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duck/avc: improve decoder a bit
[nihav.git] / nihav-duck / src / codecs / vp7.rs
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587a6d78
KS		 1use nihav_core::codecs::*;
2use nihav_core::io::byteio::*;
3use nihav_core::data::GenericCache;
4use super::vpcommon::*;
5use super::vp7data::*;
6use super::vp7dsp::*;
7
8enum VPTreeDef<T: Copy> {
9 Index(u8),
10 Value(T),
11}
12
13trait VPTreeReader {
14 fn read_tree<T:Copy>(&mut self, tree_def: &[VPTreeDef<T>], tree_prob: &[u8]) -> T;
15}
16
17impl<'a> VPTreeReader for BoolCoder<'a> {
18 fn read_tree<T:Copy>(&mut self, tree_def: &[VPTreeDef<T>], tree_prob: &[u8]) -> T {
19 let mut idx = 0;
20
21 loop {
22 let bit = self.read_prob(tree_prob[idx >> 1]);
23 match tree_def[idx + (bit as usize)] {
24 VPTreeDef::Value(v) => return v,
25 VPTreeDef::Index(ix) => { idx = ix as usize; },
26 };
27 }
28 }
29}
30
31#[repr(u8)]
32#[derive(Clone,Copy,PartialEq,Debug)]
33enum PredMode {
34 DCPred,
35 HPred,
36 VPred,
37 TMPred,
38 BPred,
39
40 //sub-block prediction modes
41 LDPred,
42 RDPred,
43 VRPred,
44 VLPred,
45 HDPred,
46 HUPred,
47
48 Inter,
49}
50
51impl Default for PredMode {
52 fn default() -> Self { PredMode::DCPred }
53}
54
55impl PredMode {
56 fn to_b_mode(self) -> Self {
57 if self == PredMode::DCPred {
58 self
59 } else {
60 PredMode::TMPred
61 }
62 }
63 fn to_b_index(self) -> usize {
64 match self {
65 PredMode::DCPred => 0,
66 PredMode::TMPred => 1,
67 PredMode::VPred => 2,
68 PredMode::HPred => 3,
69 PredMode::LDPred => 4,
70 PredMode::RDPred => 5,
71 PredMode::VRPred => 6,
72 PredMode::VLPred => 7,
73 PredMode::HDPred => 8,
74 PredMode::HUPred => 9,
75 _ => unreachable!(),
76 }
77 }
78}
79
80const PITCH_MODE_NORMAL: u8 = 0;
81const PITCH_MODE_FOUR: u8 = 1;
82const PITCH_MODE_X2: u8 = 2;
83const PITCH_MODE_X4: u8 = 3;
84
85#[derive(Clone,Copy,Default)]
86struct MBFeature {
87 present_prob: u8,
88 tree_probs: [u8; 3],
89 def_val: [u8; 4],
90}
91
92#[derive(Clone,Copy,PartialEq)]
93enum DCTToken {
94 Zero,
95 One,
96 Two,
97 Three,
98 Four,
99 Cat1,
100 Cat2,
101 Cat3,
102 Cat4,
103 Cat5,
104 Cat6,
105 EOB,
106}
107
108fn expand_token(bc: &mut BoolCoder, token: DCTToken) -> i16 {
109 let cat;
110 match token {
111 DCTToken::Zero => return 0,
112 DCTToken::One => return if bc.read_bool() { -1 } else { 1 },
113 DCTToken::Two => return if bc.read_bool() { -2 } else { 2 },
114 DCTToken::Three => return if bc.read_bool() { -3 } else { 3 },
115 DCTToken::Four => return if bc.read_bool() { -4 } else { 4 },
116 DCTToken::Cat1 => cat = 0,
117 DCTToken::Cat2 => cat = 1,
118 DCTToken::Cat3 => cat = 2,
119 DCTToken::Cat4 => cat = 3,
120 DCTToken::Cat5 => cat = 4,
121 DCTToken::Cat6 => cat = 5,
122 _ => unreachable!(),
123 };
124 let mut add = 0i16;
125 let add_probs = &VP56_COEF_ADD_PROBS[cat];
126 for prob in add_probs.iter() {
127 if *prob == 128 { break; }
128 add = (add << 1) | (bc.read_prob(*prob) as i16);
129 }
130 let sign = bc.read_bool();
131 let level = VP56_COEF_BASE[cat] + add;
132 if !sign {
133 level
134 } else {
135 -level
136 }
137}
138
139struct SBParams<'a> {
140 coef_probs: &'a [[[[u8; 11]; 3]; 8]; 4],
141 scan: &'a [usize; 16],
142 qmat: &'a [i16; 16],
143}
144
145fn decode_subblock<'a>(bc: &mut BoolCoder, coeffs: &mut [i16; 16], ctype: usize, pctx: u8, sbparams: &SBParams) -> u8 {
146 const COEF_BANDS: [usize; 16] = [ 0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7 ];
147
148 let mut has_nz = 0;
149 let start = if ctype != 0 { 0 } else { 1 };
150 *coeffs = [0; 16];
151 let mut cval = pctx as usize;
152 for idx in start..16 {
153 let probs = &sbparams.coef_probs[ctype][COEF_BANDS[idx]][cval];
154 let tok = bc.read_tree(COEF_TREE, probs);
155 if tok == DCTToken::EOB { break; }
156 let level = expand_token(bc, tok);
157 coeffs[sbparams.scan[idx]] = level.wrapping_mul(sbparams.qmat[idx]);
158 cval = level.abs().min(2) as usize;
159 has_nz |= cval;
160 }
161 if has_nz > 0 { 1 } else { 0 }
162}
163
164#[derive(Clone,Copy,Default)]
165struct MBInfo {
166 mb_type: VPMBType,
167 ymode: PredMode,
168 uvmode: PredMode,
169 loop_str: u8,
170 upd_gf: bool,
171}
172
173#[derive(Default)]
174struct DecoderState {
175 features: [Option<MBFeature>; 4],
176
177 fading: bool,
178 fade_alpha: u16,
179 fade_beta: u16,
180
181 lf_simple: bool,
182 loop_filter_level: u8,
183 loop_sharpness: u8,
184
185 is_intra: bool,
186 version: u8,
187
188 kf_ymode_prob: [u8; 4],
189 kf_uvmode_prob: [u8; 3],
190
191 prob_intra_pred: u8,
192 prob_last_pred: u8,
193
194 coef_probs: [[[[u8; 11]; 3]; 8]; 4],
195 mv_probs: [[u8; 17]; 2],
196
197 force_quant: Option<u8>,
198 force_loop_str: Option<u8>,
199 force_gf_update: bool,
200 force_pitch: Option<u8>,
201
202 has_y2: bool,
203 pdc_pred_val: i16,
204 pdc_pred_count: usize,
205
206 ipred_ctx_y: IPredContext,
207 ipred_ctx_u: IPredContext,
208 ipred_ctx_v: IPredContext,
209}
210
211impl DecoderState {
212 fn reset(&mut self) {
213 self.kf_ymode_prob.copy_from_slice(Y_MODE_TREE_PROBS);
214 self.kf_uvmode_prob.copy_from_slice(UV_MODE_TREE_PROBS);
215 self.coef_probs.copy_from_slice(&DEFAULT_DCT_PROBS);
216 self.mv_probs.copy_from_slice(&DEFAULT_MV_PROBS);
217 }
218}
219
220#[derive(Clone,Copy,Debug,PartialEq)]
221enum MVSplitMode {
222 TopBottom,
223 LeftRight,
224 Quarters,
225 Sixteenths,
226}
227
228#[derive(Clone,Copy,Debug,PartialEq)]
229enum SubMVRef {
230 Left,
231 Above,
232 New,
233 Zero,
234}
235
236fn decode_mv_component(bc: &mut BoolCoder, probs: &[u8; 17]) -> i16 {
237 const LONG_VECTOR_ORDER: [usize; 7] = [ 0, 1, 2, 7, 6, 5, 4 ];
238
239 let val = if !bc.read_prob(probs[0]) {
240 bc.read_tree(SMALL_MV_TREE, &probs[2..9])
241 } else {
242 let raw_probs = &probs[9..];
243 let mut raw = 0;
244 for ord in LONG_VECTOR_ORDER.iter() {
245 raw |= (bc.read_prob(raw_probs[*ord]) as i16) << *ord;
246 }
247 if (raw & 0xF0) != 0 {
248 raw |= (bc.read_prob(raw_probs[3]) as i16) << 3;
249 } else {
250 raw |= 1 << 3;
251 }
252 raw
253 };
254 if (val == 0) || !bc.read_prob(probs[1]) {
255 val
256 } else {
257 -val
258 }
259}
260
261struct PredCache {
262 y_pred: GenericCache<u8>,
263 u_pred: GenericCache<u8>,
264 v_pred: GenericCache<u8>,
