media_index.c File Reference

Sound file format and description indexer. More...

#include "asterisk.h"
#include <dirent.h>
#include <sys/stat.h>
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/format.h"
#include "asterisk/format_cap.h"
#include "asterisk/media_index.h"
#include "asterisk/file.h"

Include dependency graph for media_index.c:

Go to the source code of this file.

Data Structures
struct	ast_media_index
struct	media_info
	Structure to hold information about a media file. More...
struct	media_variant
	Structure to hold a list of the format variations for a media file for a specific variant. More...
struct	read_dirs_data

Macros
#define	INDEX_BUCKETS   157
	The number of buckets to be used for storing media filename-keyed objects. More...
#define	VARIANT_BUCKETS   7
	The number of buckets to be used for storing variant-keyed objects. More...

Functions
static int	add_media_cb (void *obj, void *arg, int flags)
	Add the media_info's filename to the container of filenames requested. More...
static int	add_variant_cb (void *obj, void *arg, int flags)
	Add the variant to the list of variants requested. More...
static struct media_variant *	alloc_variant (struct ast_media_index *index, const char *filename, const char *variant_str)
	create the appropriate media_variant and any necessary structures More...
const char *	ast_media_get_description (struct ast_media_index *index, const char *filename, const char *variant_str)
	Get the description for a media file. More...
struct ast_format_cap *	ast_media_get_format_cap (struct ast_media_index *index, const char *filename, const char *variant_str)
	Get the ast_format_cap for a media file. More...
struct ao2_container *	ast_media_get_media (struct ast_media_index *index)
	Get the a container of all media available on the system. More...
struct ao2_container *	ast_media_get_variants (struct ast_media_index *index, const char *filename)
	Get the languages in which a media file is available. More...
struct ast_media_index *	ast_media_index_create (const char *base_dir)
	Creates a new media index. More...
int	ast_media_index_update_for_file (struct ast_media_index *index, const char *variant, const char *filename)
	Update a media index for a specific sound file. More...
static struct media_variant *	find_variant (struct ast_media_index *index, const char *filename, const char *variant)
static void	media_index_dtor (void *obj)
static struct media_info *	media_info_alloc (const char *name)
static int	media_info_cmp (void *obj, void *arg, int flags)
static void	media_info_destroy (void *obj)
static int	media_info_hash (const void *obj, const int flags)
static struct media_variant *	media_variant_alloc (const char *variant_str)
static int	media_variant_cmp (void *obj, void *arg, int flags)
static void	media_variant_destroy (void *obj)
static int	media_variant_hash (const void *obj, const int flags)
static int	process_description_file (struct ast_media_index *index, const char *subdir, const char *variant_str, const char *filename, const char *match_filename)
	Process a media description text file. More...
static int	process_media_file (struct ast_media_index *index, const char *variant, const char *subdir, const char *filename_stripped, const char *ext)
	Process a media file into the index. More...
static int	read_dirs_cb (const char *dir_name, const char *filename, void *obj)
static int	update_file_format_info (struct ast_media_index *index, const char *filename, const char *variant_str, struct ast_format *file_format)
	Update an index with new format/variant information. More...

Detailed Description

Sound file format and description indexer.

Definition in file media_index.c.

Macro Definition Documentation

INDEX_BUCKETS

#define INDEX_BUCKETS   157

The number of buckets to be used for storing media filename-keyed objects.

Definition at line 43 of file media_index.c.

VARIANT_BUCKETS

#define VARIANT_BUCKETS   7

The number of buckets to be used for storing variant-keyed objects.

Definition at line 40 of file media_index.c.

Function Documentation

add_media_cb()

static int add_media_cb ( void *  obj, void *  arg, int  flags  )

static

Add the media_info's filename to the container of filenames requested.

Definition at line 299 of file media_index.c.

{
    struct media_info *info = obj;
    struct ao2_container *media = arg;
    ast_str_container_add(media, info->name);
    return 0;
}

References ast_str_container_add(), and sip_to_pjsip::info().

Referenced by ast_media_get_media().

add_variant_cb()

static int add_variant_cb ( void *  obj, void *  arg, int  flags  )

static

Add the variant to the list of variants requested.

