decodeframe.c 85.9 KB
Newer Older
Jingning Han's avatar
Jingning Han committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
/*
 *  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 <assert.h>
#include <stdlib.h>  // qsort()

#include "./vp10_rtcd.h"
#include "./vpx_dsp_rtcd.h"
#include "./vpx_scale_rtcd.h"

#include "vpx_dsp/bitreader_buffer.h"
#include "vpx_dsp/bitreader.h"
20
#include "vpx_dsp/vpx_dsp_common.h"
Jingning Han's avatar
Jingning Han committed
21 22 23 24 25 26
#include "vpx_mem/vpx_mem.h"
#include "vpx_ports/mem.h"
#include "vpx_ports/mem_ops.h"
#include "vpx_scale/vpx_scale.h"
#include "vpx_util/vpx_thread.h"

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44
#include "vp10/common/alloccommon.h"
#include "vp10/common/common.h"
#include "vp10/common/entropy.h"
#include "vp10/common/entropymode.h"
#include "vp10/common/idct.h"
#include "vp10/common/thread_common.h"
#include "vp10/common/pred_common.h"
#include "vp10/common/quant_common.h"
#include "vp10/common/reconintra.h"
#include "vp10/common/reconinter.h"
#include "vp10/common/seg_common.h"
#include "vp10/common/tile_common.h"

#include "vp10/decoder/decodeframe.h"
#include "vp10/decoder/detokenize.h"
#include "vp10/decoder/decodemv.h"
#include "vp10/decoder/decoder.h"
#include "vp10/decoder/dsubexp.h"
Jingning Han's avatar
Jingning Han committed
45 46 47

#define MAX_VP9_HEADER_SIZE 80

Yaowu Xu's avatar
Yaowu Xu committed
48
static int is_compound_reference_allowed(const VP10_COMMON *cm) {
Jingning Han's avatar
Jingning Han committed
49 50 51 52 53 54 55 56
  int i;
  for (i = 1; i < REFS_PER_FRAME; ++i)
    if (cm->ref_frame_sign_bias[i + 1] != cm->ref_frame_sign_bias[1])
      return 1;

  return 0;
}

Yaowu Xu's avatar
Yaowu Xu committed
57
static void setup_compound_reference_mode(VP10_COMMON *cm) {
Jingning Han's avatar
Jingning Han committed
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
  if (cm->ref_frame_sign_bias[LAST_FRAME] ==
          cm->ref_frame_sign_bias[GOLDEN_FRAME]) {
    cm->comp_fixed_ref = ALTREF_FRAME;
    cm->comp_var_ref[0] = LAST_FRAME;
    cm->comp_var_ref[1] = GOLDEN_FRAME;
  } else if (cm->ref_frame_sign_bias[LAST_FRAME] ==
                 cm->ref_frame_sign_bias[ALTREF_FRAME]) {
    cm->comp_fixed_ref = GOLDEN_FRAME;
    cm->comp_var_ref[0] = LAST_FRAME;
    cm->comp_var_ref[1] = ALTREF_FRAME;
  } else {
    cm->comp_fixed_ref = LAST_FRAME;
    cm->comp_var_ref[0] = GOLDEN_FRAME;
    cm->comp_var_ref[1] = ALTREF_FRAME;
  }
}

static int read_is_valid(const uint8_t *start, size_t len, const uint8_t *end) {
  return len != 0 && len <= (size_t)(end - start);
}

static int decode_unsigned_max(struct vpx_read_bit_buffer *rb, int max) {
  const int data = vpx_rb_read_literal(rb, get_unsigned_bits(max));
  return data > max ? max : data;
}

84 85 86 87 88
#if CONFIG_MISC_FIXES
static TX_MODE read_tx_mode(struct vpx_read_bit_buffer *rb) {
  return vpx_rb_read_bit(rb) ? TX_MODE_SELECT : vpx_rb_read_literal(rb, 2);
}
#else
Jingning Han's avatar
Jingning Han committed
89 90 91 92 93 94
static TX_MODE read_tx_mode(vpx_reader *r) {
  TX_MODE tx_mode = vpx_read_literal(r, 2);
  if (tx_mode == ALLOW_32X32)
    tx_mode += vpx_read_bit(r);
  return tx_mode;
}
95
#endif
Jingning Han's avatar
Jingning Han committed
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

static void read_tx_mode_probs(struct tx_probs *tx_probs, vpx_reader *r) {
  int i, j;

  for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
    for (j = 0; j < TX_SIZES - 3; ++j)
      vp10_diff_update_prob(r, &tx_probs->p8x8[i][j]);

  for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
    for (j = 0; j < TX_SIZES - 2; ++j)
      vp10_diff_update_prob(r, &tx_probs->p16x16[i][j]);

  for (i = 0; i < TX_SIZE_CONTEXTS; ++i)
    for (j = 0; j < TX_SIZES - 1; ++j)
      vp10_diff_update_prob(r, &tx_probs->p32x32[i][j]);
}

static void read_switchable_interp_probs(FRAME_CONTEXT *fc, vpx_reader *r) {
  int i, j;
  for (j = 0; j < SWITCHABLE_FILTER_CONTEXTS; ++j)
    for (i = 0; i < SWITCHABLE_FILTERS - 1; ++i)
      vp10_diff_update_prob(r, &fc->switchable_interp_prob[j][i]);
}

static void read_inter_mode_probs(FRAME_CONTEXT *fc, vpx_reader *r) {
  int i, j;
  for (i = 0; i < INTER_MODE_CONTEXTS; ++i)
    for (j = 0; j < INTER_MODES - 1; ++j)
      vp10_diff_update_prob(r, &fc->inter_mode_probs[i][j]);
}

127 128 129 130 131 132 133 134 135 136 137 138
#if CONFIG_MISC_FIXES
static REFERENCE_MODE read_frame_reference_mode(const VP10_COMMON *cm,
    struct vpx_read_bit_buffer *rb) {
  if (is_compound_reference_allowed(cm)) {
    return vpx_rb_read_bit(rb) ? REFERENCE_MODE_SELECT
                               : (vpx_rb_read_bit(rb) ? COMPOUND_REFERENCE
                                                      : SINGLE_REFERENCE);
  } else {
    return SINGLE_REFERENCE;
  }
}
#else
Yaowu Xu's avatar
Yaowu Xu committed
139
static REFERENCE_MODE read_frame_reference_mode(const VP10_COMMON *cm,
Jingning Han's avatar
Jingning Han committed
140 141 142 143 144 145 146 147 148
                                                vpx_reader *r) {
  if (is_compound_reference_allowed(cm)) {
    return vpx_read_bit(r) ? (vpx_read_bit(r) ? REFERENCE_MODE_SELECT
                                              : COMPOUND_REFERENCE)
                           : SINGLE_REFERENCE;
  } else {
    return SINGLE_REFERENCE;
  }
}
149
#endif
Jingning Han's avatar
Jingning Han committed
150

Yaowu Xu's avatar
Yaowu Xu committed
151
static void read_frame_reference_mode_probs(VP10_COMMON *cm, vpx_reader *r) {
Jingning Han's avatar
Jingning Han committed
152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172
  FRAME_CONTEXT *const fc = cm->fc;
  int i;

  if (cm->reference_mode == REFERENCE_MODE_SELECT)
    for (i = 0; i < COMP_INTER_CONTEXTS; ++i)
      vp10_diff_update_prob(r, &fc->comp_inter_prob[i]);

  if (cm->reference_mode != COMPOUND_REFERENCE)
    for (i = 0; i < REF_CONTEXTS; ++i) {
      vp10_diff_update_prob(r, &fc->single_ref_prob[i][0]);
      vp10_diff_update_prob(r, &fc->single_ref_prob[i][1]);
    }

  if (cm->reference_mode != SINGLE_REFERENCE)
    for (i = 0; i < REF_CONTEXTS; ++i)
      vp10_diff_update_prob(r, &fc->comp_ref_prob[i]);
}

static void update_mv_probs(vpx_prob *p, int n, vpx_reader *r) {
  int i;
  for (i = 0; i < n; ++i)
173 174 175
#if CONFIG_MISC_FIXES
    vp10_diff_update_prob(r, &p[i]);
#else
Jingning Han's avatar
Jingning Han committed
176 177
    if (vpx_read(r, MV_UPDATE_PROB))
      p[i] = (vpx_read_literal(r, 7) << 1) | 1;
178
#endif
Jingning Han's avatar
Jingning Han committed
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
}

