FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/vp56dsp.c
Date: 2021-09-16 08:47:15
Exec Total Coverage
Lines: 23 23 100.0%
Branches: 4 4 100.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org>
3 * Copyright (c) 2010 Mans Rullgard <mans@mansr.com>
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 #include <stdint.h>
23
24 #include "config.h"
25 #include "libavutil/attributes.h"
26 #include "vp56dsp.h"
27 #include "libavutil/common.h"
28
29 #define VP56_EDGE_FILTER(pfx, suf, pix_inc, line_inc) \
30 static void pfx ## _edge_filter_ ## suf(uint8_t *yuv, ptrdiff_t stride, \
31 int t) \
32 { \
33 int pix2_inc = 2 * pix_inc; \
34 int i, v; \
35 \
36 for (i=0; i<12; i++) { \
37 v = (yuv[-pix2_inc] + 3*(yuv[0]-yuv[-pix_inc]) - yuv[pix_inc] + 4)>>3;\
38 v = pfx##_adjust(v, t); \
39 yuv[-pix_inc] = av_clip_uint8(yuv[-pix_inc] + v); \
40 yuv[0] = av_clip_uint8(yuv[0] - v); \
41 yuv += line_inc; \
42 } \
43 }
44
45 #if CONFIG_VP5_DECODER
46 /* Gives very similar result than the vp6 version except in a few cases */
47 1318356 static int vp5_adjust(int v, int t)
48 {
49 1318356 int s2, s1 = v >> 31;
50 1318356 v ^= s1;
51 1318356 v -= s1;
52 1318356 v *= v < 2*t;
53 1318356 v -= t;
54 1318356 s2 = v >> 31;
55 1318356 v ^= s2;
56 1318356 v -= s2;
57 1318356 v = t - v;
58 1318356 v += s1;
59 1318356 v ^= s1;
60 1318356 return v;
61 }
62
63
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1093807 VP56_EDGE_FILTER(vp5, hor, 1, stride)
65
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334412 VP56_EDGE_FILTER(vp5, ver, stride, 1)
66
67 2 av_cold void ff_vp5dsp_init(VP56DSPContext *s)
68 {
69 2 s->edge_filter_hor = vp5_edge_filter_hor;
70 2 s->edge_filter_ver = vp5_edge_filter_ver;
71 2 }
72 #endif /* CONFIG_VP5_DECODER */
73
74 #if CONFIG_VP6_DECODER
75 17 av_cold void ff_vp6dsp_init(VP56DSPContext *s)
76 {
77 17 s->vp6_filter_diag4 = ff_vp6_filter_diag4_c;
78
79 if (ARCH_ARM)
80 ff_vp6dsp_init_arm(s);
81 if (ARCH_X86)
82 17 ff_vp6dsp_init_x86(s);
83 17 }
84 #endif /* CONFIG_VP6_DECODER */
85