265 y2_pred: GenericCache<u8>,
266 y_pred_left: [u8; 4],
267 u_pred_left: [u8; 2],
268 v_pred_left: [u8; 2],
269 y2_pred_left: u8,
270}
271
272impl PredCache {
273 fn new() -> Self {
274 Self {
275 y_pred: GenericCache::new(1, 1, 0),
276 u_pred: GenericCache::new(1, 1, 0),
277 v_pred: GenericCache::new(1, 1, 0),
278 y2_pred: GenericCache::new(1, 1, 0),
279 y_pred_left: [0; 4],
280 u_pred_left: [0; 2],
281 v_pred_left: [0; 2],
282 y2_pred_left: 0,
283 }
284 }
285 fn resize(&mut self, mb_w: usize) {
286 self.y_pred = GenericCache::new(4, mb_w * 4 + 1, 0);
287 self.u_pred = GenericCache::new(2, mb_w * 2 + 1, 0);
288 self.v_pred = GenericCache::new(2, mb_w * 2 + 1, 0);
289 self.y2_pred = GenericCache::new(1, mb_w + 1, 0);
290 }
291 fn reset(&mut self) {
292 self.y_pred.reset();
293 self.u_pred.reset();
294 self.v_pred.reset();
295 self.y2_pred.reset();
296 self.y_pred_left = [0; 4];
297 self.u_pred_left = [0; 2];
298 self.v_pred_left = [0; 2];
299 self.y2_pred_left = 0;
300 }
301 fn update_row(&mut self) {
302 self.y_pred.update_row();
303 self.u_pred.update_row();
304 self.v_pred.update_row();
305 self.y2_pred.update_row();
306 }
307}
308
309struct VP7Decoder {
310 info: NACodecInfoRef,
311
312 shuf: VPShuffler,
313 width: usize,
314 height: usize,
315 mb_w: usize,
316 mb_h: usize,
317 mb_info: Vec<MBInfo>,
318 mvs: Vec<MV>,
319 mv_stride: usize,
320
321 ymodes: Vec<PredMode>,
322 ymode_stride: usize,
323 uvmodes: Vec<PredMode>,
324 uvmode_stride: usize,
325
326 dstate: DecoderState,
327 pcache: PredCache,
328
329 coeffs: [[i16; 16]; 25],
330 scan: [usize; 16],
331 qmat: [[[i16; 16]; 3]; 5],
332
333 mc_buf: NAVideoBufferRef<u8>,
334
335 tmp_scan: [usize; 16],
336}
337
338impl VP7Decoder {
339 fn new() -> Self {
340 let vt = alloc_video_buffer(NAVideoInfo::new(128, 128, false, YUV420_FORMAT), 4).unwrap();
341 let mut scan = [0; 16];
342 scan.copy_from_slice(&DEFAULT_SCAN_ORDER);
343 let mc_buf = vt.get_vbuf().unwrap();
344 Self {
345 info: NACodecInfoRef::default(),
346
347 shuf: VPShuffler::new(),
348 width: 0,
349 height: 0,
350 mb_w: 0,
351 mb_h: 0,
352 mb_info: Vec::new(),
353 mvs: Vec::new(),
354 mv_stride: 0,
355
356 ymodes: Vec::new(),
357 ymode_stride: 0,
358 uvmodes: Vec::new(),
359 uvmode_stride: 0,
360
361 dstate: DecoderState::default(),
362 pcache: PredCache::new(),
363
364 coeffs: [[0; 16]; 25],
365 scan,
366 tmp_scan: [0; 16],
367 qmat: [[[0; 16]; 3]; 5],
368
369 mc_buf,
370 }
371 }
372 fn set_dimensions(&mut self, width: usize, height: usize) {
373 if (width == self.width) && (height == self.height) {
374 return;
375 }
376 self.width = width;
377 self.height = height;
378 self.mb_w = (self.width + 15) >> 4;
379 self.mb_h = (self.height + 15) >> 4;
380 self.mb_info.resize(self.mb_w * self.mb_h, MBInfo::default());
381 self.mv_stride = self.mb_w * 4;
382 self.mvs.resize(self.mv_stride * self.mb_h * 4, ZERO_MV);
383
384 self.ymode_stride = self.mb_w * 4;
385 self.uvmode_stride = self.mb_w;
386 self.ymodes.resize(self.ymode_stride * self.mb_h * 4, PredMode::default());
387 self.uvmodes.resize(self.uvmode_stride * self.mb_h, PredMode::default());
388
389 self.pcache.resize(self.mb_w);
390 }
391 fn read_features(&mut self, bc: &mut BoolCoder) -> DecoderResult<()> {
392 for (i, feat) in self.dstate.features.iter_mut().enumerate() {
393 if bc.read_bool() {
394 let mut feature = MBFeature::default();
395 feature.present_prob = bc.read_byte();
396 for tp in feature.tree_probs.iter_mut() {
397 if bc.read_bool() {
398 *tp = bc.read_byte();
399 } else {
400 *tp = 255;
401 }
402 }
403 if i != 2 {
404 let fbits = match i {
405 0 => 7,
406 1 => 6,
407 _ => if self.dstate.version == 0 { 8 } else { 5 },
408 };
409 for dval in feature.def_val.iter_mut() {
410 if bc.read_bool() {
411 *dval = bc.read_bits(fbits) as u8;
412 } else {
413 *dval = 0;
414 }
415 }
416 }
417 *feat = Some(feature);
418 } else {
419 *feat = None;
420 }
421 }
422 Ok(())
423 }
424 fn read_dct_coef_prob_upd(&mut self, bc: &mut BoolCoder) -> DecoderResult<()> {
425 for i in 0..4 {
426 for j in 0..8 {
427 for k in 0..3 {
428 for l in 0..11 {
429 if bc.read_prob(DCT_UPDATE_PROBS[i][j][k][l]) {
430 self.dstate.coef_probs[i][j][k][l] = bc.read_byte();
431 }
432 }
433 }
434 }
435 }
436 Ok(())
437 }
438 fn read_mv_prob_upd(&mut self, bc: &mut BoolCoder) -> DecoderResult<()> {
439 for comp in 0..2 {
440 for i in 0..17 {
441 if bc.read_prob(MV_UPDATE_PROBS[comp][i]) {
442 self.dstate.mv_probs[comp][i] = bc.read_probability();
443 }
444 }
445 }
446 Ok(())
447 }
448 fn decode_mb_features(&mut self, bc: &mut BoolCoder, _mb_x: usize, _mb_y: usize) -> DecoderResult<()> {
449 self.dstate.force_quant = None;
450 self.dstate.force_loop_str = None;
451 self.dstate.force_gf_update = false;
452 self.dstate.force_pitch = None;
453 for (i, feat) in self.dstate.features.iter().enumerate() {
454 if let Some(feat) = feat {
455 let present = bc.read_prob(feat.present_prob);
456 if present {
457 let ftype_idx = bc.read_tree(FEATURE_TREE, &feat.tree_probs);
458 let val = feat.def_val[ftype_idx];
459 match i {
460 0 => self.dstate.force_quant = Some(ftype_idx as u8),
461 1 => self.dstate.force_loop_str = Some(val),
462 2 => self.dstate.force_gf_update = true,
463 _ => self.dstate.force_pitch = Some(val),
464 };
465 }
466 }
467 }
468 Ok(())
469 }
470 fn decode_residue(&mut self, bc: &mut BoolCoder, mb_x: usize, mb_idx: usize) {
471 let qmat_idx = if let Some(idx) = self.dstate.force_quant { (idx as usize) + 1 } else { 0 };
472 let mut sbparams = SBParams {
473 scan: &DEFAULT_SCAN_ORDER,
474 qmat: &self.qmat[qmat_idx][2],
475 coef_probs: &self.dstate.coef_probs,
476 };
477 let mut has_ac = [false; 25];
478 let ytype;
479 if self.dstate.has_y2 {
480 let pred = &self.pcache.y2_pred;
481 let pidx = pred.xpos + mb_x;
482 let pctx = self.pcache.y2_pred_left + pred.data[pidx - pred.stride];
483
484 let has_nz = decode_subblock(bc, &mut self.coeffs[24], 1, pctx, &sbparams);
485 self.pcache.y2_pred.data[pidx] = has_nz;
486 self.pcache.y2_pred_left = has_nz;
487 has_ac[24] = has_nz > 0;
488
489 ytype = 0;
490 } else {
491 let pred = &mut self.pcache.y2_pred;
492 let pidx = pred.xpos + mb_x;
493 pred.data[pidx] = pred.data[pidx - pred.stride];
