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asterisk/addons/ooh323cDriver.c

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v18.15.1
2023-05-25 18:45:57 +00:00
/*
* Copyright (C) 2004-2005 by Objective Systems, Inc.
*
* This software is furnished under an open source license and may be
* used and copied only in accordance with the terms of this license.
* The text of the license may generally be found in the root
* directory of this installation in the COPYING file. It
* can also be viewed online at the following URL:
*
* http://www.obj-sys.com/open/license.html
*
* Any redistributions of this file including modified versions must
* maintain this copyright notice.
*
*****************************************************************************/
#include "ooh323cDriver.h"
#include "asterisk.h"
#include "asterisk/lock.h"
#include "asterisk/pbx.h"
#include "asterisk/logger.h"
#undef AST_BACKGROUND_STACKSIZE
#define AST_BACKGROUND_STACKSIZE 768 * 1024
#define SEC_TO_HOLD_THREAD 24
extern struct ast_module *myself;
extern OOBOOL gH323Debug;
extern OOH323EndPoint gH323ep;
/* ooh323c stack thread. */
static pthread_t ooh323c_thread = AST_PTHREADT_NULL;
static pthread_t ooh323cmd_thread = AST_PTHREADT_NULL;
static int grxframes = 240;
static int gtxframes = 20;
static struct callthread {
ast_mutex_t lock;
int thePipe[2];
OOBOOL inUse;
ooCallData* call;
struct callthread *next, *prev;
} *callThreads = NULL;
AST_MUTEX_DEFINE_STATIC(callThreadsLock);
int ooh323c_start_receive_channel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_start_transmit_channel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_stop_receive_channel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_stop_transmit_channel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_start_receive_datachannel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_start_transmit_datachannel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_stop_receive_datachannel(ooCallData *call, ooLogicalChannel *pChannel);
int ooh323c_stop_transmit_datachannel(ooCallData *call, ooLogicalChannel *pChannel);
void* ooh323c_stack_thread(void* dummy);
void* ooh323c_cmd_thread(void* dummy);
void* ooh323c_call_thread(void* dummy);
int ooh323c_set_aliases(ooAliases * aliases);
void* ooh323c_stack_thread(void* dummy)
{
ooMonitorChannels();
return dummy;
}
void* ooh323c_cmd_thread(void* dummy)
{
ooMonitorCmdChannels();
return dummy;
}
void* ooh323c_call_thread(void* dummy)
{
struct callthread* mycthread = (struct callthread *)dummy;
struct pollfd pfds[1];
char c;
int res = 0;
do {
ooMonitorCallChannels((ooCallData*)mycthread->call);
mycthread->call = NULL;
mycthread->prev = NULL;
mycthread->inUse = FALSE;
ast_mutex_lock(&callThreadsLock);
mycthread->next = callThreads;
callThreads = mycthread;
if (mycthread->next) mycthread->next->prev = mycthread;
ast_mutex_unlock(&callThreadsLock);
pfds[0].fd = mycthread->thePipe[0];
pfds[0].events = POLLIN;
ooSocketPoll(pfds, 1, SEC_TO_HOLD_THREAD * 1000);
if (ooPDRead(pfds, 1, mycthread->thePipe[0]))
res = read(mycthread->thePipe[0], &c, 1);
ast_mutex_lock(&callThreadsLock);
ast_mutex_lock(&mycthread->lock);
if (mycthread->prev)
mycthread->prev->next = mycthread->next;
else
callThreads = mycthread->next;
if (mycthread->next)
mycthread->next->prev = mycthread->prev;
ast_mutex_unlock(&mycthread->lock);
ast_mutex_unlock(&callThreadsLock);
} while (mycthread->call != NULL && res >= 0);
ast_mutex_destroy(&mycthread->lock);
close(mycthread->thePipe[0]);
close(mycthread->thePipe[1]);
ast_free(mycthread);
ast_module_unref(myself);
ast_update_use_count();
return NULL;
}
int ooh323c_start_call_thread(ooCallData *call) {
char c = 'c';
struct callthread *cur = callThreads;
ast_mutex_lock(&callThreadsLock);
while (cur != NULL && (cur->inUse || ast_mutex_trylock(&cur->lock))) {
cur = cur->next;
}
ast_mutex_unlock(&callThreadsLock);
if (cur != NULL) {
if (cur->inUse || write(cur->thePipe[1], &c, 1) < 0) {
ast_mutex_unlock(&cur->lock);
