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1 | mod mc; | |
2 | pub use mc::H264MC; | |
3 | ||
4 | pub const CHROMA_QUANTS: [u8; 52] = [ | |
5 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
6 | 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 29, 30, | |
7 | 31, 32, 32, 33, 34, 34, 35, 35, 36, 36, 37, 37, 37, 38, 38, 38, | |
8 | 39, 39, 39, 39 | |
9 | ]; | |
10 | ||
11 | pub const CHROMA_DC_SCAN: [usize; 4] = [ 0, 1, 2, 3]; | |
12 | pub const ZIGZAG: [usize; 16] = [ | |
13 | 0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15 | |
14 | ]; | |
15 | pub const ZIGZAG1: [usize; 15] = [ | |
16 | 0, 3, 7, 4, 1, 2, 5, 8, 11, 12, 9, 6, 10, 13, 14 | |
17 | ]; | |
18 | /*pub const IL_SCAN: [usize; 16] = [ | |
19 | 0, 4, 1, 8, 12, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15 | |
20 | ];*/ | |
21 | pub const ZIGZAG8X8: [usize; 64] = [ | |
22 | 0, 1, 8, 16, 9, 2, 3, 10, | |
23 | 17, 24, 32, 25, 18, 11, 4, 5, | |
24 | 12, 19, 26, 33, 40, 48, 41, 34, | |
25 | 27, 20, 13, 6, 7, 14, 21, 28, | |
26 | 35, 42, 49, 56, 57, 50, 43, 36, | |
27 | 29, 22, 15, 23, 30, 37, 44, 51, | |
28 | 58, 59, 52, 45, 38, 31, 39, 46, | |
29 | 53, 60, 61, 54, 47, 55, 62, 63 | |
30 | ]; | |
31 | ||
32 | const LEVEL_SCALE: [[i16; 6]; 3] = [ | |
33 | [ 10, 11, 13, 14, 16, 18 ], | |
34 | [ 16, 18, 20, 23, 25, 29 ], | |
35 | [ 13, 14, 16, 18, 20, 23 ] | |
36 | ]; | |
37 | ||
38 | pub fn chroma_dc_transform(blk: &mut [i16; 4], qp: u8) { | |
39 | let t0 = blk[0] + blk[2]; | |
40 | let t1 = blk[0] - blk[2]; | |
41 | let t2 = blk[1] + blk[3]; | |
42 | let t3 = blk[1] - blk[3]; | |
43 | blk[0] = t0 + t2; | |
44 | blk[1] = t0 - t2; | |
45 | blk[2] = t1 + t3; | |
46 | blk[3] = t1 - t3; | |
47 | if qp < 6 { | |
48 | let mul = LEVEL_SCALE[0][qp as usize]; | |
49 | for el in blk.iter_mut() { | |
50 | *el = el.wrapping_mul(mul) >> 1; | |
51 | } | |
52 | } else { | |
53 | let mul = LEVEL_SCALE[0][(qp % 6) as usize]; | |
54 | let shift = qp / 6 - 1; | |
55 | for el in blk.iter_mut() { | |
56 | *el = el.wrapping_mul(mul) << shift; | |
57 | } | |
58 | } | |
59 | } | |
60 | ||
61 | macro_rules! transform { | |
62 | (luma_dc; $a: expr, $b: expr, $c: expr, $d: expr) => ({ | |
63 | let t0 = $a.wrapping_add($c); | |
64 | let t1 = $a.wrapping_sub($c); | |
65 | let t2 = $b.wrapping_add($d); | |
66 | let t3 = $b.wrapping_sub($d); | |
67 | $a = t0.wrapping_add(t2); | |
68 | $b = t1.wrapping_add(t3); | |
69 | $c = t1.wrapping_sub(t3); | |
70 | $d = t0.wrapping_sub(t2); | |
71 | }); | |
72 | ($a: expr, $b: expr, $c: expr, $d: expr, $shift: expr) => ({ | |
73 | let t0 = $a.wrapping_add($c); | |
74 | let t1 = $a.wrapping_sub($c); | |
75 | let t2 = ($b >> 1).wrapping_sub($d); | |
76 | let t3 = $b.wrapping_add($d >> 1); | |
77 | let bias = 1 << $shift >> 1; | |
78 | $a = t0.wrapping_add(t3).wrapping_add(bias) >> $shift; | |
79 | $b = t1.wrapping_add(t2).wrapping_add(bias) >> $shift; | |
80 | $c = t1.wrapping_sub(t2).wrapping_add(bias) >> $shift; | |
81 | $d = t0.wrapping_sub(t3).wrapping_add(bias) >> $shift; | |
82 | }); | |
83 | ($a: expr, $b: expr, $c: expr, $d: expr, $e: expr, $f: expr, $g: expr, $h: expr) => { | |
84 | let e0 = $a + $e; | |
85 | let e1 = -$d + $f - $h - ($h >> 1); | |
86 | let e2 = $a - $e; | |
87 | let e3 = $b + $h - $d - ($d >> 1); | |
88 | let e4 = ($c >> 1) - $g; | |
89 | let e5 = -$b + $h + $f + ($f >> 1); | |
90 | let e6 = $c + ($g >> 1); | |
91 | let e7 = $d + $f + $b + ($b >> 1); | |
92 | ||
93 | let f0 = e0 + e6; | |
94 | let f1 = e1 + (e7 >> 2); | |
95 | let f2 = e2 + e4; | |
96 | let f3 = e3 + (e5 >> 2); | |
97 | let f4 = e2 - e4; | |
98 | let f5 = (e3 >> 2) - e5; | |
99 | let f6 = e0 - e6; | |
100 | let f7 = e7 - (e1 >> 2); | |
101 | ||
102 | $a = f0 + f7; | |
103 | $b = f2 + f5; | |
104 | $c = f4 + f3; | |
105 | $d = f6 + f1; | |
106 | $e = f6 - f1; | |
107 | $f = f4 - f3; | |
108 | $g = f2 - f5; | |
109 | $h = f0 - f7; | |
110 | }; | |
111 | } | |
112 | ||
113 | pub fn idct_luma_dc(blk: &mut [i16; 16], qp: u8) { | |
114 | if qp < 12 { | |
115 | let mul = LEVEL_SCALE[0][(qp % 6) as usize]; | |
116 | let shift = 2 - qp / 6; | |
117 | let bias = 1 << shift >> 1; | |
118 | for el in blk.iter_mut() { | |
119 | *el = el.wrapping_mul(mul).wrapping_add(bias) >> shift; | |
120 | } | |
121 | } else { | |
122 | let mul = LEVEL_SCALE[0][(qp % 6) as usize]; | |
123 | let shift = qp / 6 - 2; | |
124 | for el in blk.iter_mut() { | |
125 | *el = el.wrapping_mul(mul) << shift; | |
126 | } | |
127 | } | |
128 | for i in 0..4 { | |
129 | transform!(luma_dc; blk[i], blk[i + 4], blk[i + 8], blk[i + 12]); | |
130 | } | |
131 | for row in blk.chunks_mut(4) { | |
132 | transform!(luma_dc; row[0], row[1], row[2], row[3]); | |
133 | } | |
134 | } | |
135 | ||
136 | pub fn idct(blk: &mut [i16; 16], qp: u8, quant_dc: bool) { | |
137 | const BLK_INDEX: [usize; 16] = [ | |
138 | 0, 2, 0, 2, | |
139 | 2, 1, 2, 1, | |
140 | 0, 2, 0, 2, | |
141 | 2, 1, 2, 1 | |
142 | ]; | |