static void read_mv_probs(nmv_context *ctx, int allow_hp, vpx_reader *r) {
  int i, j;

  update_mv_probs(ctx->joints, MV_JOINTS - 1, r);

  for (i = 0; i < 2; ++i) {
    nmv_component *const comp_ctx = &ctx->comps[i];
    update_mv_probs(&comp_ctx->sign, 1, r);
    update_mv_probs(comp_ctx->classes, MV_CLASSES - 1, r);
    update_mv_probs(comp_ctx->class0, CLASS0_SIZE - 1, r);
    update_mv_probs(comp_ctx->bits, MV_OFFSET_BITS, r);
  }

  for (i = 0; i < 2; ++i) {
    nmv_component *const comp_ctx = &ctx->comps[i];
    for (j = 0; j < CLASS0_SIZE; ++j)
      update_mv_probs(comp_ctx->class0_fp[j], MV_FP_SIZE - 1, r);
    update_mv_probs(comp_ctx->fp, 3, r);
  }

  if (allow_hp) {
    for (i = 0; i < 2; ++i) {
      nmv_component *const comp_ctx = &ctx->comps[i];
      update_mv_probs(&comp_ctx->class0_hp, 1, r);
      update_mv_probs(&comp_ctx->hp, 1, r);
    }
  }
}

static void inverse_transform_block_inter(MACROBLOCKD* xd, int plane,
                                          const TX_SIZE tx_size,
                                          uint8_t *dst, int stride,
hui su's avatar
hui su committed
213
                                          int eob, int block) {
Jingning Han's avatar
Jingning Han committed
214
  struct macroblockd_plane *const pd = &xd->plane[plane];
hui su's avatar
hui su committed
215
  TX_TYPE tx_type = get_tx_type(pd->plane_type, xd, block);
Jingning Han's avatar
Jingning Han committed
216 217 218 219
  if (eob > 0) {
    tran_low_t *const dqcoeff = pd->dqcoeff;
#if CONFIG_VP9_HIGHBITDEPTH
    if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
hui su's avatar
hui su committed
220 221 222
      switch (tx_size) {
        case TX_4X4:
          vp10_highbd_inv_txfm_add_4x4(dqcoeff, dst, stride, eob, xd->bd,
223
                                       tx_type, xd->lossless);
hui su's avatar
hui su committed
224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
          break;
        case TX_8X8:
          vp10_highbd_inv_txfm_add_8x8(dqcoeff, dst, stride, eob, xd->bd,
                                       tx_type);
          break;
        case TX_16X16:
          vp10_highbd_inv_txfm_add_16x16(dqcoeff, dst, stride, eob, xd->bd,
                                         tx_type);
          break;
        case TX_32X32:
          vp10_highbd_inv_txfm_add_32x32(dqcoeff, dst, stride, eob, xd->bd,
                                         tx_type);
          break;
        default:
          assert(0 && "Invalid transform size");
          return;
Jingning Han's avatar
Jingning Han committed
240 241
      }
    } else {
242
#endif  // CONFIG_VP9_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
243 244
      switch (tx_size) {
        case TX_4X4:
hui su's avatar
hui su committed
245
          vp10_inv_txfm_add_4x4(dqcoeff, dst, stride, eob, tx_type,
246
                                xd->lossless);
Jingning Han's avatar
Jingning Han committed
247 248
          break;
        case TX_8X8:
hui su's avatar
hui su committed
249
          vp10_inv_txfm_add_8x8(dqcoeff, dst, stride, eob, tx_type);
Jingning Han's avatar
Jingning Han committed
250 251
          break;
        case TX_16X16:
hui su's avatar
hui su committed
252
          vp10_inv_txfm_add_16x16(dqcoeff, dst, stride, eob, tx_type);
Jingning Han's avatar
Jingning Han committed
253 254
          break;
        case TX_32X32:
hui su's avatar
hui su committed
255
          vp10_inv_txfm_add_32x32(dqcoeff, dst, stride, eob, tx_type);
Jingning Han's avatar
Jingning Han committed
256 257 258 259 260
          break;
        default:
          assert(0 && "Invalid transform size");
          return;
      }
hui su's avatar
hui su committed
261
#if CONFIG_VP9_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
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
    }
#endif  // CONFIG_VP9_HIGHBITDEPTH

    if (eob == 1) {
      dqcoeff[0] = 0;
    } else {
      if (tx_size <= TX_16X16 && eob <= 10)
        memset(dqcoeff, 0, 4 * (4 << tx_size) * sizeof(dqcoeff[0]));
      else if (tx_size == TX_32X32 && eob <= 34)
        memset(dqcoeff, 0, 256 * sizeof(dqcoeff[0]));
      else
        memset(dqcoeff, 0, (16 << (tx_size << 1)) * sizeof(dqcoeff[0]));
    }
  }
}

static void inverse_transform_block_intra(MACROBLOCKD* xd, int plane,
                                          const TX_TYPE tx_type,
                                          const TX_SIZE tx_size,
                                          uint8_t *dst, int stride,
                                          int eob) {
  struct macroblockd_plane *const pd = &xd->plane[plane];
  if (eob > 0) {
    tran_low_t *const dqcoeff = pd->dqcoeff;
#if CONFIG_VP9_HIGHBITDEPTH
    if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
hui su's avatar
hui su committed
288 289 290
      switch (tx_size) {
        case TX_4X4:
          vp10_highbd_inv_txfm_add_4x4(dqcoeff, dst, stride, eob, xd->bd,
291
                                       tx_type, xd->lossless);
hui su's avatar
hui su committed
292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307
          break;
        case TX_8X8:
          vp10_highbd_inv_txfm_add_8x8(dqcoeff, dst, stride, eob, xd->bd,
                                       tx_type);
          break;
        case TX_16X16:
          vp10_highbd_inv_txfm_add_16x16(dqcoeff, dst, stride, eob, xd->bd,
                                         tx_type);
          break;
        case TX_32X32:
          vp10_highbd_inv_txfm_add_32x32(dqcoeff, dst, stride, eob, xd->bd,
                                         tx_type);
          break;
        default:
          assert(0 && "Invalid transform size");
          return;
Jingning Han's avatar
Jingning Han committed
308 309
      }
    } else {
310
#endif  // CONFIG_VP9_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
311 312
      switch (tx_size) {
        case TX_4X4:
hui su's avatar
hui su committed
313
          vp10_inv_txfm_add_4x4(dqcoeff, dst, stride, eob, tx_type,
314
                                xd->lossless);
Jingning Han's avatar
Jingning Han committed
315 316
          break;
        case TX_8X8:
hui su's avatar
hui su committed
317
          vp10_inv_txfm_add_8x8(dqcoeff, dst, stride, eob, tx_type);
Jingning Han's avatar
Jingning Han committed
318 319
          break;
        case TX_16X16:
hui su's avatar
hui su committed
320
          vp10_inv_txfm_add_16x16(dqcoeff, dst, stride, eob, tx_type);
Jingning Han's avatar
Jingning Han committed
321 322
          break;
        case TX_32X32:
hui su's avatar
hui su committed
323
          vp10_inv_txfm_add_32x32(dqcoeff, dst, stride, eob, tx_type);
Jingning Han's avatar
Jingning Han committed
324 325 326 327 328
          break;
        default:
          assert(0 && "Invalid transform size");
          return;
      }
hui su's avatar
hui su committed
329
#if CONFIG_VP9_HIGHBITDEPTH
Jingning Han's avatar
Jingning Han committed
330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353
    }
#endif  // CONFIG_VP9_HIGHBITDEPTH

    if (eob == 1) {
      dqcoeff[0] = 0;
    } else {
      if (tx_type == DCT_DCT && tx_size <= TX_16X16 && eob <= 10)
        memset(dqcoeff, 0, 4 * (4 << tx_size) * sizeof(dqcoeff[0]));
      else if (tx_size == TX_32X32 && eob <= 34)
        memset(dqcoeff, 0, 256 * sizeof(dqcoeff[0]));
      else
        memset(dqcoeff, 0, (16 << (tx_size << 1)) * sizeof(dqcoeff[0]));
    }
  }
}

