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https://github.com/alsa-project/alsa-utils
synced 2024-09-19 17:49:59 +02:00
Enhanced syntax for sset (channels, direction)
This commit is contained in:
Jaroslav Kysela
parent
abe718c7cf
commit
ea8fe975d9
1 changed files with 129 additions and 43 deletions
172
amixer/amixer.c
172
amixer/amixer.c
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@ -301,6 +301,36 @@ static int get_volume_simple(char **ptr, int min, int max, int orig)
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return tmp1;
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}
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static int get_bool_simple(char **ptr, char *str, int invert, int orig)
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{
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if (**ptr == ':')
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(*ptr)++;
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if (!strncasecmp(*ptr, str, strlen(str))) {
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orig = 1 ^ (invert ? 1 : 0);
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while (**ptr != '\0' && **ptr != ',' && **ptr != ':')
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(*ptr)++;
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}
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if (**ptr == ',' || **ptr == ':')
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(*ptr)++;
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return orig;
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}
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static int simple_skip_word(char **ptr, char *str)
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{
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char *xptr = *ptr;
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if (*xptr == ':')
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xptr++;
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if (!strncasecmp(xptr, str, strlen(str))) {
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while (*xptr != '\0' && *xptr != ',' && *xptr != ':')
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xptr++;
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if (*xptr == ',' || *xptr == ':')
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xptr++;
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*ptr = xptr;
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return 1;
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}
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return 0;
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}
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static void show_control_id(snd_ctl_elem_id_t *id)
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{
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unsigned int index, device, subdevice;
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@ -991,15 +1021,37 @@ static channel_mask_t chanmask[] = {
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{NULL, 0}
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};
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static unsigned int channels_mask(char *arg)
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static unsigned int channels_mask(char **arg, unsigned int def)
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{
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channel_mask_t *c;
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for (c = chanmask; c->name; c++) {
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if (strncmp(arg, c->name, strlen(c->name)) == 0)
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if (strncasecmp(*arg, c->name, strlen(c->name)) == 0) {
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while (**arg != '\0' && **arg != ',' && **arg != ' ' && **arg != '\t')
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(*arg)++;
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if (**arg == ',' || **arg == ' ' || **arg == '\t')
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(*arg)++;
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return c->mask;
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}
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}
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return ~0U;
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return def;
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}
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static unsigned int dir_mask(char **arg, unsigned int def)
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{
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int findend = 0;
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if (strncasecmp(*arg, "playback", 8) == 0)
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def = findend = 1;
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else if (strncasecmp(*arg, "capture", 8) == 0)
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def = findend = 2;
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if (findend) {
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while (**arg != '\0' && **arg != ',' && **arg != ' ' && **arg != '\t')
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(*arg)++;
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if (**arg == ',' || **arg == ' ' || **arg == '\t')
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(*arg)++;
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}
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return def;
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}
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static int sset(unsigned int argc, char *argv[], int roflag)
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@ -1007,8 +1059,9 @@ static int sset(unsigned int argc, char *argv[], int roflag)
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int err;
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unsigned int idx;
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snd_mixer_selem_channel_id_t chn;
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unsigned int channels;
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long min, max;
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unsigned int channels = ~0UL;
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unsigned int dir = 3;
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long pmin, pmax, cmin, cmax;
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snd_mixer_t *handle;
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snd_mixer_elem_t *elem;
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snd_mixer_selem_id_t *sid;
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@ -1052,51 +1105,84 @@ static int sset(unsigned int argc, char *argv[], int roflag)
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snd_mixer_close(handle);
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return -ENOENT;
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}
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snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
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if (roflag)
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goto __skip_write;
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snd_mixer_selem_get_playback_volume_range(elem, &pmin, &pmax);
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snd_mixer_selem_get_capture_volume_range(elem, &cmin, &cmax);
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for (idx = 1; idx < argc; idx++) {
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if (!strncmp(argv[idx], "mute", 4) ||
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!strncmp(argv[idx], "off", 3)) {
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snd_mixer_selem_set_playback_switch_all(elem, 0);
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char *ptr = argv[idx], *optr;
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int multi;
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channels = channels_mask(&ptr, channels);
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if (*ptr == '\0')
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continue;
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} else if (!strncmp(argv[idx], "unmute", 6) ||
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!strncmp(argv[idx], "on", 2)) {
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snd_mixer_selem_set_playback_switch_all(elem, 1);
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dir = dir_mask(&ptr, dir);
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if (*ptr == '\0')
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continue;
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} else if (!strncmp(argv[idx], "cap", 3) ||
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!strncmp(argv[idx], "rec", 3)) {
