Call is initiated by LCR:
If a call is received from LCR, a MESSAGE_NEWREF is received first.
+The ref_was_assigned ist set to 1.
A new chan_call instance is created. The call reference (ref) is given by
-MESSAGE_NEWREF. The state is CHAN_LCR_STATE_IN_PREPARE.
+the received MESSAGE_NEWREF. The state is CHAN_LCR_STATE_IN_PREPARE.
After receiving MESSAGE_SETUP from LCR, the ast_channel instance is created
using ast_channel_alloc(1). The setup information is given to asterisk.
The new Asterisk instance pointer (ast) is stored to chan_call structure.
If a call is requested from Asterisk, a new chan_call instance is created.
The new Asterisk instance pointer (ast) is stored to chan_call structure.
The current call ref is set to 0, the state is CHAN_LCR_STATE_OUT_PREPARE.
-If the call is received (lcr_call) A MESSASGE_NEWREF is sent to LCR requesting
+If the call is received (lcr_call) A MESSAGE_NEWREF is sent to LCR requesting
a new call reference (ref).
+The ref_was_assigned ist set to 1.
Further dialing information is queued.
After the new callref is received by special MESSAGE_NEWREF reply, new ref
is stored in the chan_call structure.
A MESSAGE_RELEASE is received with the call reference (ref) to be released.
The current ref is set to 0, to indicate released reference.
+The ref_was_assigned==1 shows that there is no other ref to be assigned.
The state changes to CHAN_LCR_STATE_RELEASE.
ast_queue_hangup() is called, if asterisk instance (ast) exists, if not,
the chan_call instance is destroyed.
a MESSAGE_RELEASE is sent to LCR and the chan_call instance is destroyed.
If the ref is 0 and the state is not CHAN_LCR_STATE_RELEASE, the new state is
set to CHAN_LCR_STATE_RELEASE.
+The ref_was_assigned==0 shows that a ref is still requested.
Later, if the MESSAGE_NEWREF reply is received, a MESSAGE_RELEASE is sent to
LCR and the chan_call instance is destroyed.
If the ref is 0 and the state is CHAN_LCR_STATE_RELEASE, see the proceedure
"Call is released by LCR".
+
+Locking issues:
+
+The deadlocking problem:
+
+- chan_lcr locks chan_lock and waits inside ast_queue_xxxx() for ast_channel
+to be unlocked.
+- ast_channel thread locks ast_channel and calls a tech function and waits
+there for chan_lock to be unlocked.
+
+The solution:
+
+Never call ast_queue_xxxx() if ast_channel is not locked and don't wait until
+ast_channel can be locked. All messages to asterisk are queued inside call
+instance and will be handled using a try-lock to get ast_channel lock.
+If it succeeds to lock ast_channel, the ast_queue_xxxx can safely called even
+if the lock is incremented and decremented there.
+
+Exception: Calling ast_queue_frame inside ast->tech->read is safe, because
+it is called from ast_channel process which has already locked ast_channel.
+
*/
#include <stdio.h>
#include <semaphore.h>
+#define HAVE_ATTRIBUTE_always_inline 1
+#define HAVE_ARPA_INET_H 1
+#define HAVE_TIMERSUB 1
+
+#include <asterisk/compiler.h>
+#include <asterisk/buildopts.h>
#include <asterisk/module.h>
#include <asterisk/channel.h>
#include <asterisk/config.h>
*/
struct chan_call *call_first;
-struct chan_call *find_call_ref(unsigned int ref)
-{
- struct chan_call *call = call_first;
-
- while(call)
- {
- if (call->ref == ref)
- break;
- call = call->next;
- }
- return(call);
-}
-
-#if 0
-struct chan_call *find_call_ast(struct ast_channel *ast)
-{
- struct chan_call *call = call_first;
-
- while(call)
- {
- if (call->ast == ast)
