Ejemplo n.º 1
0
static int decode_coefs(const MACROBLOCKD *xd, PLANE_TYPE type,
                        tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
                        int ctx, const int16_t *scan, const int16_t *nb,
                        vpx_reader *r)
#endif
{
  FRAME_COUNTS *counts = xd->counts;
  const int max_eob = 16 << (tx_size << 1);
  const FRAME_CONTEXT *const fc = xd->fc;
  const int ref = is_inter_block(&xd->mi[0]->mbmi);
#if CONFIG_AOM_QM
  const qm_val_t *iqmatrix = iqm[!ref][tx_size];
#endif
  int band, c = 0;
  const vpx_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
      fc->coef_probs[tx_size][type][ref];
  const vpx_prob *prob;
  unsigned int(*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1];
  unsigned int(*eob_branch_count)[COEFF_CONTEXTS];
  uint8_t token_cache[32 * 32];
  const uint8_t *band_translate = get_band_translate(tx_size);
  const int dq_shift = (tx_size == TX_32X32);
  int v, token;
  int16_t dqv = dq[0];
  const uint8_t *cat1_prob;
  const uint8_t *cat2_prob;
  const uint8_t *cat3_prob;
  const uint8_t *cat4_prob;
  const uint8_t *cat5_prob;
  const uint8_t *cat6_prob;

  if (counts) {
    coef_counts = counts->coef[tx_size][type][ref];
    eob_branch_count = counts->eob_branch[tx_size][type][ref];
  }

#if CONFIG_VPX_HIGHBITDEPTH
  if (xd->bd > VPX_BITS_8) {
    if (xd->bd == VPX_BITS_10) {
      cat1_prob = vp10_cat1_prob_high10;
      cat2_prob = vp10_cat2_prob_high10;
      cat3_prob = vp10_cat3_prob_high10;
      cat4_prob = vp10_cat4_prob_high10;
      cat5_prob = vp10_cat5_prob_high10;
      cat6_prob = vp10_cat6_prob_high10;
    } else {
      cat1_prob = vp10_cat1_prob_high12;
      cat2_prob = vp10_cat2_prob_high12;
      cat3_prob = vp10_cat3_prob_high12;
      cat4_prob = vp10_cat4_prob_high12;
      cat5_prob = vp10_cat5_prob_high12;
      cat6_prob = vp10_cat6_prob_high12;
    }
  } else {
    cat1_prob = vp10_cat1_prob;
    cat2_prob = vp10_cat2_prob;
    cat3_prob = vp10_cat3_prob;
    cat4_prob = vp10_cat4_prob;
    cat5_prob = vp10_cat5_prob;
    cat6_prob = vp10_cat6_prob;
  }
#else
  cat1_prob = vp10_cat1_prob;
  cat2_prob = vp10_cat2_prob;
  cat3_prob = vp10_cat3_prob;
  cat4_prob = vp10_cat4_prob;
  cat5_prob = vp10_cat5_prob;
  cat6_prob = vp10_cat6_prob;
#endif

  while (c < max_eob) {
    int val = -1;
    band = *band_translate++;
    prob = coef_probs[band][ctx];
    if (counts) ++eob_branch_count[band][ctx];
    if (!vpx_read(r, prob[EOB_CONTEXT_NODE])) {
      INCREMENT_COUNT(EOB_MODEL_TOKEN);
      break;
    }

    while (!vpx_read(r, prob[ZERO_CONTEXT_NODE])) {
      INCREMENT_COUNT(ZERO_TOKEN);
      dqv = dq[1];
      token_cache[scan[c]] = 0;
      ++c;
      if (c >= max_eob) return c;  // zero tokens at the end (no eob token)
      ctx = get_coef_context(nb, token_cache, c);
      band = *band_translate++;
      prob = coef_probs[band][ctx];
    }

