blob: 3935dcbc2c21628c7778d033e60b54bb11eb3b4c [file] [log] [blame]
Hamsalekha S8d3d3032015-03-13 21:24:58 +05301/******************************************************************************
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 */
57extern const UWORD8 gu1_ih264_alpha_table[52];
58
59extern 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 */
71extern const UWORD8 gu1_ih264_clip_table[52][4];
72
73#endif /* IH264_DEBLK_TABLES_H_ */