Mon Mar 12 2012 21:23:19

Asterisk developer's documentation


app_controlplayback.c File Reference

Trivial application to control playback of a sound file. More...

#include "asterisk.h"
#include "asterisk/pbx.h"
#include "asterisk/app.h"
#include "asterisk/module.h"
Include dependency graph for app_controlplayback.c:

Go to the source code of this file.

Enumerations

enum  { OPT_OFFSET = (1 << 1) }
enum  { OPT_ARG_OFFSET = 0, OPT_ARG_ARRAY_LEN }

Functions

static void __reg_module (void)
static void __unreg_module (void)
static int controlplayback_exec (struct ast_channel *chan, const char *data)
static int is_argument (const char *haystack, int needle)
static int is_on_phonepad (char key)
static int load_module (void)
static int unload_module (void)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Control Playback Application" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, }
static const char app [] = "ControlPlayback"
static struct ast_module_infoast_module_info = &__mod_info
static struct ast_app_option cpb_opts [128] = { [ 'o' ] = { .flag = OPT_OFFSET , .arg_index = OPT_ARG_OFFSET + 1 }, }

Detailed Description

Trivial application to control playback of a sound file.

Author:
Mark Spencer <markster@digium.com>

Definition in file app_controlplayback.c.


Enumeration Type Documentation

anonymous enum
Enumerator:
OPT_OFFSET 

Definition at line 101 of file app_controlplayback.c.

     {
   OPT_OFFSET = (1 << 1),
};
anonymous enum
Enumerator:
OPT_ARG_OFFSET 
OPT_ARG_ARRAY_LEN 

Definition at line 105 of file app_controlplayback.c.

     {
   OPT_ARG_OFFSET = 0,
   /* must stay as the last entry ... */
   OPT_ARG_ARRAY_LEN,
};

Function Documentation

static void __reg_module ( void  ) [static]

Definition at line 230 of file app_controlplayback.c.

static void __unreg_module ( void  ) [static]

Definition at line 230 of file app_controlplayback.c.

static int controlplayback_exec ( struct ast_channel chan,
const char *  data 
) [static]

Definition at line 132 of file app_controlplayback.c.

References args, AST_APP_ARG, ast_app_parse_options(), ast_control_streamfile(), ast_debug, AST_DECLARE_APP_ARGS, ast_log(), AST_STANDARD_APP_ARGS, ast_strdupa, ast_strlen_zero(), ast_test_flag, cpb_opts, is_argument(), is_on_phonepad(), LOG_WARNING, OPT_ARG_ARRAY_LEN, OPT_ARG_OFFSET, OPT_OFFSET, pbx_builtin_setvar_helper(), skipms, and stop.

Referenced by load_module().

{
   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 is_argument ( const char *  haystack,
int  needle 
) [static]

Definition at line 121 of file app_controlplayback.c.

References ast_strlen_zero().

Referenced by controlplayback_exec().

{
   if (ast_strlen_zero(haystack))
      return 0;

   if (strchr(haystack, needle))
      return -1;

   return 0;
}
static int is_on_phonepad ( char  key) [static]

Definition at line 116 of file app_controlplayback.c.

Referenced by controlplayback_exec().

{
   return key == 35 || key == 42 || (key >= 48 && key <= 57);
}
static int load_module ( void  ) [static]
static int unload_module ( void  ) [static]

Definition at line 218 of file app_controlplayback.c.

References ast_unregister_application().

{
   int res;
   res = ast_unregister_application(app);
   return res;
}

Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_LOAD_ORDER , .description = "Control Playback Application" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = AST_BUILDOPT_SUM, .load = load_module, .unload = unload_module, .load_pri = AST_MODPRI_DEFAULT, } [static]

Definition at line 230 of file app_controlplayback.c.

const char app[] = "ControlPlayback" [static]

Definition at line 99 of file app_controlplayback.c.

Definition at line 230 of file app_controlplayback.c.

struct ast_app_option cpb_opts[128] = { [ 'o' ] = { .flag = OPT_OFFSET , .arg_index = OPT_ARG_OFFSET + 1 }, } [static]

Definition at line 114 of file app_controlplayback.c.

Referenced by controlplayback_exec().