143 | let qidx = (qp % 6) as usize; | |
144 | let shift = qp / 6; | |
145 | let start = if quant_dc { 0 } else { 1 }; | |
146 | for (el, &idx) in blk.iter_mut().zip(BLK_INDEX.iter()).skip(start) { | |
147 | *el = (*el * LEVEL_SCALE[idx][qidx]) << shift; | |
148 | } | |
149 | for row in blk.chunks_mut(4) { | |
150 | transform!(row[0], row[1], row[2], row[3], 0); | |
151 | } | |
152 | for i in 0..4 { | |
153 | transform!(blk[i], blk[i + 4], blk[i + 8], blk[i + 12], 6); | |
154 | } | |
155 | } | |
156 | ||
157 | pub fn idct_dc(blk: &mut [i16; 16], qp: u8, quant_dc: bool) { | |
158 | let dc = if quant_dc { | |
159 | (blk[0] * LEVEL_SCALE[0][(qp % 6) as usize]) << (qp / 6) | |
160 | } else { | |
161 | blk[0] | |
162 | }; | |
163 | *blk = [(dc + 0x20) >> 6; 16]; | |
164 | } | |
165 | ||
166 | const QMAT_8X8: [[u8; 16]; 6] = [ | |
167 | [ | |
168 | 20, 19, 25, 19, | |
169 | 19, 18, 24, 18, | |
170 | 25, 24, 32, 24, | |
171 | 19, 18, 24, 18 | |
172 | ], [ | |
173 | 22, 21, 28, 21, | |
174 | 21, 19, 26, 19, | |
175 | 28, 26, 35, 26, | |
176 | 21, 19, 26, 19 | |
177 | ], [ | |
178 | 26, 24, 33, 24, | |
179 | 24, 23, 31, 23, | |
180 | 33, 31, 42, 31, | |
181 | 24, 23, 31, 23 | |
182 | ], [ | |
183 | 28, 26, 35, 26, | |
184 | 26, 25, 33, 25, | |
185 | 35, 33, 45, 33, | |
186 | 26, 25, 33, 25 | |
187 | ], [ | |
188 | 32, 30, 40, 30, | |
189 | 30, 28, 38, 28, | |
190 | 40, 38, 51, 38, | |
191 | 30, 28, 38, 28 | |
192 | ], [ | |
193 | 36, 34, 46, 34, | |
194 | 34, 32, 43, 32, | |
195 | 46, 43, 58, 43, | |
196 | 34, 32, 43, 32 | |
197 | ] | |
198 | ]; | |
199 | ||
200 | pub fn dequant8x8(blk: &mut [i16; 64], slist: &[u8; 64]) { | |
201 | for (el, &scan) in blk.iter_mut().zip(ZIGZAG8X8.iter()) { | |
202 | if *el != 0 { | |
203 | *el = el.wrapping_mul(i16::from(slist[scan])); | |
204 | } | |
205 | } | |
206 | } | |
207 | ||
208 | pub fn idct8x8(blk: &mut [i16; 64], qp: u8) { | |
209 | let mut tmp = [0i32; 64]; | |
210 | let qmat = &QMAT_8X8[(qp % 6) as usize]; | |
211 | if qp >= 36 { | |
212 | let shift = qp / 6 - 6; | |
213 | for (i, (dst, &src)) in tmp.iter_mut().zip(blk.iter()).enumerate() { | |
214 | let x = i & 7; | |
215 | let y = i >> 3; | |
216 | let idx = (x & 3) + (y & 3) * 4; | |
217 | *dst = i32::from(src).wrapping_mul(i32::from(qmat[idx])) << shift; | |
218 | } | |
219 | } else { | |
220 | let shift = 6 - qp / 6; | |
221 | let bias = (1 << shift) >> 1; | |
222 | for (i, (dst, &src)) in tmp.iter_mut().zip(blk.iter()).enumerate() { | |
223 | let x = i & 7; | |
224 | let y = i >> 3; | |
225 | let idx = (x & 3) + (y & 3) * 4; | |
226 | *dst = i32::from(src).wrapping_mul(i32::from(qmat[idx])).wrapping_add(bias) >> shift; | |
227 | } | |
228 | } | |
229 | for row in tmp.chunks_mut(8) { | |
230 | transform!(row[0], row[1], row[2], row[3], row[4], row[5], row[6], row[7]); | |
231 | } | |
232 | for col in 0..8 { | |
233 | transform!(tmp[col], tmp[col + 8], tmp[col + 8 * 2], tmp[col + 8 * 3], | |
234 | tmp[col + 8 * 4], tmp[col + 8 * 5], tmp[col + 8 * 6], tmp[col + 8 * 7]); | |
235 | } | |
236 | for (dst, &src) in blk.iter_mut().zip(tmp.iter()) { | |
237 | *dst = ((src + 0x20) >> 6) as i16; | |
238 | } | |
239 | } | |
240 | ||
241 | pub fn add_coeffs(dst: &mut [u8], offset: usize, stride: usize, coeffs: &[i16]) { | |
242 | let out = &mut dst[offset..][..stride * 3 + 4]; | |
243 | for (line, src) in out.chunks_mut(stride).take(4).zip(coeffs.chunks(4)) { | |
244 | for (dst, src) in line.iter_mut().take(4).zip(src.iter()) { | |
245 | *dst = (i32::from(*dst) + i32::from(*src)).max(0).min(255) as u8; | |
246 | } | |
247 | } | |
248 | } | |
249 | ||
250 | pub fn add_coeffs8(dst: &mut [u8], offset: usize, stride: usize, coeffs: &[i16; 64]) { | |
251 | let out = &mut dst[offset..]; | |
252 | for (line, src) in out.chunks_mut(stride).take(8).zip(coeffs.chunks(8)) { | |
253 | for (dst, src) in line.iter_mut().take(8).zip(src.iter()) { | |
254 | *dst = (i32::from(*dst) + i32::from(*src)).max(0).min(255) as u8; | |
255 | } | |
256 | } | |
257 | } | |
258 | ||
259 | fn clip8(val: i16) -> u8 { val.max(0).min(255) as u8 } | |
260 | ||
261 | fn ipred_dc128(buf: &mut [u8], stride: usize, bsize: usize) { | |
262 | for row in buf.chunks_mut(stride).take(bsize) { | |
263 | for el in row[..bsize].iter_mut() { | |
264 | *el = 128; | |
265 | } | |
266 | } | |
267 | } | |
268 | fn ipred_ver(buf: &mut [u8], stride: usize, top: &[u8], bsize: usize) { | |
269 | for row in buf.chunks_mut(stride).take(bsize) { | |
270 | row[..bsize].copy_from_slice(&top[..bsize]); | |
271 | } | |
272 | } | |
273 | fn ipred_hor(buf: &mut [u8], stride: usize, left: &[u8], bsize: usize) { | |
274 | for (row, &left) in buf.chunks_mut(stride).zip(left[1..].iter()).take(bsize) { | |
275 | for el in row[..bsize].iter_mut() { | |
276 | *el = left; | |
277 | } | |
278 | } | |
279 | } | |
280 | fn ipred_dc(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8], bsize: usize, shift: u8) { | |
281 | let mut adc: u16 = 0; | |
