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1 | use nihav_core::frame::NASimpleVideoFrame; | |
2 | use nihav_codec_support::codecs::{MV, ZERO_MV}; | |
3 | use nihav_codec_support::data::GenericCache; | |
4 | use super::SliceRefs; | |
5 | use super::pic_ref::FrameMBInfo; | |
6 | ||
7 | #[repr(u8)] | |
8 | #[derive(Clone,Copy,Debug,PartialEq)] | |
9 | pub enum BMode { | |
10 | L0, | |
11 | L1, | |
12 | Bi, | |
13 | } | |
14 | ||
15 | #[derive(Clone,Copy,Debug,PartialEq,Default)] | |
16 | pub enum MBType { | |
17 | #[default] | |
18 | Intra4x4, | |
19 | Intra8x8, | |
20 | Intra16x16(u8, u8, u8), | |
21 | PCM, | |
22 | ||
23 | P16x16, | |
24 | P16x8, | |
25 | P8x16, | |
26 | P8x8, | |
27 | P8x8Ref0, | |
28 | PSkip, | |
29 | ||
30 | Direct, | |
31 | B16x16(BMode), | |
32 | B16x8(BMode, BMode), | |
33 | B8x16(BMode, BMode), | |
34 | B8x8, | |
35 | BSkip, | |
36 | } | |
37 | ||
38 | impl MBType { | |
39 | pub fn is_intra(self) -> bool { | |
40 | matches!(self, MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM) | |
41 | } | |
42 | pub fn is_intra16x16(self) -> bool { | |
43 | matches!(self, MBType::Intra16x16(_, _, _)) | |
44 | } | |
45 | pub fn is_skip(self) -> bool { | |
46 | matches!(self, MBType::PSkip | MBType::BSkip) | |
47 | } | |
48 | pub fn is_4x4(self) -> bool { self.num_parts() == 4 } | |
49 | pub fn is_l0(self, part: usize) -> bool { | |
50 | match self { | |
51 | MBType::B16x16(mode) => mode == BMode::L0, | |
52 | MBType::B16x8(mode0, mode1) | MBType::B8x16(mode0, mode1) => { | |
53 | if part == 0 { | |
54 | mode0 == BMode::L0 | |
55 | } else { | |
56 | mode1 == BMode::L0 | |
57 | } | |
58 | }, | |
59 | MBType::Direct | MBType::BSkip => false, | |
60 | _ => true, | |
61 | } | |
62 | } | |
63 | pub fn is_l1(self, part: usize) -> bool { | |
64 | match self { | |
65 | MBType::B16x16(mode) => mode == BMode::L1, | |
66 | MBType::B16x8(mode0, mode1) | MBType::B8x16(mode0, mode1) => { | |
67 | if part == 0 { | |
68 | mode0 == BMode::L1 | |
69 | } else { | |
70 | mode1 == BMode::L1 | |
71 | } | |
72 | }, | |
73 | _ => false, | |
74 | } | |
75 | } | |
76 | pub fn num_parts(self) -> usize { | |
77 | match self { | |
78 | MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM | | |
79 | MBType::PSkip | | |
80 | MBType::Direct | MBType::BSkip | |
81 | => 1, | |
82 | MBType::P16x16 | | |
83 | MBType::B16x16(_) | |
84 | => 1, | |
85 | MBType::P16x8 | MBType::P8x16 | | |
86 | MBType::B16x8(_, _) | MBType::B8x16(_, _) | |
87 | => 2, | |
88 | _ => 4, | |
89 | } | |
90 | } | |
91 | pub fn size(self) -> (usize, usize) { | |
92 | match self { | |
93 | MBType::Intra4x4 | | |
94 | MBType::Intra8x8 | | |
95 | MBType::Intra16x16(_, _, _) | | |
96 | MBType::PCM | | |
97 | MBType::P16x16 | | |
98 | MBType::PSkip | | |
99 | MBType::Direct | | |
100 | MBType::B16x16(_) | | |
101 | MBType::BSkip | |
102 | => (16, 16), | |
103 | MBType::P16x8 | MBType::B16x8(_, _) => (16, 8), | |
104 | MBType::P8x16 | MBType::B8x16(_, _) => (8, 16), | |
105 | _ => (8, 8), | |
106 | } | |
107 | } | |
108 | } | |
109 | ||
110 | #[derive(Clone,Copy,Debug,PartialEq,Default)] | |
111 | pub enum SubMBType { | |
112 | P8x8, | |
113 | P8x4, | |
114 | P4x8, | |
115 | P4x4, | |
116 | #[default] | |
117 | Direct8x8, | |
118 | B8x8(BMode), | |
119 | B8x4(BMode), | |
120 | B4x8(BMode), | |
121 | B4x4(BMode), | |
122 | } | |
123 | ||
124 | impl SubMBType { | |
125 | pub fn num_parts(self) -> usize { | |
126 | match self { | |
127 | SubMBType::P8x8 | SubMBType::Direct8x8 | SubMBType::B8x8(_) => 1, | |
128 | SubMBType::P4x4 | SubMBType::B4x4(_) => 4, | |
129 | _ => 2, | |
130 | } | |
131 | } | |
132 | pub fn size(self) -> (usize, usize) { | |
133 | match self { | |
134 | SubMBType::P8x8 | SubMBType::Direct8x8 | SubMBType::B8x8(_) => (8, 8), | |
135 | SubMBType::P8x4 | SubMBType::B8x4(_) => (8, 4), | |
136 | SubMBType::P4x8 | SubMBType::B4x8(_) => (4, 8), | |
137 | SubMBType::P4x4 | SubMBType::B4x4(_) => (4, 4), | |
138 | } | |
139 | } | |
140 | pub fn is_l0(self) -> bool { | |
141 | match self { | |
142 | SubMBType::B8x8(mode) | SubMBType::B8x4(mode) | | |
