1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
use nihav_core::frame::*;
use nihav_codec_support::codecs::blockdsp::edge_emu;
#[allow(clippy::too_many_arguments)]
pub fn get_block(dst: &mut [u8], dstride: usize, src: NAVideoBufferRef<u8>, comp: usize,
dx: usize, dy: usize, mv_x: i16, mv_y: i16)
{
let (w, h) = src.get_dimensions(comp);
let sx = (dx as isize) + (mv_x as isize);
let sy = (dy as isize) + (mv_y as isize);
if (sx - 2 < 0) || (sx + 8 + 2 > (w as isize)) ||
(sy - 2 < 0) || (sy + 8 + 2 > (h as isize)) {
edge_emu(&src, sx - 2, sy - 2, 8 + 2 + 2, 8 + 2 + 2,
dst, dstride, comp, 0);
} else {
let sstride = src.get_stride(comp);
let soff = src.get_offset(comp);
let sdta = src.get_data();
let sbuf: &[u8] = sdta.as_slice();
let saddr = soff + ((sx - 2) as usize) + ((sy - 2) as usize) * sstride;
let src = &sbuf[saddr..];
for (dline, sline) in dst.chunks_mut(dstride).zip(src.chunks(sstride)).take(12) {
dline[..12].copy_from_slice(&sline[..12]);
}
}
}
pub fn calc_variance(src: &[u8], stride: usize) -> u16 {
let mut sum = 0;
let mut ssum = 0;
for line in src.chunks(stride * 2).take(4) {
for el in line.iter().take(8).step_by(2) {
let pix = u32::from(*el);
sum += pix;
ssum += pix * pix;
}
}
((ssum * 16 - sum * sum) >> 8) as u16
}
macro_rules! mc_filter {
(bilinear; $a: expr, $b: expr, $c: expr) => {
((u16::from($a) * (8 - $c) + u16::from($b) * $c + 4) >> 3) as u8
};
(bicubic; $src: expr, $off: expr, $step: expr, $coeffs: expr) => {
((i32::from($src[$off - $step] ) * i32::from($coeffs[0]) +
i32::from($src[$off] ) * i32::from($coeffs[1]) +
i32::from($src[$off + $step] ) * i32::from($coeffs[2]) +
i32::from($src[$off + $step * 2]) * i32::from($coeffs[3]) + 64) >> 7).min(255).max(0) as u8
}
}
//#[allow(snake_case)]
#[cfg(not(target_arch = "x86_64"))]
pub fn mc_bilinear(dst: &mut [u8], dstride: usize, src: &[u8], mut soff: usize, sstride: usize, mx: u16, my: u16) {
if my == 0 {
for dline in dst.chunks_mut(dstride).take(8) {
for i in 0..8 {
dline[i] = mc_filter!(bilinear; src[soff + i], src[soff + i + 1], mx);
}
soff += sstride;
}
} else if mx == 0 {
for dline in dst.chunks_mut(dstride).take(8) {
for i in 0..8 {
dline[i] = mc_filter!(bilinear; src[soff + i], src[soff + i + sstride], my);
}
soff += sstride;
}
} else {
let mut tmp = [0u8; 8];
for i in 0..8 {
tmp[i] = mc_filter!(bilinear; src[soff + i], src[soff + i + 1], mx);
}
soff += sstride;
for dline in dst.chunks_mut(dstride).take(8) {
for i in 0..8 {
let cur = mc_filter!(bilinear; src[soff + i], src[soff + i + 1], mx);
dline[i] = mc_filter!(bilinear; tmp[i], cur, my);
tmp[i] = cur;
}
soff += sstride;
}
}
}
#[cfg(target_arch = "x86_64")]
use std::arch::x86_64::*;
#[cfg(target_arch = "x86_64")]
pub fn mc_bilinear(dst: &mut [u8], dstride: usize, src: &[u8], soff: usize, sstride: usize, mx: u16, my: u16) {
if my == 0 {
unsafe {
let mut sptr = src[soff..].as_ptr();
let mut dptr = dst.as_mut_ptr();
let bias = _mm_set1_epi16(4);
let a = _mm_set1_epi16((8 - mx) as i16);
let b = _mm_set1_epi16( mx as i16);
let z = _mm_setzero_si128();
for _ in 0..8 {
let s0 = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr as *const __m128i), z);
let s1 = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr.add(1) as *const __m128i), z);
