/*****************************************************************************\
** **
-** PBX4Linux **
+** Linux Call Router **
** **
**---------------------------------------------------------------------------**
** Copyright: Andreas Eversberg **
#include <net_l2.h>
}
+#if 0
+#ifndef ISDN_PID_L2_B_USER
#define ISDN_PID_L2_B_USER 0x420000ff
+#endif
+#ifndef ISDN_PID_L3_B_USER
#define ISDN_PID_L3_B_USER 0x430000ff
+#endif
+#endif
+#ifndef ISDN_PID_L4_B_USER
#define ISDN_PID_L4_B_USER 0x440000ff
+#endif
/* used for udevice */
int entity = 0;
p_m_b_channel = 0;
p_m_b_exclusive = 0;
p_m_b_reserve = 0;
- p_m_jittercheck = 0;
p_m_delete = 0;
p_m_hold = 0;
p_m_txvol = p_m_rxvol = 0;
p_m_echo = 0;
p_m_tone = 0;
p_m_rxoff = 0;
- p_m_calldata = 0;
+ p_m_joindata = 0;
p_m_dtmf = !mISDNport->ifport->nodtmf;
p_m_timeout = 0;
p_m_timer = 0;
- /* audio from up */
- p_m_fromup_buffer_readp = 0;
- p_m_fromup_buffer_writep = 0;
+ /* audio */
+ p_m_load = 0;
+ p_m_last_tv_sec = 0;
/* crypt */
p_m_crypt = 0;
*d++ = c2;
mISDN_write(mISDNdevice, ctrl, mISDN_HEADER_LEN+ctrl->len, TIMEOUT_1SEC);
chan_trace_header(mISDNport, isdnport, "BCHANNEL control", DIRECTION_OUT);
- add_trace(trace_name, NULL, "%d", trace_value);
+ if (c1 == CMX_CONF_JOIN)
+ add_trace(trace_name, NULL, "0x%08x", trace_value);
+ else
+ add_trace(trace_name, NULL, "%d", trace_value);
end_trace();
}
goto stack_error;
chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL create stack", DIRECTION_OUT);
add_trace("channel", NULL, "%d", i+1+(i>=15));
- add_trace("stack", "id", "0x%8x", mISDNport->b_stid[i]);
- add_trace("stack", "address", "0x%8x", mISDNport->b_addr[i]);
+ add_trace("stack", "id", "0x%08x", mISDNport->b_stid[i]);
+ add_trace("stack", "address", "0x%08x", mISDNport->b_addr[i]);
end_trace();
return(1);
* subfunction for bchannel_event
* activate request
*/
-static void _bchannel_activate(struct mISDNport *mISDNport, int i)
+static void _bchannel_activate(struct mISDNport *mISDNport, int i, int activate)
{
iframe_t act;
/* activate bchannel */
- chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL activate", DIRECTION_OUT);
+ chan_trace_header(mISDNport, mISDNport->b_port[i], activate?(char*)"BCHANNEL activate":(char*)"BCHANNEL deactivate", DIRECTION_OUT);
add_trace("channel", NULL, "%d", i+1+(i>=15));
end_trace();
- act.prim = DL_ESTABLISH | REQUEST;
+ act.prim = (activate?DL_ESTABLISH:DL_RELEASE) | REQUEST;
act.addr = mISDNport->b_addr[i] | FLG_MSG_DOWN;
act.dinfo = 0;
act.len = 0;
/*
* subfunction for bchannel_event
- * deactivate
- */
-static void _bchannel_deactivate(struct mISDNport *mISDNport, int i)
-{
- iframe_t dact;
-
- chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL deactivate", DIRECTION_OUT);
- add_trace("channel", NULL, "%d", i+1+(i>=15));
- end_trace();
- dact.prim = DL_RELEASE | REQUEST;
- dact.addr = mISDNport->b_addr[i] | FLG_MSG_DOWN;
- dact.dinfo = 0;
- dact.len = 0;
- mISDN_write(mISDNdevice, &dact, mISDN_HEADER_LEN+dact.len, TIMEOUT_1SEC);
-}
-
-/*
- * subfunction for bchannel_event
* destroy stack
*/
static void _bchannel_destroy(struct mISDNport *mISDNport, int i)
chan_trace_header(mISDNport, mISDNport->b_port[i], "BCHANNEL remove stack", DIRECTION_OUT);
