ext/gio/gstgio.c: Remove nowadays unnecessary workaround for a crash.

Original commit message from CVS:
* ext/gio/gstgio.c: (plugin_init):
Remove nowadays unnecessary workaround for a crash.
* ext/gio/gstgiosink.c: (gst_gio_sink_finalize),
(gst_gio_sink_start), (gst_gio_sink_stop),
(gst_gio_sink_unlock_stop):
* ext/gio/gstgiosink.h:
* ext/gio/gstgiosrc.c: (gst_gio_src_finalize), (gst_gio_src_start),
(gst_gio_src_stop), (gst_gio_src_unlock_stop):
* ext/gio/gstgiosrc.h:
Make the finalize function safer, clean up everything that could stay
around.
Reset the cancellable instead of creating a new one after cancelling
some operation.
Don't store the GFile in the element, it's only necessary for creating
the streams.

ext/gio/gstgio.c

@@ -189,13 +189,6 @@ plugin_init (GstPlugin * plugin)
 
   GST_DEBUG_CATEGORY_INIT (gst_gio_debug, "gio", 0, "GIO elements");
 
-  /* FIXME: This is needed to prevent a crash.  Needs further investigation
-   * probably. */
-  if (g_vfs_get_default () == NULL) {
-    GST_WARNING ("Failed to initialize default VFS, not registering plugin");
-    return FALSE;
-  }
-
   /* FIXME: Rank is MARGINAL for now, should be at least SECONDARY+1 in the future
    * to replace gnomevfssink/src. For testing purposes PRIMARY+1 one makes sense
    * so it gets autoplugged and preferred over filesrc/sink. */

ext/gio/gstgiosink.c

@@ -135,12 +135,20 @@ gst_gio_sink_finalize (GObject * object)
 {
   GstGioSink *sink = GST_GIO_SINK (object);
 
+  if (sink->cancel) {
     g_object_unref (sink->cancel);
+    sink->cancel = NULL;
+  }
 
-  if (sink->file)
-    g_object_unref (sink->file);
+  if (sink->stream) {
+    g_object_unref (sink->stream);
+    sink->stream = NULL;
+  }
 
+  if (sink->location) {
     g_free (sink->location);
+    sink->location = NULL;
+  }
 
   GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
 }
@@ -186,6 +194,7 @@ static gboolean
 gst_gio_sink_start (GstBaseSink * base_sink)
 {
   GstGioSink *sink = GST_GIO_SINK (base_sink);
+  GFile *file;
   gboolean success;
   GError *err = NULL;
 
@@ -195,18 +204,20 @@ gst_gio_sink_start (GstBaseSink * base_sink)
     return FALSE;
   }
 
-  sink->file = g_file_new_for_uri (sink->location);
+  file = g_file_new_for_uri (sink->location);
 
-  if (sink->file == NULL) {
+  if (file == NULL) {
     GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_WRITE, (NULL),
         ("Malformed URI or protocol not supported (%s)", sink->location));
     return FALSE;
   }
 
   sink->stream =
-      g_file_create (sink->file, G_FILE_CREATE_FLAGS_NONE, sink->cancel, &err);
+      g_file_create (file, G_FILE_CREATE_FLAGS_NONE, sink->cancel, &err);
   success = (sink->stream != NULL);
 
+  g_object_unref (file);
+
   if (!success && !gst_gio_error (sink, "g_file_create", &err, NULL)) {
 
     /*if (GST_GIO_ERROR_MATCHES (err, EXISTS)) */
@@ -224,12 +235,8 @@ gst_gio_sink_start (GstBaseSink * base_sink)
     g_clear_error (&err);
   }
 
-  if (!success) {
-    g_object_unref (sink->file);
-    sink->file = NULL;
-
+  if (!success)
     return FALSE;
-  }
 
   sink->position = 0;
 
@@ -245,11 +252,6 @@ gst_gio_sink_stop (GstBaseSink * base_sink)
   gboolean success = TRUE;
   GError *err = NULL;
 
