FreeCalypso > hg > themwi-system-sw
view mgw/dtmf_ctrl.c @ 243:59a166c50d0e
themwi-mncc: convert to libnumdb2
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 14 Aug 2023 19:13:26 -0800 |
parents | 0047c4c08d9e |
children |
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/* * In this module we implement start/stop control of DTMF generation * toward PSTN on GSM-to-PSTN gateway endpoints. */ #include <sys/types.h> #include <sys/socket.h> #include <sys/time.h> #include <netinet/in.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <syslog.h> #include "../include/tmgw_ctrl.h" #include "../include/tmgw_const.h" #include "struct.h" #include "dtmf_defs.h" extern struct endpoint *find_ep_by_id(); extern struct dtmf_desc dtmf_table[]; void process_dtmf_start(conn, req, resp) struct ctrl_conn *conn; struct tmgw_ctrl_req *req; struct tmgw_ctrl_resp *resp; { struct endpoint *ep; struct dtmf_desc *desc; ep = find_ep_by_id(conn, req->ep_id); if (!ep) { protocol_err: resp->res = TMGW_RESP_ERR_PROT; return; } if (ep->ep_type != TMGW_EP_TYPE_GATEWAY) goto protocol_err; if (!(ep->fwd_mode & TMGW_FWD_ENABLE_GSM2PSTN)) goto protocol_err; for (desc = dtmf_table; desc->digit; desc++) if (desc->digit == req->fwd_mode) break; if (!desc->digit) { resp->res = TMGW_RESP_ERR_PARAM; return; } if (ep->dtmf_sample_ptr) { resp->res = TMGW_RESP_ERR_BUSY; return; } /* start it */ ep->dtmf_sample_ptr = desc->samples; ep->dtmf_frames_sent = 0; /* return success */ resp->res = TMGW_RESP_OK; } void process_dtmf_stop(conn, req, resp) struct ctrl_conn *conn; struct tmgw_ctrl_req *req; struct tmgw_ctrl_resp *resp; { struct endpoint *ep; ep = find_ep_by_id(conn, req->ep_id); if (!ep) { protocol_err: resp->res = TMGW_RESP_ERR_PROT; return; } if (ep->ep_type != TMGW_EP_TYPE_GATEWAY) goto protocol_err; ep->dtmf_sample_ptr = 0; resp->res = TMGW_RESP_OK; }