git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@8250 d0543943-73ff-0310-b7d9-9358b9ac24b2
This commit is contained in:
Anthony Minessale 2008-05-02 17:51:48 +00:00
parent aa47e3e5fd
commit 02715f7f51
2 changed files with 605 additions and 0 deletions

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MODNAME=mod_conference
include ../../../../build/modmake.rules

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/*
* FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
* Copyright (C) 2005/2006, Anthony Minessale II <anthmct@yahoo.com>
*
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
*
* The Initial Developer of the Original Code is
* Anthony Minessale II <anthmct@yahoo.com>
* Portions created by the Initial Developer are Copyright (C)
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Anthony Minessale II <anthmct@yahoo.com>
*
*
* mod_reference.c -- REFERENCE Endpoint Module
*
*/
#include <switch.h>
SWITCH_MODULE_LOAD_FUNCTION(mod_reference_load);
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_reference_shutdown);
//SWITCH_MODULE_RUNTIME_FUNCTION(mod_reference_runtime);
SWITCH_MODULE_DEFINITION(mod_reference, mod_reference_load, mod_reference_shutdown, NULL);//mod_reference_runtime);
switch_endpoint_interface_t *reference_endpoint_interface;
static switch_memory_pool_t *module_pool = NULL;
static int running = 1;
typedef enum {
TFLAG_IO = (1 << 0),
TFLAG_INBOUND = (1 << 1),
TFLAG_OUTBOUND = (1 << 2),
TFLAG_DTMF = (1 << 3),
TFLAG_VOICE = (1 << 4),
TFLAG_HANGUP = (1 << 5),
TFLAG_LINEAR = (1 << 6),
TFLAG_CODEC = (1 << 7),
TFLAG_BREAK = (1 << 8)
} TFLAGS;
typedef enum {
GFLAG_MY_CODEC_PREFS = (1 << 0)
} GFLAGS;
static struct {
int debug;
char *ip;
int port;
char *dialplan;
char *codec_string;
char *codec_order[SWITCH_MAX_CODECS];
int codec_order_last;
char *codec_rates_string;
char *codec_rates[SWITCH_MAX_CODECS];
int codec_rates_last;
unsigned int flags;
int calls;
switch_mutex_t *mutex;
} globals;
struct private_object {
unsigned int flags;
switch_codec_t read_codec;
switch_codec_t write_codec;
switch_frame_t read_frame;
unsigned char databuf[SWITCH_RECOMMENDED_BUFFER_SIZE];
switch_core_session_t *session;
switch_caller_profile_t *caller_profile;
switch_mutex_t *mutex;
switch_mutex_t *flag_mutex;
//switch_thread_cond_t *cond;
};
typedef struct private_object private_t;
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_dialplan, globals.dialplan);
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_codec_string, globals.codec_string);
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_codec_rates_string, globals.codec_rates_string);
SWITCH_DECLARE_GLOBAL_STRING_FUNC(set_global_ip, globals.ip);
static switch_status_t channel_on_init(switch_core_session_t *session);
static switch_status_t channel_on_hangup(switch_core_session_t *session);
static switch_status_t channel_on_ring(switch_core_session_t *session);
static switch_status_t channel_on_loopback(switch_core_session_t *session);
static switch_status_t channel_on_transmit(switch_core_session_t *session);
static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *session,
switch_caller_profile_t *outbound_profile,
switch_core_session_t **new_session, switch_memory_pool_t **pool, switch_originate_flag_t flags);
static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, int timeout, switch_io_flag_t flags, int stream_id);
static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, int timeout, switch_io_flag_t flags, int stream_id);
static switch_status_t channel_kill_channel(switch_core_session_t *session, int sig);
static void tech_init(private_t * tech_pvt, switch_core_session_t *session)
{
tech_pvt->read_frame.data = tech_pvt->databuf;
tech_pvt->read_frame.buflen = sizeof(tech_pvt->databuf);
switch_mutex_init(&tech_pvt->mutex, SWITCH_MUTEX_NESTED, switch_core_session_get_pool(session));
switch_mutex_init(&tech_pvt->flag_mutex, SWITCH_MUTEX_NESTED, switch_core_session_get_pool(session));
switch_core_session_set_private(session, tech_pvt);
tech_pvt->session = session;
}
/*
State methods they get called when the state changes to the specific state
returning SWITCH_STATUS_SUCCESS tells the core to execute the standard state method next
so if you fully implement the state you can return SWITCH_STATUS_FALSE to skip it.
