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| /******************************************************************************
| *
| * Copyright (C) 2015 The Android Open Source Project
| *
| * Licensed under the Apache License, Version 2.0 (the "License");
| * you may not use this file except in compliance with the License.
| * You may obtain a copy of the License at:
| *
| * http://www.apache.org/licenses/LICENSE-2.0
| *
| * Unless required by applicable law or agreed to in writing, software
| * distributed under the License is distributed on an "AS IS" BASIS,
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
| * See the License for the specific language governing permissions and
| * limitations under the License.
| *
| *****************************************************************************
| * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
| */
| /**
| *******************************************************************************
| * @file
| * ih264_deblk_tables.c
| *
| * @brief
| * Contains tables used for deblocking
| *
| * @author
| * Ittiam
| *
| * @par List of Tables:
| * - guc_ih264_qp_scale_cr[]
| * - guc_ih264_alpha_table[]
| * - guc_ih264_beta_table[]
| * - guc_ih264_clip_table[][]
| *
| * @remarks
| * None
| *
| *******************************************************************************
| */
|
| /*****************************************************************************/
| /* File Includes */
| /*****************************************************************************/
|
| /* System include files */
| #include <stdio.h>
|
| /* User include files */
| #include "ih264_typedefs.h"
| #include "ih264_deblk_tables.h"
|
| /*****************************************************************************/
| /* Extern global definitions */
| /*****************************************************************************/
|
| /**
| ******************************************************************************
| * @brief alpha & beta tables for deblocking
| * input : indexA [0-51] & indexB [0-51]
| * output : alpha & beta
| *
| * @remarks Table 8-16 in H264 Specification,
| * