file.h File Reference

Generic File Format Support. Should be included by clients of the file handling routines. File service providers should instead include mod_format.h. More...

Go to the source code of this file.

Macros
#define	AST_DIGIT_ANY   "0123456789#*ABCD"
#define	AST_DIGIT_ANYNUM   "0123456789"
#define	AST_DIGIT_NONE   ""
#define	ast_file_read_dir(dir_name, on_file, obj)   ast_file_read_dirs(dir_name, on_file, obj, 1)
	Iterate over each file in a given directory.
#define	AST_MAX_FORMATS   10
#define	AST_RESERVED_POINTERS   20
#define	SEEK_FORCECUR   10

Typedefs
typedef int(*	ast_file_on_file) (const char *dir_name, const char *filename, void *obj)
	Callback called for each file found when reading directories.
typedef void()	ast_waitstream_fr_cb(struct ast_channel *chan, long ms, enum ast_waitstream_fr_cb_values val)
	callback used during dtmf controlled file playback to indicate location of playback in a file after rewinding or fastforwarding a file.

Enumerations
enum	ast_waitstream_fr_cb_values { AST_WAITSTREAM_CB_REWIND = 1 , AST_WAITSTREAM_CB_FASTFORWARD , AST_WAITSTREAM_CB_START }

Functions
int	ast_applystream (struct ast_channel *chan, struct ast_filestream *s)
	Applies a open stream to a channel.
int	ast_closestream (struct ast_filestream *f)
	Closes a stream.
int	ast_file_fdtemp (const char *path, char **filename, const char *template_name)
	Create a temporary file located at path.
int	ast_file_init (void)
FILE *	ast_file_mkftemp (char *template_name, mode_t mode)
	same as mkstemp, but return a FILE
int	ast_file_read_dirs (const char *dir_name, ast_file_on_file on_file, void *obj, int max_depth)
	Recursively iterate through files and directories up to max_depth.
int	ast_filecopy (const char *oldname, const char *newname, const char *fmt)
	Copies a file.
int	ast_filedelete (const char *filename, const char *fmt)
	Deletes a file.
int	ast_fileexists (const char *filename, const char *fmt, const char *preflang)
	Checks for the existence of a given file.
int	ast_filerename (const char *oldname, const char *newname, const char *fmt)
	Renames a file.
char *	ast_format_str_reduce (char *fmts)
int	ast_get_extension_for_mime_type (const char *mime_type, char *buffer, size_t capacity)
	Get a suitable filename extension for the given MIME type.
struct ast_format *	ast_get_format_for_file_ext (const char *file_ext)
	Get the ast_format associated with the given file extension.
struct ast_filestream *	ast_openstream (struct ast_channel *chan, const char *filename, const char *preflang)
	Opens stream for use in seeking, playing.
struct ast_filestream *	ast_openstream_full (struct ast_channel *chan, const char *filename, const char *preflang, int asis)
	Opens stream for use in seeking, playing.
struct ast_filestream *	ast_openvstream (struct ast_channel *chan, const char *filename, const char *preflang)
	Opens stream for use in seeking, playing.
int	ast_playstream (struct ast_filestream *s)
	Play a open stream on a channel.
int	ast_ratestream (struct ast_filestream *fs)
	Return the sample rate of the stream's format.
struct ast_filestream *	ast_readfile (const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
	Starts reading from a file.
struct ast_frame *	ast_readframe (struct ast_filestream *s)
	Read a frame from a filestream.
int	ast_seekstream (struct ast_filestream *fs, off_t sample_offset, int whence)
	Seeks into stream.
int	ast_stopstream (struct ast_channel *c)
	Stops a stream.
int	ast_stream_and_wait (struct ast_channel *chan, const char *file, const char *digits)
	stream file until digit If the file name is non-empty, try to play it.
int	ast_stream_fastforward (struct ast_filestream *fs, off_t ms)
	Fast forward stream ms.
int	ast_stream_rewind (struct ast_filestream *fs, off_t ms)
	Rewind stream ms.
int	ast_streamfile (struct ast_channel *c, const char *filename, const char *preflang)
	Streams a file.
off_t	ast_tellstream (struct ast_filestream *fs)
	Tell where we are in a stream.
int	ast_truncstream (struct ast_filestream *fs)
	Trunc stream at current location.
int	ast_waitstream (struct ast_channel *c, const char *breakon)
	Waits for a stream to stop or digit to be pressed.
int	ast_waitstream_exten (struct ast_channel *c, const char *context)
	Waits for a stream to stop or digit matching a valid one digit exten to be pressed.
int	ast_waitstream_fr (struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms)
	Same as waitstream but allows stream to be forwarded or rewound.
int	ast_waitstream_fr_w_cb (struct ast_channel *c, const char *breakon, const char *forward, const char *rewind, int ms, ast_waitstream_fr_cb cb)
	Same as waitstream_fr but allows a callback to be alerted when a user fastforwards or rewinds the file.
int	ast_waitstream_full (struct ast_channel *c, const char *breakon, int audiofd, int monfd)
struct ast_filestream *	ast_writefile (const char *filename, const char *type, const char *comment, int flags, int check, mode_t mode)
	Starts writing a file.
int	ast_writestream (struct ast_filestream *fs, struct ast_frame *f)
	Writes a frame to a stream.

Detailed Description

Generic File Format Support. Should be included by clients of the file handling routines. File service providers should instead include mod_format.h.

Definition in file file.h.

Macro Definition Documentation

AST_DIGIT_ANY

#define AST_DIGIT_ANY   "0123456789#*ABCD"

Definition at line 48 of file file.h.

AST_DIGIT_ANYNUM

#define AST_DIGIT_ANYNUM   "0123456789"

Definition at line 49 of file file.h.

AST_DIGIT_NONE

#define AST_DIGIT_NONE   ""

Convenient for waiting

Definition at line 47 of file file.h.

ast_file_read_dir

#define ast_file_read_dir	(		dir_name,
			on_file,
			obj
	)		ast_file_read_dirs(dir_name, on_file, obj, 1)

Iterate over each file in a given directory.

Parameters

dir_name	the name of the directory to search
on_file	callback called on each file
obj	user data object

Returns

-1

Return values

errno	on failure
0	otherwise

Definition at line 203 of file file.h.

AST_MAX_FORMATS

#define AST_MAX_FORMATS   10

The maximum number of formats we expect to see in a format string

Definition at line 44 of file file.h.

AST_RESERVED_POINTERS

#define AST_RESERVED_POINTERS   20

Definition at line 441 of file file.h.

SEEK_FORCECUR

#define SEEK_FORCECUR   10

Definition at line 51 of file file.h.

Typedef Documentation

ast_file_on_file

typedef int(* ast_file_on_file) (const char *dir_name, const char *filename, void *obj)

Callback called for each file found when reading directories.

Parameters

dir_name	the name of the directory
filename	the name of the file
obj	user data object

Return values

non-zero

to stop reading, otherwise zero to continue

Note

dir_name is not processed by realpath or other functions, symbolic links are not resolved. This ensures dir_name always starts with the exact string originally passed to ast_file_read_dir or ast_file_read_dirs.

Definition at line 180 of file file.h.

ast_waitstream_fr_cb

typedef void() ast_waitstream_fr_cb(struct ast_channel *chan, long ms, enum ast_waitstream_fr_cb_values val)

callback used during dtmf controlled file playback to indicate location of playback in a file after rewinding or fastforwarding a file.

Definition at line 65 of file file.h.

