1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
|
/*
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "./vp9_rtcd.h"
#include "./vpx_config.h"
#include "vpx_mem/vpx_mem.h"
#include "vp9/common/vp9_idct.h"
#include "vp9/common/vp9_reconinter.h"
#include "vp9/common/vp9_reconintra.h"
#include "vp9/common/vp9_systemdependent.h"
#include "vp9/encoder/vp9_dct.h"
#include "vp9/encoder/vp9_encodemb.h"
#include "vp9/encoder/vp9_quantize.h"
#include "vp9/encoder/vp9_rdopt.h"
#include "vp9/encoder/vp9_tokenize.h"
void vp9_subtract_block_c(int rows, int cols,
int16_t *diff_ptr, ptrdiff_t diff_stride,
const uint8_t *src_ptr, ptrdiff_t src_stride,
const uint8_t *pred_ptr, ptrdiff_t pred_stride) {
int r, c;
for (r = 0; r < rows; r++) {
for (c = 0; c < cols; c++)
diff_ptr[c] = src_ptr[c] - pred_ptr[c];
diff_ptr += diff_stride;
pred_ptr += pred_stride;
src_ptr += src_stride;
}
}
static void subtract_plane(MACROBLOCK *x, BLOCK_SIZE bsize, int plane) {
struct macroblock_plane *const p = &x->plane[plane];
const MACROBLOCKD *const xd = &x->e_mbd;
const struct macroblockd_plane *const pd = &xd->plane[plane];
const int bw = plane_block_width(bsize, pd);
const int bh = plane_block_height(bsize, pd);
vp9_subtract_block(bh, bw, p->src_diff, bw,
p->src.buf, p->src.stride,
pd->dst.buf, pd->dst.stride);
}
void vp9_subtract_sby(MACROBLOCK *x, BLOCK_SIZE bsize) {
subtract_plane(x, bsize, 0);
}
void vp9_subtract_sbuv(MACROBLOCK *x, BLOCK_SIZE bsize) {
int i;
for (i = 1; i < MAX_MB_PLANE; i++)
subtract_plane(x, bsize, i);
}
void vp9_subtract_sb(MACROBLOCK *x, BLOCK_SIZE bsize) {
vp9_subtract_sby(x, bsize);
vp9_subtract_sbuv(x, bsize);
}
#define RDTRUNC(RM, DM, R, D) ((128 + (R) * (RM)) & 0xFF)
typedef struct vp9_token_state vp9_token_state;
struct vp9_token_state {
int rate;
int error;
int next;
signed char token;
short qc;
};
// TODO(jimbankoski): experiment to find optimal RD numbers.
#define Y1_RD_MULT 4
#define UV_RD_MULT 2
static const int plane_rd_mult[4] = {
Y1_RD_MULT,
UV_RD_MULT,
};
#define UPDATE_RD_COST()\
{\
rd_cost0 = RDCOST(rdmult, rddiv, rate0, error0);\
rd_cost1 = RDCOST(rdmult, rddiv, rate1, error1);\
if (rd_cost0 == rd_cost1) {\
rd_cost0 = RDTRUNC(rdmult, rddiv, rate0, error0);\
rd_cost1 = RDTRUNC(rdmult, rddiv, rate1, error1);\
}\
}
// This function is a place holder for now but may ultimately need
// to scan previous tokens to work out the correct context.