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snd_mixer_selem_set_capture_switch_all(elem, 1);
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continue;
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} else if (!strncmp(argv[idx], "nocap", 5) ||
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!strncmp(argv[idx], "norec", 5)) {
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snd_mixer_selem_set_capture_switch_all(elem, 0);
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continue;
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}
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channels = channels_mask(argv[idx]);
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if (isdigit(argv[idx][0]) ||
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argv[idx][0] == '+' ||
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argv[idx][0] == '-') {
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char *ptr;
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int multi;
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multi = (strchr(argv[idx], ',') != NULL);
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ptr = argv[idx];
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for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) {
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long vol;
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if (!(channels & (1 << chn)) ||
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!snd_mixer_selem_has_playback_channel(elem, chn))
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continue;
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multi = (strchr(ptr, ',') != NULL);
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optr = ptr;
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for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) {
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char *sptr = NULL;
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int ival;
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long lval;
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if (! multi)
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ptr = argv[idx];
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snd_mixer_selem_get_playback_volume(elem, chn, &vol);
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snd_mixer_selem_set_playback_volume(elem, chn, get_volume_simple(&ptr, min, max, vol));
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if (!(channels & (1 << chn)))
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continue;
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if ((dir & 1) && snd_mixer_selem_has_playback_channel(elem, chn)) {
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sptr = ptr;
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if (!strncmp(ptr, "mute", 4) && snd_mixer_selem_has_playback_switch(elem)) {
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snd_mixer_selem_get_playback_switch(elem, chn, &ival);
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snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "mute", 0, ival));
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} else if (!strncmp(ptr, "off", 3) && snd_mixer_selem_has_playback_switch(elem)) {
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snd_mixer_selem_get_playback_switch(elem, chn, &ival);
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snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "off", 0, ival));
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} else if (!strncmp(ptr, "unmute", 6) && snd_mixer_selem_has_playback_switch(elem)) {
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snd_mixer_selem_get_playback_switch(elem, chn, &ival);
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snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "unmute", 1, ival));
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} else if (!strncmp(ptr, "on", 2) && snd_mixer_selem_has_playback_switch(elem)) {
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snd_mixer_selem_get_playback_switch(elem, chn, &ival);
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snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "on", 1, ival));
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} else if ((isdigit(*ptr) || *ptr == '-' || *ptr == '+') && snd_mixer_selem_has_playback_volume(elem)) {
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snd_mixer_selem_get_playback_volume(elem, chn, &lval);
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snd_mixer_selem_set_playback_volume(elem, chn, get_volume_simple(&ptr, pmin, pmax, lval));
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} else if (simple_skip_word(&ptr, "cap") || simple_skip_word(&ptr, "rec") ||
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simple_skip_word(&ptr, "nocap") || simple_skip_word(&ptr, "norec")) {
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/* nothing */
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} else {
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error("Unknown setup '%s'..\n", ptr);
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snd_mixer_close(handle);
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return err;
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}
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}
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} else {
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error("Unknown setup '%s'..\n", argv[idx]);
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snd_mixer_close(handle);
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return err;
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if ((dir & 2) && snd_mixer_selem_has_capture_channel(elem, chn)) {
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if (sptr != NULL)
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ptr = sptr;
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sptr = ptr;
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if (!strncmp(ptr, "cap", 3) && snd_mixer_selem_has_capture_switch(elem)) {
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snd_mixer_selem_get_capture_switch(elem, chn, &ival);
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snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "cap", 0, ival));
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} else if (!strncmp(ptr, "rec", 3) && snd_mixer_selem_has_capture_switch(elem)) {
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snd_mixer_selem_get_capture_switch(elem, chn, &ival);
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snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "rec", 0, ival));
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} else if (!strncmp(ptr, "nocap", 5) && snd_mixer_selem_has_capture_switch(elem)) {
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snd_mixer_selem_get_capture_switch(elem, chn, &ival);
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snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "nocap", 1, ival));
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} else if (!strncmp(ptr, "norec", 5) && snd_mixer_selem_has_capture_switch(elem)) {
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snd_mixer_selem_get_capture_switch(elem, chn, &ival);
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snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "norec", 1, ival));
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} else if ((isdigit(*ptr) || *ptr == '-' || *ptr == '+') && snd_mixer_selem_has_capture_volume(elem)) {
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snd_mixer_selem_get_capture_volume(elem, chn, &lval);
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snd_mixer_selem_set_capture_volume(elem, chn, get_volume_simple(&ptr, cmin, cmax, lval));
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} else if (simple_skip_word(&ptr, "mute") || simple_skip_word(&ptr, "off") ||
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simple_skip_word(&ptr, "unmute") || simple_skip_word(&ptr, "on")) {
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/* nothing */
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} else {
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error("Unknown setup '%s'..\n", ptr);
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snd_mixer_close(handle);
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return err;
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}
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}
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if (!multi)
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ptr = optr;
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}
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}
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__skip_write:
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