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[rygel] gstlaunch: add new plugin that shares gstreamer launch lines

commit c940421a753fd4b8281be5f89f0d6a718721db98
Author: Thijs Vermeir <thijsvermeir gmail com>
Date:   Sun Aug 16 21:01:27 2009 +0200

    gstlaunch: add new plugin that shares gstreamer launch lines
    
    This plugin is reading from a configuration KeyFile and creates a item
    for every group in this file.

 autogen.sh                                         |    3 +-
 configure.ac                                       |    7 +
 data/Makefile.am                                   |    1 +
 data/rygel-gstlaunch.conf                          |   15 ++
 src/plugins/Makefile.am                            |    7 +-
 src/plugins/gstlaunch/Makefile.am                  |   31 ++++
 .../gstlaunch/rygel-gstlaunch-content-dir.vala     |   34 +++++
 src/plugins/gstlaunch/rygel-gstlaunch-item.vala    |   56 ++++++++
 src/plugins/gstlaunch/rygel-gstlaunch-plugin.vala  |   39 +++++
 .../gstlaunch/rygel-gstlaunch-root-container.vala  |  150 ++++++++++++++++++++
 10 files changed, 341 insertions(+), 2 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 816f74c..a9344e4 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -3,4 +3,5 @@ mkdir -p m4
 autoreconf -v --install || exit 1
 glib-gettextize --force --copy || exit 1
 ./configure --enable-vala --enable-maintainer-mode --enable-debug \
-            --enable-test-plugin --enable-mediathek-plugin "$@"
+            --enable-test-plugin --enable-mediathek-plugin \
+	    --enable-gstlaunch-plugin "$@"
diff --git a/configure.ac b/configure.ac
index 045e8cc..b06c850 100644
--- a/configure.ac
+++ b/configure.ac
@@ -195,6 +195,11 @@ AC_ARG_ENABLE(mediathek-plugin,
 	[  --enable-mediathek-plugin          build Mediathek plugin],,
         enable_mediathek_plugin=no)
 
+# Build GstLaunch plugin
+AC_ARG_ENABLE(gstlaunch-plugin,
+	[  --enable-gstlaunch-plugin          build Gstreamer launchline plugin],,
+        enable_gstlaunch_plugin=no)
+
 
 AC_SUBST(abs_top_builddir)
 
@@ -206,6 +211,7 @@ AM_CONDITIONAL([BUILD_TRACKER_PLUGIN],
 AM_CONDITIONAL([BUILD_MEDIATHEK_PLUGIN], [test "x$enable_mediathek_plugin" = "xyes"])
 AM_CONDITIONAL([BUILD_MEDIA_EXPORT_PLUGIN], [test "x$enable_media_export_plugin" = "xyes"])
 AM_CONDITIONAL([BUILD_EXTERNAL_PLUGIN], [test "x$enable_external_plugin" = "xyes"])
+AM_CONDITIONAL([BUILD_GSTLAUNCH_PLUGIN], [test "x$enable_gstlaunch_plugin" = "xyes"])
 
 # Gettext
 GETTEXT_PACKAGE=rygel
@@ -228,6 +234,7 @@ src/ui/Makefile
 src/plugins/Makefile
 src/plugins/media-export/Makefile
 src/plugins/external/Makefile
+src/plugins/gstlaunch/Makefile
 src/plugins/mediathek/Makefile
 src/plugins/tracker/Makefile
 src/plugins/test/Makefile
diff --git a/data/Makefile.am b/data/Makefile.am
index 6ff991d..cbb064e 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -38,6 +38,7 @@ $(desktop_DATA): $(desktop_in_files) Makefile
 CLEANFILES = $(dbusservice_DATA) $(desktop_DATA) rygel.conf
 EXTRA_DIST = rygel-maemo.conf \
 	     rygel-default.conf \
+	     rygel-gstlaunch.conf \
 	     $(dbusservice_in_files) \
 	     $(desktop_in_files)
 
diff --git a/data/rygel-gstlaunch.conf b/data/rygel-gstlaunch.conf
new file mode 100644
index 0000000..821ca21
--- /dev/null
+++ b/data/rygel-gstlaunch.conf
@@ -0,0 +1,15 @@
+[audiotest]
+title=Audiotestsrc
+mime=audio/x-wav
+launch=audiotestsrc ! wavenc
+
+[videotest]
+title=Videotestsrc
+mime=video/mpeg
+launch=videotestsrc ! ffenc_mpeg2video ! mpegtsmux
+
+[videotestoverlay]
+title=Videotestsrc with timeoverlay
+mime=video/mpeg
+launch=videotestsrc ! timeoverlay ! ffenc_mpeg2video ! mpegtsmux
+
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
index d445987..707d77f 100644
--- a/src/plugins/Makefile.am
+++ b/src/plugins/Makefile.am
@@ -18,10 +18,15 @@ if BUILD_EXTERNAL_PLUGIN
 EXTERNAL_PLUGIN = external
 endif
 