*/
static switch_status_t channel_on_init(switch_core_session_t *session)
{
switch_channel_t *channel;
private_t *tech_pvt = NULL;
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
switch_set_flag_locked(tech_pvt, TFLAG_IO);
/* Move Channel's State Machine to RING */
switch_channel_set_state(channel, CS_RING);
switch_mutex_lock(globals.mutex);
globals.calls++;
switch_mutex_unlock(globals.mutex);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_on_ring(switch_core_session_t *session)
{
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL RING\n", switch_channel_get_name(channel));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_on_execute(switch_core_session_t *session)
{
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL EXECUTE\n", switch_channel_get_name(channel));
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_on_hangup(switch_core_session_t *session)
{
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch_clear_flag_locked(tech_pvt, TFLAG_IO);
switch_clear_flag_locked(tech_pvt, TFLAG_VOICE);
//switch_thread_cond_signal(tech_pvt->cond);
if (tech_pvt->read_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->read_codec);
}
if (tech_pvt->write_codec.implementation) {
switch_core_codec_destroy(&tech_pvt->write_codec);
}
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "%s CHANNEL HANGUP\n", switch_channel_get_name(channel));
switch_mutex_lock(globals.mutex);
globals.calls--;
if (globals.calls < 0) {
globals.calls = 0;
}
switch_mutex_unlock(globals.mutex);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_kill_channel(switch_core_session_t *session, int sig)
{
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch (sig) {
case SWITCH_SIG_KILL:
switch_clear_flag_locked(tech_pvt, TFLAG_IO);
switch_clear_flag_locked(tech_pvt, TFLAG_VOICE);
switch_channel_hangup(channel, SWITCH_CAUSE_NORMAL_CLEARING);
//switch_thread_cond_signal(tech_pvt->cond);
break;
case SWITCH_SIG_BREAK:
switch_set_flag_locked(tech_pvt, TFLAG_BREAK);
break;
default:
break;
}
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_on_loopback(switch_core_session_t *session)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CHANNEL LOOPBACK\n");
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_on_transmit(switch_core_session_t *session)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG, "CHANNEL TRANSMIT\n");
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_waitfor_read(switch_core_session_t *session, int ms, int stream_id)
{
private_t *tech_pvt = NULL;
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_waitfor_write(switch_core_session_t *session, int ms, int stream_id)
{
private_t *tech_pvt = NULL;
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_send_dtmf(switch_core_session_t *session, const switch_dtmf_t *dtmf)
{
private_t *tech_pvt = switch_core_session_get_private(session);
switch_assert(tech_pvt != NULL);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_read_frame(switch_core_session_t *session, switch_frame_t **frame, int timeout, switch_io_flag_t flags, int stream_id)
{
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
switch_time_t started = switch_time_now();
unsigned int elapsed;
switch_byte_t *data;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
tech_pvt->read_frame.flags = SFF_NONE;
*frame = NULL;
while (switch_test_flag(tech_pvt, TFLAG_IO)) {
if (switch_test_flag(tech_pvt, TFLAG_BREAK)) {
switch_clear_flag(tech_pvt, TFLAG_BREAK);
goto cng;
}
if (!switch_test_flag(tech_pvt, TFLAG_IO)) {
return SWITCH_STATUS_FALSE;
}
if (switch_test_flag(tech_pvt, TFLAG_IO) && switch_test_flag(tech_pvt, TFLAG_VOICE)) {