let s0 = _mm_mullo_epi16(s0, a);
let s1 = _mm_mullo_epi16(s1, b);
sptr = sptr.add(sstride);
let t = _mm_srai_epi16(_mm_add_epi16(_mm_add_epi16(s0, bias), s1), 3);
let t = _mm_packus_epi16(t, t);
_mm_storel_epi64(dptr as *mut __m128i, t);
dptr = dptr.add(dstride);
}
}
} else if mx == 0 {
unsafe {
let mut sptr = src[soff..].as_ptr();
let mut dptr = dst.as_mut_ptr();
let bias = _mm_set1_epi16(4);
let a = _mm_set1_epi16((8 - my) as i16);
let b = _mm_set1_epi16( my as i16);
let z = _mm_setzero_si128();
let mut last = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr as *const __m128i), z);
last = _mm_mullo_epi16(last, a);
sptr = sptr.add(sstride);
for _ in 0..8 {
let s = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr as *const __m128i), z);
sptr = sptr.add(sstride);
let s1 = _mm_mullo_epi16(s, b);
let t = _mm_srai_epi16(_mm_add_epi16(_mm_add_epi16(last, bias), s1), 3);
last = _mm_mullo_epi16(s, a);
let t = _mm_packus_epi16(t, t);
_mm_storel_epi64(dptr as *mut __m128i, t);
dptr = dptr.add(dstride);
}
}
} else {
unsafe {
let mut sptr = src[soff..].as_ptr();
let mut dptr = dst.as_mut_ptr();
let bias = _mm_set1_epi16(4);
let a = _mm_set1_epi16((8 - mx) as i16);
let b = _mm_set1_epi16( mx as i16);
let c = _mm_set1_epi16((8 - my) as i16);
let d = _mm_set1_epi16( my as i16);
let z = _mm_setzero_si128();
let s0 = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr as *const __m128i), z);
let s1 = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr.add(1) as *const __m128i), z);
let s0 = _mm_mullo_epi16(s0, a);
let s1 = _mm_mullo_epi16(s1, b);
let t = _mm_srai_epi16(_mm_add_epi16(_mm_add_epi16(s0, bias), s1), 3);
let mut last = _mm_mullo_epi16(t, c);
sptr = sptr.add(sstride);
for _ in 0..8 {
let s0 = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr as *const __m128i), z);
let s1 = _mm_unpacklo_epi8(_mm_loadl_epi64(sptr.add(1) as *const __m128i), z);
let s0 = _mm_mullo_epi16(s0, a);
let s1 = _mm_mullo_epi16(s1, b);
sptr = sptr.add(sstride);
let t = _mm_srai_epi16(_mm_add_epi16(_mm_add_epi16(s0, bias), s1), 3);
let t1 = _mm_add_epi16(_mm_add_epi16(last, bias), _mm_mullo_epi16(t, d));
last = _mm_mullo_epi16(t, c);
let out = _mm_srai_epi16(t1, 3);
_mm_storel_epi64(dptr as *mut __m128i, _mm_packus_epi16(out, out));
dptr = dptr.add(dstride);
}
}
}
}
#[allow(clippy::trivially_copy_pass_by_ref)]
pub fn mc_bicubic(dst: &mut [u8], dstride: usize, src: &[u8], mut soff: usize, sstride: usize, coeffs_w: &[i16; 4], coeffs_h: &[i16; 4]) {
if coeffs_h[1] == 128 {
for dline in dst.chunks_mut(dstride).take(8) {
for i in 0..8 {
dline[i] = mc_filter!(bicubic; src, soff + i, 1, coeffs_w);
}
soff += sstride;
}
} else if coeffs_w[1] == 128 { // horizontal-only interpolation
for dline in dst.chunks_mut(dstride).take(8) {
for i in 0..8 {
dline[i] = mc_filter!(bicubic; src, soff + i, sstride, coeffs_h);
}
soff += sstride;
}
} else {
let mut buf = [0u8; 16 * 11];
soff -= sstride;
for dline in buf.chunks_mut(16) {
for i in 0..8 {
dline[i] = mc_filter!(bicubic; src, soff + i, 1, coeffs_w);
}
soff += sstride;
}
let mut soff = 16;
for dline in dst.chunks_mut(dstride).take(8) {
for i in 0..8 {
dline[i] = mc_filter!(bicubic; buf, soff + i, 16, coeffs_h);
}
soff += 16;
}
}
}
|
