decodetxb.c 19.2 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12
/*
 * Copyright (c) 2017, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 2 Clause License and
 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
 * was not distributed with this source code in the LICENSE file, you can
 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
 * Media Patent License 1.0 was not distributed with this source code in the
 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
 */

#include "av1/common/scan.h"
Angie Chiang's avatar
Angie Chiang committed
13
#include "av1/common/idct.h"
14
#include "av1/common/txb_common.h"
15
#include "av1/decoder/decodemv.h"
16
#include "av1/decoder/decodetxb.h"
17
#include "av1/decoder/dsubexp.h"
18 19 20

#define ACCT_STR __func__

21
static int read_golomb(MACROBLOCKD *xd, aom_reader *r) {
22 23 24 25 26 27 28
  int x = 1;
  int length = 0;
  int i = 0;

  while (!i) {
    i = aom_read_bit(r, ACCT_STR);
    ++length;
29 30 31 32 33
    if (length >= 32) {
      aom_internal_error(xd->error_info, AOM_CODEC_CORRUPT_FRAME,
                         "Invalid length in read_golomb");
      break;
    }
34 35 36 37 38 39 40 41 42 43
  }

  for (i = 0; i < length - 1; ++i) {
    x <<= 1;
    x += aom_read_bit(r, ACCT_STR);
  }

  return x - 1;
}

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
static INLINE int read_nz_map(aom_reader *r, tran_low_t *tcoeffs, int plane,
                              const int16_t *scan, TX_SIZE tx_size,
                              TX_TYPE tx_type, FRAME_CONTEXT *fc,
                              FRAME_COUNTS *counts) {
  TX_SIZE txs_ctx = get_txsize_context(tx_size);
  const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
  const int height = tx_size_high[tx_size];
#if CONFIG_CTX1D
  const int width = tx_size_wide[tx_size];
  const int eob_offset = width + height;
  const TX_CLASS tx_class = get_tx_class(tx_type);
  const int seg_eob =
      (tx_class == TX_CLASS_2D) ? tx_size_2d[tx_size] : eob_offset;
#else
  const int seg_eob = tx_size_2d[tx_size];
#endif
  const PLANE_TYPE plane_type = get_plane_type(plane);
  unsigned int(*nz_map_count)[SIG_COEF_CONTEXTS][2] =
      (counts) ? &counts->nz_map[txs_ctx][plane_type] : NULL;
#if !LV_MAP_PROB
  aom_prob *nz_map = fc->nz_map[txs_ctx][plane_type];
  aom_prob *eob_flag = fc->eob_flag[txs_ctx][plane_type];
#endif
  int c;
  for (c = 0; c < seg_eob; ++c) {
    int is_nz;
    int coeff_ctx = get_nz_map_ctx(tcoeffs, scan[c], bwl, height, tx_type);
    int eob_ctx = get_eob_ctx(tcoeffs, scan[c], txs_ctx, tx_type);

    if (c < seg_eob - 1) {
#if LV_MAP_PROB
      is_nz = aom_read_symbol(r, fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx],
                              2, ACCT_STR);
#else
      is_nz = aom_read(r, nz_map[coeff_ctx], ACCT_STR);
#endif
    } else {
      is_nz = 1;
    }

    // set non-zero coefficient map.
    tcoeffs[scan[c]] = is_nz;

    if (c == seg_eob - 1) {
      ++c;
      break;
    }

    if (counts) ++(*nz_map_count)[coeff_ctx][is_nz];

    if (is_nz) {
#if LV_MAP_PROB
      int is_eob = aom_read_symbol(
          r, fc->eob_flag_cdf[txs_ctx][plane_type][eob_ctx], 2, ACCT_STR);
#else
      int is_eob = aom_read(r, eob_flag[eob_ctx], ACCT_STR);
#endif
      if (counts) ++counts->eob_flag[txs_ctx][plane_type][eob_ctx][is_eob];
      if (is_eob) break;
    }
  }
  return AOMMIN(seg_eob, c + 1);
}