static int trellis_get_coeff_context(const int16_t *scan,
const int16_t *nb,
int idx, int token,
uint8_t *token_cache) {
int bak = token_cache[scan[idx]], pt;
token_cache[scan[idx]] = vp9_pt_energy_class[token];
pt = get_coef_context(nb, token_cache, idx + 1);
token_cache[scan[idx]] = bak;
return pt;
}
static void optimize_b(MACROBLOCK *mb,
int plane, int block, BLOCK_SIZE plane_bsize,
ENTROPY_CONTEXT *a, ENTROPY_CONTEXT *l,
TX_SIZE tx_size) {
MACROBLOCKD *const xd = &mb->e_mbd;
struct macroblockd_plane *pd = &xd->plane[plane];
const int ref = is_inter_block(&xd->mi_8x8[0]->mbmi);
vp9_token_state tokens[1025][2];
unsigned best_index[1025][2];
const int16_t *coeff_ptr = BLOCK_OFFSET(mb->plane[plane].coeff, block);
int16_t *qcoeff_ptr;
int16_t *dqcoeff_ptr;
int eob = pd->eobs[block], final_eob, sz = 0;
const int i0 = 0;
int rc, x, next, i;
int64_t rdmult, rddiv, rd_cost0, rd_cost1;
int rate0, rate1, error0, error1, t0, t1;
int best, band, pt;
PLANE_TYPE type = pd->plane_type;
int err_mult = plane_rd_mult[type];
const int default_eob = 16 << (tx_size << 1);
const int16_t *scan, *nb;
const int mul = 1 + (tx_size == TX_32X32);
uint8_t token_cache[1024];
const int16_t *dequant_ptr = pd->dequant;
const uint8_t *const band_translate = get_band_translate(tx_size);
assert((!type && !plane) || (type && plane));
dqcoeff_ptr = BLOCK_OFFSET(pd->dqcoeff, block);
qcoeff_ptr = BLOCK_OFFSET(pd->qcoeff, block);
get_scan(xd, tx_size, type, block, &scan, &nb);
assert(eob <= default_eob);
/* Now set up a Viterbi trellis to evaluate alternative roundings. */
rdmult = mb->rdmult * err_mult;
if (mb->e_mbd.mi_8x8[0]->mbmi.ref_frame[0] == INTRA_FRAME)
rdmult = (rdmult * 9) >> 4;
rddiv = mb->rddiv;
/* Initialize the sentinel node of the trellis. */
tokens[eob][0].rate = 0;
tokens[eob][0].error = 0;
tokens[eob][0].next = default_eob;
tokens[eob][0].token = DCT_EOB_TOKEN;
tokens[eob][0].qc = 0;
*(tokens[eob] + 1) = *(tokens[eob] + 0);
next = eob;
for (i = 0; i < eob; i++)
token_cache[scan[i]] = vp9_pt_energy_class[vp9_dct_value_tokens_ptr[
qcoeff_ptr[scan[i]]].token];
for (i = eob; i-- > i0;) {
int base_bits, d2, dx;
rc = scan[i];
x = qcoeff_ptr[rc];
/* Only add a trellis state for non-zero coefficients. */
if (x) {
int shortcut = 0;
error0 = tokens[next][0].error;
error1 = tokens[next][1].error;
/* Evaluate the first possibility for this state. */
rate0 = tokens[next][0].rate;
rate1 = tokens[next][1].rate;
t0 = (vp9_dct_value_tokens_ptr + x)->token;
/* Consider both possible successor states. */
if (next < default_eob) {
band = band_translate[i + 1];
pt = trellis_get_coeff_context(scan, nb, i, t0, token_cache);
rate0 +=
mb->token_costs[tx_size][type][ref][band][0][pt]
[tokens[next][0].token];
rate1 +=
mb->token_costs[tx_size][type][ref][band][0][pt]
[tokens[next][1].token];
}
UPDATE_RD_COST();
/* And pick the best. */
best = rd_cost1 < rd_cost0;
base_bits = *(vp9_dct_value_cost_ptr + x);
dx = mul * (dqcoeff_ptr[rc] - coeff_ptr[rc]);
d2 = dx * dx;
tokens[i][0].rate = base_bits + (best ? rate1 : rate0);
tokens[i][0].error = d2 + (best ? error1 : error0);
tokens[i][0].next = next;
tokens[i][0].token = t0;
tokens[i][0].qc = x;
best_index[i][0] = best;
/* Evaluate the second possibility for this state. */
rate0 = tokens[next][0].rate;
rate1 = tokens[next][1].rate;
if ((abs(x)*dequant_ptr[rc != 0] > abs(coeff_ptr[rc]) * mul) &&
(abs(x)*dequant_ptr[rc != 0] < abs(coeff_ptr[rc]) * mul +
dequant_ptr[rc != 0]))
shortcut = 1;
else
shortcut = 0;
if (shortcut) {
sz = -(x < 0);
x -= 2 * sz + 1;
}
/* Consider both possible successor states. */
if (!x) {
/* If we reduced this coefficient to zero, check to see if
* we need to move the EOB back here.