static void predict_and_reconstruct_intra_block(MACROBLOCKD *const xd,
                                                vpx_reader *r,
                                                MB_MODE_INFO *const mbmi,
                                                int plane,
                                                int row, int col,
                                                TX_SIZE tx_size) {
  struct macroblockd_plane *const pd = &xd->plane[plane];
  PREDICTION_MODE mode = (plane == 0) ? mbmi->mode : mbmi->uv_mode;
hui su's avatar
hui su committed
354
  PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
Jingning Han's avatar
Jingning Han committed
355
  uint8_t *dst;
hui su's avatar
hui su committed
356
  int block_idx = (row << 1) + col;
Jingning Han's avatar
Jingning Han committed
357 358 359 360 361 362 363 364 365 366 367
  dst = &pd->dst.buf[4 * row * pd->dst.stride + 4 * col];

  if (mbmi->sb_type < BLOCK_8X8)
    if (plane == 0)
      mode = xd->mi[0]->bmi[(row << 1) + col].as_mode;

  vp10_predict_intra_block(xd, pd->n4_wl, tx_size, mode,
                          dst, pd->dst.stride, dst, pd->dst.stride,
                          col, row, plane);

  if (!mbmi->skip) {
hui su's avatar
hui su committed
368 369
    TX_TYPE tx_type = get_tx_type(plane_type, xd, block_idx);
    const scan_order *sc = get_scan(tx_size, tx_type);
Jingning Han's avatar
Jingning Han committed
370
    const int eob = vp10_decode_block_tokens(xd, plane, sc, col, row, tx_size,
hui su's avatar
hui su committed
371
                                             r, mbmi->segment_id);
Jingning Han's avatar
Jingning Han committed
372 373 374 375 376 377 378 379 380
    inverse_transform_block_intra(xd, plane, tx_type, tx_size,
                                  dst, pd->dst.stride, eob);
  }
}

static int reconstruct_inter_block(MACROBLOCKD *const xd, vpx_reader *r,
                                   MB_MODE_INFO *const mbmi, int plane,
                                   int row, int col, TX_SIZE tx_size) {
  struct macroblockd_plane *const pd = &xd->plane[plane];
hui su's avatar
hui su committed
381 382 383 384
  PLANE_TYPE plane_type = (plane == 0) ? PLANE_TYPE_Y : PLANE_TYPE_UV;
  int block_idx = (row << 1) + col;
  TX_TYPE tx_type = get_tx_type(plane_type, xd, block_idx);
  const scan_order *sc = get_scan(tx_size, tx_type);
Jingning Han's avatar
Jingning Han committed
385 386 387 388 389
  const int eob = vp10_decode_block_tokens(xd, plane, sc, col, row, tx_size, r,
                                          mbmi->segment_id);

  inverse_transform_block_inter(xd, plane, tx_size,
                            &pd->dst.buf[4 * row * pd->dst.stride + 4 * col],
hui su's avatar
hui su committed
390
                            pd->dst.stride, eob, block_idx);
Jingning Han's avatar
Jingning Han committed
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
  return eob;
}

static void build_mc_border(const uint8_t *src, int src_stride,
                            uint8_t *dst, int dst_stride,
                            int x, int y, int b_w, int b_h, int w, int h) {
  // Get a pointer to the start of the real data for this row.
  const uint8_t *ref_row = src - x - y * src_stride;

  if (y >= h)
    ref_row += (h - 1) * src_stride;
  else if (y > 0)
    ref_row += y * src_stride;

  do {
    int right = 0, copy;
    int left = x < 0 ? -x : 0;

    if (left > b_w)
      left = b_w;

    if (x + b_w > w)
      right = x + b_w - w;

    if (right > b_w)
      right = b_w;

    copy = b_w - left - right;

    if (left)
      memset(dst, ref_row[0], left);

    if (copy)
      memcpy(dst + left, ref_row + x + left, copy);

    if (right)
      memset(dst + left + copy, ref_row[w - 1], right);

    dst += dst_stride;
    ++y;

    if (y > 0 && y < h)
      ref_row += src_stride;
  } while (--b_h);
}

#if CONFIG_VP9_HIGHBITDEPTH
static void high_build_mc_border(const uint8_t *src8, int src_stride,
                                 uint16_t *dst, int dst_stride,
                                 int x, int y, int b_w, int b_h,
                                 int w, int h) {
  // Get a pointer to the start of the real data for this row.
  const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
  const uint16_t *ref_row = src - x - y * src_stride;

  if (y >= h)
    ref_row += (h - 1) * src_stride;
  else if (y > 0)
    ref_row += y * src_stride;

  do {
    int right = 0, copy;
    int left = x < 0 ? -x : 0;

    if (left > b_w)
      left = b_w;

    if (x + b_w > w)
      right = x + b_w - w;

    if (right > b_w)
      right = b_w;

    copy = b_w - left - right;

    if (left)
      vpx_memset16(dst, ref_row[0], left);

    if (copy)
      memcpy(dst + left, ref_row + x + left, copy * sizeof(uint16_t));

    if (right)
      vpx_memset16(dst + left + copy, ref_row[w - 1], right);

    dst += dst_stride;
    ++y;

    if (y > 0 && y < h)
      ref_row += src_stride;
  } while (--b_h);
}
#endif  // CONFIG_VP9_HIGHBITDEPTH

#if CONFIG_VP9_HIGHBITDEPTH
static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride,
                               int x0, int y0, int b_w, int b_h,
                               int frame_width, int frame_height,
                               int border_offset,
                               uint8_t *const dst, int dst_buf_stride,
                               int subpel_x, int subpel_y,
                               const InterpKernel *kernel,
                               const struct scale_factors *sf,
                               MACROBLOCKD *xd,
                               int w, int h, int ref, int xs, int ys) {
  DECLARE_ALIGNED(16, uint16_t, mc_buf_high[80 * 2 * 80 * 2]);
  const uint8_t *buf_ptr;

  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    high_build_mc_border(buf_ptr1, pre_buf_stride, mc_buf_high, b_w,
                         x0, y0, b_w, b_h, frame_width, frame_height);
    buf_ptr = CONVERT_TO_BYTEPTR(mc_buf_high) + border_offset;
  } else {
    build_mc_border(buf_ptr1, pre_buf_stride, (uint8_t *)mc_buf_high, b_w,
                    x0, y0, b_w, b_h, frame_width, frame_height);
    buf_ptr = ((uint8_t *)mc_buf_high) + border_offset;
  }

  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    high_inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
                         subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd);
  } else {
    inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
                    subpel_y, sf, w, h, ref, kernel, xs, ys);
  }
}
#else
static void extend_and_predict(const uint8_t *buf_ptr1, int pre_buf_stride,
                               int x0, int y0, int b_w, int b_h,
                               int frame_width, int frame_height,
                               int border_offset,
                               uint8_t *const dst, int dst_buf_stride,
                               int subpel_x, int subpel_y,
                               const InterpKernel *kernel,
                               const struct scale_factors *sf,
                               int w, int h, int ref, int xs, int ys) {
  DECLARE_ALIGNED(16, uint8_t, mc_buf[80 * 2 * 80 * 2]);
  const uint8_t *buf_ptr;

  build_mc_border(buf_ptr1, pre_buf_stride, mc_buf, b_w,
                  x0, y0, b_w, b_h, frame_width, frame_height);
  buf_ptr = mc_buf + border_offset;

  inter_predictor(buf_ptr, b_w, dst, dst_buf_stride, subpel_x,
                  subpel_y, sf, w, h, ref, kernel, xs, ys);
}
#endif  // CONFIG_VP9_HIGHBITDEPTH

Yaowu Xu's avatar
Yaowu Xu committed
538
static void dec_build_inter_predictors(VP10Decoder *const pbi, MACROBLOCKD *xd,
Jingning Han's avatar
Jingning Han committed
539 540 541 542 543 544 545 546
                                       int plane, int bw, int bh, int x,
                                       int y, int w, int h, int mi_x, int mi_y,
                                       const InterpKernel *kernel,
                                       const struct scale_factors *sf,
                                       struct buf_2d *pre_buf,
                                       struct buf_2d *dst_buf, const MV* mv,
                                       RefCntBuffer *ref_frame_buf,
                                       int is_scaled, int ref) {
547
  VP10_COMMON *const cm = &pbi->common;
Jingning Han's avatar
Jingning Han committed
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
  struct macroblockd_plane *const pd = &xd->plane[plane];
  uint8_t *const dst = dst_buf->buf + dst_buf->stride * y + x;
  MV32 scaled_mv;
  int xs, ys, x0, y0, x0_16, y0_16, frame_width, frame_height,
      buf_stride, subpel_x, subpel_y;
  uint8_t *ref_frame, *buf_ptr;