143 | SubMBType::B4x8(mode) | SubMBType::B4x4(mode) => { | |
144 | mode == BMode::L0 | |
145 | }, | |
146 | _ => true, | |
147 | } | |
148 | } | |
149 | pub fn is_l1(self) -> bool { | |
150 | match self { | |
151 | SubMBType::B8x8(mode) | SubMBType::B8x4(mode) | | |
152 | SubMBType::B4x8(mode) | SubMBType::B4x4(mode) => { | |
153 | mode == BMode::L1 | |
154 | }, | |
155 | _ => false, | |
156 | } | |
157 | } | |
158 | } | |
159 | ||
160 | #[repr(u8)] | |
161 | #[derive(Clone,Copy,Debug,PartialEq,Default)] | |
162 | pub enum CompactMBType { | |
163 | Intra4x4, | |
164 | Intra8x8, | |
165 | Intra16x16, | |
166 | PCM, | |
167 | ||
168 | P16x16, | |
169 | P16x8, | |
170 | P8x16, | |
171 | P8x8, | |
172 | P8x8Ref0, | |
173 | PSkip, | |
174 | ||
175 | Direct, | |
176 | B16x16, | |
177 | B16x8, | |
178 | B8x16, | |
179 | B8x8, | |
180 | BSkip, | |
181 | ||
182 | #[default] | |
183 | None, | |
184 | } | |
185 | ||
186 | impl CompactMBType { | |
187 | pub fn is_intra(self) -> bool { | |
188 | matches!(self, CompactMBType::Intra4x4 | CompactMBType::Intra8x8 | CompactMBType::Intra16x16) | |
189 | } | |
190 | pub fn is_intra16orpcm(self) -> bool { | |
191 | matches!(self, CompactMBType::Intra16x16 | CompactMBType::PCM) | |
192 | } | |
193 | pub fn is_skip(self) -> bool { | |
194 | matches!(self, CompactMBType::PSkip | CompactMBType::BSkip) | |
195 | } | |
196 | pub fn is_direct(self) -> bool { | |
197 | matches!(self, CompactMBType::BSkip | CompactMBType::Direct | CompactMBType::None) | |
198 | } | |
199 | pub fn is_inter(self) -> bool { | |
200 | !self.is_intra() && !self.is_skip() && self != CompactMBType::PCM | |
201 | } | |
202 | pub fn is_16x16_ref(self) -> bool { | |
203 | matches!(self, | |
204 | CompactMBType::Intra4x4 | | |
205 | CompactMBType::Intra8x8 | | |
206 | CompactMBType::Intra16x16 | | |
207 | CompactMBType::PCM | | |
208 | CompactMBType::P16x16 | | |
209 | CompactMBType::B16x16) | |
210 | } | |
211 | } | |
212 | ||
213 | impl From<MBType> for CompactMBType { | |
214 | fn from(mbtype: MBType) -> Self { | |
215 | match mbtype { | |
216 | MBType::Intra4x4 => CompactMBType::Intra4x4, | |
217 | MBType::Intra8x8 => CompactMBType::Intra8x8, | |
218 | MBType::Intra16x16(_, _, _) => CompactMBType::Intra16x16, | |
219 | MBType::PCM => CompactMBType::PCM, | |
220 | MBType::P16x16 => CompactMBType::P16x16, | |
221 | MBType::P16x8 => CompactMBType::P16x8, | |
222 | MBType::P8x16 => CompactMBType::P8x16, | |
223 | MBType::P8x8 => CompactMBType::P8x8, | |
224 | MBType::P8x8Ref0 => CompactMBType::P8x8Ref0, | |
225 | MBType::PSkip => CompactMBType::PSkip, | |
226 | MBType::Direct => CompactMBType::Direct, | |
227 | MBType::B16x16(_) => CompactMBType::B16x16, | |
228 | MBType::B16x8(_, _) => CompactMBType::B16x8, | |
229 | MBType::B8x16(_, _) => CompactMBType::B8x16, | |
230 | MBType::B8x8 => CompactMBType::B8x8, | |
231 | MBType::BSkip => CompactMBType::BSkip, | |
232 | } | |
233 | } | |
234 | } | |
235 | ||
236 | #[repr(u8)] | |
237 | #[derive(Clone,Copy,Debug,PartialEq,Default)] | |
238 | pub enum IntraPredMode { | |
239 | Vertical, | |
240 | Horizontal, | |
241 | DC, | |
242 | DiagDownLeft, | |
243 | DiagDownRight, | |
244 | VerRight, | |
245 | HorDown, | |
246 | VerLeft, | |
247 | HorUp, | |
248 | #[default] | |
249 | None, | |
250 | } | |
251 | ||
252 | impl IntraPredMode { | |
253 | pub fn is_none(self) -> bool { self == IntraPredMode::None } | |
254 | pub fn into_pred_idx(self) -> i8 { | |
255 | if !self.is_none() { | |
256 | self as u8 as i8 | |
257 | } else { | |
258 | -1 | |
259 | } | |
260 | } | |
261 | } | |
262 | ||
263 | impl From<u8> for IntraPredMode { | |
264 | fn from(val: u8) -> Self { | |
265 | match val { | |
266 | 0 => IntraPredMode::Vertical, | |
267 | 1 => IntraPredMode::Horizontal, | |
268 | 2 => IntraPredMode::DC, | |
269 | 3 => IntraPredMode::DiagDownLeft, | |
270 | 4 => IntraPredMode::DiagDownRight, | |
271 | 5 => IntraPredMode::VerRight, | |
272 | 6 => IntraPredMode::HorDown, | |
273 | 7 => IntraPredMode::VerLeft, | |
274 | 8 => IntraPredMode::HorUp, | |
275 | _ => IntraPredMode::None, | |
276 | } | |
277 | } | |