*/
t0 = tokens[next][0].token == DCT_EOB_TOKEN ?
DCT_EOB_TOKEN : ZERO_TOKEN;
t1 = tokens[next][1].token == DCT_EOB_TOKEN ?
DCT_EOB_TOKEN : ZERO_TOKEN;
} else {
t0 = t1 = (vp9_dct_value_tokens_ptr + x)->token;
}
if (next < default_eob) {
band = band_translate[i + 1];
if (t0 != DCT_EOB_TOKEN) {
pt = trellis_get_coeff_context(scan, nb, i, t0, token_cache);
rate0 += mb->token_costs[tx_size][type][ref][band][!x][pt]
[tokens[next][0].token];
}
if (t1 != DCT_EOB_TOKEN) {
pt = trellis_get_coeff_context(scan, nb, i, t1, token_cache);
rate1 += mb->token_costs[tx_size][type][ref][band][!x][pt]
[tokens[next][1].token];
}
}
UPDATE_RD_COST();
/* And pick the best. */
best = rd_cost1 < rd_cost0;
base_bits = *(vp9_dct_value_cost_ptr + x);
if (shortcut) {
dx -= (dequant_ptr[rc != 0] + sz) ^ sz;
d2 = dx * dx;
}
tokens[i][1].rate = base_bits + (best ? rate1 : rate0);
tokens[i][1].error = d2 + (best ? error1 : error0);
tokens[i][1].next = next;
tokens[i][1].token = best ? t1 : t0;
tokens[i][1].qc = x;
best_index[i][1] = best;
/* Finally, make this the new head of the trellis. */
next = i;
} else {
/* There's no choice to make for a zero coefficient, so we don't
* add a new trellis node, but we do need to update the costs.
*/
band = band_translate[i + 1];
t0 = tokens[next][0].token;
t1 = tokens[next][1].token;
/* Update the cost of each path if we're past the EOB token. */
if (t0 != DCT_EOB_TOKEN) {
tokens[next][0].rate +=
mb->token_costs[tx_size][type][ref][band][1][0][t0];
tokens[next][0].token = ZERO_TOKEN;
}
if (t1 != DCT_EOB_TOKEN) {
tokens[next][1].rate +=
mb->token_costs[tx_size][type][ref][band][1][0][t1];
tokens[next][1].token = ZERO_TOKEN;
}
best_index[i][0] = best_index[i][1] = 0;
/* Don't update next, because we didn't add a new node. */
}
}
/* Now pick the best path through the whole trellis. */
band = band_translate[i + 1];
pt = combine_entropy_contexts(*a, *l);
rate0 = tokens[next][0].rate;
rate1 = tokens[next][1].rate;
error0 = tokens[next][0].error;
error1 = tokens[next][1].error;
t0 = tokens[next][0].token;
t1 = tokens[next][1].token;
rate0 += mb->token_costs[tx_size][type][ref][band][0][pt][t0];
rate1 += mb->token_costs[tx_size][type][ref][band][0][pt][t1];
UPDATE_RD_COST();
best = rd_cost1 < rd_cost0;
final_eob = i0 - 1;
vpx_memset(qcoeff_ptr, 0, sizeof(*qcoeff_ptr) * (16 << (tx_size * 2)));
vpx_memset(dqcoeff_ptr, 0, sizeof(*dqcoeff_ptr) * (16 << (tx_size * 2)));
for (i = next; i < eob; i = next) {
x = tokens[i][best].qc;
if (x) {
final_eob = i;
}
rc = scan[i];
qcoeff_ptr[rc] = x;
dqcoeff_ptr[rc] = (x * dequant_ptr[rc != 0]) / mul;
next = tokens[i][best].next;
best = best_index[i][best];
}
final_eob++;
xd->plane[plane].eobs[block] = final_eob;
*a = *l = (final_eob > 0);
}
void vp9_optimize_b(int plane, int block, BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, MACROBLOCK *mb, struct optimize_ctx *ctx) {
int x, y;
txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &x, &y);
optimize_b(mb, plane, block, plane_bsize,
&ctx->ta[plane][x], &ctx->tl[plane][y], tx_size);
}
static void optimize_init_b(int plane, BLOCK_SIZE bsize,
struct encode_b_args *args) {
const MACROBLOCKD *xd = &args->x->e_mbd;
const struct macroblockd_plane* const pd = &xd->plane[plane];
const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd);
const int num_4x4_w = num_4x4_blocks_wide_lookup[plane_bsize];
