kate: allow per feature registration

Split plugin into features including
dynamic types which can be indiviually
registered during a static build.

More details here:

https://gitlab.freedesktop.org/gstreamer/gst-build/-/merge_requests/199
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/661

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2038>

ext/kate/gstkate.c

@@ -47,67 +47,23 @@
 #include "config.h"
 #endif
 
-#include <string.h>
+#include "gstkateelements.h"
 
-#include <gst/gst.h>
-
-#include "gstkate.h"
-#include "gstkatedec.h"
-#include "gstkateenc.h"
-#include "gstkateparse.h"
-#include "gstkatetag.h"
-
-#undef HAVE_TIGER
-#ifdef HAVE_TIGER
-#include "gstkatetiger.h"
-#endif
-
-GST_DEBUG_CATEGORY (gst_katedec_debug);
-GST_DEBUG_CATEGORY (gst_kateenc_debug);
-GST_DEBUG_CATEGORY (gst_kateparse_debug);
-GST_DEBUG_CATEGORY (gst_katetag_debug);
-GST_DEBUG_CATEGORY (gst_kateutil_debug);
-#ifdef HAVE_TIGER
-GST_DEBUG_CATEGORY (gst_katetiger_debug);
-#endif
 
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-  GST_DEBUG_CATEGORY_INIT (gst_katedec_debug, "katedec", 0, "Kate decoder");
+  gboolean ret = FALSE;
-  GST_DEBUG_CATEGORY_INIT (gst_kateenc_debug, "kateenc", 0, "Kate encoder");
+
-  GST_DEBUG_CATEGORY_INIT (gst_kateparse_debug, "kateparse", 0, "Kate parser");
+  ret |= GST_ELEMENT_REGISTER (katedec, plugin);
-  GST_DEBUG_CATEGORY_INIT (gst_katetag_debug, "katetag", 0, "Kate tagger");
+  ret |= GST_ELEMENT_REGISTER (kateenc, plugin);
-  GST_DEBUG_CATEGORY_INIT (gst_kateutil_debug, "kateutil", 0,
+  ret |= GST_ELEMENT_REGISTER (kateparse, plugin);
-      "Kate utility functions");
+  ret |= GST_ELEMENT_REGISTER (katetag, plugin);
 #ifdef HAVE_TIGER
-  GST_DEBUG_CATEGORY_INIT (gst_katetiger_debug, "tiger", 0,
+  ret |= GST_ELEMENT_REGISTER (tiger, plugin);
-      "Kate Tiger renderer");
 #endif
 
-  if (!gst_element_register (plugin, "katedec", GST_RANK_PRIMARY,
+  return ret;
-          GST_TYPE_KATE_DEC))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "kateenc", GST_RANK_NONE,
-          GST_TYPE_KATE_ENC))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "kateparse", GST_RANK_NONE,
-          GST_TYPE_KATE_PARSE))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "katetag", GST_RANK_NONE,
-          GST_TYPE_KATE_TAG))
-    return FALSE;
-
-#ifdef HAVE_TIGER
-  if (!gst_element_register (plugin, "tiger", GST_RANK_PRIMARY,
-          GST_TYPE_KATE_TIGER))
-    return FALSE;
-#endif
-
-  return TRUE;
 }
 
 /* this is the structure that gstreamer looks for to register plugins

ext/kate/gstkatedec.c

@@ -79,7 +79,7 @@
 
 #include <gst/gst.h>
 
-#include "gstkate.h"
+#include "gstkateelements.h"
 #include "gstkatespu.h"
 #include "gstkatedec.h"
 
@@ -115,8 +115,15 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
         GST_KATE_SPU_MIME_TYPE)
     );
 
