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