h264_metadata: Add option to delete filler data
[libav.git] / libavfilter / gradfun.h
1 /*
2 * Copyright (c) 2010 Nolan Lum <nol888@gmail.com>
3 * Copyright (c) 2009 Loren Merritt <lorenm@u.washington.edu>
4 *
5 * This file is part of Libav.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #ifndef AVFILTER_GRADFUN_H
23 #define AVFILTER_GRADFUN_H
24
25 #include "avfilter.h"
26
27 /// Holds instance-specific information for gradfun.
28 typedef struct GradFunContext {
29 const AVClass *class;
30 float strength;
31 int thresh; ///< threshold for gradient algorithm
32 int radius; ///< blur radius
33 int chroma_w; ///< width of the chroma planes
34 int chroma_h; ///< weight of the chroma planes
35 int chroma_r; ///< blur radius for the chroma planes
36 uint16_t *buf; ///< holds image data for blur algorithm passed into filter.
37 /// DSP functions.
38 void (*filter_line) (uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers);
39 void (*blur_line) (uint16_t *dc, uint16_t *buf, uint16_t *buf1, uint8_t *src, int src_linesize, int width);
40 } GradFunContext;
41
42 void ff_gradfun_init_x86(GradFunContext *gf);
43
44 void ff_gradfun_filter_line_c(uint8_t *dst, uint8_t *src, uint16_t *dc, int width, int thresh, const uint16_t *dithers);
45 void ff_gradfun_blur_line_c(uint16_t *dc, uint16_t *buf, uint16_t *buf1, uint8_t *src, int src_linesize, int width);
46
47 #endif /* AVFILTER_GRADFUN_H */