Jeff,
Thank you for your answer. I used the same function as in the demo program. See below. I noticed that in the demo program, the gc_SetUserInfo() API is called twice. Once from the gc_set_channel_codecs() function and once from the process_event() function. See below. I don't understand the difference between the two calls...
Mike
switch (evttype)
{
case GCEV_OPENEX:
....
if (pline->techtype == SIP) {
GC_PARM_BLK *parmblkp = NULL;
gc_util_insert_parm_val(&parmblkp, IPSET_DTMF, IPPARM_SUPPORT_DTMF_BITMASK,
sizeof(char), IP_DTMF_TYPE_INBAND_RTP);
if (gc_SetUserInfo(GCTGT_GCLIB_CHAN, port[index].ldev, parmblkp, GC_ALLCALLS) != GC_SUCCESS) {
sprintf(str, "process_Event()- gc_SetUserInfo(linedev=%ld) Failed configuring DTMF mode", port[index].ldev);
printandlog(index, GC_APIERR, NULL, str, 0);
Close_Telephony(11);
}
static int gc_set_channel_codecs(index)
{
int i, j, scope,rc;
IP_CAPABILITY ipcap;
GC_PARM_BLK *parmblkp = NULL;
char str[MAX_STRING_SIZE];
printandlog(index, MISC, NULL, "Specifying codecs", 0);
for (i = 0; i< port[index].num_codecs; i++) {
memset(&ipcap, 0, sizeof(IP_CAPABILITY));
/* First obtain value of transmit codec type from translation table */
for (j = 0; j< (sizeof(codecxlat) / sizeof(CODECXLAT)); j++) {
if (!strcmp(port[index].codec
.txcodec, codecxlat[j].codecname)) {
ipcap.capability = codecxlat[j].codecvalue;
break;
}
}
/* if not found, log error and exit */
if (ipcap.capability == 0) {
printf("Invalid codec type entry in %s\n", cfgfile);
Close_Telephony(23);
return(-1); // exit func due error
}
/* Specify TX codec, unless type is T.38 UDP which is bi-directional */
/* and handled separately as data codec. */
if (ipcap.capability != GCCAP_DATA_t38UDPFax)
{
ipcap.type = GCCAPTYPE_AUDIO;
ipcap.direction = IP_CAP_DIR_LCLTRANSMIT;
ipcap.extra.audio.frames_per_pkt = port[index].codec.txrate;
/* Set VAD if and only if supported by codec type */
if (codecxlat[j].isVADsupported == YES) {
/* If codec supports VAD, use setting from config file. */
/* Only check for "ON" for simplicity sake. */
ipcap.extra.audio.VAD = (strcmp(port[index].codec.txVAD, "ON") == 0);
}
else { /* VAD not supported */
ipcap.extra.audio.VAD = NO;
}
/* append the GC_PARM_BLK with the respective TX codec */
gc_util_insert_parm_ref(&parmblkp, GCSET_CHAN_CAPABILITY, IPPARM_LOCAL_CAPABILITY,
sizeof(IP_CAPABILITY), &ipcap);
/* Re-initialize for determining receive codec */
ipcap.capability = 0;
/* Next obtain value of receive codec type from translation table */
for (j = 0; j< (sizeof(codecxlat) / sizeof(CODECXLAT)); j++) {
if (!strcmp(port[index].codec.rxcodec, codecxlat[j].codecname)) {
ipcap.capability = codecxlat[j].codecvalue;
break;
}
}
/* If not found, log error and exit */
if (ipcap.capability == 0) {
printf("Invalid codec type entry in %s\n", cfgfile);
Close_Telephony(24);
return(-1); // exit func due error
}
ipcap.direction = IP_CAP_DIR_LCLRECEIVE;
ipcap.extra.audio.frames_per_pkt = port[index].codec.rxrate;
/* Set VAD if and only if supported by codec type */
if (codecxlat[j].isVADsupported)
{
/* string validation minimized for simplicity sake */
ipcap.extra.audio.VAD = (strcmp(port[index].codec.rxVAD, "ON") == 0);
}
else { /* VAD not supported */
ipcap.extra.audio.VAD = NO;
}
/* append the GC_PARM_BLK with the respective RX codec */
gc_util_insert_parm_ref(&parmblkp, GCSET_CHAN_CAPABILITY, IPPARM_LOCAL_CAPABILITY,
sizeof(IP_CAPABILITY), &ipcap);
}
else { /* else codec is T.38 UDP which is bi-directional data codec */
ipcap.type = GCCAPTYPE_RDATA;
ipcap.direction = IP_CAP_DIR_LCLTXRX;
ipcap.extra.data.max_bit_rate = 144;
/* append the GC_PARM_BLK with the T.38 codec */
gc_util_insert_parm_ref(&parmblkp, GCSET_CHAN_CAPABILITY, IPPARM_LOCAL_CAPABILITY,
sizeof(IP_CAPABILITY), &ipcap);
}
} /* end for loop for all codecs specified for device */
/* To interoperate with Microsoft Phoenix Version 5.0 Soft SIP phone,*/
/* we will set coders on SIP calls on a per call basis. Again, this */
/* is not required for other SIP clients. */
// SIP
scope = GC_SINGLECALL;
gc_util_insert_parm_val(&parmblkp, IPSET_DTMF, IPPARM_SUPPORT_DTMF_BITMASK,
sizeof(char), IP_DTMF_TYPE_INBAND_RTP);
rc = gc_SetUserInfo(GCTGT_GCLIB_CHAN, port[index].ldev, parmblkp, scope);
if (rc != GC_SUCCESS)
{
sprintf(str, "gc_set_channel_codecs() - gc_SetUserInfo(linedev=%ld) Failed when specifying coders", port[index].ldev);
printandlog(index, GC_APIERR, NULL, str, 0);
Close_Telephony(25);
return(-1); // exit func due error
}
gc_util_delete_parm_blk(parmblkp);
return(0);
} /* End of function */