Fri Jul 15 2011 11:59:07

Asterisk developer's documentation


app_playback.c File Reference

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

#include "asterisk.h"
#include "asterisk/file.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/app.h"
#include "asterisk/say.h"
#include "asterisk/cli.h"
Include dependency graph for app_playback.c:

Go to the source code of this file.

Data Structures

struct  say_args_t

Functions

static void __reg_module (void)
static char * __say_cli_init (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static void __unreg_module (void)
static int do_say (say_args_t *a, const char *s, const char *options, int depth)
static int load_module (void)
static int playback_exec (struct ast_channel *chan, void *data)
static int reload (void)
static void restore_say_mode (void *arg)
static int s_streamwait3 (const say_args_t *a, const char *fn)
static void save_say_mode (const void *arg)
static int say_date (struct ast_channel *chan, time_t t, const char *ints, const char *lang)
static int say_date_generic (struct ast_channel *chan, time_t t, const char *ints, const char *lang, const char *format, const char *timezonename, const char *prefix)
static int say_date_with_format (struct ast_channel *chan, time_t t, const char *ints, const char *lang, const char *format, const char *timezonename)
static int say_datetime (struct ast_channel *chan, time_t t, const char *ints, const char *lang)
static int say_enumeration_full (struct ast_channel *chan, int num, const char *ints, const char *lang, const char *options, int audiofd, int ctrlfd)
static int say_full (struct ast_channel *chan, const char *string, const char *ints, const char *lang, const char *options, int audiofd, int ctrlfd)
static int say_init_mode (const char *mode)
static int say_number_full (struct ast_channel *chan, int num, const char *ints, const char *lang, const char *options, int audiofd, int ctrlfd)
static int say_time (struct ast_channel *chan, time_t t, const char *ints, const char *lang)
static int unload_module (void)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Sound File 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, .reload = reload, }
static char * app = "Playback"
static struct ast_module_infoast_module_info = &__mod_info
static struct ast_cli_entry cli_playback []
static const void * say_api_buf [40]
static struct ast_configsay_cfg = NULL
static const char * say_new = "new"
static const char * say_old = "old"

Detailed Description

Trivial application to playback a sound file.

Author:
Mark Spencer <markster@digium.com>

Definition in file app_playback.c.


Function Documentation

static void __reg_module ( void  ) [static]

Definition at line 554 of file app_playback.c.

static char* __say_cli_init ( struct ast_cli_entry e,
int  cmd,
struct ast_cli_args a 
) [static]

Definition at line 380 of file app_playback.c.

References ast_cli_args::argc, ast_cli_entry::args, ast_cli_args::argv, ast_cli(), CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_cli_args::fd, say_init_mode(), say_old, and ast_cli_entry::usage.

{
   const char *old_mode = say_api_buf[0] ? say_new : say_old;
   char *mode;
   switch (cmd) {
   case CLI_INIT:
      e->command = "say load [new|old]";
      e->usage = 
         "Usage: say load [new|old]\n"
         "       say load\n"
         "           Report status of current say mode\n"
         "       say load new\n"
         "           Set say method, configured in say.conf\n"
         "       say load old\n"
         "           Set old say method, coded in asterisk core\n";
      return NULL;
   case CLI_GENERATE:
      return NULL;
   }
   if (a->argc == 2) {
      ast_cli(a->fd, "say mode is [%s]\n", old_mode);
      return CLI_SUCCESS;
   } else if (a->argc != e->args)
      return CLI_SHOWUSAGE;
   mode = a->argv[2];
   if (!strcmp(mode, old_mode))
      ast_cli(a->fd, "say mode is %s already\n", mode);
   else
      if (say_init_mode(mode) == 0)
         ast_cli(a->fd, "setting say mode from %s to %s\n", old_mode, mode);

   return CLI_SUCCESS;
}
static void __unreg_module ( void  ) [static]

Definition at line 554 of file app_playback.c.

static int do_say ( say_args_t a,
const char *  s,
const char *  options,
int  depth 
) [static]

Definition at line 162 of file app_playback.c.

References ast_debug, ast_extension_match(), AST_LIST_INSERT_HEAD, ast_log(), ast_skip_blanks(), ast_strdupa, ast_trim_blanks(), ast_var_assign(), ast_var_delete(), ast_variable_browse(), ast_var_t::entries, varshead::first, say_args_t::language, LOG_WARNING, ast_variable::name, ast_variable::next, pbx_substitute_variables_varshead(), s_streamwait3(), strsep(), and ast_variable::value.