494
495 ytype = 3;
496 }
497 sbparams.scan = &self.scan;
498 sbparams.qmat = &self.qmat[qmat_idx][0];
499 for i in 0..16 {
500 let bx = i & 3;
501 let by = i >> 2;
502 let pred = &self.pcache.y_pred;
503 let pidx = pred.xpos + mb_x * 4 + bx + by * pred.stride;
504 let pctx = self.pcache.y_pred_left[by] + pred.data[pidx - pred.stride];
505
506 let has_nz = decode_subblock(bc, &mut self.coeffs[i], ytype, pctx, &sbparams);
507 self.pcache.y_pred.data[pidx] = has_nz;
508 self.pcache.y_pred_left[by] = has_nz;
509 has_ac[i] = has_nz > 0;
510 }
511 sbparams.qmat = &self.qmat[qmat_idx][1];
512 for i in 16..20 {
513 let bx = i & 1;
514 let by = (i >> 1) & 1;
515 let pred = &self.pcache.u_pred;
516 let pidx = pred.xpos + mb_x * 2 + bx + by * pred.stride;
517 let pctx = self.pcache.u_pred_left[by] + pred.data[pidx - pred.stride];
518
519 let has_nz = decode_subblock(bc, &mut self.coeffs[i], 2, pctx, &sbparams);
520 self.pcache.u_pred.data[pidx] = has_nz;
521 self.pcache.u_pred_left[by] = has_nz;
522 has_ac[i] = has_nz > 0;
523 }
524 for i in 20..24 {
525 let bx = i & 1;
526 let by = (i >> 1) & 1;
527 let pred = &self.pcache.v_pred;
528 let pidx = pred.xpos + mb_x * 2 + bx + by * pred.stride;
529 let pctx = self.pcache.v_pred_left[by] + pred.data[pidx - pred.stride];
530
531 let has_nz = decode_subblock(bc, &mut self.coeffs[i], 2, pctx, &sbparams);
532 self.pcache.v_pred.data[pidx] = has_nz;
533 self.pcache.v_pred_left[by] = has_nz;
534 has_ac[i] = has_nz > 0;
535 }
536
537 if self.dstate.has_y2 {
538 let y2block = &mut self.coeffs[24];
539 if self.mb_info[mb_idx].mb_type != VPMBType::Intra {
540 let mut dc = y2block[0];
541 let pval = self.dstate.pdc_pred_val;
542 if self.dstate.pdc_pred_count > 3 {
543 dc += pval;
544 y2block[0] = dc;
545 }
546 if (pval == 0) || (dc == 0) || ((pval ^ dc) < 0) {
547 self.dstate.pdc_pred_val = dc;
548 self.dstate.pdc_pred_count = 0;
549 } else if dc == pval {
550 self.dstate.pdc_pred_count += 1;
551 }
552 }
553 if has_ac[24] {
554 idct4x4(y2block);
555 } else {
556 idct4x4_dc(y2block);
557 }
558 for i in 0..16 {
559 self.coeffs[i][0] = self.coeffs[24][i];
560 }
561 }
562 for i in 0..24 {
563 if has_ac[i] {
564 idct4x4(&mut self.coeffs[i]);
565 } else {
566 idct4x4_dc(&mut self.coeffs[i]);
567 }
568 }
569 }
570
571 fn set_qmat(&mut self, y_dc_q: usize, y_ac_q: usize, y2_dc_q: usize, y2_ac_q: usize, uv_dc_q: usize, uv_ac_q: usize) {
572 self.qmat[0][0][0] = Y_DC_QUANTS[y_dc_q];
573 for i in 1..16 {
574 self.qmat[0][0][i] = Y_AC_QUANTS[y_ac_q];
575 }
576 self.qmat[0][1][0] = UV_DC_QUANTS[uv_dc_q];
577 for i in 1..16 {
578 self.qmat[0][1][i] = UV_AC_QUANTS[uv_ac_q];
579 }
580 self.qmat[0][2][0] = Y2_DC_QUANTS[y2_dc_q];
581 for i in 1..16 {
582 self.qmat[0][2][i] = Y2_AC_QUANTS[y2_ac_q];
583 }
584 if let Some(ref feat) = self.dstate.features[0] {
585 for j in 0..4 {
586 let q = feat.def_val[j] as usize;
587 self.qmat[j + 1][0][0] = Y_DC_QUANTS[q];
588 for i in 1..16 {
589 self.qmat[j + 1][0][i] = Y_AC_QUANTS[q];
590 }
591 self.qmat[j + 1][1][0] = UV_DC_QUANTS[q];
592 for i in 1..16 {
593 self.qmat[j + 1][1][i] = UV_AC_QUANTS[q];
594 }
595 self.qmat[j + 1][2][0] = Y2_DC_QUANTS[q];
596 for i in 1..16 {
597 self.qmat[j + 1][2][i] = Y2_AC_QUANTS[q];
598 }
599 }
600 }
601 }
602 fn fill_ymode(&mut self, mb_x: usize, mb_y: usize, ymode: PredMode) {
603 let mut iidx = mb_x * 4 + mb_y * 4 * self.ymode_stride;
604 for _ in 0..4 {
605 for x in 0..4 {
606 self.ymodes[iidx + x] = ymode;
607 }
608 iidx += self.ymode_stride;
609 }
610 }
611 fn fill_mv(&mut self, mb_x: usize, mb_y: usize, mv: MV) {
612 let mut iidx = mb_x * 4 + mb_y * 4 * self.mv_stride;
613 for _ in 0..4 {
614 for x in 0..4 {
615 self.mvs[iidx + x] = mv;
616 }
617 iidx += self.mb_w * 4;
618 }
619 }
620 fn find_mv_pred(&self, mb_x: usize, mb_y: usize) -> ([u8; 4], MV, MV, MV) {
621 const CAND_POS: [(i8, i8, u8, u8); 12] = [
622 (-1, 0, 8, 12), ( 0, -1, 8, 3),
623 (-1, -1, 2, 15), (-1, 1, 2, 12),
624 (-2, 0, 2, 12), ( 0, -2, 2, 3),
625 (-1, -2, 1, 15), (-2, -1, 1, 15),
626 (-2, 1, 1, 12), (-1, 2, 1, 12),
627 (-2, -2, 1, 15), (-2, 2, 1, 12)
628 ];
629
630 let mut nearest_mv = ZERO_MV;
631 let mut near_mv = ZERO_MV;
632
633 let mut ct: [u8; 4] = [0; 4];
634
635 let start = if self.dstate.version == 0 { 1 } else { 0 };
636 let mvwrap = (self.mb_w as isize) + 1;
637 for (yoff, xoff, weight, blk_no) in CAND_POS.iter() {
638 let cx = (mb_x as isize) + (*xoff as isize);
639 let cy = (mb_y as isize) + (*yoff as isize);
640 let mvpos = cx + cy * mvwrap;
641 if (mvpos < start) || ((mvpos % mvwrap) == (mvwrap - 1)) {
642 ct[0] += weight;
643 continue;
644 }
645 let cx = (mvpos % mvwrap) as usize;
646 let cy = (mvpos / mvwrap) as usize;
647 let bx = (*blk_no as usize) & 3;
648 let by = (*blk_no as usize) >> 2;
649 let blk_pos = cx * 4 + bx + (cy * 4 + by) * self.mv_stride;
650 let mv = self.mvs[blk_pos];
651 if mv == ZERO_MV {
652 ct[0] += weight;
653 continue;
654 }
655 let idx;
656 if (nearest_mv == ZERO_MV) || (nearest_mv == mv) {
657 nearest_mv = mv;
658 idx = 1;
659 } else if near_mv == ZERO_MV {
660 near_mv = mv;
661 idx = 2;
662 } else {
663 idx = if mv == near_mv { 2 } else { 3 };
664 }
665 ct[idx] += weight;
666 }
667 let pred_mv = if ct[1] > ct[2] {
668 if ct[1] >= ct[0] { nearest_mv } else { ZERO_MV }
669 } else {
670 if ct[2] >= ct[0] { near_mv } else { ZERO_MV }
671 };
672
673 let mvprobs = [INTER_MODE_PROBS[ct[0] as usize][0],
674 INTER_MODE_PROBS[ct[1] as usize][1],
675 INTER_MODE_PROBS[ct[2] as usize][2],
676 INTER_MODE_PROBS[ct[2] as usize][3]];
677
678 (mvprobs, nearest_mv, near_mv, pred_mv)
679 }
680 fn get_split_mv(&self, bc: &mut BoolCoder, mb_x: usize, mb_y: usize, bx: usize, by: usize, pred_mv: MV) -> MV {
681 let mode = bc.read_tree(SUB_MV_REF_TREE, &SUB_MV_REF_PROBS);
682 let mvidx = mb_x * 4 + bx + (mb_y * 4 + by) * self.mv_stride;
683 match mode {
684 SubMVRef::Left => {
685 if (mb_x > 0) || (bx > 0) {
686 self.mvs[mvidx - 1]
687 } else {
688 ZERO_MV
689 }
690 },
691 SubMVRef::Above => {
692 if (mb_y > 0) || (by > 0) {
693 self.mvs[mvidx - self.mv_stride]
694 } else {
695 ZERO_MV
696 }
697 },
698 SubMVRef::Zero => ZERO_MV,
699 SubMVRef::New => {