cur = NULL;
}
}
/* make new thread */
if (cur == NULL) {
if (!(cur = ast_calloc(1, sizeof(struct callthread)))) {
ast_log(LOG_ERROR, "Unable to allocate thread structure for call %s\n",
call->callToken);
return -1;
}
ast_module_ref(myself);
if ((socketpair(PF_LOCAL, SOCK_STREAM, 0, cur->thePipe)) == -1) {
ast_log(LOG_ERROR, "Can't create thread pipe for call %s\n", call->callToken);
ast_free(cur);
return -1;
}
cur->inUse = TRUE;
cur->call = call;
ast_mutex_init(&cur->lock);
if (gH323Debug)
ast_debug(1,"new call thread created for call %s\n", call->callToken);
if(ast_pthread_create_detached_background(&call->callThread, NULL, ooh323c_call_thread, cur) < 0)
{
ast_log(LOG_ERROR, "Unable to start ooh323c call thread for call %s\n",
call->callToken);
ast_mutex_destroy(&cur->lock);
close(cur->thePipe[0]);
close(cur->thePipe[1]);
ast_free(cur);
return -1;
}
} else {
if (gH323Debug)
ast_debug(1,"using existing call thread for call %s\n", call->callToken);
cur->inUse = TRUE;
cur->call = call;
ast_mutex_unlock(&cur->lock);
}
return 0;
}
int ooh323c_stop_call_thread(ooCallData *call) {
if (call->callThread != AST_PTHREADT_NULL) {
ooStopMonitorCallChannels(call);
}
return 0;
}
int ooh323c_start_stack_thread()
{
if(ast_pthread_create_background(&ooh323c_thread, NULL, ooh323c_stack_thread, NULL) < 0)
{
ast_log(LOG_ERROR, "Unable to start ooh323c thread.\n");
return -1;
}
if(ast_pthread_create_background(&ooh323cmd_thread, NULL, ooh323c_cmd_thread, NULL) < 0)
{
ast_log(LOG_ERROR, "Unable to start ooh323cmd thread.\n");
return -1;
}
return 0;
}
int ooh323c_stop_stack_thread(void)
{
if(ooh323c_thread != AST_PTHREADT_NULL)
{
ooStopMonitor();
pthread_join(ooh323c_thread, NULL);
ooh323c_thread = AST_PTHREADT_NULL;
pthread_join(ooh323cmd_thread, NULL);
ooh323cmd_thread = AST_PTHREADT_NULL;
}
return 0;
}
int ooh323c_set_capability
(struct ast_format_cap *cap, int dtmf, int dtmfcodec)
{
int ret = 0, x;
if (gH323Debug) {
ast_verb(0, "\tAdding capabilities to H323 endpoint\n");
}
for(x=0; x<ast_format_cap_count(cap); x++)
{
struct ast_format *format = ast_format_cap_get_format(cap, x);
if(ast_format_cmp(format, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g711 ulaw capability to H323 endpoint\n");
}
ret= ooH323EpAddG711Capability(OO_G711ULAW64K, gtxframes, grxframes,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g711 alaw capability to H323 endpoint\n");
}
ret= ooH323EpAddG711Capability(OO_G711ALAW64K, gtxframes, grxframes,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g729) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g729A capability to H323 endpoint\n");
}
ret = ooH323EpAddG729Capability(OO_G729A, 2, 24,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
if (gH323Debug) {
ast_verb(0, "\tAdding g729 capability to H323 endpoint\n");
}
ret |= ooH323EpAddG729Capability(OO_G729, 2, 24,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
if (gH323Debug) {
ast_verb(0, "\tAdding g729b capability to H323 endpoint\n");
}
ret |= ooH323EpAddG729Capability(OO_G729B, 2, 24,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g723) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g7231 capability to H323 endpoint\n");
}
ret = ooH323EpAddG7231Capability(OO_G7231, 1, 1, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g726) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g726 capability to H323 endpoint\n");
}
ret = ooH323EpAddG726Capability(OO_G726, gtxframes, grxframes, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g726_aal2) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g726aal2 capability to H323 endpoint\n");
}
ret = ooH323EpAddG726Capability(OO_G726AAL2, gtxframes, grxframes, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_h263) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding h263 capability to H323 endpoint\n");
}
ret = ooH323EpAddH263VideoCapability(OO_H263VIDEO, 1, 0, 0, 0, 0, 320*1024,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_gsm) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding gsm capability to H323 endpoint\n");