add_trace("channel", NULL, "%d", i+1+(i>=15));
- add_trace("stack", "id", "0x%8x", mISDNport->b_stid[i]);
- add_trace("stack", "address", "0x%8x", mISDNport->b_addr[i]);
+ add_trace("stack", "id", "0x%08x", mISDNport->b_stid[i]);
+ add_trace("stack", "address", "0x%08x", mISDNport->b_addr[i]);
end_trace();
/* remove our stack only if set */
- PDEBUG(DEBUG_BCHANNEL, "free stack (b_addr=0x%x)\n", mISDNport->b_addr[i]);
- mISDN_clear_stack(mISDNdevice, mISDNport->b_stid[i]);
if (mISDNport->b_addr[i])
+ {
+ PDEBUG(DEBUG_BCHANNEL, "free stack (b_addr=0x%x)\n", mISDNport->b_addr[i]);
+ mISDN_clear_stack(mISDNdevice, mISDNport->b_stid[i]);
mISDN_write_frame(mISDNdevice, buff, mISDNport->b_addr[i] | FLG_MSG_DOWN, MGR_DELLAYER | REQUEST, 0, 0, NULL, TIMEOUT_1SEC);
- mISDNport->b_addr[i] = 0;
+ mISDNport->b_addr[i] = 0;
+ }
}
case B_EVENT_ACTIVATE:
/* port must be linked in order to allow activation */
if (!mISDNport->b_port[i])
- {
- PERROR("SOFTWARE ERROR: bchannel must be linked to a Port class\n");
- exit(-1);
- }
+ FATAL("bchannel must be linked to a Port class\n");
switch(state)
{
case B_STATE_IDLE:
/* create stack and send activation request */
if (_bchannel_create(mISDNport, i))
{
- _bchannel_activate(mISDNport, i);
+ _bchannel_activate(mISDNport, i, 1);
state = B_STATE_ACTIVATING;
}
break;
} else
{
/* bchannel is active, but not used anymore (or has wrong stack config), so we deactivate */
- _bchannel_deactivate(mISDNport, i);
+ _bchannel_activate(mISDNport, i, 0);
state = B_STATE_DEACTIVATING;
}
break;
case B_EVENT_DEACTIVATE:
if (!mISDNport->b_port[i])
- {
- PERROR("SOFTWARE ERROR: bchannel must be linked to a Port class\n");
- exit(-1);
- }
+ FATAL("bchannel must be linked to a Port class\n");
switch(state)
{
case B_STATE_IDLE:
case B_STATE_ACTIVE:
/* bchannel is active, so we deactivate */
- _bchannel_deactivate(mISDNport, i);
+ _bchannel_activate(mISDNport, i, 0);
state = B_STATE_DEACTIVATING;
break;
/* bchannel is now deactivate, but is requied by Port class, so we reactivate */
if (_bchannel_create(mISDNport, i))
{
- _bchannel_activate(mISDNport, i);
+ _bchannel_activate(mISDNport, i, 1);
state = B_STATE_ACTIVATING;
}
}
p_m_b_index = i;
p_m_b_channel = channel;
p_m_b_exclusive = exclusive;
- p_m_jittercheck = 0;
/* reserve channel */
if (!p_m_b_reserve)
/*
* handler
+
+audio transmission procedure:
+-----------------------------
+
+* priority
+three sources of audio transmission:
+- crypto-data high priority
+- tones high priority (also high)
+- remote-data low priority
+
+* elapsed
+a variable that temporarily shows the number of samples elapsed since last transmission process.
+p_m_last_tv_* is used to store that last timestamp. this is used to calculate the time elapsed.
+
+* load
+a variable that is increased whenever data is transmitted.
+it is decreased while time elapses. it stores the number of samples that
+are currently loaded to dsp module.
+since clock in dsp module is the same clock for user space process, these
+times have no skew.
+
+* levels
+there are two levels:
+ISDN_LOAD will give the load that have to be kept in dsp.
+ISDN_MAXLOAD will give the maximum load before dropping.