    if (!vpx_read(r, prob[ONE_CONTEXT_NODE])) {
      INCREMENT_COUNT(ONE_TOKEN);
      token = ONE_TOKEN;
      val = 1;
    } else {
      INCREMENT_COUNT(TWO_TOKEN);
      token = vpx_read_tree(r, vp10_coef_con_tree,
                            vp10_pareto8_full[prob[PIVOT_NODE] - 1]);
      switch (token) {
        case TWO_TOKEN:
        case THREE_TOKEN:
        case FOUR_TOKEN: val = token; break;
        case CATEGORY1_TOKEN:
          val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r);
          break;
        case CATEGORY2_TOKEN:
          val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r);
          break;
        case CATEGORY3_TOKEN:
          val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r);
          break;
        case CATEGORY4_TOKEN:
          val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r);
          break;
        case CATEGORY5_TOKEN:
          val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r);
          break;
        case CATEGORY6_TOKEN: {
#if CONFIG_MISC_FIXES
          const int skip_bits = TX_SIZES - 1 - tx_size;
#else
          const int skip_bits = 0;
#endif
          const uint8_t *cat6p = cat6_prob + skip_bits;
#if CONFIG_VPX_HIGHBITDEPTH
          switch (xd->bd) {
            case VPX_BITS_8:
              val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r);
              break;
            case VPX_BITS_10:
              val = CAT6_MIN_VAL + read_coeff(cat6p, 16 - skip_bits, r);
              break;
            case VPX_BITS_12:
              val = CAT6_MIN_VAL + read_coeff(cat6p, 18 - skip_bits, r);
              break;
            default: assert(0); return -1;
          }
#else
          val = CAT6_MIN_VAL + read_coeff(cat6p, 14 - skip_bits, r);
#endif
          break;
        }
      }
    }
#if CONFIG_AOM_QM
    dqv = ((iqmatrix[scan[c]] * (int)dqv) + (1 << (AOM_QM_BITS - 1))) >>
          AOM_QM_BITS;
#endif
    v = (val * dqv) >> dq_shift;
#if CONFIG_COEFFICIENT_RANGE_CHECKING
#if CONFIG_VPX_HIGHBITDEPTH
    dqcoeff[scan[c]] = highbd_check_range((vpx_read_bit(r) ? -v : v), xd->bd);
#else
    dqcoeff[scan[c]] = check_range(vpx_read_bit(r) ? -v : v);
#endif  // CONFIG_VPX_HIGHBITDEPTH
#else
    dqcoeff[scan[c]] = vpx_read_bit(r) ? -v : v;
#endif  // CONFIG_COEFFICIENT_RANGE_CHECKING
    token_cache[scan[c]] = vp10_pt_energy_class[token];
    ++c;
    ctx = get_coef_context(nb, token_cache, c);
    dqv = dq[1];
  }

  return c;
}
Ejemplo n.º 2
0
static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd, PLANE_TYPE type,
                       int16_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
                       int ctx, const int16_t *scan, const int16_t *nb,
                       vp9_reader *r) {
  const int max_eob = 16 << (tx_size << 1);
  const FRAME_CONTEXT *const fc = &cm->fc;
  FRAME_COUNTS *const counts = &cm->counts;
  const int ref = is_inter_block(&xd->mi[0]->mbmi);
  int band, c = 0;
  const vp9_prob (*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
      fc->coef_probs[tx_size][type][ref];
  const vp9_prob *prob;
  unsigned int (*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1] =
      counts->coef[tx_size][type][ref];
  unsigned int (*eob_branch_count)[COEFF_CONTEXTS] =
      counts->eob_branch[tx_size][type][ref];
  uint8_t token_cache[32 * 32];
  const uint8_t *band_translate = get_band_translate(tx_size);
  const int dq_shift = (tx_size == TX_32X32);
  int v;
  int16_t dqv = dq[0];

  while (c < max_eob) {
    int val;
    band = *band_translate++;
    prob = coef_probs[band][ctx];
    if (!cm->frame_parallel_decoding_mode)
      ++eob_branch_count[band][ctx];
    if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) {
      INCREMENT_COUNT(EOB_MODEL_TOKEN);
      break;
    }

    while (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
      INCREMENT_COUNT(ZERO_TOKEN);
      dqv = dq[1];
      token_cache[scan[c]] = 0;
      ++c;
      if (c >= max_eob)
        return c;  // zero tokens at the end (no eob token)
      ctx = get_coef_context(nb, token_cache, c);
      band = *band_translate++;
      prob = coef_probs[band][ctx];
    }