#if CONFIG_CTX1D
static INLINE int read_nz_map_vert(aom_reader *r, tran_low_t *tcoeffs,
                                   int plane, const int16_t *iscan,
                                   TX_SIZE tx_size, TX_TYPE tx_type,
                                   FRAME_CONTEXT *fc, FRAME_COUNTS *counts) {
  const TX_SIZE txs_ctx = get_txsize_context(tx_size);
  const PLANE_TYPE plane_type = get_plane_type(plane);
  const TX_CLASS tx_class = get_tx_class(tx_type);
  const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
  const int width = tx_size_wide[tx_size];
  const int height = tx_size_high[tx_size];
  int16_t eob_ls[MAX_HVTX_SIZE];
  int eob = 0;
#if !LV_MAP_PROB
  aom_prob *nz_map = fc->nz_map[txs_ctx][plane_type];
#endif
  for (int col = 0; col < width; ++col) {
    int el_ctx = get_empty_line_ctx(col, eob_ls);
#if LV_MAP_PROB
    int empty_line = aom_read_symbol(
        r, fc->empty_line_cdf[txs_ctx][plane_type][tx_class][el_ctx], 2,
        ACCT_STR);
#else
    int empty_line = aom_read(
        r, fc->empty_line[txs_ctx][plane_type][tx_class][el_ctx], ACCT_STR);
#endif
    if (counts)
      ++counts->empty_line[txs_ctx][plane_type][tx_class][el_ctx][empty_line];
    if (!empty_line) {
      int row;
      for (row = 0; row < height; ++row) {
        int coeff_idx = row * width + col;
        int coeff_ctx =
            get_nz_map_ctx(tcoeffs, coeff_idx, bwl, height, tx_type);
        if (row + 1 != height) {
#if LV_MAP_PROB
          int is_nz = aom_read_symbol(
              r, fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], 2, ACCT_STR);
#else
          int is_nz = aom_read(r, nz_map[coeff_ctx], ACCT_STR);
#endif
          if (counts) ++counts->nz_map[txs_ctx][plane_type][coeff_ctx][is_nz];
          tcoeffs[coeff_idx] = is_nz;
          if (is_nz) {
            eob = AOMMAX(eob, iscan[coeff_idx] + 1);
            if (row + 1 != height) {
              int eob_ctx = get_hv_eob_ctx(col, row, eob_ls);
#if LV_MAP_PROB
              int is_eob = aom_read_symbol(
                  r, fc->hv_eob_cdf[txs_ctx][plane_type][tx_class][eob_ctx], 2,
                  ACCT_STR);
#else
              int is_eob = aom_read(
                  r, fc->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx],
                  ACCT_STR);
#endif
              if (counts)
                ++counts
                      ->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx][is_eob];
              if (is_eob) break;
            }
          }
        } else {
          tcoeffs[coeff_idx] = 1;
          eob = AOMMAX(eob, iscan[coeff_idx] + 1);
        }
      }
      eob_ls[col] = AOMMIN(height, row + 1);
    } else {
      eob_ls[col] = 0;
    }
  }
  return eob;
}

