48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/*
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* Copyright (c) 2017 Digi International Inc.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <alsa/asoundlib.h>
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int main(int argc, char *argv[])
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{
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int len, ret = EXIT_SUCCESS;
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snd_pcm_t *handle;
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char *device;
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if (argc < 2) {
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printf("Usage: %s [CARD NUMBER]\n", argv[0]);
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return EXIT_FAILURE;
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}
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len = strlen("hw:") + strlen(argv[1]) + 1;
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device = calloc(1, len);
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snprintf(device, len, "hw:%s", argv[1]);
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/* Open the PCM-device in playback mode */
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if (snd_pcm_open(&handle, device, SND_PCM_STREAM_PLAYBACK, 0) < 0) {
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printf("Could't open PCM '%s'\n", device);
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ret = EXIT_FAILURE;
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} else {
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printf("Device %s opened successfully\n", device);
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snd_pcm_close(handle);
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}
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free(device);
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return ret;
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}
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