+
+* procedure for low priority data
+see txfromup() for procedure
+in short: remote data is ignored during high priority tones
+
+* procedure for high priority data
+whenever load is below ISDN_LOAD, load is filled up to ISDN_LOAD
+if no more data is available, load becomes empty again.
+
+'load' variable:
+0 ISDN_LOAD ISDN_MAXLOAD
++--------------------+----------------------+
+| | |
++--------------------+----------------------+
+
+on empty load or on load below ISDN_LOAD, the load is inceased to ISDN_LOAD:
+0 ISDN_LOAD ISDN_MAXLOAD
++--------------------+----------------------+
+|TTTTTTTTTTTTTTTTTTTT| |
++--------------------+----------------------+
+
+on empty load, remote-audio causes the load with the remote audio to be increased to ISDN_LOAD.
+0 ISDN_LOAD ISDN_MAXLOAD
++--------------------+----------------------+
+|TTTTTTTTTTTTTTTTTTTTRRRRR |
++--------------------+----------------------+
+
*/
int PmISDN::handler(void)
{
struct message *message;
- int elapsed, length;
+ int elapsed = 0;
int ret;
- int inbuffer;
if ((ret = Port::handler()))
return(ret);
- inbuffer = (p_m_fromup_buffer_writep - p_m_fromup_buffer_readp) & FROMUP_BUFFER_MASK;
- /* send tone data to isdn device only if we have data */
- if (p_tone_name[0] || p_m_crypt_msg_loops || inbuffer)
+ /* get elapsed */
+ if (p_m_last_tv_sec)
{
- /* calculate how much to transmit */
- if (!p_last_tv_sec)
- {
- elapsed = ISDN_PRELOAD; /* preload for the first time */
- } else
- {
- elapsed = 8000 * (now_tv.tv_sec - p_last_tv_sec)
- + 8 * (now_tv.tv_usec/1000 - p_last_tv_msec);
- /* gap was greater preload, so only fill up to preload level */
- if (elapsed > ISDN_PRELOAD)
- {
- elapsed = ISDN_PRELOAD;
- }
- }
- if (elapsed >= ISDN_TRANSMIT)
+ elapsed = 8000 * (now_tv.tv_sec - p_m_last_tv_sec)
+ + 8 * (now_tv.tv_usec/1000 - p_m_last_tv_msec);
+ } else
+ {
+ /* set clock of first process ever in this instance */
+ p_m_last_tv_sec = now_tv.tv_sec;
+ p_m_last_tv_msec = now_tv.tv_usec/1000;
+ }
+ /* process only if we have a minimum of samples, to make packets not too small */
+ if (elapsed >= ISDN_TRANSMIT)
+ {
+ /* set clock of last process! */
+ p_m_last_tv_sec = now_tv.tv_sec;
+ p_m_last_tv_msec = now_tv.tv_usec/1000;
+
+ /* update load */
+ if (elapsed < p_m_load)
+ p_m_load -= elapsed;
+ else
+ p_m_load = 0;
+
+ /* to send data, tone must be active OR crypt messages must be on */
+ if ((p_tone_name[0] || p_m_crypt_msg_loops) && p_m_load < ISDN_LOAD)
{
- unsigned char buf[mISDN_HEADER_LEN+ISDN_PRELOAD];
+ int tosend = ISDN_LOAD - p_m_load, length;
+ unsigned char buf[mISDN_HEADER_LEN+tosend];
iframe_t *frm = (iframe_t *)buf;
unsigned char *p = buf+mISDN_HEADER_LEN;
- p_last_tv_sec = now_tv.tv_sec;
- p_last_tv_msec = now_tv.tv_usec/1000;
-
- /* read tones or fill with silence */
- length = read_audio(p, elapsed);
-
- /*
- * get data from up
- * the fromup_buffer data is written to the beginning of the buffer
- * the part that is filles with tones (length) is skipped, so tones have priority
- * the length value is increased by the number of data copied from fromup_buffer
- */
- if (inbuffer)
- {
- printf("nix\n");
- /* inbuffer might be less than we skip due to audio */
- if (inbuffer <= length)
- {
- /* clear buffer */
- p_m_fromup_buffer_readp = p_m_fromup_buffer_writep;
- inbuffer = 0;
- } else
- {
- /* skip what we already have with tones */
- p_m_fromup_buffer_readp = (p_m_fromup_buffer_readp + length) & FROMUP_BUFFER_MASK;
- inbuffer -= length;
- p += length;
- }
- /* if we have more in buffer, than we send this time */
- if (inbuffer > (elapsed-length))
- inbuffer = elapsed - length;
- /* set length to what we actually have */
- length = length + inbuffer;
- /* now fill up with fromup_buffer */
- while (inbuffer)
- {
