97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
/*
|
|
* Asterisk -- An open source telephony toolkit.
|
|
*
|
|
* Copyright (C) 1999 - 2005, Digium, Inc.
|
|
*
|
|
* Mark Spencer <markster@digium.com>
|
|
*
|
|
* See http://www.asterisk.org for more information about
|
|
* the Asterisk project. Please do not directly contact
|
|
* any of the maintainers of this project for assistance;
|
|
* the project provides a web site, mailing lists and IRC
|
|
* channels for your use.
|
|
*
|
|
* This program is free software, distributed under the terms of
|
|
* the GNU General Public License Version 2. See the LICENSE file
|
|
* at the top of the source tree.
|
|
*/
|
|
|
|
/*! \file
|
|
*
|
|
* \brief Echo application -- play back what you hear to evaluate latency
|
|
*
|
|
* \author Mark Spencer <markster@digium.com>
|
|
*
|
|
* \ingroup applications
|
|
*/
|
|
|
|
/*** MODULEINFO
|
|
<support_level>core</support_level>
|
|
***/
|
|
|
|
#include "asterisk.h"
|
|
|
|
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
|
|
|
|
#include "asterisk/file.h"
|
|
#include "asterisk/module.h"
|
|
#include "asterisk/channel.h"
|
|
|
|
/*** DOCUMENTATION
|
|
<application name="Echo" language="en_US">
|
|
<synopsis>
|
|
Echo audio, video, DTMF back to the calling party
|
|
</synopsis>
|
|
<syntax />
|
|
<description>
|
|
<para>Echos back any audio, video or DTMF frames read from the calling
|
|
channel back to itself. Note: If '#' detected application exits</para>
|
|
</description>
|
|
</application>
|
|
***/
|
|
|
|
static const char app[] = "Echo";
|
|
|
|
static int echo_exec(struct ast_channel *chan, const char *data)
|
|
{
|
|
int res = -1;
|
|
struct ast_format format;
|
|
|
|
ast_best_codec(chan->nativeformats, &format);
|
|
ast_set_write_format(chan, &format);
|
|
ast_set_read_format(chan, &format);
|
|
|
|
while (ast_waitfor(chan, -1) > -1) {
|
|
struct ast_frame *f = ast_read(chan);
|
|
if (!f) {
|
|
break;
|
|
}
|
|
f->delivery.tv_sec = 0;
|
|
f->delivery.tv_usec = 0;
|
|
if (ast_write(chan, f)) {
|
|
ast_frfree(f);
|
|
goto end;
|
|
}
|
|
if ((f->frametype == AST_FRAME_DTMF) && (f->subclass.integer == '#')) {
|
|
res = 0;
|
|
ast_frfree(f);
|
|
goto end;
|
|
}
|
|
ast_frfree(f);
|
|
}
|
|
end:
|
|
return res;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
return ast_unregister_application(app);
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
return ast_register_application_xml(app, echo_exec);
|
|
}
|
|
|
|
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Simple Echo Application");
|