curl: 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/curl/gstcurl.c

@@ -20,55 +20,25 @@
 #include <config.h>
 #endif
 
-#include <gst/gst-i18n-plugin.h>
+#include "gstcurlelements.h"
 
-#include "gstcurlbasesink.h"
-#include "gstcurltlssink.h"
-#include "gstcurlhttpsink.h"
-#include "gstcurlfilesink.h"
-#include "gstcurlftpsink.h"
-#include "gstcurlsmtpsink.h"
-#ifdef HAVE_SSH2
-#include "gstcurlsftpsink.h"
-#endif
-#include "gstcurlhttpsrc.h"
 
 static gboolean
 plugin_init (GstPlugin * plugin)
 {
-#ifdef ENABLE_NLS
-  GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
-      LOCALEDIR);
-  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
-  bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
-#endif /* ENABLE_NLS */
+  gboolean ret = FALSE;
 
-  if (!gst_element_register (plugin, "curlhttpsink", GST_RANK_NONE,
-          GST_TYPE_CURL_HTTP_SINK))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "curlfilesink", GST_RANK_NONE,
-          GST_TYPE_CURL_FILE_SINK))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "curlftpsink", GST_RANK_NONE,
-          GST_TYPE_CURL_FTP_SINK))
-    return FALSE;
-
-  if (!gst_element_register (plugin, "curlsmtpsink", GST_RANK_NONE,
-          GST_TYPE_CURL_SMTP_SINK))
-    return FALSE;
+  ret |= GST_ELEMENT_REGISTER (curlhttpsink, plugin);
+  ret |= GST_ELEMENT_REGISTER (curlfilesink, plugin);
+  ret |= GST_ELEMENT_REGISTER (curlftpsink, plugin);
+  ret |= GST_ELEMENT_REGISTER (curlsmtpsink, plugin);
 
 #ifdef HAVE_SSH2
-  if (!gst_element_register (plugin, "curlsftpsink", GST_RANK_NONE,
-          GST_TYPE_CURL_SFTP_SINK))
-    return FALSE;
+  ret |= GST_ELEMENT_REGISTER (curlsftpsink, plugin);
 #endif
-  if (!gst_element_register (plugin, "curlhttpsrc", GST_RANK_SECONDARY,
-          GST_TYPE_CURLHTTPSRC))
-    return FALSE;
+  ret |= GST_ELEMENT_REGISTER (curlhttpsrc, plugin);
 
-  return TRUE;
+  return ret;
 }
 
 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,

ext/curl/gstcurlelement.c

@@ -0,0 +1,41 @@
+/* GStreamer
+ * Copyright (C) 2011 Axis Communications <dev-gstreamer@axis.com>
+ *
+ * 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 <gst/gst-i18n-plugin.h>
+
+#include "gstcurlelements.h"
+
+void
+curl_element_init (GstPlugin * plugin)
+{
+  static gsize res = FALSE;
+
+  if (g_once_init_enter (&res)) {
+#ifdef ENABLE_NLS
+    GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
+        LOCALEDIR);
+    bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+    bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+#endif /* ENABLE_NLS */
+    g_once_init_leave (&res, TRUE);
+  }
+}

ext/curl/gstcurlelements.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_CURL_ELEMENTS_H__
+#define __GST_CURL_ELEMENTS_H__
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gst/gst.h>
+
+void curl_element_init (GstPlugin * plugin);
+
+GST_ELEMENT_REGISTER_DECLARE (curlfilesink);
+GST_ELEMENT_REGISTER_DECLARE (curlftpsink);
+GST_ELEMENT_REGISTER_DECLARE (curlhttpsink);
+GST_ELEMENT_REGISTER_DECLARE (curlhttpsrc);
+GST_ELEMENT_REGISTER_DECLARE (curlsftpsink);
+GST_ELEMENT_REGISTER_DECLARE (curlsmtpsink);
+
+#endif /* __GST_CURL_ELEMENT_H__ */

ext/curl/gstcurlfilesink.c

@@ -59,6 +59,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+#include "gstcurlelements.h"
 #include "gstcurlbasesink.h"
 #include "gstcurlfilesink.h"
 
@@ -94,6 +95,8 @@ static gboolean gst_curl_file_sink_prepare_transfer (GstCurlBaseSink *
 
 #define gst_curl_file_sink_parent_class parent_class
 G_DEFINE_TYPE (GstCurlFileSink, gst_curl_file_sink, GST_TYPE_CURL_BASE_SINK);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (curlfilesink, "curlfilesink",
+    GST_RANK_NONE, GST_TYPE_CURL_FILE_SINK, curl_element_init (plugin));
 
 static void
 gst_curl_file_sink_class_init (GstCurlFileSinkClass * klass)

ext/curl/gstcurlftpsink.c

@@ -62,6 +62,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+#include "gstcurlelements.h"
 #include "gstcurltlssink.h"
 #include "gstcurlftpsink.h"
 