278 | } | |
279 | ||
280 | impl From<IntraPredMode> for u8 { | |
281 | fn from(val: IntraPredMode) -> Self { | |
282 | match val { | |
283 | IntraPredMode::Vertical => 0, | |
284 | IntraPredMode::Horizontal => 1, | |
285 | IntraPredMode::DC => 2, | |
286 | IntraPredMode::DiagDownLeft => 3, | |
287 | IntraPredMode::DiagDownRight => 4, | |
288 | IntraPredMode::VerRight => 5, | |
289 | IntraPredMode::HorDown => 6, | |
290 | IntraPredMode::VerLeft => 7, | |
291 | IntraPredMode::HorUp => 8, | |
292 | _ => 9, | |
293 | } | |
294 | } | |
295 | } | |
296 | ||
297 | pub const MISSING_POC: u16 = 0xFFFF; | |
298 | ||
299 | #[derive(Clone,Copy,Debug)] | |
300 | pub struct PicRef { | |
301 | ref_idx: u8 | |
302 | } | |
303 | ||
304 | pub const MISSING_REF: PicRef = PicRef { ref_idx: 0xFF }; | |
305 | pub const INVALID_REF: PicRef = PicRef { ref_idx: 0xFE }; | |
306 | pub const ZERO_REF: PicRef = PicRef { ref_idx: 0 }; | |
307 | const DIRECT_FLAG: u8 = 0x40; | |
308 | ||
309 | impl PicRef { | |
310 | pub fn new(ref_idx: u8) -> Self { | |
311 | Self { ref_idx } | |
312 | } | |
313 | pub fn not_avail(self) -> bool { | |
314 | self == MISSING_REF || self == INVALID_REF | |
315 | } | |
316 | pub fn index(self) -> usize { (self.ref_idx & !DIRECT_FLAG) as usize } | |
317 | pub fn is_direct(self) -> bool { (self.ref_idx & DIRECT_FLAG) != 0 } | |
318 | pub fn set_direct(&mut self) { self.ref_idx |= DIRECT_FLAG; } | |
319 | fn min_pos(self, other: Self) -> Self { | |
320 | match (self.not_avail(), other.not_avail()) { | |
321 | (true, true) => self, | |
322 | (false, true) => self, | |
323 | (true, false) => other, | |
324 | (false, false) => PicRef::new((self.ref_idx & !DIRECT_FLAG).min(other.ref_idx & !DIRECT_FLAG)), | |
325 | } | |
326 | } | |
327 | } | |
328 | ||
329 | impl Default for PicRef { | |
330 | fn default() -> Self { MISSING_REF } | |
331 | } | |
332 | ||
333 | impl PartialEq for PicRef { | |
334 | fn eq(&self, other: &Self) -> bool { | |
335 | (self.ref_idx | DIRECT_FLAG) == (other.ref_idx | DIRECT_FLAG) | |
336 | } | |
337 | } | |
338 | ||
339 | impl std::fmt::Display for PicRef { | |
340 | fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | |
341 | if *self == MISSING_REF { | |
342 | write!(f, "-1") | |
343 | } else if *self == INVALID_REF { | |
344 | write!(f, "-2") | |
345 | } else { | |
346 | write!(f, "{}", self.ref_idx & !DIRECT_FLAG) | |
347 | } | |
348 | } | |
349 | } | |
350 | ||
351 | #[derive(Clone,Copy,Default)] | |
352 | pub struct MBData { | |
353 | pub mb_type: CompactMBType, | |
354 | pub cbp: u8, | |
355 | pub coded_flags: u32, | |
356 | pub cmode: u8, | |
357 | pub qp_y: u8, | |
358 | pub qp_u: u8, | |
359 | pub qp_v: u8, | |
360 | pub transform_8x8: bool, | |
361 | } | |
362 | ||
363 | pub fn blk4_to_blk8(blk4: usize) -> usize { | |
364 | const MAP: [usize; 16] = [ 0, 0, 1, 1, 0, 0, 1, 1, 2, 2, 3, 3, 2, 2, 3, 3 ]; | |
365 | MAP[blk4 & 0xF] | |
366 | } | |
367 | ||
368 | #[derive(Clone,Copy)] | |
369 | pub struct Blk8Data { | |
370 | pub ref_idx: [PicRef; 2], | |
371 | pub ncoded_c: [u8; 2], | |
372 | } | |
373 | ||
374 | impl Default for Blk8Data { | |
375 | fn default() -> Self { | |
376 | Self { | |
377 | ref_idx: [MISSING_REF; 2], | |
378 | ncoded_c: [0; 2], | |
379 | } | |
380 | } | |
381 | } | |
382 | ||
383 | #[derive(Clone,Copy,Default)] | |
384 | pub struct Blk4Data { | |
385 | pub ncoded: u8, | |
386 | pub ipred: IntraPredMode, | |
387 | pub mv: [MV; 2], | |
388 | pub mvd: [MV; 2], | |
389 | } | |
390 | ||
391 | pub struct SliceState { | |
392 | pub mb_x: usize, | |
393 | pub mb_y: usize, | |
394 | pub mb_w: usize, | |
395 | pub mb_h: usize, | |
396 | pub mb_start: usize, | |
397 | ||
398 | pub mb: GenericCache<MBData>, | |
399 | pub blk8: GenericCache<Blk8Data>, | |
400 | pub blk4: GenericCache<Blk4Data>, | |
401 | ||
402 | pub deblock: [u8; 16], | |
403 | ||
404 | pub has_top: bool, | |
405 | pub has_left: bool, | |
406 | ||
407 | pub top_line_y: Vec<u8>, | |
408 | pub left_y: [u8; 17], // first element is top-left | |
409 | pub top_line_c: [Vec<u8>; 2], | |
410 | pub left_c: [[u8; 9]; 2], | |
