[gtk] gstmedia: Implement error handling.

[Benjamin Otte <otte src gnome org>]

commit 142326561017178711f170a52f4e1213d4aca3d8
Author: Benjamin Otte <otte redhat com>
Date:   Tue Dec 18 02:04:54 2018 +0100

    gstmedia: Implement error handling.
    
    I wonder who forgot that.
    Whoops.

 modules/media/gtkgstmediafile.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
---
diff --git a/modules/media/gtkgstmediafile.c b/modules/media/gtkgstmediafile.c
index afbf637bd3..745ba3bc88 100644
--- a/modules/media/gtkgstmediafile.c
+++ b/modules/media/gtkgstmediafile.c
@@ -158,6 +158,18 @@ gtk_gst_media_file_seek_done_cb (GstPlayer       *player,
   gtk_media_stream_update (GTK_MEDIA_STREAM (self), FROM_GST_TIME (time));
 }
 
+static void
+gtk_gst_media_file_error_cb (GstPlayer       *player,
+                             GError          *error,
+                             GtkGstMediaFile *self)
+{
+  if (gtk_media_stream_get_error (GTK_MEDIA_STREAM (self)))
+    return;
+
+  gtk_media_stream_gerror (GTK_MEDIA_STREAM (self),
+                           g_error_copy (error));
+}
+
 static void
 gtk_gst_media_file_end_of_stream_cb (GstPlayer       *player,
                                      GtkGstMediaFile *self)
@@ -184,6 +196,7 @@ gtk_gst_media_file_destroy_player (GtkGstMediaFile *self)
   g_signal_handlers_disconnect_by_func (self->player, gtk_gst_media_file_position_updated_cb, self);
   g_signal_handlers_disconnect_by_func (self->player, gtk_gst_media_file_end_of_stream_cb, self);
   g_signal_handlers_disconnect_by_func (self->player, gtk_gst_media_file_seek_done_cb, self);
+  g_signal_handlers_disconnect_by_func (self->player, gtk_gst_media_file_error_cb, self);
   g_object_unref (self->player);
   self->player = NULL;
 }
@@ -202,6 +215,7 @@ gtk_gst_media_file_create_player (GtkGstMediaFile *file)
   g_signal_connect (self->player, "position-updated", G_CALLBACK (gtk_gst_media_file_position_updated_cb), 
self);
   g_signal_connect (self->player, "end-of-stream", G_CALLBACK (gtk_gst_media_file_end_of_stream_cb), self);
   g_signal_connect (self->player, "seek-done", G_CALLBACK (gtk_gst_media_file_seek_done_cb), self);
+  g_signal_connect (self->player, "error", G_CALLBACK (gtk_gst_media_file_error_cb), self);
 }
 
 static void