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.h 24 * 25 * @brief 26 * This file contains declarations of tables used for deblocking 27 * 28 * @author 29 * Ittiam 30 * 31 * @par List of Functions: 32 * 33 * @remarks 34 * None 35 * 36 ******************************************************************************* 37 */ 38 39 #ifndef IH264_DEBLK_TABLES_H_ 40 #define IH264_DEBLK_TABLES_H_ 41 42 /*****************************************************************************/ 43 /* Extern global declarations */ 44 /*****************************************************************************/ 45 46 /** 47 ****************************************************************************** 48 * @brief alpha & beta tables for deblocking 49 * input : indexA [0-51] & indexB [0-51] 50 * output : alpha & beta 51 * 52 * @remarks Table 8-16 in H264 Specification, 53 * Derivation of offset dependent threshold variables 54 * alpha and beta from indexA and indexB 55 ****************************************************************************** 56 */ 57 extern const UWORD8 gu1_ih264_alpha_table[52]; 58 59 extern const UWORD8 gu1_ih264_beta_table[52]; 60 61 /** 62 ****************************************************************************** 63 * @brief t'C0 table for deblocking 64 * input : indexA [0-51] and bS [1,3] 65 * output : t'C0 66 * 67 * @remarks Table 8-17 in H264 Specification, 68 * Value of variable t'C0 as a function of indexA and bS 69 ****************************************************************************** 70 */ 71 extern const UWORD8 gu1_ih264_clip_table[52][4]; 72 73 #endif /* IH264_DEBLK_TABLES_H_ */ 74