  // Get reference frame pointer, width and height.
  if (plane == 0) {
    frame_width = ref_frame_buf->buf.y_crop_width;
    frame_height = ref_frame_buf->buf.y_crop_height;
    ref_frame = ref_frame_buf->buf.y_buffer;
  } else {
    frame_width = ref_frame_buf->buf.uv_crop_width;
    frame_height = ref_frame_buf->buf.uv_crop_height;
    ref_frame = plane == 1 ? ref_frame_buf->buf.u_buffer
                         : ref_frame_buf->buf.v_buffer;
  }

  if (is_scaled) {
    const MV mv_q4 = clamp_mv_to_umv_border_sb(xd, mv, bw, bh,
                                               pd->subsampling_x,
                                               pd->subsampling_y);
    // Co-ordinate of containing block to pixel precision.
    int x_start = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x));
    int y_start = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y));

    // Co-ordinate of the block to 1/16th pixel precision.
    x0_16 = (x_start + x) << SUBPEL_BITS;
    y0_16 = (y_start + y) << SUBPEL_BITS;

    // Co-ordinate of current block in reference frame
    // to 1/16th pixel precision.
    x0_16 = sf->scale_value_x(x0_16, sf);
    y0_16 = sf->scale_value_y(y0_16, sf);

    // Map the top left corner of the block into the reference frame.
    x0 = sf->scale_value_x(x_start + x, sf);
    y0 = sf->scale_value_y(y_start + y, sf);

    // Scale the MV and incorporate the sub-pixel offset of the block
    // in the reference frame.
    scaled_mv = vp10_scale_mv(&mv_q4, mi_x + x, mi_y + y, sf);
    xs = sf->x_step_q4;
    ys = sf->y_step_q4;
  } else {
    // Co-ordinate of containing block to pixel precision.
    x0 = (-xd->mb_to_left_edge >> (3 + pd->subsampling_x)) + x;
    y0 = (-xd->mb_to_top_edge >> (3 + pd->subsampling_y)) + y;

    // Co-ordinate of the block to 1/16th pixel precision.
    x0_16 = x0 << SUBPEL_BITS;
    y0_16 = y0 << SUBPEL_BITS;

    scaled_mv.row = mv->row * (1 << (1 - pd->subsampling_y));
    scaled_mv.col = mv->col * (1 << (1 - pd->subsampling_x));
    xs = ys = 16;
  }
  subpel_x = scaled_mv.col & SUBPEL_MASK;
  subpel_y = scaled_mv.row & SUBPEL_MASK;

  // Calculate the top left corner of the best matching block in the
  // reference frame.
  x0 += scaled_mv.col >> SUBPEL_BITS;
  y0 += scaled_mv.row >> SUBPEL_BITS;
  x0_16 += scaled_mv.col;
  y0_16 += scaled_mv.row;

  // Get reference block pointer.
  buf_ptr = ref_frame + y0 * pre_buf->stride + x0;
  buf_stride = pre_buf->stride;

  // Do border extension if there is motion or the
  // width/height is not a multiple of 8 pixels.
  if (is_scaled || scaled_mv.col || scaled_mv.row ||
      (frame_width & 0x7) || (frame_height & 0x7)) {
    int y1 = ((y0_16 + (h - 1) * ys) >> SUBPEL_BITS) + 1;

    // Get reference block bottom right horizontal coordinate.
    int x1 = ((x0_16 + (w - 1) * xs) >> SUBPEL_BITS) + 1;
    int x_pad = 0, y_pad = 0;

    if (subpel_x || (sf->x_step_q4 != SUBPEL_SHIFTS)) {
      x0 -= VP9_INTERP_EXTEND - 1;
      x1 += VP9_INTERP_EXTEND;
      x_pad = 1;
    }

    if (subpel_y || (sf->y_step_q4 != SUBPEL_SHIFTS)) {
      y0 -= VP9_INTERP_EXTEND - 1;
      y1 += VP9_INTERP_EXTEND;
      y_pad = 1;
    }

    // Wait until reference block is ready. Pad 7 more pixels as last 7
    // pixels of each superblock row can be changed by next superblock row.
644
    if (cm->frame_parallel_decode)
Jingning Han's avatar
Jingning Han committed
645
      vp10_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf,
646
                            VPXMAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1));
Jingning Han's avatar
Jingning Han committed
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670

    // Skip border extension if block is inside the frame.
    if (x0 < 0 || x0 > frame_width - 1 || x1 < 0 || x1 > frame_width - 1 ||
        y0 < 0 || y0 > frame_height - 1 || y1 < 0 || y1 > frame_height - 1) {
      // Extend the border.
      const uint8_t *const buf_ptr1 = ref_frame + y0 * buf_stride + x0;
      const int b_w = x1 - x0 + 1;
      const int b_h = y1 - y0 + 1;
      const int border_offset = y_pad * 3 * b_w + x_pad * 3;

      extend_and_predict(buf_ptr1, buf_stride, x0, y0, b_w, b_h,
                         frame_width, frame_height, border_offset,
                         dst, dst_buf->stride,
                         subpel_x, subpel_y,
                         kernel, sf,
#if CONFIG_VP9_HIGHBITDEPTH
                         xd,
#endif
                         w, h, ref, xs, ys);
      return;
    }
  } else {
    // Wait until reference block is ready. Pad 7 more pixels as last 7
    // pixels of each superblock row can be changed by next superblock row.
671
     if (cm->frame_parallel_decode) {
Jingning Han's avatar
Jingning Han committed
672 673
       const int y1 = (y0_16 + (h - 1) * ys) >> SUBPEL_BITS;
       vp10_frameworker_wait(pbi->frame_worker_owner, ref_frame_buf,
674
                             VPXMAX(0, (y1 + 7)) << (plane == 0 ? 0 : 1));
Jingning Han's avatar
Jingning Han committed
675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690
     }
  }
#if CONFIG_VP9_HIGHBITDEPTH
  if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
    high_inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
                         subpel_y, sf, w, h, ref, kernel, xs, ys, xd->bd);
  } else {
    inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
                    subpel_y, sf, w, h, ref, kernel, xs, ys);
  }
#else
  inter_predictor(buf_ptr, buf_stride, dst, dst_buf->stride, subpel_x,
                  subpel_y, sf, w, h, ref, kernel, xs, ys);
#endif  // CONFIG_VP9_HIGHBITDEPTH
}

Yaowu Xu's avatar
Yaowu Xu committed
691
static void dec_build_inter_predictors_sb(VP10Decoder *const pbi,
Jingning Han's avatar
Jingning Han committed
692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720
                                          MACROBLOCKD *xd,
                                          int mi_row, int mi_col) {
  int plane;
  const int mi_x = mi_col * MI_SIZE;
  const int mi_y = mi_row * MI_SIZE;
  const MODE_INFO *mi = xd->mi[0];
  const InterpKernel *kernel = vp10_filter_kernels[mi->mbmi.interp_filter];
  const BLOCK_SIZE sb_type = mi->mbmi.sb_type;
  const int is_compound = has_second_ref(&mi->mbmi);

  for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
    struct macroblockd_plane *const pd = &xd->plane[plane];
    struct buf_2d *const dst_buf = &pd->dst;
    const int num_4x4_w = pd->n4_w;
    const int num_4x4_h = pd->n4_h;

    const int n4w_x4 = 4 * num_4x4_w;
    const int n4h_x4 = 4 * num_4x4_h;
    int ref;

    for (ref = 0; ref < 1 + is_compound; ++ref) {
      const struct scale_factors *const sf = &xd->block_refs[ref]->sf;
      struct buf_2d *const pre_buf = &pd->pre[ref];
      const int idx = xd->block_refs[ref]->idx;
      BufferPool *const pool = pbi->common.buffer_pool;
      RefCntBuffer *const ref_frame_buf = &pool->frame_bufs[idx];
      const int is_scaled = vp10_is_scaled(sf);

