Sat Nov 1 06:29:05 2008

Asterisk developer's documentation

---

file.h File Reference

Generic File Format Support. More...

#include "asterisk/channel.h"
#include "asterisk/frame.h"
#include <fcntl.h>

Include dependency graph for file.h:

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Go to the source code of this file.

Data Structures
struct	ast_filestream
struct	ast_format
struct	ast_format_lock
Defines
#define	AST_DIGIT_ANY   "0123456789#*ABCD"
#define	AST_DIGIT_ANYNUM   "0123456789"
#define	ast_format_register(f)   __ast_format_register(f, ast_module_info->self)
#define	AST_RESERVED_POINTERS   20
#define	SEEK_FORCECUR   10
Functions
int	__ast_format_register (const struct ast_format *f, struct ast_module *mod)
int	ast_applystream (struct ast_channel *chan, struct ast_filestream *s)
int	ast_closestream (struct ast_filestream *f)
int	ast_file_init (void)
int	ast_filecopy (const char *oldname, const char *newname, const char *fmt)
int	ast_filedelete (const char *filename, const char *fmt)
int	ast_fileexists (const char *filename, const char *fmt, const char *preflang)
int	ast_filerename (const char *oldname, const char *newname, const char *fmt)
int	ast_format_unregister (const char *name)
ast_filestream *	ast_openstream (struct ast_channel *chan, const char *filename, const char *preflang)
ast_filestream *	ast_openstream_full (struct ast_channel *chan, const char *filename, const char *preflang, int asis)
ast_filestream *	ast_openvstream (struct ast_channel *chan, const char *filename, const char *preflang)
int	ast_playstream (struct ast_filestream *s)
ast_filestream *	ast_readfile (const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
ast_frame *	ast_readframe (struct ast_filestream *s)
int	ast_seekstream (struct ast_filestream *fs, off_t sample_offset, int whence)
int	ast_stopstream (struct ast_channel *c)
	Stops a stream.
int	ast_stream_and_wait (struct ast_channel *chan, const char *file, const char *language, const char *digits)
int	ast_stream_fastforward (struct ast_filestream *fs, off_t ms)
int	ast_stream_rewind (struct ast_filestream *fs, off_t ms)
int	ast_streamfile (struct ast_channel *c, const char *filename, const char *preflang)
off_t	ast_tellstream (struct ast_filestream *fs)
int	ast_truncstream (struct ast_filestream *fs)
int	ast_waitstream (struct ast_channel *c, const char *breakon)
int	ast_waitstream_exten (struct ast_channel *c, const char *context)
int	ast_waitstream_fr (struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
int	ast_waitstream_full (struct ast_channel *c, const char *breakon, int audiofd, int monfd)
ast_filestream *	ast_writefile (const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
int	ast_writestream (struct ast_filestream *fs, struct ast_frame *f)

---

Detailed Description

Generic File Format Support.

Definition in file file.h.

---

Define Documentation

#define AST_DIGIT_ANY   "0123456789#*ABCD"

Convenient for waiting

Definition at line 40 of file file.h.

Referenced by __login_exec(), ast_ivr_menu_run_internal(), ast_play_and_wait(), ast_readstring_full(), ast_record_review(), bridge_playfile(), builtin_atxfer(), builtin_blindtransfer(), conf_exec(), conf_run(), dictate_exec(), directory_exec(), festival_exec(), get_folder(), ivr_dispatch(), pbx_builtin_background(), play_file(), play_mailbox_owner(), play_message(), play_message_callerid(), play_message_datetime(), play_message_duration(), play_record_review(), retrydial_exec(), say_and_wait(), say_position(), sayunixtime_exec(), try_calling(), vm_intro_gr(), vm_intro_he(), vm_intro_pt(), vm_intro_pt_BR(), and wait_file2().

#define AST_DIGIT_ANYNUM   "0123456789"

Definition at line 41 of file file.h.

Referenced by initreqprep().

