1 /****************************************************************************** 2 * 3 * Copyright (C) 2015 The Android Open Source Project 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 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 /** 21 ******************************************************************************* 22 * @file 23 * ih264_deblk_tables.c 24 * 25 * @brief 26 * Contains tables used for deblocking 27 * 28 * @author 29 * Ittiam 30 * 31 * @par List of Tables: 32 * - guc_ih264_qp_scale_cr[] 33 * - guc_ih264_alpha_table[] 34 * - guc_ih264_beta_table[] 35 * - guc_ih264_clip_table[][] 36 * 37 * @remarks 38 * None 39 * 40 ******************************************************************************* 41 */ 42 43 /*****************************************************************************/ 44 /* File Includes */ 45 /*****************************************************************************/ 46 47 /* System include files */ 48 #include <stdio.h> 49 50 /* User include files */ 51 #include "ih264_typedefs.h" 52 #include "ih264_deblk_tables.h" 53 54 /*****************************************************************************/ 55 /* Extern global definitions */ 56 /*****************************************************************************/ 57 58 /** 59 ****************************************************************************** 60 * @brief alpha & beta tables for deblocking 61 * input : indexA [0-51] & indexB [0-51] 62 * output : alpha & beta 63 * 64 * @remarks Table 8-16 in H264 Specification, 65 * Derivation of offset dependent threshold variables 66 * alpha and beta from indexA and indexB 67 ****************************************************************************** 68 */ 69 const UWORD8 gu1_ih264_alpha_table[52] = 70 { 71 /* indexA :: 0-51 inclusive */ 72 0, 0, 0, 0, 0, 0, 0, 0, 73 0, 0, 0, 0, 0, 0, 0, 0, 74 4, 4, 5, 6, 7, 8, 9, 10, 75 12, 13, 15, 17, 20, 22, 25, 28, 76 32, 36, 40, 45, 50, 56, 63, 71, 77 80, 90, 101, 113, 127, 144, 162, 182, 78 203, 226, 255, 255, 79 }; 80 81 const UWORD8 gu1_ih264_beta_table[52] = 82 { 83 /* indexB :: 0-51 inclusive */ 84 0, 0, 0, 0, 0, 0, 0, 0, 85 0, 0, 0, 0, 0, 0, 0, 0, 86 2, 2, 2, 3, 3, 3, 3, 4, 87 4, 4, 6, 6, 7, 7, 8, 8, 88 9, 9, 10, 10, 11, 11, 12, 12, 89 13, 13, 14, 14, 15, 15, 16, 16, 90 17, 17, 18, 18, 91 }; 92 93 /** 94 ****************************************************************************** 95 * @brief t'C0 table for deblocking 96 * input : indexA [0-51] and bS [1,3] 97 * output : t'C0 98 * 99 * @remarks Table 8-17 in H264 Specification, 100 * Value of variable t'C0 as a function of indexA and bS 101 ****************************************************************************** 102 */ 103 const UWORD8 gu1_ih264_clip_table[52][4] = 104 { 105 /* indexA :: 0-51 inclusive */ 106 { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, 107 { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, 108 { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, 109 { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, 110 { 0, 0, 0, 0}, { 0, 0, 0, 1}, { 0, 0, 0, 1}, { 0, 0, 0, 1}, 111 { 0, 0, 0, 1}, { 0, 0, 1, 1}, { 0, 0, 1, 1}, { 0, 1, 1, 1}, 112 { 0, 1, 1, 1}, { 0, 1, 1, 1}, { 0, 1, 1, 1}, { 0, 1, 1, 2}, 113 { 0, 1, 1, 2}, { 0, 1, 1, 2}, { 0, 1, 1, 2}, { 0, 1, 2, 3}, 114 { 0, 1, 2, 3}, { 0, 2, 2, 3}, { 0, 2, 2, 4}, { 0, 2, 3, 4}, 115 { 0, 2, 3, 4}, { 0, 3, 3, 5}, { 0, 3, 4, 6}, { 0, 3, 4, 6}, 116 { 0, 4, 5, 7}, { 0, 4, 5, 8}, { 0, 4, 6, 9}, { 0, 5, 7,10}, 117 { 0, 6, 8,11}, { 0, 6, 8,13}, { 0, 7,10,14}, { 0, 8,11,16}, 118 { 0, 9,12,18}, { 0,10,13,20}, { 0,11,15,23}, { 0,13,17,25}, 119 }; 120