@@ -101,6 +102,8 @@ static gboolean set_ftp_dynamic_options_unlocked
 
 #define gst_curl_ftp_sink_parent_class parent_class
 G_DEFINE_TYPE (GstCurlFtpSink, gst_curl_ftp_sink, GST_TYPE_CURL_TLS_SINK);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (curlftpsink, "curlftpsink",
+    GST_RANK_NONE, GST_TYPE_CURL_FTP_SINK, curl_element_init (plugin));
 
 static void
 gst_curl_ftp_sink_class_init (GstCurlFtpSinkClass * klass)

ext/curl/gstcurlhttpsink.c

@@ -64,6 +64,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+#include "gstcurlelements.h"
 #include "gstcurltlssink.h"
 #include "gstcurlhttpsink.h"
 
@@ -111,7 +112,8 @@ static void gst_curl_http_sink_transfer_prepare_poll_wait
 
 #define gst_curl_http_sink_parent_class parent_class
 G_DEFINE_TYPE (GstCurlHttpSink, gst_curl_http_sink, GST_TYPE_CURL_TLS_SINK);
-
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (curlhttpsink, "curlhttpsink",
+    GST_RANK_NONE, GST_TYPE_CURL_HTTP_SINK, curl_element_init (plugin));
 /* private functions */
 
 static gboolean proxy_setup (GstCurlBaseSink * bcsink);

ext/curl/gstcurlhttpsrc.c

@@ -118,6 +118,7 @@
 
 #include <gst/gst-i18n-plugin.h>
 
+#include "gstcurlelements.h"
 #include "gstcurlhttpsrc.h"
 #include "gstcurlqueue.h"
 #include "gstcurldefaults.h"
@@ -254,6 +255,8 @@ gst_curl_http_version_get_type (void)
 G_DEFINE_TYPE_WITH_CODE (GstCurlHttpSrc, gst_curl_http_src, GST_TYPE_PUSH_SRC,
     G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER,
         gst_curl_http_src_uri_handler_init));
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (curlhttpsrc, "curlhttpsrc",
+    GST_RANK_SECONDARY, GST_TYPE_CURLHTTPSRC, curl_element_init (plugin));
 
 static void
 gst_curl_http_src_class_init (GstCurlHttpSrcClass * klass)

ext/curl/gstcurlsftpsink.c

@@ -44,6 +44,7 @@
 #include "config.h"
 #endif
 
+#include "gstcurlelements.h"
 #include "gstcurlsshsink.h"
 #include "gstcurlsftpsink.h"
 
@@ -92,6 +93,8 @@ static gboolean set_sftp_dynamic_options_unlocked (GstCurlBaseSink *
 
 #define gst_curl_sftp_sink_parent_class parent_class
 G_DEFINE_TYPE (GstCurlSftpSink, gst_curl_sftp_sink, GST_TYPE_CURL_SSH_SINK);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (curlsftpsink, "curlsftpsink",
+    GST_RANK_NONE, GST_TYPE_CURL_SFTP_SINK, curl_element_init (plugin));
 
 static void
 gst_curl_sftp_sink_class_init (GstCurlSftpSinkClass * klass)

ext/curl/gstcurlsmtpsink.c

@@ -72,6 +72,7 @@
 #include <sys/stat.h>
 #include <fcntl.h>
 
+#include "gstcurlelements.h"
 #include "gstcurltlssink.h"
 #include "gstcurlsmtpsink.h"
 
@@ -134,6 +135,8 @@ static size_t transfer_payload_headers (GstCurlSmtpSink * sink, void *curl_ptr,
 
 #define gst_curl_smtp_sink_parent_class parent_class
 G_DEFINE_TYPE (GstCurlSmtpSink, gst_curl_smtp_sink, GST_TYPE_CURL_TLS_SINK);
+GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (curlsmtpsink, "curlsmtpsink",
+    GST_RANK_NONE, GST_TYPE_CURL_SMTP_SINK, curl_element_init (plugin));
 
 static void
 gst_curl_smtp_sink_notify_transfer_end_unlocked (GstCurlSmtpSink * sink)

ext/curl/meson.build

@@ -1,6 +1,7 @@
 curl_sources = [
   'gstcurlbasesink.c',
   'gstcurl.c',
+  'gstcurlelement.c',
   'gstcurlfilesink.c',
   'gstcurlftpsink.c',
   'gstcurlhttpsink.c',