From ab27c0da8ede5a7fff4aade0e96919eb001f98f2 Mon Sep 17 00:00:00 2001
From: Vincent Penquerc'h <vincent.penquerch@collabora.co.uk>
Date: Thu, 27 Oct 2011 15:53:48 +0100
Subject: [PATCH] tiger: add a 'silent' property to skip rendering

https://bugzilla.gnome.org/show_bug.cgi?id=662857
---
 ext/kate/gstkatetiger.c | 18 ++++++++++++++++--
 ext/kate/gstkatetiger.h |  1 +
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/ext/kate/gstkatetiger.c b/ext/kate/gstkatetiger.c
index 4dd7ef2395..134469fe91 100644
--- a/ext/kate/gstkatetiger.c
+++ b/ext/kate/gstkatetiger.c
@@ -121,7 +121,8 @@ enum
   ARG_DEFAULT_BACKGROUND_RED,
   ARG_DEFAULT_BACKGROUND_GREEN,
   ARG_DEFAULT_BACKGROUND_BLUE,
-  ARG_DEFAULT_BACKGROUND_ALPHA
+  ARG_DEFAULT_BACKGROUND_ALPHA,
+  ARG_SILENT
 };
 
 static GstStaticPadTemplate kate_sink_factory =
@@ -294,6 +295,12 @@ gst_kate_tiger_class_init (GstKateTigerClass * klass)
           "Default background color (alpha component, between 0 and 255) to render text with",
           0, 255, 255, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  /* FIXME 0.11: rename to "visible" or "text-visible" or "render-text" */
+  g_object_class_install_property (gobject_class, ARG_SILENT,
+      g_param_spec_boolean ("silent", "silent",
+          "Whether to render the stream",
+          FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   gstelement_class->change_state =
       GST_DEBUG_FUNCPTR (gst_kate_tiger_change_state);
 }
@@ -353,6 +360,7 @@ gst_kate_tiger_init (GstKateTiger * tiger, GstKateTigerClass * gclass)
   tiger->default_background_g = 0;
   tiger->default_background_b = 0;
   tiger->default_background_a = 0;
+  tiger->silent = FALSE;
 
   tiger->video_width = 0;
   tiger->video_height = 0;
@@ -488,6 +496,9 @@ gst_kate_tiger_set_property (GObject * object, guint prop_id,
       tiger->default_background_a = g_value_get_int (value);
       gst_kate_tiger_update_default_background_color (tiger);
       break;
+    case ARG_SILENT:
+      tiger->silent = g_value_get_boolean (value);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -542,6 +553,9 @@ gst_kate_tiger_get_property (GObject * object, guint prop_id,
     case ARG_DEFAULT_BACKGROUND_ALPHA:
       g_value_set_int (value, tiger->default_background_a);
       break;
+    case ARG_SILENT:
+      g_value_set_boolean (value, tiger->silent);
+      break;
     default:
       if (!gst_kate_util_decoder_base_get_property (&tiger->decoder, object,
               prop_id, value, pspec)) {
@@ -767,7 +781,7 @@ gst_kate_tiger_video_chain (GstPad * pad, GstBuffer * buf)
   }
 
   /* if there nothing to draw, we can just push the video buffer as is */
-  if (ret > 0)
+  if (ret > 0 || tiger->silent)
     goto pass;
 
   /* there is something to draw, so first make the buffer writable */
diff --git a/ext/kate/gstkatetiger.h b/ext/kate/gstkatetiger.h
index d3880b32bf..0947da4cff 100644
--- a/ext/kate/gstkatetiger.h
+++ b/ext/kate/gstkatetiger.h
@@ -88,6 +88,7 @@ struct _GstKateTiger
   guchar default_background_g;
   guchar default_background_b;
   guchar default_background_a;
+  gboolean silent;
 
   gint video_width;
   gint video_height;