/* gcc -W -Wall -o alsa-rate alsa-rate.c -lasound */

#include <stdio.h>
#include <alsa/asoundlib.h>

int main(int argc, char *argv[])
{
        char *device;
        snd_pcm_t *handle;
        snd_pcm_hw_params_t *params;
        unsigned int min;
        unsigned int max;
        int dir;
        int err;

        device = argc > 1 ? argv[1] : "hw:0,0";

        err = snd_pcm_open(&handle, device, SND_PCM_STREAM_PLAYBACK, 0);
        if (err < 0) {
                fprintf(stderr, "snd_pcm_open: %s\n", snd_strerror(err));
                return err;
        }
        err = snd_pcm_hw_params_malloc(&params);
        if (err < 0) {
                fprintf(stderr, "snd_pcm_hw_params_alloc: %s\n",
                        snd_strerror(err));
                return err;
        }
        err = snd_pcm_hw_params_any(handle, params);
        if (err < 0) {
                fprintf(stderr, "snd_pcm_hw_params_any: %s\n",
                        snd_strerror(err));
                return err;
        }
        err = snd_pcm_close(handle);
        if (err < 0) {
                fprintf(stderr, "snd_pcm_close: %s\n", snd_strerror(err));
                return err;
        }
        err = snd_pcm_hw_params_get_rate_min(params, &min, &dir);
        if (err < 0) {
                fprintf(stderr, "snd_pcm_hw_params_get_rate_min: %s\n",
                        snd_strerror(err));
                return err;
        }
        err = snd_pcm_hw_params_get_rate_max(params, &max, &dir);
        if (err < 0) {
                fprintf(stderr, "snd_pcm_hw_params_get_rate_max: %s\n",
                        snd_strerror(err));
                return err;
        }
        snd_pcm_hw_params_free(params);

        printf("supported sample rates for %s : min=%u, max=%u\n", device, min, max);
        return 0;
}