    // ONE_CONTEXT_NODE_0_
    if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
      INCREMENT_COUNT(ONE_TOKEN);
      WRITE_COEF_CONTINUE(1, ONE_TOKEN);
    }

    INCREMENT_COUNT(TWO_TOKEN);

    prob = vp9_pareto8_full[prob[PIVOT_NODE] - 1];

    if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) {
      if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) {
        WRITE_COEF_CONTINUE(2, TWO_TOKEN);
      }
      if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) {
        WRITE_COEF_CONTINUE(3, THREE_TOKEN);
      }
      WRITE_COEF_CONTINUE(4, FOUR_TOKEN);
    }

    if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) {
      if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) {
        val = CAT1_MIN_VAL;
        ADJUST_COEF(vp9_cat1_prob[0], 0);
        WRITE_COEF_CONTINUE(val, CATEGORY1_TOKEN);
      }
      val = CAT2_MIN_VAL;
      ADJUST_COEF(vp9_cat2_prob[0], 1);
      ADJUST_COEF(vp9_cat2_prob[1], 0);
      WRITE_COEF_CONTINUE(val, CATEGORY2_TOKEN);
    }

    if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
      if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) {
        val = CAT3_MIN_VAL;
        ADJUST_COEF(vp9_cat3_prob[0], 2);
        ADJUST_COEF(vp9_cat3_prob[1], 1);
        ADJUST_COEF(vp9_cat3_prob[2], 0);
        WRITE_COEF_CONTINUE(val, CATEGORY3_TOKEN);
      }
      val = CAT4_MIN_VAL;
      ADJUST_COEF(vp9_cat4_prob[0], 3);
      ADJUST_COEF(vp9_cat4_prob[1], 2);
      ADJUST_COEF(vp9_cat4_prob[2], 1);
      ADJUST_COEF(vp9_cat4_prob[3], 0);
      WRITE_COEF_CONTINUE(val, CATEGORY4_TOKEN);
    }

    if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) {
      val = CAT5_MIN_VAL;
      ADJUST_COEF(vp9_cat5_prob[0], 4);
      ADJUST_COEF(vp9_cat5_prob[1], 3);
      ADJUST_COEF(vp9_cat5_prob[2], 2);
      ADJUST_COEF(vp9_cat5_prob[3], 1);
      ADJUST_COEF(vp9_cat5_prob[4], 0);
      WRITE_COEF_CONTINUE(val, CATEGORY5_TOKEN);
    }
    val = 0;
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[0]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[1]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[2]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[3]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[4]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[5]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[6]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[7]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[8]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[9]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[10]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[11]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[12]);
    val = (val << 1) | vp9_read(r, vp9_cat6_prob[13]);
    val += CAT6_MIN_VAL;

    WRITE_COEF_CONTINUE(val, CATEGORY6_TOKEN);
  }

  return c;
}
Ejemplo n.º 3
0
static int decode_coefs(const MACROBLOCKD *xd, PLANE_TYPE type,
                        tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
                        int ctx, const int16_t *scan, const int16_t *nb,
                        vpx_reader *r) {
  FRAME_COUNTS *counts = xd->counts;
  const int max_eob = 16 << (tx_size << 1);
  const FRAME_CONTEXT *const fc = xd->fc;
  const int ref = is_inter_block(xd->mi[0]);
  int band, c = 0;
  const vpx_prob(*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
      fc->coef_probs[tx_size][type][ref];
  const vpx_prob *prob;
  unsigned int(*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1];
  unsigned int(*eob_branch_count)[COEFF_CONTEXTS];
  uint8_t token_cache[32 * 32];
  const uint8_t *band_translate = get_band_translate(tx_size);
  const int dq_shift = (tx_size == TX_32X32);
  int v, token;
  int16_t dqv = dq[0];
  const uint8_t *const cat6_prob =
#if CONFIG_VP9_HIGHBITDEPTH
      (xd->bd == VPX_BITS_12)
          ? vp9_cat6_prob_high12
          : (xd->bd == VPX_BITS_10) ? vp9_cat6_prob_high12 + 2 :
#endif  // CONFIG_VP9_HIGHBITDEPTH
                                    vp9_cat6_prob;
  const int cat6_bits =
#if CONFIG_VP9_HIGHBITDEPTH
      (xd->bd == VPX_BITS_12) ? 18 : (xd->bd == VPX_BITS_10) ? 16 :
#endif  // CONFIG_VP9_HIGHBITDEPTH
                                                             14;