static INLINE int read_nz_map_horiz(aom_reader *r, tran_low_t *tcoeffs,
                                    int plane, const int16_t *iscan,
                                    TX_SIZE tx_size, TX_TYPE tx_type,
                                    FRAME_CONTEXT *fc, FRAME_COUNTS *counts) {
  const TX_SIZE txs_ctx = get_txsize_context(tx_size);
  const PLANE_TYPE plane_type = get_plane_type(plane);
  const TX_CLASS tx_class = get_tx_class(tx_type);
  const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
  const int width = tx_size_wide[tx_size];
  const int height = tx_size_high[tx_size];
  int16_t eob_ls[MAX_HVTX_SIZE];
  int eob = 0;
#if !LV_MAP_PROB
  aom_prob *nz_map = fc->nz_map[txs_ctx][plane_type];
#endif
  for (int row = 0; row < height; ++row) {
    int el_ctx = get_empty_line_ctx(row, eob_ls);
#if LV_MAP_PROB
    int empty_line = aom_read_symbol(
        r, fc->empty_line_cdf[txs_ctx][plane_type][tx_class][el_ctx], 2,
        ACCT_STR);
#else
    int empty_line = aom_read(
        r, fc->empty_line[txs_ctx][plane_type][tx_class][el_ctx], ACCT_STR);
#endif
    if (counts)
      ++counts->empty_line[txs_ctx][plane_type][tx_class][el_ctx][empty_line];
    if (!empty_line) {
      int col;
      for (col = 0; col < width; ++col) {
        int coeff_idx = row * width + col;
        int coeff_ctx =
            get_nz_map_ctx(tcoeffs, coeff_idx, bwl, height, tx_type);
        if (col + 1 != width) {
#if LV_MAP_PROB
          int is_nz = aom_read_symbol(
              r, fc->nz_map_cdf[txs_ctx][plane_type][coeff_ctx], 2, ACCT_STR);
#else
          int is_nz = aom_read(r, nz_map[coeff_ctx], ACCT_STR);
#endif
          if (counts) ++counts->nz_map[txs_ctx][plane_type][coeff_ctx][is_nz];
          tcoeffs[coeff_idx] = is_nz;
          if (is_nz) {
            eob = AOMMAX(eob, iscan[coeff_idx] + 1);
            int eob_ctx = get_hv_eob_ctx(row, col, eob_ls);
#if LV_MAP_PROB
            int is_eob = aom_read_symbol(
                r, fc->hv_eob_cdf[txs_ctx][plane_type][tx_class][eob_ctx], 2,
                ACCT_STR);
#else
            int is_eob =
                aom_read(r, fc->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx],
                         ACCT_STR);
#endif
            if (counts)
              ++counts->hv_eob[txs_ctx][plane_type][tx_class][eob_ctx][is_eob];
            if (is_eob) break;
          }
        } else {
          tcoeffs[coeff_idx] = 1;
          eob = AOMMAX(eob, iscan[coeff_idx] + 1);
        }
      }
      eob_ls[row] = AOMMIN(width, col + 1);
    } else {
      eob_ls[row] = 0;
    }
  }
  return eob;
}
#endif

255
uint8_t av1_read_coeffs_txb(const AV1_COMMON *const cm, MACROBLOCKD *xd,
Jingning Han's avatar
Jingning Han committed
256 257
                            aom_reader *r, int blk_row, int blk_col, int block,
                            int plane, tran_low_t *tcoeffs, TXB_CTX *txb_ctx,
Jingning Han's avatar
Jingning Han committed
258
                            TX_SIZE tx_size, int16_t *max_scan_line, int *eob) {
259
  FRAME_CONTEXT *ec_ctx = xd->tile_ctx;
260
  FRAME_COUNTS *counts = xd->counts;
261
  TX_SIZE txs_ctx = get_txsize_context(tx_size);
262
  PLANE_TYPE plane_type = get_plane_type(plane);
263
#if !LV_MAP_PROB
264 265
  aom_prob *nz_map = ec_ctx->nz_map[txs_ctx][plane_type];
  aom_prob *eob_flag = ec_ctx->eob_flag[txs_ctx][plane_type];
266
#endif
267
  MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
268
  const int seg_eob = tx_size_2d[tx_size];
269
  int c = 0;
270
  int update_eob = -1;
271
  const int16_t *const dequant = xd->plane[plane].seg_dequant[mbmi->segment_id];
272
  const int shift = av1_get_tx_scale(tx_size);
273
  const int bwl = b_width_log2_lookup[txsize_to_bsize[tx_size]] + 2;
274
  const int height = tx_size_high[tx_size];
275 276 277
  int cul_level = 0;
  memset(tcoeffs, 0, sizeof(*tcoeffs) * seg_eob);