- break;
- call = call->next;
- }
- return(call);
-}
+/*
+ * find call by ref
+ * special case: 0: find new ref, that has not been assigned a ref yet
+ */
-struct chan_call *find_call_handle(unsigned int handle)
+struct chan_call *find_call_ref(unsigned int ref)
{
struct chan_call *call = call_first;
-
+ int assigned = (ref > 0);
+
while(call)
{
- if (call->bchannel_handle == handle)
+ if (call->ref == ref && call->ref_was_assigned == assigned)
break;
call = call->next;
}
return(call);
}
-#endif
void free_call(struct chan_call *call)
{
free_call(*callp);
return(NULL);
}
+ fcntl((*callp)->pipe[0], F_SETFL, O_NONBLOCK);
CDEBUG(*callp, NULL, "Call instance allocated.\n");
return(*callp);
}
-
unsigned short new_bridge_id(void)
{
struct chan_call *call;
break;
case 't':
if (opt[1] != '\0') {
- CERROR(call, call->ast, "Option 't' (transparent) expects no parameter.\n", opt);
+ CERROR(call, call->ast, "Option 't' (no_dsp) expects no parameter.\n", opt);
break;
}
- CDEBUG(call, call->ast, "Option 't' (transparent).\n");
- if (!call->transparent) {
- call->transparent = 1;
+ CDEBUG(call, call->ast, "Option 't' (no dsp).\n");
+ if (!call->nodsp) {
+ call->nodsp = 1;
newmode = 1;
}
break;
if (call->bchannel)
bchannel_pipeline(call->bchannel, call->pipeline);
break;
-#if 0
+ case 'r':
+ if (opt[1] != '\0') {
+ CERROR(call, call->ast, "Option 'r' (re-buffer 160 bytes) expects no parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'r' (re-buffer 160 bytes)");
+ call->rebuffer = 1;
+ break;
case 's':
if (opt[1] != '\0') {
CERROR(call, call->ast, "Option 's' (inband DTMF) expects no parameter.\n", opt);
}
CDEBUG(call, call->ast, "Option 's' (inband DTMF).\n");
call->inband_dtmf = 1;
-todo
break;
-#endif
case 'v':
if (opt[1] != 'r' && opt[1] != 't') {
CERROR(call, call->ast, "Option 'v' (volume) expects parameter.\n", opt);
/* re-open, if bchannel is created */
if (call->bchannel && call->bchannel->b_sock > -1) {
bchannel_destroy(call->bchannel);
- if (bchannel_create(call->bchannel, ((call->transparent)?1:0) + ((call->hdlc)?2:0)))
+ if (bchannel_create(call->bchannel, ((call->nodsp)?1:0) + ((call->hdlc)?2:0)))
bchannel_activate(call->bchannel, 1);
}
}
}
switch(ast->cid.cid_pres & AST_PRES_RESTRICTION)
{
- case AST_PRES_ALLOWED:
- newparam.setup.callerinfo.present = INFO_PRESENT_ALLOWED;
- break;
case AST_PRES_RESTRICTED:
newparam.setup.callerinfo.present = INFO_PRESENT_RESTRICTED;
break;
case AST_PRES_UNAVAILABLE:
newparam.setup.callerinfo.present = INFO_PRESENT_NOTAVAIL;
break;
+ case AST_PRES_ALLOWED:
default:
- newparam.setup.callerinfo.present = INFO_PRESENT_NULL;
+ newparam.setup.callerinfo.present = INFO_PRESENT_ALLOWED;
}
switch(ast->cid.cid_ton)
{
newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
}
newparam.setup.capainfo.bearer_capa = ast->transfercapability;
- newparam.setup.capainfo.bearer_info1 = (options.law=='a')?3:2;
newparam.setup.capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
+ if (call->hdlc)
+ newparam.setup.capainfo.source_mode = B_MODE_HDLC;
+ else {
+ newparam.setup.capainfo.source_mode = B_MODE_TRANSPARENT;
+ newparam.setup.capainfo.bearer_info1 = (options.law=='a')?3:2;
+ }
newparam.setup.capainfo.hlc = INFO_HLC_NONE;
newparam.setup.capainfo.exthlc = INFO_HLC_NONE;
send_message(MESSAGE_SETUP, call->ref, &newparam);
/* check bridge */
if (!call) return;
if (!call->bridge_call) return;
- CDEBUG(call, NULL, "Sending message due briding.\n");
