1 use nihav_core::frame::NASimpleVideoFrame;
2 use nihav_codec_support::codecs::{MV, ZERO_MV};
3 use nihav_codec_support::data::GenericCache;
5 use super::pic_ref::FrameMBInfo;
8 #[derive(Clone,Copy,Debug,PartialEq)]
15 #[derive(Clone,Copy,Debug,PartialEq,Default)]
20 Intra16x16(u8, u8, u8),
39 pub fn is_intra(self) -> bool {
40 matches!(self, MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM)
42 pub fn is_intra16x16(self) -> bool {
43 matches!(self, MBType::Intra16x16(_, _, _))
45 pub fn is_skip(self) -> bool {
46 matches!(self, MBType::PSkip | MBType::BSkip)
48 pub fn is_4x4(self) -> bool { self.num_parts() == 4 }
49 pub fn is_l0(self, part: usize) -> bool {
51 MBType::B16x16(mode) => mode == BMode::L0,
52 MBType::B16x8(mode0, mode1) | MBType::B8x16(mode0, mode1) => {
59 MBType::Direct | MBType::BSkip => false,
63 pub fn is_l1(self, part: usize) -> bool {
65 MBType::B16x16(mode) => mode == BMode::L1,
66 MBType::B16x8(mode0, mode1) | MBType::B8x16(mode0, mode1) => {
76 pub fn num_parts(self) -> usize {
78 MBType::Intra4x4 | MBType::Intra8x8 | MBType::Intra16x16(_, _, _) | MBType::PCM |
80 MBType::Direct | MBType::BSkip
85 MBType::P16x8 | MBType::P8x16 |
86 MBType::B16x8(_, _) | MBType::B8x16(_, _)
91 pub fn size(self) -> (usize, usize) {
95 MBType::Intra16x16(_, _, _) |
103 MBType::P16x8 | MBType::B16x8(_, _) => (16, 8),
104 MBType::P8x16 | MBType::B8x16(_, _) => (8, 16),
110 #[derive(Clone,Copy,Debug,PartialEq,Default)]
125 pub fn num_parts(self) -> usize {
127 SubMBType::P8x8 | SubMBType::Direct8x8 | SubMBType::B8x8(_) => 1,
128 SubMBType::P4x4 | SubMBType::B4x4(_) => 4,
132 pub fn size(self) -> (usize, usize) {
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),
140 pub fn is_l0(self) -> bool {
142 SubMBType::B8x8(mode) | SubMBType::B8x4(mode) |
143 SubMBType::B4x8(mode) | SubMBType::B4x4(mode) => {
149 pub fn is_l1(self) -> bool {
151 SubMBType::B8x8(mode) | SubMBType::B8x4(mode) |
152 SubMBType::B4x8(mode) | SubMBType::B4x4(mode) => {
161 #[derive(Clone,Copy,Debug,PartialEq,Default)]
162 pub enum CompactMBType {
187 pub fn is_intra(self) -> bool {
188 matches!(self, CompactMBType::Intra4x4 | CompactMBType::Intra8x8 | CompactMBType::Intra16x16)
190 pub fn is_intra16orpcm(self) -> bool {
191 matches!(self, CompactMBType::Intra16x16 | CompactMBType::PCM)
193 pub fn is_skip(self) -> bool {
194 matches!(self, CompactMBType::PSkip | CompactMBType::BSkip)
196 pub fn is_direct(self) -> bool {
197 matches!(self, CompactMBType::BSkip | CompactMBType::Direct | CompactMBType::None)
199 pub fn is_inter(self) -> bool {
200 !self.is_intra() && !self.is_skip() && self != CompactMBType::PCM
202 pub fn is_16x16_ref(self) -> bool {
204 CompactMBType::Intra4x4 |
205 CompactMBType::Intra8x8 |
206 CompactMBType::Intra16x16 |
208 CompactMBType::P16x16 |
209 CompactMBType::B16x16)
213 impl From<MBType> for CompactMBType {
214 fn from(mbtype: MBType) -> Self {
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,
