Coverage Report

Created: 2025-07-12 07:02

/src/libxaac/decoder/ixheaacd_ps_bitdec.c
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/******************************************************************************
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 *                                                                            *
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 * Copyright (C) 2018 The Android Open Source Project
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 *
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 * Licensed under the Apache License, Version 2.0 (the "License");
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 * you may not use this file except in compliance with the License.
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 * You may obtain a copy of the License at:
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 *
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 * http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 *
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 *****************************************************************************
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 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#include <string.h>
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#include "ixheaacd_sbr_common.h"
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#include "ixheaac_type_def.h"
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#include "ixheaac_constants.h"
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#include "ixheaac_basic_ops32.h"
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#include "ixheaac_basic_ops16.h"
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#include "ixheaac_basic_ops40.h"
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#include "ixheaac_basic_ops.h"
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#include "ixheaac_basic_op.h"
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#include "ixheaacd_intrinsics.h"
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#include "ixheaacd_bitbuffer.h"
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#include "ixheaacd_sbrdecsettings.h"
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#include "ixheaacd_sbr_scale.h"
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#include "ixheaacd_lpp_tran.h"
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#include "ixheaacd_env_extr_part.h"
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#include "ixheaacd_sbr_rom.h"
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#include "ixheaacd_hybrid.h"
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#include "ixheaacd_ps_dec.h"
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#include "ixheaacd_env_extr.h"
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#include "ixheaacd_ps_bitdec.h"
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const WORD16 ixheaacd_num_bands[3] = {10, 20, 34};
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6.50k
static WORD32 ixheaacd_clamp(WORD32 i, WORD16 min, WORD16 max) {
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6.50k
  WORD32 result = i;
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50
6.50k
  if (i < min) {
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68
    result = min;
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6.43k
  } else {
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6.43k
    if (i > max) {
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135
      result = max;
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135
    }
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6.43k
  }
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6.50k
  return result;
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6.50k
}
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48.2k
WORD16 ixheaacd_divideby2(WORD op) {
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48.2k
  FLAG sign = (op < 0);
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48.2k
  if (sign) {
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0
    op = -(op);
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0
  }
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48.2k
  op = (op >> 1);
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48.2k
  if (sign) {
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0
    op = -op;
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0
  }
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48.2k
  return (WORD16)op;
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48.2k
}
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17.5k
WORD16 ixheaacd_divideby3(WORD op) {
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17.5k
  WORD16 temp, ret;
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17.5k
  FLAG sign = (op < 0);
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17.5k
  if (sign) {
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0
    op = -(op);
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0
  }
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17.5k
  temp = (WORD16)(op << 2);
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17.5k
  temp = ixheaac_mult16_shl(temp, 0x2aab);
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17.5k
  ret = (temp >> 2);
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17.5k
  if (sign) {
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0
    ret = -(ret);
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0
  }
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17.5k
  return (WORD16)ret;
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17.5k
}
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13.1k
VOID ixheaacd_decode_ps_data(ia_ps_dec_struct *ptr_ps_dec, WORD32 frame_size) {
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13.1k
  WORD e, i, temp;
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13.1k
  WORD16 iid_mode = (WORD16)((ptr_ps_dec->iid_mode) ? 1 : 2);
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13.1k
  WORD16 icc_mode = (WORD16)((ptr_ps_dec->icc_mode) ? 1 : 2);
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13.1k
  WORD16 num_iid_levels =
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13.1k
      (WORD16)(ptr_ps_dec->iid_quant ? NUM_IID_LEVELS_FINE : NUM_IID_LEVELS);
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13.1k
  WORD32 max_num_columns;
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13.1k
  if (frame_size == 960)
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0
