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