead of the
one that's available through the API. I'm guessing that's one of the reasons
DirectX 9 doesn't support this format at all.
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 11 Jun 2006 07:30:16 +0000 |
parents | 4da1ee79c9af |
children |
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/* 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 "SDL_config.h" #include <stdio.h> #include <stdlib.h> #if HAVE_SIGNAL_H #include <signal.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 */ } wave; /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ static void quit(int rc) { SDL_Quit(); exit(rc); } 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_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[]) { int i, n; /* Print available audio drivers */ n = SDL_GetNumAudioDrivers(); if (n == 0) { printf("No built-in audio drivers\n"); } else { printf("Built-in audio drivers:"); for (i = 0; i < n; ++i) { if (i > 0) { printf(","); } printf(" %s", SDL_GetAudioDriver(i)); } printf("\n"); } /* 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 HAVE_SIGNAL_H /* Set the signals */ #ifdef SIGHUP signal(SIGHUP, poked); #endif signal(SIGINT, poked); #ifdef SIGQUIT signal(SIGQUIT, poked); #endif 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_GetCurrentAudioDriver()); while (!done && (SDL_GetAudioStatus() == SDL_AUDIO_PLAYING)) SDL_Delay(1000); /* Clean up on signal */ SDL_CloseAudio(); SDL_FreeWAV(wave.sound); SDL_Quit(); return (0); }