700 let dmy = decode_mv_component(bc, &self.dstate.mv_probs[0]);
701 let dmx = decode_mv_component(bc, &self.dstate.mv_probs[1]);
702 pred_mv + MV{ x: dmx, y: dmy }
703 },
704 }
705 }
706 fn do_split_mv(&mut self, bc: &mut BoolCoder, mb_x: usize, mb_y: usize, pred_mv: MV) -> DecoderResult<()> {
707 let split_mode = bc.read_tree(MV_SPLIT_MODE_TREE, &MV_SPLIT_MODE_PROBS);
708 let mut mvidx = mb_x * 4 + mb_y * 4 * self.mv_stride;
709 match split_mode {
710 MVSplitMode::TopBottom => {
711 let top_mv = self.get_split_mv(bc, mb_x, mb_y, 0, 0, pred_mv);
712 for _ in 0..2 {
713 for x in 0..4 { self.mvs[mvidx + x] = top_mv; }
714 mvidx += self.mv_stride;
715 }
716 let bot_mv = self.get_split_mv(bc, mb_x, mb_y, 0, 2, pred_mv);
717 for _ in 2..4 {
718 for x in 0..4 { self.mvs[mvidx + x] = bot_mv; }
719 mvidx += self.mv_stride;
720 }
721 },
722 MVSplitMode::LeftRight => {
723 let left_mv = self.get_split_mv(bc, mb_x, mb_y, 0, 0, pred_mv);
724 self.mvs[mvidx + 1] = left_mv;
725 let right_mv = self.get_split_mv(bc, mb_x, mb_y, 2, 0, pred_mv);
726 for _ in 0..4 {
727 self.mvs[mvidx + 0] = left_mv;
728 self.mvs[mvidx + 1] = left_mv;
729 self.mvs[mvidx + 2] = right_mv;
730 self.mvs[mvidx + 3] = right_mv;
731 mvidx += self.mv_stride;
732 }
733 },
734 MVSplitMode::Quarters => {
735 for y in (0..4).step_by(2) {
736 for x in (0..4).step_by(2) {
737 self.mvs[mvidx + x] = self.get_split_mv(bc, mb_x, mb_y, x, y, pred_mv);
738 self.mvs[mvidx + x + 1] = self.mvs[mvidx + x];
739 }
740 for x in 0..4 {
741 self.mvs[mvidx + x + self.mv_stride] = self.mvs[mvidx + x];
742 }
743 mvidx += self.mv_stride * 2;
744 }
745 },
746 MVSplitMode::Sixteenths => {
747 for y in 0..4 {
748 for x in 0..4 {
749 self.mvs[mvidx + x] = self.get_split_mv(bc, mb_x, mb_y, x, y, pred_mv);
750 }
751 mvidx += self.mv_stride;
752 }
753 },
754 };
755 Ok(())
756 }
757
758 fn add_residue(&self, dframe: &mut NASimpleVideoFrame<u8>, mb_x: usize, mb_y: usize, do_luma: bool, pitch_mode: u8) {
759 if do_luma {
760 let ydst = &mut dframe.data[dframe.offset[0]..];
761 let ystride = dframe.stride[0];
762 let mut yoff = mb_x * 16 + mb_y * 16 * ystride;
763 match pitch_mode {
764 PITCH_MODE_NORMAL => {
765 for y in 0..4 {
766 for x in 0..4 {
767 add_coeffs4x4(ydst, yoff + x * 4, ystride, &self.coeffs[x + y * 4]);
768 }
769 yoff += 4 * ystride;
770 }
771 },
772 PITCH_MODE_FOUR => {
773 for y in 0..16 {
774 add_coeffs16x1(ydst, yoff, &self.coeffs[y]);
775 yoff += ystride;
776 }
777 },
778 PITCH_MODE_X2 => {
779 for y in 0..2 {
780 for x in 0..4 {
781 add_coeffs4x4(ydst, yoff + x * 4, ystride * 2, &self.coeffs[x + y * 4]);
782 }
783 yoff += 8 * ystride;
784 }
785 yoff -= 15 * ystride;
786 for y in 2..4 {
787 for x in 0..4 {
788 add_coeffs4x4(ydst, yoff + x * 4, ystride * 2, &self.coeffs[x + y * 4]);
789 }
790 yoff += 8 * ystride;
791 }
792 },
793 PITCH_MODE_X4 => {
794 for y in 0..4 {
795 for x in 0..4 {
796 add_coeffs4x4(ydst, yoff + x * 4, ystride * 4, &self.coeffs[x + y * 4]);
797 }
798 yoff += ystride;
799 }
800 },
801 _ => unreachable!(),
802 };
803 }
804 let dst = &mut dframe.data[0..];
805 let mut uoff = dframe.offset[1] + mb_x * 8 + mb_y * 8 * dframe.stride[1];
806 let ustride = dframe.stride[1];
807 let mut voff = dframe.offset[2] + mb_x * 8 + mb_y * 8 * dframe.stride[2];
808 let vstride = dframe.stride[2];
809 if (pitch_mode == PITCH_MODE_NORMAL) || (pitch_mode == PITCH_MODE_FOUR) {
810 for y in 0..2 {
811 for x in 0..2 {
812 add_coeffs4x4(dst, uoff + x * 4, ustride, &self.coeffs[16 + x + y * 2]);
813 add_coeffs4x4(dst, voff + x * 4, vstride, &self.coeffs[20 + x + y * 2]);
814 }
815 uoff += ustride * 4;
816 voff += vstride * 4;
817 }
818 } else {
819 for y in 0..2 {
820 for x in 0..2 {
821 add_coeffs4x4(dst, uoff + x * 4, ustride * 2, &self.coeffs[16 + x + y * 2]);
822 add_coeffs4x4(dst, voff + x * 4, vstride * 2, &self.coeffs[20 + x + y * 2]);
823 }
824 uoff += ustride;
825 voff += vstride;
826 }
827 }
828 }
829 fn recon_intra_mb(&mut self, dframe: &mut NASimpleVideoFrame<u8>, mb_x: usize, mb_y: usize) -> DecoderResult<()> {
830 let pitch = self.dstate.force_pitch.unwrap_or(0);
831 let pitch_mode = (pitch >> 3) & 3;
832
833 let mb_idx = mb_x + mb_y * self.mb_w;
834 let has_top = mb_y > 0;
835 let has_left = mb_x > 0;
836 let ydst = &mut dframe.data[dframe.offset[0]..];
837 let ystride = dframe.stride[0];
838 let mut yoff = mb_x * 16 + mb_y * 16 * ystride;
839 let ipred_ctx_y = &mut self.dstate.ipred_ctx_y;
840 ipred_ctx_y.has_top = has_top;
841 ipred_ctx_y.has_left = has_left;
842 let is_normal = self.mb_info[mb_idx].ymode != PredMode::BPred;
843 if is_normal {
844 ipred_ctx_y.fill(ydst, yoff, ystride, 16, 16);
845 match self.mb_info[mb_idx].ymode {
846 PredMode::DCPred => IPred16x16::ipred_dc(ydst, yoff, ystride, ipred_ctx_y),
847 PredMode::HPred => IPred16x16::ipred_h (ydst, yoff, ystride, ipred_ctx_y),
848 PredMode::VPred => IPred16x16::ipred_v (ydst, yoff, ystride, ipred_ctx_y),
849 PredMode::TMPred => IPred16x16::ipred_tm(ydst, yoff, ystride, ipred_ctx_y),
850 _ => unreachable!(),
851 };
852 } else {
853 validate!((pitch_mode == PITCH_MODE_NORMAL) || (pitch_mode == PITCH_MODE_X2));
854 let mut iidx = mb_x * 4 + mb_y * 4 * self.ymode_stride;
855 let mut tr_save = [0x80u8; 16];
856 if pitch_mode == PITCH_MODE_X2 {
857 // reorganise coefficient data for interlaced case
858 for y in (0..4).step_by(2) {
859 for x in 0..4 {
860 let mut tmpblock = [0i16; 16 * 2];
861 let eidx = x + y * 4;
862 let oidx = x + y * 4 + 4;
863 for i in 0..4 {
864 for j in 0..4 {
865 tmpblock[i * 8 + 0 + j] = self.coeffs[eidx][i * 4 + j];
866 tmpblock[i * 8 + 4 + j] = self.coeffs[oidx][i * 4 + j];
867 }
868 }
869 self.coeffs[eidx].copy_from_slice(&tmpblock[0..16]);
870 self.coeffs[oidx].copy_from_slice(&tmpblock[16..32]);
871 }
872 }
873 }
874 for y in 0..4 {
875 for x in 0..4 {
876 ipred_ctx_y.has_left = has_left || x > 0;
877 let bmode = self.ymodes[iidx + x];
878 let cur_yoff = yoff + x * 4;
879 let has_tr = has_top && ((x < 3) || ((y == 0) && (mb_y < self.mb_w - 1)));
880 let has_dl = ipred_ctx_y.has_left && (y < 3);
881 ipred_ctx_y.fill(ydst, cur_yoff, ystride,
882 if has_tr { 8 } else { 4 },
883 if has_dl { 8 } else { 4 });
884 if !has_tr {
885 for i in 0..4 {