+ CDEBUG(call, NULL, "Sending message due bridging.\n");
send_message(message_type, call->bridge_call->ref, param);
}
{
int cause, ret;
union parameter newparam;
+ char *exten = ast->exten;
+ if (!*exten)
+ exten = "s";
- CDEBUG(call, ast, "Try to start pbx. (exten=%s context=%s complete=%s)\n", ast->exten, ast->context, complete?"yes":"no");
+ CDEBUG(call, ast, "Try to start pbx. (exten=%s context=%s complete=%s)\n", exten, ast->context, complete?"yes":"no");
if (complete)
{
/* if not match */
- if (!ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
+ if (!ast_canmatch_extension(ast, ast->context, exten, 1, call->oad))
{
- CDEBUG(call, ast, "Got 'sending complete', but extension '%s' will not match at context '%s' - releasing.\n", ast->exten, ast->context);
+ CDEBUG(call, ast, "Got 'sending complete', but extension '%s' will not match at context '%s' - releasing.\n", exten, ast->context);
cause = 1;
goto release;
}
- if (!ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad))
+ if (!ast_exists_extension(ast, ast->context, exten, 1, call->oad))
{
- CDEBUG(call, ast, "Got 'sending complete', but extension '%s' would match at context '%s', if more digits would be dialed - releasing.\n", ast->exten, ast->context);
+ CDEBUG(call, ast, "Got 'sending complete', but extension '%s' would match at context '%s', if more digits would be dialed - releasing.\n", exten, ast->context);
cause = 28;
goto release;
}
goto start;
}
- if (ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
+ if (ast_canmatch_extension(ast, ast->context, exten, 1, call->oad))
{
/* send setup acknowledge to lcr */
if (call->state != CHAN_LCR_STATE_IN_DIALING) {
call->state = CHAN_LCR_STATE_IN_DIALING;
/* if match, start pbx */
- if (ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad)) {
+ if (ast_exists_extension(ast, ast->context, exten, 1, call->oad)) {
CDEBUG(call, ast, "Extensions matches.\n");
goto start;
}
return;
}
+ if (!*ast->exten) {
+ /* if can match */
+ CDEBUG(call, ast, "There is no 's' extension (and we tried to match it implicitly). Extensions may match, if more digits are dialed.\n");
+ return;
+ }
+
/* if not match */
cause = 1;
release:
goto release;
}
call->pbx_started = 1;
- return;
+ ast_setstate(ast, AST_STATE_RING);
}
/*
}
ast->transfercapability = param->setup.capainfo.bearer_capa;
/* enable hdlc if transcap is data */
- if (ast->transfercapability == INFO_BC_DATAUNRESTRICTED
- || ast->transfercapability == INFO_BC_DATARESTRICTED
- || ast->transfercapability == INFO_BC_VIDEO)
+ if (param->setup.capainfo.source_mode == B_MODE_HDLC)
call->hdlc = 1;
strncpy(call->oad, numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international), sizeof(call->oad)-1);
/* change state */
call->state = CHAN_LCR_STATE_IN_SETUP;
- lcr_start_pbx(call, ast, param->setup.dialinginfo.sending_complete);
+ if (!call->pbx_started)
+ lcr_start_pbx(call, ast, param->setup.dialinginfo.sending_complete);
}
/*
/* change state */
call->state = CHAN_LCR_STATE_OUT_PROCEEDING;
- /* send event to asterisk */
+ /* queue event for asterisk */
if (call->ast && call->pbx_started)
- ast_queue_control(call->ast, AST_CONTROL_PROCEEDING);
+ strncat(call->queue_string, "P", sizeof(call->queue_string)-1);
}
/*
/* change state */
call->state = CHAN_LCR_STATE_OUT_ALERTING;
- /* send event to asterisk */
+ /* queue event to asterisk */
if (call->ast && call->pbx_started)
- ast_queue_control(call->ast, AST_CONTROL_RINGING);