Enumeration Type Documentation

ast_waitstream_fr_cb_values

enum ast_waitstream_fr_cb_values

The type of event associated with a ast_waitstream_fr_cb invocation

Enumerator
AST_WAITSTREAM_CB_REWIND
AST_WAITSTREAM_CB_FASTFORWARD
AST_WAITSTREAM_CB_START

Definition at line 54 of file file.h.

                                 {
    AST_WAITSTREAM_CB_REWIND = 1,
    AST_WAITSTREAM_CB_FASTFORWARD,
    AST_WAITSTREAM_CB_START
};

Function Documentation

ast_applystream()

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

Applies a open stream to a channel.

Parameters

chan	channel to work
s	ast_filestream to apply

Return values

0	on success.
-1	on failure.

Definition at line 1084 of file file.c.

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

References ast_filestream::owner.

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

ast_closestream()

int ast_closestream

(

struct ast_filestream *

f

)

Closes a stream.

Parameters

f	filestream to close Close a playback or recording stream

Return values

0	on success.
-1	on failure.

Definition at line 1138 of file file.c.

{
    /* This used to destroy the filestream, but it now just decrements a refcount.
     * We close the stream in order to quit queuing frames now, because we might
     * change the writeformat, which could result in a subsequent write error, if
     * the format is different. */
    if (f == NULL) {
        return 0;
    }
    filestream_close(f);
    ao2_ref(f, -1);
    return 0;
}

References ao2_ref, ast_filestream::f, filestream_close(), and NULL.

Referenced by __ast_play_and_record(), ast_hangup(), ast_readfile(), ast_stopstream(), ast_writefile(), dictate_exec(), filehelper(), filestream_destructor(), gen_closestream(), handle_cli_file_convert(), handle_recordfile(), local_ast_moh_stop(), mixmonitor_ds_close_fs(), moh_files_next(), moh_files_release(), msg_create_from_file(), record_exec(), and recordthread().

ast_file_fdtemp()

int ast_file_fdtemp	(	const char *	path,
		char **	filename,
		const char *	template_name
	)

Create a temporary file located at path.

Note

The directory containing path will be created if it does not exist

This function assumes path does not end with a '/'

Parameters

path	The directory path to create the file in
filename	Function allocates memory and stores full filename (including path) here
template_name	mkstemp template to use. Must end with XXXXXX.

Note

filename will need to be freed with ast_free if this function succeeds

Return values

-1	on failure

Returns

file descriptor on success

Definition at line 203 of file file.c.

{
    int fd;
 
    if (ast_asprintf(filename, "%s/%s", path, template_name) < 0) {
        ast_log(LOG_ERROR, "Failed to set up temporary file path\n");
        return -1;
    }
 
    ast_mkdir(path, 0644);
 
    if ((fd = mkstemp(*filename)) < 0) {
        ast_log(LOG_NOTICE, "Failed to create temporary file\n");
        ast_free(*filename);
        return -1;
    }
 
    return fd;
}

References ast_asprintf, ast_free, ast_log, ast_mkdir(), LOG_ERROR, and LOG_NOTICE.

ast_file_init()

int ast_file_init

(

void

)

Initialize file stuff

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

Provided by file.c

Definition at line 2093 of file file.c.

{
    STASIS_MESSAGE_TYPE_INIT(ast_format_register_type);
    STASIS_MESSAGE_TYPE_INIT(ast_format_unregister_type);
    ast_cli_register_multiple(cli_file, ARRAY_LEN(cli_file));
    ast_register_cleanup(file_shutdown);
    return 0;
}

ast_file_mkftemp()

FILE * ast_file_mkftemp	(	char *	template_name,
		mode_t	mode
	)

same as mkstemp, but return a FILE

Parameters

template_name	The template for the unique file name to generate. Modified in place to return the file name.
mode	The mode for file permissions

Returns

FILE handle to the temporary file on success or NULL if creation failed

Definition at line 188 of file file.c.

{
    FILE *p = NULL;
    int pfd = mkstemp(template_name);
    chmod(template_name, mode);
    if (pfd > -1) {
        p = fdopen(pfd, "w+");
        if (!p) {
            close(pfd);
            pfd = -1;
        }
    }
    return p;
}

References ast_format_def::close, and NULL.

Referenced by AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), AST_TEST_DEFINE(), sendmail(), and sendpage().

ast_file_read_dirs()

int ast_file_read_dirs	(	const char *	dir_name,
		ast_file_on_file	on_file,
		void *	obj,
		int	max_depth
	)

Recursively iterate through files and directories up to max_depth.

Parameters

dir_name	the name of the directory to search
on_file	callback called on each file
obj	user data object
max_depth	re-curse into sub-directories up to a given maximum (-1 = infinite)

Return values

-1	on failure
errno	on failure
0	otherwise

Definition at line 1301 of file file.c.

{
    int res;
 
    errno = 0;
 
#if !defined(__GLIBC__)
    ast_mutex_lock(&read_dirs_lock);
#endif
 
    res = __ast_file_read_dirs(dir_name, on_file, obj, max_depth);
 
#if !defined(__GLIBC__)
    ast_mutex_unlock(&read_dirs_lock);
#endif
 
    return res;
}

References __ast_file_read_dirs(), ast_mutex_lock, ast_mutex_unlock, errno, and read_dirs_lock.

Referenced by _crypto_load_cert_store(), _crypto_load_crl_store(), ast_media_index_update_for_file(), AST_TEST_DEFINE(), crypto_load(), module_load_helper(), and stasis_app_stored_recording_find_all().

ast_filecopy()

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

Copies a file.

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 1178 of file file.c.

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

References ACTION_COPY, filehelper(), ast_filestream::filename, and ast_filestream::fmt.

Referenced by copy_plain_file(), msg_create_from_file(), stasis_app_stored_recording_copy(), and vm_forwardoptions().

ast_filedelete()

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

Deletes a file.

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 1168 of file file.c.

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

References ACTION_DELETE, filehelper(), ast_filestream::filename, ast_filestream::fmt, and NULL.

Referenced by __ast_play_and_record(), announce_thread(), async_delete_name_rec_task(), conf_free(), conf_rec_name(), conf_run(), confbridge_exec(), dial_exec_full(), handle_cli_file_convert(), leave_voicemail(), leave_voicemail(), mixmonitor_thread(), msg_create_from_file(), play_record_review(), record_exec(), recording_cancel(), setup_privacy_args(), vm_delete(), and vm_delete().

ast_fileexists()

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

Checks for the existence of a given file.

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.

Return values

0	The file does not exist
1	The file does exist.

Definition at line 1156 of file file.c.

{
    char *buf;
    int buflen;
 
    if (preflang == NULL)
        preflang = "";
    buflen = strlen(preflang) + strlen(filename) + 4;   /* room for everything */
    buf = ast_alloca(buflen);
    return fileexists_core(filename, fmt, preflang, buf, buflen, NULL) ? 1 : 0;
}

References ast_alloca, buf, fileexists_core(), ast_filestream::filename, ast_filestream::fmt, and NULL.

Referenced by announce_thread(), app_exec(), ast_get_character_str(), ast_get_digit_str(), ast_get_phonetic_str(), common_exec(), conf_run(), dial_exec_full(), eivr_comm(), forward_message(), get_folder(), invent_message(), invent_message(), leave_voicemail(), leave_voicemail(), meetme_menu_admin_extended(), minivm_delete_exec(), moh_files_next(), msg_create_from_file(), page_exec(), play_file(), play_message(), play_message_by_id_helper(), play_message_callerid(), readexten_exec(), record_exec(), retrydial_exec(), sayname(), setup_privacy_args(), sound_file_exists(), stasis_app_control_record(), vm_intro(), vm_msg_play(), vm_newuser_setup(), vm_options(), and vm_tempgreeting().

ast_filerename()

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

Renames a file.