  if (counts) {
    coef_counts = counts->coef[tx_size][type][ref];
    eob_branch_count = counts->eob_branch[tx_size][type][ref];
  }

  while (c < max_eob) {
    int val = -1;
    band = *band_translate++;
    prob = coef_probs[band][ctx];
    if (counts) ++eob_branch_count[band][ctx];
    if (!vpx_read(r, prob[EOB_CONTEXT_NODE])) {
      INCREMENT_COUNT(EOB_MODEL_TOKEN);
      break;
    }

    while (!vpx_read(r, prob[ZERO_CONTEXT_NODE])) {
      INCREMENT_COUNT(ZERO_TOKEN);
      dqv = dq[1];
      token_cache[scan[c]] = 0;
      ++c;
      if (c >= max_eob) return c;  // zero tokens at the end (no eob token)
      ctx = get_coef_context(nb, token_cache, c);
      band = *band_translate++;
      prob = coef_probs[band][ctx];
    }

    if (!vpx_read(r, prob[ONE_CONTEXT_NODE])) {
      INCREMENT_COUNT(ONE_TOKEN);
      token = ONE_TOKEN;
      val = 1;
    } else {
      INCREMENT_COUNT(TWO_TOKEN);
      token = vpx_read_tree(r, vp9_coef_con_tree,
                            vp9_pareto8_full[prob[PIVOT_NODE] - 1]);
      switch (token) {
        case TWO_TOKEN:
        case THREE_TOKEN:
        case FOUR_TOKEN: val = token; break;
        case CATEGORY1_TOKEN:
          val = CAT1_MIN_VAL + read_coeff(vp9_cat1_prob, 1, r);
          break;
        case CATEGORY2_TOKEN:
          val = CAT2_MIN_VAL + read_coeff(vp9_cat2_prob, 2, r);
          break;
        case CATEGORY3_TOKEN:
          val = CAT3_MIN_VAL + read_coeff(vp9_cat3_prob, 3, r);
          break;
        case CATEGORY4_TOKEN:
          val = CAT4_MIN_VAL + read_coeff(vp9_cat4_prob, 4, r);
          break;
        case CATEGORY5_TOKEN:
          val = CAT5_MIN_VAL + read_coeff(vp9_cat5_prob, 5, r);
          break;
        case CATEGORY6_TOKEN:
          val = CAT6_MIN_VAL + read_coeff(cat6_prob, cat6_bits, r);
          break;
      }
    }
    v = (val * dqv) >> dq_shift;
#if CONFIG_COEFFICIENT_RANGE_CHECKING
#if CONFIG_VP9_HIGHBITDEPTH
    dqcoeff[scan[c]] = highbd_check_range((vpx_read_bit(r) ? -v : v), xd->bd);
#else
    dqcoeff[scan[c]] = check_range(vpx_read_bit(r) ? -v : v);
#endif  // CONFIG_VP9_HIGHBITDEPTH
#else
    dqcoeff[scan[c]] = vpx_read_bit(r) ? -v : v;
#endif  // CONFIG_COEFFICIENT_RANGE_CHECKING
    token_cache[scan[c]] = vp9_pt_energy_class[token];
    ++c;
    ctx = get_coef_context(nb, token_cache, c);
    dqv = dq[1];
  }