- *p++ = p_m_fromup_buffer[p_m_fromup_buffer_readp];
- p_m_fromup_buffer_readp = (p_m_fromup_buffer_readp + 1) & FROMUP_BUFFER_MASK;
- inbuffer--;
- }
- }
-
- /* overwrite buffer with crypto stuff */
- if (p_m_crypt_msg_loops)
+ /* copy crypto loops */
+ while (p_m_crypt_msg_loops && tosend)
{
- printf("nix2\n");
- /* send pending message */
- int tosend;
-
/* how much do we have to send */
- tosend = p_m_crypt_msg_len - p_m_crypt_msg_current;
- if (tosend > elapsed)
- tosend = elapsed;
+ length = p_m_crypt_msg_len - p_m_crypt_msg_current;
- /* our length increases, if less */
- if (length < tosend)
+ /* clip tosend */
+ if (length > tosend)
length = tosend;
/* copy message (part) to buffer */
- memcpy(p, p_m_crypt_msg+p_m_crypt_msg_current, tosend);
- p_m_crypt_msg_current += tosend;
+ memcpy(p, p_m_crypt_msg+p_m_crypt_msg_current, length);
+
+ /* new position */
+ p_m_crypt_msg_current += length;
if (p_m_crypt_msg_current == p_m_crypt_msg_len)
{
+ /* next loop */
p_m_crypt_msg_current = 0;
p_m_crypt_msg_loops--;
}
+
+ /* new length */
+ tosend -= length;
+ }
+
+ /* copy tones */
+ if (p_tone_name[0] && tosend)
+ {
+ tosend -= read_audio(p, tosend);
}
+
+ /* send data */
frm->prim = DL_DATA | REQUEST;
frm->addr = p_m_mISDNport->b_addr[p_m_b_index] | FLG_MSG_DOWN;
frm->dinfo = 0;
- frm->len = length;
- mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
-
- if (p_debug_nothingtosend)
- {
- p_debug_nothingtosend = 0;
- PDEBUG((DEBUG_PORT | DEBUG_BCHANNEL), "PmISDN(%s) start sending, because we have tones and/or remote audio.\n", p_name);
- }
- return(1);
+ frm->len = ISDN_LOAD - p_m_load - tosend;
+ if (frm->len)
+ mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
+ p_m_load += frm->len;
}
- } else
- {
- if (!p_debug_nothingtosend)
- {
- p_debug_nothingtosend = 1;
- PDEBUG((DEBUG_PORT | DEBUG_BCHANNEL), "PmISDN(%s) stop sending, because we have only silence.\n", p_name);
- }
}
// NOTE: deletion is done by the child class
message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TIMEOUT);
message->param.state = p_state;
message_put(message);
+ return(1);
}
- return(1);
}
return(0); /* nothing done */
unsigned char *p;
int l;
unsigned long cont;
-// iframe_t rsp; /* response to possible indication */
-#if 0
-#warning BCHANNEL-DEBUG
-{
- // check if we are part of all ports */
- class Port *port = port_first;
- while(port)
- {
- if (port==this)
- break;
- port=port->next;
- }
- if (!port)
- {
- PERROR_RUNTIME("**************************************************\n");
- PERROR_RUNTIME("*** BCHANNEL-DEBUG: !this! is not in list of ports\n");
- PERROR_RUNTIME("**************************************************\n");
- return;
- }
-}
-#endif
-
if (frm->prim == (PH_CONTROL | INDICATION))
{
return;
}
cont = *((unsigned long *)&frm->data.p);
- // PDEBUG(DEBUG_PORT, "PmISDN(%s) received a PH_CONTROL INDICATION 0x%x\n", p_name, cont);
if ((cont&(~DTMF_TONE_MASK)) == DTMF_TONE_VAL)
{
chan_trace_header(p_m_mISDNport, this, "BCHANNEL control", DIRECTION_IN);
case CMX_TX_DATA:
if (!p_m_txdata)
{
- /* if rx is off, it may happen that fifos send us pending informations, we just ignore them */
- PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring rx data, because 'txdata' is turned off\n", p_name);
+ /* if tx is off, it may happen that fifos send us pending informations, we just ignore them */
+ PDEBUG(DEBUG_BCHANNEL, "PmISDN(%s) ignoring tx data, because 'txdata' is turned off\n", p_name);
return;
}
if (p_record)
end_trace();
}
return;
- }
+ }
if (frm->prim != (PH_DATA | INDICATION) && frm->prim != (DL_DATA | INDICATION))
{
PERROR("Bchannel received unknown primitve: 0x%x\n", frm->prim);
}
/* calls will not process any audio data unless
- * the call is connected OR tones feature is enabled.