237 #[derive(Clone,Copy,Debug,PartialEq,Default)]
238 pub enum IntraPredMode {
253 pub fn is_none(self) -> bool { self == IntraPredMode::None }
254 pub fn into_pred_idx(self) -> i8 {
263 impl From<u8> for IntraPredMode {
264 fn from(val: u8) -> Self {
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,
280 impl From<IntraPredMode> for u8 {
281 fn from(val: IntraPredMode) -> Self {
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,
297 pub const MISSING_POC: u16 = 0xFFFF;
299 #[derive(Clone,Copy,Debug)]
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;
310 pub fn new(ref_idx: u8) -> Self {
313 pub fn not_avail(self) -> bool {
314 self == MISSING_REF || self == INVALID_REF
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)),
329 impl Default for PicRef {
330 fn default() -> Self { MISSING_REF }
333 impl PartialEq for PicRef {
334 fn eq(&self, other: &Self) -> bool {
335 (self.ref_idx | DIRECT_FLAG) == (other.ref_idx | DIRECT_FLAG)
339 impl std::fmt::Display for PicRef {
340 fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
341 if *self == MISSING_REF {
343 } else if *self == INVALID_REF {
346 write!(f, "{}", self.ref_idx & !DIRECT_FLAG)
351 #[derive(Clone,Copy,Default)]
353 pub mb_type: CompactMBType,
355 pub coded_flags: u32,
360 pub transform_8x8: bool,
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 ];
368 #[derive(Clone,Copy)]
369 pub struct Blk8Data {
370 pub ref_idx: [PicRef; 2],
371 pub ncoded_c: [u8; 2],
374 impl Default for Blk8Data {
375 fn default() -> Self {
377 ref_idx: [MISSING_REF; 2],
383 #[derive(Clone,Copy,Default)]
384 pub struct Blk4Data {
386 pub ipred: IntraPredMode,
391 pub struct SliceState {
398 pub mb: GenericCache<MBData>,
399 pub blk8: GenericCache<Blk8Data>,
400 pub blk4: GenericCache<Blk4Data>,
402 pub deblock: [u8; 16],
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],
413 const BLK4_TO_D8: [usize; 16] = [ 0, 0, 3, 3, 0, 0, 3, 3, 12, 12, 15, 15, 12, 12, 15, 15 ];
416 pub fn new() -> Self {
423 mb: GenericCache::new(0, 0, MBData::default()),
424 blk8: GenericCache::new(0, 0, Blk8Data::default()),
425 blk4: GenericCache::new(0, 0, Blk4Data::default()),
432 top_line_y: Vec::new(),
434 top_line_c: [Vec::new(), Vec::new()],
438 pub fn reset(&mut self, mb_w: usize, mb_h: usize, mb_pos: usize) {
441 self.mb_start = mb_pos;
443 self.mb_x = mb_pos % mb_w;
444 self.mb_y = mb_pos / mb_w;
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());
453 self.has_top = false;
454 self.has_left = false;
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];
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])) {
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)) {
481 pub fn fill_deblock(&mut self, frefs: &SliceRefs, deblock_mode: u8, is_s: bool) {
482 if deblock_mode == 1 {
486 self.deblock = [0; 16];
488 let tx8x8 = self.get_cur_mb().transform_8x8;
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();
494 let mut coded_cache = [false; 25];