886 ipred_ctx_y.top[i + 4] = tr_save[x * 4 + i];
887 }
888 } else {
889 for i in 0..4 {
890 tr_save[x * 4 + i] = ipred_ctx_y.top[i + 4];
891 }
892 }
893 match bmode {
894 PredMode::DCPred => IPred4x4::ipred_dc(ydst, cur_yoff, ystride, ipred_ctx_y),
895 PredMode::TMPred => IPred4x4::ipred_tm(ydst, cur_yoff, ystride, ipred_ctx_y),
896 PredMode::HPred => IPred4x4::ipred_he(ydst, cur_yoff, ystride, ipred_ctx_y),
897 PredMode::VPred => IPred4x4::ipred_ve(ydst, cur_yoff, ystride, ipred_ctx_y),
898 PredMode::LDPred => IPred4x4::ipred_ld(ydst, cur_yoff, ystride, ipred_ctx_y),
899 PredMode::RDPred => IPred4x4::ipred_rd(ydst, cur_yoff, ystride, ipred_ctx_y),
900 PredMode::VRPred => IPred4x4::ipred_vr(ydst, cur_yoff, ystride, ipred_ctx_y),
901 PredMode::VLPred => IPred4x4::ipred_vl(ydst, cur_yoff, ystride, ipred_ctx_y),
902 PredMode::HDPred => IPred4x4::ipred_hd(ydst, cur_yoff, ystride, ipred_ctx_y),
903 PredMode::HUPred => IPred4x4::ipred_hu(ydst, cur_yoff, ystride, ipred_ctx_y),
904 _ => unreachable!(),
905 };
906 add_coeffs4x4(ydst, cur_yoff, ystride, &self.coeffs[x + y * 4]);
907 }
908 ipred_ctx_y.has_top = true;
909 yoff += 4 * ystride;
910 iidx += self.ymode_stride;
911 }
912 }
913 let dst = &mut dframe.data[0..];
914 let uoff = dframe.offset[1] + mb_x * 8 + mb_y * 8 * dframe.stride[1];
915 let ustride = dframe.stride[1];
916 let voff = dframe.offset[2] + mb_x * 8 + mb_y * 8 * dframe.stride[2];
917 let vstride = dframe.stride[2];
918 let ipred_ctx_u = &mut self.dstate.ipred_ctx_u;
919 let ipred_ctx_v = &mut self.dstate.ipred_ctx_v;
920 ipred_ctx_u.has_top = has_top;
921 ipred_ctx_v.has_top = has_top;
922 ipred_ctx_u.has_left = has_left;
923 ipred_ctx_v.has_left = has_left;
924 ipred_ctx_u.fill(dst, uoff, ustride, 8, 8);
925 ipred_ctx_v.fill(dst, voff, vstride, 8, 8);
926 match self.mb_info[mb_idx].uvmode {
927 PredMode::DCPred => {
928 IPred8x8::ipred_dc(dst, uoff, ustride, ipred_ctx_u);
929 IPred8x8::ipred_dc(dst, voff, vstride, ipred_ctx_v);
930 },
931 PredMode::HPred => {
932 IPred8x8::ipred_h(dst, uoff, ustride, ipred_ctx_u);
933 IPred8x8::ipred_h(dst, voff, vstride, ipred_ctx_v);
934 },
935 PredMode::VPred => {
936 IPred8x8::ipred_v(dst, uoff, ustride, ipred_ctx_u);
937 IPred8x8::ipred_v(dst, voff, vstride, ipred_ctx_v);
938 },
939 PredMode::TMPred => {
940 IPred8x8::ipred_tm(dst, uoff, ustride, ipred_ctx_u);
941 IPred8x8::ipred_tm(dst, voff, vstride, ipred_ctx_v);
942 },
943 _ => unreachable!(),
944 };
945 self.add_residue(dframe, mb_x, mb_y, is_normal, pitch_mode);
946 Ok(())
947 }
948 fn recon_inter_mb(&mut self, dframe: &mut NASimpleVideoFrame<u8>, mb_x: usize, mb_y: usize, use_last: bool) {
949 let pitch = self.dstate.force_pitch.unwrap_or(0);
950 let pitch_dmode = (pitch >> 3) & 3;
951 let pitch_smode = pitch & 7;
952
953 let refframe = (if use_last { self.shuf.get_last() } else { self.shuf.get_golden() }).unwrap();
954 let single_mv = self.mb_info[mb_x + mb_y * self.mb_w].mb_type != VPMBType::InterFourMV;
955 let mut iidx = mb_x * 4 + mb_y * 4 * self.mv_stride;
956 let mut mc_buf = self.mc_buf.get_data_mut().unwrap();
957
958 let dst = &mut dframe.data[0..];
959 let ystride = dframe.stride[0];
960 let mut yoff = dframe.offset[0] + mb_x * 16 + mb_y * 16 * ystride;
961 if pitch_smode == 0 {
962 if single_mv {
963 mc_block16x16(dst, yoff, ystride, mb_x * 16, mb_y * 16,
964 self.mvs[iidx].x * 2, self.mvs[iidx].y * 2, refframe.clone(), 0, &mut mc_buf);
965 } else {
966 for y in 0..4 {
967 for x in 0..4 {
968 mc_block4x4(dst, yoff + x * 4, ystride, mb_x * 16 + x * 4, mb_y * 16 + y * 4,
969 self.mvs[iidx + x].x * 2, self.mvs[iidx + x].y * 2, refframe.clone(), 0, &mut mc_buf);
970 }
971 yoff += 4 * ystride;
972 iidx += self.mv_stride;
973 }
974 }
975 } else {
976 if single_mv {
977 mc_block_special(dst, yoff, ystride, mb_x * 16, mb_y * 16,
978 self.mvs[iidx].x * 2, self.mvs[iidx].y * 2,
979 refframe.clone(), 0, &mut mc_buf, 16, pitch_smode);
980 } else {
981 for y in 0..4 {
982 for x in 0..4 {
983 mc_block_special(dst, yoff + x * 4, ystride,
984 mb_x * 16 + x * 4, mb_y * 16 + y * 4,
985 self.mvs[iidx + x].x * 2, self.mvs[iidx + x].y * 2,
986 refframe.clone(), 0, &mut mc_buf, 4, pitch_smode);
987 }
988 yoff += 4 * ystride;
989 iidx += self.mv_stride;
990 }
991 }
992 }
993
994 let mut iidx = mb_x * 4 + mb_y * 4 * self.mv_stride;
995 let mut uoff = dframe.offset[1] + mb_x * 8 + mb_y * 8 * dframe.stride[1];
996 let ustride = dframe.stride[1];
997 let mut voff = dframe.offset[2] + mb_x * 8 + mb_y * 8 * dframe.stride[2];
998 let vstride = dframe.stride[2];
999 if single_mv {
1000 let chroma_mv = self.mvs[iidx];
1001
1002 if pitch_smode == 0 {
1003 mc_block8x8(dst, uoff, ustride, mb_x * 8, mb_y * 8, chroma_mv.x, chroma_mv.y, refframe.clone(), 1, &mut mc_buf);
1004 mc_block8x8(dst, voff, vstride, mb_x * 8, mb_y * 8, chroma_mv.x, chroma_mv.y, refframe.clone(), 2, &mut mc_buf);
1005 } else {
1006 mc_block_special(dst, uoff, ustride, mb_x * 8, mb_y * 8, chroma_mv.x, chroma_mv.y,
1007 refframe.clone(), 1, &mut mc_buf, 8, pitch_smode);
1008 mc_block_special(dst, voff, vstride, mb_x * 8, mb_y * 8, chroma_mv.x, chroma_mv.y,
1009 refframe.clone(), 2, &mut mc_buf, 8, pitch_smode);
1010 }
1011 } else {
1012 for y in 0..2 {
1013 for x in 0..2 {
1014 let mut chroma_mv = self.mvs[iidx] + self.mvs[iidx + 1]
1015 + self.mvs[iidx + self.mv_stride]
1016 + self.mvs[iidx + self.mv_stride + 1];
1017 chroma_mv.x /= 4;
1018 chroma_mv.y /= 4;
1019
1020 if pitch_smode == 0 {
1021 mc_block4x4(dst, uoff, ustride, mb_x * 8 + x * 4, mb_y * 8 + y * 4,
1022 chroma_mv.x, chroma_mv.y, refframe.clone(), 1, &mut mc_buf);
1023 mc_block4x4(dst, voff, vstride, mb_x * 8 + x * 4, mb_y * 8 + y * 4,
1024 chroma_mv.x, chroma_mv.y, refframe.clone(), 2, &mut mc_buf);
1025 } else {
1026 mc_block_special(dst, uoff, ustride, mb_x * 8 + x * 4, mb_y * 8 + y * 4,
1027 chroma_mv.x, chroma_mv.y, refframe.clone(), 1, &mut mc_buf,
1028 4, pitch_smode);
1029 mc_block_special(dst, voff, vstride, mb_x * 8 + x * 4, mb_y * 8 + y * 4,
1030 chroma_mv.x, chroma_mv.y, refframe.clone(), 2, &mut mc_buf,
1031 4, pitch_smode);
1032 }
1033 }
1034 uoff += ustride * 4;
1035 voff += vstride * 4;
1036 iidx += 2 * self.mv_stride;
1037 }
1038 }