#define ast_format_register

(

f

)

__ast_format_register(f, ast_module_info->self)

Definition at line 152 of file file.h.

Referenced by load_module().

#define AST_RESERVED_POINTERS   20

Definition at line 413 of file file.h.

#define SEEK_FORCECUR   10

Definition at line 145 of file file.h.

Referenced by __ast_read(), ast_write(), au_seek(), g729_seek(), gsm_seek(), ilbc_seek(), pcm_seek(), slinear_seek(), vox_seek(), and wav_seek().

---

Function Documentation

int __ast_format_register	(	const struct ast_format *	f,
		struct ast_module *	mod
	)

Register a new file format capability Adds a format to Asterisk's format abilities. returns 0 on success, -1 on failure

Definition at line 68 of file file.c.

References ast_calloc, AST_LIST_INSERT_HEAD, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), ast_verbose(), ast_format::buf_size, ast_format::exts, f, LOG_WARNING, ast_format::module, ast_format::name, option_verbose, and VERBOSE_PREFIX_2.

{
   struct ast_format *tmp;

   if (AST_LIST_LOCK(&formats)) {
      ast_log(LOG_WARNING, "Unable to lock format list\n");
      return -1;
   }
   AST_LIST_TRAVERSE(&formats, tmp, list) {
      if (!strcasecmp(f->name, tmp->name)) {
         AST_LIST_UNLOCK(&formats);
         ast_log(LOG_WARNING, "Tried to register '%s' format, already registered\n", f->name);
         return -1;
      }
   }
   if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
      AST_LIST_UNLOCK(&formats);
      return -1;
   }
   *tmp = *f;
   tmp->module = mod;
   if (tmp->buf_size) {
      /*
       * Align buf_size properly, rounding up to the machine-specific
       * alignment for pointers.
       */
      struct _test_align { void *a, *b; } p;
      int align = (char *)&p.b - (char *)&p.a;
      tmp->buf_size = ((f->buf_size + align - 1)/align)*align;
   }
   
   memset(&tmp->list, 0, sizeof(tmp->list));

   AST_LIST_INSERT_HEAD(&formats, tmp, list);
   AST_LIST_UNLOCK(&formats);
   if (option_verbose > 1)
      ast_verbose( VERBOSE_PREFIX_2 "Registered file format %s, extension(s) %s\n", f->name, f->exts);

   return 0;
}

int ast_applystream	(	struct ast_channel *	chan,
		struct ast_filestream *	s
	)

Parameters:

	chan	channel to work
	s	ast_filestream to apply Returns 0 for success, -1 on failure

Definition at line 764 of file file.c.

References s.

Referenced by ast_streamfile(), handle_getoption(), handle_recordfile(), handle_streamfile(), and speech_streamfile().

{
   s->owner = chan;
   return 0;
}

int ast_closestream

(

struct ast_filestream *

f

)

Parameters:

f

filestream to close Close a playback or recording stream Returns 0 on success, -1 on failure

Definition at line 807 of file file.c.

References ast_closestream(), AST_FORMAT_MAX_AUDIO, ast_module_unref(), ast_safe_system(), AST_SCHED_DEL, ast_settimeout(), ast_translator_free_path(), ast_format::close, f, ast_format::format, free, and ast_format::module.

Referenced by __ast_play_and_record(), ast_closestream(), ast_filehelper(), ast_hangup(), ast_moh_files_next(), ast_monitor_start(), ast_monitor_stop(), ast_stopstream(), cli_audio_convert(), cli_audio_convert_deprecated(), dictate_exec(), gen_closestream(), handle_recordfile(), local_ast_moh_stop(), mixmonitor_thread(), moh_files_release(), and rpt().