+ * the call is connected OR interface features audio during call setup.
*/
+//printf("%d -> %d prim=%x joindata=%d tones=%d\n", p_serial, ACTIVE_EPOINT(p_epointlist), frm->prim, p_m_joindata, p_m_mISDNport->earlyb);
+#ifndef DEBUG_COREBRIDGE
if (p_state!=PORT_STATE_CONNECT
- && !p_m_mISDNport->tones)
- return;
-
-#if 0
- /* the bearer capability must be audio in order to send and receive
- * audio prior or after connect.
- */
- if (!(p_bearerinfo.capability&CLASS_CAPABILITY_AUDIO) && p_state!=PORT_STATE_CONNECT)
+ && !p_m_mISDNport->earlyb)
return;
#endif
p = (unsigned char *)&frm->data.p;
/* send data to epoint */
- if (p_m_calldata && ACTIVE_EPOINT(p_epointlist)) /* only if we have an epoint object */
+ if (p_m_joindata && ACTIVE_EPOINT(p_epointlist)) /* only if we have an epoint object */
{
-//printf("we are port %s and sending to epoint %d\n", p_m_cardname, p_epoint->serial);
length_temp = frm->len;
data_temp = p;
while(length_temp)
length_temp -= sizeof(message->param.data.data);
}
}
-#if 0
- /* response to the data indication */
- rsp.prim = frm->prim & 0xfffffffc | RESPONSE;
- rsp.addr = frm->addr & INST_ID_MASK | FLG_MSG_DOWN;
- rsp.dinfo = frm->dinfo;
- rsp.len = 0;
- mISDN_write(mISDNdevice, &rsp, mISDN_HEADER_LEN+rsp.len, TIMEOUT_1SEC);
-//PDEBUG(DEBUG_ISDN, "written %d bytes.\n", length);
-#endif
}
if (p_m_b_channel)
if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], VOL_CHANGE_TX, p_m_txvol, "DSP-TXVOL", p_m_txvol);
- }
+ } else
+ PDEBUG(DEBUG_BCHANNEL, "we already have tx-volume shift=%d.\n", p_m_rxvol);
if (p_m_rxvol != param->mISDNsignal.rxvol)
{
p_m_rxvol = param->mISDNsignal.rxvol;
if (p_m_b_channel)
if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], VOL_CHANGE_RX, p_m_rxvol, "DSP-RXVOL", p_m_rxvol);
- }
+ } else
+ PDEBUG(DEBUG_BCHANNEL, "we already have rx-volume shift=%d.\n", p_m_rxvol);
break;
case mISDNSIGNAL_CONF:
if (p_m_b_channel)
if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], (p_m_conf)?CMX_CONF_JOIN:CMX_CONF_SPLIT, p_m_conf, "DSP-CONF", p_m_conf);
- }
+ } else
+ PDEBUG(DEBUG_BCHANNEL, "we already have conf=%d.\n", p_m_conf);
/* we must set, even if currently tone forbids conf */
p_m_conf = param->mISDNsignal.conf;
//if (dddebug) PDEBUG(DEBUG_ISDN, "dddebug = %d\n", dddebug->type);
break;
- case mISDNSIGNAL_CALLDATA:
- if (p_m_calldata != param->mISDNsignal.calldata)
+ case mISDNSIGNAL_JOINDATA:
+ if (p_m_joindata != param->mISDNsignal.joindata)
{
- p_m_calldata = param->mISDNsignal.calldata;
- PDEBUG(DEBUG_BCHANNEL, "we change to calldata=%d.\n", p_m_calldata);
- }
+ p_m_joindata = param->mISDNsignal.joindata;
+ PDEBUG(DEBUG_BCHANNEL, "we change to joindata=%d.\n", p_m_joindata);
+ } else
+ PDEBUG(DEBUG_BCHANNEL, "we already have joindata=%d.\n", p_m_joindata);
break;
case mISDNSIGNAL_DELAY:
