SDL

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/*
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  Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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  This software is provided 'as-is', without any express or implied
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  warranty.  In no event will the authors be held liable for any damages
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  arising from the use of this software.
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  Permission is granted to anyone to use this software for any purpose,
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  including commercial applications, and to alter it and redistribute it
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  freely.
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*/
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#include <SDL3/SDL.h>
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#include <SDL3/SDL_main.h>
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#include <SDL3/SDL_test.h>
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static void
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print_devices(SDL_bool recording)
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{
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    SDL_AudioSpec spec;
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    const char *typestr = (recording ? "recording" : "playback");
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    int n = 0;
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    int frames;
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    SDL_AudioDeviceID *devices = recording ? SDL_GetAudioRecordingDevices(&n) : SDL_GetAudioPlaybackDevices(&n);
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    if (!devices) {
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        SDL_Log("  Driver failed to report %s devices: %s\n\n", typestr, SDL_GetError());
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    } else if (n == 0) {
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        SDL_Log("  No %s devices found.\n\n", typestr);
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    } else {
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        int i;
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        SDL_Log("Found %d %s device%s:\n", n, typestr, n != 1 ? "s" : "");
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        for (i = 0; i < n; i++) {
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            const char *name = SDL_GetAudioDeviceName(devices[i]);
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            if (name) {
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                SDL_Log("  %d: %s\n", i, name);
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            } else {
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                SDL_Log("  %d Error: %s\n", i, SDL_GetError());
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            }
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            if (SDL_GetAudioDeviceFormat(devices[i], &spec, &frames) == 0) {
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                SDL_Log("     Sample Rate: %d\n", spec.freq);
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                SDL_Log("     Channels: %d\n", spec.channels);
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                SDL_Log("     SDL_AudioFormat: %X\n", spec.format);
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                SDL_Log("     Buffer Size: %d frames\n", frames);
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            }
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        }
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        SDL_Log("\n");
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    }
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    SDL_free(devices);
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}
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int main(int argc, char **argv)
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{
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    SDL_AudioSpec spec;
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    int i;
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    int n;
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    int frames;
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    SDLTest_CommonState *state;
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    /* Initialize test framework */
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    state = SDLTest_CommonCreateState(argv, 0);
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    if (!state) {
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        return 1;
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    }
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    /* Enable standard application logging */
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    SDL_SetLogPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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    /* Parse commandline */
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    if (!SDLTest_CommonDefaultArgs(state, argc, argv)) {
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        return 1;
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    }
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    /* Load the SDL library */
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    if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
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        return 1;
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    }
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    /* Print available audio drivers */
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    n = SDL_GetNumAudioDrivers();
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    if (n == 0) {
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        SDL_Log("No built-in audio drivers\n\n");
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    } else {
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        SDL_Log("Built-in audio drivers:\n");
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        for (i = 0; i < n; ++i) {
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            SDL_Log("  %d: %s\n", i, SDL_GetAudioDriver(i));
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        }
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        SDL_Log("Select a driver with the SDL_AUDIO_DRIVER environment variable.\n");
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    }
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    SDL_Log("Using audio driver: %s\n\n", SDL_GetCurrentAudioDriver());
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    print_devices(SDL_FALSE);
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    print_devices(SDL_TRUE);
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    if (SDL_GetAudioDeviceFormat(SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK, &spec, &frames) < 0) {
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        SDL_Log("Error when calling SDL_GetAudioDeviceFormat(default playback): %s\n", SDL_GetError());
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    } else {
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        SDL_Log("Default Playback Device:\n");
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        SDL_Log("Sample Rate: %d\n", spec.freq);
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        SDL_Log("Channels: %d\n", spec.channels);
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        SDL_Log("SDL_AudioFormat: %X\n", spec.format);
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        SDL_Log("Buffer Size: %d frames\n", frames);
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    }
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    if (SDL_GetAudioDeviceFormat(SDL_AUDIO_DEVICE_DEFAULT_RECORDING, &spec, &frames) < 0) {
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        SDL_Log("Error when calling SDL_GetAudioDeviceFormat(default recording): %s\n", SDL_GetError());
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    } else {
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        SDL_Log("Default Recording Device:\n");
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        SDL_Log("Sample Rate: %d\n", spec.freq);
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        SDL_Log("Channels: %d\n", spec.channels);
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        SDL_Log("SDL_AudioFormat: %X\n", spec.format);
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        SDL_Log("Buffer Size: %d frames\n", frames);
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    }
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    SDL_Quit();
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    SDLTest_CommonDestroyState(state);
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    return 0;
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}
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