srt: 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/srt/gstsrt.c

@@ -22,13 +22,10 @@
 #include "config.h"
 #endif
 
+#include "gstsrtelements.h"
 #include "gstsrtsrc.h"
 #include "gstsrtsink.h"
 
-GST_DEBUG_CATEGORY_STATIC (gst_debug_srtlib);
-GST_DEBUG_CATEGORY (gst_debug_srtobject);
-#define GST_CAT_DEFAULT gst_debug_srtobject
-
 #ifndef GST_REMOVE_DEPRECATED
 
 #define GST_TYPE_SRT_CLIENT_SRC gst_srt_client_src_get_type()
@@ -55,9 +52,20 @@ static GType gst_srt_client_sink_get_type (void);
 static GType gst_srt_server_sink_get_type (void);
 
 G_DEFINE_TYPE (GstSRTClientSrc, gst_srt_client_src, GST_TYPE_SRT_SRC);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (srtclientsrc, "srtclientsrc",
+    GST_RANK_NONE, GST_TYPE_SRT_CLIENT_SRC, srt_element_init (plugin));
+
 G_DEFINE_TYPE (GstSRTServerSrc, gst_srt_server_src, GST_TYPE_SRT_SRC);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (srtserversrc, "srtserversrc",
+    GST_RANK_NONE, GST_TYPE_SRT_SERVER_SRC, srt_element_init (plugin));
+
 G_DEFINE_TYPE (GstSRTClientSink, gst_srt_client_sink, GST_TYPE_SRT_SINK);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (srtclientsink, "srtclientsink",
+    GST_RANK_NONE, GST_TYPE_SRT_CLIENT_SINK, srt_element_init (plugin));
+
 G_DEFINE_TYPE (GstSRTServerSink, gst_srt_server_sink, GST_TYPE_SRT_SINK);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (srtserversink, "srtserversink",
+    GST_RANK_NONE, GST_TYPE_SRT_SERVER_SINK, srt_element_init (plugin));
 
 static void
 gst_srt_client_src_init (GstSRTClientSrc * src)
@@ -100,92 +108,3 @@ gst_srt_server_sink_class_init (GstSRTServerSinkClass * klass)
 }
 
 #endif
-
-#ifndef GST_DISABLE_GST_DEBUG
-static void
-gst_srt_log_handler (void *opaque, int level, const char *file, int line,
-    const char *area, const char *message)
-{
-  GstDebugLevel gst_level;
-
-  switch (level) {
-    case LOG_CRIT:
-      gst_level = GST_LEVEL_ERROR;
-      break;
-
-    case LOG_ERR:
-      gst_level = GST_LEVEL_WARNING;
-      break;
-
-    case LOG_WARNING:
-      gst_level = GST_LEVEL_INFO;
-      break;
-
-    case LOG_NOTICE:
-      gst_level = GST_LEVEL_DEBUG;
-      break;
-
-    case LOG_DEBUG:
-      gst_level = GST_LEVEL_LOG;
-      break;
-
-    default:
-      gst_level = GST_LEVEL_FIXME;
-      break;
-  }
-
-  if (G_UNLIKELY (gst_level <= _gst_debug_min)) {
-    gst_debug_log (gst_debug_srtlib, gst_level, file, area, line, NULL, "%s",
-        message);
-  }
-}
-#endif
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
-  GST_DEBUG_CATEGORY_INIT (gst_debug_srtobject, "srtobject", 0, "SRT Object");
-  GST_DEBUG_CATEGORY_INIT (gst_debug_srtlib, "srtlib", 0, "SRT Library");
-
-#ifndef GST_DISABLE_GST_DEBUG
-  srt_setloghandler (NULL, gst_srt_log_handler);
-  srt_setlogflags (SRT_LOGF_DISABLE_TIME | SRT_LOGF_DISABLE_THREADNAME |
-      SRT_LOGF_DISABLE_SEVERITY | SRT_LOGF_DISABLE_EOL);
-  srt_setloglevel (LOG_DEBUG);
-#endif
-
-  if (!gst_element_register (plugin, "srtsrc", GST_RANK_PRIMARY,
-          GST_TYPE_SRT_SRC))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "srtsink", GST_RANK_PRIMARY,
-          GST_TYPE_SRT_SINK))
-    return FALSE;
-
-  /* deprecated */
-#ifndef GST_REMOVE_DEPRECATED
-  if (!gst_element_register (plugin, "srtclientsrc", GST_RANK_NONE,
-          GST_TYPE_SRT_CLIENT_SRC))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "srtserversrc", GST_RANK_NONE,
-          GST_TYPE_SRT_SERVER_SRC))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "srtclientsink", GST_RANK_NONE,
-          GST_TYPE_SRT_CLIENT_SINK))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "srtserversink", GST_RANK_NONE,
-          GST_TYPE_SRT_SERVER_SINK))
-    return FALSE;
-#endif
-
-  return TRUE;
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
-    GST_VERSION_MINOR,
-    srt,
-    "transfer data via SRT",
-    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);