Definition at line 266 of file media_index.c.

{
    struct media_variant *variant = obj;
    struct ao2_container *variants= arg;
    ast_str_container_add(variants, variant->variant);
    return 0;
}

References ast_str_container_add(), and media_variant::variant.

Referenced by ast_media_get_variants().

alloc_variant()

static struct media_variant * alloc_variant ( struct ast_media_index *  index, const char *  filename, const char *  variant_str  )

static

create the appropriate media_variant and any necessary structures

Definition at line 197 of file media_index.c.

{
    struct media_info *info;
    struct media_variant *variant = NULL;
 
    info = ao2_find(index->index, filename, OBJ_KEY);
    if (!info) {
        /* This is the first time the index has seen this filename,
         * allocate and link */
        info = media_info_alloc(filename);
        if (!info) {
            return NULL;
        }
 
        ao2_link(index->index, info);
    } else {
        variant = ao2_find(info->variants, variant_str, OBJ_KEY);
    }
 
    if (!variant) {
        /* This is the first time the index has seen this variant for
         * this filename, allocate and link */
        variant = media_variant_alloc(variant_str);
        if (variant) {
            ao2_link(info->variants, variant);
        }
    }
 
    ao2_ref(info, -1);
 
    return variant;
}

References ao2_find, ao2_link, ao2_ref, ast_media_index::index, sip_to_pjsip::info(), media_info_alloc(), media_variant_alloc(), NULL, OBJ_KEY, and media_variant::variant.

Referenced by process_description_file(), and update_file_format_info().

ast_media_get_description()

const char * ast_media_get_description	(	struct ast_media_index *	index,
		const char *	filename,
		const char *	variant
	)

Get the description for a media file.

Parameters

index	Media index in which to query information
filename	Name of the file for which to get the description
variant	Media variant for which to get the description

Return values

NULL	if not found

Returns

The description requested (must be copied to be kept)

Definition at line 230 of file media_index.c.

{
    RAII_VAR(struct media_variant *, variant, NULL, ao2_cleanup);
    if (ast_strlen_zero(filename) || ast_strlen_zero(variant_str)) {
        return NULL;
    }
 
    variant = find_variant(index, filename, variant_str);
    if (!variant) {
        return NULL;
    }
 
    return variant->description;
}

References ao2_cleanup, ast_strlen_zero(), find_variant(), NULL, RAII_VAR, and media_variant::variant.

Referenced by create_sound_blob(), and show_sound_info_cb().

ast_media_get_format_cap()

struct ast_format_cap * ast_media_get_format_cap	(	struct ast_media_index *	index,
		const char *	filename,
		const char *	variant
	)

Get the ast_format_cap for a media file.

Parameters

index	Media index in which to query information
filename	Name of the file for which to get the description
variant	Media variant for which to get the description

Return values

NULL	if not found

Returns

a copy of the format capabilities (must be destroyed with ast_format_cap_destroy)

Definition at line 245 of file media_index.c.

{
    struct ast_format_cap *dupcap;
    RAII_VAR(struct media_variant *, variant, NULL, ao2_cleanup);
    if (ast_strlen_zero(filename) || ast_strlen_zero(variant_str)) {
        return NULL;
    }
 
    variant = find_variant(index, filename, variant_str);
    if (!variant) {
        return NULL;
    }
 
    dupcap = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
    if (dupcap) {
        ast_format_cap_append_from_cap(dupcap, variant->formats, AST_MEDIA_TYPE_UNKNOWN);
    }
    return dupcap;
}

References ao2_cleanup, ast_format_cap_alloc, ast_format_cap_append_from_cap(), AST_FORMAT_CAP_FLAG_DEFAULT, AST_MEDIA_TYPE_UNKNOWN, ast_strlen_zero(), find_variant(), ast_format_cap::formats, NULL, and RAII_VAR.

Referenced by add_format_information_cb(), and show_sound_info_cb().

ast_media_get_media()

struct ao2_container * ast_media_get_media

(

struct ast_media_index *

index

)

Get the a container of all media available on the system.