+ strncat(call->queue_string, "R", sizeof(call->queue_string)-1);
}
/*
}
/* copy connectinfo */
memcpy(&call->connectinfo, ¶m->connectinfo, sizeof(struct connect_info));
- /* send event to asterisk */
+ /* queue event to asterisk */
if (call->ast && call->pbx_started)
- ast_queue_control(call->ast, AST_CONTROL_ANSWER);
+ strncat(call->queue_string, "A", sizeof(call->queue_string)-1);
}
/*
call->ref = 0;
/* change to release state */
call->state = CHAN_LCR_STATE_RELEASE;
- /* release asterisk */
+ /* queue release asterisk */
if (ast)
{
ast->hangupcause = call->cause;
if (call->pbx_started)
- ast_queue_hangup(ast);
+ strcpy(call->queue_string, "H"); // overwrite other indications
else {
ast_hangup(ast); // call will be destroyed here
}
}
/*
- * incoming setup acknowledge from LCR
+ * incoming release from LCR
*/
static void lcr_in_release(struct chan_call *call, int message_type, union parameter *param)
{
call->cause = param->disconnectinfo.cause;
call->location = param->disconnectinfo.location;
}
- /* if we have an asterisk instance, send hangup, else we are done */
+ /* if we have an asterisk instance, queue hangup, else we are done */
if (ast)
{
ast->hangupcause = call->cause;
if (call->pbx_started)
- ast_queue_hangup(ast);
+ strcpy(call->queue_string, "H");
else {
ast_hangup(ast); // call will be destroyed here
}
static void lcr_in_information(struct chan_call *call, int message_type, union parameter *param)
{
struct ast_channel *ast = call->ast;
- struct ast_frame fr;
- char *p;
CDEBUG(call, call->ast, "Incoming information from LCR. (dialing=%s)\n", param->information.id);
return;
}
- /* copy digits */
- p = param->information.id;
- if (call->state == CHAN_LCR_STATE_IN_DIALING && *p)
- {
- CDEBUG(call, call->ast, "Asterisk is started, sending DTMF frame.\n");
- while (*p)
- {
- /* send digit to asterisk */
- memset(&fr, 0, sizeof(fr));
- fr.frametype = AST_FRAME_DTMF;
- fr.subclass = *p;
- fr.delivery = ast_tv(0, 0);
- ast_queue_frame(call->ast, &fr);
- p++;
- }
+ /* change dailing state after setup */
+ if (call->state == CHAN_LCR_STATE_IN_SETUP) {
+ CDEBUG(call, call->ast, "Changing from SETUP to DIALING state.\n");
+ call->state = CHAN_LCR_STATE_IN_DIALING;
+// ast_setstate(ast, AST_STATE_DIALING);
}
+
+ /* queue digits */
+ if (call->state == CHAN_LCR_STATE_IN_DIALING && param->information.id[0])
+ strncat(call->queue_string, param->information.id, sizeof(call->queue_string)-1);
+
/* use bridge to forware message not supported by asterisk */
if (call->state == CHAN_LCR_STATE_CONNECT) {
- CDEBUG(call, call->ast, "Call is connected, briding.\n");
+ CDEBUG(call, call->ast, "Call is connected, bridging.\n");
bridge_message_if_bridged(call, message_type, param);
}
}
void lcr_in_dtmf(struct chan_call *call, int val)
{
struct ast_channel *ast = call->ast;
- struct ast_frame fr;
+ char digit[2];
if (!ast)
return;
if (!call->pbx_started)
return;
- CDEBUG(call, call->ast, "Forwarding DTMF digit '%c' to Asterisk.\n", val);
-
- /* send digit to asterisk */
- memset(&fr, 0, sizeof(fr));
- fr.frametype = AST_FRAME_DTMF;
- fr.subclass = val;
- fr.delivery = ast_tv(0, 0);
- ast_queue_frame(call->ast, &fr);
+ CDEBUG(call, call->ast, "Recognised DTMF digit '%c'.\n", val);
+ digit[0] = val;
+ digit[1] = '\0';
+ strncat(call->queue_string, digit, sizeof(call->queue_string)-1);
}
/*
switch(param->bchannel.type)
{
case BCHANNEL_ASSIGN:
- CDEBUG(NULL, NULL, "Received BCHANNEL_ASSIGN message. (handle=%08lx)\n", param->bchannel.handle);
