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+/*
+ * Copyright (C) 2011 Nokia Corporation.
+ *
+ * Author: Jens Georg <jensg@openismus.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;
+using GUPnP;
+
+/**
+ * Base class for all transcoders that handle video.
+ */
+internal class Rygel.VideoTranscoder : Rygel.AudioTranscoder {
+ private int video_bitrate;
+ private Caps video_codec_format;
+ private Caps video_restrictions = null;
+
+ public VideoTranscoder (string content_type,
+ string dlna_profile,
+ int audio_bitrate,
+ int video_bitrate,
+ string container_caps,
+ string audio_codec_caps,
+ string video_codec_caps,
+ string extension,
+ string? restrictions = null) {
+
+ base.with_class (content_type,
+ dlna_profile,
+ VideoItem.UPNP_CLASS,
+ audio_bitrate,
+ container_caps,
+ audio_codec_caps,
+ extension);
+
+ this.video_bitrate = video_bitrate;
+ this.video_codec_format = Caps.from_string (video_codec_caps);
+
+ if (restrictions != null) {
+ this.video_restrictions = Caps.from_string (restrictions);
+ }
+ }
+
+ public override DIDLLiteResource? add_resource (DIDLLiteItem didl_item,
+ MediaItem item,
+ TranscodeManager manager)
+ throws Error {
+ var resource = base.add_resource (didl_item, item, manager);
+ if (resource == null) {
+ return null;
+ }
+
+ var video_item = item as VideoItem;
+
+ resource.width = video_item.width;
+ resource.height = video_item.height;
+ resource.bitrate = (this.video_bitrate + this.audio_bitrate) * 1000 / 8;
+
+ return resource;
+ }
+
+ public override uint get_distance (MediaItem item) {
+ if (!(item is VideoItem)) {
+ return uint.MAX;
+ }
+
+ var video_item = item as VideoItem;
+ var distance = uint.MIN;
+
+ if (video_item.bitrate > 0) {
+ distance += (video_item.bitrate - this.video_bitrate).abs ();
+ }
+
+ return distance;
+ }
+
+ protected override EncodingProfile get_encoding_profile () {
+ var enc_container_profile = base.get_encoding_profile () as
+ EncodingContainerProfile;
+
+ var enc_video_profile = new EncodingVideoProfile
+ (this.video_codec_format,
+ this.preset,
+ this.video_restrictions,
+ 1);
+ enc_video_profile.set_name ("video");
+
+ enc_container_profile.add_profile (enc_video_profile);
+
+ return enc_container_profile;
+ }
+}