--- /dev/null
+/* GStreamer
+ * Copyright (C) 2006 Nokia <stefan.kost@nokia.com>
+ *
+ * videoorientation.c: video flipping and centering interface
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "videoorientation.h"
+#include "interfaces-marshal.h"
+
+#include <string.h>
+
+/**
+ * SECTION:gstvideoorientation
+ * @short_description: Interface for elements providing video orientation
+ * controls
+ *
+ * The interface allows unified access to control flipping and autocenter
+ * operation of video-sources or operators.
+ *
+ * Since: 0.10.11
+ */
+
+static void gst_video_orientation_iface_init (GstVideoOrientationInterface *
+ iface);
+
+GType
+gst_video_orientation_get_type (void)
+{
+ static GType gst_video_orientation_type = 0;
+
+ if (!gst_video_orientation_type) {
+ static const GTypeInfo gst_video_orientation_info = {
+ sizeof (GstVideoOrientationInterface),
+ (GBaseInitFunc) gst_video_orientation_iface_init,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ 0,
+ 0,
+ NULL,
+ };
+
+ gst_video_orientation_type = g_type_register_static (G_TYPE_INTERFACE,
+ "GstVideoOrientation", &gst_video_orientation_info, 0);
+ g_type_interface_add_prerequisite (gst_video_orientation_type,
+ GST_TYPE_IMPLEMENTS_INTERFACE);
+ }
+
+ return gst_video_orientation_type;
+}
+
+static void
+gst_video_orientation_iface_init (GstVideoOrientationInterface * iface)
+{
+ /* default virtual functions */
+
+ iface->get_hflip = NULL;
+ iface->get_vflip = NULL;
+ iface->get_hcenter = NULL;
+ iface->get_vcenter = NULL;
+
+ iface->set_hflip = NULL;
+ iface->set_vflip = NULL;
+ iface->set_hcenter = NULL;
+ iface->set_vcenter = NULL;
+}
+
+/**
+ * gst_video_orientation_get_hflip:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @flip: return location for the result
+ *
+ * Get the horizontal flipping state (%TRUE for flipped) from the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports flipping
+ */
+gboolean
+gst_video_orientation_get_hflip (GstVideoOrientation * video_orientation,
+ gboolean * flip)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->get_hflip) {
+ return iface->get_hflip (video_orientation, flip);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_get_vflip:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @flip: return location for the result
+ *
+ * Get the vertical flipping state (%TRUE for flipped) from the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports flipping
+ */
+gboolean
+gst_video_orientation_get_vflip (GstVideoOrientation * video_orientation,
+ gboolean * flip)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->get_vflip) {
+ return iface->get_vflip (video_orientation, flip);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_get_hcenter:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @center: return location for the result
+ *
+ * Get the horizontal centering offset from the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports centering
+ */
+gboolean
+gst_video_orientation_get_hcenter (GstVideoOrientation * video_orientation,
+ gint * center)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->get_hcenter) {
+ return iface->get_hcenter (video_orientation, center);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_get_vcenter:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @center: return location for the result
+ *
+ * Get the vertical centering offset from the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports centering
+ */
+gboolean
+gst_video_orientation_get_vcenter (GstVideoOrientation * video_orientation,
+ gint * center)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->get_vcenter) {
+ return iface->get_vcenter (video_orientation, center);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_set_hflip:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @flip: use flipping
+ *
+ * Set the horizontal flipping state (%TRUE for flipped) for the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports flipping
+ */
+gboolean
+gst_video_orientation_set_hflip (GstVideoOrientation * video_orientation,
+ gboolean flip)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->set_hflip) {
+ return iface->set_hflip (video_orientation, flip);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_set_vflip:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @flip: use flipping
+ *
+ * Set the vertical flipping state (%TRUE for flipped) for the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports flipping
+ */
+gboolean
+gst_video_orientation_set_vflip (GstVideoOrientation * video_orientation,
+ gboolean flip)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->set_vflip) {
+ return iface->set_vflip (video_orientation, flip);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_set_hcenter:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @center: centering offset
+ *
+ * Set the horizontal centering offset for the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports centering
+ */
+gboolean
+gst_video_orientation_set_hcenter (GstVideoOrientation * video_orientation,
+ gint center)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->set_hcenter) {
+ return iface->set_hcenter (video_orientation, center);
+ }
+ return FALSE;
+}
+
+/**
+ * gst_video_orientation_set_vcenter:
+ * @video_orientation: #GstVideoOrientation interface of a #GstElement
+ * @center: centering offset
+ *
+ * Set the vertical centering offset for the given object.
+ *
+ * Since: 0.10.11
+ * Returns: %TRUE in case the element supports centering
+ */
+gboolean
+gst_video_orientation_set_vcenter (GstVideoOrientation * video_orientation,
+ gint center)
+{
+ GstVideoOrientationInterface *iface =
+ GST_VIDEO_ORIENTATION_GET_IFACE (video_orientation);
+
+ if (iface->set_vcenter) {
+ return iface->set_vcenter (video_orientation, center);
+ }
+ return FALSE;
+}
projects / mafwsubrenderer / blobdiff