mirror of
https://github.com/asterisk/asterisk.git
synced 2026-07-04 22:07:28 -07:00
Luigi Rizzo
51391e6b09
In this commit: - move the ast_register/unregister_app functions to module.h to avoid the need to include pbx.h for the simpler apps; - move the ast_group structure to channel.h to remove the dependency of app.h on linkedlists.h Note, this is a long process that I am doing in small steps. The main difficulty is that now for each subsystem we have a single header (e.g. channel.h) included by the subsystem provider (usually one file, e.g. channel.c) and by its clients (dozens of them, e.g. we have some 70+ apps and 30+ functions). This requires the clients to include all the extra headers required by the provider (eg. lock.h, linkedlists.h, definitions of substructures...) even though many of the clients would be just happy with opaque struct declarations and function prototypes. The long term plan is to eventually rectify this structure so that the compilation can become faster, and also APIs are more stable. git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89522 65c4cc65-6c06-0410-ace0-fbb531ad65f3
88 lines
2.0 KiB
C
88 lines
2.0 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief Echo application -- play back what you hear to evaluate latency
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* \ingroup applications
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*/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/file.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/channel.h"
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static char *app = "Echo";
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static char *synopsis = "Echo audio, video, or DTMF back to the calling party";
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static char *descrip =
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" Echo(): This application will echo any audio, video, or DTMF frames read from\n"
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"the calling channel back to itself. If the DTMF digit '#' is received, the\n"
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"application will exit.\n";
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static int echo_exec(struct ast_channel *chan, void *data)
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{
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int res = -1;
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int format;
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format = ast_best_codec(chan->nativeformats);
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ast_set_write_format(chan, format);
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ast_set_read_format(chan, format);
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while (ast_waitfor(chan, -1) > -1) {
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struct ast_frame *f = ast_read(chan);
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if (!f)
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break;
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f->delivery.tv_sec = 0;
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f->delivery.tv_usec = 0;
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if (ast_write(chan, f)) {
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ast_frfree(f);
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goto end;
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}
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if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '#')) {
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res = 0;
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ast_frfree(f);
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goto end;
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}
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ast_frfree(f);
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}
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end:
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return res;
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}
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static int unload_module(void)
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{
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return ast_unregister_application(app);
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}
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static int load_module(void)
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{
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return ast_register_application(app, echo_exec, synopsis, descrip);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Simple Echo Application");
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