      if (sb_type < BLOCK_8X8) {
721 722 723 724 725 726 727
        const PARTITION_TYPE bp = BLOCK_8X8 - sb_type;
        const int have_vsplit = bp != PARTITION_HORZ;
        const int have_hsplit = bp != PARTITION_VERT;
        const int num_4x4_w = 2 >> ((!have_vsplit) | pd->subsampling_x);
        const int num_4x4_h = 2 >> ((!have_hsplit) | pd->subsampling_y);
        const int pw = 8 >> (have_vsplit | pd->subsampling_x);
        const int ph = 8 >> (have_hsplit | pd->subsampling_y);
728
        int x, y;
Jingning Han's avatar
Jingning Han committed
729 730
        for (y = 0; y < num_4x4_h; ++y) {
          for (x = 0; x < num_4x4_w; ++x) {
731
            const MV mv = average_split_mvs(pd, mi, ref, y * 2 + x);
Jingning Han's avatar
Jingning Han committed
732
            dec_build_inter_predictors(pbi, xd, plane, n4w_x4, n4h_x4,
733
                                       4 * x, 4 * y, pw, ph, mi_x, mi_y, kernel,
Jingning Han's avatar
Jingning Han committed
734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
                                       sf, pre_buf, dst_buf, &mv,
                                       ref_frame_buf, is_scaled, ref);
          }
        }
      } else {
        const MV mv = mi->mbmi.mv[ref].as_mv;
        dec_build_inter_predictors(pbi, xd, plane, n4w_x4, n4h_x4,
                                   0, 0, n4w_x4, n4h_x4, mi_x, mi_y, kernel,
                                   sf, pre_buf, dst_buf, &mv, ref_frame_buf,
                                   is_scaled, ref);
      }
    }
  }
}

static INLINE TX_SIZE dec_get_uv_tx_size(const MB_MODE_INFO *mbmi,
                                         int n4_wl, int n4_hl) {
  // get minimum log2 num4x4s dimension
752 753
  const int x = VPXMIN(n4_wl, n4_hl);
  return VPXMIN(mbmi->tx_size,  x);
Jingning Han's avatar
Jingning Han committed
754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
}

static INLINE void dec_reset_skip_context(MACROBLOCKD *xd) {
  int i;
  for (i = 0; i < MAX_MB_PLANE; i++) {
    struct macroblockd_plane *const pd = &xd->plane[i];
    memset(pd->above_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_w);
    memset(pd->left_context, 0, sizeof(ENTROPY_CONTEXT) * pd->n4_h);
  }
}

static void set_plane_n4(MACROBLOCKD *const xd, int bw, int bh, int bwl,
                         int bhl) {
  int i;
  for (i = 0; i < MAX_MB_PLANE; i++) {
    xd->plane[i].n4_w = (bw << 1) >> xd->plane[i].subsampling_x;
    xd->plane[i].n4_h = (bh << 1) >> xd->plane[i].subsampling_y;
    xd->plane[i].n4_wl = bwl - xd->plane[i].subsampling_x;
    xd->plane[i].n4_hl = bhl - xd->plane[i].subsampling_y;
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
776
static MB_MODE_INFO *set_offsets(VP10_COMMON *const cm, MACROBLOCKD *const xd,
Jingning Han's avatar
Jingning Han committed
777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
                                 BLOCK_SIZE bsize, int mi_row, int mi_col,
                                 int bw, int bh, int x_mis, int y_mis,
                                 int bwl, int bhl) {
  const int offset = mi_row * cm->mi_stride + mi_col;
  int x, y;
  const TileInfo *const tile = &xd->tile;

  xd->mi = cm->mi_grid_visible + offset;
  xd->mi[0] = &cm->mi[offset];
  // TODO(slavarnway): Generate sb_type based on bwl and bhl, instead of
  // passing bsize from decode_partition().
  xd->mi[0]->mbmi.sb_type = bsize;
  for (y = 0; y < y_mis; ++y)
    for (x = !y; x < x_mis; ++x) {
      xd->mi[y * cm->mi_stride + x] = xd->mi[0];
    }

  set_plane_n4(xd, bw, bh, bwl, bhl);

  set_skip_context(xd, mi_row, mi_col);

  // Distance of Mb to the various image edges. These are specified to 8th pel
  // as they are always compared to values that are in 1/8th pel units
  set_mi_row_col(xd, tile, mi_row, bh, mi_col, bw, cm->mi_rows, cm->mi_cols);

  vp10_setup_dst_planes(xd->plane, get_frame_new_buffer(cm), mi_row, mi_col);
  return &xd->mi[0]->mbmi;
}

Yaowu Xu's avatar
Yaowu Xu committed
806
static void decode_block(VP10Decoder *const pbi, MACROBLOCKD *const xd,
Jingning Han's avatar
Jingning Han committed
807 808 809
                         int mi_row, int mi_col,
                         vpx_reader *r, BLOCK_SIZE bsize,
                         int bwl, int bhl) {
Yaowu Xu's avatar
Yaowu Xu committed
810
  VP10_COMMON *const cm = &pbi->common;
Jingning Han's avatar
Jingning Han committed
811 812 813
  const int less8x8 = bsize < BLOCK_8X8;
  const int bw = 1 << (bwl - 1);
  const int bh = 1 << (bhl - 1);
814 815
  const int x_mis = VPXMIN(bw, cm->mi_cols - mi_col);
  const int y_mis = VPXMIN(bh, cm->mi_rows - mi_row);
Jingning Han's avatar
Jingning Han committed
816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849

  MB_MODE_INFO *mbmi = set_offsets(cm, xd, bsize, mi_row, mi_col,
                                   bw, bh, x_mis, y_mis, bwl, bhl);

  if (bsize >= BLOCK_8X8 && (cm->subsampling_x || cm->subsampling_y)) {
    const BLOCK_SIZE uv_subsize =
        ss_size_lookup[bsize][cm->subsampling_x][cm->subsampling_y];
    if (uv_subsize == BLOCK_INVALID)
      vpx_internal_error(xd->error_info,
                         VPX_CODEC_CORRUPT_FRAME, "Invalid block size.");
  }

  vp10_read_mode_info(pbi, xd, mi_row, mi_col, r, x_mis, y_mis);

  if (mbmi->skip) {
    dec_reset_skip_context(xd);
  }

  if (!is_inter_block(mbmi)) {
    int plane;
    for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
      const struct macroblockd_plane *const pd = &xd->plane[plane];
      const TX_SIZE tx_size =
          plane ? dec_get_uv_tx_size(mbmi, pd->n4_wl, pd->n4_hl)
                  : mbmi->tx_size;
      const int num_4x4_w = pd->n4_w;
      const int num_4x4_h = pd->n4_h;
      const int step = (1 << tx_size);
      int row, col;
      const int max_blocks_wide = num_4x4_w + (xd->mb_to_right_edge >= 0 ?
          0 : xd->mb_to_right_edge >> (5 + pd->subsampling_x));
      const int max_blocks_high = num_4x4_h + (xd->mb_to_bottom_edge >= 0 ?
          0 : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y));

hui su's avatar
hui su committed
850 851 852
      if (plane <= 1 && mbmi->palette_mode_info.palette_size[plane])
          vp10_decode_palette_tokens(xd, plane, r);

Jingning Han's avatar
Jingning Han committed
853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887
      for (row = 0; row < max_blocks_high; row += step)
        for (col = 0; col < max_blocks_wide; col += step)
          predict_and_reconstruct_intra_block(xd, r, mbmi, plane,
                                              row, col, tx_size);
    }
  } else {
    // Prediction
    dec_build_inter_predictors_sb(pbi, xd, mi_row, mi_col);

