asterisk/apps/app_echo.c

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/*
* Asterisk -- A telephony toolkit for Linux.
*
* Echo application -- play back what you hear to evaluate latency
*
* Copyright (C) 1999, Mark Spencer
*
* Mark Spencer <markster@linux-support.net>
*
* This program is free software, distributed under the terms of
* the GNU General Public License
*/
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/module.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <pthread.h>
static char *tdesc = "Simple Echo Application";
static char *app = "Echo";
STANDARD_LOCAL_USER;
LOCAL_USER_DECL;
static int skel_exec(struct ast_channel *chan, void *data)
{
int res=-1;
struct localuser *u;
struct ast_frame *f;
LOCAL_USER_ADD(u);
/* Do our thing here */
while((f = ast_read(chan))) {
if (f->frametype == AST_FRAME_VOICE) {
if (ast_write(chan, f))
break;
} else if (f->frametype == AST_FRAME_DTMF) {
if (f->subclass == '#') {
res = 0;
break;
} else
if (ast_write(chan, f))
break;
}
}
LOCAL_USER_REMOVE(u);
return res;
}
int unload_module(void)
{
STANDARD_HANGUP_LOCALUSERS;
return ast_unregister_application(app);
}
int load_module(void)
{
return ast_register_application(app, skel_exec);
}
char *description(void)
{
return tdesc;
}
int usecount(void)
{
int res;
STANDARD_USECOUNT(res);
return res;
}