495 let mut mv_cache = [[ZERO_MV; 2]; 25];
496 let mut ref_cache = [[INVALID_REF; 2]; 25];
498 if self.mb_y != 0 || self.has_top {
499 for (x, (cc, mv)) in coded_cache[1..5].iter_mut().zip(mv_cache[1..5].iter_mut()).enumerate() {
500 let blk4 = self.get_top_blk4(x);
501 *cc = blk4.ncoded != 0;
504 let blk8 = self.get_top_blk8(x / 2);
505 ref_cache[x + 1] = blk8.ref_idx;
507 ref_cache[x + 1] = ref_cache[x];
511 for (y, (ccs, mvs)) in coded_cache[5..].chunks_exact_mut(5).zip(
512 mv_cache[5..].chunks_exact_mut(5)).enumerate() {
513 if self.has_left || self.mb_x != 0 {
514 let blk4 = self.get_left_blk4(y * 4);
515 ccs[0] = blk4.ncoded != 0;
518 let blk8 = self.get_left_blk8(y);
519 ref_cache[y * 5 + 5] = blk8.ref_idx;
521 ref_cache[y * 5 + 5] = ref_cache[y * 5];
524 for (x, (cc, mv)) in ccs[1..].iter_mut().zip(mvs[1..].iter_mut()).enumerate() {
525 let blk4 = self.get_cur_blk4(x + y * 4);
526 *cc = blk4.ncoded != 0;
528 ref_cache[x + 1 + (y + 1) * 5] = if ((x & 1) == 0) && ((y & 1) == 0) {
529 self.get_cur_blk8(x / 2 + y).ref_idx
531 ref_cache[(x & !1) + 1 + ((y & !1) + 1) * 5]
536 for (y, (((top_ccs, cur_ccs), (top_mvs, cur_mvs)), (cur_refs, top_refs))) in
537 coded_cache.chunks_exact(5).take(4).zip(coded_cache[5..].chunks_exact(5)).zip(
538 mv_cache.chunks_exact(5).zip(mv_cache[5..].chunks_exact(5))).zip(
539 ref_cache[5..].chunks_exact(5).zip(ref_cache.chunks_exact(5))).enumerate() {
540 let can_do_top = y != 0 || (self.mb_y != 0 && (self.has_top || deblock_mode != 2));
541 if can_do_top && (!tx8x8 || (y & 1) == 0) {
542 if is_s || cur_intra || top_intra {
543 let val = if y == 0 { 0x40 } else { 0x30 };
544 for el in self.deblock[y * 4..][..4].iter_mut() { *el |= val; }
546 for (x, (((&cur_cc, &top_cc), (cur_mv, top_mv)), (&cur_ref, &top_ref))) in
547 cur_ccs[1..].iter().zip(top_ccs[1..].iter()).zip(
548 cur_mvs[1..].iter().zip(top_mvs[1..].iter())).zip(
549 cur_refs[1..].iter().zip(
550 top_refs[1..].iter())).take(4).enumerate() {
551 if cur_cc || top_cc {
552 self.deblock[y * 4 + x] |= 0x20;
554 if mvdiff4(cur_mv, top_mv) || !frefs.cmp_refs(cur_ref, top_ref) {
555 self.deblock[y * 4 + x] |= 0x10;
561 let mut lleft_intra = left_intra;
562 for (x, (((&cur_cc, &left_cc), (cur_mv, left_mv)), (&cur_ref, &left_ref))) in
563 cur_ccs[1..].iter().zip(cur_ccs.iter()).zip(
564 cur_mvs[1..].iter().zip(cur_mvs.iter())).zip(
565 cur_refs[1..].iter().zip(cur_refs.iter())).enumerate() {
566 let skip_8 = tx8x8 && (x & 1) != 0;
567 let can_do_left = x > 0 || self.has_left || (self.mb_x != 0 && deblock_mode != 2);
572 } else if is_s || cur_intra || lleft_intra {
573 self.deblock[y * 4 + x] |= if x == 0 { 4 } else { 3 };
574 } else if cur_cc || left_cc {
575 self.deblock[y * 4 + x] |= 2;
577 if mvdiff4(cur_mv, left_mv) || !frefs.cmp_refs(cur_ref, left_ref) {
578 self.deblock[y * 4 + x] |= 1;
581 lleft_intra = cur_intra;
583 top_intra = cur_intra;
586 pub fn next_mb(&mut self) {