Parameters

index

Media index in which to query information

Return values

NULL

on error

Returns

an ast_str_container filled with media file name strings

Definition at line 307 of file media_index.c.

{
    RAII_VAR(struct ao2_container *, media, NULL, ao2_cleanup);
 
    if (!index->media_list_cache) {
        media = ast_str_container_alloc(INDEX_BUCKETS);
        if (!media) {
            return NULL;
        }
 
        ao2_callback(index->index, OBJ_NODATA, add_media_cb, media);
 
        /* Ref to the cache */
        ao2_ref(media, +1);
        index->media_list_cache = media;
    }
 
    /* Ref to the caller */
    ao2_ref(index->media_list_cache, +1);
    return index->media_list_cache;
}

References add_media_cb(), ao2_callback, ao2_cleanup, ao2_ref, ast_str_container_alloc, ast_media_index::index, INDEX_BUCKETS, ast_media_index::media_list_cache, NULL, OBJ_NODATA, and RAII_VAR.

Referenced by ast_ari_sounds_list(), handle_cli_sound_show(), and handle_cli_sounds_show().

ast_media_get_variants()

struct ao2_container * ast_media_get_variants	(	struct ast_media_index *	index,
		const char *	filename
	)

Get the languages in which a media file is available.

Parameters

index	Media index in which to query information
filename	Name of the file for which to get available languages

Return values

NULL

on error

Returns

an ast_str_container filled with language strings

Definition at line 274 of file media_index.c.

{
    RAII_VAR(struct media_info *, info, NULL, ao2_cleanup);
    RAII_VAR(struct ao2_container *, variants, NULL, ao2_cleanup);
    if (!filename) {
        return NULL;
    }
 
    variants = ast_str_container_alloc(VARIANT_BUCKETS);
    if (!variants) {
        return NULL;
    }
 
    info = ao2_find(index->index, filename, OBJ_KEY);
    if (!info) {
        return NULL;
    }
 
    ao2_callback(info->variants, OBJ_NODATA, add_variant_cb, variants);
 
    ao2_ref(variants, +1);
    return variants;
}

References add_variant_cb(), ao2_callback, ao2_cleanup, ao2_find, ao2_ref, ast_str_container_alloc, ast_media_index::index, sip_to_pjsip::info(), NULL, OBJ_KEY, OBJ_NODATA, RAII_VAR, and VARIANT_BUCKETS.

Referenced by create_sound_blob(), and handle_cli_sound_show().

ast_media_index_create()

struct ast_media_index * ast_media_index_create

(

const char *

base_dir

)

Creates a new media index.

Parameters

base_dir

Base directory for indexing

Return values

NULL	on error
A	new AO2 refcounted media index

Definition at line 162 of file media_index.c.

{
    size_t base_dir_sz = strlen(base_dir) + 1;
    struct ast_media_index *index = ao2_alloc(sizeof(*index) + base_dir_sz, media_index_dtor);
 
    if (!index) {
        return NULL;
    }
 
    memcpy(index->base_dir, base_dir, base_dir_sz);
 
    index->index = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0, INDEX_BUCKETS,
        media_info_hash, NULL, media_info_cmp);
    if (!index->index) {
        ao2_ref(index, -1);
 
        return NULL;
    }
 
    return index;
}

References ao2_alloc, AO2_ALLOC_OPT_LOCK_MUTEX, ao2_container_alloc_hash, ao2_ref, ast_media_index::base_dir, ast_media_index::index, INDEX_BUCKETS, media_index_dtor(), media_info_cmp(), media_info_hash(), and NULL.

Referenced by ast_sounds_get_index_for_file().

ast_media_index_update_for_file()

int ast_media_index_update_for_file	(	struct ast_media_index *	index,
		const char *	variant,
		const char *	filename
	)

Update a media index for a specific sound file.

Since

13.25.0

16.2.0

Parameters

index	Media index in which to query information
variant	Media variant for which to get the description
filename	Sound file name without extension

Note

If filename is NULL, this function will act as ast_media_index_update and add all sound files to the index.

Return values

non-zero

on error

Returns

zero on success

Definition at line 587 of file media_index.c.