switch_clear_flag_locked(tech_pvt, TFLAG_VOICE);
if (!tech_pvt->read_frame.datalen) {
continue;
}
*frame = &tech_pvt->read_frame;
return SWITCH_STATUS_SUCCESS;
}
if (timeout > -1) {
elapsed = (unsigned int) ((switch_time_now() - started) / 1000);
if (elapsed >= (unsigned int) timeout) {
return SWITCH_STATUS_SUCCESS;
}
}
switch_yield(1000);
}
return SWITCH_STATUS_FALSE;
cng:
data = (switch_byte_t *) tech_pvt->read_frame.data;
data[0] = 65;
data[1] = 0;
tech_pvt->read_frame.datalen = 2;
tech_pvt->read_frame.flags = SFF_CNG;
*frame = &tech_pvt->read_frame;
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_write_frame(switch_core_session_t *session, switch_frame_t *frame, int timeout, switch_io_flag_t flags, int stream_id)
{
switch_channel_t *channel = NULL;
private_t *tech_pvt = NULL;
//switch_frame_t *pframe;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
if (!switch_test_flag(tech_pvt, TFLAG_IO)) {
return SWITCH_STATUS_FALSE;
}
#ifdef BIGENDIAN
if (switch_test_flag(tech_pvt, TFLAG_LINEAR)) {
switch_swap_linear(frame->data, (int) frame->datalen / 2);
}
#endif
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_answer_channel(switch_core_session_t *session)
{
private_t *tech_pvt;
switch_channel_t *channel = NULL;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = switch_core_session_get_private(session);
assert(tech_pvt != NULL);
return SWITCH_STATUS_SUCCESS;
}
static switch_status_t channel_receive_message(switch_core_session_t *session, switch_core_session_message_t *msg)
{
switch_channel_t *channel;
private_t *tech_pvt;
channel = switch_core_session_get_channel(session);
assert(channel != NULL);
tech_pvt = (private_t *) switch_core_session_get_private(session);
assert(tech_pvt != NULL);
switch (msg->message_id) {
case SWITCH_MESSAGE_INDICATE_ANSWER:
{
channel_answer_channel(session);
}
break;
default:
break;
}
return SWITCH_STATUS_SUCCESS;
}
/* Make sure when you have 2 sessions in the same scope that you pass the appropriate one to the routines
that allocate memory or you will have 1 channel with memory allocated from another channel's pool!
*/
static switch_call_cause_t channel_outgoing_channel(switch_core_session_t *session,
switch_caller_profile_t *outbound_profile,
switch_core_session_t **new_session, switch_memory_pool_t **pool, switch_originate_flag_t flags)
{
if ((*new_session = switch_core_session_request(reference_endpoint_interface, pool)) != 0) {
private_t *tech_pvt;
switch_channel_t *channel;
switch_caller_profile_t *caller_profile;
switch_core_session_add_stream(*new_session, NULL);
if ((tech_pvt = (private_t *) switch_core_session_alloc(*new_session, sizeof(private_t))) != 0) {
channel = switch_core_session_get_channel(*new_session);
tech_init(tech_pvt, *new_session);
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Hey where is my memory pool?\n");
switch_core_session_destroy(new_session);
return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
}
if (outbound_profile) {
char name[128];
snprintf(name, sizeof(name), "REFERENCE/%s", outbound_profile->destination_number);
switch_channel_set_name(channel, name);
caller_profile = switch_caller_profile_clone(*new_session, outbound_profile);
switch_channel_set_caller_profile(channel, caller_profile);
tech_pvt->caller_profile = caller_profile;
} else {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "Doh! no caller profile\n");
switch_core_session_destroy(new_session);
return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
}
switch_channel_set_flag(channel, CF_OUTBOUND);
switch_set_flag_locked(tech_pvt, TFLAG_OUTBOUND);
switch_channel_set_state(channel, CS_INIT);
return SWITCH_CAUSE_SUCCESS;
}
return SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER;
}
static switch_status_t channel_receive_event(switch_core_session_t *session, switch_event_t *event)
{
struct private_object *tech_pvt = switch_core_session_get_private(session);
char *body = switch_event_get_body(event);
switch_assert(tech_pvt != NULL);
if (!body) {
body = "";
}
return SWITCH_STATUS_SUCCESS;
}
switch_state_handler_table_t reference_state_handlers = {
/*.on_init */ channel_on_init,
/*.on_ring */ channel_on_ring,
/*.on_execute */ channel_on_execute,
/*.on_hangup */ channel_on_hangup,
/*.on_loopback */ channel_on_loopback,
/*.on_transmit */ channel_on_transmit
};
switch_io_routines_t reference_io_routines = {
/*.outgoing_channel */ channel_outgoing_channel,
/*.read_frame */ channel_read_frame,
/*.write_frame */ channel_write_frame,
/*.kill_channel */ channel_kill_channel,
/*.waitfor_read */ channel_waitfor_read,
/*.waitfor_write */ channel_waitfor_write,
/*.send_dtmf */ channel_send_dtmf,
/*.receive_message*/ channel_receive_message,
/*.receive_event */ channel_receive_event
};
static switch_status_t load_config(void)
{
char *cf = "reference.conf";
switch_xml_t cfg, xml, settings, param;
memset(&globals, 0, sizeof(globals));
switch_mutex_init(&globals.mutex, SWITCH_MUTEX_NESTED, module_pool);
if (!(xml = switch_xml_open_cfg(cf, &cfg, NULL))) {
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "open of %s failed\n", cf);
return SWITCH_STATUS_TERM;
}
if ((settings = switch_xml_child(cfg, "settings"))) {
for (param = switch_xml_child(settings, "param"); param; param = param->next) {
char *var = (char *) switch_xml_attr_soft(param, "name");
char *val = (char *) switch_xml_attr_soft(param, "value");
if (!strcmp(var, "debug")) {
globals.debug = atoi(val);
} else if (!strcmp(var, "port")) {
globals.port = atoi(val);
} else if (!strcmp(var, "ip")) {
set_global_ip(val);
} else if (!strcmp(var, "codec-master")) {
if (!strcasecmp(val, "us")) {
switch_set_flag(&globals, GFLAG_MY_CODEC_PREFS);
}
} else if (!strcmp(var, "dialplan")) {
set_global_dialplan(val);
} else if (!strcmp(var, "codec-prefs")) {
set_global_codec_string(val);
globals.codec_order_last = switch_separate_string(globals.codec_string, ',', globals.codec_order, SWITCH_MAX_CODECS);
} else if (!strcmp(var, "codec-rates")) {
set_global_codec_rates_string(val);
globals.codec_rates_last = switch_separate_string(globals.codec_rates_string, ',', globals.codec_rates, SWITCH_MAX_CODECS);
}
}
}
if (!globals.dialplan) {
set_global_dialplan("default");
}
if (!globals.port) {
globals.port = 4569;
}
switch_xml_free(xml);
return SWITCH_STATUS_SUCCESS;
}
SWITCH_MODULE_LOAD_FUNCTION(mod_reference_load)
{
module_pool = pool;
load_config();
*module_interface = switch_loadable_module_create_module_interface(pool, modname);
reference_endpoint_interface = switch_loadable_module_create_interface(*module_interface, SWITCH_ENDPOINT_INTERFACE);
reference_endpoint_interface->interface_name = "reference";
reference_endpoint_interface->io_routines = &reference_io_routines;
reference_endpoint_interface->state_handler = &reference_state_handlers;
/* indicate that the module should continue to be loaded */
return SWITCH_STATUS_SUCCESS;
}
/*
SWITCH_MODULE_RUNTIME_FUNCTION(mod_reference_runtime)
{
return SWITCH_STATUS_TERM;
}
*/
SWITCH_MODULE_SHUTDOWN_FUNCTION(mod_reference_shutdown)
{
int x = 0;
running = -1;
while (running) {
if (x++ > 100) {
break;
}
switch_yield(20000);
}
return SWITCH_STATUS_SUCCESS;
}
/* For Emacs:
* Local Variables:
* mode:c
* indent-tabs-mode:t
* tab-width:4
* c-basic-offset:4
* End:
* For VIM:
* vim:set softtabstop=4 shiftwidth=4 tabstop=4 expandtab:
*/