| /* tinymix.c |
| ** |
| ** Copyright 2011, The Android Open Source Project |
| ** |
| ** Redistribution and use in source and binary forms, with or without |
| ** modification, are permitted provided that the following conditions are met: |
| ** * Redistributions of source code must retain the above copyright |
| ** notice, this list of conditions and the following disclaimer. |
| ** * Redistributions in binary form must reproduce the above copyright |
| ** notice, this list of conditions and the following disclaimer in the |
| ** documentation and/or other materials provided with the distribution. |
| ** * Neither the name of The Android Open Source Project nor the names of |
| ** its contributors may be used to endorse or promote products derived |
| ** from this software without specific prior written permission. |
| ** |
| ** THIS SOFTWARE IS PROVIDED BY The Android Open Source Project ``AS IS'' AND |
| ** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| ** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ** ARE DISCLAIMED. IN NO EVENT SHALL The Android Open Source Project BE LIABLE |
| ** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| ** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| ** SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
| ** CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| ** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| ** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| ** DAMAGE. |
| */ |
| |
| #include <tinyalsa/asoundlib.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| |
| static void tinymix_list_controls(struct mixer *mixer); |
| static void tinymix_detail_control(struct mixer *mixer, unsigned int id, |
| int print_all); |
| static void tinymix_set_value(struct mixer *mixer, unsigned int id, |
| char *value); |
| static void tinymix_print_enum(struct mixer_ctl *ctl, int print_all); |
| |
| int main(int argc, char **argv) |
| { |
| struct mixer *mixer; |
| |
| mixer = mixer_open(0); |
| if (!mixer) { |
| fprintf(stderr, "Failed to open mixer\n"); |
| return EXIT_FAILURE; |
| } |
| |
| if (argc == 1) |
| tinymix_list_controls(mixer); |
| else if (argc == 2) |
| tinymix_detail_control(mixer, atoi(argv[1]), 1); |
| else if (argc == 3) |
| tinymix_set_value(mixer, atoi(argv[1]), argv[2]); |
| else |
| printf("Usage: tinymix [control id] [value to set]\n"); |
| |
| mixer_close(mixer); |
| |
| return 0; |
| } |
| |
| static void tinymix_list_controls(struct mixer *mixer) |
| { |
| struct mixer_ctl *ctl; |
| const char *type; |
| unsigned int num_ctls, num_values; |
| char buffer[256]; |
| unsigned int i; |
| |
| num_ctls = mixer_get_num_ctls(mixer); |
| |
| printf("Number of controls: %d\n", num_ctls); |
| |
| printf("ctl\ttype\tnum\t%-40s value\n", "name"); |
| for (i = 0; i < num_ctls; i++) { |
| ctl = mixer_get_ctl(mixer, i); |
| |
| mixer_ctl_get_name(ctl, buffer, sizeof(buffer)); |
| type = mixer_ctl_get_type_string(ctl); |
| num_values = mixer_ctl_get_num_values(ctl); |
| printf("%d\t%s\t%d\t%-40s", i, type, num_values, buffer); |
| tinymix_detail_control(mixer, i, 0); |
| } |
| } |
| |
| static void tinymix_print_enum(struct mixer_ctl *ctl, int print_all) |
| { |
| unsigned int num_enums; |
| char buffer[256]; |
| unsigned int i; |
| |
| num_enums = mixer_ctl_get_num_enums(ctl); |
| |
| for (i = 0; i < num_enums; i++) { |
| mixer_ctl_get_enum_string(ctl, i, buffer, sizeof(buffer)); |
| if (print_all) |
| printf("\t%s%s", mixer_ctl_get_value(ctl, 0) == (int)i ? ">" : "", |
| buffer); |
| else if (mixer_ctl_get_value(ctl, 0) == (int)i) |
| printf(" %-s", buffer); |
| } |
| } |
| |
| static void tinymix_detail_control(struct mixer *mixer, unsigned int id, |
| int print_all) |
| { |
| struct mixer_ctl *ctl; |
| enum mixer_ctl_type type; |
| unsigned int num_values; |
| char buffer[256]; |
| unsigned int i; |
| int min, max; |
| |
| if (id >= mixer_get_num_ctls(mixer)) { |
| fprintf(stderr, "Invalid mixer control\n"); |
| return; |
| } |
| |
| ctl = mixer_get_ctl(mixer, id); |
| |
| mixer_ctl_get_name(ctl, buffer, sizeof(buffer)); |
| type = mixer_ctl_get_type(ctl); |
| num_values = mixer_ctl_get_num_values(ctl); |
| |
| if (print_all) |
| printf("%s:", buffer); |
| |
| for (i = 0; i < num_values; i++) { |
| switch (type) |
| { |
| case MIXER_CTL_TYPE_INT: |
| printf(" %d", mixer_ctl_get_value(ctl, i)); |
| break; |
| case MIXER_CTL_TYPE_BOOL: |
| printf(" %s", mixer_ctl_get_value(ctl, i) ? "On" : "Off"); |
| break; |
| case MIXER_CTL_TYPE_ENUM: |
| tinymix_print_enum(ctl, print_all); |
| break; |
| case MIXER_CTL_TYPE_BYTE: |
| printf(" 0x%02x", mixer_ctl_get_value(ctl, i)); |
| break; |
| default: |
| printf(" unknown"); |
| break; |
| }; |
| } |
| |
| if (print_all) { |
| if (type == MIXER_CTL_TYPE_INT) { |
| min = mixer_ctl_get_range_min(ctl); |
| max = mixer_ctl_get_range_max(ctl); |
| printf(" (range %d->%d)", min, max); |
| } |
| } |
| printf("\n"); |
| } |
| |
| static void tinymix_set_value(struct mixer *mixer, unsigned int id, |
| char *string) |
| { |
| struct mixer_ctl *ctl; |
| enum mixer_ctl_type type; |
| unsigned int num_values; |
| unsigned int i; |
| |
| ctl = mixer_get_ctl(mixer, id); |
| type = mixer_ctl_get_type(ctl); |
| num_values = mixer_ctl_get_num_values(ctl); |
| |
| if (isdigit(string[0])) { |
| int value = atoi(string); |
| |
| for (i = 0; i < num_values; i++) { |
| if (mixer_ctl_set_value(ctl, i, value)) { |
| fprintf(stderr, "Error: invalid value\n"); |
| return; |
| } |
| } |
| } else { |
| if (type == MIXER_CTL_TYPE_ENUM) { |
| if (mixer_ctl_set_enum_by_string(ctl, string)) |
| fprintf(stderr, "Error: invalid enum value\n"); |
| } else { |
| fprintf(stderr, "Error: only enum types can be set with strings\n"); |
| } |
| } |
| } |
| |