  return c;
}
Ejemplo n.º 4
0
static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd,
                        vp9_reader *r, int block_idx,
                        PLANE_TYPE type, int seg_eob, int16_t *qcoeff_ptr,
                        TX_SIZE tx_size, const int16_t *dq, int pt) {
  const FRAME_CONTEXT *const fc = &cm->fc;
  FRAME_COUNTS *const counts = &cm->counts;
  const int ref = is_inter_block(&xd->mi_8x8[0]->mbmi);
  int band, c = 0;
  const vp9_prob (*coef_probs)[PREV_COEF_CONTEXTS][UNCONSTRAINED_NODES] =
      fc->coef_probs[tx_size][type][ref];
  vp9_prob coef_probs_full[COEF_BANDS][PREV_COEF_CONTEXTS][ENTROPY_NODES];
  uint8_t load_map[COEF_BANDS][PREV_COEF_CONTEXTS] = { { 0 } };
  const vp9_prob *prob;
  vp9_coeff_count_model *coef_counts = counts->coef[tx_size];
  const int16_t *scan, *nb;
  const uint8_t *const band_translate = get_band_translate(tx_size);
  uint8_t token_cache[1024];
  get_scan(xd, tx_size, type, block_idx, &scan, &nb);

  while (1) {
    int val;
    const uint8_t *cat6 = cat6_prob;
    if (c >= seg_eob)
      break;
    if (c)
      pt = get_coef_context(nb, token_cache, c);
    band = get_coef_band(band_translate, c);
    prob = coef_probs[band][pt];
    if (!cm->frame_parallel_decoding_mode)
      ++counts->eob_branch[tx_size][type][ref][band][pt];
    if (!vp9_read(r, prob[EOB_CONTEXT_NODE]))
      break;

  SKIP_START:
    if (c >= seg_eob)
      break;
    if (c)
      pt = get_coef_context(nb, token_cache, c);
    band = get_coef_band(band_translate, c);
    prob = coef_probs[band][pt];

    if (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
      INCREMENT_COUNT(ZERO_TOKEN);
      ++c;
      goto SKIP_START;
    }

    // ONE_CONTEXT_NODE_0_
    if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
      WRITE_COEF_CONTINUE(1, ONE_TOKEN);
    }
    // Load full probabilities if not already loaded
    if (!load_map[band][pt]) {
      vp9_model_to_full_probs(coef_probs[band][pt],
                              coef_probs_full[band][pt]);
      load_map[band][pt] = 1;
    }
    prob = coef_probs_full[band][pt];
    // LOW_VAL_CONTEXT_NODE_0_
    if (!vp9_read(r, prob[LOW_VAL_CONTEXT_NODE])) {
      if (!vp9_read(r, prob[TWO_CONTEXT_NODE])) {
        WRITE_COEF_CONTINUE(2, TWO_TOKEN);
      }
      if (!vp9_read(r, prob[THREE_CONTEXT_NODE])) {
        WRITE_COEF_CONTINUE(3, THREE_TOKEN);
      }
      WRITE_COEF_CONTINUE(4, FOUR_TOKEN);
    }
    // HIGH_LOW_CONTEXT_NODE_0_
    if (!vp9_read(r, prob[HIGH_LOW_CONTEXT_NODE])) {
      if (!vp9_read(r, prob[CAT_ONE_CONTEXT_NODE])) {
        val = CAT1_MIN_VAL;
        ADJUST_COEF(CAT1_PROB0, 0);
        WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY1);
      }
      val = CAT2_MIN_VAL;
      ADJUST_COEF(CAT2_PROB1, 1);
      ADJUST_COEF(CAT2_PROB0, 0);
      WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY2);
    }
    // CAT_THREEFOUR_CONTEXT_NODE_0_
    if (!vp9_read(r, prob[CAT_THREEFOUR_CONTEXT_NODE])) {
      if (!vp9_read(r, prob[CAT_THREE_CONTEXT_NODE])) {
        val = CAT3_MIN_VAL;
        ADJUST_COEF(CAT3_PROB2, 2);
        ADJUST_COEF(CAT3_PROB1, 1);
        ADJUST_COEF(CAT3_PROB0, 0);
        WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY3);
      }
      val = CAT4_MIN_VAL;
      ADJUST_COEF(CAT4_PROB3, 3);
      ADJUST_COEF(CAT4_PROB2, 2);
      ADJUST_COEF(CAT4_PROB1, 1);
      ADJUST_COEF(CAT4_PROB0, 0);
      WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY4);
    }
    // CAT_FIVE_CONTEXT_NODE_0_:
    if (!vp9_read(r, prob[CAT_FIVE_CONTEXT_NODE])) {
      val = CAT5_MIN_VAL;
      ADJUST_COEF(CAT5_PROB4, 4);
      ADJUST_COEF(CAT5_PROB3, 3);
      ADJUST_COEF(CAT5_PROB2, 2);
      ADJUST_COEF(CAT5_PROB1, 1);
      ADJUST_COEF(CAT5_PROB0, 0);
      WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY5);
    }
    val = 0;
    while (*cat6) {
      val = (val << 1) | vp9_read(r, *cat6++);
    }
    val += CAT6_MIN_VAL;
    WRITE_COEF_CONTINUE(val, DCT_VAL_CATEGORY6);
  }

