2 * Copyright (c) 2010 Nolan Lum <nol888@gmail.com>
3 * Copyright (c) 2009 Loren Merritt <lorenm@u.washignton.edu>
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVFILTER_GRADFUN_H
23 #define AVFILTER_GRADFUN_H
27 /// Holds instance-specific information for gradfun.
28 typedef struct GradFunContext
{
29 int thresh
; ///< threshold for gradient algorithm
30 int radius
; ///< blur radius
31 int chroma_w
; ///< width of the chroma planes
32 int chroma_h
; ///< weight of the chroma planes
33 int chroma_r
; ///< blur radius for the chroma planes
34 uint16_t *buf
; ///< holds image data for blur algorithm passed into filter.
36 void (*filter_line
) (uint8_t *dst
, uint8_t *src
, uint16_t *dc
, int width
, int thresh
, const uint16_t *dithers
);
37 void (*blur_line
) (uint16_t *dc
, uint16_t *buf
, uint16_t *buf1
, uint8_t *src
, int src_linesize
, int width
);
40 void ff_gradfun_init_x86(GradFunContext
*gf
);
42 void ff_gradfun_filter_line_c(uint8_t *dst
, uint8_t *src
, uint16_t *dc
, int width
, int thresh
, const uint16_t *dithers
);
43 void ff_gradfun_blur_line_c(uint16_t *dc
, uint16_t *buf
, uint16_t *buf1
, uint8_t *src
, int src_linesize
, int width
);
45 #endif /* AVFILTER_GRADFUN_H */