588 self.has_left = true;
589 if self.mb_x == self.mb_w {
592 self.mb.update_row();
593 self.blk8.update_row();
594 self.blk4.update_row();
596 self.has_left = false;
598 self.has_top = self.mb_x + self.mb_y * self.mb_w >= self.mb_start + self.mb_w;
600 pub fn get_cur_mb_idx(&self) -> usize { self.mb.xpos + self.mb_x }
601 pub fn get_cur_blk8_idx(&self, blk_no: usize) -> usize {
602 self.blk8.xpos + self.mb_x * 2 + (blk_no & 1) + (blk_no >> 1) * self.blk8.stride
604 pub fn get_cur_blk4_idx(&self, blk_no: usize) -> usize {
605 self.blk4.xpos + self.mb_x * 4 + (blk_no & 3) + (blk_no >> 2) * self.blk4.stride
607 pub fn get_cur_mb(&mut self) -> &mut MBData {
608 let idx = self.get_cur_mb_idx();
609 &mut self.mb.data[idx]
611 pub fn get_left_mb(&self) -> &MBData {
612 &self.mb.data[self.get_cur_mb_idx() - 1]
614 pub fn get_top_mb(&self) -> &MBData {
615 &self.mb.data[self.get_cur_mb_idx() - self.mb.stride]
617 pub fn get_cur_blk8(&mut self, blk_no: usize) -> &mut Blk8Data {
618 let idx = self.get_cur_blk8_idx(blk_no);
619 &mut self.blk8.data[idx]
621 pub fn get_left_blk8(&self, blk_no: usize) -> &Blk8Data {
622 &self.blk8.data[self.get_cur_blk8_idx(blk_no) - 1]
624 pub fn get_top_blk8(&self, blk_no: usize) -> &Blk8Data {
625 &self.blk8.data[self.get_cur_blk8_idx(blk_no) - self.blk8.stride]
627 pub fn get_cur_blk4(&mut self, blk_no: usize) -> &mut Blk4Data {
628 let idx = self.get_cur_blk4_idx(blk_no);
629 &mut self.blk4.data[idx]
631 pub fn get_left_blk4(&self, blk_no: usize) -> &Blk4Data {
632 &self.blk4.data[self.get_cur_blk4_idx(blk_no) - 1]
634 pub fn get_top_blk4(&self, blk_no: usize) -> &Blk4Data {
635 &self.blk4.data[self.get_cur_blk4_idx(blk_no) - self.blk4.stride]
638 pub fn apply_to_blk8<F: (Fn(&mut Blk8Data))>(&mut self, f: F) {
639 let start = self.get_cur_blk8_idx(0);
640 for row in self.blk8.data[start..].chunks_mut(self.blk8.stride).take(2) {
641 for el in row[..2].iter_mut() {
646 pub fn apply_to_blk4<F: (Fn(&mut Blk4Data))>(&mut self, f: F) {
647 let start = self.get_cur_blk4_idx(0);
648 for row in self.blk4.data[start..].chunks_mut(self.blk4.stride).take(4) {
649 for el in row[..4].iter_mut() {
655 pub fn fill_ipred(&mut self, imode: IntraPredMode) {
656 self.apply_to_blk4(|blk| blk.ipred = imode);
658 pub fn fill_ncoded(&mut self, nc: u8) {
659 self.apply_to_blk4(|blk| blk.ncoded = nc);
660 self.apply_to_blk8(|blk| blk.ncoded_c = [nc; 2]);
662 pub fn reset_mb_mv(&mut self) {
663 self.apply_to_blk8(|blk| blk.ref_idx = [INVALID_REF; 2]);
666 pub fn get_mv_ctx(&self, xoff: usize, yoff: usize, ref_l: usize) -> (usize, usize) {
667 let blk_no = xoff / 4 + yoff;
668 let mv_a = self.get_left_blk4(blk_no).mvd[ref_l];
669 let mv_b = self.get_top_blk4(blk_no).mvd[ref_l];
670 let mv = mv_a + mv_b;
671 let ctx0 = if mv.x < 3 { 0 } else if mv.x <= 32 { 1 } else { 2 };
672 let ctx1 = if mv.y < 3 { 0 } else if mv.y <= 32 { 1 } else { 2 };
675 pub fn get_mv_ref_ctx(&self, xoff: usize, yoff: usize, ref_l: usize) -> usize {