const int num_4x4_h = num_4x4_blocks_high_lookup[plane_bsize];
const MB_MODE_INFO *mbmi = &xd->mi_8x8[0]->mbmi;
const TX_SIZE tx_size = plane ? get_uv_tx_size(mbmi) : mbmi->tx_size;
vp9_get_entropy_contexts(tx_size, args->ctx->ta[plane], args->ctx->tl[plane],
pd->above_context, pd->left_context,
num_4x4_w, num_4x4_h);
}
void vp9_xform_quant(int plane, int block, BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, void *arg) {
struct encode_b_args* const args = arg;
MACROBLOCK* const x = args->x;
MACROBLOCKD* const xd = &x->e_mbd;
struct macroblock_plane *const p = &x->plane[plane];
struct macroblockd_plane *const pd = &xd->plane[plane];
int16_t *coeff = BLOCK_OFFSET(p->coeff, block);
int16_t *qcoeff = BLOCK_OFFSET(pd->qcoeff, block);
int16_t *dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
const int16_t *scan, *iscan;
uint16_t *eob = &pd->eobs[block];
const int bwl = b_width_log2(plane_bsize), bw = 1 << bwl;
const int twl = bwl - tx_size, twmask = (1 << twl) - 1;
int xoff, yoff;
int16_t *src_diff;
switch (tx_size) {
case TX_32X32:
scan = vp9_default_scan_32x32;
iscan = vp9_default_iscan_32x32;
block >>= 6;
xoff = 32 * (block & twmask);
yoff = 32 * (block >> twl);
src_diff = p->src_diff + 4 * bw * yoff + xoff;
if (x->use_lp32x32fdct)
vp9_fdct32x32_rd(src_diff, coeff, bw * 4);
else
vp9_fdct32x32(src_diff, coeff, bw * 4);
vp9_quantize_b_32x32(coeff, 1024, x->skip_block, p->zbin, p->round,
p->quant, p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
break;
case TX_16X16:
scan = vp9_default_scan_16x16;
iscan = vp9_default_iscan_16x16;
block >>= 4;
xoff = 16 * (block & twmask);
yoff = 16 * (block >> twl);
src_diff = p->src_diff + 4 * bw * yoff + xoff;
vp9_fdct16x16(src_diff, coeff, bw * 4);
vp9_quantize_b(coeff, 256, x->skip_block, p->zbin, p->round,
p->quant, p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
break;
case TX_8X8:
scan = vp9_default_scan_8x8;
iscan = vp9_default_iscan_8x8;
block >>= 2;
xoff = 8 * (block & twmask);
yoff = 8 * (block >> twl);
src_diff = p->src_diff + 4 * bw * yoff + xoff;
vp9_fdct8x8(src_diff, coeff, bw * 4);
vp9_quantize_b(coeff, 64, x->skip_block, p->zbin, p->round,
p->quant, p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
break;
case TX_4X4:
scan = vp9_default_scan_4x4;
iscan = vp9_default_iscan_4x4;
xoff = 4 * (block & twmask);
yoff = 4 * (block >> twl);
src_diff = p->src_diff + 4 * bw * yoff + xoff;
x->fwd_txm4x4(src_diff, coeff, bw * 4);
vp9_quantize_b(coeff, 16, x->skip_block, p->zbin, p->round,
p->quant, p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
break;
default:
assert(0);
}
}
static void encode_block(int plane, int block, BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, void *arg) {
struct encode_b_args *const args = arg;
MACROBLOCK *const x = args->x;
MACROBLOCKD *const xd = &x->e_mbd;
struct optimize_ctx *const ctx = args->ctx;
struct macroblockd_plane *const pd = &xd->plane[plane];
const int raster_block = txfrm_block_to_raster_block(plane_bsize, tx_size,
block);
int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
uint8_t *const dst = raster_block_offset_uint8(plane_bsize, raster_block,
pd->dst.buf, pd->dst.stride);
// TODO(jingning): per transformed block zero forcing only enabled for
// luma component. will integrate chroma components as well.
