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