+ CDEBUG(NULL, NULL, "Received BCHANNEL_ASSIGN message. (handle=%08lx) for ref %d\n", param->bchannel.handle, ref);
if ((bchannel = find_bchannel_handle(param->bchannel.handle)))
{
CERROR(NULL, NULL, "bchannel handle %x already assigned.\n", (int)param->bchannel.handle);
bchannel_join(bchannel, call->bridge_id);
}
/* create only, if call exists, othewhise it bchannel is freed below... */
- if (bchannel_create(bchannel, ((call->transparent)?1:0) + ((call->hdlc)?2:0)))
+ if (bchannel_create(bchannel, ((call->nodsp)?1:0) + ((call->hdlc)?2:0)))
bchannel_activate(bchannel, 1);
}
/* acknowledge */
call->state = CHAN_LCR_STATE_IN_PREPARE;
/* set ref */
call->ref = ref;
+ call->ref_was_assigned = 1;
/* wait for setup (or release from asterisk) */
} else
{
}
/* store new ref */
call->ref = ref;
+ call->ref_was_assigned = 1;
/* send pending setup info */
if (call->state == CHAN_LCR_STATE_OUT_PREPARE)
send_setup_to_lcr(call);
goto again;
}
CDEBUG(call, call->ast, "Queue call release, because Asterisk channel is running.\n");
- ast_queue_hangup(call->ast);
+ strcpy(call->queue_string, "H");
call = call->next;
}
int open_socket(void)
{
int ret;
- char *socket_name = SOCKET_NAME;
int conn;
struct sockaddr_un sock_address;
unsigned int on = 1;
/* set socket address and name */
memset(&sock_address, 0, sizeof(sock_address));
sock_address.sun_family = PF_UNIX;
- strcpy(sock_address.sun_path, socket_name);
+ sprintf(sock_address.sun_path, SOCKET_NAME, options.lock);
/* connect socket */
if ((conn = connect(lcr_sock, (struct sockaddr *)&sock_address, SUN_LEN(&sock_address))) < 0)
lcr_sock = -1;
}
+
+/* sending queue to asterisk */
+static int queue_send(void)
+{
+ int work = 0;
+ struct chan_call *call;
+ struct ast_channel *ast;
+ struct ast_frame fr;
+ char *p;
+
+ call = call_first;
+ while(call) {
+ p = call->queue_string;
+ ast = call->ast;
+ if (*p && ast) {
+ /* there is something to queue */
+ if (!ast_channel_trylock(ast)) { /* succeed */
+ while(*p) {
+ switch (*p) {
+ case 'P':
+ CDEBUG(call, ast, "Sending queued PROCEEDING to Asterisk.\n");
+ ast_queue_control(ast, AST_CONTROL_PROCEEDING);
+ break;
+ case 'R':
+ CDEBUG(call, ast, "Sending queued RINGING to Asterisk.\n");
+ ast_queue_control(ast, AST_CONTROL_RINGING);
+ ast_setstate(ast, AST_STATE_RINGING);
+ break;
+ case 'A':
+ CDEBUG(call, ast, "Sending queued ANSWER to Asterisk.\n");
+ ast_queue_control(ast, AST_CONTROL_ANSWER);
+ break;
+ case 'H':
+ CDEBUG(call, ast, "Sending queued HANGUP to Asterisk.\n");
+ ast_queue_hangup(ast);
+ break;
+ case '1': case '2': case '3': case 'a':
+ case '4': case '5': case '6': case 'b':
+ case '7': case '8': case '9': case 'c':
+ case '*': case '0': case '#': case 'd':
+ CDEBUG(call, ast, "Sending queued digit '%c' to Asterisk.\n", *p);
+ /* send digit to asterisk */
+ memset(&fr, 0, sizeof(fr));
+ fr.frametype = AST_FRAME_DTMF_BEGIN;
+ fr.subclass = *p;
+ fr.delivery = ast_tv(0, 0);
+ ast_queue_frame(ast, &fr);
+ fr.frametype = AST_FRAME_DTMF_END;
+ ast_queue_frame(ast, &fr);
+ break;
+ default:
+ CDEBUG(call, ast, "Ignoring queued digit 0x%02d.\n", *p);
+ }
+ p++;
+ }
+ call->queue_string[0] = '\0';
+ ast_channel_unlock(ast);
+ work = 1;
+ }
+ }
+ call = call->next;
+ }
+
+ return work;
+}
+
+/* signal handler */
void sighandler(int sigset)
{
}
+/* chan_lcr thread */
static void *chan_thread(void *arg)
{
int work;
ret = bchannel_handle();
if (ret)
work = 1;
-
+
+ /* handle messages to asterisk */
