view test/testaudioinfo.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 17 Oct 2006 09:09:21 +0000
parents 7dc7327cd626
children
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#include "SDL.h"

static void print_devices(int iscapture)
{
    const char *typestr = ((iscapture) ? "capture" : "output");
    int n = SDL_GetNumAudioDevices(iscapture);

    printf("%s devices:\n", typestr);

    if (n == -1)
        printf("  Driver can't detect specific devices.\n\n", typestr);
    else if (n == 0)
        printf("  No %s devices found.\n\n", typestr);
    else
    {
        int i;
        for (i = 0; i < n; i++) {
            printf("  %s\n", SDL_GetAudioDeviceName(i, iscapture));
        }
        printf("\n");
    }
}

int main(int argc, char **argv)
{
    /* Print available audio drivers */
    int n = SDL_GetNumAudioDrivers();
    if (n == 0) {
        printf("No built-in audio drivers\n\n");
    } else {
        int i;
        printf("Built-in audio drivers:\n");
        for (i = 0; i < n; ++i) {
            printf("  %s\n", 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);
    }

    printf("Using audio driver: %s\n\n", SDL_GetCurrentAudioDriver());

    print_devices(0);
    print_devices(1);

    SDL_Quit();
    return 0;
}