  if (c < seg_eob) {
    if (!cm->frame_parallel_decoding_mode)
      ++coef_counts[type][ref][band][pt][DCT_EOB_MODEL_TOKEN];
  }

  return c;
}
Ejemplo n.º 5
0
static int decode_coefs(VP9_COMMON *cm, const MACROBLOCKD *xd,
                        FRAME_COUNTS *counts, PLANE_TYPE type,
                        tran_low_t *dqcoeff, TX_SIZE tx_size, const int16_t *dq,
                        int ctx, const int16_t *scan, const int16_t *nb,
                        vp9_reader *r) {
  const int max_eob = 16 << (tx_size << 1);
  const FRAME_CONTEXT *const fc = cm->fc;
  const int ref = is_inter_block(&xd->mi[0].src_mi->mbmi);
  int band, c = 0;
  const vp9_prob (*coef_probs)[COEFF_CONTEXTS][UNCONSTRAINED_NODES] =
      fc->coef_probs[tx_size][type][ref];
  const vp9_prob *prob;
  unsigned int (*coef_counts)[COEFF_CONTEXTS][UNCONSTRAINED_NODES + 1] =
      counts->coef[tx_size][type][ref];
  unsigned int (*eob_branch_count)[COEFF_CONTEXTS] =
      counts->eob_branch[tx_size][type][ref];
  uint8_t token_cache[32 * 32];
  const uint8_t *band_translate = get_band_translate(tx_size);
  const int dq_shift = (tx_size == TX_32X32);
  int v, token;
  int16_t dqv = dq[0];
  const uint8_t *cat1_prob;
  const uint8_t *cat2_prob;
  const uint8_t *cat3_prob;
  const uint8_t *cat4_prob;
  const uint8_t *cat5_prob;
  const uint8_t *cat6_prob;

#if CONFIG_VP9_HIGHBITDEPTH
  if (cm->use_highbitdepth) {
    if (cm->bit_depth == VPX_BITS_10) {
      cat1_prob = vp9_cat1_prob_high10;
      cat2_prob = vp9_cat2_prob_high10;
      cat3_prob = vp9_cat3_prob_high10;
      cat4_prob = vp9_cat4_prob_high10;
      cat5_prob = vp9_cat5_prob_high10;
      cat6_prob = vp9_cat6_prob_high10;
    } else {
      cat1_prob = vp9_cat1_prob_high12;
      cat2_prob = vp9_cat2_prob_high12;
      cat3_prob = vp9_cat3_prob_high12;
      cat4_prob = vp9_cat4_prob_high12;
      cat5_prob = vp9_cat5_prob_high12;
      cat6_prob = vp9_cat6_prob_high12;
    }
  } else {
    cat1_prob = vp9_cat1_prob;
    cat2_prob = vp9_cat2_prob;
    cat3_prob = vp9_cat3_prob;
    cat4_prob = vp9_cat4_prob;
    cat5_prob = vp9_cat5_prob;
    cat6_prob = vp9_cat6_prob;
  }
#else
  cat1_prob = vp9_cat1_prob;
  cat2_prob = vp9_cat2_prob;
  cat3_prob = vp9_cat3_prob;
  cat4_prob = vp9_cat4_prob;
  cat5_prob = vp9_cat5_prob;
  cat6_prob = vp9_cat6_prob;
#endif