278 279
#if LV_MAP_PROB
  int all_zero = aom_read_symbol(
280
      r, ec_ctx->txb_skip_cdf[txs_ctx][txb_ctx->txb_skip_ctx], 2, ACCT_STR);
281
#else
Angie Chiang's avatar
Angie Chiang committed
282
  int all_zero =
283
      aom_read(r, ec_ctx->txb_skip[txs_ctx][txb_ctx->txb_skip_ctx], ACCT_STR);
284
#endif
Angie Chiang's avatar
Angie Chiang committed
285
  if (xd->counts)
286
    ++xd->counts->txb_skip[txs_ctx][txb_ctx->txb_skip_ctx][all_zero];
Angie Chiang's avatar
Angie Chiang committed
287

288
  *eob = 0;
Angie Chiang's avatar
Angie Chiang committed
289 290
  if (all_zero) {
    *max_scan_line = 0;
291 292 293
#if CONFIG_TXK_SEL
    if (plane == 0) mbmi->txk_type[(blk_row << 4) + blk_col] = DCT_DCT;
#endif
Angie Chiang's avatar
Angie Chiang committed
294 295 296
    return 0;
  }

Jingning Han's avatar
Jingning Han committed
297 298
  (void)blk_row;
  (void)blk_col;
Angie Chiang's avatar
Angie Chiang committed
299
#if CONFIG_TXK_SEL
300 301
  av1_read_tx_type(cm, xd, blk_row, blk_col, block, plane,
                   get_min_tx_size(tx_size), r);
Angie Chiang's avatar
Angie Chiang committed
302
#endif
303 304
  const TX_TYPE tx_type =
      av1_get_tx_type(plane_type, xd, blk_row, blk_col, block, tx_size);
Angie Chiang's avatar
Angie Chiang committed
305
  const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
306
  const int16_t *scan = scan_order->scan;
Angie Chiang's avatar
Angie Chiang committed
307

308 309 310 311 312 313 314
#if CONFIG_CTX1D
  const int16_t *iscan = scan_order->iscan;
  TX_CLASS tx_class = get_tx_class(tx_type);
  if (tx_class == TX_CLASS_2D) {
    *eob =
        read_nz_map(r, tcoeffs, plane, scan, tx_size, tx_type, ec_ctx, counts);
  } else {
315
#if LV_MAP_PROB
316 317
    const int eob_mode = aom_read_symbol(
        r, ec_ctx->eob_mode_cdf[txs_ctx][plane_type][tx_class], 2, ACCT_STR);
318
#else
319 320
    const int eob_mode =
        aom_read(r, ec_ctx->eob_mode[txs_ctx][plane_type][tx_class], ACCT_STR);
321
#endif
322 323 324 325
    if (counts) ++counts->eob_mode[txs_ctx][plane_type][tx_class][eob_mode];
    if (eob_mode == 0) {
      *eob = read_nz_map(r, tcoeffs, plane, scan, tx_size, tx_type, ec_ctx,
                         counts);
326
    } else {
327 328 329 330 331 332 333
      assert(tx_class == TX_CLASS_VERT || tx_class == TX_CLASS_HORIZ);
      if (tx_class == TX_CLASS_VERT)
        *eob = read_nz_map_vert(r, tcoeffs, plane, iscan, tx_size, tx_type,
                                ec_ctx, counts);
      else
        *eob = read_nz_map_horiz(r, tcoeffs, plane, iscan, tx_size, tx_type,
                                 ec_ctx, counts);
334
    }
335
  }
336
#else
337
  *eob = read_nz_map(r, tcoeffs, plane, scan, tx_size, tx_type, ec_ctx, counts);
338
#endif
339
  *max_scan_line = *eob;
340 341 342

  int i;
  for (i = 0; i < NUM_BASE_LEVELS; ++i) {
343
#if !LV_MAP_PROB
344
    aom_prob *coeff_base = ec_ctx->coeff_base[txs_ctx][plane_type][i];
345
#endif
346
    update_eob = 0;
347
    for (c = *eob - 1; c >= 0; --c) {
348 349 350 351 352 353
      tran_low_t *v = &tcoeffs[scan[c]];
      int sign;
      int ctx;

      if (*v <= i) continue;