Referenced by say_date_generic(), say_enumeration_full(), say_full(), and say_number_full().

{
   struct ast_variable *v;
   char *lang, *x, *rule = NULL;
   int ret = 0;   
   struct varshead head = { .first = NULL, .last = NULL };
   struct ast_var_t *n;

   ast_debug(2, "string <%s> depth <%d>\n", s, depth);
   if (depth++ > 10) {
      ast_log(LOG_WARNING, "recursion too deep, exiting\n");
      return -1;
   } else if (!say_cfg) {
      ast_log(LOG_WARNING, "no say.conf, cannot spell '%s'\n", s);
      return -1;
   }

   /* scan languages same as in file.c */
   if (a->language == NULL)
      a->language = "en";     /* default */
   ast_debug(2, "try <%s> in <%s>\n", s, a->language);
   lang = ast_strdupa(a->language);
   for (;;) {
      for (v = ast_variable_browse(say_cfg, lang); v ; v = v->next) {
         if (ast_extension_match(v->name, s)) {
            rule = ast_strdupa(v->value);
            break;
         }
      }
      if (rule)
         break;
      if ( (x = strchr(lang, '_')) )
         *x = '\0';      /* try without suffix */
      else if (strcmp(lang, "en"))
         lang = "en";    /* last resort, try 'en' if not done yet */
      else
         break;
   }
   if (!rule)
      return 0;

   /* skip up to two prefixes to get the value */
   if ( (x = strchr(s, ':')) )
      s = x + 1;
   if ( (x = strchr(s, ':')) )
      s = x + 1;
   ast_debug(2, "value is <%s>\n", s);
   n = ast_var_assign("SAY", s);
   AST_LIST_INSERT_HEAD(&head, n, entries);

   /* scan the body, one piece at a time */
   while ( !ret && (x = strsep(&rule, ",")) ) { /* exit on key */
      char fn[128];
      const char *p, *fmt, *data; /* format and data pointers */

      /* prepare a decent file name */
      x = ast_skip_blanks(x);
      ast_trim_blanks(x);

      /* replace variables */
      pbx_substitute_variables_varshead(&head, x, fn, sizeof(fn));
      ast_debug(2, "doing [%s]\n", fn);

      /* locate prefix and data, if any */
      fmt = strchr(fn, ':');
      if (!fmt || fmt == fn)  {  /* regular filename */
         ret = s_streamwait3(a, fn);
         continue;
      }
      fmt++;
      data = strchr(fmt, ':');   /* colon before data */
      if (!data || data == fmt) {   /* simple prefix-fmt */
         ret = do_say(a, fn, options, depth);
         continue;
      }
      /* prefix:fmt:data */
      for (p = fmt; p < data && ret <= 0; p++) {
         char fn2[sizeof(fn)];
         if (*p == ' ' || *p == '\t')  /* skip blanks */
            continue;
         if (*p == '\'') {/* file name - we trim them */
            char *y;
            strcpy(fn2, ast_skip_blanks(p+1));  /* make a full copy */
            y = strchr(fn2, '\'');
            if (!y) {
               p = data;   /* invalid. prepare to end */
               break;
            }
            *y = '\0';
            ast_trim_blanks(fn2);
            p = strchr(p+1, '\'');
            ret = s_streamwait3(a, fn2);
         } else {
            int l = fmt-fn;
            strcpy(fn2, fn); /* copy everything */
            /* after prefix, append the format */
            fn2[l++] = *p;
            strcpy(fn2 + l, data);
            ret = do_say(a, fn2, options, depth);
         }
         
         if (ret) {
            break;
         }
      }
   }
   ast_var_delete(n);
   return ret;
}
static int playback_exec ( struct ast_channel chan,
void *  data 
) [static]

Definition at line 418 of file app_playback.c.

References ast_channel::_state, ast_cli_entry::args, ast_answer(), AST_APP_ARG, AST_DECLARE_APP_ARGS, ast_log(), AST_STANDARD_APP_ARGS, AST_STATE_UP, ast_stopstream(), ast_strdupa, ast_streamfile(), ast_strlen_zero(), ast_waitstream(), ast_channel::language, LOG_WARNING, ast_channel::name, pbx_builtin_setvar_helper(), say_full(), strcasestr(), and strsep().

Referenced by load_module().

