app_playtones.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2009, Digium, Inc.
 *
 * Russell Bryant <russell@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 Playtones application
 *
 * \author Russell Bryant <russell@digium.com>
 *
 * \ingroup applications
 */
 
/*** MODULEINFO
    <support_level>core</support_level>
 ***/
 
#include "asterisk.h"
 
#include "asterisk/module.h"
#include "asterisk/pbx.h"
#include "asterisk/channel.h"
#include "asterisk/indications.h"
 
static const char playtones_app[] = "PlayTones";
static const char stopplaytones_app[] = "StopPlayTones";
 
/*** DOCUMENTATION
    <application name="PlayTones" language="en_US">
        <synopsis>
            Play a tone list.
        </synopsis>
        <syntax>
            <parameter name="arg" required="true">
                <para>Arg is either the tone name defined in the <filename>indications.conf</filename>
                configuration file, or a directly specified list of frequencies and durations.</para>
            </parameter>
        </syntax>
        <description>
            <para>Plays a tone list. Execution will continue with the next step in the dialplan
            immediately while the tones continue to play.</para>
            <para>See the sample <filename>indications.conf</filename> for a description of the
            specification of a tonelist.</para>
        </description>
        <see-also>
            <ref type="application">StopPlayTones</ref>
        </see-also>
    </application>
    <application name="StopPlayTones" language="en_US">
        <synopsis>
            Stop playing a tone list.
        </synopsis>
        <syntax />
        <description>
            <para>Stop playing a tone list, initiated by PlayTones().</para>
        </description>
        <see-also>
            <ref type="application">PlayTones</ref>
        </see-also>
    </application>
 ***/
 
static int handle_playtones(struct ast_channel *chan, const char *data)
{
    struct ast_tone_zone_sound *ts;
    int res;
    const char *str = data;
 
    if (ast_strlen_zero(str)) {
        ast_log(LOG_NOTICE,"Nothing to play\n");
        return -1;
    }
 
    ts = ast_get_indication_tone(ast_channel_zone(chan), str);
 
    if (ts) {
        res = ast_playtones_start(chan, 0, ts->data, 0);
        ts = ast_tone_zone_sound_unref(ts);
    } else {
        res = ast_playtones_start(chan, 0, str, 0);
    }
 
    if (res) {
        ast_log(LOG_NOTICE, "Unable to start playtones\n");
    }
 
    return res;
}
 
static int handle_stopplaytones(struct ast_channel *chan, const char *data)
{
    ast_playtones_stop(chan);
 
    return 0;
}
 
static int unload_module(void)
{
    int res;
 
    res = ast_unregister_application(playtones_app);
    res |= ast_unregister_application(stopplaytones_app);
 
    return res;
}
 
static int load_module(void)
{
    int res;
 
    res = ast_register_application_xml(playtones_app, handle_playtones);
    res |= ast_register_application_xml(stopplaytones_app, handle_stopplaytones);
 
    return res ? AST_MODULE_LOAD_DECLINE : AST_MODULE_LOAD_SUCCESS;
}
 
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Playtones Application");