static void set_control_id (snd_ctl_elem_id_t *ctl, const char *name) { snd_ctl_elem_id_set_name (ctl, name); snd_ctl_elem_id_set_numid (ctl, 0); snd_ctl_elem_id_set_interface (ctl, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_id_set_device (ctl, 0); snd_ctl_elem_id_set_subdevice (ctl, 0); snd_ctl_elem_id_set_index (ctl, 0); }
int get_gain(int idx, int src, int dst) { int err; int val = HDSPMM_ERROR_NO_CARD; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *ctl; snd_ctl_t *handle; if(idx >= HDSPMM_MAX_CARDS || idx < 0) return HDSPMM_ERROR_WRONG_IDX; snd_ctl_elem_value_alloca(&ctl); snd_ctl_elem_id_alloca(&id); snd_ctl_elem_id_set_name(id, "Mixer"); snd_ctl_elem_id_set_numid(id, 0); snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_HWDEP); snd_ctl_elem_id_set_device(id, 0); snd_ctl_elem_id_set_subdevice(id, 0); snd_ctl_elem_id_set_index(id, 0); snd_ctl_elem_value_set_id(ctl, id); if ((err = snd_ctl_open(&handle, card_name[cardid], SND_CTL_NONBLOCK)) < 0) { #ifndef QUIET fprintf(stderr, "Alsa error: %s\n", snd_strerror(err)); #endif return HDSPMM_ERROR_ALSA_OPEN; } snd_ctl_elem_value_set_integer(ctl, 0, src); snd_ctl_elem_value_set_integer(ctl, 1, dst); if ((err = snd_ctl_elem_read(handle, ctl)) < 0) { #ifndef QUIET fprintf(stderr, "Alsa error: %s\n", snd_strerror(err)); #endif return HDSPMM_ERROR_ALSA_READ; } val = snd_ctl_elem_value_get_integer(ctl, 2); snd_ctl_close(handle); return val; SETFLOAT(x->x_at+1, delta); SETFLOAT(x->x_at+2, phi); outlet_list(x->x_out_para, &s_list, 3, x->x_at); outlet_anything(x->x_obj.ob_outlet, s, x->x_size2d+1, x->x_at); }
int set_gain(int idx, int src, int dst, int val) { int err; snd_ctl_elem_id_t *id; snd_ctl_elem_value_t *ctl; snd_ctl_t *handle; if(idx >= HDSPMM_MAX_CARDS || idx < 0) return HDSPMM_ERROR_WRONG_IDX; snd_ctl_elem_value_alloca(&ctl); snd_ctl_elem_id_alloca(&id); snd_ctl_elem_id_set_name(id, "Mixer"); snd_ctl_elem_id_set_numid(id, 0); snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_HWDEP); snd_ctl_elem_id_set_device(id, 0); snd_ctl_elem_id_set_subdevice(id, 0); snd_ctl_elem_id_set_index(id, 0); snd_ctl_elem_value_set_id(ctl, id); if ((err = snd_ctl_open(&handle, card_name[idx], SND_CTL_NONBLOCK)) < 0) { #ifndef QUIET fprintf(stderr, "Alsa error: %s\n", snd_strerror(err)); #endif return HDSPMM_ERROR_ALSA_OPEN; } snd_ctl_elem_value_set_integer(ctl, 0, src); snd_ctl_elem_value_set_integer(ctl, 1, dst); snd_ctl_elem_value_set_integer(ctl, 2, val); if ((err = snd_ctl_elem_write(handle, ctl)) < 0) { #ifndef QUIET fprintf(stderr, "Alsa error: %s\n", snd_strerror(err)); #endif return HDSPMM_ERROR_ALSA_WRITE; } val = snd_ctl_elem_value_get_integer(ctl, 2); snd_ctl_close(handle); return val; }
static int parse_control_id(const char *str, snd_ctl_elem_id_t *id) { int c, size; char *ptr; while (*str == ' ' || *str == '\t') str++; if (!(*str)) return -EINVAL; snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); /* default */ while (*str) { if (!strncasecmp(str, "numid=", 6)) { str += 6; snd_ctl_elem_id_set_numid(id, atoi(str)); while (isdigit(*str)) str++; } else if (!strncasecmp(str, "iface=", 6)) { str += 6; if (!strncasecmp(str, "card", 4)) { snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_CARD); str += 4; } else if (!strncasecmp(str, "mixer", 5)) { snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER); str += 5; } else if (!strncasecmp(str, "pcm", 3)) { snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_PCM); str += 3; } else if (!strncasecmp(str, "rawmidi", 7)) { snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_RAWMIDI); str += 7; } else if (!strncasecmp(str, "timer", 5)) { snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_TIMER); str += 5; } else if (!strncasecmp(str, "sequencer", 9)) { snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_SEQUENCER); str += 9; } else { return -EINVAL; } } else if (!strncasecmp(str, "name=", 5)) { char buf[64]; str += 5; ptr = buf; size = 0; if (*str == '\'' || *str == '\"') { c = *str++; while (*str && *str != c) { if (size < (int)sizeof(buf)) { *ptr++ = *str; size++; } str++; } if (*str == c) str++; } else { while (*str && *str != ',') { if (size < (int)sizeof(buf)) { *ptr++ = *str; size++; } str++; } *ptr = '\0'; } snd_ctl_elem_id_set_name(id, buf); } else if (!strncasecmp(str, "index=", 6)) { str += 6; snd_ctl_elem_id_set_index(id, atoi(str)); while (isdigit(*str)) str++; } else if (!strncasecmp(str, "device=", 7)) { str += 7; snd_ctl_elem_id_set_device(id, atoi(str)); while (isdigit(*str)) str++; } else if (!strncasecmp(str, "subdevice=", 10)) { str += 10; snd_ctl_elem_id_set_subdevice(id, atoi(str)); while (isdigit(*str)) str++; } if (*str == ',') { str++; } else { if (*str) return -EINVAL; } } return 0; }
/* used by UCM parser, too */ int __snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst, const char *str, const char **ret_ptr) { int c, size, numid; int err = -EINVAL; char *ptr; while (isspace(*str)) str++; if (!(*str)) goto out; snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_MIXER); /* default */ while (*str) { if (!strncasecmp(str, "numid=", 6)) { str += 6; numid = atoi(str); if (numid <= 0) { fprintf(stderr, "amixer: Invalid numid %d\n", numid); goto out; } snd_ctl_elem_id_set_numid(dst, atoi(str)); while (isdigit(*str)) str++; } else if (!strncasecmp(str, "iface=", 6)) { str += 6; if (!strncasecmp(str, "card", 4)) { snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_CARD); str += 4; } else if (!strncasecmp(str, "mixer", 5)) { snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_MIXER); str += 5; } else if (!strncasecmp(str, "pcm", 3)) { snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_PCM); str += 3; } else if (!strncasecmp(str, "rawmidi", 7)) { snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_RAWMIDI); str += 7; } else if (!strncasecmp(str, "timer", 5)) { snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_TIMER); str += 5; } else if (!strncasecmp(str, "sequencer", 9)) { snd_ctl_elem_id_set_interface(dst, SND_CTL_ELEM_IFACE_SEQUENCER); str += 9; } else { goto out; } } else if (!strncasecmp(str, "name=", 5)) { char buf[64]; str += 5; ptr = buf; size = 0; if (*str == '\'' || *str == '\"') { c = *str++; while (*str && *str != c) { if (size < (int)sizeof(buf)) { *ptr++ = *str; size++; } str++; } if (*str == c) str++; } else { while (*str && *str != ',') { if (size < (int)sizeof(buf)) { *ptr++ = *str; size++; } str++; } } *ptr = '\0'; snd_ctl_elem_id_set_name(dst, buf); } else if (!strncasecmp(str, "index=", 6)) { str += 6; snd_ctl_elem_id_set_index(dst, atoi(str)); while (isdigit(*str)) str++; } else if (!strncasecmp(str, "device=", 7)) { str += 7; snd_ctl_elem_id_set_device(dst, atoi(str)); while (isdigit(*str)) str++; } else if (!strncasecmp(str, "subdevice=", 10)) { str += 10; snd_ctl_elem_id_set_subdevice(dst, atoi(str)); while (isdigit(*str)) str++; } if (*str == ',') { str++; } else { /* when ret_ptr is given, allow to terminate gracefully * at the next space letter */ if (ret_ptr && isspace(*str)) break; if (*str) goto out; } } err = 0; out: if (ret_ptr) *ret_ptr = str; return err; }