gstreamer/libs/videoscale/gstvideoscale.h

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/* 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__ */