+ ret = queue_send();
+ if (ret)
+ work = 1;
+
+ /* delay if no work done */
if (!work) {
ast_mutex_unlock(&chan_lock);
usleep(30000);
if (lcr_sock < 0)
{
CERROR(NULL, NULL, "Rejecting call from Asterisk, because LCR not running.\n");
+ ast_mutex_unlock(&chan_lock);
return NULL;
}
if (!call)
{
/* failed to create instance */
+ ast_mutex_unlock(&chan_lock);
return NULL;
}
CERROR(NULL, NULL, "Failed to create Asterisk channel.\n");
free_call(call);
/* failed to create instance */
+ ast_mutex_unlock(&chan_lock);
return NULL;
}
ast->tech = &lcr_tech;
return 0;
}
-static int lcr_digit_begin(struct ast_channel *ast, char digit)
+static void send_digit_to_chan(struct ast_channel * ast, char digit )
{
- printf("DIGT BEGIN %c\n", digit);
- return (0);
+ static const char* dtmf_tones[] = {
+ "!941+1336/100,!0/100", /* 0 */
+ "!697+1209/100,!0/100", /* 1 */
+ "!697+1336/100,!0/100", /* 2 */
+ "!697+1477/100,!0/100", /* 3 */
+ "!770+1209/100,!0/100", /* 4 */
+ "!770+1336/100,!0/100", /* 5 */
+ "!770+1477/100,!0/100", /* 6 */
+ "!852+1209/100,!0/100", /* 7 */
+ "!852+1336/100,!0/100", /* 8 */
+ "!852+1477/100,!0/100", /* 9 */
+ "!697+1633/100,!0/100", /* A */
+ "!770+1633/100,!0/100", /* B */
+ "!852+1633/100,!0/100", /* C */
+ "!941+1633/100,!0/100", /* D */
+ "!941+1209/100,!0/100", /* * */
+ "!941+1477/100,!0/100" }; /* # */
+
+ if (digit >= '0' && digit <='9')
+ ast_playtones_start(ast,0,dtmf_tones[digit-'0'], 0);
+ else if (digit >= 'A' && digit <= 'D')
+ ast_playtones_start(ast,0,dtmf_tones[digit-'A'+10], 0);
+ else if (digit == '*')
+ ast_playtones_start(ast,0,dtmf_tones[14], 0);
+ else if (digit == '#')
+ ast_playtones_start(ast,0,dtmf_tones[15], 0);
+ else {
+ /* not handled */
+ ast_log(LOG_DEBUG, "Unable to handle DTMF tone "
+ "'%c' for '%s'\n", digit, ast->name);
+ }
}
-static int lcr_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
+
+static int lcr_digit_begin(struct ast_channel *ast, char digit)
{
struct chan_call *call;
union parameter newparam;
return(0);
}
+static int lcr_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
+{
+ int inband_dtmf = 0;
+ struct chan_call *call;
+
+ ast_mutex_lock(&chan_lock);
+
+ call = ast->tech_pvt;
+
+ if (!call) {
+ CERROR(NULL, ast,
+ "Received digit from Asterisk, "
+ "but no call instance exists.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
+
+ CDEBUG(call, ast, "DIGIT END '%c' from Asterisk.\n", digit);
+
+ if (call->state == CHAN_LCR_STATE_CONNECT && call->inband_dtmf) {
+ inband_dtmf = 1;
+ }
+
+ ast_mutex_unlock(&chan_lock);
+
+ if (inband_dtmf) {
+ CDEBUG(call, ast, "-> sending '%c' inband.\n", digit);
+ send_digit_to_chan(ast, digit);
+ }
+
+ return (0);
+}
+
static int lcr_answer(struct ast_channel *ast)
{
union parameter newparam;
return -1;
}
- CDEBUG(call, ast, "Received answer from Asterisk.\n");
+ CDEBUG(call, ast, "Received answer from Asterisk (maybe during lcr_bridge).\n");
/* copy connectinfo, if bridged */
if (call->bridge_call)
memcpy(&call->connectinfo, &call->bridge_call->connectinfo, sizeof(struct connect_info));
/* send connect message to lcr */
- memset(&newparam, 0, sizeof(union parameter));
- memcpy(&newparam.connectinfo, &call->connectinfo, sizeof(struct connect_info));
- send_message(MESSAGE_CONNECT, call->ref, &newparam);
+ if (call->state != CHAN_LCR_STATE_CONNECT) {
+ memset(&newparam, 0, sizeof(union parameter));
+ memcpy(&newparam.connectinfo, &call->connectinfo, sizeof(struct connect_info));