    // Reconstruction
    if (!mbmi->skip) {
      int eobtotal = 0;
      int plane;

      for (plane = 0; plane < MAX_MB_PLANE; ++plane) {
        const struct macroblockd_plane *const pd = &xd->plane[plane];
        const TX_SIZE tx_size =
            plane ? dec_get_uv_tx_size(mbmi, pd->n4_wl, pd->n4_hl)
                    : mbmi->tx_size;
        const int num_4x4_w = pd->n4_w;
        const int num_4x4_h = pd->n4_h;
        const int step = (1 << tx_size);
        int row, col;
        const int max_blocks_wide = num_4x4_w + (xd->mb_to_right_edge >= 0 ?
            0 : xd->mb_to_right_edge >> (5 + pd->subsampling_x));
        const int max_blocks_high = num_4x4_h + (xd->mb_to_bottom_edge >= 0 ?
            0 : xd->mb_to_bottom_edge >> (5 + pd->subsampling_y));

        for (row = 0; row < max_blocks_high; row += step)
          for (col = 0; col < max_blocks_wide; col += step)
            eobtotal += reconstruct_inter_block(xd, r, mbmi, plane, row, col,
                                                tx_size);
      }

      if (!less8x8 && eobtotal == 0)
888 889 890
#if CONFIG_MISC_FIXES
        mbmi->has_no_coeffs = 1;  // skip loopfilter
#else
Jingning Han's avatar
Jingning Han committed
891
        mbmi->skip = 1;  // skip loopfilter
892
#endif
Jingning Han's avatar
Jingning Han committed
893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948
    }
  }

  xd->corrupted |= vpx_reader_has_error(r);
}

static INLINE int dec_partition_plane_context(const MACROBLOCKD *xd,
                                              int mi_row, int mi_col,
                                              int bsl) {
  const PARTITION_CONTEXT *above_ctx = xd->above_seg_context + mi_col;
  const PARTITION_CONTEXT *left_ctx = xd->left_seg_context + (mi_row & MI_MASK);
  int above = (*above_ctx >> bsl) & 1 , left = (*left_ctx >> bsl) & 1;

//  assert(bsl >= 0);

  return (left * 2 + above) + bsl * PARTITION_PLOFFSET;
}

static INLINE void dec_update_partition_context(MACROBLOCKD *xd,
                                                int mi_row, int mi_col,
                                                BLOCK_SIZE subsize,
                                                int bw) {
  PARTITION_CONTEXT *const above_ctx = xd->above_seg_context + mi_col;
  PARTITION_CONTEXT *const left_ctx = xd->left_seg_context + (mi_row & MI_MASK);

  // update the partition context at the end notes. set partition bits
  // of block sizes larger than the current one to be one, and partition
  // bits of smaller block sizes to be zero.
  memset(above_ctx, partition_context_lookup[subsize].above, bw);
  memset(left_ctx, partition_context_lookup[subsize].left, bw);
}

static PARTITION_TYPE read_partition(MACROBLOCKD *xd, int mi_row, int mi_col,
                                     vpx_reader *r,
                                     int has_rows, int has_cols, int bsl) {
  const int ctx = dec_partition_plane_context(xd, mi_row, mi_col, bsl);
  const vpx_prob *const probs = get_partition_probs(xd, ctx);
  FRAME_COUNTS *counts = xd->counts;
  PARTITION_TYPE p;

  if (has_rows && has_cols)
    p = (PARTITION_TYPE)vpx_read_tree(r, vp10_partition_tree, probs);
  else if (!has_rows && has_cols)
    p = vpx_read(r, probs[1]) ? PARTITION_SPLIT : PARTITION_HORZ;
  else if (has_rows && !has_cols)
    p = vpx_read(r, probs[2]) ? PARTITION_SPLIT : PARTITION_VERT;
  else
    p = PARTITION_SPLIT;

  if (counts)
    ++counts->partition[ctx][p];

  return p;
}

// TODO(slavarnway): eliminate bsize and subsize in future commits
Yaowu Xu's avatar
Yaowu Xu committed
949
static void decode_partition(VP10Decoder *const pbi, MACROBLOCKD *const xd,
Jingning Han's avatar
Jingning Han committed
950 951
                             int mi_row, int mi_col,
                             vpx_reader* r, BLOCK_SIZE bsize, int n4x4_l2) {
Yaowu Xu's avatar
Yaowu Xu committed
952
  VP10_COMMON *const cm = &pbi->common;
Jingning Han's avatar
Jingning Han committed
953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046
  const int n8x8_l2 = n4x4_l2 - 1;
  const int num_8x8_wh = 1 << n8x8_l2;
  const int hbs = num_8x8_wh >> 1;
  PARTITION_TYPE partition;
  BLOCK_SIZE subsize;
  const int has_rows = (mi_row + hbs) < cm->mi_rows;
  const int has_cols = (mi_col + hbs) < cm->mi_cols;

  if (mi_row >= cm->mi_rows || mi_col >= cm->mi_cols)
    return;

  partition = read_partition(xd, mi_row, mi_col, r, has_rows, has_cols,
                             n8x8_l2);
  subsize = subsize_lookup[partition][bsize];  // get_subsize(bsize, partition);
  if (!hbs) {
    // calculate bmode block dimensions (log 2)
    xd->bmode_blocks_wl = 1 >> !!(partition & PARTITION_VERT);
    xd->bmode_blocks_hl = 1 >> !!(partition & PARTITION_HORZ);
    decode_block(pbi, xd, mi_row, mi_col, r, subsize, 1, 1);
  } else {
    switch (partition) {
      case PARTITION_NONE:
        decode_block(pbi, xd, mi_row, mi_col, r, subsize, n4x4_l2, n4x4_l2);
        break;
      case PARTITION_HORZ:
        decode_block(pbi, xd, mi_row, mi_col, r, subsize, n4x4_l2, n8x8_l2);
        if (has_rows)
          decode_block(pbi, xd, mi_row + hbs, mi_col, r, subsize, n4x4_l2,
                       n8x8_l2);
        break;
      case PARTITION_VERT:
        decode_block(pbi, xd, mi_row, mi_col, r, subsize, n8x8_l2, n4x4_l2);
        if (has_cols)
          decode_block(pbi, xd, mi_row, mi_col + hbs, r, subsize, n8x8_l2,
                       n4x4_l2);
        break;
      case PARTITION_SPLIT:
        decode_partition(pbi, xd, mi_row, mi_col, r, subsize, n8x8_l2);
        decode_partition(pbi, xd, mi_row, mi_col + hbs, r, subsize, n8x8_l2);
        decode_partition(pbi, xd, mi_row + hbs, mi_col, r, subsize, n8x8_l2);
        decode_partition(pbi, xd, mi_row + hbs, mi_col + hbs, r, subsize,
                         n8x8_l2);
        break;
      default:
        assert(0 && "Invalid partition type");
    }
  }

  // update partition context
  if (bsize >= BLOCK_8X8 &&
      (bsize == BLOCK_8X8 || partition != PARTITION_SPLIT))
    dec_update_partition_context(xd, mi_row, mi_col, subsize, num_8x8_wh);
}

static void setup_token_decoder(const uint8_t *data,
                                const uint8_t *data_end,
                                size_t read_size,
                                struct vpx_internal_error_info *error_info,
                                vpx_reader *r,
                                vpx_decrypt_cb decrypt_cb,
                                void *decrypt_state) {
  // Validate the calculated partition length. If the buffer
  // described by the partition can't be fully read, then restrict
  // it to the portion that can be (for EC mode) or throw an error.
  if (!read_is_valid(data, read_size, data_end))
    vpx_internal_error(error_info, VPX_CODEC_CORRUPT_FRAME,
                       "Truncated packet or corrupt tile length");

  if (vpx_reader_init(r, data, read_size, decrypt_cb, decrypt_state))
    vpx_internal_error(error_info, VPX_CODEC_MEM_ERROR,
                       "Failed to allocate bool decoder %d", 1);
}

static void read_coef_probs_common(vp10_coeff_probs_model *coef_probs,
                                   vpx_reader *r) {
  int i, j, k, l, m;

  if (vpx_read_bit(r))
    for (i = 0; i < PLANE_TYPES; ++i)
      for (j = 0; j < REF_TYPES; ++j)
        for (k = 0; k < COEF_BANDS; ++k)
          for (l = 0; l < BAND_COEFF_CONTEXTS(k); ++l)
            for (m = 0; m < UNCONSTRAINED_NODES; ++m)
              vp10_diff_update_prob(r, &coef_probs[i][j][k][l][m]);
}

static void read_coef_probs(FRAME_CONTEXT *fc, TX_MODE tx_mode,
                            vpx_reader *r) {
    const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size[tx_mode];
    TX_SIZE tx_size;
    for (tx_size = TX_4X4; tx_size <= max_tx_size; ++tx_size)
      read_coef_probs_common(fc->coef_probs[tx_size], r);
}