+if BUILD_GSTLAUNCH_PLUGIN
+GSTLAUNCH_PLUGIN = gstlaunch
+endif
+
 SUBDIRS = $(TEST_PLUGIN) \
 	  $(TRACKER_PLUGIN) \
 	  $(MEDIATHEK_PLUGIN) \
 	  $(MEDIA_EXPORT_PLUGIN) \
-	  $(EXTERNAL_PLUGIN)
+	  $(EXTERNAL_PLUGIN) \
+	  $(GSTLAUNCH_PLUGIN)
 
 MAINTAINERCLEANFILES = Makefile.in
diff --git a/src/plugins/gstlaunch/Makefile.am b/src/plugins/gstlaunch/Makefile.am
new file mode 100644
index 0000000..95eea5d
--- /dev/null
+++ b/src/plugins/gstlaunch/Makefile.am
@@ -0,0 +1,31 @@
+plugindir = $(libdir)/rygel-1.0
+
+plugin_LTLIBRARIES = librygel-gstlaunch.la
+
+AM_CFLAGS = $(LIBGUPNP_CFLAGS) \
+		$(LIBGUPNP_AV_CFLAGS) \
+		$(LIBDBUS_GLIB_CFLAGS) \
+		$(GEE_CFLAGS) \
+		$(LIBGSTREAMER_CFLAGS) \
+		$(top_srcdir)/src/rygel -DDATA_DIR='"$(datadir)"' \
+		-DSYS_CONFIG_DIR='"$(sysconfdir)"'
+
+librygel_gstlaunch_la_SOURCES = rygel-gstlaunch-plugin.vala \
+				rygel-gstlaunch-root-container.vala \
+				rygel-gstlaunch-content-dir.vala \
+				rygel-gstlaunch-item.vala
+
+librygel_gstlaunch_la_VALAFLAGS = --vapidir=$(top_srcdir)/src/rygel \
+			     --pkg rygel-1.0 --pkg cstuff --pkg gconf-2.0 \
+			     --pkg gupnp-1.0 --pkg gupnp-av-1.0 \
+			     --pkg dbus-glib-1 --pkg gee-1.0 --pkg gstreamer-0.10
+
+librygel_gstlaunch_la_LIBADD = $(LIBGUPNP_LIBS) \
+     			       $(LIBGUPNP_AV_LIBS) \
+     			       $(LIBDBUS_GLIB_LIBS) \
+     			       $(LIBGSTREAMER_LIBS) \
+     			       $(GEE_LIBS)
+
+librygel_gstlaunch_la_LDFLAGS = -shared -fPIC -module -avoid-version
+
+MAINTAINERCLEANFILES = Makefile.in
diff --git a/src/plugins/gstlaunch/rygel-gstlaunch-content-dir.vala b/src/plugins/gstlaunch/rygel-gstlaunch-content-dir.vala
new file mode 100644
index 0000000..015f1ad
--- /dev/null
+++ b/src/plugins/gstlaunch/rygel-gstlaunch-content-dir.vala
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2009 Thijs Vermeir <thijsvermeir gmail com>
+ *
+ * Author: Thijs Vermeir <thijsvermeir 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 Rygel;
+using GUPnP;
+using Gee;
+
+public class Rygel.GstLaunchContentDir : ContentDirectory {
+    /* Pubic methods */
+    public override MediaContainer? create_root_container () {
+        string friendly_name = this.root_device.get_friendly_name ();
+        return new GstLaunchRootContainer (friendly_name);
+    }
+}
+
diff --git a/src/plugins/gstlaunch/rygel-gstlaunch-item.vala b/src/plugins/gstlaunch/rygel-gstlaunch-item.vala
new file mode 100644
index 0000000..ba515c6
--- /dev/null
+++ b/src/plugins/gstlaunch/rygel-gstlaunch-item.vala
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2009 Thijs Vermeir <thijsvermeir gmail com>
+ *
+ * Author: Thijs Vermeir <thijsvermeir 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 Rygel;
+using GUPnP;
+using Gee;
+using Gst;
+
+/**
+ * Represents Test audio item.
+ */
+public class Rygel.GstLaunchItem : Rygel.MediaItem {
+    string launch_line;
+
+    public GstLaunchItem (string         id,
+                          MediaContainer parent,
+                          string         title,
+                          string         mime_type,
+                          string         launch_line) {
+        base (id,
+              parent,
+              title,
+              (mime_type.has_prefix ("audio") ? MediaItem.AUDIO_CLASS : MediaItem.VIDEO_CLASS));
+        this.mime_type = mime_type;
+        this.launch_line = launch_line;
+    }
+
+    public override Element? create_stream_source () {
+        try {
+          return Gst.parse_bin_from_description (this.launch_line, true);
+        } catch (Error err) {
+          warning ("parse launchline failed: %s", err.message);
+          return null;
+        }
+    }
+}
+
diff --git a/src/plugins/gstlaunch/rygel-gstlaunch-plugin.vala b/src/plugins/gstlaunch/rygel-gstlaunch-plugin.vala
new file mode 100644
index 0000000..cd11805
--- /dev/null
+++ b/src/plugins/gstlaunch/rygel-gstlaunch-plugin.vala
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2009 Thijs Vermeir <thijsvermeir gmail com>
+ *
+ * Author: Thijs Vermeir <thijsvermeir 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 Rygel;
+using Gee;
+using CStuff;
+
+[ModuleInit]
+public void module_init (PluginLoader loader) {
+    Plugin plugin = new Plugin.MediaServer ("GstLaunch", "Gst Launch");
+
+    var resource_info = new ResourceInfo (ContentDirectory.UPNP_ID,
+                                          ContentDirectory.UPNP_TYPE,
+                                          ContentDirectory.DESCRIPTION_PATH,
