231 lines
6.3 KiB
C
231 lines
6.3 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 Trivial application to control playback of a sound file
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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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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/pbx.h"
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#include "asterisk/app.h"
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#include "asterisk/module.h"
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/*** DOCUMENTATION
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<application name="ControlPlayback" language="en_US">
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<synopsis>
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Play a file with fast forward and rewind.
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</synopsis>
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<syntax>
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<parameter name="filename" required="true" />
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<parameter name="skipms">
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<para>This is number of milliseconds to skip when rewinding or
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fast-forwarding.</para>
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</parameter>
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<parameter name="ff">
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<para>Fast-forward when this DTMF digit is received. (defaults to <literal>#</literal>)</para>
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</parameter>
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<parameter name="rew">
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<para>Rewind when this DTMF digit is received. (defaults to <literal>*</literal>)</para>
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</parameter>
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<parameter name="stop">
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<para>Stop playback when this DTMF digit is received.</para>
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</parameter>
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<parameter name="pause">
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<para>Pause playback when this DTMF digit is received.</para>
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</parameter>
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<parameter name="restart">
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<para>Restart playback when this DTMF digit is received.</para>
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</parameter>
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<parameter name="options">
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<optionlist>
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<option name="o">
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<argument name="time" required="true">
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<para>Start at <replaceable>time</replaceable> ms from the
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beginning of the file.</para>
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</argument>
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</option>
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</optionlist>
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</parameter>
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</syntax>
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<description>
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<para>This application will play back the given <replaceable>filename</replaceable>.</para>
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<para>It sets the following channel variables upon completion:</para>
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<variablelist>
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<variable name="CPLAYBACKSTATUS">
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<para>Contains the status of the attempt as a text string</para>
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<value name="SUCCESS" />
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<value name="USERSTOPPED" />
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<value name="ERROR" />
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</variable>
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<variable name="CPLAYBACKOFFSET">
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<para>Contains the offset in ms into the file where playback
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was at when it stopped. <literal>-1</literal> is end of file.</para>
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</variable>
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<variable name="CPLAYBACKSTOPKEY">
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<para>If the playback is stopped by the user this variable contains
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the key that was pressed.</para>
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</variable>
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</variablelist>
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</description>
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</application>
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***/
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static const char app[] = "ControlPlayback";
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enum {
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OPT_OFFSET = (1 << 1),
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};
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enum {
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OPT_ARG_OFFSET = 0,
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/* must stay as the last entry ... */
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OPT_ARG_ARRAY_LEN,
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};
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AST_APP_OPTIONS(cpb_opts, BEGIN_OPTIONS
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AST_APP_OPTION_ARG('o', OPT_OFFSET, OPT_ARG_OFFSET),
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END_OPTIONS
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);
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static int is_on_phonepad(char key)
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{
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return key == 35 || key == 42 || (key >= 48 && key <= 57);
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}
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static int is_argument(const char *haystack, int needle)
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{
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if (ast_strlen_zero(haystack))
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return 0;
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if (strchr(haystack, needle))
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return -1;
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return 0;
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}
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static int controlplayback_exec(struct ast_channel *chan, const char *data)
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{
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int res = 0;
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int skipms = 0;
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long offsetms = 0;
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char offsetbuf[20];
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char stopkeybuf[2];
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char *tmp;
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struct ast_flags opts = { 0, };
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char *opt_args[OPT_ARG_ARRAY_LEN];
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AST_DECLARE_APP_ARGS(args,
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AST_APP_ARG(filename);
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AST_APP_ARG(skip);
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AST_APP_ARG(fwd);
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AST_APP_ARG(rev);
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AST_APP_ARG(stop);
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AST_APP_ARG(pause);
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AST_APP_ARG(restart);
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AST_APP_ARG(options);
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);
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if (ast_strlen_zero(data)) {
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ast_log(LOG_WARNING, "ControlPlayback requires an argument (filename)\n");
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return -1;
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}
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tmp = ast_strdupa(data);
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AST_STANDARD_APP_ARGS(args, tmp);
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if (args.argc < 1) {
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ast_log(LOG_WARNING, "ControlPlayback requires an argument (filename)\n");
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return -1;
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}
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skipms = args.skip ? (atoi(args.skip) ? atoi(args.skip) : 3000) : 3000;
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if (!args.fwd || !is_on_phonepad(*args.fwd)) {
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char *digit = "#";
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if (!is_argument(args.rev, *digit) && !is_argument(args.stop, *digit) && !is_argument(args.pause, *digit) && !is_argument(args.restart, *digit))
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args.fwd = digit;
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else
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args.fwd = NULL;
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}
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if (!args.rev || !is_on_phonepad(*args.rev)) {
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char *digit = "*";
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if (!is_argument(args.fwd, *digit) && !is_argument(args.stop, *digit) && !is_argument(args.pause, *digit) && !is_argument(args.restart, *digit))
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args.rev = digit;
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else
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args.rev = NULL;
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}
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ast_debug(1, "Forward key = %s, Rewind key = %s\n", args.fwd, args.rev);
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if (args.stop && !is_on_phonepad(*args.stop))
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args.stop = NULL;
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if (args.pause && !is_on_phonepad(*args.pause))
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args.pause = NULL;
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if (args.restart && !is_on_phonepad(*args.restart))
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args.restart = NULL;
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if (args.options) {
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ast_app_parse_options(cpb_opts, &opts, opt_args, args.options);
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if (ast_test_flag(&opts, OPT_OFFSET))
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offsetms = atol(opt_args[OPT_ARG_OFFSET]);
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}
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res = ast_control_streamfile(chan, args.filename, args.fwd, args.rev, args.stop, args.pause, args.restart, skipms, &offsetms);
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/* If we stopped on one of our stop keys, return 0 */
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if (res > 0 && args.stop && strchr(args.stop, res)) {
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pbx_builtin_setvar_helper(chan, "CPLAYBACKSTATUS", "USERSTOPPED");
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snprintf(stopkeybuf, sizeof(stopkeybuf), "%c", res);
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pbx_builtin_setvar_helper(chan, "CPLAYBACKSTOPKEY", stopkeybuf);
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res = 0;
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} else {
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if (res < 0) {
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res = 0;
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pbx_builtin_setvar_helper(chan, "CPLAYBACKSTATUS", "ERROR");
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} else
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pbx_builtin_setvar_helper(chan, "CPLAYBACKSTATUS", "SUCCESS");
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}
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snprintf(offsetbuf, sizeof(offsetbuf), "%ld", offsetms);
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pbx_builtin_setvar_helper(chan, "CPLAYBACKOFFSET", offsetbuf);
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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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int res;
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res = ast_unregister_application(app);
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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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return ast_register_application_xml(app, controlplayback_exec);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Control Playback Application");
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