1047
static void setup_segmentation(VP10_COMMON *const cm,
Jingning Han's avatar
Jingning Han committed
1048
                               struct vpx_read_bit_buffer *rb) {
1049
  struct segmentation *const seg = &cm->seg;
1050 1051 1052
#if !CONFIG_MISC_FIXES
  struct segmentation_probs *const segp = &cm->segp;
#endif
Jingning Han's avatar
Jingning Han committed
1053 1054 1055 1056 1057 1058 1059 1060 1061 1062
  int i, j;

  seg->update_map = 0;
  seg->update_data = 0;

  seg->enabled = vpx_rb_read_bit(rb);
  if (!seg->enabled)
    return;

  // Segmentation map update
1063 1064 1065 1066 1067
  if (frame_is_intra_only(cm) || cm->error_resilient_mode) {
    seg->update_map = 1;
  } else {
    seg->update_map = vpx_rb_read_bit(rb);
  }
Jingning Han's avatar
Jingning Han committed
1068
  if (seg->update_map) {
1069
#if !CONFIG_MISC_FIXES
Jingning Han's avatar
Jingning Han committed
1070
    for (i = 0; i < SEG_TREE_PROBS; i++)
1071 1072 1073
      segp->tree_probs[i] = vpx_rb_read_bit(rb) ? vpx_rb_read_literal(rb, 8)
                                                : MAX_PROB;
#endif
1074 1075 1076 1077 1078
    if (frame_is_intra_only(cm) || cm->error_resilient_mode) {
      seg->temporal_update = 0;
    } else {
      seg->temporal_update = vpx_rb_read_bit(rb);
    }
1079
#if !CONFIG_MISC_FIXES
Jingning Han's avatar
Jingning Han committed
1080 1081
    if (seg->temporal_update) {
      for (i = 0; i < PREDICTION_PROBS; i++)
1082 1083
        segp->pred_probs[i] = vpx_rb_read_bit(rb) ? vpx_rb_read_literal(rb, 8)
                                                  : MAX_PROB;
Jingning Han's avatar
Jingning Han committed
1084 1085
    } else {
      for (i = 0; i < PREDICTION_PROBS; i++)
1086
        segp->pred_probs[i] = MAX_PROB;
Jingning Han's avatar
Jingning Han committed
1087
    }
1088
#endif
Jingning Han's avatar
Jingning Han committed
1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128
  }

  // Segmentation data update
  seg->update_data = vpx_rb_read_bit(rb);
  if (seg->update_data) {
    seg->abs_delta = vpx_rb_read_bit(rb);

    vp10_clearall_segfeatures(seg);

    for (i = 0; i < MAX_SEGMENTS; i++) {
      for (j = 0; j < SEG_LVL_MAX; j++) {
        int data = 0;
        const int feature_enabled = vpx_rb_read_bit(rb);
        if (feature_enabled) {
          vp10_enable_segfeature(seg, i, j);
          data = decode_unsigned_max(rb, vp10_seg_feature_data_max(j));
          if (vp10_is_segfeature_signed(j))
            data = vpx_rb_read_bit(rb) ? -data : data;
        }
        vp10_set_segdata(seg, i, j, data);
      }
    }
  }
}

static void setup_loopfilter(struct loopfilter *lf,
                             struct vpx_read_bit_buffer *rb) {
  lf->filter_level = vpx_rb_read_literal(rb, 6);
  lf->sharpness_level = vpx_rb_read_literal(rb, 3);

  // Read in loop filter deltas applied at the MB level based on mode or ref
  // frame.
  lf->mode_ref_delta_update = 0;

  lf->mode_ref_delta_enabled = vpx_rb_read_bit(rb);
  if (lf->mode_ref_delta_enabled) {
    lf->mode_ref_delta_update = vpx_rb_read_bit(rb);
    if (lf->mode_ref_delta_update) {
      int i;

1129
      for (i = 0; i < MAX_REF_FRAMES; i++)
Jingning Han's avatar
Jingning Han committed
1130
        if (vpx_rb_read_bit(rb))
1131
          lf->ref_deltas[i] = vpx_rb_read_inv_signed_literal(rb, 6);
Jingning Han's avatar
Jingning Han committed
1132 1133 1134

      for (i = 0; i < MAX_MODE_LF_DELTAS; i++)
        if (vpx_rb_read_bit(rb))
1135
          lf->mode_deltas[i] = vpx_rb_read_inv_signed_literal(rb, 6);
Jingning Han's avatar
Jingning Han committed
1136 1137 1138 1139 1140
    }
  }
}

static INLINE int read_delta_q(struct vpx_read_bit_buffer *rb) {
1141 1142
  return vpx_rb_read_bit(rb) ?
      vpx_rb_read_inv_signed_literal(rb, CONFIG_MISC_FIXES ? 6 : 4) : 0;
Jingning Han's avatar
Jingning Han committed
1143 1144
}

Yaowu Xu's avatar
Yaowu Xu committed
1145
static void setup_quantization(VP10_COMMON *const cm, MACROBLOCKD *const xd,
Jingning Han's avatar
Jingning Han committed
1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
                               struct vpx_read_bit_buffer *rb) {
  cm->base_qindex = vpx_rb_read_literal(rb, QINDEX_BITS);
  cm->y_dc_delta_q = read_delta_q(rb);
  cm->uv_dc_delta_q = read_delta_q(rb);
  cm->uv_ac_delta_q = read_delta_q(rb);
  cm->dequant_bit_depth = cm->bit_depth;
  xd->lossless = cm->base_qindex == 0 &&
                 cm->y_dc_delta_q == 0 &&
                 cm->uv_dc_delta_q == 0 &&
                 cm->uv_ac_delta_q == 0;

#if CONFIG_VP9_HIGHBITDEPTH
  xd->bd = (int)cm->bit_depth;
#endif
}

Yaowu Xu's avatar
Yaowu Xu committed
1162
static void setup_segmentation_dequant(VP10_COMMON *const cm) {
Jingning Han's avatar
Jingning Han committed
1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
  // Build y/uv dequant values based on segmentation.
  if (cm->seg.enabled) {
    int i;
    for (i = 0; i < MAX_SEGMENTS; ++i) {
      const int qindex = vp10_get_qindex(&cm->seg, i, cm->base_qindex);
      cm->y_dequant[i][0] = vp10_dc_quant(qindex, cm->y_dc_delta_q,
                                         cm->bit_depth);
      cm->y_dequant[i][1] = vp10_ac_quant(qindex, 0, cm->bit_depth);
      cm->uv_dequant[i][0] = vp10_dc_quant(qindex, cm->uv_dc_delta_q,
                                          cm->bit_depth);
      cm->uv_dequant[i][1] = vp10_ac_quant(qindex, cm->uv_ac_delta_q,
                                          cm->bit_depth);
    }
  } else {
    const int qindex = cm->base_qindex;
    // When segmentation is disabled, only the first value is used.  The
    // remaining are don't cares.
    cm->y_dequant[0][0] = vp10_dc_quant(qindex, cm->y_dc_delta_q, cm->bit_depth);
    cm->y_dequant[0][1] = vp10_ac_quant(qindex, 0, cm->bit_depth);
    cm->uv_dequant[0][0] = vp10_dc_quant(qindex, cm->uv_dc_delta_q,
                                        cm->bit_depth);
    cm->uv_dequant[0][1] = vp10_ac_quant(qindex, cm->uv_ac_delta_q,
                                        cm->bit_depth);
  }
}

static INTERP_FILTER read_interp_filter(struct vpx_read_bit_buffer *rb) {
1190
  return vpx_rb_read_bit(rb) ? SWITCHABLE : vpx_rb_read_literal(rb, 2);
Jingning Han's avatar
Jingning Han committed
1191 1192
}

1193 1194 1195 1196
static void setup_render_size(VP10_COMMON *cm,
                              struct vpx_read_bit_buffer *rb) {
  cm->render_width = cm->width;
  cm->render_height = cm->height;
Jingning Han's avatar
Jingning Han committed
1197
  if (vpx_rb_read_bit(rb))
1198
    vp10_read_frame_size(rb, &cm->render_width, &cm->render_height);
Jingning Han's avatar
Jingning Han committed
1199 1200
}