411 | } | |
412 | ||
413 | const BLK4_TO_D8: [usize; 16] = [ 0, 0, 3, 3, 0, 0, 3, 3, 12, 12, 15, 15, 12, 12, 15, 15 ]; | |
414 | ||
415 | impl SliceState { | |
416 | pub fn new() -> Self { | |
417 | Self { | |
418 | mb_x: 0, | |
419 | mb_y: 0, | |
420 | mb_w: 0, | |
421 | mb_h: 0, | |
422 | mb_start: 0, | |
423 | mb: GenericCache::new(0, 0, MBData::default()), | |
424 | blk8: GenericCache::new(0, 0, Blk8Data::default()), | |
425 | blk4: GenericCache::new(0, 0, Blk4Data::default()), | |
426 | ||
427 | deblock: [0; 16], | |
428 | ||
429 | has_top: false, | |
430 | has_left: false, | |
431 | ||
432 | top_line_y: Vec::new(), | |
433 | left_y: [0; 17], | |
434 | top_line_c: [Vec::new(), Vec::new()], | |
435 | left_c: [[0; 9]; 2], | |
436 | } | |
437 | } | |
438 | pub fn reset(&mut self, mb_w: usize, mb_h: usize, mb_pos: usize) { | |
439 | self.mb_w = mb_w; | |
440 | self.mb_h = mb_h; | |
441 | self.mb_start = mb_pos; | |
442 | if mb_w > 0 { | |
443 | self.mb_x = mb_pos % mb_w; | |
444 | self.mb_y = mb_pos / mb_w; | |
445 | } else { | |
446 | self.mb_x = 0; | |
447 | self.mb_y = 0; | |
448 | } | |
449 | self.mb = GenericCache::new(1, mb_w + 2, MBData::default()); | |
450 | self.blk8 = GenericCache::new(2, mb_w * 2 + 2, Blk8Data::default()); | |
451 | self.blk4 = GenericCache::new(4, mb_w * 4 + 2, Blk4Data::default()); | |
452 | ||
453 | self.has_top = false; | |
454 | self.has_left = false; | |
455 | ||
456 | self.top_line_y.resize(mb_w * 16 + 1, 0x80); | |
457 | self.top_line_c[0].resize(mb_w * 8 + 1, 0x80); | |
458 | self.top_line_c[1].resize(mb_w * 8 + 1, 0x80); | |
459 | self.left_y = [0x80; 17]; | |
460 | self.left_c = [[0x80; 9]; 2]; | |
461 | } | |
462 | pub fn save_ipred_context(&mut self, frm: &NASimpleVideoFrame<u8>) { | |
463 | let dstoff = self.mb_x * 16; | |
464 | let srcoff = frm.offset[0] + self.mb_x * 16 + self.mb_y * 16 * frm.stride[0]; | |
465 | self.left_y[0] = self.top_line_y[dstoff + 15]; | |
466 | self.top_line_y[dstoff..][..16].copy_from_slice(&frm.data[srcoff + frm.stride[0] * 15..][..16]); | |
467 | for (dst, src) in self.left_y[1..].iter_mut().zip(frm.data[srcoff..].chunks(frm.stride[0])) { | |
468 | *dst = src[15]; | |
469 | } | |
470 | for chroma in 0..2 { | |
471 | let cstride = frm.stride[chroma + 1]; | |
472 | let dstoff = self.mb_x * 8; | |
473 | let srcoff = frm.offset[chroma + 1] + self.mb_x * 8 + self.mb_y * 8 * cstride; | |
474 | self.left_c[chroma][0] = self.top_line_c[chroma][dstoff + 7]; | |
475 | self.top_line_c[chroma][dstoff..][..8].copy_from_slice(&frm.data[srcoff + cstride * 7..][..8]); | |
476 | for (dst, src) in self.left_c[chroma][1..].iter_mut().zip(frm.data[srcoff..].chunks(cstride)) { | |
477 | *dst = src[7]; | |
478 | } | |
479 | } | |
480 | } | |
481 | pub fn fill_deblock(&mut self, frefs: &SliceRefs, deblock_mode: u8, is_s: bool) { | |
482 | if deblock_mode == 1 { | |
483 | return; | |
484 | } | |
485 | ||
486 | self.deblock = [0; 16]; | |
487 | ||
488 | let tx8x8 = self.get_cur_mb().transform_8x8; | |
489 | ||
490 | let cur_intra = self.get_cur_mb().mb_type.is_intra(); | |
491 | let left_intra = self.get_left_mb().mb_type.is_intra(); | |
492 | let mut top_intra = self.get_top_mb().mb_type.is_intra(); | |
493 | for y in 0..4 { | |
494 | let can_do_top = y != 0 || (self.mb_y != 0 && (self.has_top || deblock_mode != 2)); | |
495 | if can_do_top && (!tx8x8 || (y & 1) == 0) { | |
496 | if is_s || cur_intra || top_intra { | |
497 | let val = if y == 0 { 0x40 } else { 0x30 }; | |
498 | for el in self.deblock[y * 4..][..4].iter_mut() { *el |= val; } | |
499 | } else { | |
500 | for x in 0..4 { | |
501 | let blk4 = x + y * 4; | |
502 | let blk8 = x / 2 + (y / 2) * 2; | |
503 | if self.get_cur_blk4(blk4).ncoded != 0 || self.get_top_blk4(blk4).ncoded != 0 { | |
504 | self.deblock[y * 4 + x] |= 0x20; | |
505 | } else { | |
506 | let cur_mv = self.get_cur_blk4(blk4).mv; | |
507 | let top_mv = self.get_top_blk4(blk4).mv; | |
508 | let cur_ref = self.get_cur_blk8(blk8).ref_idx; | |
509 | let top_ref = if (y & 1) == 0 { self.get_top_blk8(blk8).ref_idx } else { cur_ref }; | |