354
      ctx = get_base_ctx(tcoeffs, scan[c], bwl, height, i + 1);
355

356 357
#if LV_MAP_PROB
      if (aom_read_symbol(r,
358
                          ec_ctx->coeff_base_cdf[txs_ctx][plane_type][i][ctx],
359 360 361 362 363
                          2, ACCT_STR))
#else
      if (aom_read(r, coeff_base[ctx], ACCT_STR))
#endif
      {
364 365 366
        *v = i + 1;
        cul_level += i + 1;

367
        if (counts) ++counts->coeff_base[txs_ctx][plane_type][i][ctx][1];
368 369 370

        if (c == 0) {
          int dc_sign_ctx = txb_ctx->dc_sign_ctx;
371 372
#if LV_MAP_PROB
          sign = aom_read_symbol(
373
              r, ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], 2, ACCT_STR);
374
#else
375
          sign =
376
              aom_read(r, ec_ctx->dc_sign[plane_type][dc_sign_ctx], ACCT_STR);
377
#endif
378 379 380 381 382 383 384 385
          if (counts) ++counts->dc_sign[plane_type][dc_sign_ctx][sign];
        } else {
          sign = aom_read_bit(r, ACCT_STR);
        }
        if (sign) *v = -(*v);
        continue;
      }
      *v = i + 2;
386
      if (counts) ++counts->coeff_base[txs_ctx][plane_type][i][ctx][0];
387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402

      // update the eob flag for coefficients with magnitude above 1.
      update_eob = AOMMAX(update_eob, c);
    }
  }

  for (c = update_eob; c >= 0; --c) {
    tran_low_t *v = &tcoeffs[scan[c]];
    int sign;
    int idx;
    int ctx;

    if (*v <= NUM_BASE_LEVELS) continue;

    if (c == 0) {
      int dc_sign_ctx = txb_ctx->dc_sign_ctx;
403
#if LV_MAP_PROB
404
      sign = aom_read_symbol(r, ec_ctx->dc_sign_cdf[plane_type][dc_sign_ctx], 2,
405 406
                             ACCT_STR);
#else
407
      sign = aom_read(r, ec_ctx->dc_sign[plane_type][dc_sign_ctx], ACCT_STR);
408
#endif
409 410 411 412 413
      if (counts) ++counts->dc_sign[plane_type][dc_sign_ctx][sign];
    } else {
      sign = aom_read_bit(r, ACCT_STR);
    }