  while (c < max_eob) {
    int val = -1;
    band = *band_translate++;
    prob = coef_probs[band][ctx];
    if (!cm->frame_parallel_decoding_mode)
      ++eob_branch_count[band][ctx];
    if (!vp9_read(r, prob[EOB_CONTEXT_NODE])) {
      INCREMENT_COUNT(EOB_MODEL_TOKEN);
      break;
    }

    while (!vp9_read(r, prob[ZERO_CONTEXT_NODE])) {
      INCREMENT_COUNT(ZERO_TOKEN);
      dqv = dq[1];
      token_cache[scan[c]] = 0;
      ++c;
      if (c >= max_eob)
        return c;  // zero tokens at the end (no eob token)
      ctx = get_coef_context(nb, token_cache, c);
      band = *band_translate++;
      prob = coef_probs[band][ctx];
    }

    if (!vp9_read(r, prob[ONE_CONTEXT_NODE])) {
      INCREMENT_COUNT(ONE_TOKEN);
      token = ONE_TOKEN;
      val = 1;
    } else {
      INCREMENT_COUNT(TWO_TOKEN);
      token = vp9_read_tree(r, coeff_subtree_high,
                            vp9_pareto8_full[prob[PIVOT_NODE] - 1]);
      switch (token) {
        case TWO_TOKEN:
        case THREE_TOKEN:
        case FOUR_TOKEN:
          val = token;
          break;
        case CATEGORY1_TOKEN:
          val = CAT1_MIN_VAL + read_coeff(cat1_prob, 1, r);
          break;
        case CATEGORY2_TOKEN:
          val = CAT2_MIN_VAL + read_coeff(cat2_prob, 2, r);
          break;
        case CATEGORY3_TOKEN:
          val = CAT3_MIN_VAL + read_coeff(cat3_prob, 3, r);
          break;
        case CATEGORY4_TOKEN:
          val = CAT4_MIN_VAL + read_coeff(cat4_prob, 4, r);
          break;
        case CATEGORY5_TOKEN:
          val = CAT5_MIN_VAL + read_coeff(cat5_prob, 5, r);
          break;
        case CATEGORY6_TOKEN:
#if CONFIG_VP9_HIGHBITDEPTH
          switch (cm->bit_depth) {
            case VPX_BITS_8:
              val = CAT6_MIN_VAL + read_coeff(cat6_prob, 14, r);
              break;
            case VPX_BITS_10:
              val = CAT6_MIN_VAL + read_coeff(cat6_prob, 16, r);
              break;
            case VPX_BITS_12:
              val = CAT6_MIN_VAL + read_coeff(cat6_prob, 18, r);
              break;
            default:
              assert(0);
              return -1;
          }
#else
          val = CAT6_MIN_VAL + read_coeff(cat6_prob, 14, r);
#endif
          break;
      }
    }
    v = (val * dqv) >> dq_shift;
#if CONFIG_COEFFICIENT_RANGE_CHECKING
#if CONFIG_VP9_HIGHBITDEPTH
    dqcoeff[scan[c]] = highbd_check_range((vp9_read_bit(r) ? -v : v),
                                          cm->bit_depth);
#else
    dqcoeff[scan[c]] = check_range(vp9_read_bit(r) ? -v : v);
#endif  // CONFIG_VP9_HIGHBITDEPTH
#else
    dqcoeff[scan[c]] = vp9_read_bit(r) ? -v : v;
#endif  // CONFIG_COEFFICIENT_RANGE_CHECKING
    token_cache[scan[c]] = vp9_pt_energy_class[token];
    ++c;
    ctx = get_coef_context(nb, token_cache, c);
    dqv = dq[1];
  }

  return c;
}
Ejemplo n.º 6
0
void *qt_hash_put_helper(qt_dictionary *h,
                         qt_key_t       key,
                         void          *value,
                         int            put_choice)
{
    uint64_t lkey = (uint64_t)(uintptr_t)(h->op_hash(key));

