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/*
* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
*
* Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in
* the the people's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
*
* DISCLAIMER
* THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT.
* IF YOU NEED TO INTEGRATE THIRD PARTY’S TECHNOLOGY (SONY, DTS, DOLBY, AVS OR MPEGLA, ETC.)
* IN ALLWINNERS’SDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN
* ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES.
* ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS
* COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE.
* YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTY’S TECHNOLOGY.
*
*
* THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT
* PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING
* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* IN NO EVENT SHALL ALLWINNER 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 <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <ctype.h>
#include <aw-alsa-lib/control.h>
#include <aw-alsa-lib/common.h>
#include <hal_cmd.h>
static void amixer_ctl_info_print(snd_ctl_info_t *info)
{
if (info->type == SND_CTL_ELEM_TYPE_INTEGER) {
printf("numid=%u, name=\'%s\'\n", info->id, info->name);
printf("\t value=%lu, min=%u, max=%u\n",
info->value, info->min, info->max);
} else if (info->type == SND_CTL_ELEM_TYPE_ENUMERATED) {
printf("numid=%u, name=\'%s\'\n", info->id, info->name);
printf("\t value=%s, enum=", info->texts[info->value]);
int i = 0;
for (i = 0; i < info->items; i++) {
printf("%s ", info->texts[i]);
}
printf("\n");
} else {
printf("numid=%u, name=\'%s\' type error:%d\n",
info->id, info->name, info->type);
}
}
static int amixer_controls(const char *card_name)
{
int num, ret, i, count = 0;
snd_ctl_info_t info;
if ((card_name == NULL) || (!strcmp(card_name, "default")))
card_name = "audiocodec";
num = snd_ctl_num(card_name);
if (num == 0) {
printf("The card didn't have ctl.\n");
return 0;
} else if (num < 0)
return -1;
for (i = 0; i < num;i ++) {
memset(&info, 0, sizeof(snd_ctl_info_t));
ret = snd_ctl_get_bynum(card_name, i, &info);
if (ret < 0) {
printf("get %d elem failed\n", i);
return ret;
}
amixer_ctl_info_print(&info);
}
return 0;
}
static int parser_ctl_numid(const char *cmd, int *id)
{
char *id_str = "numid=";
if (strncmp(cmd, id_str, strlen(id_str)) != 0)
return -1;
*id = atoi(cmd+strlen(id_str));
return 0;
}
static void amixer_usage(void)
{
printf("Usage: amixer <options> [command]\n");
printf("\nAvailable options:\n");
printf(" -c,--card N select the card\n");
printf("\nAvailable commands:\n");
printf(" amixer show all controls for default card\n");
printf(" amixer set numid val set control contents for one control\n");
printf(" amixer get numid get control contents for one control\n");
}
static int amixer(int argc, char *argv[])
{
static char g_card_name[64] = "audiocodec";
int ret = 0;
int numid = 0;
char *ctl_name = NULL;
const char *card_name = NULL;
snd_ctl_info_t info;
int morehelp = 0;
const struct option long_option[] = {
{"help", 0, NULL, 'h'},
{"list", 0, NULL, 'l'},
{"card", 1, NULL, 'c'},
{NULL, 0, NULL, 0},
};
while (1) {
int c;
if ((c = getopt_long(argc, argv, "hlc:", long_option, NULL)) < 0)
break;
switch (c) {
case 'h':
amixer_usage();
return 0;
case 'l':
asound_list();
return 0;
case 'c': {
int card_index = 0;
if (isdigit((unsigned char)(*optarg))) {
sscanf(optarg, "%d", &card_index);
card_name = snd_card_name(card_index);
if (card_name == NULL) {
fprintf(stderr, "Invalid card number.\n");
morehelp++;
} else {
strncpy(g_card_name, card_name, 64);
}
} else
strncpy(g_card_name, optarg, 64);
fprintf(stderr, "Card Name:%s.\n", g_card_name);
}
break;
default:
fprintf(stderr, "Invalid switch or option needs an argument.\n");
morehelp++;
}
}
if (morehelp) {
amixer_usage();
return 1;
}
if ((argc == 1) || ((argc - optind) <= 0)) {
return amixer_controls(g_card_name);
}
if (!strcmp("get", argv[optind])) {
if (!snd_ctl_get_bynum(g_card_name, atoi(argv[optind + 1]), &info)) {
amixer_ctl_info_print(&info);
return 0;
}
} else if (!strcmp("set", argv[optind])) {
int value = -1;
numid = atoi(argv[optind + 1]);
if (argc >= 4)
value = atoi(argv[optind + 2]);
if (value >= 0) {
if (snd_ctl_get_bynum(g_card_name, numid, &info) != 0) {
printf("snd_ctl_get failed\n");
return -1;
}
snd_ctl_set_bynum(g_card_name, numid, value);
}
if (!snd_ctl_get_bynum(g_card_name, numid, &info)) {
amixer_ctl_info_print(&info);
return 0;
}
} else {
amixer_usage();
}
return 0;
}
int cmd_amixer(int argc, char ** argv)
{
amixer(argc, argv);
return 0;
}
FINSH_FUNCTION_EXPORT_CMD(cmd_amixer, amixer, amixer utils);
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