676 let blk_no = xoff / 8 + (yoff / 8) * 2;
678 let left_ref = self.get_left_blk8(blk_no).ref_idx[ref_l];
679 let top_ref = self.get_top_blk8(blk_no).ref_idx[ref_l];
680 if !left_ref.not_avail() && !left_ref.is_direct() && left_ref.index() > 0 {
683 if !top_ref.not_avail() && !top_ref.is_direct() && top_ref.index() > 0 {
688 #[allow(clippy::if_same_then_else)]
689 pub fn predict(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, diff_mv: MV, ref_idx: PicRef) {
690 let midx = self.get_cur_blk4_idx(0) + xpos / 4 + ypos / 4 * self.blk4.stride;
691 let ridx = self.get_cur_blk8_idx(0) + xpos / 8 + ypos / 8 * self.blk8.stride;
692 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 };
694 let mv_a = self.blk4.data[midx - 1].mv[ref_l];
695 let mv_b = self.blk4.data[midx - self.blk4.stride].mv[ref_l];
696 let mut mv_c = self.blk4.data[midx - self.blk4.stride + bw / 4].mv[ref_l];
698 let rx = if (xpos & 4) != 0 { 0 } else { 1 };
699 let ry = if (ypos & 4) != 0 { 0 } else { self.blk8.stride };
700 let ref_a = self.blk8.data[ridx - rx].ref_idx[ref_l];
701 let ref_b = self.blk8.data[ridx - ry].ref_idx[ref_l];
702 let mut ref_c = self.blk8.data[ridx_c].ref_idx[ref_l];
704 if ref_c == MISSING_REF || (((xpos + bw) & 4) == 0 && (ypos & 4) != 0) {
705 mv_c = self.blk4.data[midx - self.blk4.stride - 1].mv[ref_l];
706 ref_c = self.blk8.data[ridx - rx - ry].ref_idx[ref_l];
709 let pred_mv = if bw == 16 && bh == 8 && ypos == 0 && ref_b == ref_idx {
711 } else if bw == 16 && bh == 8 && ypos != 0 && ref_a == ref_idx {
713 } else if bw == 8 && bh == 16 && xpos == 0 && ref_a == ref_idx {
715 } else if bw == 8 && bh == 16 && xpos != 0 && ref_c == ref_idx {
717 } else if ref_b == MISSING_REF && ref_c == MISSING_REF {
720 let count = ((ref_a == ref_idx) as u8) + ((ref_b == ref_idx) as u8) + ((ref_c == ref_idx) as u8);
722 if ref_a == ref_idx {
724 } else if ref_b == ref_idx {
730 MV::pred(mv_a, mv_b, mv_c)
734 let mv = pred_mv + diff_mv;
735 self.fill_mv (xpos, ypos, bw, bh, ref_l, mv);
736 self.fill_ref(xpos, ypos, bw, bh, ref_l, ref_idx);
738 pub fn predict_pskip(&mut self) {
739 let midx = self.get_cur_blk4_idx(0);
740 let ridx = self.get_cur_blk8_idx(0);
742 let mv_a = self.blk4.data[midx - 1].mv[0];
743 let mv_b = self.blk4.data[midx - self.blk4.stride].mv[0];
744 let mut mv_c = self.blk4.data[midx - self.blk4.stride + 4].mv[0];
746 let ref_a = self.blk8.data[ridx - 1].ref_idx[0];
747 let ref_b = self.blk8.data[ridx - self.blk8.stride].ref_idx[0];
748 let mut ref_c = self.blk8.data[ridx - self.blk8.stride + 2].ref_idx[0];
750 if ref_c == MISSING_REF {
751 mv_c = self.blk4.data[midx - self.blk4.stride - 1].mv[0];
752 ref_c = self.blk8.data[ridx - self.blk8.stride - 1].ref_idx[0];
755 let ref_idx = ZERO_REF;
756 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) {
759 let count = ((ref_a == ref_idx) as u8) + ((ref_b == ref_idx) as u8) + ((ref_c == ref_idx) as u8);
761 if ref_a == ref_idx {
