/* Copyright 2005 Red Hat, Inc.
*
* Portions extraced from various ALSA code:
* Copyright (c) by Abramo Bagnara <abramo@alsa-project.org>
* Jaroslav Kysela <perex@suse.cz>
* Takashi Iwai <tiwai@suse.de>
* Bernd Kaindl <bk@suse.de>
* Jan ONDREJ (SAL) <ondrejj@salstar.sk>
*
* This software may be freely redistributed under the terms of the GNU
* public license.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <alsa/asoundlib.h>
#define TRUE (1==1)
#define FALSE (1!=1)
int verbose = 0;
typedef struct _CHANNEL {
char name[100];
int play_volume;
int play_switch;
int rec_volume;
int rec_switch;
char driver[100];
} CHANNEL;
CHANNEL channels[] = {
// channel pl vol pl swt rec vol rec swt driver
{"Master", 75, 1, 0, 0, ""},
{"Front", 75, 1, 0, 0, ""},
{"PCM", 75, 1, 0, 0, ""},
{"PCM-2", 75, 1, 0, 0, ""},
{"Synth", 75, 1, 0, 0, ""},
{"CD", 75, 1, 90, 1, ""},
// mute mic
{"Mic", 0, 0, 0, 0, ""},
// Trident/YMFPCI/emu10k1
{"Wave", 100, 1, 0, 0, ""},
{"Music", 100, 1, 0, 0, ""},
{"AC97", 100, 1, 0, 0, ""},
// CS4237B chipset
{"Master Digital", 75, 1, 0, 0, ""},
// Envy24 chips with analog outs
{"DAC", 75, 1, 0, 0, ""},
// Powermacs
{"DRC Range", 75, 1, 0, 0, ""},
// some notebooks use headphone instead of master
{"Headphone", 75, 1, 0, 0, ""},
{"Playback", 100, 1, 0, 0, ""},
// turn off digital switches
{"SB Live Analog/Digital Output Jack", 0, 0, 0, 0, ""},
{"Audigy Analog/Digital Output Jack", 0, 0, 0, 0, ""},
// Specific config for ca0106
{"Analog Front", 75, 1, 0, 0, "snd-ca0106"},
{"Analog Rear", 75, 1, 0, 0, "snd-ca0106"},
{"SPDIF Out", 0, 0, 0, 0, "snd-ca0106"},
// Specific config for snd-emu10k1
{"Audigy Analog/Digital Output Jack", 0,1,0, 0, "snd-emu10k1"},
{"IEC958 Optical Raw", 0, 0, 0, 0, "snd-emu10k1"},
{"Tone", 0, 0, 0, 0, "snd-emu10k1"},
// Specific config for snd-intel8x0
{"External Amplifier", 0, 1, 0, 0, "snd-intel8x0"},
// Specific config for snd-intel8x0 (xw8000)
{"Master Mono", 75, 1, 0, 0, "snd-intel8x0"},
// Specific config for snd_ens1371
{"IEC958", 0, 0, 0, 0, "snd-ens1371"}
};
char * strlwr(char *a)
{
char *ret = a;
while (*a != '\0') {
if (isupper (*a))
*a = tolower (*a);
a++;
}
return ret;
}
CHANNEL * channel_find(const char *p_name, const char *p_driver) {
int i;
for (i = 0; i < sizeof(channels) / sizeof(channels[0]); i++)
if (!strcmp(channels[i].driver, p_driver) && !strcmp(channels[i].name, p_name))
return (channels + i);
return (NULL);
}
int calc_volume(long min, long max, int percent)
{
return ((int)(min + ((max - min) / 100.0f) * percent));
}
int unmute_card(int index, const char *p_driver)
{
CHANNEL *p_chan;
long pmin, pmax;
long rmin, rmax;
int rc = 0;
char card[32];
char channel_name[500];
int c,vol;
snd_mixer_t *handle;
snd_mixer_selem_id_t *sid;
snd_mixer_elem_t *elem;
snd_mixer_selem_id_alloca(&sid);
if(verbose) {
fprintf(stderr,"Unmuting %s...\n",p_driver ? p_driver : "");
}
sprintf(card, "hw:%d", index);
if ((rc = snd_mixer_open(&handle, 0)) < 0) {
if(verbose) {
fprintf(stderr,"%s: error file %s, line %d...\n",__FUNCTION__,__FILE__,__LINE__);
}
return rc;
}
if ((rc = snd_mixer_attach(handle, card)) < 0) {
if(verbose) {
fprintf(stderr,"%s: error file %s, line %d...\n",__FUNCTION__,__FILE__,__LINE__);
}
goto out;
}
if ((rc = snd_mixer_selem_register(handle, NULL, NULL)) < 0) {
if(verbose) {
fprintf(stderr,"%s: error file %s, line %d...\n",__FUNCTION__,__FILE__,__LINE__);