282 | for i in 0..bsize { adc += u16::from(top[i]); } | |
283 | for i in 0..bsize { adc += u16::from(left[i + 1]); } | |
284 | let dc = ((adc + (1 << (shift - 1))) >> shift) as u8; | |
285 | ||
286 | for row in buf.chunks_mut(stride).take(bsize) { | |
287 | for el in row[..bsize].iter_mut() { | |
288 | *el = dc; | |
289 | } | |
290 | } | |
291 | } | |
292 | fn ipred_left_dc(buf: &mut [u8], stride: usize, left: &[u8], bsize: usize, shift: u8) { | |
293 | let mut adc: u16 = 0; | |
294 | for i in 0..bsize { adc += u16::from(left[i + 1]); } | |
295 | let dc = ((adc + (1 << (shift - 1))) >> shift) as u8; | |
296 | ||
297 | for row in buf.chunks_mut(stride).take(bsize) { | |
298 | for el in row[..bsize].iter_mut() { | |
299 | *el = dc; | |
300 | } | |
301 | } | |
302 | } | |
303 | fn ipred_top_dc(buf: &mut [u8], stride: usize, top: &[u8], bsize: usize, shift: u8) { | |
304 | let mut adc: u16 = 0; | |
305 | for i in 0..bsize { adc += u16::from(top[i]); } | |
306 | let dc = ((adc + (1 << (shift - 1))) >> shift) as u8; | |
307 | ||
308 | for row in buf.chunks_mut(stride).take(bsize) { | |
309 | for el in row[..bsize].iter_mut() { | |
310 | *el = dc; | |
311 | } | |
312 | } | |
313 | } | |
314 | ||
315 | fn load(dst: &mut [u16], src: &[u8]) { | |
316 | for (dst, &src) in dst.iter_mut().zip(src.iter()) { | |
317 | *dst = u16::from(src); | |
318 | } | |
319 | } | |
320 | ||
321 | fn ipred_4x4_ver(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8], _tr: &[u8]) { | |
322 | ipred_ver(buf, stride, top, 4); | |
323 | } | |
324 | fn ipred_4x4_hor(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8], _tr: &[u8]) { | |
325 | ipred_hor(buf, stride, left, 4); | |
326 | } | |
327 | fn ipred_4x4_diag_down_left(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8], tr: &[u8]) { | |
328 | let mut t: [u16; 9] = [0; 9]; | |
329 | load(&mut t[..4], top); | |
330 | load(&mut t[4..8], tr); | |
331 | t[8] = t[7]; | |
332 | ||
333 | for i in 0..4 { | |
334 | buf[i] = ((t[i] + 2 * t[i + 1] + t[i + 2] + 2) >> 2) as u8; | |
335 | } | |
336 | let dst = &mut buf[stride..]; | |
337 | for i in 0..4 { | |
338 | dst[i] = ((t[i + 1] + 2 * t[i + 2] + t[i + 3] + 2) >> 2) as u8; | |
339 | } | |
340 | let dst = &mut buf[stride * 2..]; | |
341 | for i in 0..4 { | |
342 | dst[i] = ((t[i + 2] + 2 * t[i + 3] + t[i + 4] + 2) >> 2) as u8; | |
343 | } | |
344 | let dst = &mut buf[stride * 3..]; | |
345 | for i in 0..4 { | |
346 | dst[i] = ((t[i + 3] + 2 * t[i + 4] + t[i + 5] + 2) >> 2) as u8; | |
347 | } | |
348 | } | |
349 | fn ipred_4x4_diag_down_right(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8], _tr: &[u8]) { | |
350 | let mut t: [u16; 5] = [0; 5]; | |
351 | t[0] = u16::from(left[0]); | |
352 | load(&mut t[1..], top); | |
353 | let mut l: [u16; 5] = [0; 5]; | |
354 | load(&mut l, left); | |
355 | let dst = buf; | |
356 | ||
357 | for j in 0..4 { | |
358 | for i in 0..j { | |
359 | dst[i + j * stride] = ((l[j - i - 1] + 2 * l[j - i] + l[j - i + 1] + 2) >> 2) as u8; | |
360 | } | |
361 | dst[j + j * stride] = ((l[1] + 2 * l[0] + t[1] + 2) >> 2) as u8; | |
362 | for i in (j+1)..4 { | |
363 | dst[i + j * stride] = ((t[i - j - 1] + 2 * t[i - j] + t[i - j + 1] + 2) >> 2) as u8; | |
364 | } | |
365 | } | |
366 | } | |
367 | fn ipred_4x4_ver_right(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8], _tr: &[u8]) { | |
368 | let mut t: [u16; 5] = [0; 5]; | |
369 | t[0] = u16::from(left[0]); | |
370 | load(&mut t[1..], top); | |
371 | let mut l: [u16; 5] = [0; 5]; | |
372 | load(&mut l, left); | |
373 | let dst = buf; | |
374 | ||
375 | for j in 0..4 { | |
376 | for i in 0..4 { | |
377 | let zvr = ((2 * i) as i8) - (j as i8); | |
378 | let pix; | |
379 | if zvr >= 0 { | |
380 | if (zvr & 1) == 0 { | |
381 | pix = (t[i - (j >> 1)] + t[i - (j >> 1) + 1] + 1) >> 1; | |
382 | } else { | |
383 | pix = (t[i - (j >> 1) - 1] + 2 * t[i - (j >> 1)] + t[i - (j >> 1) + 1] + 2) >> 2; | |
384 | } | |
385 | } else { | |
386 | if zvr == -1 { | |
387 | pix = (l[1] + 2 * l[0] + t[1] + 2) >> 2; | |
388 | } else { | |
389 | pix = (l[j] + 2 * l[j - 1] + l[j - 2] + 2) >> 2; | |
390 | } | |
391 | } | |
392 | dst[i + j * stride] = pix as u8; | |
393 | } | |
394 | } | |
395 | } | |
396 | fn ipred_4x4_ver_left(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8], tr: &[u8]) { | |
397 | let mut t: [u16; 8] = [0; 8]; | |
398 | load(&mut t[..4], top); | |
399 | load(&mut t[4..], tr); | |
400 | let dst = buf; | |
401 | ||
402 | dst[0 + 0 * stride] = ((t[0] + t[1] + 1) >> 1) as u8; | |
403 | let pix = ((t[1] + t[2] + 1) >> 1) as u8; | |
404 | dst[1 + 0 * stride] = pix; | |
405 | dst[0 + 2 * stride] = pix; | |
406 | let pix = ((t[2] + t[3] + 1) >> 1) as u8; | |
407 | dst[2 + 0 * stride] = pix; | |
408 | dst[1 + 2 * stride] = pix; | |
409 | let pix = ((t[3] + t[4] + 1) >> 1) as u8; | |
410 | dst[3 + 0 * stride] = pix; | |
411 | dst[2 + 2 * stride] = pix; | |
412 | dst[3 + 2 * stride] = ((t[4] + t[5] + 1) >> 1) as u8; | |
