FFmpeg
h2656_deblock_template.c
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1 
2 /*
3  * HEVC/VVC deblocking dsp template
4  *
5  * Copyright (C) 2024 Nuo Mi
6  * Copyright (C) 2012 - 2013 Guillaume Martres
7  *
8  * This file is part of FFmpeg.
9  *
10  * FFmpeg is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * FFmpeg is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with FFmpeg; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
25 static void FUNC(loop_filter_luma_strong)(pixel *pix, const ptrdiff_t xstride, const ptrdiff_t ystride,
26  const int32_t tc, const int32_t tc2, const int tc3,
27  const uint8_t no_p, const uint8_t no_q)
28 {
29  for (int d = 0; d < 4; d++) {
30  const int p3 = P3;
31  const int p2 = P2;
32  const int p1 = P1;
33  const int p0 = P0;
34  const int q0 = Q0;
35  const int q1 = Q1;
36  const int q2 = Q2;
37  const int q3 = Q3;
38  if (!no_p) {
39  P0 = p0 + av_clip(((p2 + 2 * p1 + 2 * p0 + 2 * q0 + q1 + 4) >> 3) - p0, -tc3, tc3);
40  P1 = p1 + av_clip(((p2 + p1 + p0 + q0 + 2) >> 2) - p1, -tc2, tc2);
41  P2 = p2 + av_clip(((2 * p3 + 3 * p2 + p1 + p0 + q0 + 4) >> 3) - p2, -tc, tc);
42  }
43  if (!no_q) {
44  Q0 = q0 + av_clip(((p1 + 2 * p0 + 2 * q0 + 2 * q1 + q2 + 4) >> 3) - q0, -tc3, tc3);
45  Q1 = q1 + av_clip(((p0 + q0 + q1 + q2 + 2) >> 2) - q1, -tc2, tc2);
46  Q2 = q2 + av_clip(((2 * q3 + 3 * q2 + q1 + q0 + p0 + 4) >> 3) - q2, -tc, tc);
47  }
48  pix += ystride;
49  }
50 }
51 
52 static void FUNC(loop_filter_luma_weak)(pixel *pix, const ptrdiff_t xstride, const ptrdiff_t ystride,
53  const int32_t tc, const int32_t beta, const uint8_t no_p, const uint8_t no_q, const int nd_p, const int nd_q)
54 {
55  const int tc_2 = tc >> 1;
56  for (int d = 0; d < 4; d++) {
57  const int p2 = P2;
58  const int p1 = P1;
59  const int p0 = P0;
60  const int q0 = Q0;
61  const int q1 = Q1;
62  const int q2 = Q2;
63  int delta0 = (9 * (q0 - p0) - 3 * (q1 - p1) + 8) >> 4;
64  if (abs(delta0) < 10 * tc) {
65  delta0 = av_clip(delta0, -tc, tc);
66  if (!no_p)
67  P0 = av_clip_pixel(p0 + delta0);
68  if (!no_q)
69  Q0 = av_clip_pixel(q0 - delta0);
70  if (!no_p && nd_p > 1) {
71  const int deltap1 = av_clip((((p2 + p0 + 1) >> 1) - p1 + delta0) >> 1, -tc_2, tc_2);
72  P1 = av_clip_pixel(p1 + deltap1);
73  }
74  if (!no_q && nd_q > 1) {
75  const int deltaq1 = av_clip((((q2 + q0 + 1) >> 1) - q1 - delta0) >> 1, -tc_2, tc_2);
76  Q1 = av_clip_pixel(q1 + deltaq1);
77  }
78  }
79  pix += ystride;
80  }
81 }
82 
83 static void FUNC(loop_filter_chroma_weak)(pixel *pix, const ptrdiff_t xstride, const ptrdiff_t ystride,
84  const int size, const int32_t tc, const uint8_t no_p, const uint8_t no_q)
85 {
86  for (int d = 0; d < size; d++) {
87  int delta0;
88  const int p1 = P1;
89  const int p0 = P0;
90  const int q0 = Q0;
91  const int q1 = Q1;
92  delta0 = av_clip((((q0 - p0) * 4) + p1 - q1 + 4) >> 3, -tc, tc);
93  if (!no_p)
94  P0 = av_clip_pixel(p0 + delta0);
95  if (!no_q)
96  Q0 = av_clip_pixel(q0 - delta0);
97  pix += ystride;
98  }
99 }
Q0
#define Q0
Definition: cavsdsp.c:39
q1
static const uint8_t q1[256]
Definition: twofish.c:100
av_clip
#define av_clip
Definition: common.h:98
P3
#define P3
Definition: hevcdsp_template.c:801
P1
#define P1
Definition: cavsdsp.c:37
loop_filter_luma_strong
static void FUNC() loop_filter_luma_strong(pixel *pix, const ptrdiff_t xstride, const ptrdiff_t ystride, const int32_t tc, const int32_t tc2, const int tc3, const uint8_t no_p, const uint8_t no_q)
Definition: h2656_deblock_template.c:25
loop_filter_chroma_weak
static void FUNC() loop_filter_chroma_weak(pixel *pix, const ptrdiff_t xstride, const ptrdiff_t ystride, const int size, const int32_t tc, const uint8_t no_p, const uint8_t no_q)
Definition: h2656_deblock_template.c:83
q0
static const uint8_t q0[256]
Definition: twofish.c:81
pixel
uint8_t pixel
Definition: tiny_ssim.c:41
abs
#define abs(x)
Definition: cuda_runtime.h:35
Q1
#define Q1
Definition: cavsdsp.c:40
size
int size
Definition: twinvq_data.h:10344
Q3
#define Q3
Definition: hevcdsp_template.c:808
Q2
#define Q2
Definition: cavsdsp.c:41
P2
#define P2
Definition: cavsdsp.c:36
av_clip_pixel
#define av_clip_pixel(a)
Definition: bit_depth_template.c:98
FUNC
#define FUNC(a)
Definition: bit_depth_template.c:104
loop_filter_luma_weak
static void FUNC() loop_filter_luma_weak(pixel *pix, const ptrdiff_t xstride, const ptrdiff_t ystride, const int32_t tc, const int32_t beta, const uint8_t no_p, const uint8_t no_q, const int nd_p, const int nd_q)
Definition: h2656_deblock_template.c:52
tc
#define tc
Definition: regdef.h:69
d
d
Definition: ffmpeg_filter.c:409
int32_t
int32_t
Definition: audioconvert.c:56
P0
#define P0
Definition: cavsdsp.c:38