+ send_message(MESSAGE_CONNECT, call->ref, &newparam);
+ call->state = CHAN_LCR_STATE_CONNECT;
+ }
/* change state */
- call->state = CHAN_LCR_STATE_CONNECT;
/* request bchannel */
if (!call->bchannel) {
CDEBUG(call, ast, "Requesting B-channel.\n");
if (ast->hangupcause > 0)
send_release_and_import(call, ast->hangupcause, LOCATION_PRIVATE_LOCAL);
else
- send_release_and_import(call, CAUSE_RESSOURCEUNAVAIL, LOCATION_PRIVATE_LOCAL);
+ send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
/* remove call */
free_call(call);
if (!pthread_equal(tid, chan_tid))
/* during prepare, we change to release state */
CDEBUG(call, ast, "We must wait until we received our ref, until we can free call instance.\n");
call->state = CHAN_LCR_STATE_RELEASE;
+ call->ast = NULL;
}
}
if (!pthread_equal(tid, chan_tid))
static struct ast_frame *lcr_read(struct ast_channel *ast)
{
struct chan_call *call;
- int i, len;
- unsigned char *p;
+ int len;
ast_mutex_lock(&chan_lock);
call = ast->tech_pvt;
return NULL;
}
if (call->pipe[0] > -1) {
- len = read(call->pipe[0], call->read_buff, sizeof(call->read_buff));
+ if (call->rebuffer && !call->hdlc) {
+ len = read(call->pipe[0], call->read_buff, 160);
+ } else {
+ len = read(call->pipe[0], call->read_buff, sizeof(call->read_buff));
+ }
+ if (len < 0 && errno == EAGAIN) {
+ ast_mutex_unlock(&chan_lock);
+ return &ast_null_frame;
+ }
if (len <= 0) {
close(call->pipe[0]);
call->pipe[0] = -1;
+ ast_mutex_unlock(&chan_lock);
return NULL;
}
}
- p = call->read_buff;
- for (i = 0; i < len; i++) {
- *p = flip_bits[*p];
- p++;
- }
-
call->read_fr.frametype = AST_FRAME_VOICE;
call->read_fr.subclass = ast->nativeformats;
call->read_fr.datalen = len;
/*start music onhold*/
ast_moh_start(ast,data,ast->musicclass);
+ call->on_hold = 1;
break;
case AST_CONTROL_UNHOLD:
CDEBUG(call, ast, "Received indicate AST_CONTROL_UNHOLD from Asterisk.\n");
/*stop moh*/
ast_moh_stop(ast);
+ call->on_hold = 0;
break;
-
+#ifdef AST_CONTROL_SRCUPDATE
+ case AST_CONTROL_SRCUPDATE:
+ CDEBUG(call, ast, "Received AST_CONTROL_SRCUPDATE from Asterisk.\n");
+ break;
+#endif
default:
CERROR(call, ast, "Received indicate from Asterisk with unknown condition %d.\n", cond);
res = -1;
/*
* fixup asterisk
*/
-static int lcr_fixup(struct ast_channel *oldast, struct ast_channel *newast)
+static int lcr_fixup(struct ast_channel *oldast, struct ast_channel *ast)
{
struct chan_call *call;
+ if (!ast) {
+ return -1;
+ }
+
ast_mutex_lock(&chan_lock);
- call = oldast->tech_pvt;
+ call = ast->tech_pvt;
if (!call) {
- CERROR(NULL, oldast, "Received fixup from Asterisk, but no call instance exists.\n");
+ CERROR(NULL, ast, "Received fixup from Asterisk, but no call instance exists.\n");
ast_mutex_unlock(&chan_lock);
return -1;
}
- CDEBUG(call, oldast, "Received fixup from Asterisk.\n");
- call->ast = newast;
- ast_mutex_lock(&chan_lock);
+ CDEBUG(call, ast, "Received fixup from Asterisk.\n");
+ call->ast = ast;
+ ast_mutex_unlock(&chan_lock);
return 0;
}
struct ast_frame *f;
int bridge_id;
- CDEBUG(NULL, NULL, "Received briding request from Asterisk.\n");
+ CDEBUG(NULL, NULL, "Received bridging request from Asterisk.\n");
carr[0] = ast1;
carr[1] = ast2;
-
+
/* join via dsp (if the channels are currently open) */
ast_mutex_lock(&chan_lock);
- bridge_id = new_bridge_id();
call1 = ast1->tech_pvt;
call2 = ast2->tech_pvt;
- if (call1 && call2)
- {
+ if (!call1 || !call2) {
+ CDEBUG(NULL, NULL, "Bridge, but we don't have two call instances, exitting.\n");
