/**
* tracker_media_art_get_path:
* @artist: the artist
* @title: the title
* @prefix: For example "album"
* @uri: NULL or the uri of the file
* @path: the location to store the local path
* @local_uri: the location to store the local uri or NULL
*
* Get the path to media art for a given resource. Newly allocated data in
* @path and @local_uri must be freed with g_free.
*
* Since: 0.10.14
*/
void
tracker_media_art_get_path (const gchar *artist,
const gchar *title,
const gchar *prefix,
const gchar *uri,
gchar **path,
gchar **local_uri)
{
const gchar *space_checksum = "7215ee9c7d9dc229d2921a40e899ec5f";
const gchar *a, *b;
gchar *art_filename;
gchar *dir;
gchar *artist_down, *title_down;
gchar *artist_stripped, *title_stripped;
gchar *artist_norm, *title_norm;
gchar *artist_checksum = NULL, *title_checksum = NULL;
/* http://live.gnome.org/MediaArtStorageSpec */
if (path) {
*path = NULL;
}
if (local_uri) {
*local_uri = NULL;
}
if (!artist && !title) {
return;
}
if (artist) {
artist_stripped = tracker_media_art_strip_invalid_entities (artist);
artist_norm = g_utf8_normalize (artist_stripped, -1, G_NORMALIZE_NFKD);
artist_down = g_utf8_strdown (artist_norm, -1);
artist_checksum = media_art_checksum_for_data (G_CHECKSUM_MD5,
(const guchar *) artist_down,
strlen (artist_down));
}
if (title) {
title_stripped = tracker_media_art_strip_invalid_entities (title);
title_norm = g_utf8_normalize (title_stripped, -1, G_NORMALIZE_NFKD);
title_down = g_utf8_strdown (title_norm, -1);
title_checksum = media_art_checksum_for_data (G_CHECKSUM_MD5,
(const guchar *) title_down,
strlen (title_down));
}
dir = g_build_filename (g_get_user_cache_dir (),
"media-art",
NULL);
if (!g_file_test (dir, G_FILE_TEST_EXISTS)) {
g_mkdir_with_parents (dir, 0770);
}
if (artist) {
a = artist_checksum;
b = title ? title_checksum : space_checksum;
} else {
a = title_checksum;
b = space_checksum;
}
art_filename = g_strdup_printf ("%s-%s-%s.jpeg", prefix ? prefix : "album", a, b);
if (artist) {
g_free (artist_checksum);
g_free (artist_stripped);
g_free (artist_down);
g_free (artist_norm);
}
if (title) {
g_free (title_checksum);
g_free (title_stripped);
g_free (title_down);
g_free (title_norm);
}
if (path) {
*path = g_build_filename (dir, art_filename, NULL);
}
if (local_uri) {
gchar *local_dir;
GFile *file, *parent;
if (strstr (uri, "://")) {
file = g_file_new_for_uri (uri);
} else {
file = g_file_new_for_path (uri);
}
parent = g_file_get_parent (file);
if (parent) {
local_dir = g_file_get_uri (parent);
/* This is a URI, don't use g_build_filename here */
*local_uri = g_strdup_printf ("%s/.mediaartlocal/%s", local_dir, art_filename);
g_free (local_dir);
g_object_unref (parent);
}
g_object_unref (file);
}
g_free (dir);
g_free (art_filename);
}
/**
* media_art_get_file:
* @artist: (allow-none): the artist
* @title: (allow-none): the title
* @prefix: (allow-none): the prefix for cache files, for example "album"
* @cache_file: (out) (transfer full) (allow-none): a pointer to a
* #GFile which represents the cached file for media art, or %NULL
* a #GFile representing the user's cache path, or %NULL
* #GFile representing the location of the local media art
*
* Gets the files pointing to cache files suitable for storing the media
* art provided by the @artist, @title and @file arguments. @cache_file
* will point to a location in the XDG user cache directory..
*
* The @cache_file relates to a symlink stored in XDG cache directories
* for the user. A @cache_file would be expected to look like
* <filename>file:///home/martyn/.cache/media-art/...</filename>. This
* is normally the location that is most useful (assuming the cache
* has been extracted in the first place).
*
* When done, both #GFile<!-- -->s must be freed with g_object_unref() if
* non-%NULL.
*
* This operation should not use i/o, but it depends on the backend
* GFile implementation.
*
* Returns: %TRUE if @cache_file was returned, otherwise %FALSE.
*
* Since: 0.2.0
*/
gboolean
media_art_get_file (const gchar *artist,
const gchar *title,
const gchar *prefix,
GFile **cache_file)
{
const gchar *space_checksum = "7215ee9c7d9dc229d2921a40e899ec5f";
const gchar *a, *b;
gchar *art_filename;
gchar *dir, *filename;
gchar *artist_down, *title_down;
gchar *artist_stripped, *title_stripped;
gchar *artist_norm, *title_norm;
gchar *artist_checksum = NULL, *title_checksum = NULL;
/* http://live.gnome.org/MediaArtStorageSpec */
if (cache_file) {
*cache_file = NULL;
}
/* Rules:
* 1. artist OR title must be non-NULL.
* 2. cache_file must be non-NULL
*/
g_return_val_if_fail (artist != NULL || title != NULL, FALSE);
g_return_val_if_fail (!G_IS_FILE (cache_file), FALSE);
if (artist) {
artist_stripped = media_art_strip_invalid_entities (artist);
artist_norm = g_utf8_normalize (artist_stripped, -1, G_NORMALIZE_NFKD);
artist_down = g_utf8_strdown (artist_norm, -1);
artist_checksum = media_art_checksum_for_data (G_CHECKSUM_MD5,
(const guchar *) artist_down,
strlen (artist_down));
}
if (title) {
title_stripped = media_art_strip_invalid_entities (title);
title_norm = g_utf8_normalize (title_stripped, -1, G_NORMALIZE_NFKD);
title_down = g_utf8_strdown (title_norm, -1);
title_checksum = media_art_checksum_for_data (G_CHECKSUM_MD5,
(const guchar *) title_down,
strlen (title_down));
}
dir = g_build_filename (g_get_user_cache_dir (),
"media-art",
NULL);
if (artist) {
a = artist_checksum;
b = title ? title_checksum : space_checksum;
} else {
a = title_checksum;
b = space_checksum;
}
art_filename = g_strdup_printf ("%s-%s-%s.jpeg", prefix ? prefix : "album", a, b);
if (artist) {
g_free (artist_checksum);
g_free (artist_stripped);
g_free (artist_down);
g_free (artist_norm);
}
if (title) {
g_free (title_checksum);
g_free (title_stripped);
g_free (title_down);
g_free (title_norm);
}
if (cache_file) {
filename = g_build_filename (dir, art_filename, NULL);
*cache_file = g_file_new_for_path (filename);
g_free (filename);
}
g_free (dir);
g_free (art_filename);
return TRUE;
}
