vl_median_filter.h revision a9ffcceee9214342dab2085a35452acaa41003c5 
1/**************************************************************************
2 *
3 * Copyright 2012 Christian König.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28/* implementation of a median filter for noise reduction */
29
30#ifndef vl_median_filter_h
31#define vl_median_filter_h
32
33#include "pipe/p_state.h"
34
35enum vl_median_filter_shape
36{
37   VL_MEDIAN_FILTER_BOX,
38   VL_MEDIAN_FILTER_CROSS,
39   VL_MEDIAN_FILTER_X,
40   VL_MEDIAN_FILTER_HORIZONTAL,
41   VL_MEDIAN_FILTER_VERTICAL
42};
43
44struct vl_median_filter
45{
46   struct pipe_context *pipe;
47   struct pipe_vertex_buffer quad;
48
49   void *rs_state;
50   void *blend;
51   void *sampler;
52   void *ves;
53   void *vs, *fs;
54};
55
56bool
57vl_median_filter_init(struct vl_median_filter *filter, struct pipe_context *pipe,
58                      unsigned width, unsigned height, unsigned size,
59                      enum vl_median_filter_shape shape);
60
61void
62vl_median_filter_cleanup(struct vl_median_filter *filter);
63
64
65void
66vl_median_filter_render(struct vl_median_filter *filter,
67                        struct pipe_sampler_view *src,
68                        struct pipe_surface *dst);
69
70#endif /* vl_median_filter_h */
71