if (p_m_b_channel)
if (p_m_mISDNport->b_state[p_m_b_index] == B_STATE_ACTIVE)
ph_control(p_m_mISDNport, this, p_m_mISDNport->b_addr[p_m_b_index], p_m_delay?CMX_DELAY:CMX_JITTER, p_m_delay, "DSP-DELAY", p_m_delay);
- }
+ } else
+ PDEBUG(DEBUG_BCHANNEL, "we already have delay=%d.\n", p_m_delay);
break;
default:
if (isdnport)
{
/* call bridges in user space OR crypto OR recording */
- if (isdnport->p_m_calldata || isdnport->p_m_crypt_msg_loops || isdnport->p_m_crypt_listen || isdnport->p_record)
+ if (isdnport->p_m_joindata || isdnport->p_m_crypt_msg_loops || isdnport->p_m_crypt_listen || isdnport->p_record)
{
/* rx IS required */
if (isdnport->p_m_rxoff)
free_msg(msg);
if (errno == EAGAIN)
return(0);
- PERROR("FATAL ERROR: failed to do mISDN_read()\n");
- exit(-1);
+ FATAL("Failed to do mISDN_read()\n");
}
if (!ret)
{
}
if (i == mISDNport->b_num)
{
- PERROR("unhandled b-message (address 0x%x).\n", frm->addr);
+ PERROR("unhandled b-message (prim 0x%x address 0x%x).\n", frm->prim, frm->addr);
break;
}
if (mISDNport->b_port[i])
}
if (i == mISDNport->b_num)
{
- PERROR("unhandled b-establish (address 0x%x).\n", frm->addr);
+ PERROR("unhandled b-establish (prim 0x%x address 0x%x).\n", frm->prim, frm->addr);
break;
}
bchannel_event(mISDNport, i, B_EVENT_ACTIVATED);
}
if (i == mISDNport->b_num)
{
- PERROR("unhandled b-release (address 0x%x).\n", frm->addr);
+ PERROR("unhandled b-release (prim 0x%x address 0x%x).\n", frm->prim, frm->addr);
break;
}
bchannel_event(mISDNport, i, B_EVENT_DEACTIVATED);
if (ret < (int)mISDN_HEADER_LEN)
{
noentity:
- fprintf(stderr, "cannot request MGR_NEWENTITY from mISDN. Exitting due to software bug.");
- exit(-1);
+ FATAL("Cannot request MGR_NEWENTITY from mISDN. Exitting due to software bug.");
}
entity = frm->dinfo & 0xffff;
if (!entity)
mISDNportp = &mISDNport_first;
while(*mISDNportp)
mISDNportp = &((*mISDNportp)->next);
- mISDNport = (struct mISDNport *)calloc(1, sizeof(struct mISDNport));
- if (!mISDNport)
- {
- PERROR("Cannot alloc mISDNport structure\n");
- return(NULL);
- }
+ mISDNport = (struct mISDNport *)MALLOC(sizeof(struct mISDNport));
pmemuse++;
- memset(mISDNport, 0, sizeof(mISDNport));
*mISDNportp = mISDNport;
/* allocate ressources of port */
/* phd */
msg_queue_purge(&nst->down_queue);
if (nst->phd_down_msg)
- free(nst->phd_down_msg);
+ FREE(nst->phd_down_msg, 0);
}
}
}
if (mISDNportp)
- {
- PERROR("software error, mISDNport not in list\n");
- exit(-1);
- }
+ FATAL("mISDNport not in list\n");
- memset(mISDNport, 0, sizeof(struct mISDNport));
- free(mISDNport);
+ FREE(mISDNport, sizeof(struct mISDNport));
pmemuse--;
/* close mISDNdevice, if no port */
if ((device = mISDN_open()) < 0)
{
fprintf(stderr, "cannot open mISDN device ret=%d errno=%d (%s) Check for mISDN modules!\nAlso did you create \"/dev/mISDN\"? Do: \"mknod /dev/mISDN c 46 0\"\n", device, errno, strerror(errno));