510 | if mvdiff4(cur_mv[0], top_mv[0]) || mvdiff4(cur_mv[1], top_mv[1]) || !frefs.cmp_refs(cur_ref, top_ref) { | |
511 | self.deblock[y * 4 + x] |= 0x10; | |
512 | } | |
513 | } | |
514 | } | |
515 | } | |
516 | } | |
517 | let mut lleft_intra = left_intra; | |
518 | for x in 0..4 { | |
519 | let skip_8 = tx8x8 && (x & 1) != 0; | |
520 | let can_do_left = x > 0 || self.has_left || (self.mb_x != 0 && deblock_mode != 2); | |
521 | if !can_do_left { | |
522 | continue; | |
523 | } | |
524 | let blk4 = x + y * 4; | |
525 | let blk8 = x / 2 + (y / 2) * 2; | |
526 | if skip_8 { | |
527 | } else if is_s || cur_intra || lleft_intra { | |
528 | self.deblock[y * 4 + x] |= if x == 0 { 4 } else { 3 }; | |
529 | } else if self.get_cur_blk4(blk4).ncoded != 0 || self.get_left_blk4(blk4).ncoded != 0 { | |
530 | self.deblock[y * 4 + x] |= 2; | |
531 | } else { | |
532 | let cur_mv = self.get_cur_blk4(blk4).mv; | |
533 | let left_mv = self.get_left_blk4(blk4).mv; | |
534 | let cur_ref = self.get_cur_blk8(blk8).ref_idx; | |
535 | let left_ref = if (x & 1) == 0 { self.get_left_blk8(blk8).ref_idx } else { cur_ref }; | |
536 | if mvdiff4(cur_mv[0], left_mv[0]) || mvdiff4(cur_mv[1], left_mv[1]) || !frefs.cmp_refs(cur_ref, left_ref) { | |
537 | self.deblock[y * 4 + x] |= 1; | |
538 | } | |
539 | } | |
540 | lleft_intra = cur_intra; | |
541 | } | |
542 | top_intra = cur_intra; | |
543 | } | |
544 | } | |
545 | pub fn next_mb(&mut self) { | |
546 | self.mb_x += 1; | |
547 | self.has_left = true; | |
548 | if self.mb_x == self.mb_w { | |
549 | self.mb_x = 0; | |
550 | self.mb_y += 1; | |
551 | self.mb.update_row(); | |
552 | self.blk8.update_row(); | |
553 | self.blk4.update_row(); | |
554 | ||
555 | self.has_left = false; | |
556 | } | |
557 | self.has_top = self.mb_x + self.mb_y * self.mb_w >= self.mb_start + self.mb_w; | |
558 | } | |
559 | pub fn get_cur_mb_idx(&self) -> usize { self.mb.xpos + self.mb_x } | |
560 | pub fn get_cur_blk8_idx(&self, blk_no: usize) -> usize { | |
561 | self.blk8.xpos + self.mb_x * 2 + (blk_no & 1) + (blk_no >> 1) * self.blk8.stride | |
562 | } | |
563 | pub fn get_cur_blk4_idx(&self, blk_no: usize) -> usize { | |
564 | self.blk4.xpos + self.mb_x * 4 + (blk_no & 3) + (blk_no >> 2) * self.blk4.stride | |
565 | } | |
566 | pub fn get_cur_mb(&mut self) -> &mut MBData { | |
567 | let idx = self.get_cur_mb_idx(); | |
568 | &mut self.mb.data[idx] | |
569 | } | |
570 | pub fn get_left_mb(&self) -> &MBData { | |
571 | &self.mb.data[self.get_cur_mb_idx() - 1] | |
572 | } | |
573 | pub fn get_top_mb(&self) -> &MBData { | |
574 | &self.mb.data[self.get_cur_mb_idx() - self.mb.stride] | |
575 | } | |
576 | pub fn get_cur_blk8(&mut self, blk_no: usize) -> &mut Blk8Data { | |
577 | let idx = self.get_cur_blk8_idx(blk_no); | |
578 | &mut self.blk8.data[idx] | |
579 | } | |
580 | pub fn get_left_blk8(&self, blk_no: usize) -> &Blk8Data { | |
581 | &self.blk8.data[self.get_cur_blk8_idx(blk_no) - 1] | |
582 | } | |
583 | pub fn get_top_blk8(&self, blk_no: usize) -> &Blk8Data { | |
584 | &self.blk8.data[self.get_cur_blk8_idx(blk_no) - self.blk8.stride] | |
585 | } | |
586 | pub fn get_cur_blk4(&mut self, blk_no: usize) -> &mut Blk4Data { | |
587 | let idx = self.get_cur_blk4_idx(blk_no); | |
588 | &mut self.blk4.data[idx] | |
589 | } | |
590 | pub fn get_left_blk4(&self, blk_no: usize) -> &Blk4Data { | |
591 | &self.blk4.data[self.get_cur_blk4_idx(blk_no) - 1] | |
592 | } | |
593 | pub fn get_top_blk4(&self, blk_no: usize) -> &Blk4Data { | |
594 | &self.blk4.data[self.get_cur_blk4_idx(blk_no) - self.blk4.stride] | |
595 | } | |
596 | ||
597 | pub fn apply_to_blk8<F: (Fn(&mut Blk8Data))>(&mut self, f: F) { | |
598 | let start = self.get_cur_blk8_idx(0); | |
599 | for row in self.blk8.data[start..].chunks_mut(self.blk8.stride).take(2) { | |
600 | for el in row[..2].iter_mut() { | |
601 | f(el); | |
602 | } | |
603 | } | |
604 | } | |
605 | pub fn apply_to_blk4<F: (Fn(&mut Blk4Data))>(&mut self, f: F) { | |
606 | let start = self.get_cur_blk4_idx(0); | |
607 | for row in self.blk4.data[start..].chunks_mut(self.blk4.stride).take(4) { | |
608 | for el in row[..4].iter_mut() { | |
