FFmpeg
vp9dsp.c
Go to the documentation of this file.
1 /*
2  * VP9 compatible video decoder
3  *
4  * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
5  * Copyright (C) 2013 Clément Bœsch <u pkh me>
6  *
7  * This file is part of FFmpeg.
8  *
9  * FFmpeg is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * FFmpeg is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with FFmpeg; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include "libavutil/avassert.h"
25 #include "libavutil/common.h"
26 #include "libavutil/mem_internal.h"
27 
28 #include "vp9dsp.h"
29 
30 const DECLARE_ALIGNED(16, int16_t, ff_vp9_subpel_filters)[3][16][8] = {
32  { 0, 0, 0, 128, 0, 0, 0, 0 },
33  { 0, 1, -5, 126, 8, -3, 1, 0 },
34  { -1, 3, -10, 122, 18, -6, 2, 0 },
35  { -1, 4, -13, 118, 27, -9, 3, -1 },
36  { -1, 4, -16, 112, 37, -11, 4, -1 },
37  { -1, 5, -18, 105, 48, -14, 4, -1 },
38  { -1, 5, -19, 97, 58, -16, 5, -1 },
39  { -1, 6, -19, 88, 68, -18, 5, -1 },
40  { -1, 6, -19, 78, 78, -19, 6, -1 },
41  { -1, 5, -18, 68, 88, -19, 6, -1 },
42  { -1, 5, -16, 58, 97, -19, 5, -1 },
43  { -1, 4, -14, 48, 105, -18, 5, -1 },
44  { -1, 4, -11, 37, 112, -16, 4, -1 },
45  { -1, 3, -9, 27, 118, -13, 4, -1 },
46  { 0, 2, -6, 18, 122, -10, 3, -1 },
47  { 0, 1, -3, 8, 126, -5, 1, 0 },
48  }, [FILTER_8TAP_SHARP] = {
49  { 0, 0, 0, 128, 0, 0, 0, 0 },
50  { -1, 3, -7, 127, 8, -3, 1, 0 },
51  { -2, 5, -13, 125, 17, -6, 3, -1 },
52  { -3, 7, -17, 121, 27, -10, 5, -2 },
53  { -4, 9, -20, 115, 37, -13, 6, -2 },
54  { -4, 10, -23, 108, 48, -16, 8, -3 },
55  { -4, 10, -24, 100, 59, -19, 9, -3 },
56  { -4, 11, -24, 90, 70, -21, 10, -4 },
57  { -4, 11, -23, 80, 80, -23, 11, -4 },
58  { -4, 10, -21, 70, 90, -24, 11, -4 },
59  { -3, 9, -19, 59, 100, -24, 10, -4 },
60  { -3, 8, -16, 48, 108, -23, 10, -4 },
61  { -2, 6, -13, 37, 115, -20, 9, -4 },
62  { -2, 5, -10, 27, 121, -17, 7, -3 },
63  { -1, 3, -6, 17, 125, -13, 5, -2 },
64  { 0, 1, -3, 8, 127, -7, 3, -1 },
65  }, [FILTER_8TAP_SMOOTH] = {
66  { 0, 0, 0, 128, 0, 0, 0, 0 },
67  { -3, -1, 32, 64, 38, 1, -3, 0 },
68  { -2, -2, 29, 63, 41, 2, -3, 0 },
69  { -2, -2, 26, 63, 43, 4, -4, 0 },
70  { -2, -3, 24, 62, 46, 5, -4, 0 },
71  { -2, -3, 21, 60, 49, 7, -4, 0 },
72  { -1, -4, 18, 59, 51, 9, -4, 0 },
73  { -1, -4, 16, 57, 53, 12, -4, -1 },
74  { -1, -4, 14, 55, 55, 14, -4, -1 },
75  { -1, -4, 12, 53, 57, 16, -4, -1 },
76  { 0, -4, 9, 51, 59, 18, -4, -1 },
77  { 0, -4, 7, 49, 60, 21, -3, -2 },
78  { 0, -4, 5, 46, 62, 24, -3, -2 },
79  { 0, -4, 4, 43, 63, 26, -2, -2 },
80  { 0, -3, 2, 41, 63, 29, -2, -2 },
81  { 0, -3, 1, 38, 64, 32, -1, -3 },
82  }
83 };
84 
85 
86 av_cold void ff_vp9dsp_init(VP9DSPContext *dsp, int bpp, int bitexact)
87 {
88  if (bpp == 8) {
89  ff_vp9dsp_init_8(dsp);
90  } else if (bpp == 10) {
91  ff_vp9dsp_init_10(dsp);
92  } else {
93  av_assert0(bpp == 12);
94  ff_vp9dsp_init_12(dsp);
95  }
96 
97  if (ARCH_AARCH64) ff_vp9dsp_init_aarch64(dsp, bpp);
98  if (ARCH_ARM) ff_vp9dsp_init_arm(dsp, bpp);
99  if (ARCH_X86) ff_vp9dsp_init_x86(dsp, bpp, bitexact);
100  if (ARCH_MIPS) ff_vp9dsp_init_mips(dsp, bpp);
101  if (ARCH_LOONGARCH) ff_vp9dsp_init_loongarch(dsp, bpp);
102 }
mem_internal.h
VP9DSPContext
Definition: vp9dsp.h:39
ff_vp9_subpel_filters
const int16_t ff_vp9_subpel_filters[3][16][8]
Definition: vp9dsp.c:30
ff_vp9dsp_init_10
void ff_vp9dsp_init_10(VP9DSPContext *dsp)
ff_vp9dsp_init_arm
av_cold void ff_vp9dsp_init_arm(VP9DSPContext *dsp, int bpp)
Definition: vp9dsp_init_arm.c:244
ff_vp9dsp_init_loongarch
av_cold void ff_vp9dsp_init_loongarch(VP9DSPContext *dsp, int bpp)
Definition: vp9dsp_init_loongarch.c:83
FILTER_8TAP_SHARP
@ FILTER_8TAP_SHARP
Definition: vp9.h:67
avassert.h
av_cold
#define av_cold
Definition: attributes.h:90
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
ff_vp9dsp_init
av_cold void ff_vp9dsp_init(VP9DSPContext *dsp, int bpp, int bitexact)
Definition: vp9dsp.c:86
vp9dsp.h
ff_vp9dsp_init_8
void ff_vp9dsp_init_8(VP9DSPContext *dsp)
FILTER_8TAP_REGULAR
@ FILTER_8TAP_REGULAR
Definition: vp9.h:66
ff_vp9dsp_init_aarch64
av_cold void ff_vp9dsp_init_aarch64(VP9DSPContext *dsp, int bpp)
Definition: vp9dsp_init_aarch64.c:244
DECLARE_ALIGNED
#define DECLARE_ALIGNED(n, t, v)
Definition: mem.h:116
common.h
FILTER_8TAP_SMOOTH
@ FILTER_8TAP_SMOOTH
Definition: vp9.h:65
ff_vp9dsp_init_12
void ff_vp9dsp_init_12(VP9DSPContext *dsp)
ff_vp9dsp_init_mips
av_cold void ff_vp9dsp_init_mips(VP9DSPContext *dsp, int bpp)
Definition: vp9dsp_init_mips.c:212
ff_vp9dsp_init_x86
void ff_vp9dsp_init_x86(VP9DSPContext *dsp, int bpp, int bitexact)
Definition: vp9dsp_init.c:216