{
   char *cmd = NULL;
   size_t size = 0;
   /* Stop a running stream if there is one */
   if (f->owner) {
      if (f->fmt->format < AST_FORMAT_MAX_AUDIO) {
         f->owner->stream = NULL;
         AST_SCHED_DEL(f->owner->sched, f->owner->streamid);
#ifdef HAVE_DAHDI
         ast_settimeout(f->owner, 0, NULL, NULL);
#endif         
      } else {
         f->owner->vstream = NULL;
         AST_SCHED_DEL(f->owner->sched, f->owner->vstreamid);
      }
   }
   /* destroy the translator on exit */
   if (f->trans)
      ast_translator_free_path(f->trans);

   if (f->realfilename && f->filename) {
         size = strlen(f->filename) + strlen(f->realfilename) + 15;
         cmd = alloca(size);
         memset(cmd,0,size);
         snprintf(cmd,size,"/bin/mv -f %s %s",f->filename,f->realfilename);
         ast_safe_system(cmd);
   }

   if (f->filename)
      free(f->filename);
   if (f->realfilename)
      free(f->realfilename);
   if (f->fmt->close)
      f->fmt->close(f);
   fclose(f->f);
   if (f->vfs)
      ast_closestream(f->vfs);
   if (f->orig_chan_name)
      free((void *) f->orig_chan_name);
   ast_module_unref(f->fmt->module);
   free(f);
   return 0;
}

int ast_file_init

(

void

)

Initializes all the various file stuff. Basically just registers the cli stuff Returns 0 all the time

Definition at line 1340 of file file.c.

References ast_cli_register_multiple(), and cli_file.

Referenced by main().

{
   ast_cli_register_multiple(cli_file, sizeof(cli_file) / sizeof(struct ast_cli_entry));
   return 0;
}

int ast_filecopy	(	const char *	oldname,
		const char *	newname,
		const char *	fmt
	)

Parameters:

	oldname	name of the file you wish to copy (minus extension)
	newname	name you wish the file to be copied to (minus extension)
	fmt	the format of the file Copy a given file in a given format, or if fmt is NULL, then do so for all

Definition at line 880 of file file.c.

References ast_filehelper().

Referenced by copy_plain_file(), and vm_forwardoptions().

{
   return ast_filehelper(filename, filename2, fmt, ACTION_COPY);
}

int ast_filedelete	(	const char *	filename,
		const char *	fmt
	)

Parameters:

	filename	name of the file you wish to delete (minus the extension)
	fmt	of the file Delete a given file in a given format, or if fmt is NULL, then do so for all

Definition at line 870 of file file.c.

References ACTION_DELETE, and ast_filehelper().

Referenced by __ast_play_and_record(), ast_monitor_start(), ast_monitor_stop(), cli_audio_convert(), cli_audio_convert_deprecated(), leave_voicemail(), play_mailbox_owner(), play_record_review(), vm_delete(), and vm_forwardoptions().

{
   return ast_filehelper(filename, NULL, fmt, ACTION_DELETE);
}

int ast_fileexists	(	const char *	filename,
		const char *	fmt,
		const char *	preflang
	)

Parameters:

	filename	name of the file you wish to check, minus the extension
	fmt	the format you wish to check (the extension)
	preflang	(the preferred language you wisht to find the file in) See if a given file exists in a given format. If fmt is NULL, any format is accepted. Returns -1 if file does not exist, non-zero positive otherwise.

Definition at line 856 of file file.c.

References ast_filestream::buf, and fileexists_core().

Referenced by app_exec(), ast_moh_files_next(), ast_monitor_start(), ast_monitor_stop(), common_exec(), conf_run(), last_message_index(), leave_voicemail(), play_greeting(), play_mailbox_owner(), play_message_callerid(), record_exec(), retrydial_exec(), say_character_str_full(), say_digit_str_full(), say_phonetic_str_full(), vm_intro(), vm_newuser(), vm_options(), and vm_tempgreeting().

{
   char *buf;
   int buflen;

   if (preflang == NULL)
      preflang = "";
   buflen = strlen(preflang) + strlen(filename) + 4;  /* room for everything */
   buf = alloca(buflen);
   if (buf == NULL)
      return 0;
   return fileexists_core(filename, fmt, preflang, buf, buflen);
}

int ast_filerename	(	const char *	oldname,
		const char *	newname,
		const char *	fmt
	)

Parameters:

	oldname	the name of the file you wish to act upon (minus the extension)
	newname	the name you wish to rename the file to (minus the extension)
	fmt	the format of the file Rename a given file in a given format, or if fmt is NULL, then do so for all Returns -1 on failure

Definition at line 875 of file file.c.

References ACTION_RENAME, and ast_filehelper().

Referenced by __ast_play_and_record(), ast_monitor_stop(), leave_voicemail(), play_record_review(), and rename_file().

{
   return ast_filehelper(filename, filename2, fmt, ACTION_RENAME);
}

int ast_format_unregister

(

const char *

name

)

Parameters:

name

the name of the format you wish to unregister Unregisters a format based on the name of the format. Returns 0 on success, -1 on failure to unregister

Definition at line 109 of file file.c.

References AST_LIST_LOCK, AST_LIST_REMOVE_CURRENT, AST_LIST_TRAVERSE_SAFE_BEGIN, AST_LIST_TRAVERSE_SAFE_END, AST_LIST_UNLOCK, ast_log(), ast_verbose(), free, LOG_WARNING, ast_format::name, option_verbose, and VERBOSE_PREFIX_2.

Referenced by unload_module().

{
   struct ast_format *tmp;
   int res = -1;

   if (AST_LIST_LOCK(&formats)) {
      ast_log(LOG_WARNING, "Unable to lock format list\n");
      return -1;
   }
   AST_LIST_TRAVERSE_SAFE_BEGIN(&formats, tmp, list) {
      if (!strcasecmp(name, tmp->name)) {
         AST_LIST_REMOVE_CURRENT(&formats, list);
         free(tmp);
         res = 0;
      }
   }
   AST_LIST_TRAVERSE_SAFE_END
   AST_LIST_UNLOCK(&formats);

   if (!res) {
      if (option_verbose > 1)
         ast_verbose( VERBOSE_PREFIX_2 "Unregistered format %s\n", name);
   } else
      ast_log(LOG_WARNING, "Tried to unregister format %s, already unregistered\n", name);

   return res;
}

struct ast_filestream* ast_openstream	(	struct ast_channel *	chan,
		const char *	filename,
		const char *	preflang
	)

Parameters:

	chan	channel to work with
	filename	to use
	preflang	prefered language to use Returns a ast_filestream pointer if it opens the file, NULL on error

Definition at line 571 of file file.c.

References ast_openstream_full().

Referenced by ast_streamfile(), dictate_exec(), handle_getoption(), handle_streamfile(), and speech_streamfile().

{
   return ast_openstream_full(chan, filename, preflang, 0);
}

struct ast_filestream* ast_openstream_full	(	struct ast_channel *	chan,
		const char *	filename,
		const char *	preflang,
		int	asis
	)

Parameters:

	chan	channel to work with
	filename	to use
	preflang	prefered language to use
	asis	if set, don't clear generators Returns a ast_filestream pointer if it opens the file, NULL on error

Definition at line 576 of file file.c.

References ACTION_OPEN, ast_deactivate_generator(), ast_filehelper(), AST_FORMAT_AUDIO_MASK, ast_log(), ast_set_write_format(), ast_stopstream(), ast_filestream::buf, fileexists_core(), LOG_WARNING, ast_channel::oldwriteformat, ast_channel::stream, and ast_channel::writeformat.

Referenced by ast_moh_files_next(), ast_openstream(), and gen_nextfile().

