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h264: fix warnings regarding uninitialised memory
[nihav.git] / nihav-itu / src / codecs / h264 / dsp / mc / x86 / luma_mc.rs
CommitLineData
42005e25
KS		 1use std::arch::asm;
2use super::super::clip_u8;
3
4const TMP_BUF_STRIDE: usize = 32;
5
6fn interp_block1(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize, hor: bool, avg0: bool) {
7 unsafe {
8 let step = if hor { 1 } else { sstride };
9 let avgidx = if avg0 { step * 2 } else { step * 3 };
10 let mut src = src.as_ptr();
11 let mut dst = dst.as_mut_ptr();
12 for _ in 0..h {
13 for _ in 0..w {
14 let t = clip_u8(( i16::from(*src)
15 - 5 * i16::from(*src.add(step))
16 + 20 * i16::from(*src.add(step * 2))
17 + 20 * i16::from(*src.add(step * 3))
18 - 5 * i16::from(*src.add(step * 4))
19 + i16::from(*src.add(step * 5))
20 + 16) >> 5);
21 *dst = ((u16::from(t) + u16::from(*src.add(avgidx)) + 1) >> 1) as u8;
22 src = src.add(1);
23 dst = dst.add(1);
24 }
25 dst = dst.sub(w).add(dstride);
26 src = src.sub(w).add(sstride);
27 }
28 }
29}
30
31fn interp_block2(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize, hor: bool) {
32 unsafe {
33 let step = if hor { 1 } else { sstride };
34 let mut pix = dst.as_mut_ptr();
35 let mut src = src.as_ptr();
36 for _ in 0..h {
37 for x in 0..w {
38 *pix.add(x) = clip_u8(( i16::from(*src)
39 - 5 * i16::from(*src.add(step))
40 + 20 * i16::from(*src.add(step * 2))
41 + 20 * i16::from(*src.add(step * 3))
42 - 5 * i16::from(*src.add(step * 4))
43 + i16::from(*src.add(step * 5))
44 + 16) >> 5);
45 src = src.add(1);
46 }
47 pix = pix.add(dstride);
48 src = src.sub(w);
49 src = src.add(sstride);
50 }
51 }
52}
53
54fn mc_avg_tmp(dst: &mut [u8], dstride: usize, w: usize, h: usize, tmp: &[u8], tmp2: &[u8]) {
55 unsafe {
56 let mut src1 = tmp.as_ptr();
57 let mut src2 = tmp2.as_ptr();
58 let mut dst = dst.as_mut_ptr();
59 for _ in 0..h {
60 for x in 0..w {
61 let a = *src1.add(x);
62 let b = *src2.add(x);
63 *dst.add(x) = ((u16::from(a) + u16::from(b) + 1) >> 1) as u8;
64 }
65 dst = dst.add(dstride);
66 src1 = src1.add(TMP_BUF_STRIDE);
67 src2 = src2.add(TMP_BUF_STRIDE);
68 }
69 }
70}
71
72fn h264_mc01(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
73 interp_block1(dst, dstride, &src[sstride * 2..], sstride, w, h, true, true);
74}
75
76fn h264_mc02(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
77 interp_block2(dst, dstride, &src[sstride * 2..], sstride, w, h, true);
78}
79
80fn h264_mc03(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
81 interp_block1(dst, dstride, &src[sstride * 2..], sstride, w, h, true, false);
82}
83
84fn h264_mc10(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
85 interp_block1(dst, dstride, &src[2..], sstride, w, h, false, true);
86}
87
88fn h264_mc11(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 89 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
90 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 91 h264_mc02(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
92 h264_mc20(&mut tmp2, TMP_BUF_STRIDE, src, sstride, w, h);
93 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
94}
95
96fn h264_mc12(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 97 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
98 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 99 h264_mc02(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
100 h264_mc22(&mut tmp2, TMP_BUF_STRIDE, src, sstride, w, h);
101 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
102}
103
104fn h264_mc13(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 105 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