414
    ctx = get_br_ctx(tcoeffs, scan[c], bwl, height);
415

416
    if (ec_ctx->coeff_lps[txs_ctx][plane_type][ctx] == 0) exit(0);
417

418 419 420 421
#if BR_NODE
    for (idx = 0; idx < BASE_RANGE_SETS; ++idx) {
#if LV_MAP_PROB
      if (aom_read_symbol(r,
422
                          ec_ctx->coeff_br_cdf[txs_ctx][plane_type][idx][ctx],
423 424
                          2, ACCT_STR))
#else   // LV_MAP_PROB
425
      if (aom_read(r, ec_ctx->coeff_br[txs_ctx][plane_type][idx][ctx],
426 427 428 429 430 431 432
                   ACCT_STR))
#endif  // LV_MAP_PROB
      {
        int extra_bits = (1 << br_extra_bits[idx]) - 1;
        //        int br_offset = aom_read_literal(r, extra_bits, ACCT_STR);
        int br_offset = 0;
        int tok;
433
        if (counts) ++counts->coeff_br[txs_ctx][plane_type][idx][ctx][1];
434 435 436
        for (tok = 0; tok < extra_bits; ++tok) {
#if LV_MAP_PROB
          if (aom_read_symbol(r,
437
                              ec_ctx->coeff_lps_cdf[txs_ctx][plane_type][ctx],
438 439
                              2, ACCT_STR))
#else
440
          if (aom_read(r, ec_ctx->coeff_lps[txs_ctx][plane_type][ctx],
441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458
                       ACCT_STR))
#endif
          {
            br_offset = tok;
            if (counts) ++counts->coeff_lps[txs_ctx][plane_type][ctx][1];
            break;
          }
          if (counts) ++counts->coeff_lps[txs_ctx][plane_type][ctx][0];
        }
        if (tok == extra_bits) br_offset = extra_bits;

        int br_base = br_index_to_coeff[idx];

        *v = NUM_BASE_LEVELS + 1 + br_base + br_offset;
        cul_level += *v;
        if (sign) *v = -(*v);
        break;
      }
459
      if (counts) ++counts->coeff_br[txs_ctx][plane_type][idx][ctx][0];
460 461 462 463
    }

    if (idx < BASE_RANGE_SETS) continue;
#else
464
    for (idx = 0; idx < COEFF_BASE_RANGE; ++idx) {
465
#if LV_MAP_PROB
466
      if (aom_read_symbol(r, ec_ctx->coeff_lps_cdf[txs_ctx][plane_type][ctx], 2,
467 468
                          ACCT_STR))
#else
469
      if (aom_read(r, ec_ctx->coeff_lps[txs_ctx][plane_type][ctx], ACCT_STR))
470 471
#endif
      {
472 473 474 475
        *v = (idx + 1 + NUM_BASE_LEVELS);
        if (sign) *v = -(*v);
        cul_level += abs(*v);

476
        if (counts) ++counts->coeff_lps[txs_ctx][plane_type][ctx][1];
477 478
        break;
      }
479
      if (counts) ++counts->coeff_lps[txs_ctx][plane_type][ctx][0];
480 481
    }
    if (idx < COEFF_BASE_RANGE) continue;
482
#endif
483 484

    // decode 0-th order Golomb code
485
    *v = read_golomb(xd, r) + COEFF_BASE_RANGE + 1 + NUM_BASE_LEVELS;
486 487 488 489
    if (sign) *v = -(*v);
    cul_level += abs(*v);
  }

490
  for (c = 0; c < *eob; ++c) {
491 492 493 494 495 496 497 498 499 500 501 502 503 504
    int16_t dqv = (c == 0) ? dequant[0] : dequant[1];
    tran_low_t *v = &tcoeffs[scan[c]];
    int sign = (*v) < 0;
    *v = (abs(*v) * dqv) >> shift;
    if (sign) *v = -(*v);
  }

  cul_level = AOMMIN(63, cul_level);

  // DC value
  set_dc_sign(&cul_level, tcoeffs[0]);

  return cul_level;
}
Angie Chiang's avatar
Angie Chiang committed
505

506
uint8_t av1_read_coeffs_txb_facade(AV1_COMMON *cm, MACROBLOCKD *xd,
Angie Chiang's avatar
Angie Chiang committed
507 508
                                   aom_reader *r, int row, int col, int block,
                                   int plane, tran_low_t *tcoeffs,
Jingning Han's avatar
Jingning Han committed
509 510
                                   TX_SIZE tx_size, int16_t *max_scan_line,
                                   int *eob) {
Angie Chiang's avatar
Angie Chiang committed
511
  MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
512
  struct macroblockd_plane *pd = &xd->plane[plane];
Angie Chiang's avatar
Angie Chiang committed
513 514