}
ret = ooH323EpAddGSMCapability(OO_GSMFULLRATE, 4, FALSE, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_speex) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding speex capability to H323 endpoint\n");
}
ret = ooH323EpAddSpeexCapability(OO_SPEEX, 4, 4, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
ao2_ref(format, -1);
}
if(dtmf & H323_DTMF_CISCO)
ret |= ooH323EpEnableDTMFCISCO(0);
if(dtmf & H323_DTMF_RFC2833)
ret |= ooH323EpEnableDTMFRFC2833(0);
else if(dtmf & H323_DTMF_H245ALPHANUMERIC)
ret |= ooH323EpEnableDTMFH245Alphanumeric();
else if(dtmf & H323_DTMF_H245SIGNAL)
ret |= ooH323EpEnableDTMFH245Signal();
return ret;
}
int ooh323c_set_capability_for_call
(ooCallData *call, struct ast_format_cap *cap, int dtmf, int dtmfcodec,
int t38support, int g729onlyA)
{
int ret = 0, x, txframes;
if (gH323Debug) {
ast_verb(0, "\tAdding capabilities to call(%s, %s)\n", call->callType,
call->callToken);
}
if(dtmf & H323_DTMF_CISCO || 1)
ret |= ooCallEnableDTMFCISCO(call,dtmfcodec);
if(dtmf & H323_DTMF_RFC2833 || 1)
ret |= ooCallEnableDTMFRFC2833(call,dtmfcodec);
if(dtmf & H323_DTMF_H245ALPHANUMERIC || 1)
ret |= ooCallEnableDTMFH245Alphanumeric(call);
if(dtmf & H323_DTMF_H245SIGNAL || 1)
ret |= ooCallEnableDTMFH245Signal(call);
if (t38support)
ooCapabilityAddT38Capability(call, OO_T38, OORXANDTX,
&ooh323c_start_receive_datachannel,
&ooh323c_start_transmit_datachannel,
&ooh323c_stop_receive_datachannel,
&ooh323c_stop_transmit_datachannel,
0);
for(x=0; x<ast_format_cap_count(cap); x++)
{
struct ast_format *format = ast_format_cap_get_format(cap, x);
if(ast_format_cmp(format, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g711 ulaw capability to call(%s, %s)\n",
call->callType, call->callToken);
}
txframes = ast_format_cap_get_format_framing(cap, format);
ret= ooCallAddG711Capability(call, OO_G711ULAW64K, txframes,
txframes, OORXANDTX,
&ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g711 alaw capability to call(%s, %s)\n",
call->callType, call->callToken);
}
txframes = ast_format_cap_get_format_framing(cap, format);
ret= ooCallAddG711Capability(call, OO_G711ALAW64K, txframes,
txframes, OORXANDTX,
&ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g726) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g726 capability to call (%s, %s)\n",
call->callType, call->callToken);
}
txframes = ast_format_cap_get_format_framing(cap, format);
ret = ooCallAddG726Capability(call, OO_G726, txframes, grxframes, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g726_aal2) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g726aal2 capability to call (%s, %s)\n",
call->callType, call->callToken);
}
txframes = ast_format_cap_get_format_framing(cap, format);
ret = ooCallAddG726Capability(call, OO_G726AAL2, txframes, grxframes, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g729) == AST_FORMAT_CMP_EQUAL)
{
txframes = (ast_format_cap_get_format_framing(cap, format))/10;
if (gH323Debug) {
ast_verb(0, "\tAdding g729A capability to call(%s, %s)\n",
call->callType, call->callToken);
}
ret= ooCallAddG729Capability(call, OO_G729A, txframes, txframes,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
if (g729onlyA)
continue;
if (gH323Debug) {
ast_verb(0, "\tAdding g729 capability to call(%s, %s)\n",
call->callType, call->callToken);
}
ret|= ooCallAddG729Capability(call, OO_G729, txframes, txframes,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
if (gH323Debug) {
ast_verb(0, "\tAdding g729B capability to call(%s, %s)\n",
call->callType, call->callToken);
}
ret|= ooCallAddG729Capability(call, OO_G729B, txframes, txframes,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_g723) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding g7231 capability to call (%s, %s)\n",
call->callType, call->callToken);
}
ret = ooCallAddG7231Capability(call, OO_G7231, 1, 1, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_h263) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding h263 capability to call (%s, %s)\n",