763 } else if ref_b == ref_idx {
769 MV::pred(mv_a, mv_b, mv_c)
773 self.fill_mv (0, 0, 16, 16, 0, mv);
774 self.fill_ref(0, 0, 16, 16, 0, ref_idx);
776 pub fn predict_direct_mb(&mut self, frame_refs: &SliceRefs, temporal_mv: bool, direct_8x8: bool, cur_id: u16) {
777 let (col_mb, r1_poc, r1_long) = frame_refs.get_colocated_info(self.mb_x, self.mb_y);
780 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]);
781 self.get_cur_blk4(blk4).mv = [mv0, mv1];
782 self.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx = [ref0, ref1];
784 } else if col_mb.mb_type.is_16x16_ref() || !temporal_mv {
785 let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &col_mb, r1_poc, r1_long, temporal_mv, cur_id, 0);
786 self.apply_to_blk4(|blk4| blk4.mv = [mv0, mv1]);
787 self.apply_to_blk8(|blk8| blk8.ref_idx = [ref0, ref1]);
790 let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &col_mb, r1_poc, r1_long, temporal_mv, cur_id, blk4);
791 self.get_cur_blk4(blk4).mv = [mv0, mv1];
792 self.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx = [ref0, ref1];
796 pub fn predict_direct_sub(&mut self, frame_refs: &SliceRefs, temporal_mv: bool, direct8x8: bool, cur_id: u16, blk4: usize) {
797 let src_blk = if !direct8x8 { blk4 } else { BLK4_TO_D8[blk4] };
798 let (mbi, r1_poc, r1_long) = frame_refs.get_colocated_info(self.mb_x, self.mb_y);
799 let (mv0, ref0, mv1, ref1) = self.get_direct_mv(frame_refs, &mbi, r1_poc, r1_long, temporal_mv, cur_id, src_blk);
800 self.get_cur_blk4(blk4).mv = [mv0, mv1];
801 self.get_cur_blk8(blk4_to_blk8(blk4)).ref_idx = [ref0, ref1];
803 #[allow(clippy::nonminimal_bool)]
804 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) {
805 let blk8 = blk4_to_blk8(blk4);
806 let (col_mv, r0_poc, col_idx) = if mbi.ref_poc[blk8] == [MISSING_POC; 2] {
807 (ZERO_MV, MISSING_POC, MISSING_REF)
808 } else if mbi.ref_poc[blk8][0] != MISSING_POC {
809 (mbi.mv[blk4][0], mbi.ref_poc[blk8][0], mbi.ref_idx[blk8][0])
811 (mbi.mv[blk4][1], mbi.ref_poc[blk8][1], mbi.ref_idx[blk8][1])
813 let (col_ref, r0_long) = frame_refs.map_ref0(r0_poc);
815 let td = (i32::from(r1_poc) - i32::from(r0_poc)).max(-128).min(127);
816 if r0_long || td == 0 {
817 (col_mv, col_ref, ZERO_MV, ZERO_REF)
819 let tx = (16384 + (td / 2).abs()) / td;
820 let tb = (i32::from(cur_id) - i32::from(r0_poc)).max(-128).min(127);
821 let scale = ((tb * tx + 32) >> 6).max(-1024).min(1023);
823 x: ((i32::from(col_mv.x) * scale + 128) >> 8) as i16,
824 y: ((i32::from(col_mv.y) * scale + 128) >> 8) as i16,
826 let mv1 = mv0 - col_mv;
827 (mv0, col_ref, mv1, ZERO_REF)
830 let blk4 = 0; // we generate the same MV prediction for the whole MB
831 let blk8 = blk4_to_blk8(blk4);
832 let midx = self.get_cur_blk4_idx(blk4);
833 let ridx = self.get_cur_blk8_idx(blk8);
834 let ridx_c = self.get_cur_blk8_idx(blk8) + 16 / 8 - self.blk8.stride;
836 let mv_a = self.blk4.data[midx - 1].mv;
837 let mv_b = self.blk4.data[midx - self.blk4.stride].mv;
