There can be one and only one thread handling a channel's media at a time. Otherwise, we don't know which thread is going to handle the media frames. ASTERISK-27625 Change-Id: Ia341f1a6f4d54f2022261abec9021fe5b2eb4905
200 lines
5.3 KiB
C
200 lines
5.3 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 App to send DTMF digits
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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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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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#include "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/app.h"
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#include "asterisk/manager.h"
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#include "asterisk/channel.h"
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/*** DOCUMENTATION
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<application name="SendDTMF" language="en_US">
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<synopsis>
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Sends arbitrary DTMF digits
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</synopsis>
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<syntax>
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<parameter name="digits" required="true">
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<para>List of digits 0-9,*#,a-d,A-D to send also w for a half second pause,
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W for a one second pause, and f or F for a flash-hook if the channel supports
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flash-hook.</para>
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</parameter>
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<parameter name="timeout_ms" required="false">
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<para>Amount of time to wait in ms between tones. (defaults to .25s)</para>
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</parameter>
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<parameter name="duration_ms" required="false">
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<para>Duration of each digit</para>
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</parameter>
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<parameter name="channel" required="false">
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<para>Channel where digits will be played</para>
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</parameter>
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</syntax>
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<description>
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<para>It will send all digits or terminate if it encounters an error.</para>
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</description>
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<see-also>
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<ref type="application">Read</ref>
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</see-also>
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</application>
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<manager name="PlayDTMF" language="en_US">
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<synopsis>
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Play DTMF signal on a specific channel.
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</synopsis>
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<syntax>
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<xi:include xpointer="xpointer(/docs/manager[@name='Login']/syntax/parameter[@name='ActionID'])" />
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<parameter name="Channel" required="true">
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<para>Channel name to send digit to.</para>
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</parameter>
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<parameter name="Digit" required="true">
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<para>The DTMF digit to play.</para>
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</parameter>
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<parameter name="Duration" required="false">
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<para>The duration, in milliseconds, of the digit to be played.</para>
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</parameter>
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</syntax>
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<description>
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<para>Plays a dtmf digit on the specified channel.</para>
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</description>
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</manager>
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***/
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static const char senddtmf_name[] = "SendDTMF";
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static int senddtmf_exec(struct ast_channel *chan, const char *vdata)
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{
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int res;
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char *data;
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int dinterval = 0, duration = 0;
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struct ast_channel *chan_found = NULL;
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struct ast_channel *chan_dest = chan;
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struct ast_channel *chan_autoservice = NULL;
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(digits);
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AST_APP_ARG(dinterval);
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AST_APP_ARG(duration);
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AST_APP_ARG(channel);
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);
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if (ast_strlen_zero(vdata)) {
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ast_log(LOG_WARNING, "SendDTMF requires an argument\n");
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return 0;
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}
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data = ast_strdupa(vdata);
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AST_STANDARD_APP_ARGS(args, data);
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if (ast_strlen_zero(args.digits)) {
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ast_log(LOG_WARNING, "The digits argument is required (0-9,*#,a-d,A-D,wfF)\n");
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return 0;
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}
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if (!ast_strlen_zero(args.dinterval)) {
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ast_app_parse_timelen(args.dinterval, &dinterval, TIMELEN_MILLISECONDS);
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}
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if (!ast_strlen_zero(args.duration)) {
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ast_app_parse_timelen(args.duration, &duration, TIMELEN_MILLISECONDS);
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}
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if (!ast_strlen_zero(args.channel)) {
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chan_found = ast_channel_get_by_name(args.channel);
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if (!chan_found) {
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ast_log(LOG_WARNING, "No such channel: %s\n", args.channel);
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return 0;
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}
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chan_dest = chan_found;
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if (chan_found != chan) {
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chan_autoservice = chan;
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}
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}
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res = ast_dtmf_stream(chan_dest, chan_autoservice, args.digits,
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dinterval <= 0 ? 250 : dinterval, duration);
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if (chan_found) {
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ast_channel_unref(chan_found);
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}
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return chan_autoservice ? 0 : res;
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}
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static int manager_play_dtmf(struct mansession *s, const struct message *m)
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{
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const char *channel = astman_get_header(m, "Channel");
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const char *digit = astman_get_header(m, "Digit");
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const char *duration = astman_get_header(m, "Duration");
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struct ast_channel *chan;
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unsigned int duration_ms = 0;
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if (!(chan = ast_channel_get_by_name(channel))) {
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astman_send_error(s, m, "Channel not found");
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return 0;
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}
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if (ast_strlen_zero(digit)) {
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astman_send_error(s, m, "No digit specified");
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chan = ast_channel_unref(chan);
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return 0;
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}
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if (!ast_strlen_zero(duration) && (sscanf(duration, "%30u", &duration_ms) != 1)) {
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astman_send_error(s, m, "Could not convert Duration parameter");
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chan = ast_channel_unref(chan);
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return 0;
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}
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ast_senddigit_external(chan, *digit, duration_ms);
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chan = ast_channel_unref(chan);
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astman_send_ack(s, m, "DTMF successfully queued");
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return 0;
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}
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static int unload_module(void)
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{
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int res;
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res = ast_unregister_application(senddtmf_name);
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res |= ast_manager_unregister("PlayDTMF");
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return res;
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}
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static int load_module(void)
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{
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int res;
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res = ast_manager_register_xml("PlayDTMF", EVENT_FLAG_CALL, manager_play_dtmf);
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res |= ast_register_application_xml(senddtmf_name, senddtmf_exec);
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return res;
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Send DTMF digits Application");
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