call->callType, call->callToken);
}
ret = ooCallAddH263VideoCapability(call, OO_H263VIDEO, 1, 0, 0, 0, 0, 320*1024,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_gsm) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding gsm capability to call(%s, %s)\n",
call->callType, call->callToken);
}
ret = ooCallAddGSMCapability(call, OO_GSMFULLRATE, 4, FALSE, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
if(ast_format_cmp(format, ast_format_speex) == AST_FORMAT_CMP_EQUAL)
{
if (gH323Debug) {
ast_verb(0, "\tAdding Speex capability to call(%s, %s)\n",
call->callType, call->callToken);
}
ret = ooCallAddSpeexCapability(call, OO_SPEEX, 4, 4, FALSE,
OORXANDTX, &ooh323c_start_receive_channel,
&ooh323c_start_transmit_channel,
&ooh323c_stop_receive_channel,
&ooh323c_stop_transmit_channel);
}
ao2_ref(format, -1);
}
return ret;
}
int ooh323c_set_aliases(ooAliases * aliases)
{
ooAliases *cur = aliases;
while(cur)
{
switch(cur->type)
{
case T_H225AliasAddress_dialedDigits:
ooH323EpAddAliasDialedDigits(cur->value);
break;
case T_H225AliasAddress_h323_ID:
ooH323EpAddAliasH323ID(cur->value);
break;
case T_H225AliasAddress_url_ID:
ooH323EpAddAliasURLID(cur->value);
break;
case T_H225AliasAddress_email_ID:
ooH323EpAddAliasEmailID(cur->value);
break;
default:
ast_debug(1, "Ignoring unknown alias type\n");
}
cur = cur->next;
}
return 1;
}
int ooh323c_start_receive_channel(ooCallData *call, ooLogicalChannel *pChannel)
{
struct ast_format *tmpfmt = NULL;
tmpfmt = convertH323CapToAsteriskCap(pChannel->chanCap->cap);
if(tmpfmt) {
/* ooh323_set_read_format(call, fmt); */
}else{
ast_log(LOG_ERROR, "Invalid capability type for receive channel %s\n",
call->callToken);
return -1;
}
return 1;
}
int ooh323c_start_transmit_channel(ooCallData *call, ooLogicalChannel *pChannel)
{
struct ast_format *tmpfmt = NULL;
tmpfmt = convertH323CapToAsteriskCap(pChannel->chanCap->cap);
if (tmpfmt) {
if ((ast_format_cmp(tmpfmt, ast_format_alaw) == AST_FORMAT_CMP_EQUAL) ||
(ast_format_cmp(tmpfmt, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL)) {
ooh323_set_write_format(call, tmpfmt, ((OOCapParams *)(pChannel->chanCap->params))->txframes);
} else if (ast_format_cmp(tmpfmt, ast_format_g729) == AST_FORMAT_CMP_EQUAL) {
ooh323_set_write_format(call, tmpfmt, ((OOCapParams *)(pChannel->chanCap->params))->txframes*10);
} else {
ooh323_set_write_format(call, tmpfmt, 0);
}
}else{
ast_log(LOG_ERROR, "Invalid capability type for receive channel %s\n",
call->callToken);
return -1;
}
setup_rtp_connection(call, pChannel->remoteIP, pChannel->remoteMediaPort);
return 1;
}
int ooh323c_stop_receive_channel(ooCallData *call, ooLogicalChannel *pChannel)
{
return 1;
}
int ooh323c_stop_transmit_channel(ooCallData *call, ooLogicalChannel *pChannel)
{
close_rtp_connection(call);
return 1;
}
int ooh323c_start_receive_datachannel(ooCallData *call, ooLogicalChannel *pChannel)
{
return 1;
}
int ooh323c_start_transmit_datachannel(ooCallData *call, ooLogicalChannel *pChannel)
{
setup_udptl_connection(call, pChannel->remoteIP, pChannel->remoteMediaPort);
return 1;
}
int ooh323c_stop_receive_datachannel(ooCallData *call, ooLogicalChannel *pChannel)
{
return 1;
}
int ooh323c_stop_transmit_datachannel(ooCallData *call, ooLogicalChannel *pChannel)
{
close_udptl_connection(call);
return 1;
}
struct ast_format *convertH323CapToAsteriskCap(int cap)
{
switch(cap)
{
case OO_G711ULAW64K:
return ast_format_ulaw;
case OO_G711ALAW64K:
return ast_format_alaw;
case OO_GSMFULLRATE:
return ast_format_gsm;
case OO_SPEEX:
return ast_format_speex;
case OO_G729:
return ast_format_g729;
case OO_G729A:
return ast_format_g729;
case OO_G729B:
return ast_format_g729;
case OO_G7231:
return ast_format_g723;
case OO_G726:
return ast_format_g726;
case OO_G726AAL2:
return ast_format_g726_aal2;
case OO_H263VIDEO:
return ast_format_h263;
default:
ast_debug(1, "Cap %d is not supported by driver yet\n", cap);
return NULL;
}
return NULL;
}