413 | dst[0 + 1 * stride] = ((t[0] + 2*t[1] + t[2] + 2) >> 2) as u8; | |
414 | let pix = ((t[1] + 2*t[2] + t[3] + 2) >> 2) as u8; | |
415 | dst[1 + 1 * stride] = pix; | |
416 | dst[0 + 3 * stride] = pix; | |
417 | let pix = ((t[2] + 2*t[3] + t[4] + 2) >> 2) as u8; | |
418 | dst[2 + 1 * stride] = pix; | |
419 | dst[1 + 3 * stride] = pix; | |
420 | let pix = ((t[3] + 2*t[4] + t[5] + 2) >> 2) as u8; | |
421 | dst[3 + 1 * stride] = pix; | |
422 | dst[2 + 3 * stride] = pix; | |
423 | dst[3 + 3 * stride] = ((t[4] + 2*t[5] + t[6] + 2) >> 2) as u8; | |
424 | } | |
425 | fn ipred_4x4_hor_down(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8], _tr: &[u8]) { | |
426 | let mut t: [u16; 5] = [0; 5]; | |
427 | t[0] = u16::from(left[0]); | |
428 | load(&mut t[1..], top); | |
429 | let mut l: [u16; 5] = [0; 5]; | |
430 | load(&mut l, left); | |
431 | let dst = buf; | |
432 | ||
433 | for j in 0..4 { | |
434 | for i in 0..4 { | |
435 | let zhd = ((2 * j) as i8) - (i as i8); | |
436 | let pix; | |
437 | if zhd >= 0 { | |
438 | if (zhd & 1) == 0 { | |
439 | pix = (l[j - (i >> 1)] + l[j - (i >> 1) + 1] + 1) >> 1; | |
440 | } else { | |
441 | pix = (l[j - (i >> 1) - 1] + 2 * l[j - (i >> 1)] + l[j - (i >> 1) + 1] + 2) >> 2; | |
442 | } | |
443 | } else { | |
444 | if zhd == -1 { | |
445 | pix = (l[1] + 2 * l[0] + t[1] + 2) >> 2; | |
446 | } else { | |
447 | pix = (t[i - 2] + 2 * t[i - 1] + t[i] + 2) >> 2; | |
448 | } | |
449 | } | |
450 | dst[i + j * stride] = pix as u8; | |
451 | } | |
452 | } | |
453 | } | |
454 | fn ipred_4x4_hor_up(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8], _tr: &[u8]) { | |
455 | let mut l: [u16; 8] = [0; 8]; | |
456 | load(&mut l, &left[1..]); | |
457 | let dst = buf; | |
458 | ||
459 | dst[0 + 0 * stride] = ((l[0] + l[1] + 1) >> 1) as u8; | |
460 | dst[1 + 0 * stride] = ((l[0] + 2*l[1] + l[2] + 2) >> 2) as u8; | |
461 | let pix = ((l[1] + l[2] + 1) >> 1) as u8; | |
462 | dst[2 + 0 * stride] = pix; | |
463 | dst[0 + 1 * stride] = pix; | |
464 | let pix = ((l[1] + 2*l[2] + l[3] + 2) >> 2) as u8; | |
465 | dst[3 + 0 * stride] = pix; | |
466 | dst[1 + 1 * stride] = pix; | |
467 | let pix = ((l[2] + l[3] + 1) >> 1) as u8; | |
468 | dst[2 + 1 * stride] = pix; | |
469 | dst[0 + 2 * stride] = pix; | |
470 | let pix = ((l[2] + 3*l[3] + 2) >> 2) as u8; | |
471 | dst[3 + 1 * stride] = pix; | |
472 | dst[1 + 2 * stride] = pix; | |
473 | dst[3 + 2 * stride] = l[3] as u8; | |
474 | dst[1 + 3 * stride] = l[3] as u8; | |
475 | dst[0 + 3 * stride] = l[3] as u8; | |
476 | dst[2 + 2 * stride] = l[3] as u8; | |
477 | dst[2 + 3 * stride] = l[3] as u8; | |
478 | dst[3 + 3 * stride] = l[3] as u8; | |
479 | } | |
480 | fn ipred_4x4_dc(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8], _tr: &[u8]) { | |
481 | ipred_dc(buf, stride, top, left, 4, 3); | |
482 | } | |
483 | fn ipred_4x4_left_dc(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8], _tr: &[u8]) { | |
484 | ipred_left_dc(buf, stride, left, 4, 2); | |
485 | } | |
486 | fn ipred_4x4_top_dc(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8], _tr: &[u8]) { | |
487 | ipred_top_dc(buf, stride, top, 4, 2); | |
488 | } | |
489 | fn ipred_4x4_dc128(buf: &mut [u8], stride: usize, _top: &[u8], _left: &[u8], _tr: &[u8]) { | |
490 | ipred_dc128(buf, stride, 4); | |
491 | } | |
492 | ||
493 | pub struct IPred8Context { | |
494 | pub t: [u8; 16], | |
495 | pub l: [u8; 8], | |
496 | pub tl: u8, | |
497 | } | |
498 | ||
499 | impl IPred8Context { | |
500 | pub fn new() -> Self { | |
501 | Self { | |
502 | t: [128; 16], | |
503 | l: [128; 8], | |
504 | tl: 128, | |
505 | } | |
506 | } | |
507 | pub fn fill(&mut self, top: &[u8], left: &[u8], has_t: bool, has_tr: bool, has_l: bool, has_tl: bool) { | |
508 | let mut t = [0x80u8; 19]; | |
509 | let mut l = [0x80u8; 11]; | |
510 | if has_t { | |
511 | t[1..8 + 1].copy_from_slice(&top[..8]); | |
512 | } | |
513 | if has_tr { | |
514 | t[8 + 1..16 + 1].copy_from_slice(&top[8..][..8]); | |
515 | t[16 + 1] = t[15 + 1]; | |
516 | t[17 + 1] = t[15 + 1]; | |
517 | } else { | |
518 | let (t0, t1) = t.split_at_mut(8 + 1); | |
519 | for el in t1.iter_mut() { | |
520 | *el = t0[7 + 1]; | |
521 | } | |
522 | } | |
523 | if has_l { | |
524 | l[1..9].copy_from_slice(&left[1..9]); | |
525 | l[8 + 1] = l[7 + 1]; | |
526 | l[9 + 1] = l[7 + 1]; | |
527 | } | |
528 | if has_tl { | |
529 | t[0] = left[0]; | |
530 | l[0] = left[0]; | |
531 | } else { | |
532 | t[0] = t[1]; | |
533 | l[0] = l[1]; | |
534 | } | |
535 | ||
536 | for i in 0..16 { | |
537 | self.t[i] = ((u16::from(t[i]) + 2 * u16::from(t[i + 1]) + u16::from(t[i + 2]) + 2) >> 2) as u8; | |
538 | } | |
539 | for i in 0..8 { | |
540 | self.l[i] = ((u16::from(l[i]) + 2 * u16::from(l[i + 1]) + u16::from(l[i + 2]) + 2) >> 2) as u8; | |
541 | } | |
542 | self.tl = if has_t && has_l { | |
543 | ((u16::from(t[1]) + 2 * u16::from(t[0]) + u16::from(l[1]) + 2) >> 2) as u8 | |
544 | } else if has_t { | |
