From ea8fe975d983f13dbdb275460f53772ed453bf46 Mon Sep 17 00:00:00 2001 From: Jaroslav Kysela Date: Mon, 27 Aug 2001 09:15:44 +0000 Subject: [PATCH] Enhanced syntax for sset (channels, direction) --- amixer/amixer.c | 172 ++++++++++++++++++++++++++++++++++++------------ 1 file changed, 129 insertions(+), 43 deletions(-) diff --git a/amixer/amixer.c b/amixer/amixer.c index d6afd5e..0e6345e 100644 --- a/amixer/amixer.c +++ b/amixer/amixer.c @@ -301,6 +301,36 @@ static int get_volume_simple(char **ptr, int min, int max, int orig) return tmp1; } +static int get_bool_simple(char **ptr, char *str, int invert, int orig) +{ + if (**ptr == ':') + (*ptr)++; + if (!strncasecmp(*ptr, str, strlen(str))) { + orig = 1 ^ (invert ? 1 : 0); + while (**ptr != '\0' && **ptr != ',' && **ptr != ':') + (*ptr)++; + } + if (**ptr == ',' || **ptr == ':') + (*ptr)++; + return orig; +} + +static int simple_skip_word(char **ptr, char *str) +{ + char *xptr = *ptr; + if (*xptr == ':') + xptr++; + if (!strncasecmp(xptr, str, strlen(str))) { + while (*xptr != '\0' && *xptr != ',' && *xptr != ':') + xptr++; + if (*xptr == ',' || *xptr == ':') + xptr++; + *ptr = xptr; + return 1; + } + return 0; +} + static void show_control_id(snd_ctl_elem_id_t *id) { unsigned int index, device, subdevice; @@ -991,15 +1021,37 @@ static channel_mask_t chanmask[] = { {NULL, 0} }; -static unsigned int channels_mask(char *arg) +static unsigned int channels_mask(char **arg, unsigned int def) { channel_mask_t *c; for (c = chanmask; c->name; c++) { - if (strncmp(arg, c->name, strlen(c->name)) == 0) + if (strncasecmp(*arg, c->name, strlen(c->name)) == 0) { + while (**arg != '\0' && **arg != ',' && **arg != ' ' && **arg != '\t') + (*arg)++; + if (**arg == ',' || **arg == ' ' || **arg == '\t') + (*arg)++; return c->mask; + } } - return ~0U; + return def; +} + +static unsigned int dir_mask(char **arg, unsigned int def) +{ + int findend = 0; + + if (strncasecmp(*arg, "playback", 8) == 0) + def = findend = 1; + else if (strncasecmp(*arg, "capture", 8) == 0) + def = findend = 2; + if (findend) { + while (**arg != '\0' && **arg != ',' && **arg != ' ' && **arg != '\t') + (*arg)++; + if (**arg == ',' || **arg == ' ' || **arg == '\t') + (*arg)++; + } + return def; } static int sset(unsigned int argc, char *argv[], int roflag) @@ -1007,8 +1059,9 @@ static int sset(unsigned int argc, char *argv[], int roflag) int err; unsigned int idx; snd_mixer_selem_channel_id_t chn; - unsigned int channels; - long min, max; + unsigned int channels = ~0UL; + unsigned int dir = 3; + long pmin, pmax, cmin, cmax; snd_mixer_t *handle; snd_mixer_elem_t *elem; snd_mixer_selem_id_t *sid; @@ -1052,51 +1105,84 @@ static int sset(unsigned int argc, char *argv[], int roflag) snd_mixer_close(handle); return -ENOENT; } - snd_mixer_selem_get_playback_volume_range(elem, &min, &max); if (roflag) goto __skip_write; + snd_mixer_selem_get_playback_volume_range(elem, &pmin, &pmax); + snd_mixer_selem_get_capture_volume_range(elem, &cmin, &cmax); for (idx = 1; idx < argc; idx++) { - if (!strncmp(argv[idx], "mute", 4) || - !strncmp(argv[idx], "off", 3)) { - snd_mixer_selem_set_playback_switch_all(elem, 0); + char *ptr = argv[idx], *optr; + int multi; + channels = channels_mask(&ptr, channels); + if (*ptr == '\0') continue; - } else if (!strncmp(argv[idx], "unmute", 6) || - !strncmp(argv[idx], "on", 2)) { - snd_mixer_selem_set_playback_switch_all(elem, 1); + dir = dir_mask(&ptr, dir); + if (*ptr == '\0') continue; - } else if (!strncmp(argv[idx], "cap", 3) || - !strncmp(argv[idx], "rec", 3)) { - snd_mixer_selem_set_capture_switch_all(elem, 1); - continue; - } else if (!strncmp(argv[idx], "nocap", 5) || - !strncmp(argv[idx], "norec", 5)) { - snd_mixer_selem_set_capture_switch_all(elem, 0); - continue; - } - channels = channels_mask(argv[idx]); - if (isdigit(argv[idx][0]) || - argv[idx][0] == '+' || - argv[idx][0] == '-') { - char *ptr; - int multi; - - multi = (strchr(argv[idx], ',') != NULL); - ptr = argv[idx]; - for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) { - long vol; - if (!