609 | f(el); | |
610 | } | |
611 | } | |
612 | } | |
613 | ||
614 | pub fn fill_ipred(&mut self, imode: IntraPredMode) { | |
615 | self.apply_to_blk4(|blk| blk.ipred = imode); | |
616 | } | |
617 | pub fn fill_ncoded(&mut self, nc: u8) { | |
618 | self.apply_to_blk4(|blk| blk.ncoded = nc); | |
619 | self.apply_to_blk8(|blk| blk.ncoded_c = [nc; 2]); | |
620 | } | |
621 | pub fn reset_mb_mv(&mut self) { | |
622 | self.apply_to_blk8(|blk| blk.ref_idx = [INVALID_REF; 2]); | |
623 | } | |
624 | ||
625 | pub fn get_mv_ctx(&self, xoff: usize, yoff: usize, ref_l: usize) -> (usize, usize) { | |
626 | let blk_no = xoff / 4 + yoff; | |
627 | let mv_a = self.get_left_blk4(blk_no).mvd[ref_l]; | |
628 | let mv_b = self.get_top_blk4(blk_no).mvd[ref_l]; | |
629 | let mv = mv_a + mv_b; | |
630 | let ctx0 = if mv.x < 3 { 0 } else if mv.x <= 32 { 1 } else { 2 }; | |
631 | let ctx1 = if mv.y < 3 { 0 } else if mv.y <= 32 { 1 } else { 2 }; | |
632 | (ctx0, ctx1) | |
633 | } | |
634 | pub fn get_mv_ref_ctx(&self, xoff: usize, yoff: usize, ref_l: usize) -> usize { | |
635 | let blk_no = xoff / 8 + (yoff / 8) * 2; | |
636 | let mut ctx = 0; | |
637 | let left_ref = self.get_left_blk8(blk_no).ref_idx[ref_l]; | |
638 | let top_ref = self.get_top_blk8(blk_no).ref_idx[ref_l]; | |
639 | if !left_ref.not_avail() && !left_ref.is_direct() && left_ref.index() > 0 { | |
640 | ctx += 1; | |
641 | } | |
642 | if !top_ref.not_avail() && !top_ref.is_direct() && top_ref.index() > 0 { | |
643 | ctx += 2; | |
644 | } | |
645 | ctx | |
646 | } | |
647 | #[allow(clippy::if_same_then_else)] | |
648 | pub fn predict(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, diff_mv: MV, ref_idx: PicRef) { | |
649 | let midx = self.get_cur_blk4_idx(0) + xpos / 4 + ypos / 4 * self.blk4.stride; | |
650 | let ridx = self.get_cur_blk8_idx(0) + xpos / 8 + ypos / 8 * self.blk8.stride; | |
651 | let ridx_c = self.get_cur_blk8_idx(0) + (xpos + bw) / 8 + ypos / 8 * self.blk8.stride - if (ypos & 4) == 0 { self.blk8.stride } else { 0 }; | |
652 | ||
653 | let mv_a = self.blk4.data[midx - 1].mv[ref_l]; | |
654 | let mv_b = self.blk4.data[midx - self.blk4.stride].mv[ref_l]; | |
655 | let mut mv_c = self.blk4.data[midx - self.blk4.stride + bw / 4].mv[ref_l]; | |
656 | ||
657 | let rx = if (xpos & 4) != 0 { 0 } else { 1 }; | |
658 | let ry = if (ypos & 4) != 0 { 0 } else { self.blk8.stride }; | |
659 | let ref_a = self.blk8.data[ridx - rx].ref_idx[ref_l]; | |
660 | let ref_b = self.blk8.data[ridx - ry].ref_idx[ref_l]; | |
661 | let mut ref_c = self.blk8.data[ridx_c].ref_idx[ref_l]; | |
662 | ||
663 | if ref_c == MISSING_REF || (((xpos + bw) & 4) == 0 && (ypos & 4) != 0) { | |
664 | mv_c = self.blk4.data[midx - self.blk4.stride - 1].mv[ref_l]; | |
665 | ref_c = self.blk8.data[ridx - rx - ry].ref_idx[ref_l]; | |
666 | } | |
667 | ||
668 | let pred_mv = if bw == 16 && bh == 8 && ypos == 0 && ref_b == ref_idx { | |
669 | mv_b | |
670 | } else if bw == 16 && bh == 8 && ypos != 0 && ref_a == ref_idx { | |
671 | mv_a | |
672 | } else if bw == 8 && bh == 16 && xpos == 0 && ref_a == ref_idx { | |
673 | mv_a | |
674 | } else if bw == 8 && bh == 16 && xpos != 0 && ref_c == ref_idx { | |
675 | mv_c | |
676 | } else if ref_b == MISSING_REF && ref_c == MISSING_REF { | |
677 | mv_a | |
678 | } else { | |
679 | let count = ((ref_a == ref_idx) as u8) + ((ref_b == ref_idx) as u8) + ((ref_c == ref_idx) as u8); | |
680 | if count == 1 { | |
681 | if ref_a == ref_idx { | |
682 | mv_a | |
683 | } else if ref_b == ref_idx { | |
684 | mv_b | |
685 | } else { | |
686 | mv_c | |
687 | } | |
688 | } else { | |
689 | MV::pred(mv_a, mv_b, mv_c) | |
690 | } | |
691 | }; | |
692 | ||
693 | let mv = pred_mv + diff_mv; | |
694 | self.fill_mv (xpos, ypos, bw, bh, ref_l, mv); | |
695 | self.fill_ref(xpos, ypos, bw, bh, ref_l, ref_idx); | |
696 | } | |
697 | pub fn predict_pskip(&mut self) { | |
698 | let midx = self.get_cur_blk4_idx(0); | |
699 | let ridx = self.get_cur_blk8_idx(0); | |
700 | ||
701 | let mv_a = self.blk4.data[midx - 1].mv[0]; | |
702 | let mv_b = self.blk4.data[midx - self.blk4.stride].mv[0]; | |