545 | ((3 * u16::from(t[0]) + u16::from(t[1]) + 2) >> 2) as u8 | |
546 | } else if has_l { | |
547 | ((3 * u16::from(l[0]) + u16::from(l[1]) + 2) >> 2) as u8 | |
548 | } else { | |
549 | t[0] | |
550 | }; | |
551 | } | |
552 | } | |
553 | ||
554 | fn ipred_y_8x8_ver(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
555 | for row in buf.chunks_mut(stride).take(8) { | |
556 | row[..8].copy_from_slice(&ctx.t[..8]); | |
557 | } | |
558 | } | |
559 | fn ipred_y_8x8_hor(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
560 | for (row, &l) in buf.chunks_mut(stride).zip(ctx.l.iter()).take(8) { | |
561 | row[..8].copy_from_slice(&[l; 8]); | |
562 | } | |
563 | } | |
564 | fn ipred_y_8x8_diag_down_left(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
565 | let mut t = [0u16; 16]; | |
566 | load(&mut t, &ctx.t); | |
567 | ||
568 | for (y, row) in buf.chunks_mut(stride).take(8).enumerate() { | |
569 | for (x, pix) in row.iter_mut().take(8).enumerate() { | |
570 | *pix = ((if (x != 7) || (y != 7) { | |
571 | t[x + y] + 2 * t[x + y + 1] + t[x + y + 2] | |
572 | } else { | |
573 | t[14] + 3 * t[15] | |
574 | } + 2) >> 2) as u8; | |
575 | } | |
576 | } | |
577 | } | |
578 | fn ipred_y_8x8_diag_down_right(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
579 | let mut t = [0u16; 9]; | |
580 | t[0] = u16::from(ctx.tl); | |
581 | load(&mut t[1..], &ctx.t); | |
582 | let mut l = [0u16; 9]; | |
583 | l[0] = u16::from(ctx.tl); | |
584 | load(&mut l[1..], &ctx.l); | |
585 | let diag = t[1] + 2 * t[0] + l[1]; | |
586 | ||
587 | for (y, row) in buf.chunks_mut(stride).take(8).enumerate() { | |
588 | for (x, pix) in row.iter_mut().take(8).enumerate() { | |
589 | *pix = ((if x > y { | |
590 | t[x - y - 1] + 2 * t[x - y] + t[x - y + 1] | |
591 | } else if x < y { | |
592 | l[y - x - 1] + 2 * l[y - x] + l[y - x + 1] | |
593 | } else { | |
594 | diag | |
595 | } + 2) >> 2) as u8; | |
596 | } | |
597 | } | |
598 | } | |
599 | fn ipred_y_8x8_ver_right(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
600 | let mut t = [0u16; 9]; | |
601 | t[0] = u16::from(ctx.tl); | |
602 | load(&mut t[1..], &ctx.t); | |
603 | let mut l = [0u16; 9]; | |
604 | l[0] = u16::from(ctx.tl); | |
605 | load(&mut l[1..], &ctx.l); | |
606 | ||
607 | for (y, row) in buf.chunks_mut(stride).take(8).enumerate() { | |
608 | for (x, pix) in row.iter_mut().take(8).enumerate() { | |
609 | let zvr = 2 * (x as i8) - (y as i8); | |
610 | *pix = if zvr >= 0 { | |
611 | let ix = x - (y >> 1); | |
612 | if (zvr & 1) == 0 { | |
613 | (t[ix] + t[ix + 1] + 1) >> 1 | |
614 | } else { | |
615 | (t[ix - 1] + 2 * t[ix] + t[ix + 1] + 2) >> 2 | |
616 | } | |
617 | } else if zvr == -1 { | |
618 | (l[1] + 2 * l[0] + t[1] + 2) >> 2 | |
619 | } else { | |
620 | let ix = y - 2 * x; | |
621 | (l[ix] + 2 * l[ix - 1] + l[ix - 2] + 2) >> 2 | |
622 | } as u8; | |
623 | } | |
624 | } | |
625 | } | |
626 | fn ipred_y_8x8_ver_left(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
627 | let mut t = [0u16; 16]; | |
628 | load(&mut t, &ctx.t); | |
629 | ||
630 | for (y, row) in buf.chunks_mut(stride).take(8).enumerate() { | |
631 | for (x, pix) in row.iter_mut().take(8).enumerate() { | |
632 | let ix = x + (y >> 1); | |
633 | *pix = if (y & 1) == 0 { | |
634 | (t[ix] + t[ix + 1] + 1) >> 1 | |
635 | } else { | |
636 | (t[ix] + 2 * t[ix + 1] + t[ix + 2] + 2) >> 2 | |
637 | } as u8; | |
638 | } | |
639 | } | |
640 | ||
641 | } | |
642 | fn ipred_y_8x8_hor_down(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
643 | let mut t = [0u16; 9]; | |
644 | t[0] = u16::from(ctx.tl); | |
645 | load(&mut t[1..], &ctx.t); | |
646 | let mut l = [0u16; 9]; | |
647 | l[0] = u16::from(ctx.tl); | |
648 | load(&mut l[1..], &ctx.l); | |
649 | ||
650 | for (y, row) in buf.chunks_mut(stride).take(8).enumerate() { | |
651 | for (x, pix) in row.iter_mut().take(8).enumerate() { | |
652 | let zhd = 2 * (y as i8) - (x as i8); | |
653 | *pix = if zhd >= 0 { | |
654 | let ix = y - (x >> 1); | |
655 | if (zhd & 1) == 0 { | |
656 | (l[ix] + l[ix + 1] + 1) >> 1 | |
657 | } else { | |
658 | (l[ix - 1] + 2 * l[ix] + l[ix + 1] + 2) >> 2 | |
659 | } | |
660 | } else if zhd == -1 { | |
661 | (l[1] + 2 * l[0] + t[1] + 2) >> 2 | |
662 | } else { | |
663 | let ix = x - 2 * y; | |
664 | (t[ix] + 2 * t[ix - 1] + t[ix - 2] + 2) >> 2 | |
665 | } as u8; | |
666 | } | |
667 | } | |
668 | } | |
669 | fn ipred_y_8x8_hor_up(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
670 | let mut l = [0u16; 8]; | |
671 | load(&mut l, &ctx.l); | |
672 | ||
673 | for (y, row) in buf.chunks_mut(stride).take(8).enumerate() { | |
674 | for (x, pix) in row.iter_mut().take(8).enumerate() { | |
675 | let zhu = x + 2 * y; | |
676 | let ix = y + (x >> 1); | |
677 | *pix = if zhu > 13 { | |
678 | l[7] | |
679 | } else if zhu == 13 { | |
680 | (l[6] + 3 * l[7] + 2) >> 2 | |
681 | } else if (zhu & 1) != 0 { | |
682 | (l[ix] + 2 * l[ix + 1] + l[ix + 2] + 2) >> 2 | |
683 | } else { | |
