Mercurial > sdl-ios-xcode
view test/testmultiaudio.c @ 2355:eec14ed2bb18 gsoc2008_iphone
These files contain the events related functions for the UIKit video driver. Right now this is just UIKit_PumpEvents.
author | Holmes Futrell <hfutrell@umail.ucsb.edu> |
---|---|
date | Thu, 17 Jul 2008 22:48:23 +0000 |
parents | 9fcde304c7b6 |
children | eec7adc3d1c5 |
line wrap: on
line source
#include "SDL.h" static SDL_AudioSpec spec; static Uint8 *sound = NULL; /* Pointer to wave data */ static Uint32 soundlen = 0; /* Length of wave data */ typedef struct { SDL_AudioDeviceID dev; int soundpos; volatile int done; } callback_data; void SDLCALL play_through_once(void *arg, Uint8 * stream, int len) { callback_data *cbd = (callback_data *) arg; Uint8 *waveptr = sound + cbd->soundpos; int waveleft = soundlen - cbd->soundpos; int cpy = len; if (cpy > waveleft) cpy = waveleft; SDL_memcpy(stream, waveptr, cpy); len -= cpy; cbd->soundpos += cpy; if (len > 0) { stream += cpy; SDL_memset(stream, spec.silence, len); cbd->done++; } } static void test_multi_audio(int devcount) { callback_data cbd[64]; int keep_going = 1; int i; if (devcount > 64) { fprintf(stderr, "Too many devices (%d), clamping to 64...\n", devcount); devcount = 64; } spec.callback = play_through_once; for (i = 0; i < devcount; i++) { const char *devname = SDL_GetAudioDeviceName(i, 0); printf("playing on device #%d: ('%s')...", i, devname); fflush(stdout); SDL_memset(&cbd[0], '\0', sizeof(callback_data)); spec.userdata = &cbd[0]; cbd[0].dev = SDL_OpenAudioDevice(devname, 0, &spec, NULL); if (cbd[0].dev == 0) { printf("Open device failed: %s\n", SDL_GetError()); } else { SDL_PauseAudioDevice(cbd[0].dev, 0); while (!cbd[0].done) SDL_Delay(100); SDL_PauseAudioDevice(cbd[0].dev, 1); printf("done.\n"); SDL_CloseAudioDevice(cbd[0].dev); } } SDL_memset(cbd, '\0', sizeof(cbd)); printf("playing on all devices...\n"); for (i = 0; i < devcount; i++) { const char *devname = SDL_GetAudioDeviceName(i, 0); spec.userdata = &cbd[i]; cbd[i].dev = SDL_OpenAudioDevice(devname, 0, &spec, NULL); if (cbd[i].dev == 0) { printf("Open device %d failed: %s\n", i, SDL_GetError()); } } for (i = 0; i < devcount; i++) { if (cbd[i].dev) { SDL_PauseAudioDevice(cbd[i].dev, 0); } } while (keep_going) { keep_going = 0; for (i = 0; i < devcount; i++) { if ((cbd[i].dev) && (!cbd[i].done)) { keep_going = 1; } } SDL_Delay(100); } for (i = 0; i < devcount; i++) { if (cbd[i].dev) { SDL_PauseAudioDevice(cbd[i].dev, 1); SDL_CloseAudioDevice(cbd[i].dev); } } printf("All done!\n"); } int main(int argc, char **argv) { int devcount = 0; /* Load the SDL library */ if (SDL_Init(SDL_INIT_AUDIO) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return (1); } printf("Using audio driver: %s\n", SDL_GetCurrentAudioDriver()); devcount = SDL_GetNumAudioDevices(0); if (devcount < 1) { fprintf(stderr, "Don't see any specific audio devices!\n"); } else { if (argv[1] == NULL) { argv[1] = "sample.wav"; } /* Load the wave file into memory */ if (SDL_LoadWAV(argv[1], &spec, &sound, &soundlen) == NULL) { fprintf(stderr, "Couldn't load %s: %s\n", argv[1], SDL_GetError()); } else { test_multi_audio(devcount); SDL_FreeWAV(sound); } } SDL_Quit(); return 0; }