{
   int res = 0;
   int mres = 0;
   char *tmp;
   int option_skip=0;
   int option_say=0;
   int option_noanswer = 0;

   AST_DECLARE_APP_ARGS(args,
      AST_APP_ARG(filenames);
      AST_APP_ARG(options);
   );
   
   if (ast_strlen_zero(data)) {
      ast_log(LOG_WARNING, "Playback requires an argument (filename)\n");
      return -1;
   }

   tmp = ast_strdupa(data);
   AST_STANDARD_APP_ARGS(args, tmp);

   if (args.options) {
      if (strcasestr(args.options, "skip"))
         option_skip = 1;
      if (strcasestr(args.options, "say"))
         option_say = 1;
      if (strcasestr(args.options, "noanswer"))
         option_noanswer = 1;
   } 
   if (chan->_state != AST_STATE_UP) {
      if (option_skip) {
         /* At the user's option, skip if the line is not up */
         goto done;
      } else if (!option_noanswer) {
         /* Otherwise answer unless we're supposed to send this while on-hook */
         res = ast_answer(chan);
      }
   }
   if (!res) {
      char *back = args.filenames;
      char *front;

      ast_stopstream(chan);
      while (!res && (front = strsep(&back, "&"))) {
         if (option_say)
            res = say_full(chan, front, "", chan->language, NULL, -1, -1);
         else
            res = ast_streamfile(chan, front, chan->language);
         if (!res) { 
            res = ast_waitstream(chan, "");  
            ast_stopstream(chan);
         } else {
            ast_log(LOG_WARNING, "ast_streamfile failed on %s for %s\n", chan->name, (char *)data);
            res = 0;
            mres = 1;
         }
      }
   }
done:
   pbx_builtin_setvar_helper(chan, "PLAYBACKSTATUS", mres ? "FAILED" : "SUCCESS");
   return res;
}
static int reload ( void  ) [static]

Definition at line 482 of file app_playback.c.

References ast_config_destroy(), ast_config_load, ast_extension_match(), ast_log(), ast_variable_browse(), CONFIG_FLAG_FILEUNCHANGED, CONFIG_STATUS_FILEINVALID, CONFIG_STATUS_FILEUNCHANGED, LOG_ERROR, LOG_NOTICE, ast_variable::name, ast_variable::next, say_init_mode(), and ast_variable::value.

{
   struct ast_variable *v;
   struct ast_flags config_flags = { CONFIG_FLAG_FILEUNCHANGED };
   struct ast_config *newcfg;

   if ((newcfg = ast_config_load("say.conf", config_flags)) == CONFIG_STATUS_FILEUNCHANGED) {
      return 0;
   } else if (newcfg == CONFIG_STATUS_FILEINVALID) {
      ast_log(LOG_ERROR, "Config file say.conf is in an invalid format.  Aborting.\n");
      return 0;
   }

   if (say_cfg) {
      ast_config_destroy(say_cfg);
      ast_log(LOG_NOTICE, "Reloading say.conf\n");
      say_cfg = newcfg;
   }

   if (say_cfg) {
      for (v = ast_variable_browse(say_cfg, "general"); v ; v = v->next) {
            if (ast_extension_match(v->name, "mode")) {
            say_init_mode(v->value);
            break;
         }
      }
   }
   
   /*
    * XXX here we should sort rules according to the same order
    * we have in pbx.c so we have the same matching behaviour.
    */
   return 0;
}
static int s_streamwait3 ( const say_args_t a,
const char *  fn 
) [static]

Definition at line 144 of file app_playback.c.

References ast_log(), ast_stopstream(), ast_streamfile(), ast_waitstream(), ast_waitstream_full(), say_args_t::audiofd, say_args_t::chan, say_args_t::ctrlfd, say_args_t::ints, say_args_t::language, and LOG_WARNING.

Referenced by do_say().

{
   int res = ast_streamfile(a->chan, fn, a->language);
   if (res) {
      ast_log(LOG_WARNING, "Unable to play message %s\n", fn);
      return res;
   }
   res = (a->audiofd  > -1 && a->ctrlfd > -1) ?
   ast_waitstream_full(a->chan, a->ints, a->audiofd, a->ctrlfd) :
   ast_waitstream(a->chan, a->ints);
   ast_stopstream(a->chan);
   return res;  
}
static int say_date ( struct ast_channel chan,
time_t  t,
const char *  ints,
const char *  lang 
) [static]

Definition at line 331 of file app_playback.c.

References say_date_generic().

Referenced by say_init_mode().

{
   return say_date_generic(chan, t, ints, lang, "", NULL, "date");
}
static int say_date_generic ( struct ast_channel chan,
time_t  t,
const char *  ints,
const char *  lang,
const char *  format,
const char *  timezonename,
const char *  prefix 
) [static]

Definition at line 300 of file app_playback.c.