+GST_DEBUG_CATEGORY (gst_katedec_debug);
+
 #define gst_kate_dec_parent_class parent_class
 G_DEFINE_TYPE (GstKateDec, gst_kate_dec, GST_TYPE_ELEMENT);
+#define _do_init \
+  kate_element_init (plugin); \
+  GST_DEBUG_CATEGORY_INIT (gst_katedec_debug, "katedec", 0, "Kate decoder");
+GST_ELEMENT_REGISTER_DEFINE (katedec, "katedec", GST_RANK_PRIMARY,
+    GST_TYPE_KATE_DEC);
 
 static void gst_kate_dec_set_property (GObject * object, guint prop_id,
     const GValue * value, GParamSpec * pspec);

ext/kate/gstkateelement.c

@@ -0,0 +1,72 @@
+/*
+ * GStreamer
+ * Copyright 2005 Thomas Vander Stichele <thomas@apestaart.org>
+ * Copyright 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * Copyright 2008 Vincent Penquerc'h <ogg.k.ogg.k@googlemail.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Alternatively, the contents of this file may be used under the
+ * GNU Lesser General Public License Version 2.1 (the "LGPL"), in
+ * which case the following provisions apply instead of the ones
+ * mentioned above:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include <gst/gst.h>
+
+#include "gstkateelements.h"
+
+#undef HAVE_TIGER
+#ifdef HAVE_TIGER
+#include "gstkatetiger.h"
+#endif
+
+GST_DEBUG_CATEGORY (gst_kateutil_debug);
+
+void
+kate_element_init (GstPlugin * plugin)
+{
+  static gsize res = FALSE;
+  if (g_once_init_enter (&res)) {
+    GST_DEBUG_CATEGORY_INIT (gst_kateutil_debug, "kateutil", 0,
+        "Kate utility functions");
+    g_once_init_leave (&res, TRUE);
+  }
+}

ext/kate/gstkateelements.h

@@ -41,15 +41,22 @@
  * Boston, MA 02110-1301, USA.
  */
 
-#ifndef __GST_KATE_H__
+#ifndef __GST_KATE_ELEMENT_H__
-#define __GST_KATE_H__
+#define __GST_KATE_ELEMENT_H__
 
 #include <gst/gst.h>
 
 G_BEGIN_DECLS
 
-/* nothing here any more */
+void kate_element_init (GstPlugin * plugin);
+
+GST_ELEMENT_REGISTER_DECLARE (katedec);
+GST_ELEMENT_REGISTER_DECLARE (kateenc);
+GST_ELEMENT_REGISTER_DECLARE (kateparse);
+GST_ELEMENT_REGISTER_DECLARE (tiger);
+GST_ELEMENT_REGISTER_DECLARE (katetag);
+
 
 G_END_DECLS
 
-#endif /* __GST_KATE_H__ */
+#endif /* __GST_KATE_ELEMENT_H__ */

ext/kate/gstkateenc.c

@@ -83,7 +83,7 @@
 #include <gst/gsttagsetter.h>
 #include <gst/tag/tag.h>
 
-#include "gstkate.h"
+#include "gstkateelements.h"
 #include "gstkateutil.h"
 #include "gstkatespu.h"
 #include "gstkateenc.h"
@@ -144,9 +144,16 @@ static gboolean gst_kate_enc_sink_event (GstPad * pad, GstObject * parent,
 static gboolean gst_kate_enc_source_query (GstPad * pad, GstObject * parent,
     GstQuery * query);
 
+GST_DEBUG_CATEGORY (gst_kateenc_debug);
+
 #define gst_kate_enc_parent_class parent_class
 G_DEFINE_TYPE_WITH_CODE (GstKateEnc, gst_kate_enc, GST_TYPE_ELEMENT,
     G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
+#define _do_init \
+  kate_element_init (plugin); \
+  GST_DEBUG_CATEGORY_INIT (gst_kateenc_debug, "kateenc", 0, "Kate encoder");
+GST_ELEMENT_REGISTER_DEFINE (kateenc, "kateenc", GST_RANK_NONE,
+    GST_TYPE_KATE_ENC);
 