{
    struct timeval start;
    struct timeval end;
    int64_t elapsed;
    int rc;
    size_t dirname_len = strlen(index->base_dir) + strlen(S_OR(variant, "")) + 1;
    struct read_dirs_data data = {
        .search_filename = S_OR(filename, ""),
        .search_filename_len = strlen(S_OR(filename, "")),
        .search_variant = S_OR(variant, ""),
        .index = index,
        .dirname_len = dirname_len,
    };
    char *search_dir = ast_alloca(dirname_len + 1);
 
    sprintf(search_dir, "%s%s%s", index->base_dir, ast_strlen_zero(variant) ? "" : "/",
        data.search_variant);
 
    gettimeofday(&start, NULL);
    rc = ast_file_read_dirs(search_dir, read_dirs_cb, &data, -1);
    gettimeofday(&end, NULL);
    elapsed = ast_tvdiff_us(end, start);
    ast_debug(1, "Media for language '%s' indexed in %8.6f seconds\n", data.search_variant, elapsed / 1E6);
 
    return rc;
}

References ast_alloca, ast_debug, ast_file_read_dirs(), ast_strlen_zero(), ast_tvdiff_us(), ast_media_index::base_dir, read_dirs_data::dirname_len, end, read_dirs_data::index, NULL, read_dirs_cb(), S_OR, read_dirs_data::search_filename, and read_dirs_data::search_variant.

Referenced by update_index_cb().

find_variant()

static struct media_variant * find_variant ( struct ast_media_index *  index, const char *  filename, const char *  variant  )

static

Definition at line 184 of file media_index.c.

{
    RAII_VAR(struct media_info *, info, NULL, ao2_cleanup);
 
    info = ao2_find(index->index, filename, OBJ_KEY);
    if (!info) {
        return NULL;
    }
 
    return ao2_find(info->variants, variant, OBJ_KEY);
}

References ao2_cleanup, ao2_find, ast_media_index::index, sip_to_pjsip::info(), NULL, OBJ_KEY, RAII_VAR, and media_variant::variant.

Referenced by ast_media_get_description(), and ast_media_get_format_cap().

media_index_dtor()

static void media_index_dtor ( void *  obj )

static

Definition at line 154 of file media_index.c.

{
    struct ast_media_index *index = obj;
 
    ao2_cleanup(index->index);
    ao2_cleanup(index->media_list_cache);
}

References ao2_cleanup, and ast_media_index::index.

Referenced by ast_media_index_create().

media_info_alloc()

static struct media_info * media_info_alloc ( const char *  name )

static

Definition at line 111 of file media_index.c.

{
    size_t name_sz = strlen(name) + 1;
    struct media_info *info;
 
    info = ao2_alloc_options(sizeof(*info) + name_sz, media_info_destroy,
        AO2_ALLOC_OPT_LOCK_NOLOCK);
    if (!info) {
        return NULL;
    }
 
    memcpy(info->name, name, name_sz);
 
    info->variants = ao2_container_alloc_hash(AO2_ALLOC_OPT_LOCK_MUTEX, 0,
        VARIANT_BUCKETS, media_variant_hash, NULL, media_variant_cmp);
    if (!info->variants) {
        ao2_ref(info, -1);
 
        return NULL;
    }
 
    return info;
}

References AO2_ALLOC_OPT_LOCK_MUTEX, AO2_ALLOC_OPT_LOCK_NOLOCK, ao2_alloc_options, ao2_container_alloc_hash, ao2_ref, sip_to_pjsip::info(), media_info_destroy(), media_variant_cmp(), media_variant_hash(), name, NULL, and VARIANT_BUCKETS.

Referenced by alloc_variant().

media_info_cmp()

static int media_info_cmp ( void *  obj, void *  arg, int  flags  )

static

Definition at line 141 of file media_index.c.

{
    struct media_info *opt1 = obj, *opt2 = arg;
    const char *name = (flags & OBJ_KEY) ? arg : opt2->name;
    return strcasecmp(opt1->name, name) ? 0 : CMP_MATCH | CMP_STOP;
}

References CMP_MATCH, CMP_STOP, media_info::name, name, and OBJ_KEY.