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

Return values

-1	on failure

Definition at line 1173 of file file.c.

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

References ACTION_RENAME, filehelper(), ast_filestream::filename, and ast_filestream::fmt.

Referenced by __ast_play_and_record(), forward_message(), leave_voicemail(), msg_create_from_file(), play_record_review(), rename_file(), and vm_forwardoptions().

ast_format_str_reduce()

char * ast_format_str_reduce

(

char *

fmts

)

Remove duplicate formats from a format string.

Parameters

fmts	a format string, this string will be modified

Return values

NULL

error

Returns

a pointer to the reduced format string, this is a pointer to fmts

Definition at line 1936 of file file.c.

{
    struct ast_format_def *f;
    struct ast_format_def *fmts_ptr[AST_MAX_FORMATS];
    char *fmts_str[AST_MAX_FORMATS];
    char *stringp, *type;
    char *orig = fmts;
    int i, j, x, first, found = 0;
    int len = strlen(fmts) + 1;
    int res;
 
    if (AST_RWLIST_RDLOCK(&formats)) {
        ast_log(LOG_WARNING, "Unable to lock format list\n");
        return NULL;
    }
 
    stringp = ast_strdupa(fmts);
 
    for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
        AST_RWLIST_TRAVERSE(&formats, f, list) {
            if (exts_compare(f->exts, type)) {
                found = 1;
                break;
            }
        }
 
        fmts_str[x] = type;
        if (found) {
            fmts_ptr[x] = f;
        } else {
            fmts_ptr[x] = NULL;
        }
    }
    AST_RWLIST_UNLOCK(&formats);
 
    first = 1;
    for (i = 0; i < x; i++) {
        /* ignore invalid entries */
        if (!fmts_ptr[i]) {
            ast_log(LOG_WARNING, "ignoring unknown format '%s'\n", fmts_str[i]);
            continue;
        }
 
        /* special handling for the first entry */
        if (first) {
            res = snprintf(fmts, len, "%s", fmts_str[i]);
            fmts += res;
            len -= res;
            first = 0;
            continue;
        }
 
        found = 0;
        for (j = 0; j < i; j++) {
            /* this is a duplicate */
            if (fmts_ptr[j] == fmts_ptr[i]) {
                found = 1;
                break;
            }
        }
 
        if (!found) {
            res = snprintf(fmts, len, "|%s", fmts_str[i]);
            fmts += res;
            len -= res;
        }
    }
 
    if (first) {
        ast_log(LOG_WARNING, "no known formats found in format list (%s)\n", orig);
        return NULL;
    }
 
    return orig;
}

References ast_log, AST_MAX_FORMATS, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_strdupa, ast_format_def::exts, exts_compare, first, len(), ast_format_def::list, LOG_WARNING, NULL, strsep(), and type.

Referenced by actual_load_config(), and AST_TEST_DEFINE().

ast_get_extension_for_mime_type()

int ast_get_extension_for_mime_type	(	const char *	mime_type,
		char *	buffer,
		size_t	capacity
	)

Get a suitable filename extension for the given MIME type.

Parameters

mime_type	The MIME type for which to find extensions
buffer	A pointer to a buffer to receive the extension
capacity	The size of 'buffer' in bytes

Return values

1	if an extension was found for the provided MIME type
0	if the MIME type was not found

Definition at line 2061 of file file.c.

{
    struct ast_format_def *f;
    SCOPED_RDLOCK(lock, &formats.lock);
 
    ast_assert(buffer && capacity);
 
    AST_RWLIST_TRAVERSE(&formats, f, list) {
        if (type_in_list(f->mime_types, mime_type, strcasecmp)) {
            size_t item_len = strcspn(f->exts, "|");
            size_t bytes_written = snprintf(buffer, capacity, ".%.*s", (int) item_len, f->exts);
            if (bytes_written < capacity) {
                /* Only return success if we didn't truncate */
                return 1;
            }
        }
    }
 
    return 0;
}

References ast_assert, AST_RWLIST_TRAVERSE, ast_format_def::exts, ast_format_def::list, lock, formats::lock, ast_format_def::mime_types, SCOPED_RDLOCK, and type_in_list().

Referenced by derive_extension_from_mime_type().

ast_get_format_for_file_ext()

struct ast_format * ast_get_format_for_file_ext

(

const char *

file_ext

)

Get the ast_format associated with the given file extension.

Since

12

Parameters

file_ext

The file extension for which to find the format

Return values

NULL	if not found

Returns

A pointer to the ast_format associated with this file extension

Definition at line 2048 of file file.c.

{
    struct ast_format_def *f;
    SCOPED_RDLOCK(lock, &formats.lock);
    AST_RWLIST_TRAVERSE(&formats, f, list) {
        if (exts_compare(f->exts, file_ext)) {
            return f->format;
        }
    }
 
    return NULL;
}

References AST_RWLIST_TRAVERSE, ast_format_def::exts, exts_compare, ast_format_def::format, ast_format_def::list, lock, formats::lock, NULL, and SCOPED_RDLOCK.

Referenced by ast_ari_bridges_record(), ast_ari_channels_record(), ast_ari_recordings_get_stored_file(), file_extension_from_string(), is_recording(), and process_media_file().

ast_openstream()

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

Opens stream for use in seeking, playing.

Parameters

chan	channel to work with
filename	to use
preflang	prefered language to use

Returns

a ast_filestream pointer if it opens the file.

Return values

NULL

on error.

Definition at line 864 of file file.c.

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

References ast_filestream::filename, and openstream_internal().

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

ast_openstream_full()

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

Opens stream for use in seeking, playing.

Parameters

chan	channel to work with
filename	to use
preflang	prefered language to use
asis	if set, don't clear generators

Return values

a	ast_filestream pointer if it opens the file.
NULL	on error.

Definition at line 869 of file file.c.

{
    return openstream_internal(chan, filename, preflang, asis, 0);
}

References ast_filestream::filename, and openstream_internal().

Referenced by gen_nextfile(), and moh_files_next().

ast_openvstream()

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

Opens stream for use in seeking, playing.

Parameters

chan	channel to work with
filename	to use
preflang	prefered language to use

Returns

a ast_filestream pointer if it opens the file.

Return values

NULL

on error.

Definition at line 875 of file file.c.

{
    /* As above, but for video. But here we don't have translators
     * so we must enforce a format.
     */
    struct ast_format_cap *nativeformats, *tmp_cap;
    char *buf;
    int buflen;
    int i, fd;
 
    if (preflang == NULL) {
        preflang = "";
    }
    buflen = strlen(preflang) + strlen(filename) + 4;
    buf = ast_alloca(buflen);
 
    ast_channel_lock(chan);
    nativeformats = ao2_bump(ast_channel_nativeformats(chan));
    ast_channel_unlock(chan);
 
    /* is the channel capable of video without translation ?*/
    if (!ast_format_cap_has_type(nativeformats, AST_MEDIA_TYPE_VIDEO)) {
        ao2_cleanup(nativeformats);
        return NULL;
    }
    if (!(tmp_cap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT))) {
        ao2_cleanup(nativeformats);
        return NULL;
    }
    /* Video is supported, so see what video formats exist for this file */
    if (!fileexists_core(filename, NULL, preflang, buf, buflen, tmp_cap)) {
        ao2_ref(tmp_cap, -1);
        ao2_cleanup(nativeformats);
        return NULL;
    }
 