{
   /* 
    * Use fileexists_core() to find a file in a compatible
    * language and format, set up a suitable translator,
    * and open the stream.
    */
   int fmts, res, buflen;
   char *buf;

   if (!asis) {
      /* do this first, otherwise we detect the wrong writeformat */
      ast_stopstream(chan);
      if (chan->generator)
         ast_deactivate_generator(chan);
   }
   if (preflang == NULL)
      preflang = "";
   buflen = strlen(preflang) + strlen(filename) + 4;
   buf = alloca(buflen);
   if (buf == NULL)
      return NULL;
   fmts = fileexists_core(filename, NULL, preflang, buf, buflen);
   if (fmts > 0)
      fmts &= AST_FORMAT_AUDIO_MASK;
   if (fmts < 1) {
      ast_log(LOG_WARNING, "File %s does not exist in any format\n", filename);
      return NULL;
   }
   chan->oldwriteformat = chan->writeformat;
   /* Set the channel to a format we can work with */
   res = ast_set_write_format(chan, fmts);
   res = ast_filehelper(buf, chan, NULL, ACTION_OPEN);
   if (res >= 0)
      return chan->stream;
   return NULL;
}

struct ast_filestream* ast_openvstream	(	struct ast_channel *	chan,
		const char *	filename,
		const char *	preflang
	)

Parameters:

	chan	channel to work with
	filename	to use
	preflang	prefered language to use Returns a ast_filestream pointer if it opens the file, NULL on error

Definition at line 614 of file file.c.

References ACTION_OPEN, ast_filehelper(), AST_FORMAT_MAX_AUDIO, AST_FORMAT_MAX_VIDEO, ast_getformatname(), ast_log(), ast_filestream::buf, fileexists_core(), fmt, format, LOG_WARNING, ast_channel::nativeformats, and ast_channel::vstream.

Referenced by ast_streamfile(), handle_getoption(), and handle_streamfile().

{
   /* As above, but for video. But here we don't have translators
    * so we must enforce a format.
    */
   unsigned int format;
   char *buf;
   int buflen;

   if (preflang == NULL)
      preflang = "";
   buflen = strlen(preflang) + strlen(filename) + 4;
   buf = alloca(buflen);
   if (buf == NULL)
      return NULL;

   for (format = AST_FORMAT_MAX_AUDIO << 1; format <= AST_FORMAT_MAX_VIDEO; format = format << 1) {
      int fd;
      const char *fmt;

      if (!(chan->nativeformats & format))
         continue;
      fmt = ast_getformatname(format);
      if ( fileexists_core(filename, fmt, preflang, buf, buflen) < 1)   /* no valid format */
         continue;
      fd = ast_filehelper(buf, chan, fmt, ACTION_OPEN);
      if (fd >= 0)
         return chan->vstream;
      ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
   }
   return NULL;
}

int ast_playstream

(

struct ast_filestream *

s

)

Parameters:

s

filestream to play Returns 0 for success, -1 on failure

Definition at line 770 of file file.c.

References AST_FORMAT_MAX_AUDIO, ast_readaudio_callback(), ast_readvideo_callback(), FSREAD_FAILURE, and s.

Referenced by ast_streamfile(), handle_getoption(), handle_streamfile(), and speech_streamfile().

{
   enum fsread_res res;

   if (s->fmt->format < AST_FORMAT_MAX_AUDIO)
      res = ast_readaudio_callback(s);
   else
      res = ast_readvideo_callback(s);

   return (res == FSREAD_FAILURE) ? -1 : 0;
}

struct ast_filestream* ast_readfile	(	const char *	filename,
		const char *	type,
		const char *	comment,
		int	flags,
		int	check,
		mode_t	mode
	)

Parameters:

	filename	the name of the file to read from
	type	format of file you wish to read from
	comment	comment to go with
	flags	file flags
	check	(unimplemented, hence negligible)
	mode	Open mode Open an incoming file stream. flags are flags for the open() command, and if check is non-zero, then it will not read a file if there are any files that start with that name and have an extension Please note, this is a blocking function. Program execution will not return until ast_waitstream completes it's execution. Returns a struct ast_filestream on success, NULL on failure

Definition at line 916 of file file.c.

