GStreamer Base Plugins 1.0 Library Reference Manual: gstvideofilter

gstvideofilter

gstvideofilter — Base class for video filters

Types and Values

struct	GstVideoFilter
struct	GstVideoFilterClass

Object Hierarchy

    GObject
    ╰── GInitiallyUnowned
        ╰── GstObject
            ╰── GstElement
                ╰── GstBaseTransform
                    ╰── GstVideoFilter

Includes

#include <gst/video/gstvideofilter.h>

Description

Provides useful functions and a base class for video filters.

The videofilter will by default enable QoS on the parent GstBaseTransform to implement frame dropping.

Functions

Types and Values

struct GstVideoFilter

struct GstVideoFilter;

struct GstVideoFilterClass

struct GstVideoFilterClass {
  GstBaseTransformClass parent_class;

  gboolean      (*set_info)           (GstVideoFilter *filter,
                                       GstCaps *incaps, GstVideoInfo *in_info,
                                       GstCaps *outcaps, GstVideoInfo *out_info);

  /* transform */
  GstFlowReturn (*transform_frame)    (GstVideoFilter *filter,
                                       GstVideoFrame *inframe, GstVideoFrame *outframe);
  GstFlowReturn (*transform_frame_ip) (GstVideoFilter *trans, GstVideoFrame *frame);
};

The video filter class structure.

Members

GstBaseTransformClass `parent_class`;	the parent class structure
`set_info` ()	function to be called with the negotiated caps and video infos
`transform_frame` ()	transform a video frame
`transform_frame_ip` ()	transform a video frame in place