    /* iterate over file formats and pick the first one compatible with the channel's native formats */
    for (i = 0; i < ast_format_cap_count(tmp_cap); ++i) {
        struct ast_format *format = ast_format_cap_get_format(tmp_cap, i);
 
        if ((ast_format_get_type(format) != AST_MEDIA_TYPE_VIDEO) ||
            !ast_format_cap_iscompatible(nativeformats, tmp_cap)) {
            ao2_ref(format, -1);
            continue;
        }
 
        fd = filehelper(buf, chan, ast_format_get_name(format), ACTION_OPEN);
        if (fd >= 0) {
            ao2_ref(format, -1);
            ao2_ref(tmp_cap, -1);
            ao2_cleanup(nativeformats);
            return ast_channel_vstream(chan);
        }
        ast_log(LOG_WARNING, "File %s has video but couldn't be opened\n", filename);
        ao2_ref(format, -1);
    }
    ao2_ref(tmp_cap, -1);
    ao2_cleanup(nativeformats);
 
    return NULL;
}

References ACTION_OPEN, ao2_bump, ao2_cleanup, ao2_ref, ast_alloca, ast_channel_lock, ast_channel_nativeformats(), ast_channel_unlock, ast_channel_vstream(), ast_format_cap_alloc, ast_format_cap_count(), AST_FORMAT_CAP_FLAG_DEFAULT, ast_format_cap_get_format(), ast_format_cap_has_type(), ast_format_cap_iscompatible(), ast_format_get_name(), ast_format_get_type(), ast_log, AST_MEDIA_TYPE_VIDEO, buf, fileexists_core(), filehelper(), LOG_WARNING, and NULL.

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

ast_playstream()

int ast_playstream

(

struct ast_filestream *

s

)

Play a open stream on a channel.

Parameters

s	filestream to play

Return values

0	on success.
-1	on failure.

Definition at line 1090 of file file.c.

{
    enum fsread_res res;
 
    if (ast_format_get_type(s->fmt->format) == AST_MEDIA_TYPE_AUDIO)
        res = ast_readaudio_callback(s);
    else
        res = ast_readvideo_callback(s);
 
    return (res == FSREAD_FAILURE) ? -1 : 0;
}

References ast_format_get_type(), AST_MEDIA_TYPE_AUDIO, ast_readaudio_callback(), ast_readvideo_callback(), ast_filestream::fmt, ast_format_def::format, and FSREAD_FAILURE.

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

ast_ratestream()

int ast_ratestream

(

struct ast_filestream *

fs

)

Return the sample rate of the stream's format.

Parameters

fs	fs to act on

Returns

sample rate in Hz

Definition at line 1117 of file file.c.

{
    return ast_format_get_sample_rate(fs->fmt->format);
}

References ast_format_get_sample_rate(), ast_filestream::fmt, and ast_format_def::format.

Referenced by msg_create_from_file().

ast_readfile()

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

Starts reading from a file.

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.

Return values

NULL	on failure.

Definition at line 1413 of file file.c.

{
    FILE *bfile;
    struct ast_format_def *f;
    struct ast_filestream *fs = NULL;
    char *fn;
    int format_found = 0;
 
    AST_RWLIST_RDLOCK(&formats);
 
    AST_RWLIST_TRAVERSE(&formats, f, list) {
        fs = NULL;
        if (!exts_compare(f->exts, type))
            continue;
        else
            format_found = 1;
 
        fn = build_filename(filename, type);
        if (!fn) {
            continue;
        }
        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_closestream(fs);
            }
            fs = NULL;
            bfile = NULL;
            ast_free(fn);
            break;
        }
        /* found it */
        fs->trans = NULL;
        fs->fmt = f;
        fs->flags = flags;
        fs->mode = mode;
        fs->filename = ast_strdup(filename);
        fs->vfs = NULL;
        ast_free(fn);
        break;
    }
 
    AST_RWLIST_UNLOCK(&formats);
    if (!format_found)
        ast_log(LOG_WARNING, "No such format '%s'\n", type);
 
    return fs;
}

References ast_closestream(), ast_free, ast_log, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_strdup, build_filename(), errno, exts_compare, ast_filestream::f, ast_filestream::filename, ast_filestream::flags, ast_filestream::fmt, get_filestream(), LOG_WARNING, ast_filestream::mode, NULL, open_wrapper(), ast_filestream::trans, type, and ast_filestream::vfs.

Referenced by __ast_play_and_record(), handle_cli_file_convert(), and msg_create_from_file().

ast_readframe()

struct ast_frame * ast_readframe

(

struct ast_filestream *

s

)

Read a frame from a filestream.

Parameters

s	ast_filestream to act on

Returns

a frame.

Return values

NULL	if read failed.

Definition at line 963 of file file.c.

{
    int whennext = 0;
 
    return read_frame(s, &whennext);
}

References read_frame().

Referenced by __ast_play_and_record(), dictate_exec(), gen_readframe(), handle_cli_file_convert(), and moh_files_readframe().

ast_seekstream()

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

Seeks into stream.

Parameters

fs	ast_filestream to perform seek on
sample_offset	numbers of samples to seek
whence	SEEK_SET, SEEK_CUR, SEEK_END

Return values

0	on success.
-1	on failure.

Definition at line 1102 of file file.c.

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

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

Referenced by ast_stream_fastforward(), ast_stream_rewind(), ast_streamfile(), control_streamfile(), dictate_exec(), handle_getoption(), handle_recordfile(), handle_streamfile(), moh_files_next(), msg_create_from_file(), and speech_streamfile().

ast_stopstream()

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.

Examples

app_skel.c.

Definition at line 223 of file file.c.

{
    struct ast_json * cel_event = NULL;
 
    ast_channel_lock(tmp);
 
    /* Stop a running stream if there is one */
    if (ast_channel_stream(tmp)) {
        ast_closestream(ast_channel_stream(tmp));
        ast_channel_stream_set(tmp, NULL);
 
        cel_event = ast_json_pack("{ s: s }", "event", "FILE_STREAM_END");
        if (cel_event) {
            ast_cel_publish_event(tmp, AST_CEL_STREAM_END, cel_event);
        }
 
        if (ast_channel_oldwriteformat(tmp) && ast_set_write_format(tmp, ast_channel_oldwriteformat(tmp)))
            ast_log(LOG_WARNING, "Unable to restore format back to %s\n", ast_format_get_name(ast_channel_oldwriteformat(tmp)));
    }
    ast_json_unref(cel_event);
 
    /* Stop the video stream too */
    if (ast_channel_vstream(tmp) != NULL) {
        ast_closestream(ast_channel_vstream(tmp));
        ast_channel_vstream_set(tmp, NULL);
    }
 
    ast_channel_unlock(tmp);
 
    return 0;
}

References ast_cel_publish_event(), AST_CEL_STREAM_END, ast_channel_lock, ast_channel_oldwriteformat(), ast_channel_stream(), ast_channel_stream_set(), ast_channel_unlock, ast_channel_vstream(), ast_channel_vstream_set(), ast_closestream(), ast_format_get_name(), ast_json_pack(), ast_json_unref(), ast_log, ast_set_write_format(), LOG_WARNING, and NULL.