(channels & (1 << chn)) || - !snd_mixer_selem_has_playback_channel(elem, chn)) - continue; + multi = (strchr(ptr, ',') != NULL); + optr = ptr; + for (chn = 0; chn <= SND_MIXER_SCHN_LAST; chn++) { + char *sptr = NULL; + int ival; + long lval; - if (! multi) - ptr = argv[idx]; - snd_mixer_selem_get_playback_volume(elem, chn, &vol); - snd_mixer_selem_set_playback_volume(elem, chn, get_volume_simple(&ptr, min, max, vol)); + if (!(channels & (1 << chn))) + continue; + if ((dir & 1) && snd_mixer_selem_has_playback_channel(elem, chn)) { + sptr = ptr; + if (!strncmp(ptr, "mute", 4) && snd_mixer_selem_has_playback_switch(elem)) { + snd_mixer_selem_get_playback_switch(elem, chn, &ival); + snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "mute", 0, ival)); + } else if (!strncmp(ptr, "off", 3) && snd_mixer_selem_has_playback_switch(elem)) { + snd_mixer_selem_get_playback_switch(elem, chn, &ival); + snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "off", 0, ival)); + } else if (!strncmp(ptr, "unmute", 6) && snd_mixer_selem_has_playback_switch(elem)) { + snd_mixer_selem_get_playback_switch(elem, chn, &ival); + snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "unmute", 1, ival)); + } else if (!strncmp(ptr, "on", 2) && snd_mixer_selem_has_playback_switch(elem)) { + snd_mixer_selem_get_playback_switch(elem, chn, &ival); + snd_mixer_selem_set_playback_switch(elem, chn, get_bool_simple(&ptr, "on", 1, ival)); + } else if ((isdigit(*ptr) || *ptr == '-' || *ptr == '+') && snd_mixer_selem_has_playback_volume(elem)) { + snd_mixer_selem_get_playback_volume(elem, chn, &lval); + snd_mixer_selem_set_playback_volume(elem, chn, get_volume_simple(&ptr, pmin, pmax, lval)); + } else if (simple_skip_word(&ptr, "cap") || simple_skip_word(&ptr, "rec") || + simple_skip_word(&ptr, "nocap") || simple_skip_word(&ptr, "norec")) { + /* nothing */ + } else { + error("Unknown setup '%s'..\n", ptr); + snd_mixer_close(handle); + return err; + } } - } else { - error("Unknown setup '%s'..\n", argv[idx]); - snd_mixer_close(handle); - return err; + if ((dir & 2) && snd_mixer_selem_has_capture_channel(elem, chn)) { + if (sptr != NULL) + ptr = sptr; + sptr = ptr; + if (!strncmp(ptr, "cap", 3) && snd_mixer_selem_has_capture_switch(elem)) { + snd_mixer_selem_get_capture_switch(elem, chn, &ival); + snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "cap", 0, ival)); + } else if (!strncmp(ptr, "rec", 3) && snd_mixer_selem_has_capture_switch(elem)) { + snd_mixer_selem_get_capture_switch(elem, chn, &ival); + snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "rec", 0, ival)); + } else if (!strncmp(ptr, "nocap", 5) && snd_mixer_selem_has_capture_switch(elem)) { + snd_mixer_selem_get_capture_switch(elem, chn, &ival); + snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "nocap", 1, ival)); + } else if (!strncmp(ptr, "norec", 5) && snd_mixer_selem_has_capture_switch(elem)) { + snd_mixer_selem_get_capture_switch(elem, chn, &ival); + snd_mixer_selem_set_capture_switch(elem, chn, get_bool_simple(&ptr, "norec", 1, ival)); + } else if ((isdigit(*ptr) || *ptr == '-' || *ptr == '+') && snd_mixer_selem_has_capture_volume(elem)) { + snd_mixer_selem_get_capture_volume(elem, chn, &lval); + snd_mixer_selem_set_capture_volume(elem, chn, get_volume_simple(&ptr, cmin, cmax, lval)); + } else if (simple_skip_word(&ptr, "mute") || simple_skip_word(&ptr, "off") || + simple_skip_word(&ptr, "unmute") || simple_skip_word(&ptr, "on")) { + /* nothing */ + } else { + error("Unknown setup '%s'..\n", ptr); + snd_mixer_close(handle); + return err; + } + } + if (!multi) + ptr = optr; } } __skip_write: