Added gst-plugins-base-subtitles0.10-0.10.34 for Meego Harmattan 1.2

[mafwsubrenderer] / gst-plugins-base-subtitles0.10 / gst-libs / gst / video / gstvideofilter.c

diff --git a/gst-plugins-base-subtitles0.10/gst-libs/gst/video/gstvideofilter.c b/gst-plugins-base-subtitles0.10/gst-libs/gst/video/gstvideofilter.c
new file mode 100644 (file)
index 0000000..2d08a60
--- /dev/null
+++ b/gst-plugins-base-subtitles0.10/gst-libs/gst/video/gstvideofilter.c
@@ -0,0 +1,124 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2003> David Schleef <ds@schleef.org>
+ *
+ * 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+ /**
+ * SECTION:gstvideofilter
+ * @short_description: Base class for video filters
+ * 
+ * <refsect2>
+ * <para>
+ * Provides useful functions and a base class for video filters.
+ * </para>
+ * <para>
+ * The videofilter will by default enable QoS on the parent GstBaseTransform
+ * to implement frame dropping.
+ * </para>
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstvideofilter.h"
+
+#include <gst/video/video.h>
+
+GST_DEBUG_CATEGORY_STATIC (gst_video_filter_debug);
+#define GST_CAT_DEFAULT gst_video_filter_debug
+
+static void gst_video_filter_class_init (gpointer g_class, gpointer class_data);
+static void gst_video_filter_init (GTypeInstance * instance, gpointer g_class);
+
+static GstBaseTransformClass *parent_class = NULL;
+
+GType
+gst_video_filter_get_type (void)
+{
+  static GType video_filter_type = 0;
+
+  if (!video_filter_type) {
+    static const GTypeInfo video_filter_info = {
+      sizeof (GstVideoFilterClass),
+      NULL,
+      NULL,
+      gst_video_filter_class_init,
+      NULL,
+      NULL,
+      sizeof (GstVideoFilter),
+      0,
+      gst_video_filter_init,
+    };
+
+    video_filter_type = g_type_register_static (GST_TYPE_BASE_TRANSFORM,
+        "GstVideoFilter", &video_filter_info, G_TYPE_FLAG_ABSTRACT);
+  }
+  return video_filter_type;
+}
+
+static gboolean
+gst_video_filter_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
+    guint * size)
+{
+  GstVideoFormat fmt;
+  gint width, height;
+
+  if (!gst_video_format_parse_caps (caps, &fmt, &width, &height)) {
+    GST_WARNING_OBJECT (btrans, "Failed to parse caps %" GST_PTR_FORMAT, caps);
+    return FALSE;
+  }
+
+  *size = gst_video_format_get_size (fmt, width, height);
+
+  GST_DEBUG_OBJECT (btrans, "Returning size %u bytes for caps %"
+      GST_PTR_FORMAT, *size, caps);
+
+  return TRUE;
+}
+
+static void
+gst_video_filter_class_init (gpointer g_class, gpointer class_data)
+{
+  GstBaseTransformClass *trans_class;
+  GstVideoFilterClass *klass;
+
+  klass = (GstVideoFilterClass *) g_class;
+  trans_class = (GstBaseTransformClass *) klass;
+
+  trans_class->get_unit_size =
+      GST_DEBUG_FUNCPTR (gst_video_filter_get_unit_size);
+
+  parent_class = g_type_class_peek_parent (klass);
+
+  GST_DEBUG_CATEGORY_INIT (gst_video_filter_debug, "videofilter", 0,
+      "videofilter");
+}
+
+static void
+gst_video_filter_init (GTypeInstance * instance, gpointer g_class)
+{
+  GstVideoFilter *videofilter = GST_VIDEO_FILTER (instance);
+
+  GST_DEBUG_OBJECT (videofilter, "gst_video_filter_init");
+
+  videofilter->inited = FALSE;
+  /* enable QoS */
+  gst_base_transform_set_qos_enabled (GST_BASE_TRANSFORM (videofilter), TRUE);
+}