684 | (l[ix] + l[ix + 1] + 1) >> 1 | |
685 | } as u8; | |
686 | } | |
687 | } | |
688 | } | |
689 | fn ipred_y_8x8_dc(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
690 | let mut sum = 0u16; | |
691 | for &t in ctx.t[..8].iter() { | |
692 | sum += u16::from(t); | |
693 | } | |
694 | for &l in ctx.l[..8].iter() { | |
695 | sum += u16::from(l); | |
696 | } | |
697 | let dc = ((sum + 8) >> 4) as u8; | |
698 | for row in buf.chunks_mut(stride).take(8) { | |
699 | for pix in row.iter_mut().take(8) { | |
700 | *pix = dc; | |
701 | } | |
702 | } | |
703 | } | |
704 | fn ipred_y_8x8_left_dc(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
705 | let mut sum = 0u16; | |
706 | for &l in ctx.l[..8].iter() { | |
707 | sum += u16::from(l); | |
708 | } | |
709 | let dc = ((sum + 4) >> 3) as u8; | |
710 | for row in buf.chunks_mut(stride).take(8) { | |
711 | for pix in row.iter_mut().take(8) { | |
712 | *pix = dc; | |
713 | } | |
714 | } | |
715 | } | |
716 | fn ipred_y_8x8_top_dc(buf: &mut [u8], stride: usize, ctx: &IPred8Context) { | |
717 | let mut sum = 0u16; | |
718 | for &t in ctx.t[..8].iter() { | |
719 | sum += u16::from(t); | |
720 | } | |
721 | let dc = ((sum + 4) >> 3) as u8; | |
722 | for row in buf.chunks_mut(stride).take(8) { | |
723 | for pix in row.iter_mut().take(8) { | |
724 | *pix = dc; | |
725 | } | |
726 | } | |
727 | } | |
728 | fn ipred_y_8x8_dc128(buf: &mut [u8], stride: usize, _ctx: &IPred8Context) { | |
729 | ipred_dc128(buf, stride, 8); | |
730 | } | |
731 | ||
732 | fn ipred_8x8_ver(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8]) { | |
733 | ipred_ver(buf, stride, top, 8); | |
734 | } | |
735 | fn ipred_8x8_hor(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8]) { | |
736 | ipred_hor(buf, stride, left, 8); | |
737 | } | |
738 | fn ipred_8x8_dc(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8]) { | |
739 | let mut l = [0; 8]; | |
740 | load(&mut l, &left[1..]); | |
741 | let mut t = [0; 8]; | |
742 | load(&mut t, top); | |
743 | ||
744 | let dc0 = ((t[0] + t[1] + t[2] + t[3] + l[0] + l[1] + l[2] + l[3] + 4) >> 3) as u8; | |
745 | let sum1 = t[4] + t[5] + t[6] + t[7]; | |
746 | let dc1 = ((sum1 + 2) >> 2) as u8; | |
747 | let sum2 = l[4] + l[5] + l[6] + l[7]; | |
748 | let dc2 = ((sum2 + 2) >> 2) as u8; | |
749 | let dc3 = ((sum1 + sum2 + 4) >> 3) as u8; | |
750 | ||
751 | for row in buf.chunks_mut(stride).take(4) { | |
752 | row[..4].copy_from_slice(&[dc0; 4]); | |
753 | row[4..8].copy_from_slice(&[dc1; 4]); | |
754 | } | |
755 | for row in buf.chunks_mut(stride).skip(4).take(4) { | |
756 | row[..4].copy_from_slice(&[dc2; 4]); | |
757 | row[4..8].copy_from_slice(&[dc3; 4]); | |
758 | } | |
759 | } | |
760 | fn ipred_8x8_left_dc(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8]) { | |
761 | let mut left_dc0 = 0; | |
762 | let mut left_dc1 = 0; | |
763 | for &el in left[1..].iter().take(4) { | |
764 | left_dc0 += u16::from(el); | |
765 | } | |
766 | for &el in left[1..].iter().skip(4).take(4) { | |
767 | left_dc1 += u16::from(el); | |
768 | } | |
769 | let dc0 = ((left_dc0 + 2) >> 2) as u8; | |
770 | let dc2 = ((left_dc1 + 2) >> 2) as u8; | |
771 | for row in buf.chunks_mut(stride).take(4) { | |
772 | row[..8].copy_from_slice(&[dc0; 8]); | |
773 | } | |
774 | for row in buf.chunks_mut(stride).skip(4).take(4) { | |
775 | row[..8].copy_from_slice(&[dc2; 8]); | |
776 | } | |
777 | } | |
778 | fn ipred_8x8_top_dc(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8]) { | |
779 | ipred_top_dc(buf, stride, top, 4, 2); | |
780 | ipred_top_dc(&mut buf[4..], stride, &top[4..], 4, 2); | |
781 | let mut top = [0; 8]; | |
782 | top.copy_from_slice(&buf[stride * 3..][..8]); | |
783 | ipred_top_dc(&mut buf[4 * stride..], stride, &top, 4, 2); | |
784 | ipred_top_dc(&mut buf[4 + 4 * stride..], stride, &top[4..], 4, 2); | |
785 | } | |
786 | fn ipred_8x8_dc128(buf: &mut [u8], stride: usize, _top: &[u8], _left: &[u8]) { | |
787 | ipred_dc128(buf, stride, 8); | |
788 | } | |
789 | fn ipred_8x8_plane(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8]) { | |
790 | let mut h: i32 = 4 * (i32::from(top[7]) - i32::from(left[0])); | |
791 | let mut v: i32 = 4 * (i32::from(left[8]) - i32::from(left[0])); | |
792 | for i in 0..3 { | |
793 | let i1 = (i + 1) as i32; | |
794 | h += i1 * (i32::from(top[4 + i]) - i32::from(top[2 - i])); | |
795 | v += i1 * (i32::from(left[5 + i]) - i32::from(left[3 - i])); | |
796 | } | |
797 | let b = (17 * h + 16) >> 5; | |
798 | let c = (17 * v + 16) >> 5; | |
799 | let mut a = 16 * (i32::from(left[8]) + i32::from(top[7])) - 3 * (b + c) + 16; | |
800 | for line in buf.chunks_mut(stride).take(8) { | |
801 | let mut acc = a; | |
802 | for el in line.iter_mut().take(8) { | |
803 | *el = clip8((acc >> 5) as i16); | |
804 | acc += b; | |
805 | } | |
806 | a += c; | |
807 | } | |
808 | } | |
809 | ||
810 | fn ipred_16x16_ver(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8]) { | |
