/* 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_VIDEO_SCALE_H__

#define __GST_VIDEO_SCALE_H__

#include <gst/gst.h>

#include <gst/base/gstbasetransform.h>

#include "vs_image.h"

G_BEGIN_DECLS

GST_DEBUG_CATEGORY_EXTERN (video_scale_debug);

#define GST_CAT_DEFAULT video_scale_debug

#define GST_TYPE_VIDEO_SCALE \

  (gst_video_scale_get_type())

#define GST_VIDEO_SCALE(obj) \

  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_SCALE,GstVideoScale))

#define GST_VIDEO_SCALE_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_SCALE,GstVideoScaleClass))

#define GST_IS_VIDEO_SCALE(obj) \

  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_SCALE))

#define GST_IS_VIDEO_SCALE_CLASS(klass) \

  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_SCALE))

/**

 * GstVideoScaleMethod:

 * @GST_VIDEO_SCALE_NEAREST: use nearest neighbour scaling (fast and ugly)

 * @GST_VIDEO_SCALE_BILINEAR: use bilinear scaling (slower but prettier).

 * @GST_VIDEO_SCALE_4TAP: use a 4-tap filter for scaling (slow).

 *

 * The videoscale method to use.

 */

typedef enum {

  GST_VIDEO_SCALE_NEAREST,

  GST_VIDEO_SCALE_BILINEAR,

  GST_VIDEO_SCALE_4TAP

} GstVideoScaleMethod;

typedef struct _GstVideoScale GstVideoScale;

typedef struct _GstVideoScaleClass GstVideoScaleClass;

/**

 * GstVideoScale:

 *

 * Opaque data structure

 */

struct _GstVideoScale {

  GstBaseTransform element;

  GstVideoScaleMethod method;

  /* negotiated stuff */

  int format;

  VSImage src;

  VSImage dest;

  guint src_size;

  guint dest_size;

  gint to_width;

  gint to_height;

  gint from_width;

  gint from_height;

  /*< private >*/

  guint8 *tmp_buf;

};

struct _GstVideoScaleClass {

  GstBaseTransformClass parent_class;

};

GType gst_video_scale_get_type(void);

G_END_DECLS

#endif /* __GST_VIDEO_SCALE_H__ */