    max_num_columns = MAX_NUM_COLUMNS_960;
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13.1k
  else
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13.1k
    max_num_columns = MAX_NUM_COLUMNS;
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13.1k
  if (!ptr_ps_dec->ps_data_present) {
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10.9k
    ptr_ps_dec->num_env = 0;
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10.9k
  }
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15.3k
  for (e = 0; e < ptr_ps_dec->num_env; e++) {
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2.26k
    WORD16 *p_iid_par_prev;
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2.26k
    WORD16 *p_icc_par_prev;
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2.26k
    if (e == 0) {
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2.13k
      p_iid_par_prev = ptr_ps_dec->iid_par_prev;
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2.13k
      p_icc_par_prev = ptr_ps_dec->icc_par_prev;
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2.13k
    } else {
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      p_iid_par_prev = ptr_ps_dec->iid_par_table[e - 1];
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122
      p_icc_par_prev = ptr_ps_dec->icc_par_table[e - 1];
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122
    }
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2.26k
    if (ptr_ps_dec->enable_iid) {
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18
      if (ptr_ps_dec->iid_dt[e]) {
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165
        for (i = 0; i < ixheaacd_num_bands[ptr_ps_dec->iid_mode]; i++) {
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150
          temp =
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150
              ixheaac_add16(*p_iid_par_prev, ptr_ps_dec->iid_par_table[e][i]);
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          ptr_ps_dec->iid_par_table[e][i] = ixheaacd_clamp(
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150
              temp, ixheaac_negate16(num_iid_levels), num_iid_levels);
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150
          p_iid_par_prev += iid_mode;
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150
        }
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15
      } else {
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3
        ptr_ps_dec->iid_par_table[e][0] =
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3
            ixheaacd_clamp(ptr_ps_dec->iid_par_table[e][0],
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3
                           ixheaac_negate16(num_iid_levels), num_iid_levels);
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30
        for (i = 1; i < ixheaacd_num_bands[ptr_ps_dec->iid_mode]; i++) {
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27
          temp = ixheaac_add16(ptr_ps_dec->iid_par_table[e][i - 1],
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27
                                ptr_ps_dec->iid_par_table[e][i]);
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          ptr_ps_dec->iid_par_table[e][i] = ixheaacd_clamp(
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27
              temp, ixheaac_negate16(num_iid_levels), num_iid_levels);
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27
        }
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3
      }
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2.24k
    } else {
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2.24k
      memset(ptr_ps_dec->iid_par_table[e], 0,
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2.24k
             sizeof(WORD16) * ixheaacd_num_bands[ptr_ps_dec->iid_mode]);
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2.24k
    }
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2.26k
    if (iid_mode == 2) {
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2.12k
      for (i = (ixheaacd_num_bands[ptr_ps_dec->iid_mode] * iid_mode - 1);
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42.4k
           i != 0; i--) {
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40.2k
        ptr_ps_dec->iid_par_table[e][i] =
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40.2k
            ptr_ps_dec->iid_par_table[e][ixheaac_shr32(i, 1)];
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40.2k
      }
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2.12k
    }
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2.26k
    if (ptr_ps_dec->enable_icc) {
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316
      if (ptr_ps_dec->icc_dt[e]) {
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6.61k
        for (i = 0; i < ixheaacd_num_bands[ptr_ps_dec->icc_mode]; i++) {
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6.30k
          temp =
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6.30k
              ixheaac_add16(*p_icc_par_prev, ptr_ps_dec->icc_par_table[e][i]);
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6.30k
          ptr_ps_dec->icc_par_table[e][i] =
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6.30k
              ixheaacd_clamp(temp, 0, (WORD16)(NUM_ICC_LEVELS - 1));
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6.30k
          p_icc_par_prev += icc_mode;
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6.30k
        }
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315
      } else {
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1
        ptr_ps_dec->icc_par_table[e][0] = ixheaacd_clamp(
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1
            ptr_ps_dec->icc_par_table[e][0], 0, (WORD16)(NUM_ICC_LEVELS - 1));
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20
        for (i = 1; i < ixheaacd_num_bands[ptr_ps_dec->icc_mode]; i++) {
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19
          temp = ixheaac_add16(ptr_ps_dec->icc_par_table[e][i - 1],
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19
                                ptr_ps_dec->icc_par_table[e][i]);
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19
          ptr_ps_dec->icc_par_table[e][i] =
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19
              ixheaacd_clamp(temp, 0, (WORD16)(NUM_ICC_LEVELS - 1));
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19
        }
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1
      }
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1.94k
    } else {
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1.94k
      memset(ptr_ps_dec->icc_par_table[e], 0,