838 let mut mv_c = self.blk4.data[midx - self.blk4.stride + 16 / 4].mv;
840 let ref_a = self.blk8.data[ridx - 1].ref_idx;
841 let ref_b = self.blk8.data[ridx - self.blk8.stride].ref_idx;
842 let mut ref_c = self.blk8.data[ridx_c].ref_idx;
844 if ref_c == [MISSING_REF; 2] {
845 mv_c = self.blk4.data[midx - self.blk4.stride - 1].mv;
846 ref_c = self.blk8.data[ridx - self.blk8.stride - 1].ref_idx;
848 let mut refs = [INVALID_REF; 2];
849 for cur_ref in [ref_a, ref_b, ref_c].iter() {
850 refs[0] = refs[0].min_pos(cur_ref[0]);
851 refs[1] = refs[1].min_pos(cur_ref[1]);
853 if refs == [INVALID_REF; 2] {
854 return (ZERO_MV, ZERO_REF, ZERO_MV, ZERO_REF);
857 let mut col_zero = true;
858 if r1_long || col_idx != ZERO_REF {
861 if col_mv.x.abs() > 1 || col_mv.y.abs() > 1 {
864 let mut mvs = [ZERO_MV; 2];
866 if mbi.mb_type.is_intra() || (!refs[ref_l].not_avail() && !(refs[ref_l] == ZERO_REF && col_zero)) {
867 let ref_idx = refs[ref_l];
868 mvs[ref_l] = if ref_b[ref_l] == MISSING_REF && ref_c[ref_l] == MISSING_REF {
871 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);
873 if ref_a[ref_l] == ref_idx {
875 } else if ref_b[ref_l] == ref_idx {
881 MV::pred(mv_a[ref_l], mv_b[ref_l], mv_c[ref_l])
886 (mvs[0], refs[0], mvs[1], refs[1])
889 pub fn fill_mv(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, mv: MV) {
890 let start = self.get_cur_blk4_idx(0) + xpos / 4 + ypos / 4 * self.blk4.stride;
891 for row in self.blk4.data[start..].chunks_mut(self.blk4.stride).take(bh / 4) {
892 for blk in row[..bw / 4].iter_mut() {
897 pub fn fill_mvd(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, mv: MV) {
898 let mvd = MV{ x: mv.x.abs().min(128), y: mv.y.abs().min(128) };
899 let start = self.get_cur_blk4_idx(0) + xpos / 4 + ypos / 4 * self.blk4.stride;
900 for row in self.blk4.data[start..].chunks_mut(self.blk4.stride).take(bh / 4) {
901 for blk in row[..bw / 4].iter_mut() {
902 blk.mvd[ref_l] = mvd;
906 pub fn fill_ref(&mut self, xpos: usize, ypos: usize, bw: usize, bh: usize, ref_l: usize, ref_idx: PicRef) {
907 let start = self.get_cur_blk8_idx(0) + xpos / 8 + ypos / 8 * self.blk8.stride;
908 if bw < 8 || bh < 8 {
909 self.blk8.data[start].ref_idx[ref_l] = ref_idx;
911 for row in self.blk8.data[start..].chunks_mut(self.blk8.stride).take(bh / 8) {
912 for blk in row[..bw / 8].iter_mut() {
913 blk.ref_idx[ref_l] = ref_idx;
920 #[cfg(not(target_arch="x86_64"))]
921 fn mvdiff4(mv1: &[MV; 2], mv2: &[MV; 2]) -> bool {
922 let mvd0 = mv1[0] - mv2[0];
923 let mvd1 = mv1[1] - mv2[1];
924 (mvd0.x.abs() >= 4) || (mvd0.y.abs() >= 4) || (mvd1.x.abs() >= 4) || (mvd1.y.abs() >= 4)
927 #[cfg(target_arch="x86_64")]
928 fn mvdiff4(mv1: &[MV; 2], mv2: &[MV; 2]) -> bool {
930 let mut flag = false;
931 let ptr = std::mem::transmute::<*const MV, *const u64>(mv1.as_ptr());
933 let ptr = std::mem::transmute::<*const MV, *const u64>(mv2.as_ptr());
936 let tmp = m0.wrapping_sub(m1) as u16;
937 flag |= tmp.wrapping_add(3) > 6;