References ast_free, AST_LIST_LOCK, AST_LIST_TRAVERSE, AST_LIST_UNLOCK, ast_log(), build_filename(), errno, ast_format::exts, exts_compare(), f, ast_filestream::filename, ast_filestream::flags, ast_filestream::fmt, free, get_filestream(), LOG_WARNING, ast_filestream::mode, open_wrapper(), strdup, ast_filestream::trans, and ast_filestream::vfs.

Referenced by __ast_play_and_record(), cli_audio_convert(), and cli_audio_convert_deprecated().

{
   FILE *bfile;
   struct ast_format *f;
   struct ast_filestream *fs = NULL;
   char *fn;

   if (AST_LIST_LOCK(&formats)) {
      ast_log(LOG_WARNING, "Unable to lock format list\n");
      return NULL;
   }

   AST_LIST_TRAVERSE(&formats, f, list) {
      fs = NULL;
      if (!exts_compare(f->exts, type))
         continue;

      fn = build_filename(filename, type);
      errno = 0;
      bfile = fopen(fn, "r");
      if (!bfile || (fs = get_filestream(f, bfile)) == NULL ||
          open_wrapper(fs) ) {
         ast_log(LOG_WARNING, "Unable to open %s\n", fn);
         if (fs)
            ast_free(fs);
         fs = NULL;
         if (bfile)
            fclose(bfile);
         free(fn);
         continue;
      }
      /* found it */
      fs->trans = NULL;
      fs->fmt = f;
      fs->flags = flags;
      fs->mode = mode;
      fs->filename = strdup(filename);
      fs->vfs = NULL;
      break;
   }

   AST_LIST_UNLOCK(&formats);
   if (!fs) 
      ast_log(LOG_WARNING, "No such format '%s'\n", type);

   return fs;
}

struct ast_frame* ast_readframe

(

struct ast_filestream *

s

)

Parameters:

s

ast_filestream to act on Returns a frame or NULL if read failed

Definition at line 647 of file file.c.

References f, and s.

Referenced by __ast_play_and_record(), cli_audio_convert(), cli_audio_convert_deprecated(), dictate_exec(), gen_readframe(), and moh_files_readframe().

{
   struct ast_frame *f = NULL;
   int whennext = 0; 
   if (s && s->fmt)
      f = s->fmt->read(s, &whennext);
   return f;
}

int ast_seekstream	(	struct ast_filestream *	fs,
		off_t	sample_offset,
		int	whence
	)

Parameters:

	fs	ast_filestream to perform seek on
	sample_offset	numbers of samples to seek
	whence	SEEK_SET, SEEK_CUR, SEEK_END Returns 0 for success, or -1 for error

Definition at line 782 of file file.c.

References ast_filestream::fmt, and ast_format::seek.

Referenced by __ast_read(), ast_control_streamfile(), ast_stream_fastforward(), ast_stream_rewind(), ast_write(), dictate_exec(), handle_getoption(), handle_recordfile(), and handle_streamfile().

{
   return fs->fmt->seek(fs, sample_offset, whence);
}

int ast_stopstream

(

struct ast_channel *

c

)

Stops a stream.

Parameters:

c

The channel you wish to stop playback on

Stop playback of a stream

Return values:

0

always

Note:

The channel does not need to be locked before calling this function.

Definition at line 137 of file file.c.

References ast_channel_lock, ast_channel_unlock, ast_closestream(), ast_log(), ast_set_write_format(), LOG_WARNING, ast_channel::oldwriteformat, ast_channel::stream, and ast_channel::vstream.