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1.94k
             sizeof(WORD16) * ixheaacd_num_bands[ptr_ps_dec->icc_mode]);
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1.94k
    }
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2.26k
    if (icc_mode == 2) {
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1.92k
      for (i = (ixheaacd_num_bands[ptr_ps_dec->icc_mode] * icc_mode - 1);
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38.5k
           i != 0; i--) {
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36.6k
        ptr_ps_dec->icc_par_table[e][i] =
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36.6k
            ptr_ps_dec->icc_par_table[e][ixheaac_shr32(i, 1)];
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36.6k
      }
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1.92k
    }
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2.26k
  }
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13.1k
  if (ptr_ps_dec->num_env == 0) {
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10.9k
    ptr_ps_dec->num_env = 1;
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10.9k
    if (ptr_ps_dec->enable_iid) {
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3.75k
      memcpy(ptr_ps_dec->iid_par_table[0], ptr_ps_dec->iid_par_prev,
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3.75k
             sizeof(WORD16) * NUM_BANDS_FINE);
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7.23k
    } else {
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7.23k
      memset(ptr_ps_dec->iid_par_table[0], 0, sizeof(WORD16) * NUM_BANDS_FINE);
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7.23k
    }
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10.9k
    if (ptr_ps_dec->enable_icc) {
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4.94k
      memcpy(ptr_ps_dec->icc_par_table[0], ptr_ps_dec->icc_par_prev,
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4.94k
             sizeof(WORD16) * NUM_BANDS_FINE);
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6.04k
    } else {
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6.04k
      memset(ptr_ps_dec->icc_par_table[0], 0, sizeof(WORD16) * NUM_BANDS_FINE);
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6.04k
    }
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10.9k
  }
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13.1k
  memcpy(ptr_ps_dec->iid_par_prev,
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13.1k
         ptr_ps_dec->iid_par_table[ptr_ps_dec->num_env - 1],
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13.1k
         sizeof(WORD16) * NUM_BANDS_FINE);
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13.1k
  memcpy(ptr_ps_dec->icc_par_prev,
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13.1k
         ptr_ps_dec->icc_par_table[ptr_ps_dec->num_env - 1],
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13.1k
         sizeof(WORD16) * NUM_BANDS_FINE);
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219
13.1k
  ptr_ps_dec->ps_data_present = 0;
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221
13.1k
  if (ptr_ps_dec->frame_class == 0) {
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12.8k
    WORD env_count;
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12.8k
    WORD16 shift = 0;
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225
12.8k
    switch (ptr_ps_dec->num_env) {
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12.8k
      case 1:
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12.8k
        shift = 0;
228
12.8k
        break;
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2
      case 2:
230
2
        shift = 1;
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2
        break;
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7
      case 4:
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7
        shift = 2;
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7
        break;
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12.8k
    }
236
12.8k
    ptr_ps_dec->border_position[0] = 0;
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12.8k
    env_count = 0;
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12.8k
    for (e = 1; e < ptr_ps_dec->num_env; e++) {
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23
      env_count = add_d(env_count, max_num_columns);
241
23
      ptr_ps_dec->border_position[e] = (WORD16)(env_count >> shift);
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23
    }
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12.8k
    ptr_ps_dec->border_position[ptr_ps_dec->num_env] = max_num_columns;
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12.8k
  } else {
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268
    ptr_ps_dec->border_position[0] = 0;
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247
268
    if (ptr_ps_dec->border_position[ptr_ps_dec->num_env] < max_num_columns) {
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266
      ptr_ps_dec->num_env++;
249
266
      ptr_ps_dec->border_position[ptr_ps_dec->num_env] = max_num_columns;
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251
266
      memcpy(ptr_ps_dec->iid_par_table[ptr_ps_dec->num_env - 1],
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266
             ptr_ps_dec->iid_par_table[ptr_ps_dec->num_env - 2],
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266
             sizeof(WORD16) * NUM_BANDS_FINE);
254
255
266
      memcpy(ptr_ps_dec->icc_par_table[ptr_ps_dec->num_env - 1],
256
266
             ptr_ps_dec->icc_par_table[ptr_ps_dec->num_env - 2],
257
266
             sizeof(WORD16) * NUM_BANDS_FINE);
258
266
    }
259
260
633
    for (e = 1; e < ptr_ps_dec->num_env; e++) {
261
365
      WORD threshold;
262
365
      threshold = sub_d(max_num_columns, sub_d(ptr_ps_dec->num_env, e));
263
264
365
      if (ptr_ps_dec->border_position[e] > threshold) {
265
8
        ptr_ps_dec->border_position[e] = threshold;
266
357
      } else {
267
357
        threshold = add_d(ptr_ps_dec->border_position[e - 1], 1);
268
269
357
        if (ptr_ps_dec->border_position[e] < threshold) {
270
98
          ptr_ps_dec->border_position[e] = threshold;
271
98
        }
272
357
      }
273
365
    }
274
268
  }
275
276
26.6k
  for (e = 0; e < ptr_ps_dec->num_env; e++) {
277
13.5k
    if (ptr_ps_dec->iid_mode == 2)
278
4.38k
      ixheaacd_map_34_params_to_20(ptr_ps_dec->iid_par_table[e]);
279
280
13.5k
    if (ptr_ps_dec->icc_mode == 2)
281
1
      ixheaacd_map_34_params_to_20(ptr_ps_dec->icc_par_table[e]);
282
13.5k
  }
283
13.1k
}