return linear_formats[width][!!unsignd][!!big_endian];
}
}
-
-/**
- * \brief Parse control element id from the config
- * \param conf the config tree to parse
- * \param ctl_id the pointer to store the resultant control element id
- * \param cardp the pointer to store the card index
- * \param cchannelsp the pointer to store the number of channels (optional)
- * \param hwctlp the pointer to store the h/w control flag (optional)
- * \return 0 if successful, or a negative error code
- *
- * This function parses the given config tree to retrieve the control element id
- * and the card index. It's used by softvol. External PCM plugins can use this
- * function for creating or assigining their controls.
- *
- * cchannelsp and hwctlp arguments are optional. Set NULL if not necessary.
- */
-int snd_pcm_parse_control_id(snd_config_t *conf, snd_ctl_elem_id_t *ctl_id, int *cardp,
- int *cchannelsp, int *hwctlp)
-{
- snd_config_iterator_t i, next;
- int iface = SND_CTL_ELEM_IFACE_MIXER;
- const char *name = NULL;
- long index = 0;
- long device = -1;
- long subdevice = -1;
- int err;
-
- assert(ctl_id && cardp);
-
- *cardp = -1;
- if (cchannelsp)
- *cchannelsp = 2;
- snd_config_for_each(i, next, conf) {
- snd_config_t *n = snd_config_iterator_entry(i);
- const char *id;
- if (snd_config_get_id(n, &id) < 0)
- continue;
- if (strcmp(id, "comment") == 0)
- continue;
- if (strcmp(id, "card") == 0) {
- const char *str;
- long v;
- if ((err = snd_config_get_integer(n, &v)) < 0) {
- if ((err = snd_config_get_string(n, &str)) < 0) {
- SNDERR("Invalid field %s", id);
- goto _err;
- }
- *cardp = snd_card_get_index(str);
- if (*cardp < 0) {
- SNDERR("Cannot get index for %s", str);
- err = *cardp;
- goto _err;
- }
- } else
- *cardp = v;
- continue;
- }
- if (strcmp(id, "iface") == 0 || strcmp(id, "interface") == 0) {
- const char *ptr;
- if ((err = snd_config_get_string(n, &ptr)) < 0) {
- SNDERR("field %s is not a string", id);
- goto _err;
- }
- if ((err = snd_config_get_ctl_iface_ascii(ptr)) < 0) {
- SNDERR("Invalid value for '%s'", id);
- goto _err;
- }
- iface = err;
- continue;
- }
- if (strcmp(id, "name") == 0) {
- if ((err = snd_config_get_string(n, &name)) < 0) {
- SNDERR("field %s is not a string", id);
- goto _err;
- }
- continue;
- }
- if (strcmp(id, "index") == 0) {
- if ((err = snd_config_get_integer(n, &index)) < 0) {
- SNDERR("field %s is not an integer", id);
- goto _err;
- }
- continue;
- }
- if (strcmp(id, "device") == 0) {
- if ((err = snd_config_get_integer(n, &device)) < 0) {
- SNDERR("field %s is not an integer", id);
- goto _err;
- }
- continue;
- }
- if (strcmp(id, "subdevice") == 0) {
- if ((err = snd_config_get_integer(n, &subdevice)) < 0) {
- SNDERR("field %s is not an integer", id);
- goto _err;
- }
- continue;
- }
- if (cchannelsp && strcmp(id, "count") == 0) {
- long v;
- if ((err = snd_config_get_integer(n, &v)) < 0) {
- SNDERR("field %s is not an integer", id);
- goto _err;
- }
- if (v < 1 || v > 2) {
- SNDERR("Invalid count %ld", v);
- goto _err;
- }
- *cchannelsp = v;
- continue;
- }
- if (hwctlp && strcmp(id, "hwctl") == 0) {
- if ((err = snd_config_get_bool(n)) < 0) {
- SNDERR("The field %s must be a boolean type", id);
- return err;
- }
- *hwctlp = err;
- continue;
- }
- SNDERR("Unknown field %s", id);
- return -EINVAL;
- }
- if (name == NULL) {
- SNDERR("Missing control name");
- err = -EINVAL;