if (x->zcoeff_blk[tx_size][block] && plane == 0) {
int i, j;
pd->eobs[block] = 0;
txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &i, &j);
ctx->ta[plane][i] = 0;
ctx->tl[plane][j] = 0;
return;
}
if (!x->skip_recode)
vp9_xform_quant(plane, block, plane_bsize, tx_size, arg);
if (x->optimize && (!x->skip_recode || !x->skip_optimize)) {
vp9_optimize_b(plane, block, plane_bsize, tx_size, x, ctx);
} else {
int i, k;
txfrm_block_to_raster_xy(plane_bsize, tx_size, block, &i, &k);
ctx->ta[plane][i] = pd->eobs[block] > 0;
ctx->tl[plane][k] = pd->eobs[block] > 0;
}
if (x->skip_encode || pd->eobs[block] == 0)
return;
switch (tx_size) {
case TX_32X32:
vp9_idct32x32_add(dqcoeff, dst, pd->dst.stride, pd->eobs[block]);
break;
case TX_16X16:
vp9_idct16x16_add(dqcoeff, dst, pd->dst.stride, pd->eobs[block]);
break;
case TX_8X8:
vp9_idct8x8_add(dqcoeff, dst, pd->dst.stride, pd->eobs[block]);
break;
case TX_4X4:
// this is like vp9_short_idct4x4 but has a special case around eob<=1
// which is significant (not just an optimization) for the lossless
// case.
xd->itxm_add(dqcoeff, dst, pd->dst.stride, pd->eobs[block]);
break;
default:
assert(!"Invalid transform size");
}
}
static void encode_block_pass1(int plane, int block, BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, void *arg) {
struct encode_b_args *const args = arg;
MACROBLOCK *const x = args->x;
MACROBLOCKD *const xd = &x->e_mbd;
struct macroblockd_plane *const pd = &xd->plane[plane];
const int raster_block = txfrm_block_to_raster_block(plane_bsize, tx_size,
block);
int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
uint8_t *const dst = raster_block_offset_uint8(plane_bsize, raster_block,
pd->dst.buf, pd->dst.stride);
vp9_xform_quant(plane, block, plane_bsize, tx_size, arg);
if (pd->eobs[block] == 0)
return;
xd->itxm_add(dqcoeff, dst, pd->dst.stride, pd->eobs[block]);
}
void vp9_encode_sby(MACROBLOCK *x, BLOCK_SIZE bsize) {
MACROBLOCKD *const xd = &x->e_mbd;
struct optimize_ctx ctx;
struct encode_b_args arg = {x, &ctx};
vp9_subtract_sby(x, bsize);
if (x->optimize)
optimize_init_b(0, bsize, &arg);
foreach_transformed_block_in_plane(xd, bsize, 0, encode_block_pass1, &arg);
}
void vp9_encode_sb(MACROBLOCK *x, BLOCK_SIZE bsize) {
MACROBLOCKD *const xd = &x->e_mbd;
struct optimize_ctx ctx;
struct encode_b_args arg = {x, &ctx};
if (!x->skip_recode)
vp9_subtract_sb(x, bsize);
if (x->optimize && (!x->skip_recode || !x->skip_optimize)) {
int i;
for (i = 0; i < MAX_MB_PLANE; ++i)
optimize_init_b(i, bsize, &arg);
}
foreach_transformed_block(xd, bsize, encode_block, &arg);
}
void vp9_encode_block_intra(int plane, int block, BLOCK_SIZE plane_bsize,
TX_SIZE tx_size, void *arg) {
