gstreamer/gst/videoscale/gstvideoscale.h

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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.
*/
#ifndef __GST_VIDEOSCALE_H__
#define __GST_VIDEOSCALE_H__
#include <config.h>
#include <gst/gst.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_VIDEOSCALE \
(gst_videoscale_get_type())
#define GST_VIDEOSCALE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOSCALE,GstVideoscale))
#define GST_VIDEOSCALE_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOSCALE,GstVideoscale))
#define GST_IS_VIDEOSCALE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOSCALE))
#define GST_IS_VIDEOSCALE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOSCALE))
typedef enum {
GST_VIDEOSCALE_POINT_SAMPLE,
GST_VIDEOSCALE_NEAREST,
GST_VIDEOSCALE_BILINEAR,
GST_VIDEOSCALE_BICUBIC
} GstVideoScaleMethod;
typedef struct _GstVideoscale GstVideoscale;
typedef struct _GstVideoscaleClass GstVideoscaleClass;
struct _GstVideoscale {
GstElement element;
GstPad *sinkpad,*srcpad;
/* video state */
gint format;
gint width;
gint height;
gint targetwidth;
gint targetheight;
GstVideoScaleMethod method;
guint scale_bytes;
/* private */
guchar *temp;
void (*scale_cc) (GstVideoscale *scale, guchar *src, guchar *dest);
void (*scaler) (GstVideoscale *scale, guchar *src, guchar *dest,int,int,int,int);
guchar (*filter) (guchar *src, gdouble x, gdouble y, gint sw, gint sh);
guchar copy_row[8192];
};
struct _GstVideoscaleClass {
GstElementClass parent_class;
};
GType gst_videoscale_get_type(void);
void gst_videoscale_setup(GstVideoscale *);
#define gst_videoscale_scale(scale, src, dest) (scale)->scale_cc((scale), (src), (dest))
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_VIDEOSCALE_H__ */