Referenced by action_playback_and_continue(), adsi_transmit_message_full(), agent_alert(), announce_to_dial(), ast_play_and_wait(), ast_readstring_full(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_enumeration_full_dr(), ast_say_enumeration_full_en(), ast_say_enumeration_full_he(), ast_say_enumeration_full_is(), ast_say_enumeration_full_ps(), ast_say_enumeration_full_vi(), ast_say_number_full_cs(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_dr(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_gr(), ast_say_number_full_he(), ast_say_number_full_hu(), ast_say_number_full_is(), ast_say_number_full_it(), ast_say_number_full_ja(), ast_say_number_full_ka(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_ps(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), ast_say_number_full_th(), ast_say_number_full_ur(), ast_say_number_full_vi(), ast_say_number_full_zh(), ast_stream_and_wait(), background_detect_exec(), conf_exec(), conf_run(), control_streamfile(), dial_exec_full(), directory_exec(), grab_transfer(), handle_getoption(), handle_speechrecognize(), handle_streamfile(), isAnsweringMachine(), ivr_dispatch(), leave_voicemail(), meetme_menu_admin(), meetme_menu_admin_extended(), minivm_greet_exec(), mp3_exec(), openstream_internal(), pbx_builtin_background(), pl_odtworz_plik(), play_file(), play_file(), play_files_helper(), play_mailbox_owner(), playback_exec(), queue_exec(), read_exec(), readexten_exec(), recordthread(), s_streamwait3(), say_filenames(), select_item_seq(), send_waveform_to_channel(), speech_background(), vm_authenticate(), vm_execmain(), wait_for_winner(), waitstream_core(), and zapateller_exec().

ast_stream_and_wait()

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

stream file until digit If the file name is non-empty, try to play it.

Note

If digits == "" then we can simply check for non-zero.

If a failure is encountered, the stream will be closed before returning.

Return values

0	if success.
-1	if error.
digit	if interrupted by a digit.

Examples

app_skel.c.

Definition at line 1920 of file file.c.

{
    int res = 0;
    if (!ast_strlen_zero(file)) {
        res = ast_streamfile(chan, file, ast_channel_language(chan));
        if (!res) {
            res = ast_waitstream(chan, digits);
        }
    }
    if (res == -1) {
        ast_stopstream(chan);
    }
 
    return res;
}

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

Referenced by __ast_play_and_record(), action_playback(), action_toggle_mute_participants(), agent_alert(), agent_login_exec(), announce_user_count(), app_exec(), ast_bridge_channel_playfile(), ast_pickup_call(), ast_record_review(), bridge_features_duration_callback(), confbridge_exec(), directory_exec(), forward_message(), grab_transfer(), invent_message(), ivr_dispatch(), join_conference_bridge(), leave_voicemail(), limits_interval_playback(), mixmonitor_thread(), park_app_exec(), parked_call_app_exec(), play_file(), play_files_helper(), play_mailbox_owner(), play_message_callerid(), play_prompt_to_user(), play_record_review(), play_record_review(), playback_common(), record_exec(), sayname(), select_item_seq(), setup_mixmonitor_ds(), stream_failsound(), vm_forwardoptions(), vmsayname_exec(), and wait_file2().

ast_stream_fastforward()

int ast_stream_fastforward	(	struct ast_filestream *	fs,
		off_t	ms
	)

Fast forward stream ms.

Parameters

fs	filestream to act on
ms	milliseconds to move

Return values

0	on success.
-1	on failure.

Definition at line 1122 of file file.c.

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

References ast_seekstream(), and DEFAULT_SAMPLES_PER_MS.

Referenced by waitstream_control().

ast_stream_rewind()

int ast_stream_rewind	(	struct ast_filestream *	fs,
		off_t	ms
	)

Rewind stream ms.

Parameters

fs	filestream to act on
ms	milliseconds to move

Return values

0	on success.
-1	on failure.

Definition at line 1127 of file file.c.

{
    off_t offset = ast_tellstream(fs);
    if (ms * DEFAULT_SAMPLES_PER_MS > offset) {
        /* Don't even bother asking the file format to seek to a negative offset... */
        ast_debug(1, "Restarting, rather than seeking to negative offset %ld\n", (long) (offset - (ms * DEFAULT_SAMPLES_PER_MS)));
        return ast_seekstream(fs, 0, SEEK_SET);
    }
    return ast_seekstream(fs, -ms * DEFAULT_SAMPLES_PER_MS, SEEK_CUR);
}

References ast_debug, ast_seekstream(), ast_tellstream(), and DEFAULT_SAMPLES_PER_MS.

Referenced by __ast_play_and_record(), handle_recordfile(), record_exec(), and waitstream_control().

ast_streamfile()

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

Streams a file.

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.

Return values

0	on success.
-1	on failure.

Definition at line 1320 of file file.c.

{
    struct ast_json * cel_event = NULL;
    struct ast_filestream *fs = NULL;
    struct ast_filestream *vfs = NULL;
    off_t pos;
    int seekattempt;
    int res;
    char custom_filename[256];
    char *tmp_filename;
 
    /* If file with the same name exists in /var/lib/asterisk/sounds/custom directory, use that file.
     * Otherwise, use the original file*/
 
    if (ast_opt_sounds_search_custom && !is_absolute_path(filename)) {
        memset(custom_filename, 0, sizeof(custom_filename));
        snprintf(custom_filename, sizeof(custom_filename), "custom/%s", filename);
        fs = openstream_internal(chan, custom_filename, preflang, 0, 1); /* open stream, do not warn for missing files */
        if (fs) {
            tmp_filename = custom_filename;
            ast_debug(3, "Found file %s in custom directory\n", filename);
        }
    }
 
    if (!fs) {
        fs = ast_openstream(chan, filename, preflang);
        if (!fs) {
            struct ast_str *codec_buf = ast_str_alloca(AST_FORMAT_CAP_NAMES_LEN);
            ast_channel_lock(chan);
            ast_log(LOG_WARNING, "Unable to open %s (format %s)\n",
                    filename, ast_format_cap_get_names(ast_channel_nativeformats(chan), &codec_buf));
            ast_channel_unlock(chan);
            return -1;
        }
        tmp_filename = (char *)filename;
    }
 
    /* check to see if there is any data present (not a zero length file),
     * done this way because there is no where for ast_openstream_full to
     * return the file had no data. */
    pos = ftello(fs->f);
    seekattempt = fseeko(fs->f, -1, SEEK_END);
    if (seekattempt) {
        if (errno == EINVAL) {
            /* Zero-length file, as opposed to a pipe */
            return 0;
        } else {
            ast_seekstream(fs, 0, SEEK_SET);
        }
    } else {
        fseeko(fs->f, pos, SEEK_SET);
    }
 
    vfs = ast_openvstream(chan, tmp_filename, preflang);
    if (vfs) {
        ast_debug(1, "Ooh, found a video stream, too, format %s\n", ast_format_get_name(vfs->fmt->format));
    }
 
    if (ast_test_flag(ast_channel_flags(chan), AST_FLAG_MASQ_NOSTREAM))
        fs->orig_chan_name = ast_strdup(ast_channel_name(chan));
    if (ast_applystream(chan, fs))
        return -1;
    if (vfs && ast_applystream(chan, vfs))
        return -1;
    ast_test_suite_event_notify("PLAYBACK", "Message: %s\r\nChannel: %s", tmp_filename, ast_channel_name(chan));
    res = ast_playstream(fs);
    if (!res && vfs)
        res = ast_playstream(vfs);
 
    cel_event = ast_json_pack("{ s: s, s: {s: s, s: s, s: s}}",
        "event", "FILE_STREAM_BEGIN",
        "extra",
            "sound", tmp_filename,
            "format", ast_format_get_name(ast_channel_writeformat(chan)),
            "language", preflang ? preflang : "default"
    );
    if (cel_event) {
        ast_cel_publish_event(chan, AST_CEL_STREAM_BEGIN, cel_event);
    } else {
        ast_log(LOG_WARNING, "Unable to build extradata for sound file STREAM_BEGIN event on channel %s", ast_channel_name(chan));
    }
    ast_json_unref(cel_event);
 