struct encode_b_args* const args = arg;
MACROBLOCK *const x = args->x;
MACROBLOCKD *const xd = &x->e_mbd;
MB_MODE_INFO *mbmi = &xd->mi_8x8[0]->mbmi;
struct macroblock_plane *const p = &x->plane[plane];
struct macroblockd_plane *const pd = &xd->plane[plane];
int16_t *coeff = BLOCK_OFFSET(p->coeff, block);
int16_t *qcoeff = BLOCK_OFFSET(pd->qcoeff, block);
int16_t *dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
const int16_t *scan, *iscan;
TX_TYPE tx_type;
MB_PREDICTION_MODE mode;
const int bwl = b_width_log2(plane_bsize), bw = 1 << bwl;
const int twl = bwl - tx_size, twmask = (1 << twl) - 1;
int xoff, yoff;
uint8_t *src, *dst;
int16_t *src_diff;
uint16_t *eob = &pd->eobs[block];
if (xd->mb_to_right_edge < 0 || xd->mb_to_bottom_edge < 0)
extend_for_intra(xd, plane_bsize, plane, block, tx_size);
// if (x->optimize)
// vp9_optimize_b(plane, block, plane_bsize, tx_size, x, args->ctx);
switch (tx_size) {
case TX_32X32:
scan = vp9_default_scan_32x32;
iscan = vp9_default_iscan_32x32;
mode = plane == 0 ? mbmi->mode : mbmi->uv_mode;
block >>= 6;
xoff = 32 * (block & twmask);
yoff = 32 * (block >> twl);
dst = pd->dst.buf + yoff * pd->dst.stride + xoff;
vp9_predict_intra_block(xd, block, bwl, TX_32X32, mode,
dst, pd->dst.stride, dst, pd->dst.stride);
if (!x->skip_recode) {
src = p->src.buf + yoff * p->src.stride + xoff;
src_diff = p->src_diff + 4 * bw * yoff + xoff;
vp9_subtract_block(32, 32, src_diff, bw * 4,
src, p->src.stride, dst, pd->dst.stride);
if (x->use_lp32x32fdct)
vp9_fdct32x32_rd(src_diff, coeff, bw * 4);
else
vp9_fdct32x32(src_diff, coeff, bw * 4);
vp9_quantize_b_32x32(coeff, 1024, x->skip_block, p->zbin, p->round,
p->quant, p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
}
if (!x->skip_encode && *eob)
vp9_idct32x32_add(dqcoeff, dst, pd->dst.stride, *eob);
break;
case TX_16X16:
tx_type = get_tx_type_16x16(pd->plane_type, xd);
scan = get_scan_16x16(tx_type);
iscan = get_iscan_16x16(tx_type);
mode = plane == 0 ? mbmi->mode : mbmi->uv_mode;
block >>= 4;
xoff = 16 * (block & twmask);
yoff = 16 * (block >> twl);
dst = pd->dst.buf + yoff * pd->dst.stride + xoff;
vp9_predict_intra_block(xd, block, bwl, TX_16X16, mode,
dst, pd->dst.stride, dst, pd->dst.stride);
if (!x->skip_recode) {
src = p->src.buf + yoff * p->src.stride + xoff;
src_diff = p->src_diff + 4 * bw * yoff + xoff;
vp9_subtract_block(16, 16, src_diff, bw * 4,
src, p->src.stride, dst, pd->dst.stride);
vp9_fht16x16(tx_type, src_diff, coeff, bw * 4);
vp9_quantize_b(coeff, 256, x->skip_block, p->zbin, p->round,
p->quant, p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
}
if (!x->skip_encode && *eob)
vp9_iht16x16_add(tx_type, dqcoeff, dst, pd->dst.stride, *eob);