1039 self.add_residue(dframe, mb_x, mb_y, true, pitch_dmode);
1040 }
1041 fn loop_filter_mb(&mut self, dframe: &mut NASimpleVideoFrame<u8>, mb_x: usize, mb_y: usize, loop_str: u8) {
1042 const HIGH_EDGE_VAR_THR: [[u8; 64]; 2] = [
1043 [
1044 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1045 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
1046 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
1047 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3
1048 ], [
1049 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1050 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1051 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2,
1052 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
1053 ]];
1054
1055 let edge_thr = (loop_str as i16) + 2;
1056 let luma_thr = loop_str as i16;
1057 let chroma_thr = (loop_str as i16) * 2;
1058 let inner_thr = if self.dstate.loop_sharpness == 0 {
1059 loop_str as i16
1060 } else {
1061 let bound1 = (9 - self.dstate.loop_sharpness) as i16;
1062 let shift = (self.dstate.loop_sharpness + 3) >> 2;
1063 ((loop_str as i16) >> shift).min(bound1)
1064 };
1065 let hev_thr = HIGH_EDGE_VAR_THR[if self.dstate.is_intra { 1 } else { 0 }][loop_str as usize] as i16;
1066
1067 let ystride = dframe.stride[0];
1068 let ustride = dframe.stride[1];
1069 let vstride = dframe.stride[2];
1070 let ypos = dframe.offset[0] + mb_x * 16 + mb_y * 16 * ystride;
1071 let upos = dframe.offset[1] + mb_x * 8 + mb_y * 8 * ustride;
1072 let vpos = dframe.offset[2] + mb_x * 8 + mb_y * 8 * vstride;
1073
1074 let (loop_edge, loop_inner) = if self.dstate.lf_simple {
1075 (simple_loop_filter as LoopFilterFunc, simple_loop_filter as LoopFilterFunc)
1076 } else {
1077 (normal_loop_filter_edge as LoopFilterFunc, normal_loop_filter_inner as LoopFilterFunc)
1078 };
1079
1080 if mb_x > 0 {
1081 loop_edge(dframe.data, ypos, 1, ystride, 16, edge_thr, inner_thr, hev_thr);
1082 loop_edge(dframe.data, upos, 1, ustride, 8, edge_thr, inner_thr, hev_thr);
1083 loop_edge(dframe.data, vpos, 1, vstride, 8, edge_thr, inner_thr, hev_thr);
1084 }
1085 if mb_y > 0 {
1086 loop_edge(dframe.data, ypos, ystride, 1, 16, edge_thr, inner_thr, hev_thr);
1087 loop_edge(dframe.data, upos, ustride, 1, 8, edge_thr, inner_thr, hev_thr);
1088 loop_edge(dframe.data, vpos, vstride, 1, 8, edge_thr, inner_thr, hev_thr);
1089 }
1090
1091 for y in 1..4 {
1092 loop_inner(dframe.data, ypos + y * 4 * ystride, ystride, 1, 16, luma_thr, inner_thr, hev_thr);
1093 }
1094 loop_inner(dframe.data, upos + 4 * ustride, ustride, 1, 8, chroma_thr, inner_thr, hev_thr);
1095 loop_inner(dframe.data, vpos + 4 * vstride, vstride, 1, 8, chroma_thr, inner_thr, hev_thr);
1096
1097 for x in 1..4 {
1098 loop_inner(dframe.data, ypos + x * 4, 1, ystride, 16, luma_thr, inner_thr, hev_thr);
1099 }
1100 loop_inner(dframe.data, upos + 4, 1, ustride, 8, chroma_thr, inner_thr, hev_thr);
1101 loop_inner(dframe.data, vpos + 4, 1, vstride, 8, chroma_thr, inner_thr, hev_thr);
1102 }
1103}
1104
1105impl NADecoder for VP7Decoder {
1106 fn init(&mut self, supp: &mut NADecoderSupport, info: NACodecInfoRef) -> DecoderResult<()> {
1107 if let NACodecTypeInfo::Video(vinfo) = info.get_properties() {
1108 let fmt = YUV420_FORMAT;
1109 let myvinfo = NAVideoInfo::new(vinfo.get_width(), vinfo.get_height(), false, fmt);
1110 let myinfo = NACodecTypeInfo::Video(myvinfo.clone());
1111 self.info = NACodecInfo::new_ref(info.get_name(), myinfo, info.get_extradata()).into_ref();
1112
1113 supp.pool_u8.set_dec_bufs(4);
1114 supp.pool_u8.prealloc_video(NAVideoInfo::new(myvinfo.get_width(), myvinfo.get_height(), false, vinfo.get_format()), 4)?;
1115 self.set_dimensions(myvinfo.get_width(), myvinfo.get_height());
1116 Ok(())
1117 } else {
1118 Err(DecoderError::InvalidData)
1119 }
1120 }
1121 fn decode(&mut self, supp: &mut NADecoderSupport, pkt: &NAPacket) -> DecoderResult<NAFrameRef> {
1122 let src = pkt.get_buffer();
1123
1124 validate!(src.len() > 4);
1125
1126 let frame_tag = read_u24le(src.as_slice())?;
1127 self.dstate.is_intra = (frame_tag & 1) == 0;
1128 self.dstate.version = ((frame_tag >> 1) & 7) as u8;
1129 let part2_off = (frame_tag >> 4) as usize;
1130 let part1_off = if self.dstate.version == 0 { 4 } else { 3 };
1131
1132 validate!(src.len() > part1_off + part2_off);
1133 let mut bc = BoolCoder::new(&src[part1_off..][..part2_off])?;
1134 let mut bc_main = BoolCoder::new(&src[part1_off + part2_off..])?;
1135 if self.dstate.is_intra {
1136 let width = bc.read_bits(12) as usize;
1137 let height = bc.read_bits(12) as usize;
1138 let _scalev = bc.read_bits(2);
1139 let _scaleh = bc.read_bits(2);
1140 validate!((width > 0) && (height > 0));
1141 self.set_dimensions(width, height);
1142
1143 self.dstate.reset();
1144 }
1145
1146 self.read_features(&mut bc)?;
1147
1148 let y_ac_q = bc.read_bits(7) as usize;
1149 let y_dc_q = if bc.read_bool() { bc.read_bits(7) as usize } else { y_ac_q };
1150 let y2_dc_q = if bc.read_bool() { bc.read_bits(7) as usize } else { y_ac_q };
1151 let y2_ac_q = if bc.read_bool() { bc.read_bits(7) as usize } else { y_ac_q };
1152 let uv_dc_q = if bc.read_bool() { bc.read_bits(7) as usize } else { y_ac_q };
1153 let uv_ac_q = if bc.read_bool() { bc.read_bits(7) as usize } else { y_ac_q };
1154 self.set_qmat(y_dc_q, y_ac_q, y2_dc_q, y2_ac_q, uv_dc_q, uv_ac_q);
1155
1156 let update_gf = if self.dstate.is_intra { true } else { bc.read_bool() };
1157
1158 let mut has_fading_feature = true;
1159 let mut keep_probs = true;
1160 if self.dstate.version != 0 {
1161 keep_probs = bc.read_bool();
1162 if self.dstate.is_intra {
1163 has_fading_feature = true;
1164 } else {
1165 has_fading_feature = bc.read_bool();
1166 }
1167 }
1168
1169 if has_fading_feature {
1170 self.dstate.fading = bc.read_bool();
1171 if self.dstate.fading {
1172 self.dstate.fade_alpha = bc.read_sbits(8) as u16;
1173 self.dstate.fade_beta = bc.read_sbits(8) as u16;
1174 if let Some(pframe) = self.shuf.get_last() {
1175 let mut fframe = supp.pool_u8.get_free().unwrap();
1176 let mut dframe = NASimpleVideoFrame::from_video_buf(&mut fframe).unwrap();
1177 fade_frame(pframe, &mut dframe, self.dstate.fade_alpha, self.dstate.fade_beta);
1178 self.shuf.add_frame(fframe);