    if (VERBOSITY_ATLEAST(3)) {
        ast_channel_lock(chan);
        ast_verb(3, "<%s> Playing '%s.%s' (language '%s')\n", ast_channel_name(chan), tmp_filename, ast_format_get_name(ast_channel_writeformat(chan)), preflang ? preflang : "default");
        ast_channel_unlock(chan);
    }
 
    return res;
}

References ast_applystream(), ast_cel_publish_event(), AST_CEL_STREAM_BEGIN, ast_channel_flags(), ast_channel_lock, ast_channel_name(), ast_channel_nativeformats(), ast_channel_unlock, ast_channel_writeformat(), ast_debug, AST_FLAG_MASQ_NOSTREAM, ast_format_cap_get_names(), AST_FORMAT_CAP_NAMES_LEN, ast_format_get_name(), ast_json_pack(), ast_json_unref(), ast_log, ast_openstream(), ast_openvstream(), ast_opt_sounds_search_custom, ast_playstream(), ast_seekstream(), ast_str_alloca, ast_strdup, ast_test_flag, ast_test_suite_event_notify, ast_verb, errno, ast_filestream::f, ast_filestream::filename, ast_filestream::fmt, ast_format_def::format, is_absolute_path(), LOG_WARNING, NULL, openstream_internal(), ast_filestream::orig_chan_name, VERBOSITY_ATLEAST, and ast_filestream::vfs.

Referenced by __analog_ss_thread(), action_playback_and_continue(), analog_ss_thread(), announce_thread(), announce_to_dial(), app_exec(), ast_app_getdata_full(), ast_app_getdata_terminator(), ast_play_and_wait(), ast_say_date_da(), ast_say_date_de(), ast_say_date_en(), ast_say_date_fr(), ast_say_date_gr(), ast_say_date_he(), ast_say_date_hu(), ast_say_date_is(), ast_say_date_ja(), ast_say_date_ka(), ast_say_date_nl(), ast_say_date_th(), ast_say_date_with_format_gr(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_he(), ast_say_datetime_from_now_ka(), ast_say_datetime_gr(), ast_say_datetime_he(), ast_say_datetime_ja(), ast_say_datetime_nl(), ast_say_datetime_pt(), ast_say_datetime_th(), ast_say_datetime_zh(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_enumeration_full_dr(), ast_say_enumeration_full_en(), ast_say_enumeration_full_he(), ast_say_enumeration_full_is(), ast_say_enumeration_full_ps(), ast_say_enumeration_full_vi(), ast_say_number_full_cs(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_dr(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_gr(), ast_say_number_full_he(), ast_say_number_full_hu(), ast_say_number_full_is(), ast_say_number_full_it(), ast_say_number_full_ja(), ast_say_number_full_ka(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_ps(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), ast_say_number_full_th(), ast_say_number_full_ur(), ast_say_number_full_vi(), ast_say_number_full_zh(), ast_say_time_de(), ast_say_time_en(), ast_say_time_fr(), ast_say_time_gr(), ast_say_time_hu(), ast_say_time_ja(), ast_say_time_ka(), ast_say_time_nl(), ast_say_time_zh(), ast_stream_and_wait(), auth_exec(), background_detect_exec(), common_exec(), conf_exec(), conf_get_pin(), conf_run(), control_streamfile(), dial_exec_full(), do_directory(), find_conf_realtime(), forward_message(), gr_say_number_female(), handle_recordfile(), invent_message(), isAnsweringMachine(), leave_voicemail(), leave_voicemail(), meetme_menu_admin(), meetme_menu_admin_extended(), meetme_menu_normal(), minivm_greet_exec(), page_exec(), pbx_builtin_background(), pl_odtworz_plik(), play_and_wait(), play_file(), play_record_review(), playback_exec(), privacy_exec(), readexten_exec(), retrydial_exec(), s_streamwait3(), say_filenames(), select_item_menu(), setup_privacy_args(), vm_authenticate(), wait_file(), wait_for_answer(), and wait_for_winner().

ast_tellstream()

off_t ast_tellstream

(

struct ast_filestream *

fs

)

Tell where we are in a stream.

Parameters

fs	fs to act on

Returns

a long as a sample offset into stream

Definition at line 1112 of file file.c.

{
    return fs->fmt->tell(fs);
}

References ast_filestream::fmt, and ast_format_def::tell.

Referenced by __ast_play_and_record(), ast_stream_rewind(), control_streamfile(), handle_getoption(), handle_recordfile(), handle_speechrecognize(), handle_streamfile(), moh_files_next(), msg_create_from_file(), waitstream_control(), and waitstream_core().

ast_truncstream()

int ast_truncstream

(

struct ast_filestream *

fs

)

Trunc stream at current location.

Parameters

fs	filestream to act on

Return values

0	on success.
-1	on failure.

Definition at line 1107 of file file.c.

{
    return fs->fmt->trunc(fs);
}

References ast_filestream::fmt, and ast_format_def::trunc.

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

ast_waitstream()

int ast_waitstream	(	struct ast_channel *	c,
		const char *	breakon
	)

Waits for a stream to stop or digit to be pressed.

Parameters

c	channel to waitstream on
breakon	string of DTMF digits to break upon Begins playback of a stream... Wait for a stream to stop or for any one of a given digit to arrive,

Return values

0	if the stream finishes
character	if it was interrupted by the channel.
-1	on error

Definition at line 1882 of file file.c.

{
    int res;
 
    res = waitstream_core(c, breakon, NULL, NULL, 0, -1, -1, NULL, NULL /* no callback */);
 
    return sanitize_waitstream_return(res);
}

References c, NULL, sanitize_waitstream_return(), and waitstream_core().

Referenced by __analog_ss_thread(), action_playback_and_continue(), analog_ss_thread(), announce_thread(), announce_to_dial(), app_exec(), ast_play_and_wait(), ast_say_date_da(), ast_say_date_de(), ast_say_date_en(), ast_say_date_fr(), ast_say_date_gr(), ast_say_date_he(), ast_say_date_hu(), ast_say_date_is(), ast_say_date_ja(), ast_say_date_ka(), ast_say_date_nl(), ast_say_date_th(), ast_say_date_with_format_gr(), ast_say_datetime_en(), ast_say_datetime_fr(), ast_say_datetime_from_now_en(), ast_say_datetime_from_now_fr(), ast_say_datetime_from_now_he(), ast_say_datetime_from_now_ka(), ast_say_datetime_gr(), ast_say_datetime_he(), ast_say_datetime_ja(), ast_say_datetime_nl(), ast_say_datetime_pt(), ast_say_datetime_th(), ast_say_datetime_zh(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_enumeration_full_dr(), ast_say_enumeration_full_en(), ast_say_enumeration_full_he(), ast_say_enumeration_full_is(), ast_say_enumeration_full_ps(), ast_say_enumeration_full_vi(), ast_say_number_full_cs(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_dr(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_gr(), ast_say_number_full_he(), ast_say_number_full_hu(), ast_say_number_full_is(), ast_say_number_full_it(), ast_say_number_full_ja(), ast_say_number_full_ka(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_ps(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), ast_say_number_full_th(), ast_say_number_full_ur(), ast_say_number_full_vi(), ast_say_number_full_zh(), ast_say_time_de(), ast_say_time_en(), ast_say_time_fr(), ast_say_time_gr(), ast_say_time_he(), ast_say_time_hu(), ast_say_time_ja(), ast_say_time_ka(), ast_say_time_nl(), ast_say_time_zh(), ast_stream_and_wait(), auth_exec(), common_exec(), conf_exec(), conf_get_pin(), conf_run(), directory_exec(), find_conf_realtime(), gr_say_number_female(), handle_recordfile(), invent_message(), leave_voicemail(), leave_voicemail(), meetme_menu_admin(), meetme_menu_admin_extended(), meetme_menu_normal(), minivm_greet_exec(), page_exec(), pbx_builtin_background(), pl_odtworz_plik(), play_and_wait(), play_file(), play_record_review(), playback_exec(), privacy_exec(), retrydial_exec(), s_streamwait3(), say_filenames(), select_item_menu(), setup_privacy_args(), vm_authenticate(), and wait_file().

ast_waitstream_exten()

int ast_waitstream_exten	(	struct ast_channel *	c,
		const char *	context
	)

Waits for a stream to stop or digit matching a valid one digit exten to be pressed.