  const BLOCK_SIZE bsize = mbmi->sb_type;
515
#if CONFIG_CHROMA_SUB8X8
Angie Chiang's avatar
Angie Chiang committed
516 517
  const BLOCK_SIZE plane_bsize =
      AOMMAX(BLOCK_4X4, get_plane_block_size(bsize, pd));
518 519
#elif CONFIG_CB4X4
  const BLOCK_SIZE plane_bsize = get_plane_block_size(bsize, pd);
Angie Chiang's avatar
Angie Chiang committed
520 521 522 523 524 525 526 527
#else   // CONFIG_CB4X4
  const BLOCK_SIZE plane_bsize =
      get_plane_block_size(AOMMAX(BLOCK_8X8, bsize), pd);
#endif  // CONFIG_CB4X4

  TXB_CTX txb_ctx;
  get_txb_ctx(plane_bsize, tx_size, plane, pd->above_context + col,
              pd->left_context + row, &txb_ctx);
Jingning Han's avatar
Jingning Han committed
528 529 530
  uint8_t cul_level =
      av1_read_coeffs_txb(cm, xd, r, row, col, block, plane, tcoeffs, &txb_ctx,
                          tx_size, max_scan_line, eob);
531 532
#if CONFIG_ADAPT_SCAN
  PLANE_TYPE plane_type = get_plane_type(plane);
533
  TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, row, col, block, tx_size);
534 535 536 537
  if (xd->counts && *eob > 0)
    av1_update_scan_count_facade(cm, xd->counts, tx_size, tx_type, pd->dqcoeff,
                                 *eob);
#endif
538 539
  av1_set_contexts(xd, pd, plane, tx_size, cul_level, col, row);
  return cul_level;
Angie Chiang's avatar
Angie Chiang committed
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

static void read_txb_probs(FRAME_CONTEXT *fc, const TX_SIZE tx_size,
                           aom_reader *r) {
  int plane, ctx, level;

  if (aom_read_bit(r, ACCT_STR) == 0) return;

  for (ctx = 0; ctx < TXB_SKIP_CONTEXTS; ++ctx)
    av1_diff_update_prob(r, &fc->txb_skip[tx_size][ctx], ACCT_STR);

  for (plane = 0; plane < PLANE_TYPES; ++plane)
    for (ctx = 0; ctx < SIG_COEF_CONTEXTS; ++ctx)
      av1_diff_update_prob(r, &fc->nz_map[tx_size][plane][ctx], ACCT_STR);

  for (plane = 0; plane < PLANE_TYPES; ++plane)
    for (ctx = 0; ctx < EOB_COEF_CONTEXTS; ++ctx)
      av1_diff_update_prob(r, &fc->eob_flag[tx_size][plane][ctx], ACCT_STR);

  for (level = 0; level < NUM_BASE_LEVELS; ++level)
    for (plane = 0; plane < PLANE_TYPES; ++plane)
      for (ctx = 0; ctx < COEFF_BASE_CONTEXTS; ++ctx)
        av1_diff_update_prob(r, &fc->coeff_base[tx_size][plane][level][ctx],
                             ACCT_STR);

  for (plane = 0; plane < PLANE_TYPES; ++plane)
    for (ctx = 0; ctx < LEVEL_CONTEXTS; ++ctx)
      av1_diff_update_prob(r, &fc->coeff_lps[tx_size][plane][ctx], ACCT_STR);
}

void av1_read_txb_probs(FRAME_CONTEXT *fc, TX_MODE tx_mode, aom_reader *r) {
  const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size[tx_mode];
  TX_SIZE tx_size;
  int ctx, plane;
574 575 576 577 578

#if LV_MAP_PROB
  return;
#endif

579 580 581 582 583 584 585
  for (plane = 0; plane < PLANE_TYPES; ++plane)
    for (ctx = 0; ctx < DC_SIGN_CONTEXTS; ++ctx)
      av1_diff_update_prob(r, &fc->dc_sign[plane][ctx], ACCT_STR);

  for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size)
    read_txb_probs(fc, tx_size, r);
}