- goto _err;
- }
- if (device < 0)
- device = 0;
- if (subdevice < 0)
- subdevice = 0;
-
- snd_ctl_elem_id_set_interface(ctl_id, iface);
- snd_ctl_elem_id_set_name(ctl_id, name);
- snd_ctl_elem_id_set_index(ctl_id, index);
- snd_ctl_elem_id_set_device(ctl_id, device);
- snd_ctl_elem_id_set_subdevice(ctl_id, subdevice);
-
- return 0;
-
- _err:
- return err;
-}
return 0;
}
-/* in pcm_misc.c */
-int snd_pcm_parse_control_id(snd_config_t *conf, snd_ctl_elem_id_t *ctl_id, int *cardp,
- int *cchannelsp, int *hwctlp);
+int _snd_pcm_parse_control_id(snd_config_t *conf, snd_ctl_elem_id_t *ctl_id,
+ int *cardp, int *cchannels)
+{
+ snd_config_iterator_t i, next;
+ int iface = SND_CTL_ELEM_IFACE_MIXER;
+ const char *name = NULL;
+ long index = 0;
+ long device = -1;
+ long subdevice = -1;
+ int err;
+
+ assert(ctl_id && cardp && cchannels);
+
+ *cardp = -1;
+ *cchannels = 2;
+ snd_config_for_each(i, next, conf) {
+ snd_config_t *n = snd_config_iterator_entry(i);
+ const char *id;
+ if (snd_config_get_id(n, &id) < 0)
+ continue;
+ if (strcmp(id, "comment") == 0)
+ continue;
+ if (strcmp(id, "card") == 0) {
+ const char *str;
+ long v;
+ if ((err = snd_config_get_integer(n, &v)) < 0) {
+ if ((err = snd_config_get_string(n, &str)) < 0) {
+ SNDERR("Invalid field %s", id);
+ goto _err;
+ }
+ *cardp = snd_card_get_index(str);
+ if (*cardp < 0) {
+ SNDERR("Cannot get index for %s", str);
+ err = *cardp;
+ goto _err;
+ }
+ } else
+ *cardp = v;
+ continue;
+ }
+ if (strcmp(id, "iface") == 0 || strcmp(id, "interface") == 0) {
+ err = snd_config_get_ctl_iface(n);
+ if (err < 0)
+ goto _err;
+ iface = err;
+ continue;
+ }
+ if (strcmp(id, "name") == 0) {
+ if ((err = snd_config_get_string(n, &name)) < 0) {
+ SNDERR("field %s is not a string", id);
+ goto _err;
+ }
+ continue;
+ }
+ if (strcmp(id, "index") == 0) {
+ if ((err = snd_config_get_integer(n, &index)) < 0) {
+ SNDERR("field %s is not an integer", id);
+ goto _err;
+ }
+ continue;
+ }
+ if (strcmp(id, "device") == 0) {
+ if ((err = snd_config_get_integer(n, &device)) < 0) {
+ SNDERR("field %s is not an integer", id);
+ goto _err;
+ }
+ continue;
+ }
+ if (strcmp(id, "subdevice") == 0) {
+ if ((err = snd_config_get_integer(n, &subdevice)) < 0) {
+ SNDERR("field %s is not an integer", id);
+ goto _err;
+ }
+ continue;
+ }
+ if (strcmp(id, "count") == 0) {
+ long v;
+ if ((err = snd_config_get_integer(n, &v)) < 0) {
+ SNDERR("field %s is not an integer", id);
+ goto _err;
+ }
+ if (v < 1 || v > 2) {
+ SNDERR("Invalid count %ld", v);
+ goto _err;
+ }
+ *cchannels = v;
+ continue;
+ }
+ SNDERR("Unknown field %s", id);
+ return -EINVAL;
+ }
+ if (name == NULL) {
+ SNDERR("Missing control name");
+ err = -EINVAL;
+ goto _err;
+ }
+ if (device < 0)
+ device = 0;
+ if (subdevice < 0)
+ subdevice = 0;
+
+ snd_ctl_elem_id_set_interface(ctl_id, iface);
+ snd_ctl_elem_id_set_name(ctl_id, name);
+ snd_ctl_elem_id_set_index(ctl_id, index);
+ snd_ctl_elem_id_set_device(ctl_id, device);
+ snd_ctl_elem_id_set_subdevice(ctl_id, subdevice);
+
+ return 0;
+
+ _err:
+ return err;
+}
/*! \page pcm_plugins
snd_config_delete(sconf);
if (err < 0)
return err;
- err = snd_pcm_parse_control_id(control, &ctl_id, &card,
- &cchannels, NULL);
+ err = _snd_pcm_parse_control_id(control, &ctl_id, &card, &cchannels);
if (err < 0) {
snd_pcm_close(spcm);
return err;
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