Parameters

c	channel to waitstream on
context	string of context to match digits to break upon Begins playback of a stream... Wait for a stream to stop or for any one of a valid extension digit to arrive,

Return values

0	if the stream finishes.
character	if it was interrupted.
-1	on error.

Definition at line 1901 of file file.c.

{
    int res;
 
    /* Waitstream, with return in the case of a valid 1 digit extension */
    /* in the current or specified context being pressed */
    if (!context)
        context = ast_channel_context(c);
    res = waitstream_core(c, NULL, NULL, NULL, 0,
        -1, -1, context, NULL /* no callback */);
 
    return sanitize_waitstream_return(res);
}

References ast_channel_context(), c, NULL, sanitize_waitstream_return(), and waitstream_core().

Referenced by pbx_builtin_background().

ast_waitstream_fr()

int ast_waitstream_fr	(	struct ast_channel *	c,
		const char *	breakon,
		const char *	forward,
		const char *	rewind,
		int	ms
	)

Same as waitstream but allows stream to be forwarded or rewound.

Parameters

c	channel to waitstream on
breakon	string of DTMF digits to break upon
forward	DTMF digit to fast forward upon
rewind	DTMF digit to rewind upon
ms	How many miliseconds to skip forward/back Begins playback of a stream... Wait for a stream to stop or for any one of a given digit to arrive,

Return values

0	if the stream finishes.
character	if it was interrupted,

Returns

the value of the control frame if it was interrupted by some other party,

Return values

-1

on error.

Definition at line 1851 of file file.c.

{
    return waitstream_core(c, breakon, forward, reverse, ms,
        -1 /* no audiofd */, -1 /* no cmdfd */, NULL /* no context */, NULL /* no callback */);
}

References c, NULL, and waitstream_core().

Referenced by control_streamfile().

ast_waitstream_fr_w_cb()

int ast_waitstream_fr_w_cb	(	struct ast_channel *	c,
		const char *	breakon,
		const char *	forward,
		const char *	rewind,
		int	ms,
		ast_waitstream_fr_cb	cb
	)

Same as waitstream_fr but allows a callback to be alerted when a user fastforwards or rewinds the file.

Parameters

c	channel to waitstream on
breakon	string of DTMF digits to break upon
forward	DTMF digit to fast forward upon
rewind	DTMF digit to rewind upon
ms	How many milliseconds to skip forward/back
cb	to call when rewind or fastforward occurs. Begins playback of a stream... Wait for a stream to stop or for any one of a given digit to arrive,

Return values

0	if the stream finishes.
character	if it was interrupted,

Returns

the value of the control frame if it was interrupted by some other party,

Return values

-1

on error.

Definition at line 1840 of file file.c.

{
    return waitstream_core(c, breakon, forward, reverse, ms,
        -1 /* no audiofd */, -1 /* no cmdfd */, NULL /* no context */, cb);
}

References c, NULL, and waitstream_core().

Referenced by control_streamfile().

ast_waitstream_full()

int ast_waitstream_full	(	struct ast_channel *	c,
		const char *	breakon,
		int	audiofd,
		int	monfd
	)

Same as waitstream, but with audio output to fd and monitored fd checking.

Return values

1	if monfd is ready for reading

Definition at line 1891 of file file.c.

{
    int res;
 
    res = waitstream_core(c, breakon, NULL, NULL, 0,
        audiofd, cmdfd, NULL /* no context */, NULL /* no callback */);
 
    return sanitize_waitstream_return(res);
}

References c, NULL, sanitize_waitstream_return(), and waitstream_core().

Referenced by ast_readstring_full(), ast_say_enumeration_full_da(), ast_say_enumeration_full_de(), ast_say_enumeration_full_dr(), ast_say_enumeration_full_en(), ast_say_enumeration_full_he(), ast_say_enumeration_full_is(), ast_say_enumeration_full_ps(), ast_say_enumeration_full_vi(), ast_say_number_full_cs(), ast_say_number_full_da(), ast_say_number_full_de(), ast_say_number_full_dr(), ast_say_number_full_en_GB(), ast_say_number_full_es(), ast_say_number_full_fr(), ast_say_number_full_gr(), ast_say_number_full_he(), ast_say_number_full_hu(), ast_say_number_full_is(), ast_say_number_full_it(), ast_say_number_full_ja(), ast_say_number_full_ka(), ast_say_number_full_nl(), ast_say_number_full_no(), ast_say_number_full_ps(), ast_say_number_full_pt(), ast_say_number_full_ru(), ast_say_number_full_se(), ast_say_number_full_th(), ast_say_number_full_ur(), ast_say_number_full_vi(), ast_say_number_full_zh(), handle_getoption(), handle_streamfile(), pl_odtworz_plik(), s_streamwait3(), and say_filenames().

ast_writefile()

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

Starts writing a file.

Parameters

filename	the name of the file to write to
type	format of file you wish to write out to
comment	comment to go with
flags	output file flags
check	(unimplemented, hence negligible)
mode	Open mode Create an outgoing file stream. oflags are flags for the open() command, and if check is non-zero, then it will not write 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.

Return values

NULL	on failure.

Definition at line 1465 of file file.c.

{
    int fd, myflags = 0;
    /* compiler claims this variable can be used before initialization... */
    FILE *bfile = NULL;
    struct ast_format_def *f;
    struct ast_filestream *fs = NULL;
    char *buf = NULL;
    size_t size = 0;
    int format_found = 0;
 
    AST_RWLIST_RDLOCK(&formats);
 
    /* set the O_TRUNC flag if and only if there is no O_APPEND specified */
    /* We really can't use O_APPEND as it will break WAV header updates */
    if (flags & O_APPEND) {
        flags &= ~O_APPEND;
    } else {
        myflags = O_TRUNC;
    }
 
    myflags |= O_WRONLY | O_CREAT;
 
