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      1 /******************************************************************************
      2 *
      3 * Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
      4 *
      5 * Licensed under the Apache License, Version 2.0 (the "License");
      6 * you may not use this file except in compliance with the License.
      7 * You may obtain a copy of the License at:
      8 *
      9 * http://www.apache.org/licenses/LICENSE-2.0
     10 *
     11 * Unless required by applicable law or agreed to in writing, software
     12 * distributed under the License is distributed on an "AS IS" BASIS,
     13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 * See the License for the specific language governing permissions and
     15 * limitations under the License.
     16 *
     17 ******************************************************************************/
     18 /**
     19 *******************************************************************************
     20 * @file
     21 *  ihevc_deblk_tables.c
     22 *
     23 * @brief
     24 *  Contains tables used for deblock filters
     25 *
     26 * @author
     27 *  Srinivas T
     28 *
     29 * @par List of Tables:
     30 * gai4_ihevc_beta_table
     31 * gai4_ihevc_tc_table
     32 * gai4_ihevc_qp_table
     33 *
     34 * @remarks
     35 *  None
     36 *
     37 *******************************************************************************
     38 */
     39 #include "ihevc_typedefs.h"
     40 #include "ihevc_deblk_tables.h"
     41 
     42 /**
     43  * Beta table for deblocking
     44  * Table 8-10 - Derivation of threshold variables beta and tc from input Q
     45  */
     46 const WORD32 gai4_ihevc_beta_table[52] =
     47 {    0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
     48      0,  0,  0,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15,
     49     16, 17, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38,
     50     40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64
     51 };
     52 
     53 
     54 /**
     55  * Tc table for deblocking
     56  * Table 8-10 - Derivation of threshold variables beta and tc from input Q
     57  */
     58 const WORD32 gai4_ihevc_tc_table[54] =
     59 {
     60      0,  0,  0,  0,  0,  0,  0,  0,  0,
     61      0,  0,  0,  0,  0,  0,  0,  0,  0,
     62      1,  1,  1,  1,  1,  1,  1,  1,  1,
     63      2,  2,  2,  2,  3,  3,  3,  3,  4,
     64      4,  4,  5,  5,  6,  6,  7,  8,  9,
     65     10, 11, 13, 14, 16, 18, 20, 22, 24
     66 };
     67 
     68 /**
     69  * QP table for deblocking
     70  * Table 8-9  Specification of QPC as a function of qPi
     71  */
     72 const WORD32 gai4_ihevc_qp_table[58] =
     73 {
     74      0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, 14, 15, 16,
     75     17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 29, 30, 31, 32,
     76     33, 33, 34, 34, 35, 35, 36, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44,
     77     45, 46, 47, 48, 49, 50, 51
     78 };
     79