    HASH_KEY(lkey);
    assert(h);

    unsigned         bucket    = BASE_SPINE_BUCKET(lkey);
    hash_entry      *e         = qt_malloc(sizeof(hash_entry));   // XXX: should be from a memory pool
    spine_element_t *child_id  = &(h->base[bucket]);
    spine_element_t  child_val = h->base[bucket];
    spine_element_t *cur_id    = NULL;
    spine_t         *cur_spine = NULL;
    unsigned         depth     = 0;

    assert(e != NULL);
    e->hashed_key = lkey;
    e->key        = key;
    e->value      = value;
    e->next       = NULL;
    hash_entry *crt;
    do {
        if (child_val.e == NULL) {
            // place the entry in the hash
            if ((child_val.e = CAS(&(child_id->e), NULL, e)) == NULL) {
                // put success: no potential colliding element was present
                return value;
            }
        } else if (SPINE_PTR_TEST(child_val)) {
            INCREMENT_COUNT(child_id, child_val);
            if (cur_id) {
                DECREMENT_COUNT(cur_id);
            }
            cur_id    = child_id;
            cur_spine = SPINE_PTR(h, child_val);
            depth++;
            assert(depth <= 11); // otherwise, something has gone horribly wrong
            bucket    = SPINE_BUCKET(lkey, depth);
            child_id  = &cur_spine->elements[bucket];
            child_val = cur_spine->elements[bucket];
        } else if (child_val.e->hashed_key != lkey) {
            // upgrade to a spine
            spine_element_t newspine, cur;
            spine_t        *realspine;
            unsigned        bucket1 = SPINE_BUCKET(child_val.e->hashed_key, depth + 1);
            unsigned        bucket2 = SPINE_BUCKET(lkey, depth + 1);

            newspine.s.id                = allocate_spine(h, &realspine);
            realspine->parent            = cur_id;
            realspine->elements[bucket1] = child_val;

            if (bucket1 != bucket2) {            // both elements will be in the new spine
                newspine.s.ctr = SPINE_COUNT(2); // contains 2 elements

                realspine->elements[bucket2].e = e;

                if ((cur.e = CAS(&(child_id->e), child_val.e, newspine.e)) == child_val.e) {
                    // success!
                    if (cur_id) {
                        DECREMENT_COUNT(cur_id);
                    }
                    return value;
                } else {
                    child_val = cur;
                    deallocate_spine(h, newspine.s.id);
                }
            } else {                             // collision in the new spine (unusual; will use unnecessary CAS)
                newspine.s.ctr = SPINE_COUNT(1); // contains 1 element (oldval)

                if ((cur.e = CAS(&(child_id->e), child_val.e, newspine.e)) == child_val.e) {
                    // success
                    continue;
                } else {
                    child_val = cur;
                    deallocate_spine(h, newspine.s.id);
                }
            }
        } else {
            // use the real user-equals operation to differentiate subcases
            // it is possible that the element is there or it may not be there
            hash_entry *head;
            do {
                head    = child_id->e;
                e->next = head;
                crt     = head;
                // find the entry, if it is in the list
                while (crt) {
                    if (h->op_equals(crt->key, key)) {
                        // already exists

                        if (put_choice != PUT_IF_ABSENT) {
                            void **crt_val_adr = &(crt->value);
                            void  *crt_val     = crt->value;
                            while((qthread_cas_ptr(crt_val_adr, \
                                                   crt_val, value)) != crt_val ) {
                                crt_val = crt->value;
                            }
                        }

                        if (cur_id) { DECREMENT_COUNT(cur_id); }
                        return crt->value;
                    }
                    crt = crt->next;
                }
                // and try to insert it at the head of the list;
                // if the list changed, redu the work
            } while (qthread_cas_ptr(&(child_id->e), head, e) != head);
            // printf("IN put: (%s-%s)\n", child_id->e->key, child_id->e->value);
            // if (e->next !=NULL)
            //	printf("next key is %s and value %s\n", e->next->key, e->next->value);
            return e->value;
        }
    } while (1);
}