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/*
* Copyright (C) 2008 Zeeshan Ali <zeenix@gmail.com>.
*
* Author: Zeeshan Ali <zeenix@gmail.com>
*
* This file is part of Rygel.
*
* Rygel is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Rygel is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
using Gst;
internal errordomain ThumbnailerError {
NO_DIR,
NO_THUMBNAIL
}
/**
* Provides thumbnails for images and vidoes.
*/
internal class Rygel.Thumbnailer : GLib.Object {
private static Thumbnailer thumbnailer; // Our singleton object
private static bool first_time = true;
public string directory;
private Thumbnail template;
private string extension;
private DbusThumbnailer thumbler = null;
private Thumbnailer () throws ThumbnailerError {
var dir = Path.build_filename (Environment.get_home_dir (),
".thumbnails",
"cropped");
var file = File.new_for_path (dir);
this.template = new Thumbnail ();
if (!file.query_exists (null)) {
dir = Path.build_filename (Environment.get_home_dir (),
".thumbnails",
"normal");
file = File.new_for_path (dir);
if (!file.query_exists (null)) {
var message = _("Failed to find thumbnails folder.");
throw new ThumbnailerError.NO_DIR (message);
} else {
this.template.mime_type = "image/png";
this.template.dlna_profile = "PNG_TN";
this.template.file_extension = "png";
this.template.width = 128;
this.template.height = 128;
this.template.depth = 32;
this.extension = "." + this.template.file_extension;
}
} else {
this.template.width = 124;
this.template.height = 124;
this.template.depth = 24;
this.extension = ".jpeg";
}
this.directory = dir;
try {
this.thumbler = new DbusThumbnailer ();
} catch (GLib.Error error) { }
}
public static Thumbnailer? get_default () {
if (first_time) {
try {
thumbnailer = new Thumbnailer ();
} catch (ThumbnailerError err) {
warning (_("No thumbnailer available: %s"), err.message);
}
first_time = false;
}
return thumbnailer;
}
public Thumbnail get_thumbnail (string uri, string mime_type) throws Error {
Thumbnail thumbnail = null;
var path = Checksum.compute_for_string (ChecksumType.MD5, uri) +
this.extension;
var full_path = Path.build_filename (this.directory, path);
var file = File.new_for_path (full_path);
// send a request to create thumbnail if it does not exist
if ((this.thumbler != null) && (!file.query_exists ())) {
this.thumbler.queue_thumbnail_task (uri, mime_type);
}
var info = file.query_info (FileAttribute.ACCESS_CAN_READ + "," +
FileAttribute.STANDARD_SIZE,
FileQueryInfoFlags.NONE,
null);
if (!info.get_attribute_boolean (FileAttribute.ACCESS_CAN_READ)) {
throw new ThumbnailerError.NO_THUMBNAIL
(_("No thumbnail available"));
}
thumbnail = new Thumbnail (this.template.mime_type,
this.template.dlna_profile,
this.template.file_extension);
thumbnail.width = this.template.width;
thumbnail.height = this.template.height;
thumbnail.depth = this.template.depth;
thumbnail.uri = Filename.to_uri (full_path, null);
thumbnail.size = (int64) info.get_attribute_uint64
(FileAttribute.STANDARD_SIZE);
return thumbnail;
}
}
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