 /* initialize the plugin's class */
 static void

ext/kate/gstkateparse.c

@@ -57,7 +57,7 @@
 #  include "config.h"
 #endif
 
-#include "gstkate.h"
+#include "gstkateelements.h"
 #include "gstkateutil.h"
 #include "gstkateparse.h"
 
@@ -78,8 +78,15 @@ static GstStaticPadTemplate gst_kate_parse_src_factory =
     GST_STATIC_CAPS ("subtitle/x-kate; application/x-kate")
     );
 
+GST_DEBUG_CATEGORY (gst_kateparse_debug);
+
 #define gst_kate_parse_parent_class parent_class
 G_DEFINE_TYPE (GstKateParse, gst_kate_parse, GST_TYPE_ELEMENT);
+#define _do_init \
+  kate_element_init (plugin); \
+  GST_DEBUG_CATEGORY_INIT (gst_kateparse_debug, "kateparse", 0, "Kate parser");
+GST_ELEMENT_REGISTER_DEFINE (kateparse, "kateparse", GST_RANK_NONE,
+    GST_TYPE_KATE_PARSE);
 
 static GstFlowReturn gst_kate_parse_chain (GstPad * pad, GstObject * parent,
     GstBuffer * buffer);

ext/kate/gstkatetag.c

@@ -69,6 +69,7 @@
 
 #include <kate/kate.h>
 
+#include "gstkateelements.h"
 #include "gstkatetag.h"
 
 
@@ -92,9 +93,15 @@ static void gst_kate_tag_get_property (GObject * object, guint prop_id,
     GValue * value, GParamSpec * pspec);
 static void gst_kate_tag_dispose (GObject * object);
 
+GST_DEBUG_CATEGORY (gst_katetag_debug);
 #define gst_kate_tag_parent_class parent_class
 G_DEFINE_TYPE_WITH_CODE (GstKateTag, gst_kate_tag, GST_TYPE_KATE_PARSE,
     G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL));
+#define _do_init \
+  kate_element_init (plugin); \
+  GST_DEBUG_CATEGORY_INIT (gst_katetag_debug, "katetag", 0, "Kate tagger");
+GST_ELEMENT_REGISTER_DEFINE (katetag, "katetag", GST_RANK_NONE,
+    GST_TYPE_KATE_TAG);
 
 static void
 gst_kate_tag_class_init (GstKateTagClass * klass)

ext/kate/gstkatetiger.c

@@ -80,7 +80,7 @@
 #include <gst/glib-compat-private.h>
 #include <gst/video/video.h>
 
-#include "gstkate.h"
+#include "gstkateelements.h"
 #include "gstkatetiger.h"
 
 GST_DEBUG_CATEGORY_EXTERN (gst_katetiger_debug);
@@ -174,7 +174,15 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
     GST_PAD_ALWAYS,
     GST_STATIC_CAPS (TIGER_VIDEO_CAPS));
 
+GST_DEBUG_CATEGORY (gst_katetiger_debug);
+
 GST_BOILERPLATE (GstKateTiger, gst_kate_tiger, GstElement, GST_TYPE_ELEMENT);
+#define _do_init \
+  kate_element_init (plugin); \
+  GST_DEBUG_CATEGORY_INIT (gst_katetiger_debug, "tiger", 0, \
+        "Kate Tiger renderer");
+GST_ELEMENT_REGISTER_DEFINE (tiger, "tiger", GST_RANK_NONE,
+    GST_TYPE_KATE_TIGER);
 
 static GType
 gst_kate_tiger_font_effect_get_type (void)

ext/kate/gstkateutil.c

@@ -28,7 +28,6 @@
 #include <tiger/tiger.h>
 #endif
 #include <gst/tag/tag.h>
-#include "gstkate.h"
 #include "gstkateutil.h"
 
 GST_DEBUG_CATEGORY_EXTERN (gst_kateutil_debug);

ext/kate/meson.build

@@ -1,5 +1,6 @@
 kate_sources = [
   'gstkate.c',
+  'gstkateelement.c',
   'gstkatedec.c',
   'gstkateenc.c',
   'gstkateparse.c',