This function is only in Prosody version 1 (but see the conversion guide for further details, including a facility that emulates it).
int sm_conf_primix_add(struct sm_conf_primix_add_parms *confixp)
typedef struct sm_conf_primix_add_parms {
tSM_INT channel_ix; /* in */
tSM_INT participant_ix; /* in */
tSM_INT id; /* out */
} SM_CONF_PRIMIX_ADD_PARMS;
This is same as sm_conf_prim_add() except it specifies the channels using channel indices.
This function is part of the Prosody speech processing API.