References ast_localtime(), buf, chan, do_say(), ast_tm::tm_hour, ast_tm::tm_mday, ast_tm::tm_min, ast_tm::tm_mon, ast_tm::tm_sec, ast_tm::tm_wday, ast_tm::tm_yday, and ast_tm::tm_year.

Referenced by say_date(), say_date_with_format(), say_datetime(), and say_time().

{
   char buf[128];
   struct ast_tm tm;
   struct timeval when = { t, 0 };
   say_args_t a = { chan, ints, lang, -1, -1 };
   if (format == NULL)
      format = "";

   ast_localtime(&when, &tm, NULL);
   snprintf(buf, sizeof(buf), "%s:%s:%04d%02d%02d%02d%02d.%02d-%d-%3d",
      prefix,
      format,
      tm.tm_year+1900,
      tm.tm_mon+1,
      tm.tm_mday,
      tm.tm_hour,
      tm.tm_min,
      tm.tm_sec,
      tm.tm_wday,
      tm.tm_yday);
   return do_say(&a, buf, NULL, 0);
}
static int say_date_with_format ( struct ast_channel chan,
time_t  t,
const char *  ints,
const char *  lang,
const char *  format,
const char *  timezonename 
) [static]

Definition at line 325 of file app_playback.c.

References say_date_generic().

Referenced by say_init_mode().

{
   return say_date_generic(chan, t, ints, lang, format, timezonename, "datetime");
}
static int say_datetime ( struct ast_channel chan,
time_t  t,
const char *  ints,
const char *  lang 
) [static]

Definition at line 341 of file app_playback.c.

References say_date_generic().

Referenced by say_init_mode().

{
   return say_date_generic(chan, t, ints, lang, "", NULL, "datetime");
}
static int say_enumeration_full ( struct ast_channel chan,
int  num,
const char *  ints,
const char *  lang,
const char *  options,
int  audiofd,
int  ctrlfd 
) [static]

Definition at line 290 of file app_playback.c.

References buf, chan, and do_say().

Referenced by say_init_mode().

{
   char buf[64];
   say_args_t a = { chan, ints, lang, audiofd, ctrlfd };
   snprintf(buf, sizeof(buf), "enum:%d", num);
   return do_say(&a, buf, options, 0);
}
static int say_full ( struct ast_channel chan,
const char *  string,
const char *  ints,
const char *  lang,
const char *  options,
int  audiofd,
int  ctrlfd 
) [static]

Definition at line 272 of file app_playback.c.

References chan, and do_say().

Referenced by playback_exec().

{
   say_args_t a = { chan, ints, lang, audiofd, ctrlfd };
   return do_say(&a, string, options, 0);
}
static int say_init_mode ( const char *  mode) [static]
static int say_number_full ( struct ast_channel chan,
int  num,
const char *  ints,
const char *  lang,
const char *  options,
int  audiofd,
int  ctrlfd 
) [static]

Definition at line 280 of file app_playback.c.

References buf, chan, and do_say().

Referenced by say_init_mode().

{
   char buf[64];
   say_args_t a = { chan, ints, lang, audiofd, ctrlfd };
   snprintf(buf, sizeof(buf), "num:%d", num);
   return do_say(&a, buf, options, 0);
}
static int say_time ( struct ast_channel chan,
time_t  t,
const char *  ints,
const char *  lang 
) [static]

Definition at line 336 of file app_playback.c.

References say_date_generic().

Referenced by say_init_mode().

{
   return say_date_generic(chan, t, ints, lang, "", NULL, "time");
}
static int unload_module ( void  ) [static]

Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT , .description = "Sound File 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, .reload = reload, } [static]

Definition at line 554 of file app_playback.c.

char* app = "Playback" [static]

Definition at line 84 of file app_playback.c.

Definition at line 554 of file app_playback.c.

struct ast_cli_entry cli_playback[] [static]
Initial value:
 {
   AST_CLI_DEFINE(__say_cli_init, "Set or show the say mode"),
}

Definition at line 414 of file app_playback.c.

const void* say_api_buf[40] [static]

Definition at line 92 of file app_playback.c.

struct ast_config* say_cfg = NULL [static]

Definition at line 86 of file app_playback.c.

const char* say_new = "new" [static]

Definition at line 94 of file app_playback.c.

const char* say_old = "old" [static]

Definition at line 93 of file app_playback.c.

Referenced by __say_cli_init().