Referenced by ast_media_index_create().

media_info_destroy()

static void media_info_destroy ( void *  obj )

static

Definition at line 104 of file media_index.c.

{
    struct media_info *info = obj;
 
    ao2_cleanup(info->variants);
}

References ao2_cleanup, and sip_to_pjsip::info().

Referenced by media_info_alloc().

media_info_hash()

static int media_info_hash ( const void *  obj, const int  flags  )

static

Definition at line 135 of file media_index.c.

{
    const char *name = (flags & OBJ_KEY) ? obj : ((struct media_info*) obj)->name;
    return ast_str_case_hash(name);
}

References ast_str_case_hash(), name, and OBJ_KEY.

Referenced by ast_media_index_create().

media_variant_alloc()

static struct media_variant * media_variant_alloc ( const char *  variant_str )

static

Definition at line 62 of file media_index.c.

{
    size_t str_sz = strlen(variant_str) + 1;
    struct media_variant *variant;
 
    variant = ao2_alloc_options(sizeof(*variant) + str_sz, media_variant_destroy,
        AO2_ALLOC_OPT_LOCK_NOLOCK);
    if (!variant) {
        return NULL;
    }
 
    memcpy(variant->variant, variant_str, str_sz);
 
    variant->formats = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
    if (!variant->formats || ast_string_field_init(variant, 8)) {
        ao2_ref(variant, -1);
 
        return NULL;
    }
 
    return variant;
}

References AO2_ALLOC_OPT_LOCK_NOLOCK, ao2_alloc_options, ao2_ref, ast_format_cap_alloc, AST_FORMAT_CAP_FLAG_DEFAULT, ast_string_field_init, media_variant_destroy(), NULL, and media_variant::variant.

Referenced by alloc_variant().

media_variant_cmp()

static int media_variant_cmp ( void *  obj, void *  arg, int  flags  )

static

Definition at line 91 of file media_index.c.

{
    struct media_variant *opt1 = obj, *opt2 = arg;
    const char *variant = (flags & OBJ_KEY) ? arg : opt2->variant;
    return strcasecmp(opt1->variant, variant) ? 0 : CMP_MATCH | CMP_STOP;
}

References CMP_MATCH, CMP_STOP, OBJ_KEY, and media_variant::variant.

Referenced by media_info_alloc().

media_variant_destroy()

static void media_variant_destroy ( void *  obj )

static

Definition at line 54 of file media_index.c.

{
    struct media_variant *variant = obj;
 
    ast_string_field_free_memory(variant);
    ao2_cleanup(variant->formats);
}

References ao2_cleanup, ast_string_field_free_memory, and media_variant::variant.

Referenced by media_variant_alloc().

media_variant_hash()

static int media_variant_hash ( const void *  obj, const int  flags  )

static

Definition at line 85 of file media_index.c.

{
    const char *variant = (flags & OBJ_KEY) ? obj : ((struct media_variant*) obj)->variant;
    return ast_str_case_hash(variant);
}

References ast_str_case_hash(), OBJ_KEY, and media_variant::variant.

Referenced by media_info_alloc().

process_description_file()

static int process_description_file ( struct ast_media_index *  index, const char *  subdir, const char *  variant_str, const char *  filename, const char *  match_filename  )

static

Process a media description text file.

This currently processes core-sounds-*.txt and extra-sounds-*.txt, but will process others if present.

Definition at line 380 of file media_index.c.

{
    RAII_VAR(struct ast_str *, description_file_path, ast_str_create(64), ast_free);
    RAII_VAR(struct ast_str *, cumulative_description, ast_str_create(64), ast_free);
    char *file_id_persist = NULL;
    int res = 0;
    FILE *f = NULL;
#if defined(LOW_MEMORY)
    char buf[256];
#else
    char buf[2048];
#endif
 
    if (!description_file_path || !cumulative_description) {
        return -1;
    }
 
