2 * Copyright (C) 2013 Wei Gao <weigao@multicorewareinc.com>
3 * Copyright (C) 2013 Lenny Wang
5 * This file is part of FFmpeg.
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVFILTER_UNSHARP_H
23 #define AVFILTER_UNSHARP_H
28 #define MIN_MATRIX_SIZE 3
29 #define MAX_MATRIX_SIZE 63
32 typedef struct UnsharpFilterParam {
33 int msize_x; ///< matrix width
34 int msize_y; ///< matrix height
35 int amount; ///< effect amount
36 int steps_x; ///< horizontal step count
37 int steps_y; ///< vertical step count
38 int scalebits; ///< bits to shift pixel
39 int32_t halfscale; ///< amount to add to pixel
40 uint32_t *sc[MAX_MATRIX_SIZE - 1]; ///< finite state machine storage
43 typedef struct UnsharpContext {
45 int lmsize_x, lmsize_y, cmsize_x, cmsize_y;
46 float lamount, camount;
47 UnsharpFilterParam luma; ///< luma parameters (width, height, amount)
48 UnsharpFilterParam chroma; ///< chroma parameters (width, height, amount)
51 int (* apply_unsharp)(AVFilterContext *ctx, AVFrame *in, AVFrame *out);
54 #endif /* AVFILTER_UNSHARP_H */