+                                          typeof (GstLaunchContentDir));
+
+    plugin.add_resource (resource_info);
+    loader.add_plugin (plugin);
+}
+
diff --git a/src/plugins/gstlaunch/rygel-gstlaunch-root-container.vala b/src/plugins/gstlaunch/rygel-gstlaunch-root-container.vala
new file mode 100644
index 0000000..1a9c9f8
--- /dev/null
+++ b/src/plugins/gstlaunch/rygel-gstlaunch-root-container.vala
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2009 Thijs Vermeir <thijsvermeir gmail com>
+ *
+ * Author: Thijs Vermeir <thijsvermeir 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.
+ */
+
+/*
+ * Copyright (C) 2009 Thijs Vermeir <thijsvermeir gmail com>
+ *
+ * Author: Thijs Vermeir <thijsvermeir 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 Rygel;
+using GUPnP;
+using Gee;
+using Gst;
+using CStuff;
+
+/**
+ * Represents the root container for GstLaunch content hierarchy.
+ */
+public class Rygel.GstLaunchRootContainer : MediaContainer {
+    static const string GSTLAUNCH_FILE = "rygel-gstlaunch.conf";
+    ArrayList<MediaItem> items;
+    KeyFile key_file;
+
+    public GstLaunchRootContainer (string title) {
+        base.root (title, 0);
+
+        this.items = new ArrayList<MediaItem> ();
+
+        try {
+          load_key_file ();
+          parse_key_file ();
+        } catch (Error err) {
+          debug ("GstLaunch init failed: %s", err.message);
+        }
+
+        this.child_count = this.items.size;
+    }
+
+    void load_key_file () throws Error {
+      this.key_file = new KeyFile ();
+
+      var dirs = new string[2];
+      dirs[0] = Environment.get_user_config_dir ();
+      dirs[1] = BuildConfig.SYS_CONFIG_DIR;
+
+      string path;
+      this.key_file.load_from_dirs (GSTLAUNCH_FILE,
+                                    dirs,
+                                    out path,
+                                    KeyFileFlags.KEEP_COMMENTS |
+                                    KeyFileFlags.KEEP_TRANSLATIONS);
+      debug ("Loaded gstlaunch configuration from file '%s'", path);
+    }
+
+    void parse_key_file () throws Error {
+      var items = this.key_file.get_groups ();
+      foreach (string item in items) {
+        debug ("found item: %s", item);
+        string title = this.key_file.get_string (item, "title");
+        string mime_type = this.key_file.get_string (item, "mime");
+        string launch_line = this.key_file.get_string (item, "launch");
+
+        this.items.add (new GstLaunchItem (item, this, title, mime_type, launch_line));
+      }
+    }
+
+    public override void get_children (uint               offset,
+                                       uint               max_count,
+                                       Cancellable?       cancellable,
+                                       AsyncReadyCallback callback) {
+        uint stop = offset + max_count;
+
+        stop = stop.clamp (0, this.child_count);
+        var children = this.items.slice ((int) offset, (int) stop);
+
+        var res = new Rygel.SimpleAsyncResult<Gee.List<MediaObject>>
+                                            (this,
+                                             callback);
+        res.data = children;
+        res.complete_in_idle ();
+    }
+
+    public override Gee.List<MediaObject>? get_children_finish (
+                                                         AsyncResult res)
+                                                         throws GLib.Error {
+        var simple_res = (Rygel.SimpleAsyncResult<Gee.List<MediaObject>>) res;
+        return simple_res.data;
+    }
+
+    public override void find_object (string             id,
+                                      Cancellable?       cancellable,
+                                      AsyncReadyCallback callback) {
+        var res = new Rygel.SimpleAsyncResult<string> (this, callback);
+
+        res.data = id;
+        res.complete_in_idle ();
+    }
+
+    public override MediaObject? find_object_finish (AsyncResult res)
+                                                     throws Error {
+        MediaItem item = null;
+        var id = ((Rygel.SimpleAsyncResult<string>) res).data;
+
+        foreach (MediaItem tmp in this.items) {
+            if (id == tmp.id) {
+                item = tmp;
+
+                break;
+            }
+        }
+
+        return item;
+    }
+}
+
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