break;
case TX_8X8:
tx_type = get_tx_type_8x8(pd->plane_type, xd);
scan = get_scan_8x8(tx_type);
iscan = get_iscan_8x8(tx_type);
mode = plane == 0 ? mbmi->mode : mbmi->uv_mode;
block >>= 2;
xoff = 8 * (block & twmask);
yoff = 8 * (block >> twl);
dst = pd->dst.buf + yoff * pd->dst.stride + xoff;
vp9_predict_intra_block(xd, block, bwl, TX_8X8, mode,
dst, pd->dst.stride, dst, pd->dst.stride);
if (!x->skip_recode) {
src = p->src.buf + yoff * p->src.stride + xoff;
src_diff = p->src_diff + 4 * bw * yoff + xoff;
vp9_subtract_block(8, 8, src_diff, bw * 4,
src, p->src.stride, dst, pd->dst.stride);
vp9_fht8x8(tx_type, src_diff, coeff, bw * 4);
vp9_quantize_b(coeff, 64, x->skip_block, p->zbin, p->round, p->quant,
p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
}
if (!x->skip_encode && *eob)
vp9_iht8x8_add(tx_type, dqcoeff, dst, pd->dst.stride, *eob);
break;
case TX_4X4:
tx_type = get_tx_type_4x4(pd->plane_type, xd, block);
scan = get_scan_4x4(tx_type);
iscan = get_iscan_4x4(tx_type);
if (mbmi->sb_type < BLOCK_8X8 && plane == 0)
mode = xd->mi_8x8[0]->bmi[block].as_mode;
else
mode = plane == 0 ? mbmi->mode : mbmi->uv_mode;
xoff = 4 * (block & twmask);
yoff = 4 * (block >> twl);
dst = pd->dst.buf + yoff * pd->dst.stride + xoff;
vp9_predict_intra_block(xd, block, bwl, TX_4X4, mode,
dst, pd->dst.stride, dst, pd->dst.stride);
if (!x->skip_recode) {
src = p->src.buf + yoff * p->src.stride + xoff;
src_diff = p->src_diff + 4 * bw * yoff + xoff;
vp9_subtract_block(4, 4, src_diff, bw * 4,
src, p->src.stride, dst, pd->dst.stride);
if (tx_type != DCT_DCT)
vp9_short_fht4x4(src_diff, coeff, bw * 4, tx_type);
else
x->fwd_txm4x4(src_diff, coeff, bw * 4);
vp9_quantize_b(coeff, 16, x->skip_block, p->zbin, p->round, p->quant,
p->quant_shift, qcoeff, dqcoeff,
pd->dequant, p->zbin_extra, eob, scan, iscan);
}
if (!x->skip_encode && *eob) {
if (tx_type == DCT_DCT)
// this is like vp9_short_idct4x4 but has a special case around eob<=1
// which is significant (not just an optimization) for the lossless
// case.
xd->itxm_add(dqcoeff, dst, pd->dst.stride, *eob);
else
vp9_iht4x4_16_add(dqcoeff, dst, pd->dst.stride, tx_type);
}
break;
default:
assert(0);
}
}
void vp9_encode_intra_block_y(MACROBLOCK *x, BLOCK_SIZE bsize) {
MACROBLOCKD* const xd = &x->e_mbd;
struct optimize_ctx ctx;
struct encode_b_args arg = {x, &ctx};
foreach_transformed_block_in_plane(xd, bsize, 0, vp9_encode_block_intra,
&arg);
}
void vp9_encode_intra_block_uv(MACROBLOCK *x, BLOCK_SIZE bsize) {
MACROBLOCKD* const xd = &x->e_mbd;
struct optimize_ctx ctx;
struct encode_b_args arg = {x, &ctx};
foreach_transformed_block_uv(xd, bsize, vp9_encode_block_intra, &arg);
}
|