gstvideoorientation

gstvideoorientation — Interface for elements providing video orientation controls

Synopsis

#include <gst/interfaces/videoorientation.h>

                    GstVideoOrientation;
struct              GstVideoOrientationInterface;
gboolean            gst_video_orientation_get_hcenter   (GstVideoOrientation *video_orientation,
                                                         gint *center);
gboolean            gst_video_orientation_get_hflip     (GstVideoOrientation *video_orientation,
                                                         gboolean *flip);
gboolean            gst_video_orientation_get_vcenter   (GstVideoOrientation *video_orientation,
                                                         gint *center);
gboolean            gst_video_orientation_get_vflip     (GstVideoOrientation *video_orientation,
                                                         gboolean *flip);
gboolean            gst_video_orientation_set_hcenter   (GstVideoOrientation *video_orientation,
                                                         gint center);
gboolean            gst_video_orientation_set_hflip     (GstVideoOrientation *video_orientation,
                                                         gboolean flip);
gboolean            gst_video_orientation_set_vcenter   (GstVideoOrientation *video_orientation,
                                                         gint center);
gboolean            gst_video_orientation_set_vflip     (GstVideoOrientation *video_orientation,
                                                         gboolean flip);

Object Hierarchy

  GInterface
   +----GstVideoOrientation

Prerequisites

GstVideoOrientation requires GstImplementsInterface and GstElement.

Description

The interface allows unified access to control flipping and autocenter operation of video-sources or operators.

Details

GstVideoOrientation

typedef struct _GstVideoOrientation GstVideoOrientation;

Opaque GstVideoOrientation data structure.

struct GstVideoOrientationInterface

struct GstVideoOrientationInterface {
  GTypeInterface parent;

  /* virtual functions */
  gboolean (* get_hflip)   (GstVideoOrientation *video_orientation, gboolean *flip);
  gboolean (* get_vflip)   (GstVideoOrientation *video_orientation, gboolean *flip);
  gboolean (* get_hcenter) (GstVideoOrientation *video_orientation, gint *center);
  gboolean (* get_vcenter) (GstVideoOrientation *video_orientation, gint *center);

  gboolean (* set_hflip)   (GstVideoOrientation *video_orientation, gboolean flip);
  gboolean (* set_vflip)   (GstVideoOrientation *video_orientation, gboolean flip);
  gboolean (* set_hcenter) (GstVideoOrientation *video_orientation, gint center);
  gboolean (* set_vcenter) (GstVideoOrientation *video_orientation, gint center);
};

GstVideoOrientationInterface interface.

GTypeInterface `parent`;	parent interface type.
`get_hflip` ()	virtual method to get horizontal flipping state
`get_vflip` ()	virtual method to get vertical flipping state
`get_hcenter` ()	virtual method to get horizontal centering state
`get_vcenter` ()	virtual method to get vertical centering state
`set_hflip` ()	virtual method to set horizontal flipping state
`set_vflip` ()	virtual method to set vertical flipping state
`set_hcenter` ()	virtual method to set horizontal centering state
`set_vcenter` ()	virtual method to set vertical centering state

gst_video_orientation_get_hcenter ()

gboolean            gst_video_orientation_get_hcenter   (GstVideoOrientation *video_orientation,
                                                         gint *center);

Get the horizontal centering offset from the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`center` :	return location for the result
Returns :	`TRUE` in case the element supports centering

Since 0.10.11

gst_video_orientation_get_hflip ()

gboolean            gst_video_orientation_get_hflip     (GstVideoOrientation *video_orientation,
                                                         gboolean *flip);

Get the horizontal flipping state (TRUE for flipped) from the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`flip` :	return location for the result
Returns :	`TRUE` in case the element supports flipping

Since 0.10.11

gst_video_orientation_get_vcenter ()

gboolean            gst_video_orientation_get_vcenter   (GstVideoOrientation *video_orientation,
                                                         gint *center);

Get the vertical centering offset from the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`center` :	return location for the result
Returns :	`TRUE` in case the element supports centering

Since 0.10.11

gst_video_orientation_get_vflip ()

gboolean            gst_video_orientation_get_vflip     (GstVideoOrientation *video_orientation,
                                                         gboolean *flip);

Get the vertical flipping state (TRUE for flipped) from the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`flip` :	return location for the result
Returns :	`TRUE` in case the element supports flipping

Since 0.10.11

gst_video_orientation_set_hcenter ()

gboolean            gst_video_orientation_set_hcenter   (GstVideoOrientation *video_orientation,
                                                         gint center);

Set the horizontal centering offset for the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`center` :	centering offset
Returns :	`TRUE` in case the element supports centering

Since 0.10.11

gst_video_orientation_set_hflip ()

gboolean            gst_video_orientation_set_hflip     (GstVideoOrientation *video_orientation,
                                                         gboolean flip);

Set the horizontal flipping state (TRUE for flipped) for the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`flip` :	use flipping
Returns :	`TRUE` in case the element supports flipping

Since 0.10.11

gst_video_orientation_set_vcenter ()

gboolean            gst_video_orientation_set_vcenter   (GstVideoOrientation *video_orientation,
                                                         gint center);

Set the vertical centering offset for the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`center` :	centering offset
Returns :	`TRUE` in case the element supports centering

Since 0.10.11

gst_video_orientation_set_vflip ()

gboolean            gst_video_orientation_set_vflip     (GstVideoOrientation *video_orientation,
                                                         gboolean flip);

Set the vertical flipping state (TRUE for flipped) for the given object.

`video_orientation` :	GstVideoOrientation interface of a GstElement
`flip` :	use flipping
Returns :	`TRUE` in case the element supports flipping

Since 0.10.11

			GStreamer Base Plugins 0.10 Library Reference Manual
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