- exit(-1);
+ exit(EXIT_FAILURE);
}
/* get number of stacks */
if (stinf->pid.protocol[p])
{
useable = 0;
- printf(" -> Layer %d protocol 0x%08x is detected, but not allowed for NT lib.\n", p, stinf->pid.protocol[p]);
+ printf(" -> Layer %d protocol 0x%08x is detected, port already in use by another application.\n", p, stinf->pid.protocol[p]);
}
p++;
}
if (stinf->pid.protocol[p])
{
useable = 0;
- printf(" -> Layer %d protocol 0x%08x is detected, but not allowed for TE lib.\n", p, stinf->pid.protocol[p]);
+ printf(" -> Layer %d protocol 0x%08x is detected, port already in use by another application.\n", p, stinf->pid.protocol[p]);
}
p++;
}
printf(" - %d B-channels\n", stinf->childcnt);
if (!useable)
- printf(" * Port NOT useable for PBX\n");
+ printf(" * Port NOT useable for LCR\n");
printf("--------\n");
/* close mISDN */
if ((err = mISDN_close(device)))
- {
- fprintf(stderr, "mISDN_close() failed: err=%d '%s'\n", err, strerror(err));
- exit(-1);
- }
+ FATAL("mISDN_close() failed: err=%d '%s'\n", err, strerror(err));
}
*/
void PmISDN::txfromup(unsigned char *data, int length)
{
- int avail;
- /* no data */
- if (!length)
- return;
+ unsigned char buf[mISDN_HEADER_LEN+((length>ISDN_LOAD)?length:ISDN_LOAD)];
+ iframe_t *frm = (iframe_t *)buf;
- /* get free samples in buffer */
- avail = ((p_m_fromup_buffer_readp - p_m_fromup_buffer_writep - 1) & FROMUP_BUFFER_MASK);
- if (avail < length)
- {
- PDEBUG(DEBUG_PORT, "Port(%d): fromup_buffer overflows, this shall not happen under normal conditions\n", p_serial);
+ /* configure frame */
+ frm->prim = DL_DATA | REQUEST;
+ frm->addr = p_m_mISDNport->b_addr[p_m_b_index] | FLG_MSG_DOWN;
+ frm->dinfo = 0;
+
+ /* check if high priority tones exist
+ * ignore data in this case
+ */
+ if (p_tone_name[0] || p_m_crypt_msg_loops)
return;
- }
- /* write data to buffer and return */
- while(length)
+ /* preload procedure
+ * if transmit buffer in DSP module is empty,
+ * preload it to DSP_LOAD to prevent jitter gaps.
+ */
+ if (p_m_load==0 && ISDN_LOAD>0)
{
- p_m_fromup_buffer[p_m_fromup_buffer_writep] = *data++;
- p_m_fromup_buffer_writep = (p_m_fromup_buffer_writep + 1) & FROMUP_BUFFER_MASK;
- length--;
+
+ memcpy(buf+mISDN_HEADER_LEN, data, ISDN_LOAD);
+ frm->len = ISDN_LOAD;
+ mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
+ p_m_load += frm->len;
}
- return; // must return, because length is 0
+
+ /* drop if load would exceed ISDN_MAXLOAD
+ * this keeps the delay not too high
+ */
+ if (p_m_load+length > ISDN_MAXLOAD)
+ return;
+
+ /* load data to buffer
+ */
+ memcpy(buf+mISDN_HEADER_LEN, data, length);
+ frm->len = length;
+ mISDN_write(mISDNdevice, frm, mISDN_HEADER_LEN+frm->len, TIMEOUT_1SEC);
+ p_m_load += frm->len;
}