811 | ipred_ver(buf, stride, top, 16); | |
812 | } | |
813 | fn ipred_16x16_hor(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8]) { | |
814 | ipred_hor(buf, stride, left, 16); | |
815 | } | |
816 | fn ipred_16x16_dc(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8]) { | |
817 | ipred_dc(buf, stride, top, left, 16, 5); | |
818 | } | |
819 | fn ipred_16x16_left_dc(buf: &mut [u8], stride: usize, _top: &[u8], left: &[u8]) { | |
820 | ipred_left_dc(buf, stride, left, 16, 4); | |
821 | } | |
822 | fn ipred_16x16_top_dc(buf: &mut [u8], stride: usize, top: &[u8], _left: &[u8]) { | |
823 | ipred_top_dc(buf, stride, top, 16, 4); | |
824 | } | |
825 | fn ipred_16x16_dc128(buf: &mut [u8], stride: usize, _top: &[u8], _left: &[u8]) { | |
826 | ipred_dc128(buf, stride, 16); | |
827 | } | |
828 | fn ipred_16x16_plane(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8]) { | |
829 | let mut h = 8 * (i32::from(top[15]) - i32::from(left[0])); | |
830 | let mut v = 8 * (i32::from(left[16]) - i32::from(left[0])); | |
831 | for k in 0..7 { | |
832 | h += ((k as i32) + 1) * (i32::from(top[8 + k]) - i32::from(top[6 - k])); | |
833 | v += ((k as i32) + 1) * (i32::from(left[9 + k]) - i32::from(left[7 - k])); | |
834 | } | |
835 | ||
836 | h = (5 * h + 32) >> 6; | |
837 | v = (5 * v + 32) >> 6; | |
838 | ||
839 | let mut a = 16 * (i32::from(left[16]) + i32::from(top[15]) + 1) - 7 * (v + h); | |
840 | ||
841 | for row in buf.chunks_mut(stride).take(16) { | |
842 | let mut b = a; | |
843 | a += v; | |
844 | ||
845 | for dst in row.chunks_exact_mut(4).take(4) { | |
846 | dst[0] = clip8(((b ) >> 5) as i16); | |
847 | dst[1] = clip8(((b + h) >> 5) as i16); | |
848 | dst[2] = clip8(((b + 2*h) >> 5) as i16); | |
849 | dst[3] = clip8(((b + 3*h) >> 5) as i16); | |
850 | b += h * 4; | |
851 | } | |
852 | } | |
853 | } | |
854 | ||
855 | pub type IPred4x4Func = fn(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8], tr: &[u8]); | |
856 | pub type IPred8x8Func = fn(buf: &mut [u8], stride: usize, top: &[u8], left: &[u8]); | |
857 | pub type IPred8x8LumaFunc = fn(buf: &mut [u8], stride: usize, ctx: &IPred8Context); | |
858 | ||
859 | pub const IPRED4_DC128: usize = 11; | |
860 | pub const IPRED4_DC_TOP: usize = 10; | |
861 | pub const IPRED4_DC_LEFT: usize = 9; | |
862 | pub const IPRED8_DC128: usize = 6; | |
863 | pub const IPRED8_DC_TOP: usize = 5; | |
864 | pub const IPRED8_DC_LEFT: usize = 4; | |
865 | ||
866 | pub const IPRED_FUNCS4X4: [IPred4x4Func; 12] = [ | |
867 | ipred_4x4_ver, ipred_4x4_hor, ipred_4x4_dc, | |
868 | ipred_4x4_diag_down_left, ipred_4x4_diag_down_right, | |
869 | ipred_4x4_ver_right, ipred_4x4_hor_down, ipred_4x4_ver_left, ipred_4x4_hor_up, | |
870 | ipred_4x4_left_dc, ipred_4x4_top_dc, ipred_4x4_dc128 | |
871 | ]; | |
872 | ||
873 | pub const IPRED_FUNCS8X8_LUMA: [IPred8x8LumaFunc; 12] = [ | |
874 | ipred_y_8x8_ver, ipred_y_8x8_hor, ipred_y_8x8_dc, | |
875 | ipred_y_8x8_diag_down_left, ipred_y_8x8_diag_down_right, | |
876 | ipred_y_8x8_ver_right, ipred_y_8x8_hor_down, | |
877 | ipred_y_8x8_ver_left, ipred_y_8x8_hor_up, | |
878 | ipred_y_8x8_left_dc, ipred_y_8x8_top_dc, ipred_y_8x8_dc128 | |
879 | ]; | |
880 | ||
881 | pub const IPRED_FUNCS8X8_CHROMA: [IPred8x8Func; 7] = [ | |
882 | ipred_8x8_dc, ipred_8x8_hor, ipred_8x8_ver, ipred_8x8_plane, | |
883 | ipred_8x8_left_dc, ipred_8x8_top_dc, ipred_8x8_dc128 | |
884 | ]; | |
885 | ||
886 | pub const IPRED_FUNCS16X16: [IPred8x8Func; 7] = [ | |
887 | ipred_16x16_ver, ipred_16x16_hor, ipred_16x16_dc, ipred_16x16_plane, | |
888 | ipred_16x16_left_dc, ipred_16x16_top_dc, ipred_16x16_dc128 | |
889 | ]; | |
890 | ||
891 | macro_rules! loop_filter { | |
892 | (lumaedge; $buf: expr, $off: expr, $step: expr, $alpha: expr, $beta: expr) => { | |
893 | let p2 = i16::from($buf[$off - $step * 3]); | |
894 | let p1 = i16::from($buf[$off - $step * 2]); | |
895 | let p0 = i16::from($buf[$off - $step]); | |
896 | let q0 = i16::from($buf[$off]); | |
897 | let q1 = i16::from($buf[$off + $step]); | |
898 | let q2 = i16::from($buf[$off + $step * 2]); | |
899 | let a_p = (p2 - p0).abs() < $beta; | |
900 | let a_q = (q2 - q0).abs() < $beta; | |
901 | if a_p && (p0 - q0).abs() < (($alpha >> 2) + 2) { | |
902 | let p3 = i16::from($buf[$off - $step * 4]); | |
903 | $buf[$off - $step * 3] = ((2 * p3 + 3 * p2 + p1 + p0 + q0 + 4) >> 3) as u8; | |
904 | $buf[$off - $step * 2] = ((p2 + p1 + p0 + q0 + 2) >> 2) as u8; | |
905 | $buf[$off - $step] = ((p2 + 2 * p1 + 2 * p0 + 2 * q0 + q1 + 4) >> 3) as u8; | |
906 | } else { | |
907 | $buf[$off - $step] = ((2 * p1 + p0 + q1 + 2) >> 2) as u8; | |
908 | } | |
909 | if a_q && (p0 - q0).abs() < (($alpha >> 2) + 2) { | |
910 | let q3 = i16::from($buf[$off + $step * 3]); | |
911 | $buf[$off] = ((p1 + 2 * p0 + 2 * q0 + 2 * q1 + q2 + 4) >> 3) as u8; | |
912 | $buf[$off + $step] = ((p0 + q0 + q1 + q2 + 2) >> 2) as u8; | |
913 | $buf[$off + $step * 2] = ((2 * q3 + 3 * q2 + q1 + q0 + p0 + 4) >> 3) as u8; | |