1179 }
1180 }
1181 } else {
1182 self.dstate.fading = false;
1183 }
1184
1185 if self.dstate.version == 0 {
1186 self.dstate.lf_simple = bc.read_bool();
1187 }
1188
1189 if bc.read_bool() {
1190 for i in 1..16 {
1191 self.scan[i] = DEFAULT_SCAN_ORDER[bc.read_bits(4) as usize];
1192 }
1193 }
1194
1195 if self.dstate.version != 0 {
1196 self.dstate.lf_simple = bc.read_bool();
1197 } else {
1198 self.dstate.lf_simple = false;
1199 }
1200
1201 self.dstate.loop_filter_level = bc.read_bits(6) as u8;
1202 self.dstate.loop_sharpness = bc.read_bits(3) as u8;
1203
1204 self.read_dct_coef_prob_upd(&mut bc)?;
1205
1206 if !self.dstate.is_intra {
1207 self.dstate.prob_intra_pred = bc.read_byte();
1208 self.dstate.prob_last_pred = bc.read_byte();
1209 if bc.read_bool() {
1210 for i in 0..4 {
1211 self.dstate.kf_ymode_prob[i] = bc.read_byte();
1212 }
1213 }
1214 if bc.read_bool() {
1215 for i in 0..3 {
1216 self.dstate.kf_uvmode_prob[i] = bc.read_byte();
1217 }
1218 }
1219 self.read_mv_prob_upd(&mut bc)?;
1220 }
1221 if !keep_probs {
1222 self.tmp_scan.copy_from_slice(&self.scan);
1223 }
1224
1225 let vinfo = NAVideoInfo::new(self.width, self.height, false, YUV420_FORMAT);
1226 let ret = supp.pool_u8.get_free();
1227 if ret.is_none() {
1228 return Err(DecoderError::AllocError);
1229 }
1230 let mut buf = ret.unwrap();
1231 if buf.get_info() != vinfo {
1232 self.shuf.clear();
1233 supp.pool_u8.reset();
1234 supp.pool_u8.prealloc_video(vinfo, 4)?;
1235 let ret = supp.pool_u8.get_free();
1236 if ret.is_none() {
1237 return Err(DecoderError::AllocError);
1238 }
1239 buf = ret.unwrap();
1240 }
1241 let mut dframe = NASimpleVideoFrame::from_video_buf(&mut buf).unwrap();
1242
1243 let mut mb_idx = 0;
1244 self.pcache.reset();
1245 self.dstate.pdc_pred_val = 0;
1246 self.dstate.pdc_pred_count = 0;
1247 let mut use_last = true;
1248 for mb_y in 0..self.mb_h {
1249 for mb_x in 0..self.mb_w {
1250 self.decode_mb_features(&mut bc, mb_x, mb_y)?;
1251 self.dstate.has_y2 = true;
1252 if self.dstate.is_intra {
1253 let ymode = bc.read_tree(KF_Y_MODE_TREE, KF_Y_MODE_TREE_PROBS);
1254 if ymode == PredMode::BPred {
1255 self.dstate.has_y2 = false;
1256 let mut iidx = mb_x * 4 + mb_y * 4 * self.ymode_stride;
1257 for y in 0..4 {
1258 for x in 0..4 {
1259 let top_mode = if (y > 0) || (mb_y > 0) {
1260 self.ymodes[iidx + x - self.ymode_stride]
1261 } else {
1262 PredMode::DCPred
1263 };
1264 let left_mode = if (x > 0) || (mb_x > 0) {
1265 self.ymodes[iidx + x - 1]
1266 } else {
1267 PredMode::DCPred
1268 };
1269 let top_idx = top_mode.to_b_index();
1270 let left_idx = left_mode.to_b_index();
1271 let bmode = bc.read_tree(B_MODE_TREE, &KF_B_MODE_TREE_PROBS[top_idx][left_idx]);
1272 self.ymodes[iidx + x] = bmode;
1273 }
1274 iidx += self.ymode_stride;
1275 }
1276 } else {
1277 self.fill_ymode(mb_x, mb_y, ymode.to_b_mode());
1278 }
1279 let uvmode = bc.read_tree(UV_MODE_TREE, KF_UV_MODE_TREE_PROBS);
1280 self.mb_info[mb_idx].mb_type = VPMBType::Intra;
1281 self.mb_info[mb_idx].ymode = ymode;
1282 self.mb_info[mb_idx].uvmode = uvmode;
1283 } else if !bc.read_prob(self.dstate.prob_intra_pred) {
1284 let ymode = bc.read_tree(Y_MODE_TREE, &self.dstate.kf_ymode_prob);
1285 if ymode == PredMode::BPred {
1286 self.dstate.has_y2 = false;
1287 let mut iidx = mb_x * 4 + mb_y * 4 * self.ymode_stride;
1288 for _y in 0..4 {
1289 for x in 0..4 {
1290 let bmode = bc.read_tree(B_MODE_TREE, B_MODE_TREE_PROBS);
1291 self.ymodes[iidx + x] = bmode;
1292 }
1293 iidx += self.ymode_stride;
1294 }
1295 } else {
1296 self.fill_ymode(mb_x, mb_y, PredMode::Inter);
1297 }
1298 let uvmode = bc.read_tree(UV_MODE_TREE, &self.dstate.kf_uvmode_prob);
1299 self.mb_info[mb_idx].mb_type = VPMBType::Intra;
1300 self.mb_info[mb_idx].ymode = ymode;
1301 self.mb_info[mb_idx].uvmode = uvmode;
1302 self.fill_mv(mb_x, mb_y, ZERO_MV);
1303 } else {
1304 use_last = !bc.read_prob(self.dstate.prob_last_pred);
1305
1306 let (mvprobs, nearest_mv, near_mv, pred_mv) = self.find_mv_pred(mb_x, mb_y);
1307 let mbtype = bc.read_tree(MV_REF_TREE, &mvprobs);
1308
1309 match mbtype {
1310 VPMBType::InterNearest => {
1311 self.fill_mv(mb_x, mb_y, nearest_mv);
1312 },
1313 VPMBType::InterNear => {
1314 self.fill_mv(mb_x, mb_y, near_mv);
1315 },
1316 VPMBType::InterNoMV => {
1317 self.fill_mv(mb_x, mb_y, ZERO_MV);
1318 },
1319 VPMBType::InterMV => {
1320 let dmy = decode_mv_component(&mut bc, &self.dstate.mv_probs[0]);
1321 let dmx = decode_mv_component(&mut bc, &self.dstate.mv_probs[1]);
1322 let new_mv = pred_mv + MV{ x: dmx, y: dmy };
1323 self.fill_mv(mb_x, mb_y, new_mv);
1324 },
1325 VPMBType::InterFourMV => {
1326 self.do_split_mv(&mut bc, mb_x, mb_y, pred_mv)?;
1327 },
1328 _ => unreachable!(),
1329 };
1330
1331 self.fill_ymode(mb_x, mb_y, PredMode::Inter);
1332 self.mb_info[mb_idx].mb_type = mbtype;
1333 self.mb_info[mb_idx].ymode = PredMode::Inter;
1334 self.mb_info[mb_idx].uvmode = PredMode::Inter;
1335 }
1336 self.decode_residue(&mut bc_main, mb_x, mb_idx);
1337 match self.mb_info[mb_idx].mb_type {
1338 VPMBType::Intra => {
1339 self.recon_intra_mb(&mut dframe, mb_x, mb_y)?;
1340 },
1341 _ => {
1342 self.recon_inter_mb(&mut dframe, mb_x, mb_y, use_last);
1343 },
1344 }
1345 if let Some(loop_str) = self.dstate.force_loop_str {
1346 self.mb_info[mb_idx].loop_str = loop_str;
1347 } else {
1348 self.mb_info[mb_idx].loop_str = self.dstate.loop_filter_level;
1349 }
1350 self.mb_info[mb_idx].upd_gf = self.dstate.force_gf_update;
1351 mb_idx += 1;
1352 }
1353 self.pcache.update_row();
1354 }
1355 let mut mb_idx = 0;
1356 for mb_y in 0..self.mb_h {
1357 for mb_x in 0..self.mb_w {
1358 let loop_str = self.mb_info[mb_idx].loop_str;
1359 self.loop_filter_mb(&mut dframe, mb_x, mb_y, loop_str);
1360 mb_idx += 1;
1361 }
1362 }
1363 if !update_gf && self.dstate.features[2].is_some() {
1364 let gf = self.shuf.get_golden().unwrap();
1365 let mut new_gf = supp.pool_u8.get_copy(&gf).unwrap();
1366 let dframe = NASimpleVideoFrame::from_video_buf(&mut new_gf).unwrap();
1367 let mut mb_idx = 0;
1368 let mut mc_buf = self.mc_buf.get_data_mut().unwrap();
1369 for mb_y in 0..self.mb_h {
1370 for mb_x in 0..self.mb_w {
1371 if self.mb_info[mb_idx].upd_gf {