    if (ast_strlen_zero(subdir)) {
        ast_str_set(&description_file_path, 0, "%s/%s/%s", index->base_dir, variant_str, filename);
    } else {
        ast_str_set(&description_file_path, 0, "%s/%s/%s/%s", index->base_dir, variant_str, subdir, filename);
    }
    f = fopen(ast_str_buffer(description_file_path), "r");
    if (!f) {
        ast_log(LOG_WARNING, "Could not open media description file '%s': %s\n", ast_str_buffer(description_file_path), strerror(errno));
        return -1;
    }
 
    while (!feof(f)) {
        char *file_identifier, *description;
        if (!fgets(buf, sizeof(buf), f)) {
            if (ferror(f)) {
                ast_log(LOG_ERROR, "Error reading from file %s: %s\n", ast_str_buffer(description_file_path), strerror(errno));
            }
            continue;
        }
 
        /* Skip lines that are too long */
        if (strlen(buf) == sizeof(buf) - 1 && buf[sizeof(buf) - 1] != '\n') {
            ast_log(LOG_WARNING, "Line too long, skipping. It begins with: %.32s...\n", buf);
            while (fgets(buf, sizeof(buf), f)) {
                if (strlen(buf) != sizeof(buf) - 1 || buf[sizeof(buf) - 1] == '\n') {
                    break;
                }
            }
            if (ferror(f)) {
                ast_log(LOG_ERROR, "Error reading from file %s: %s\n", ast_str_buffer(description_file_path), strerror(errno));
            }
            continue;
        }
 
        if (buf[0] == ';') {
            /* ignore comments */
            continue;
        }
 
        ast_trim_blanks(buf);
        description = buf;
        file_identifier = strsep(&description, ":");
        if (!description) {
            /* no ':' means this is a continuation */
            if (file_id_persist) {
                ast_str_append(&cumulative_description, 0, "\n%s", file_identifier);
            }
            continue;
        } else {
            /* if there's text in cumulative_description, archive it and start anew */
            if (file_id_persist && !ast_strlen_zero(ast_str_buffer(cumulative_description))) {
                struct media_variant *variant;
 
                /*
                 * If we were only searching for a specific sound filename
                 * don't include others.
                 */
                if (ast_strlen_zero(match_filename) || strcmp(match_filename, file_id_persist) == 0) {
                    variant = alloc_variant(index, file_id_persist, variant_str);
                    if (!variant) {
                        res = -1;
                        break;
                    }
                    ast_string_field_set(variant, description, ast_str_buffer(cumulative_description));
                    ao2_ref(variant, -1);
                }
 
                ast_str_reset(cumulative_description);
            }
 
            ast_free(file_id_persist);
            file_id_persist = ast_strdup(file_identifier);
            description = ast_skip_blanks(description);
            ast_str_set(&cumulative_description, 0, "%s", description);
        }
    }
 
    /* handle the last one */
    if (file_id_persist && !ast_strlen_zero(ast_str_buffer(cumulative_description))) {
        struct media_variant *variant;
 
        /*
         * If we were only searching for a specific sound filename
         * don't include others.
         */
        if (ast_strlen_zero(match_filename) || strcmp(match_filename, file_id_persist) == 0) {
            variant = alloc_variant(index, file_id_persist, variant_str);
            if (variant) {
                ast_string_field_set(variant, description, ast_str_buffer(cumulative_description));
                ao2_ref(variant, -1);
            } else {
                res = -1;
            }
        }
    }
 
    ast_free(file_id_persist);
    fclose(f);
    return res;
}

References alloc_variant(), ao2_ref, ast_free, ast_log, ast_skip_blanks(), ast_str_append(), ast_str_buffer(), ast_str_create, ast_str_reset(), ast_str_set(), ast_strdup, ast_string_field_set, ast_strlen_zero(), ast_trim_blanks(), ast_media_index::base_dir, buf, media_variant::description, errno, LOG_ERROR, LOG_WARNING, NULL, RAII_VAR, strsep(), and media_variant::variant.

Referenced by read_dirs_cb().

process_media_file()

static int process_media_file ( struct ast_media_index *  index, const char *  variant, const char *  subdir, const char *  filename_stripped, const char *  ext  )

static

Process a media file into the index.

Definition at line 346 of file media_index.c.