703 | let mut mv_c = self.blk4.data[midx - self.blk4.stride + 4].mv[0]; | |
704 | ||
705 | let ref_a = self.blk8.data[ridx - 1].ref_idx[0]; | |
706 | let ref_b = self.blk8.data[ridx - self.blk8.stride].ref_idx[0]; | |
707 | let mut ref_c = self.blk8.data[ridx - self.blk8.stride + 2].ref_idx[0]; | |
708 | ||
709 | if ref_c == MISSING_REF { | |
710 | mv_c = self.blk4.data[midx - self.blk4.stride - 1].mv[0]; | |
711 | ref_c = self.blk8.data[ridx - self.blk8.stride - 1].ref_idx[0]; | |
712 | } | |
713 | ||
714 | let ref_idx = ZERO_REF; | |
715 | let mv = if ref_a == MISSING_REF || ref_b == MISSING_REF || (ref_a == ZERO_REF && mv_a == ZERO_MV) || (ref_b == ZERO_REF && mv_b == ZERO_MV) { | |
716 | ZERO_MV | |
717 | } else { | |
718 | let count = ((ref_a == ref_idx) as u8) + ((ref_b == ref_idx) as u8) + ((ref_c == ref_idx) as u8); | |
719 | if count == 1 { | |
720 | if ref_a == ref_idx { | |
721 | mv_a | |
722 | } else if ref_b == ref_idx { | |
723 | mv_b | |
724 | } else { | |
725 | mv_c | |
726 | } | |
727 | } else { | |
728 | MV::pred(mv_a, mv_b, mv_c) | |
729 | } | |
730 | }; | |
731 | ||
732 | self.fill_mv (0, 0, 16, 16, 0, mv); | |
733 | self.fill_ref(0, 0, 16, 16, 0, ref_idx); | |
734 | } | |
735 | pub fn predict_direct_mb(&mut self, frame_refs: &SliceRefs, temporal_mv: bool, direct_8x8: bool, cur_id: u16) { | |
736 | let (col_mb, r1_poc, r1_long) = frame_refs.get_colocated_info(self.mb_x, self.mb_y); | |
737 | if direct_8x8 { | |
738 | for blk4 in 0..16 { | |
739 | let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &col_mb, r1_poc, r1_long, temporal_mv, cur_id, BLK4_TO_D8[blk4]); | |
740 | self.get_cur_blk4(blk4).mv = [mv0, mv1]; | |
741 | self.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx = [ref0, ref1]; | |
742 | } | |
743 | } else if col_mb.mb_type.is_16x16_ref() || !temporal_mv { | |
744 | let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &col_mb, r1_poc, r1_long, temporal_mv, cur_id, 0); | |
745 | self.apply_to_blk4(|blk4| blk4.mv = [mv0, mv1]); | |
746 | self.apply_to_blk8(|blk8| blk8.ref_idx = [ref0, ref1]); | |
747 | } else { | |
748 | for blk4 in 0..16 { | |
749 | let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &col_mb, r1_poc, r1_long, temporal_mv, cur_id, blk4); | |
750 | self.get_cur_blk4(blk4).mv = [mv0, mv1]; | |
751 | self.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx = [ref0, ref1]; | |
752 | } | |
753 | } | |
754 | } | |
755 | pub fn predict_direct_sub(&mut self, frame_refs: &SliceRefs, temporal_mv: bool, direct8x8: bool, cur_id: u16, blk4: usize) { | |
756 | let src_blk = if !direct8x8 { blk4 } else { BLK4_TO_D8[blk4] }; | |
757 | let (mbi, r1_poc, r1_long) = frame_refs.get_colocated_info(self.mb_x, self.mb_y); | |
758 | let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &mbi, r1_poc, r1_long, temporal_mv, cur_id, src_blk); | |
759 | self.get_cur_blk4(blk4).mv = [mv0, mv1]; | |
760 | self.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx = [ref0, ref1]; | |
761 | } | |
762 | #[allow(clippy::nonminimal_bool)] | |
763 | pub fn get_direct_mv(&self, frame_refs: &SliceRefs, mbi: &FrameMBInfo, r1_poc: u16, r1_long: bool, temporal_mv: bool, cur_id: u16, blk4: usize) -> (MV, PicRef, MV, PicRef) { | |
764 | let blk8 = blk4_to_blk8(blk4); | |
765 | let (col_mv, r0_poc, col_idx) = if mbi.ref_poc[blk8] == [MISSING_POC; 2] { | |
766 | (ZERO_MV, MISSING_POC, MISSING_REF) | |
767 | } else if mbi.ref_poc[blk8][0] != MISSING_POC { | |
768 | (mbi.mv[blk4][0], mbi.ref_poc[blk8][0], mbi.ref_idx[blk8][0]) | |
769 | } else { | |
770 | (mbi.mv[blk4][1], mbi.ref_poc[blk8][1], mbi.ref_idx[blk8][1]) | |
771 | }; | |
772 | let (col_ref, r0_long) = frame_refs.map_ref0(r0_poc); | |
773 | if temporal_mv { | |
774 | let td = (i32::from(r1_poc) - i32::from(r0_poc)).max(-128).min(127); | |
775 | if r0_long || td == 0 { | |
776 | (col_mv, col_ref, ZERO_MV, ZERO_REF) | |
777 | } else { | |
778 | let tx = (16384 + (td / 2).abs()) / td; | |
779 | let tb = (i32::from(cur_id) - i32::from(r0_poc)).max(-128).min(127); | |
780 | let scale = ((tb * tx + 32) >> 6).max(-1024).min(1023); | |