106 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 107 h264_mc02(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
108 h264_mc20(&mut tmp2, TMP_BUF_STRIDE, &src[1..], sstride, w, h);
109 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
110}
111
112fn h264_mc20(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
113 interp_block2(dst, dstride, &src[2..], sstride, w, h, false);
114}
115
116fn h264_mc21(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 117 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
118 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 119 h264_mc22(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
120 h264_mc20(&mut tmp2, TMP_BUF_STRIDE, src, sstride, w, h);
121 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
122}
123
124fn h264_mc22(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee 125 let mut tmp: [i32; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 126 unsafe {
127 let mut src = src.as_ptr();
128 let mut dst = tmp.as_mut_ptr();
129 for _ in 0..h {
130 for _ in 0..w+5 {
131 *dst = i32::from(*src)
132 - 5 * i32::from(*src.add(sstride))
133 + 20 * i32::from(*src.add(sstride * 2))
134 + 20 * i32::from(*src.add(sstride * 3))
135 - 5 * i32::from(*src.add(sstride * 4))
136 + i32::from(*src.add(sstride * 5));
137 dst = dst.add(1);
138 src = src.add(1);
139 }
140 src = src.sub(w+5).add(sstride);
141 dst = dst.sub(w+5).add(TMP_BUF_STRIDE);
142 }
143 }
144 unsafe {
145 let mut dst = dst.as_mut_ptr();
146 let mut src = tmp.as_ptr();
147 for _ in 0..h {
148 for _ in 0..w {
149 *dst = clip_u8(((*src - 5 * *src.add(1) + 20 * *src.add(2) + 20 * *src.add(3) - 5 * *src.add(4) + *src.add(5) + 512) >> 10) as i16);
150 dst = dst.add(1);
151 src = src.add(1);
152 }
153 dst = dst.sub(w).add(dstride);
154 src = src.sub(w).add(TMP_BUF_STRIDE);
155 }
156 }
157}
158
159fn h264_mc23(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 160 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
161 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 162 h264_mc22(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
163 h264_mc20(&mut tmp2, TMP_BUF_STRIDE, &src[1..], sstride, w, h);
164 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
165}
166
167fn h264_mc30(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
168 interp_block1(dst, dstride, &src[2..], sstride, w, h, false, false);
169}
170
171fn h264_mc31(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 172 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
173 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 174 h264_mc20(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
175 h264_mc02(&mut tmp2, TMP_BUF_STRIDE, &src[sstride..], sstride, w, h);
176 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
177}
178
179fn h264_mc32(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 180 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
181 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 182 h264_mc22(&mut tmp, TMP_BUF_STRIDE, src, sstride, w, h);
183 h264_mc02(&mut tmp2, TMP_BUF_STRIDE, &src[sstride..], sstride, w, h);
184 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
185}
186
187fn h264_mc33(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, w: usize, h: usize) {
3fdbd1ee
KS		 188 let mut tmp : [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
189 let mut tmp2: [u8; TMP_BUF_STRIDE * 16] = unsafe { let arr = std::mem::MaybeUninit::uninit(); arr.assume_init() };
42005e25
KS		 190 h264_mc20(&mut tmp, TMP_BUF_STRIDE, &src[1..], sstride, w, h);
191 h264_mc02(&mut tmp2, TMP_BUF_STRIDE, &src[sstride..], sstride, w, h);
192 mc_avg_tmp(dst, dstride, w, h, &tmp, &tmp2);