+ ast_mutex_unlock(&chan_lock);
+ return AST_BRIDGE_COMPLETE;
+ }
+
+ /* join, if both call instances uses dsp */
+ if (!call1->nodsp && !call2->nodsp) {
+ CDEBUG(NULL, NULL, "Both calls use DSP, bridging via DSP.\n");
+
+ /* get bridge id and join */
+ bridge_id = new_bridge_id();
+
call1->bridge_id = bridge_id;
if (call1->bchannel)
bchannel_join(call1->bchannel, bridge_id);
- call1->bridge_call = call2;
- }
- if (call2)
- {
+
call2->bridge_id = bridge_id;
if (call2->bchannel)
bchannel_join(call2->bchannel, bridge_id);
- call2->bridge_call = call1;
+ } else
+ if (call1->nodsp && call2->nodsp)
+ CDEBUG(NULL, NULL, "Both calls use no DSP, bridging in channel driver.\n");
+ else
+ CDEBUG(NULL, NULL, "One call uses no DSP, bridging in channel driver.\n");
+ call1->bridge_call = call2;
+ call2->bridge_call = call1;
+
+ if (call1->state == CHAN_LCR_STATE_IN_SETUP
+ || call1->state == CHAN_LCR_STATE_IN_DIALING
+ || call1->state == CHAN_LCR_STATE_IN_PROCEEDING
+ || call1->state == CHAN_LCR_STATE_IN_ALERTING) {
+ CDEBUG(call1, ast1, "Bridge established before lcr_answer, so we call it ourself: Calling lcr_answer...\n");
+ lcr_answer(ast1);
+ }
+ if (call2->state == CHAN_LCR_STATE_IN_SETUP
+ || call2->state == CHAN_LCR_STATE_IN_DIALING
+ || call2->state == CHAN_LCR_STATE_IN_PROCEEDING
+ || call2->state == CHAN_LCR_STATE_IN_ALERTING) {
+ CDEBUG(call2, ast2, "Bridge established before lcr_answer, so we call it ourself: Calling lcr_answer...\n");
+ lcr_answer(ast2);
+ }
+
+ /* sometimes SIP phones forget to send RETRIEVE before TRANSFER
+ so let's do it for them. Hmpf.
+ */
+
+ if (call1->on_hold) {
+ union parameter newparam;
+
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
+ send_message(MESSAGE_NOTIFY, call1->ref, &newparam);
+
+ call1->on_hold = 0;
}
+
+ if (call2->on_hold) {
+ union parameter newparam;
+
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
+ send_message(MESSAGE_NOTIFY, call2->ref, &newparam);
+
+ call2->on_hold = 0;
+ }
+
ast_mutex_unlock(&chan_lock);
while(1) {
}
- CDEBUG(NULL, NULL, "Releasing bride.\n");
+ CDEBUG(NULL, NULL, "Releasing bridge.\n");
/* split channels */
ast_mutex_lock(&chan_lock);
call1 = ast1->tech_pvt;
call2 = ast2->tech_pvt;
- if (call1)
+ if (call1 && call1->bridge_id)
{
call1->bridge_id = 0;
if (call1->bchannel)
bchannel_join(call1->bchannel, 0);
if (call1->bridge_call)
call1->bridge_call->bridge_call = NULL;
- call1->bridge_call = NULL;
}
- if (call2)
+ if (call2 && call1->bridge_id)
{
call2->bridge_id = 0;
if (call2->bchannel)
bchannel_join(call2->bchannel, 0);
if (call2->bridge_call)
call2->bridge_call->bridge_call = NULL;
- call2->bridge_call = NULL;
}
+ call1->bridge_call = NULL;
+ call2->bridge_call = NULL;
ast_mutex_unlock(&chan_lock);
return AST_BRIDGE_COMPLETE;
" d - Send display text on called phone, text is the optarg.\n"
" n - Don't detect dtmf tones on called channel.\n"
" h - Force data call (HDLC).\n"
- " t - Disable all audio features (required for fax application).\n"
+ " t - Disable mISDN_dsp features (required for fax application).\n"
" c - Make crypted outgoing call, optarg is keyindex.\n"
" e - Perform echo cancelation on this channel.\n"
" Takes mISDN pipeline option as optarg.\n"
-// " s - Send Non Inband DTMF as inband.\n"
+ " s - Send Non Inband DTMF as inband.\n"
" vr - rxgain control\n"
" vt - txgain control\n"
" Volume changes at factor 2 ^ optarg.\n"
projects / lcr.git / blobdiff