}
goto out;
}
rc = snd_mixer_load(handle);
if (rc < 0) {
if(verbose) {
fprintf(stderr,"%s: error file %s, line %d...\n",__FUNCTION__,__FILE__,__LINE__);
}
goto out;
}
for (elem = snd_mixer_first_elem(handle); elem;
elem = snd_mixer_elem_next(elem)) {
snd_mixer_selem_get_id(elem, sid);
strncpy(channel_name,snd_mixer_selem_id_get_name(sid),500);
channel_name[499] = '\0';
p_chan = channel_find(strlwr(channel_name),p_driver);
if (!p_chan)
continue;
for (c = 0; c < SND_MIXER_SCHN_LAST; c++) {
if (snd_mixer_selem_has_capture_channel(elem, c)) {
if (snd_mixer_selem_has_capture_switch(elem)) {
snd_mixer_selem_set_capture_switch(elem, c, p_chan->rec_switch);
if(verbose) {
fprintf(stderr,"Cap. Switch %s(%d) to %d\n",p_chan->name,c,p_chan->rec_switch);
}
}
if (snd_mixer_selem_has_capture_volume(elem)) {
snd_mixer_selem_get_capture_volume_range(elem, &rmin, &rmax);
vol = calc_volume(rmin, rmax,p_chan->rec_volume);
snd_mixer_selem_set_capture_volume(elem, c, vol);
if(verbose) {
fprintf(stderr,"Cap. Volume %s(%d) to %d\n",p_chan->name,c,vol);
}
}
}
if (snd_mixer_selem_has_playback_channel(elem, c)) {
if (snd_mixer_selem_has_playback_switch(elem)) {
snd_mixer_selem_set_playback_switch(elem, c, p_chan->play_switch);
if(verbose) {
fprintf(stderr,"Play. Switch %s(%d) to %d\n",p_chan->name,c,p_chan->play_switch);
}
}
if (snd_mixer_selem_has_playback_volume(elem)) {
snd_mixer_selem_get_playback_volume_range(elem, &pmin, &pmax);
vol = calc_volume(pmin, pmax,p_chan->play_volume);
snd_mixer_selem_set_playback_volume(elem, c, vol);
if(verbose) {
fprintf(stderr,"Play. Volume %s(%d) to %d\n",p_chan->name,c,vol);
}
}
}
}
}
return(TRUE);
out:
snd_mixer_close(handle);
return rc;
}
char * check_driver_name(char *p_name)
{
char *p_tmp = strchr(p_name,'-');
if(p_tmp) {
*p_tmp = '_';
}
return(p_name);
}
#define PROC_MODULES "/proc/asound/modules"
static char driver_name[100];
const char * get_card_driver(int index)
{
FILE *f = fopen(PROC_MODULES,"r");
char tmp[100];
char *p_tmp;
int id;
if(!f)
return(NULL);
while(fgets(tmp,100,f)) {
sscanf(tmp," %d %s",&id,driver_name);
if(id == index) {
return(check_driver_name(driver_name));
}
}
return(NULL);
}
void check_data(void)
{
char *p_tmp;
int i;
for (i = 0; i < sizeof(channels) / sizeof(channels[0]); i++) {
strlwr(channels[i].name);
check_driver_name(channels[i].driver);
}
}
void usage(char *p_name)
{
printf("Alsa Unmute utility, Copyright 2005 Red Hat, Inc.\n");
printf("This software may be freely redistributed under the terms of the GNU\n");
printf("public license.\n\n");
printf("usage: %s card_number [-v]\n\n", p_name);
printf(" card_number - number of unmuted card\n");
printf(" [-v] - verbose mode\n\n");
exit(0);
}
/*
Unmute specified card
alsaunmute 0
*/
int main(int argc, char **argv)
{
const char *p_driver;
int index;
if (argc < 2) {
usage(argv[0]);
exit(0);
}
index = atoi(argv[1]);
p_driver = get_card_driver(index);
if (argc == 3 && (!strcmp(argv[2],"-v") || !strcmp(argv[2],"-V"))) {
verbose = TRUE;
}
if(!p_driver) {
fprintf(stderr,"Wrong card index %d...\n",index);
return(1);
}
if(verbose) {
fprintf(stderr,"Card %d Driver %s...\n",index,p_driver);
}
check_data();
// default settings for all cards
unmute_card(index,"");
// specific setting for selected card_number
unmute_card(index,p_driver);
return (0);
}