Referenced by ast_adsi_transmit_message_full(), ast_control_streamfile(), ast_openstream_full(), ast_play_and_wait(), ast_readstring_full(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_enumeration_full_en(), ast_say_enumeration_full_he(), ast_say_number_full_cz(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_en(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_ge(), ast_say_number_full_gr(), ast_say_number_full_he(), ast_say_number_full_it(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), ast_say_number_full_tw(), background_detect_exec(), builtin_blindtransfer(), conf_exec(), conf_run(), directory_exec(), handle_getoption(), handle_streamfile(), ices_exec(), ivr_dispatch(), leave_voicemail(), mp3_exec(), NBScat_exec(), parkandannounce_exec(), pbx_builtin_background(), pl_odtworz_plik(), play_file(), play_mailbox_owner(), playback_exec(), queue_exec(), read_exec(), recordthread(), rpt_tele_thread(), s_streamwait3(), say_character_str_full(), say_digit_str_full(), say_phonetic_str_full(), saycharstr(), sayfile(), saynum(), send_morse(), send_tone_telemetry(), send_waveform_to_channel(), speech_background(), vm_authenticate(), vm_execmain(), wait_for_winner(), waitstream_core(), and zapateller_exec().

{
   ast_channel_lock(tmp);

   /* Stop a running stream if there is one */
   if (tmp->stream) {
      ast_closestream(tmp->stream);
      tmp->stream = NULL;
      if (tmp->oldwriteformat && ast_set_write_format(tmp, tmp->oldwriteformat))
         ast_log(LOG_WARNING, "Unable to restore format back to %d\n", tmp->oldwriteformat);
   }
   /* Stop the video stream too */
   if (tmp->vstream != NULL) {
      ast_closestream(tmp->vstream);
      tmp->vstream = NULL;
   }

   ast_channel_unlock(tmp);

   return 0;
}

int ast_stream_and_wait	(	struct ast_channel *	chan,
		const char *	file,
		const char *	language,
		const char *	digits
	)

Definition at line 1259 of file file.c.

References ast_streamfile(), ast_strlen_zero(), and ast_waitstream().

Referenced by __ast_play_and_record(), app_exec(), ast_record_review(), bridge_playfile(), builtin_atxfer(), builtin_automonitor(), builtin_blindtransfer(), directory_exec(), invent_message(), ivr_dispatch(), leave_voicemail(), park_exec(), play_mailbox_owner(), play_message_callerid(), play_record_review(), and wait_file2().

{
        int res = 0;
        if (!ast_strlen_zero(file)) {
                res =  ast_streamfile(chan, file, language);
                if (!res)
                        res = ast_waitstream(chan, digits);
        }
        return res;
} 

int ast_stream_fastforward	(	struct ast_filestream *	fs,
		off_t	ms
	)

Parameters:

	fs	filestream to act on
	ms	milliseconds to move Returns 0 for success, or -1 for error

Definition at line 797 of file file.c.

References ast_seekstream(), and DEFAULT_SAMPLES_PER_MS.

Referenced by waitstream_core().

{
   return ast_seekstream(fs, ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
}

int ast_stream_rewind	(	struct ast_filestream *	fs,
		off_t	ms
	)

Parameters:

	fs	filestream to act on
	ms	milliseconds to move Returns 0 for success, or -1 for error

Definition at line 802 of file file.c.

References ast_seekstream(), and DEFAULT_SAMPLES_PER_MS.

Referenced by __ast_play_and_record(), handle_recordfile(), and waitstream_core().

{
   return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
}

int ast_streamfile	(	struct ast_channel *	c,
		const char *	filename,
		const char *	preflang
	)

Parameters:

	c	channel to stream the file to
	filename	the name of the file you wish to stream, minus the extension
	preflang	the preferred language you wish to have the file streamed to you in Prepares a channel for the streaming of a file. To start the stream, afterward do a ast_waitstream() on the channel Also, it will stop any existing streams on the channel. Returns 0 on success, or -1 on failure.

Definition at line 885 of file file.c.

References ast_applystream(), AST_FLAG_MASQ_NOSTREAM, ast_getformatname(), ast_getformatname_multiple(), ast_log(), ast_openstream(), ast_openvstream(), ast_playstream(), ast_strdup, ast_test_flag, ast_verbose(),