1372 mc_block16x16(dframe.data, dframe.offset[0] + mb_x * 16 + mb_y * 16 * dframe.stride[0], dframe.stride[0], mb_x * 16, mb_y * 16, 0, 0, buf.clone(), 0, &mut mc_buf);
1373 mc_block8x8(dframe.data, dframe.offset[1] + mb_x * 8 + mb_y * 8 * dframe.stride[1], dframe.stride[1], mb_x * 8, mb_y * 8, 0, 0, buf.clone(), 1, &mut mc_buf);
1374 mc_block8x8(dframe.data, dframe.offset[2] + mb_x * 8 + mb_y * 8 * dframe.stride[2], dframe.stride[2], mb_x * 8, mb_y * 8, 0, 0, buf.clone(), 2, &mut mc_buf);
1375 }
1376 mb_idx += 1;
1377 }
1378 }
1379 self.shuf.add_golden_frame(new_gf);
1380 }
1381
1382 if !keep_probs {
1383 self.scan.copy_from_slice(&self.tmp_scan);
1384 }
1385 if update_gf {
1386 self.shuf.add_golden_frame(buf.clone());
1387 }
1388 self.shuf.add_frame(buf.clone());
1389
1390 let mut frm = NAFrame::new_from_pkt(pkt, self.info.clone(), NABufferType::Video(buf));
1391 frm.set_keyframe(self.dstate.is_intra);
1392 frm.set_frame_type(if self.dstate.is_intra { FrameType::I } else { FrameType::P });
1393 Ok(frm.into_ref())
1394 }
1395}
1396
1397pub fn get_decoder() -> Box<NADecoder> {
1398 Box::new(VP7Decoder::new())
1399}
1400
1401#[cfg(test)]
1402mod test {
1403 use nihav_core::codecs::RegisteredDecoders;
1404 use nihav_core::demuxers::RegisteredDemuxers;
1405 use nihav_core::test::dec_video::*;
1406 use crate::codecs::duck_register_all_codecs;
1407 use nihav_commonfmt::demuxers::generic_register_all_demuxers;
1408
1409 #[test]
1410 fn test_vp7() {
1411 let mut dmx_reg = RegisteredDemuxers::new();
1412 generic_register_all_demuxers(&mut dmx_reg);
1413 let mut dec_reg = RegisteredDecoders::new();
1414 duck_register_all_codecs(&mut dec_reg);
1415
1416 //let file = "assets/Duck/potter-40.vp7";
1417 //let file = "assets/Duck/potter-500.vp7";
1418 //let file = "assets/Duck/starsky-700.vp7";
1419 //let file = "assets/Duck/taking-700.vp7";
1420 //let file = "assets/Duck/troy-700.vp7";
1421 let file = "assets/Duck/interlaced_blit_pitch.avi";
1422 //let file = "assets/Duck/vp7.avi";
1423 test_file_decoding("avi", file, Some(12), true, false, None/*Some("vp7")*/, &dmx_reg, &dec_reg);
1424 }
1425}
1426
1427/*const DEFAULT_ZIGZAG: [usize; 16] = [
1428 0, 1, 5, 6,
1429 2, 4, 7, 12,
1430 3, 8, 11, 13,
1431 9, 10, 14, 15
1432];*/
1433const DEFAULT_SCAN_ORDER: [usize; 16] = [
1434 0, 1, 4, 8,
1435 5, 2, 3, 6,
1436 9, 12, 13, 10,
1437 7, 11, 14, 15
1438];
1439
1440const Y_MODE_TREE: &[VPTreeDef<PredMode>] = &[
1441 VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Index(2),
1442 VPTreeDef::Index(4), VPTreeDef::Index(6),
1443 VPTreeDef::Value(PredMode::VPred), VPTreeDef::Value(PredMode::HPred),
1444 VPTreeDef::Value(PredMode::TMPred), VPTreeDef::Value(PredMode::BPred),
1445];
1446const KF_Y_MODE_TREE: &[VPTreeDef<PredMode>] = &[
1447 VPTreeDef::Value(PredMode::BPred), VPTreeDef::Index(2),
1448 VPTreeDef::Index(4), VPTreeDef::Index(6),
1449 VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Value(PredMode::VPred),
1450 VPTreeDef::Value(PredMode::HPred), VPTreeDef::Value(PredMode::TMPred),
1451];
1452const UV_MODE_TREE: &[VPTreeDef<PredMode>] = &[
1453 VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Index(2),
1454 VPTreeDef::Value(PredMode::VPred), VPTreeDef::Index(4),
1455 VPTreeDef::Value(PredMode::HPred), VPTreeDef::Value(PredMode::TMPred)
1456];
1457const B_MODE_TREE: &[VPTreeDef<PredMode>] = &[
1458 VPTreeDef::Value(PredMode::DCPred), VPTreeDef::Index(2),
1459 VPTreeDef::Value(PredMode::TMPred), VPTreeDef::Index(4),
1460 VPTreeDef::Value(PredMode::VPred), VPTreeDef::Index(6),
1461 VPTreeDef::Index(8), VPTreeDef::Index(12),
1462 VPTreeDef::Value(PredMode::HPred), VPTreeDef::Index(10),
1463 VPTreeDef::Value(PredMode::RDPred), VPTreeDef::Value(PredMode::VRPred),
1464 VPTreeDef::Value(PredMode::LDPred), VPTreeDef::Index(14),
1465 VPTreeDef::Value(PredMode::VLPred), VPTreeDef::Index(16),
1466 VPTreeDef::Value(PredMode::HDPred), VPTreeDef::Value(PredMode::HUPred)
1467];
1468
1469const FEATURE_TREE: &[VPTreeDef<usize>] = &[
1470 VPTreeDef::Index(2), VPTreeDef::Index(4),
1471 VPTreeDef::Value(0), VPTreeDef::Value(1),
1472 VPTreeDef::Value(2), VPTreeDef::Value(3)
1473];
1474
1475const COEF_TREE: &[VPTreeDef<DCTToken>] = &[
1476 VPTreeDef::Value(DCTToken::EOB), VPTreeDef::Index(2),
1477 VPTreeDef::Value(DCTToken::Zero), VPTreeDef::Index(4),
1478 VPTreeDef::Value(DCTToken::One), VPTreeDef::Index(6),
1479 VPTreeDef::Index(8), VPTreeDef::Index(12),
1480 VPTreeDef::Value(DCTToken::Two), VPTreeDef::Index(10),
1481 VPTreeDef::Value(DCTToken::Three), VPTreeDef::Value(DCTToken::Four),
1482 VPTreeDef::Index(14), VPTreeDef::Index(16),
1483 VPTreeDef::Value(DCTToken::Cat1), VPTreeDef::Value(DCTToken::Cat2),
1484 VPTreeDef::Index(18), VPTreeDef::Index(20),
1485 VPTreeDef::Value(DCTToken::Cat3), VPTreeDef::Value(DCTToken::Cat4),
1486 VPTreeDef::Value(DCTToken::Cat5), VPTreeDef::Value(DCTToken::Cat6)
1487];
1488
1489const MV_REF_TREE: &[VPTreeDef<VPMBType>] = &[
1490 VPTreeDef::Value(VPMBType::InterNoMV), VPTreeDef::Index(2),
1491 VPTreeDef::Value(VPMBType::InterNearest), VPTreeDef::Index(4),
1492 VPTreeDef::Value(VPMBType::InterNear), VPTreeDef::Index(6),
1493 VPTreeDef::Value(VPMBType::InterMV), VPTreeDef::Value(VPMBType::InterFourMV)
1494];
1495const SMALL_MV_TREE: &[VPTreeDef<i16>] = &[
1496 VPTreeDef::Index(2), VPTreeDef::Index(8),
1497 VPTreeDef::Index(4), VPTreeDef::Index(6),
1498 VPTreeDef::Value(0), VPTreeDef::Value(1),
1499 VPTreeDef::Value(2), VPTreeDef::Value(3),
1500 VPTreeDef::Index(10), VPTreeDef::Index(12),
1501 VPTreeDef::Value(4), VPTreeDef::Value(5),
1502 VPTreeDef::Value(6), VPTreeDef::Value(7)
1503];
1504const MV_SPLIT_MODE_TREE: &[VPTreeDef<MVSplitMode>] = &[
1505 VPTreeDef::Value(MVSplitMode::Sixteenths), VPTreeDef::Index(2),
1506 VPTreeDef::Value(MVSplitMode::Quarters), VPTreeDef::Index(4),
1507 VPTreeDef::Value(MVSplitMode::TopBottom), VPTreeDef::Value(MVSplitMode::LeftRight)
1508];
1509const SUB_MV_REF_TREE: &[VPTreeDef<SubMVRef>] = &[
1510 VPTreeDef::Value(SubMVRef::Left), VPTreeDef::Index(2),
1511 VPTreeDef::Value(SubMVRef::Above), VPTreeDef::Index(4),
1512 VPTreeDef::Value(SubMVRef::Zero), VPTreeDef::Value(SubMVRef::New)
1513];
NihAV is a research multimedia framework