gstreamer/libs/videoscale/gstvideoscale.h

/* Gnome-Streamer
 * 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 <gst/gst.h>
#include <libs/colorspace/gstcolorspace.h>

typedef enum {
  GST_VIDEOSCALE_POINT_SAMPLE,
  GST_VIDEOSCALE_NEAREST,
  GST_VIDEOSCALE_BILINEAR,
  GST_VIDEOSCALE_BICUBIC
} GstVideoScaleMethod;

typedef struct _GstVideoScale GstVideoScale;
typedef void (*GstVideoScaleScaler) (GstVideoScale *scale, guchar *src, guchar *dest);

struct _GstVideoScale {
  guint source_width;
  guint source_height;
  guint dest_width;
  guint dest_height;
  GstColorSpaceType format;
  GstVideoScaleMethod method;
  guint scale_bytes;
  /* private */
  guchar copy_row[8192];
  guchar *temp;
  GstVideoScaleScaler scale;
  void (*scaler) (GstVideoScale *scale, guchar *src, guchar *dest, gint sw, gint sh, gint dw, gint dh);
  guchar (*filter) (guchar *src, gdouble x, gdouble y, gint sw, gint sh);
};

GstVideoScale *gst_videoscale_new(gint sw, gint sh, gint dw, gint dh, GstColorSpaceType format, GstVideoScaleMethod method);
#define gst_videoscale_scale(scaler, src, dest) (scaler)->scale((scaler), (src), (dest))
void gst_videoscale_destroy(GstVideoScale *scale);

#endif /* __GST_VIDEOSCALE_H__ */