Yaowu Xu's avatar
Yaowu Xu committed
1201
static void resize_mv_buffer(VP10_COMMON *cm) {
Jingning Han's avatar
Jingning Han committed
1202 1203 1204 1205 1206 1207 1208
  vpx_free(cm->cur_frame->mvs);
  cm->cur_frame->mi_rows = cm->mi_rows;
  cm->cur_frame->mi_cols = cm->mi_cols;
  cm->cur_frame->mvs = (MV_REF *)vpx_calloc(cm->mi_rows * cm->mi_cols,
                                            sizeof(*cm->cur_frame->mvs));
}

Yaowu Xu's avatar
Yaowu Xu committed
1209
static void resize_context_buffers(VP10_COMMON *cm, int width, int height) {
Jingning Han's avatar
Jingning Han committed
1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240
#if CONFIG_SIZE_LIMIT
  if (width > DECODE_WIDTH_LIMIT || height > DECODE_HEIGHT_LIMIT)
    vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
                       "Dimensions of %dx%d beyond allowed size of %dx%d.",
                       width, height, DECODE_WIDTH_LIMIT, DECODE_HEIGHT_LIMIT);
#endif
  if (cm->width != width || cm->height != height) {
    const int new_mi_rows =
        ALIGN_POWER_OF_TWO(height, MI_SIZE_LOG2) >> MI_SIZE_LOG2;
    const int new_mi_cols =
        ALIGN_POWER_OF_TWO(width,  MI_SIZE_LOG2) >> MI_SIZE_LOG2;

    // Allocations in vp10_alloc_context_buffers() depend on individual
    // dimensions as well as the overall size.
    if (new_mi_cols > cm->mi_cols || new_mi_rows > cm->mi_rows) {
      if (vp10_alloc_context_buffers(cm, width, height))
        vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
                           "Failed to allocate context buffers");
    } else {
      vp10_set_mb_mi(cm, width, height);
    }
    vp10_init_context_buffers(cm);
    cm->width = width;
    cm->height = height;
  }
  if (cm->cur_frame->mvs == NULL || cm->mi_rows > cm->cur_frame->mi_rows ||
      cm->mi_cols > cm->cur_frame->mi_cols) {
    resize_mv_buffer(cm);
  }
}

Yaowu Xu's avatar
Yaowu Xu committed
1241
static void setup_frame_size(VP10_COMMON *cm, struct vpx_read_bit_buffer *rb) {
Jingning Han's avatar
Jingning Han committed
1242 1243 1244 1245
  int width, height;
  BufferPool *const pool = cm->buffer_pool;
  vp10_read_frame_size(rb, &width, &height);
  resize_context_buffers(cm, width, height);
1246
  setup_render_size(cm, rb);
Jingning Han's avatar
Jingning Han committed
1247 1248

  lock_buffer_pool(pool);
1249
  if (vpx_realloc_frame_buffer(
Jingning Han's avatar
Jingning Han committed
1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
          get_frame_new_buffer(cm), cm->width, cm->height,
          cm->subsampling_x, cm->subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
          cm->use_highbitdepth,
#endif
          VP9_DEC_BORDER_IN_PIXELS,
          cm->byte_alignment,
          &pool->frame_bufs[cm->new_fb_idx].raw_frame_buffer, pool->get_fb_cb,
          pool->cb_priv)) {
    unlock_buffer_pool(pool);
    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
                       "Failed to allocate frame buffer");
  }
  unlock_buffer_pool(pool);

  pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x;
  pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y;
  pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth;
  pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space;
1269
  pool->frame_bufs[cm->new_fb_idx].buf.color_range = cm->color_range;
1270 1271
  pool->frame_bufs[cm->new_fb_idx].buf.render_width  = cm->render_width;
  pool->frame_bufs[cm->new_fb_idx].buf.render_height = cm->render_height;
Jingning Han's avatar
Jingning Han committed
1272 1273 1274 1275 1276 1277 1278 1279 1280 1281
}

static INLINE int valid_ref_frame_img_fmt(vpx_bit_depth_t ref_bit_depth,
                                          int ref_xss, int ref_yss,
                                          vpx_bit_depth_t this_bit_depth,
                                          int this_xss, int this_yss) {
  return ref_bit_depth == this_bit_depth && ref_xss == this_xss &&
         ref_yss == this_yss;
}

Yaowu Xu's avatar
Yaowu Xu committed
1282
static void setup_frame_size_with_refs(VP10_COMMON *cm,
Jingning Han's avatar
Jingning Han committed
1283 1284 1285 1286 1287 1288 1289 1290 1291 1292
                                       struct vpx_read_bit_buffer *rb) {
  int width, height;
  int found = 0, i;
  int has_valid_ref_frame = 0;
  BufferPool *const pool = cm->buffer_pool;
  for (i = 0; i < REFS_PER_FRAME; ++i) {
    if (vpx_rb_read_bit(rb)) {
      YV12_BUFFER_CONFIG *const buf = cm->frame_refs[i].buf;
      width = buf->y_crop_width;
      height = buf->y_crop_height;
1293 1294 1295 1296
#if CONFIG_MISC_FIXES
      cm->render_width = buf->render_width;
      cm->render_height = buf->render_height;
#endif
Jingning Han's avatar
Jingning Han committed
1297 1298 1299 1300 1301
      found = 1;
      break;
    }
  }

1302
  if (!found) {
Jingning Han's avatar
Jingning Han committed
1303
    vp10_read_frame_size(rb, &width, &height);
1304 1305 1306 1307
#if CONFIG_MISC_FIXES
    setup_render_size(cm, rb);
#endif
  }
Jingning Han's avatar
Jingning Han committed
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337

  if (width <= 0 || height <= 0)
    vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
                       "Invalid frame size");

  // Check to make sure at least one of frames that this frame references
  // has valid dimensions.
  for (i = 0; i < REFS_PER_FRAME; ++i) {
    RefBuffer *const ref_frame = &cm->frame_refs[i];
    has_valid_ref_frame |= valid_ref_frame_size(ref_frame->buf->y_crop_width,
                                                ref_frame->buf->y_crop_height,
                                                width, height);
  }
  if (!has_valid_ref_frame)
    vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
                       "Referenced frame has invalid size");
  for (i = 0; i < REFS_PER_FRAME; ++i) {
    RefBuffer *const ref_frame = &cm->frame_refs[i];
    if (!valid_ref_frame_img_fmt(
            ref_frame->buf->bit_depth,
            ref_frame->buf->subsampling_x,
            ref_frame->buf->subsampling_y,
            cm->bit_depth,
            cm->subsampling_x,
            cm->subsampling_y))
      vpx_internal_error(&cm->error, VPX_CODEC_CORRUPT_FRAME,
                         "Referenced frame has incompatible color format");
  }

  resize_context_buffers(cm, width, height);
1338
#if !CONFIG_MISC_FIXES
1339
  setup_render_size(cm, rb);
1340
#endif
Jingning Han's avatar
Jingning Han committed
1341 1342

  lock_buffer_pool(pool);
1343
  if (vpx_realloc_frame_buffer(
Jingning Han's avatar
Jingning Han committed
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362
          get_frame_new_buffer(cm), cm->width, cm->height,
          cm->subsampling_x, cm->subsampling_y,
#if CONFIG_VP9_HIGHBITDEPTH
          cm->use_highbitdepth,
#endif
          VP9_DEC_BORDER_IN_PIXELS,
          cm->byte_alignment,
          &pool->frame_bufs[cm->new_fb_idx].raw_frame_buffer, pool->get_fb_cb,
          pool->cb_priv)) {
    unlock_buffer_pool(pool);
    vpx_internal_error(&cm->error, VPX_CODEC_MEM_ERROR,
                       "Failed to allocate frame buffer");
  }
  unlock_buffer_pool(pool);

  pool->frame_bufs[cm->new_fb_idx].buf.subsampling_x = cm->subsampling_x;
  pool->frame_bufs[cm->new_fb_idx].buf.subsampling_y = cm->subsampling_y;
  pool->frame_bufs[cm->new_fb_idx].buf.bit_depth = (unsigned int)cm->bit_depth;
  pool->frame_bufs[cm->new_fb_idx].buf.color_space = cm->color_space;
1363
  pool->frame_bufs[cm->new_fb_idx].buf.color_range = cm->color_range;
1364 1365
  pool->frame_bufs[cm->new_fb_idx].buf.render_width  = cm->render_width;
  pool->frame_bufs[cm->new_fb_idx].buf.render_height = cm->render_height;
Jingning Han's avatar
Jingning Han committed
1366 </