mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-18 15:51:11 +00:00
130 lines
4 KiB
C
130 lines
4 KiB
C
/* GStreamer video sink base class
|
|
* Copyright (C) <2003> Julien Moutte <julien@moutte.net>
|
|
* Copyright (C) <2009> Tim-Philipp Müller <tim centricular net>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/* FIXME 0.11: turn this into a proper base class */
|
|
|
|
#ifndef __GST_VIDEO_SINK_H__
|
|
#define __GST_VIDEO_SINK_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include <gst/base/gstbasesink.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_TYPE_VIDEO_SINK (gst_video_sink_get_type())
|
|
#define GST_VIDEO_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VIDEO_SINK, GstVideoSink))
|
|
#define GST_VIDEO_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_VIDEO_SINK, GstVideoSinkClass))
|
|
#define GST_IS_VIDEO_SINK(obj) \
|
|
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VIDEO_SINK))
|
|
#define GST_IS_VIDEO_SINK_CLASS(klass) \
|
|
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_VIDEO_SINK))
|
|
#define GST_VIDEO_SINK_GET_CLASS(klass) \
|
|
(G_TYPE_INSTANCE_GET_CLASS ((klass), GST_TYPE_VIDEO_SINK, GstVideoSinkClass))
|
|
|
|
/**
|
|
* GST_VIDEO_SINK_CAST:
|
|
* @obj: a #GstVideoSink or derived object
|
|
*
|
|
* Cast @obj to a #GstVideoSink without runtime type check.
|
|
*/
|
|
#define GST_VIDEO_SINK_CAST(obj) ((GstVideoSink *) (obj))
|
|
|
|
/**
|
|
* GST_VIDEO_SINK_PAD:
|
|
* @obj: a #GstVideoSink
|
|
*
|
|
* Get the sink #GstPad of @obj.
|
|
*/
|
|
#define GST_VIDEO_SINK_PAD(obj) GST_BASE_SINK_PAD(obj)
|
|
|
|
#define GST_VIDEO_SINK_WIDTH(obj) (GST_VIDEO_SINK_CAST (obj)->width)
|
|
#define GST_VIDEO_SINK_HEIGHT(obj) (GST_VIDEO_SINK_CAST (obj)->height)
|
|
|
|
typedef struct _GstVideoSink GstVideoSink;
|
|
typedef struct _GstVideoSinkClass GstVideoSinkClass;
|
|
typedef struct _GstVideoRectangle GstVideoRectangle;
|
|
typedef struct _GstVideoSinkPrivate GstVideoSinkPrivate;
|
|
|
|
/**
|
|
* GstVideoRectangle:
|
|
* @x: X coordinate of rectangle's top-left point
|
|
* @y: Y coordinate of rectangle's top-left point
|
|
* @w: width of the rectangle
|
|
* @h: height of the rectangle
|
|
*
|
|
* Helper structure representing a rectangular area.
|
|
*/
|
|
struct _GstVideoRectangle {
|
|
gint x;
|
|
gint y;
|
|
gint w;
|
|
gint h;
|
|
};
|
|
|
|
/**
|
|
* GstVideoSink:
|
|
* @height: video height (derived class needs to set this)
|
|
* @width: video width (derived class needs to set this)
|
|
*
|
|
* The video sink instance structure. Derived video sinks should set the
|
|
* @height and @width members.
|
|
*/
|
|
struct _GstVideoSink {
|
|
GstBaseSink element; /* FIXME 0.11: this should not be called 'element' */
|
|
|
|
/*< public >*/
|
|
gint width, height;
|
|
|
|
/*< private >*/
|
|
GstVideoSinkPrivate *priv;
|
|
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
/**
|
|
* GstVideoSinkClass:
|
|
* @parent_class: the parent class structure
|
|
* @show_frame: render a video frame. Maps to #GstBaseSinkClass.render() and
|
|
* #GstBaseSinkClass.preroll() vfuncs. Rendering during preroll will be
|
|
* suppressed if the #GstVideoSink:show-preroll-frame property is set to
|
|
* %FALSE.
|
|
*
|
|
* The video sink class structure. Derived classes should override the
|
|
* @show_frame virtual function.
|
|
*/
|
|
struct _GstVideoSinkClass {
|
|
GstBaseSinkClass parent_class;
|
|
|
|
GstFlowReturn (*show_frame) (GstVideoSink *video_sink, GstBuffer *buf);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GType gst_video_sink_get_type (void);
|
|
|
|
void gst_video_sink_center_rect (GstVideoRectangle src, GstVideoRectangle dst,
|
|
GstVideoRectangle *result, gboolean scaling);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_VIDEO_SINK_H__ */
|