Files
asterisk/include/asterisk/media_index.h
George Joseph 7071e9d64c media_index.c: Refactored so it doesn't cache the index
Testing revealed that the cache added no benefit but that it could
consume excessive memory.

Two new index related functions were created:
ast_sounds_get_index_for_file() and ast_media_index_update_for_file()
which restrict index updating to specific sound files.

The original ast_sounds_get_index() and ast_media_index_update()
calls are still available but since they no longer cache the results
internally, developers should re-use an index they may already have
instead of calling ast_sounds_get_index() repeatedly.  If information
for only a single file is needed, ast_sounds_get_index_for_file()
should be called instead of ast_sounds_get_index().

The media_index directory scan code was elimininated in favor of
using the existing ast_file_read_dirs() function.

Since there's no more cache, ast_sounds_index_init now only
registers the sounds cli commands instead of generating the
initial index and subscribing to stasis format register/unregister
messages.

"sounds" is no longer a valid target for the "module reload"
command.

Both the sounds cli commands and the sounds ari resources were
refactored to only call ast_sounds_get_index() once per invocation
and to use ast_sounds_get_index_for_file() when a specific sound
file is requested.

Change-Id: I1cef327ba1b0648d85d218b70ce469ad07f4aa8d
2019-01-28 12:26:58 -07:00

129 lines
3.7 KiB
C

/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Kinsey Moore <kmoore@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
* \brief Media file format and description indexing engine.
*/
#ifndef _ASTERISK_MEDIA_INDEX_H
#define _ASTERISK_MEDIA_INDEX_H
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
struct ast_format_cap;
/*!
* \brief Object representing a media index
*/
struct ast_media_index;
/*!
* \brief Creates a new media index
*
* \param base_dir Base directory for indexing
*
* \retval NULL on error
* \retval A new AO2 refcounted media index
*/
struct ast_media_index *ast_media_index_create(
const char *base_dir);
/*!
* \brief Get the description for a media file
*
* \param index Media index in which to query information
* \param filename Name of the file for which to get the description
* \param variant Media variant for which to get the description
*
* \retval NULL if not found
* \return The description requested (must be copied to be kept)
*/
const char *ast_media_get_description(struct ast_media_index *index, const char *filename, const char *variant);
/*!
* \brief Get the ast_format_cap for a media file
*
* \param index Media index in which to query information
* \param filename Name of the file for which to get the description
* \param variant Media variant for which to get the description
*
* \retval NULL if not found
* \return a copy of the format capabilities (must be destroyed with ast_format_cap_destroy)
*/
struct ast_format_cap *ast_media_get_format_cap(struct ast_media_index *index, const char *filename, const char *variant);
/*!
* \brief Get the languages in which a media file is available
*
* \param index Media index in which to query information
* \param filename Name of the file for which to get available languages
*
* \retval NULL on error
* \return an ast_str_container filled with language strings
*/
struct ao2_container *ast_media_get_variants(struct ast_media_index *index, const char *filename);
/*!
* \brief Get the a container of all media available on the system
*
* \param index Media index in which to query information
*
* \retval NULL on error
* \return an ast_str_container filled with media file name strings
*/
struct ao2_container *ast_media_get_media(struct ast_media_index *index);
/*!
* \brief Update a media index for a specific sound file
*
* \since 13.25.0
* \since 16.2.0
*
* \param index Media index in which to query information
* \param variant Media variant for which to get the description
* \param filename Sound file name without extension
*
* \note If filename is NULL, this function will act as
* \ref ast_media_index_update and add all sound files to the index.
*
* \retval non-zero on error
* \return zero on success
*/
int ast_media_index_update_for_file(struct ast_media_index *index,
const char *variant, const char *filename);
/*!
* \brief Update a media index
*
* \param index Media index in which to query information
* \param variant Media variant for which to get the description
*
* \retval non-zero on error
* \return zero on success
*/
#define ast_media_index_update(index, variant) \
ast_media_index_update_for_file(index, variant, NULL)
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif /* _ASTERISK_MEDIA_INDEX_H */