{
    struct ast_format *file_format;
    const char *file_identifier = filename_stripped;
    char *file_id_str = NULL;
    int res;
 
    file_format = ast_get_format_for_file_ext(ext);
    if (!file_format) {
        /* extension not registered */
        return 0;
    }
 
    /* handle updating the file information */
    if (subdir) {
        if (ast_asprintf(&file_id_str, "%s/%s", subdir, filename_stripped) == -1) {
            return -1;
        }
 
        file_identifier = file_id_str;
    }
 
    res = update_file_format_info(index, file_identifier, variant, file_format);
    ast_free(file_id_str);
 
    return res;
}

References ast_asprintf, ast_free, ast_get_format_for_file_ext(), ext, NULL, and update_file_format_info().

Referenced by read_dirs_cb().

read_dirs_cb()

static int read_dirs_cb ( const char *  dir_name, const char *  filename, void *  obj  )

static

Definition at line 510 of file media_index.c.

{
    struct read_dirs_data *data = obj;
    char *ext;
    size_t match_len;
    char *match;
    size_t match_base_len;
    char *subdirs = (char *)dir_name + data->dirname_len;
 
    /*
     * Example:
     * From the filesystem:
     *    index's base_dir = "/var/lib/asterisk/sounds"
     *    search_variant = "en"
     *    search directory base = "/var/lib/asterisk/sounds/en"
     *    dirname_len = 27
     *    current dir_name = "/var/lib/asterisk/sounds/en/digits"
     *    subdirs =                                     "/digits"
     *    filename = "1.ulaw"
     *
     * From the search criteria:
     *    search_filename = "digits/1"
     *    search_filename_len = 8
     */
 
    if (*subdirs == '/') {
        subdirs++;
    }
 
    /* subdirs = "digits" */
 
    match_len = strlen(subdirs) + strlen(filename) + 2;
    match = ast_alloca(match_len);
    snprintf(match, match_len, "%s%s%s", subdirs,
        ast_strlen_zero(subdirs) ? "" : "/", filename);
 
    /* match = discovered filename relative to language = "digits/1.ulaw" */
 
    ext = strrchr(match, '.');
    if (!ext) {
        return 0;
    }
 
    /* ext = ".ulaw" */
 
    if (data->search_filename_len > 0) {
        match_base_len = ext - match;
        /*
         * match_base_len = length of "digits/1" = 8 which
         * happens to match the length of search_filename.
         * However if the discovered filename was 11.ulaw
         * it would be length of "digits/11" = 9.
         * We need to use the larger during the compare to
         * make sure we don't match just search_filename
         * as a substring of the discovered filename.
         */
        if (data->search_filename_len > match_base_len) {
            match_base_len = data->search_filename_len;
        }
    }
 
    /* We always process txt files because they should contain description. */
    if (strcmp(ext, ".txt") == 0) {
        if (process_description_file(data->index, NULL, data->search_variant,
            match, data->search_filename)) {
            return -1;
        }
    } else if (data->search_filename_len == 0
        || strncmp(data->search_filename, match, match_base_len ) == 0) {
        *ext = '\0';
        ext++;
        process_media_file(data->index, data->search_variant, NULL, match, ext);
    }
 
    return 0;
}

References ast_alloca, ast_strlen_zero(), read_dirs_data::dirname_len, ext, if(), read_dirs_data::index, match(), NULL, process_description_file(), process_media_file(), read_dirs_data::search_filename, read_dirs_data::search_filename_len, and read_dirs_data::search_variant.

Referenced by ast_media_index_update_for_file().

update_file_format_info()

static int update_file_format_info ( struct ast_media_index *  index, const char *  filename, const char *  variant_str, struct ast_format *  file_format  )

static

Update an index with new format/variant information.

Definition at line 330 of file media_index.c.

{
    struct media_variant *variant;
 
    variant = alloc_variant(index, filename, variant_str);
    if (!variant) {
        return -1;
    }
 
    ast_format_cap_append(variant->formats, file_format, 0);
    ao2_ref(variant, -1);
 
    return 0;
}

References alloc_variant(), ao2_ref, ast_format_cap_append, and media_variant::variant.

Referenced by process_media_file().