781 | let mv0 = MV { | |
782 | x: ((i32::from(col_mv.x) * scale + 128) >> 8) as i16, | |
783 | y: ((i32::from(col_mv.y) * scale + 128) >> 8) as i16, | |
784 | }; | |
785 | let mv1 = mv0 - col_mv; | |
786 | (mv0, col_ref, mv1, ZERO_REF) | |
787 | } | |
788 | } else { | |
789 | let blk4 = 0; // we generate the same MV prediction for the whole MB | |
790 | let blk8 = blk4_to_blk8(blk4); | |
791 | let midx = self.get_cur_blk4_idx(blk4); | |
792 | let ridx = self.get_cur_blk8_idx(blk8); | |
793 | let ridx_c = self.get_cur_blk8_idx(blk8) + 16 / 8 - self.blk8.stride; | |
794 | ||
795 | let mv_a = self.blk4.data[midx - 1].mv; | |
796 | let mv_b = self.blk4.data[midx - self.blk4.stride].mv; | |
797 | let mut mv_c = self.blk4.data[midx - self.blk4.stride + 16 / 4].mv; | |
798 | ||
799 | let ref_a = self.blk8.data[ridx - 1].ref_idx; | |
800 | let ref_b = self.blk8.data[ridx - self.blk8.stride].ref_idx; | |
801 | let mut ref_c = self.blk8.data[ridx_c].ref_idx; | |
802 | ||
803 | if ref_c == [MISSING_REF; 2] { | |
804 | mv_c = self.blk4.data[midx - self.blk4.stride - 1].mv; | |
805 | ref_c = self.blk8.data[ridx - self.blk8.stride - 1].ref_idx; | |
806 | } | |
807 | let mut refs = [INVALID_REF; 2]; | |
808 | for cur_ref in [ref_a, ref_b, ref_c].iter() { | |
809 | refs[0] = refs[0].min_pos(cur_ref[0]); | |
810 | refs[1] = refs[1].min_pos(cur_ref[1]); | |
811 | } | |
812 | if refs == [INVALID_REF; 2] { | |
813 | return (ZERO_MV, ZERO_REF, ZERO_MV, ZERO_REF); | |
814 | } | |
815 | ||
816 | let mut col_zero = true; | |
817 | if r1_long || col_idx != ZERO_REF { | |
818 | col_zero = false; | |
819 | } | |
820 | if col_mv.x.abs() > 1 || col_mv.y.abs() > 1 { | |
821 | col_zero = false; | |
822 | } | |
823 | let mut mvs = [ZERO_MV; 2]; | |
824 | for ref_l in 0..2 { | |
825 | if mbi.mb_type.is_intra() || (!refs[ref_l].not_avail() && !(refs[ref_l] == ZERO_REF && col_zero)) { | |
826 | let ref_idx = refs[ref_l]; | |
827 | mvs[ref_l] = if ref_b[ref_l] == MISSING_REF && ref_c[ref_l] == MISSING_REF { | |
828 | mv_a[ref_l] | |
829 | } else { | |
830 | let count = ((ref_a[ref_l] == ref_idx) as u8) + ((ref_b[ref_l] == ref_idx) as u8) + ((ref_c[ref_l] == ref_idx) as u8); | |
831 | if count == 1 { | |
832 | if ref_a[ref_l] == ref_idx { | |
833 | mv_a[ref_l] | |
834 | } else if ref_b[ref_l] == ref_idx { | |
835 | mv_b[ref_l] | |
836 | } else { | |
837 | mv_c[ref_l] | |
838 | } | |
839 | } else { | |
840 | MV::pred(mv_a[ref_l], mv_b[ref_l], mv_c[ref_l]) | |
841 | } | |
842 | }; | |
843 | } | |
844 | } | |
845 | (mvs[0], refs[0], mvs[1], refs[1]) | |
846 | } | |
847 | } | |
848 | pub fn fill_mv(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, mv: MV) { | |
849 | let start = self.get_cur_blk4_idx(0) + xpos / 4 + ypos / 4 * self.blk4.stride; | |
850 | for row in self.blk4.data[start..].chunks_mut(self.blk4.stride).take(bh / 4) { | |
851 | for blk in row[..bw / 4].iter_mut() { | |
852 | blk.mv[ref_l] = mv; | |
853 | } | |
854 | } | |
855 | } | |
856 | pub fn fill_mvd(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, mv: MV) { | |
857 | let mvd = MV{ x: mv.x.abs().min(128), y: mv.y.abs().min(128) }; | |
858 | let start = self.get_cur_blk4_idx(0) + xpos / 4 + ypos / 4 * self.blk4.stride; | |
859 | for row in self.blk4.data[start..].chunks_mut(self.blk4.stride).take(bh / 4) { | |
860 | for blk in row[..bw / 4].iter_mut() { | |
861 | blk.mvd[ref_l] = mvd; | |
862 | } | |
863 | } | |
864 | } | |
865 | pub fn fill_ref(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, ref_idx: PicRef) { | |
866 | let start = self.get_cur_blk8_idx(0) + xpos / 8 + ypos / 8 * self.blk8.stride; | |
867 | if bw < 8 || bh < 8 { | |
868 | self.blk8.data[start].ref_idx[ref_l] = ref_idx; | |
869 | } else { | |
870 | for row in self.blk8.data[start..].chunks_mut(self.blk8.stride).take(bh / 8) { | |
871 | for blk in row[..bw / 8].iter_mut() { | |
872 | blk.ref_idx[ref_l] = ref_idx; | |
873 | } | |
874 | } | |
875 | } | |
876 | } | |
877 | } | |
878 | ||
879 | fn mvdiff4(mv1: MV, mv2: MV) -> bool { | |
880 | let mv = mv1 - mv2; | |
881 | (mv.x.abs() >= 4) || (mv.y.abs() >= 4) | |
882 | } |