    /* XXX need to fix this - we should just do the fopen,
     * not open followed by fdopen()
     */
    AST_RWLIST_TRAVERSE(&formats, f, list) {
        char *fn, *orig_fn = NULL;
        if (fs)
            break;
 
        if (!exts_compare(f->exts, type))
            continue;
        else
            format_found = 1;
 
        fn = build_filename(filename, type);
        if (!fn) {
            continue;
        }
        fd = open(fn, flags | myflags, mode);
        if (fd > -1) {
            /* fdopen() the resulting file stream */
            bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
            if (!bfile) {
                ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
                close(fd);
                fd = -1;
            }
        }
 
        if (ast_opt_cache_record_files && (fd > -1)) {
            char *c;
 
            fclose(bfile);  /* this also closes fd */
            /*
              We touch orig_fn just as a place-holder so other things (like vmail) see the file is there.
              What we are really doing is writing to record_cache_dir until we are done then we will mv the file into place.
            */
            orig_fn = ast_strdup(fn);
            for (c = fn; *c; c++)
                if (*c == '/')
                    *c = '_';
 
            size = strlen(fn) + strlen(record_cache_dir) + 2;
            buf = ast_malloc(size);
            strcpy(buf, record_cache_dir);
            strcat(buf, "/");
            strcat(buf, fn);
            ast_free(fn);
            fn = buf;
            fd = open(fn, flags | myflags, mode);
            if (fd > -1) {
                /* fdopen() the resulting file stream */
                bfile = fdopen(fd, ((flags | myflags) & O_RDWR) ? "w+" : "w");
                if (!bfile) {
                    ast_log(LOG_WARNING, "Whoa, fdopen failed: %s!\n", strerror(errno));
                    close(fd);
                    fd = -1;
                }
            }
        }
        if (fd > -1) {
            errno = 0;
            fs = get_filestream(f, bfile);
            if (fs) {
                if ((fs->write_buffer = ast_malloc(32768))) {
                    setvbuf(fs->f, fs->write_buffer, _IOFBF, 32768);
                }
            }
            if (!fs || rewrite_wrapper(fs, comment)) {
                ast_log(LOG_WARNING, "Unable to rewrite %s\n", fn);
                close(fd);
                if (orig_fn) {
                    unlink(fn);
                    unlink(orig_fn);
                    ast_free(orig_fn);
                }
                if (fs) {
                    ast_closestream(fs);
                    fs = NULL;
                }
                /*
                 * 'fn' was has either been allocated from build_filename, or that was freed
                 * and now 'fn' points to memory allocated for 'buf'. Either way the memory
                 * now needs to be released.
                 */
                ast_free(fn);
                continue;
            }
            fs->trans = NULL;
            fs->fmt = f;
            fs->flags = flags;
            fs->mode = mode;
            if (orig_fn) {
                fs->realfilename = orig_fn;
                fs->filename = fn;
                /*
                 * The above now manages the memory allocated for 'orig_fn' and 'fn', so
                 * set them to NULL, so they don't get released at the end of the loop.
                 */
                orig_fn = NULL;
                fn = NULL;
            } else {
                fs->realfilename = NULL;
                fs->filename = ast_strdup(filename);
            }
            fs->vfs = NULL;
            /* If truncated, we'll be at the beginning; if not truncated, then append */
            f->seek(fs, 0, SEEK_END);
        } else if (errno != EEXIST) {
            ast_log(LOG_WARNING, "Unable to open file %s: %s\n", fn, strerror(errno));
            if (orig_fn)
                unlink(orig_fn);
        }
        /* Free 'fn', or if 'fn' points to 'buf' then free 'buf' */
        ast_free(fn);
        ast_free(orig_fn);
    }
 
    AST_RWLIST_UNLOCK(&formats);
 
    if (!format_found)
        ast_log(LOG_WARNING, "No such format '%s'\n", type);
 
    return fs;
}

References ast_closestream(), ast_free, ast_log, ast_malloc, ast_opt_cache_record_files, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_strdup, buf, build_filename(), c, comment, errno, exts_compare, ast_filestream::f, ast_filestream::filename, ast_filestream::flags, ast_filestream::fmt, get_filestream(), LOG_WARNING, ast_filestream::mode, NULL, ast_filestream::realfilename, record_cache_dir, rewrite_wrapper(), ast_filestream::trans, type, ast_filestream::vfs, and ast_filestream::write_buffer.

Referenced by __ast_play_and_record(), ast_writestream(), dictate_exec(), handle_cli_file_convert(), handle_recordfile(), mixmonitor_save_prep(), record_exec(), and recordthread().

ast_writestream()

int ast_writestream	(	struct ast_filestream *	fs,
		struct ast_frame *	f
	)

Writes a frame to a stream.

Parameters

fs	filestream to write to
f	frame to write to the filestream Send a frame to a filestream – note: does NOT free the frame, call ast_frfree manually

Return values

0	on success.
-1	on failure.

Definition at line 255 of file file.c.

{
    int res = -1;
    if (f->frametype == AST_FRAME_VIDEO) {
        if (ast_format_get_type(fs->fmt->format) == AST_MEDIA_TYPE_AUDIO) {
            /* This is the audio portion.  Call the video one... */
            if (!fs->vfs && fs->filename) {
                const char *type = ast_format_get_name(f->subclass.format);
                fs->vfs = ast_writefile(fs->filename, type, NULL, fs->flags, 0, fs->mode);
                ast_debug(1, "Opened video output file\n");
            }
            if (fs->vfs)
                return ast_writestream(fs->vfs, f);
            /* else ignore */
            return 0;
        }
    } else if (f->frametype != AST_FRAME_VOICE) {
        ast_log(LOG_WARNING, "Tried to write non-voice frame\n");
        return -1;
    }
    if (ast_format_cmp(f->subclass.format, fs->fmt->format) != AST_FORMAT_CMP_NOT_EQUAL) {
        res =  fs->fmt->write(fs, f);
        if (res < 0)
            ast_log(LOG_WARNING, "Natural write failed\n");
        else if (res > 0)
            ast_log(LOG_WARNING, "Huh??\n");
    } else {
        /* XXX If they try to send us a type of frame that isn't the normal frame, and isn't
               the one we've setup a translator for, we do the "wrong thing" XXX */
        if (fs->trans && (ast_format_cmp(f->subclass.format, fs->lastwriteformat) != AST_FORMAT_CMP_EQUAL)) {
            ast_translator_free_path(fs->trans);
            fs->trans = NULL;
        }
        if (!fs->trans) {
            fs->trans = ast_translator_build_path(fs->fmt->format, f->subclass.format);
        }
        if (!fs->trans) {
            ast_log(LOG_WARNING, "Unable to translate to format %s, source format %s\n",
                fs->fmt->name, ast_format_get_name(f->subclass.format));
        } else {
            struct ast_frame *trf;
            ao2_replace(fs->lastwriteformat, f->subclass.format);
            /* Get the translated frame but don't consume the original in case they're using it on another stream */
            if ((trf = ast_translate(fs->trans, f, 0))) {
                struct ast_frame *cur;
 
                /* the translator may have returned multiple frames, so process them */
                for (cur = trf; cur; cur = AST_LIST_NEXT(cur, frame_list)) {
                    if ((res = fs->fmt->write(fs, cur))) {
                        ast_log(LOG_WARNING, "Translated frame write failed\n");
                        break;
                    }
                }
                ast_frfree(trf);
            } else {
                res = 0;
            }
        }
    }
    return res;
}

References ao2_replace, ast_debug, ast_format_cmp(), AST_FORMAT_CMP_EQUAL, AST_FORMAT_CMP_NOT_EQUAL, ast_format_get_name(), ast_format_get_type(), AST_FRAME_VIDEO, AST_FRAME_VOICE, ast_frfree, AST_LIST_NEXT, ast_log, AST_MEDIA_TYPE_AUDIO, ast_translate(), ast_translator_build_path(), ast_translator_free_path(), ast_writefile(), ast_writestream(), ast_filestream::filename, ast_filestream::flags, ast_filestream::fmt, ast_frame_subclass::format, ast_format_def::format, ast_frame::frametype, ast_filestream::lastwriteformat, LOG_WARNING, ast_filestream::mode, ast_format_def::name, NULL, ast_frame::subclass, ast_filestream::trans, type, ast_filestream::vfs, and ast_format_def::write.

Referenced by __ast_play_and_record(), ast_writestream(), dictate_exec(), handle_cli_file_convert(), handle_recordfile(), mixmonitor_thread(), record_exec(), and recordthread().