-  if (sink->file != NULL) {
-    g_object_unref (sink->file);
-    sink->file = NULL;
-  }
-
   if (sink->stream != NULL) {
     /* FIXME: In case that the call below would block, there is no one to
      * trigger the cancellation! */
@@ -289,10 +291,9 @@ gst_gio_sink_unlock_stop (GstBaseSink * base_sink)
 {
   GstGioSink *sink = GST_GIO_SINK (base_sink);
 
-  GST_LOG_OBJECT (sink, "restoring cancellable");
+  GST_LOG_OBJECT (sink, "resetting cancellable");
 
-  g_object_unref (sink->cancel);
-  sink->cancel = g_cancellable_new ();
+  g_cancellable_reset (sink->cancel);
 
   return TRUE;
 }

ext/gio/gstgiosink.h

@@ -53,7 +53,6 @@ struct _GstGioSink
 
   /*< private >*/
   GCancellable *cancel;
-  GFile *file;
   gchar *location;
   guint64 position;
   GFileOutputStream *stream;

ext/gio/gstgiosrc.c

@@ -128,12 +128,20 @@ gst_gio_src_finalize (GObject * object)
 {
   GstGioSrc *src = GST_GIO_SRC (object);
 
+  if (src->cancel) {
     g_object_unref (src->cancel);
+    src->cancel = NULL;
+  }
 
-  if (src->file)
-    g_object_unref (src->file);
+  if (src->stream) {
+    g_object_unref (src->stream);
+    src->stream = NULL;
+  }
 
+  if (src->location) {
     g_free (src->location);
+    src->location = NULL;
+  }
 
   GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
 }
@@ -179,6 +187,7 @@ static gboolean
 gst_gio_src_start (GstBaseSrc * base_src)
 {
   GstGioSrc *src = GST_GIO_SRC (base_src);
+  GFile *file;
   GError *err = NULL;
 
   if (src->location == NULL) {
@@ -186,15 +195,17 @@ gst_gio_src_start (GstBaseSrc * base_src)
     return FALSE;
   }
 
-  src->file = g_file_new_for_uri (src->location);
+  file = g_file_new_for_uri (src->location);
 
-  if (src->file == NULL) {
+  if (file == NULL) {
     GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
         ("Malformed URI or protocol not supported (%s)", src->location));
     return FALSE;
   }
 
-  src->stream = g_file_read (src->file, src->cancel, &err);
+  src->stream = g_file_read (file, src->cancel, &err);
+
+  g_object_unref (file);
 
   if (src->stream == NULL && !gst_gio_error (src, "g_file_read", &err, NULL)) {
 
@@ -209,13 +220,9 @@ gst_gio_src_start (GstBaseSrc * base_src)
 
     g_clear_error (&err);
 
-    g_object_unref (src->file);
-    src->file = NULL;
-
     return FALSE;
 
   } else if (src->stream == NULL) {
-    g_object_unref (src->file);
     return FALSE;
   }
 
@@ -250,11 +257,6 @@ gst_gio_src_stop (GstBaseSrc * base_src)
     src->stream = NULL;
   }
 
-  if (src->file != NULL) {
-    g_object_unref (src->file);
-    src->file = NULL;
-  }
-
   GST_DEBUG_OBJECT (src, "closed location %s", src->location);
 
   return success;
@@ -321,10 +323,9 @@ gst_gio_src_unlock_stop (GstBaseSrc * base_src)
 {
   GstGioSrc *src = GST_GIO_SRC (base_src);
 
-  GST_LOG_OBJECT (src, "restoring cancellable");
+  GST_LOG_OBJECT (src, "resetting cancellable");
 
-  g_object_unref (src->cancel);
-  src->cancel = g_cancellable_new ();
+  g_cancellable_reset (src->cancel);
 
   return TRUE;
 }

ext/gio/gstgiosrc.h

@@ -53,7 +53,6 @@ struct _GstGioSrc
   
   /*< private >*/
   GCancellable *cancel;
-  GFile *file;
   gchar *location;
   guint64 position;
   GFileInputStream *stream;