2 * Copyright (c) 2015-2016 Kieran Kunhya <kieran@kunhya.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/attributes.h"
22 #include "libavutil/common.h"
23 #include "libavutil/avassert.h"
27 static av_always_inline void filter(int16_t *output, ptrdiff_t out_stride,
28 const int16_t *low, ptrdiff_t low_stride,
29 const int16_t *high, ptrdiff_t high_stride,
35 tmp = (11*low[0*low_stride] - 4*low[1*low_stride] + low[2*low_stride] + 4) >> 3;
36 output[(2*0+0)*out_stride] = (tmp + high[0*high_stride]) >> 1;
38 output[(2*0+0)*out_stride] = av_clip_uintp2_c(output[(2*0+0)*out_stride], clip);
40 tmp = ( 5*low[0*low_stride] + 4*low[1*low_stride] - low[2*low_stride] + 4) >> 3;
41 output[(2*0+1)*out_stride] = (tmp - high[0*high_stride]) >> 1;
43 output[(2*0+1)*out_stride] = av_clip_uintp2_c(output[(2*0+1)*out_stride], clip);
45 for (i = 1; i < len - 1; i++) {
46 tmp = (low[(i-1)*low_stride] - low[(i+1)*low_stride] + 4) >> 3;
47 output[(2*i+0)*out_stride] = (tmp + low[i*low_stride] + high[i*high_stride]) >> 1;
49 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
51 tmp = (low[(i+1)*low_stride] - low[(i-1)*low_stride] + 4) >> 3;
52 output[(2*i+1)*out_stride] = (tmp + low[i*low_stride] - high[i*high_stride]) >> 1;
54 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
57 tmp = ( 5*low[i*low_stride] + 4*low[(i-1)*low_stride] - low[(i-2)*low_stride] + 4) >> 3;
58 output[(2*i+0)*out_stride] = (tmp + high[i*high_stride]) >> 1;
60 output[(2*i+0)*out_stride] = av_clip_uintp2_c(output[(2*i+0)*out_stride], clip);
62 tmp = (11*low[i*low_stride] - 4*low[(i-1)*low_stride] + low[(i-2)*low_stride] + 4) >> 3;
63 output[(2*i+1)*out_stride] = (tmp - high[i*high_stride]) >> 1;
65 output[(2*i+1)*out_stride] = av_clip_uintp2_c(output[(2*i+1)*out_stride], clip);
68 static void vert_filter(int16_t *output, ptrdiff_t out_stride,
69 const int16_t *low, ptrdiff_t low_stride,
70 const int16_t *high, ptrdiff_t high_stride,
71 int width, int height)
73 for (int i = 0; i < width; i++) {
74 filter(output, out_stride, low, low_stride, high, high_stride, height, 0);
81 static void horiz_filter(int16_t *output, ptrdiff_t ostride,
82 const int16_t *low, ptrdiff_t lstride,
83 const int16_t *high, ptrdiff_t hstride,
84 int width, int height)
86 for (int i = 0; i < height; i++) {
87 filter(output, 1, low, 1, high, 1, width, 0);
90 output += ostride * 2;
94 static void horiz_filter_clip(int16_t *output, const int16_t *low, const int16_t *high,
97 filter(output, 1, low, 1, high, 1, width, clip);
100 static void horiz_filter_clip_bayer(int16_t *output, const int16_t *low, const int16_t *high,
103 filter(output, 2, low, 1, high, 1, width, clip);
106 av_cold void ff_cfhddsp_init(CFHDDSPContext *c, int depth, int bayer)
108 c->horiz_filter = horiz_filter;
109 c->vert_filter = vert_filter;
112 c->horiz_filter_clip = horiz_filter_clip_bayer;
114 c->horiz_filter_clip = horiz_filter_clip;
117 ff_cfhddsp_init_x86(c, depth, bayer);