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104 lines
2.2 KiB
104 lines
2.2 KiB
/*
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** Copyright 2010, The Android Open-Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ctype.h>
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#include "alsa_audio.h"
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struct mixer_ctl *get_ctl(struct mixer *mixer, char *name)
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{
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char *p;
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unsigned idx = 0;
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if (isdigit(name[0]))
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return mixer_get_nth_control(mixer, atoi(name) - 1);
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p = strrchr(name, '#');
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if (p) {
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*p++ = 0;
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idx = atoi(p);
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}
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return mixer_get_control(mixer, name, idx);
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}
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int main(int argc, char **argv)
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{
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struct mixer *mixer;
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struct mixer_ctl *ctl;
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int card = 0;
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int r, i, c;
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for (i = 0; i < argc; i++) {
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if ((strncmp(argv[i], "-c", sizeof(argv[i])) == 0) ||
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(strncmp(argv[i], "-card", sizeof(argv[i])) == 0)) {
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i++;
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if (i >= argc) {
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argc -= 1;
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argv += 1;
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break;
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}
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card = atoi(argv[i]);
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argc -= 2;
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argv += 2;
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break;
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}
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}
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printf("Card:%i\n", card);
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mixer = mixer_open(card);
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if (!mixer)
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return -1;
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if (argc == 1) {
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mixer_dump(mixer);
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return 0;
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}
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ctl = get_ctl(mixer, argv[1]);
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argc -= 2;
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argv += 2;
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if (!ctl) {
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printf("can't find control\n");
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return -1;
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}
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if (argc) {
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if (isdigit(argv[0][0]))
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r = mixer_ctl_set_int(ctl, atoi(argv[0]));
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else
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r = mixer_ctl_select(ctl, argv[0]);
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if (r)
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printf("oops: %s\n", strerror(errno));
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}
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mixer_ctl_print(ctl);
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mixer_close(mixer);
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return 0;
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}
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