914 | } else { | |
915 | $buf[$off] = ((2 * q1 + q0 + p1 + 2) >> 2) as u8; | |
916 | } | |
917 | }; | |
918 | (chromaedge; $buf: expr, $off: expr, $step: expr) => { | |
919 | let p1 = i16::from($buf[$off - $step * 2]); | |
920 | let p0 = i16::from($buf[$off - $step]); | |
921 | let q0 = i16::from($buf[$off]); | |
922 | let q1 = i16::from($buf[$off + $step]); | |
923 | $buf[$off - $step] = ((2 * p1 + p0 + q1 + 2) >> 2) as u8; | |
924 | $buf[$off] = ((2 * q1 + q0 + p1 + 2) >> 2) as u8; | |
925 | }; | |
926 | (lumanormal; $buf: expr, $off: expr, $step: expr, $tc0: expr, $beta: expr) => { | |
927 | let p2 = i16::from($buf[$off - $step * 3]); | |
928 | let p1 = i16::from($buf[$off - $step * 2]); | |
929 | let p0 = i16::from($buf[$off - $step]); | |
930 | let q0 = i16::from($buf[$off]); | |
931 | let q1 = i16::from($buf[$off + $step]); | |
932 | let q2 = i16::from($buf[$off + $step * 2]); | |
933 | let a_p = (p2 - p0).abs() < $beta; | |
934 | let a_q = (q2 - q0).abs() < $beta; | |
935 | let tc = $tc0 + (a_p as i16) + (a_q as i16); | |
936 | let delta = (((q0 - p0) * 4 + (p1 - q1) + 4) >> 3).max(-tc).min(tc); | |
937 | if a_p && ($tc0 > 0) { | |
938 | $buf[$off - $step * 2] = clip8(p1 + ((p2 + ((p0 + q0 + 1) >> 1) - p1 * 2) >> 1).max(-$tc0).min($tc0)); | |
939 | } | |
940 | $buf[$off - $step] = clip8(p0 + delta); | |
941 | $buf[$off] = clip8(q0 - delta); | |
942 | if a_q && ($tc0 > 0) { | |
943 | $buf[$off + $step] = clip8(q1 + ((q2 + ((p0 + q0 + 1) >> 1) - q1 * 2) >> 1).max(-$tc0).min($tc0)); | |
944 | } | |
945 | }; | |
946 | (chromanormal; $buf: expr, $off: expr, $step: expr, $tc0: expr) => { | |
947 | let p1 = i16::from($buf[$off - $step * 2]); | |
948 | let p0 = i16::from($buf[$off - $step]); | |
949 | let q0 = i16::from($buf[$off]); | |
950 | let q1 = i16::from($buf[$off + $step]); | |
951 | let tc = $tc0 + 1; | |
952 | let delta = (((q0 - p0) * 4 + (p1 - q1) + 4) >> 3).max(-tc).min(tc); | |
953 | $buf[$off - $step] = clip8(p0 + delta); | |
954 | $buf[$off] = clip8(q0 - delta); | |
955 | } | |
956 | } | |
957 | ||
958 | fn check_filter(buf: &[u8], off: usize, step: usize, alpha: i16, beta: i16) -> bool { | |
959 | let p1 = i16::from(buf[off - step * 2]); | |
960 | let p0 = i16::from(buf[off - step]); | |
961 | let q0 = i16::from(buf[off]); | |
962 | let q1 = i16::from(buf[off + step]); | |
963 | (p0 - q0).abs() < alpha && (p1 - p0).abs() < beta && (q1 - q0).abs() < beta | |
964 | } | |
965 | ||
966 | pub fn loop_filter_lumaedge_v(dst: &mut [u8], mut off: usize, stride: usize, alpha: i16, beta: i16) { | |
967 | for _ in 0..4 { | |
968 | if check_filter(dst, off, 1, alpha, beta) { | |
969 | loop_filter!(lumaedge; dst, off, 1, alpha, beta); | |
970 | } | |
971 | off += stride; | |
972 | } | |
973 | } | |
974 | pub fn loop_filter_lumaedge_h(dst: &mut [u8], off: usize, stride: usize, alpha: i16, beta: i16) { | |
975 | for x in 0..4 { | |
976 | if check_filter(dst, off + x, stride, alpha, beta) { | |
977 | loop_filter!(lumaedge; dst, off + x, stride, alpha, beta); | |
978 | } | |
979 | } | |
980 | } | |
981 | pub fn loop_filter_lumanormal_v(dst: &mut [u8], mut off: usize, stride: usize, alpha: i16, beta: i16, tc0: i16) { | |
982 | for _ in 0..4 { | |
983 | if check_filter(dst, off, 1, alpha, beta) { | |
984 | loop_filter!(lumanormal; dst, off, 1, tc0, beta); | |
985 | } | |
986 | off += stride; | |
987 | } | |
988 | } | |
989 | pub fn loop_filter_lumanormal_h(dst: &mut [u8], off: usize, stride: usize, alpha: i16, beta: i16, tc0: i16) { | |
990 | for x in 0..4 { | |
991 | if check_filter(dst, off + x, stride, alpha, beta) { | |
992 | loop_filter!(lumanormal; dst, off + x, stride, tc0, beta); | |
993 | } | |
994 | } | |
995 | } | |
996 | pub fn loop_filter_chromaedge_v(dst: &mut [u8], mut off: usize, stride: usize, alpha: i16, beta: i16) { | |
997 | for _ in 0..2 { | |
998 | if check_filter(dst, off, 1, alpha, beta) { | |
999 | loop_filter!(chromaedge; dst, off, 1); | |
1000 | } | |
1001 | off += stride; | |
1002 | } | |
1003 | } | |
1004 | pub fn loop_filter_chromaedge_h(dst: &mut [u8], off: usize, stride: usize, alpha: i16, beta: i16) { | |
1005 | for x in 0..2 { | |
1006 | if check_filter(dst, off + x, stride, alpha, beta) { | |
1007 | loop_filter!(chromaedge; dst, off + x, stride); | |
1008 | } | |
1009 | } | |
1010 | } | |
1011 | pub fn loop_filter_chromanormal_v(dst: &mut [u8], mut off: usize, stride: usize, alpha: i16, beta: i16, tc0: i16) { | |
1012 | for _ in 0..2 { | |
1013 | if check_filter(dst, off, 1, alpha, beta) { | |
1014 | loop_filter!(chromanormal; dst, off, 1, tc0); | |
1015 | } | |
1016 | off += stride; | |
1017 | } | |
1018 | } | |
1019 | pub fn loop_filter_chromanormal_h(dst: &mut [u8], off: usize, stride: usize, alpha: i16, beta: i16, tc0: i16) { | |
1020 | for x in 0..2 { | |
1021 | if check_filter(dst, off + x, stride, alpha, beta) { | |
1022 | loop_filter!(chromanormal; dst, off + x, stride, tc0); | |
1023 | } | |
1024 | } | |
1025 | } |