ext/srt/gstsrtelement.c

@@ -0,0 +1,90 @@
+/* GStreamer
+ * Copyright (C) 2017, Collabora Ltd.
+ *   Author:Justin Kim <justin.kim@collabora.com>
+ * Copyright (C) <2020> The GStreamer Contributors.
+ *
+ * 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 "gstsrtelements.h"
+#include <srt/srt.h>
+
+
+GST_DEBUG_CATEGORY_STATIC (gst_debug_srtlib);
+GST_DEBUG_CATEGORY (gst_debug_srtobject);
+#define GST_CAT_DEFAULT gst_debug_srtobject
+
+#ifndef GST_DISABLE_GST_DEBUG
+static void
+gst_srt_log_handler (void *opaque, int level, const char *file, int line,
+    const char *area, const char *message)
+{
+  GstDebugLevel gst_level;
+
+  switch (level) {
+    case LOG_CRIT:
+      gst_level = GST_LEVEL_ERROR;
+      break;
+
+    case LOG_ERR:
+      gst_level = GST_LEVEL_WARNING;
+      break;
+
+    case LOG_WARNING:
+      gst_level = GST_LEVEL_INFO;
+      break;
+
+    case LOG_NOTICE:
+      gst_level = GST_LEVEL_DEBUG;
+      break;
+
+    case LOG_DEBUG:
+      gst_level = GST_LEVEL_LOG;
+      break;
+
+    default:
+      gst_level = GST_LEVEL_FIXME;
+      break;
+  }
+
+  if (G_UNLIKELY (gst_level <= _gst_debug_min)) {
+    gst_debug_log (gst_debug_srtlib, gst_level, file, area, line, NULL, "%s",
+        message);
+  }
+}
+#endif
+
+void
+srt_element_init (GstPlugin * plugin)
+{
+  static gsize res = FALSE;
+
+  if (g_once_init_enter (&res)) {
+    GST_DEBUG_CATEGORY_INIT (gst_debug_srtobject, "srtobject", 0, "SRT Object");
+    GST_DEBUG_CATEGORY_INIT (gst_debug_srtlib, "srtlib", 0, "SRT Library");
+#ifndef GST_DISABLE_GST_DEBUG
+    srt_setloghandler (NULL, gst_srt_log_handler);
+    srt_setlogflags (SRT_LOGF_DISABLE_TIME | SRT_LOGF_DISABLE_THREADNAME |
+        SRT_LOGF_DISABLE_SEVERITY | SRT_LOGF_DISABLE_EOL);
+    srt_setloglevel (LOG_DEBUG);
+#endif
+    g_once_init_leave (&res, TRUE);
+  }
+}

ext/srt/gstsrtelements.h

@@ -0,0 +1,39 @@
+/* GStreamer
+ * Copyright (C) <2020> The GStreamer Contributors.
+ *
+ * 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.
+ */
+
+
+#ifndef __GST_SRT_ELEMENTS_H__
+#define __GST_SRT_ELEMENTS_H__
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gst/gst.h>
+
+void srt_element_init (GstPlugin * plugin);
+
+GST_ELEMENT_REGISTER_DECLARE (srtclientsrc);
+GST_ELEMENT_REGISTER_DECLARE (srtserversrc);
+GST_ELEMENT_REGISTER_DECLARE (srtclientsink);
+GST_ELEMENT_REGISTER_DECLARE (srtserversink);
+GST_ELEMENT_REGISTER_DECLARE (srtsink);
+GST_ELEMENT_REGISTER_DECLARE (srtsrc);
+
+#endif /* __GST_SRT_ELEMENT_H__ */

ext/srt/gstsrtplugin.c

@@ -0,0 +1,52 @@
+/* GStreamer
+ * Copyright (C) 2017, Collabora Ltd.
+ *   Author:Justin Kim <justin.kim@collabora.com>
+ * Copyright (C) <2020> The GStreamer Contributors.
+ *
+ * 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 "gstsrtelements.h"
+
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  gboolean ret = FALSE;
+
+  ret |= GST_ELEMENT_REGISTER (srtsrc, plugin);
+  ret |= GST_ELEMENT_REGISTER (srtsink, plugin);
+
+  /* deprecated */
+#ifndef GST_REMOVE_DEPRECATED
+  ret |= GST_ELEMENT_REGISTER (srtclientsrc, plugin);
+  ret |= GST_ELEMENT_REGISTER (srtserversrc, plugin);
+  ret |= GST_ELEMENT_REGISTER (srtclientsink, plugin);
+  ret |= GST_ELEMENT_REGISTER (srtserversink, plugin);
+#endif
+
+  return ret;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    srt,
+    "transfer data via SRT",
+    plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);

ext/srt/gstsrtsink.c

@@ -42,6 +42,7 @@
 #include <config.h>
 #endif
 
+#include "gstsrtelements.h"
 #include "gstsrtsink.h"
 
 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
@@ -78,6 +79,8 @@ G_DEFINE_TYPE_WITH_CODE (GstSRTSink, gst_srt_sink,
     GST_TYPE_BASE_SINK,
     G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_srt_sink_uri_handler_init)
     GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "srtsink", 0, "SRT Sink"));
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (srtsink, "srtsink", GST_RANK_PRIMARY,
+    GST_TYPE_SRT_SINK, srt_element_init (plugin));
 
 static gboolean
 default_caller_connecting (GstSRTSink * self,

ext/srt/gstsrtsrc.c

@@ -45,6 +45,7 @@
 #include <config.h>
 #endif
 
+#include "gstsrtelements.h"
 #include "gstsrtsrc.h"
 
 static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
@@ -81,6 +82,8 @@ G_DEFINE_TYPE_WITH_CODE (GstSRTSrc, gst_srt_src,
     GST_TYPE_PUSH_SRC,
     G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_srt_src_uri_handler_init)
     GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "srtsrc", 0, "SRT Source"));
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (srtsrc, "srtsrc", GST_RANK_PRIMARY,
+    GST_TYPE_SRT_SRC, srt_element_init (plugin));
 
 static gboolean
 src_default_caller_connecting (GstSRTSrc * self,

ext/srt/meson.build

@@ -1,5 +1,7 @@
 srt_sources = [
   'gstsrt.c',
+  'gstsrtelement.c',
+  'gstsrtplugin.c',
   'gstsrtobject.c',
   'gstsrtsink.c',
   'gstsrtsrc.c'