193}
194
195macro_rules! luma_mc {
196 ($orig:ident, $func4:ident, $func8:ident, $func16:ident) => {
197 fn $func4(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, h: usize) {
198 $orig(dst, dstride, src, sstride, 4, h);
199 }
200 fn $func8(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, h: usize) {
201 $orig(dst, dstride, src, sstride, 8, h);
202 }
203 fn $func16(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, h: usize) {
204 $orig(dst, dstride, src, sstride, 16, h);
205 }
206 }
207}
208
209macro_rules! mc00_template {
210 ($func:ident, $load:expr, $store:expr) => {
211 fn $func(dst: &mut [u8], dstride: usize, src: &[u8], sstride: usize, h: usize) {
212 unsafe {
213 asm!(
214 "lea {tmps}, [{src} + {sstride} * 2]",
215 "lea {tmpd}, [{dst} + {dstride} * 2]",
216 "2:",
217 concat!($load, " xmm0, [{src}]"),
218 concat!($load, " xmm1, [{src} + {sstride}]"),
219 concat!($load, " xmm2, [{tmps}]"),
220 concat!($load, " xmm3, [{tmps} + {sstride}]"),
221 concat!($store, " [{dst}], xmm0"),
222 "lea {src}, [{src} + {sstride}*4]",
223 concat!($store, " [{dst} + {dstride}], xmm1"),
224 "lea {tmps}, [{tmps} + {sstride}*4]",
225 concat!($store, " [{tmpd}], xmm2"),
226 "lea {dst}, [{dst} + {dstride}*4]",
227 concat!($store, " [{tmpd} + {dstride}], xmm3"),
228 "lea {tmpd}, [{tmpd} + {dstride}*4]",
229 "sub {h}, 4",
230 "jnz 2b",
231 dst = inout(reg) dst.as_mut_ptr() => _,
232 dstride = in(reg) dstride,
233 src = inout(reg) src.as_ptr() => _,
234 sstride = in(reg) sstride,
235 h = inout(reg) h => _,
236 tmps = out(reg) _,
237 tmpd = out(reg) _,
238 out("xmm0") _,
239 out("xmm1") _,
240 out("xmm2") _,
241 out("xmm3") _,
242 );
243 }
244 }
245 }
246}
247
248mc00_template!(h264_mc00_16, "movups", "movaps");
249mc00_template!(h264_mc00_8, "movq", "movq");
250mc00_template!(h264_mc00_4, "movd", "movd");
251
252luma_mc!(h264_mc01, h264_mc01_4, h264_mc01_8, h264_mc01_16);
253luma_mc!(h264_mc02, h264_mc02_4, h264_mc02_8, h264_mc02_16);
254luma_mc!(h264_mc03, h264_mc03_4, h264_mc03_8, h264_mc03_16);
255luma_mc!(h264_mc10, h264_mc10_4, h264_mc10_8, h264_mc10_16);
256luma_mc!(h264_mc11, h264_mc11_4, h264_mc11_8, h264_mc11_16);
257luma_mc!(h264_mc12, h264_mc12_4, h264_mc12_8, h264_mc12_16);
258luma_mc!(h264_mc13, h264_mc13_4, h264_mc13_8, h264_mc13_16);
259luma_mc!(h264_mc20, h264_mc20_4, h264_mc20_8, h264_mc20_16);
260luma_mc!(h264_mc21, h264_mc21_4, h264_mc21_8, h264_mc21_16);
261luma_mc!(h264_mc22, h264_mc22_4, h264_mc22_8, h264_mc22_16);
262luma_mc!(h264_mc23, h264_mc23_4, h264_mc23_8, h264_mc23_16);
263luma_mc!(h264_mc30, h264_mc30_4, h264_mc30_8, h264_mc30_16);
264luma_mc!(h264_mc31, h264_mc31_4, h264_mc31_8, h264_mc31_16);
265luma_mc!(h264_mc32, h264_mc32_4, h264_mc32_8, h264_mc32_16);
266luma_mc!(h264_mc33, h264_mc33_4, h264_mc33_8, h264_mc33_16);
267
268pub const H264_LUMA_INTERP: &[[super::super::MCFunc; 16]; 3] = &[
269 [
270 h264_mc00_4, h264_mc01_4, h264_mc02_4, h264_mc03_4,
271 h264_mc10_4, h264_mc11_4, h264_mc12_4, h264_mc13_4,
272 h264_mc20_4, h264_mc21_4, h264_mc22_4, h264_mc23_4,
273 h264_mc30_4, h264_mc31_4, h264_mc32_4, h264_mc33_4
274 ], [
275 h264_mc00_8, h264_mc01_8, h264_mc02_8, h264_mc03_8,
276 h264_mc10_8, h264_mc11_8, h264_mc12_8, h264_mc13_8,
277 h264_mc20_8, h264_mc21_8, h264_mc22_8, h264_mc23_8,
278 h264_mc30_8, h264_mc31_8, h264_mc32_8, h264_mc33_8
279 ], [
280 h264_mc00_16, h264_mc01_16, h264_mc02_16, h264_mc03_16,
281 h264_mc10_16, h264_mc11_16, h264_mc12_16, h264_mc13_16,
282 h264_mc20_16, h264_mc21_16, h264_mc22_16, h264_mc23_16,
283 h264_mc30_16, h264_mc31_16, h264_mc32_16, h264_mc33_16
284 ]
285];
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