c26c190711
This patch is the foundation of an entire new way of looking at media in Asterisk. The code present in this patch is everything required to complete phase1 of my Media Architecture proposal. For more information about this project visit the link below. https://wiki.asterisk.org/wiki/display/AST/Media+Architecture+Proposal The primary function of this patch is to convert all the usages of format bitfields in Asterisk to use the new format and format_cap APIs. Functionally no change in behavior should be present in this patch. Thanks to twilson and russell for all the time they spent reviewing these changes. Review: https://reviewboard.asterisk.org/r/1083/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@306010 65c4cc65-6c06-0410-ace0-fbb531ad65f3
93 lines
2.1 KiB
C
93 lines
2.1 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
|
|
*/
|
|
|
|
#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");
|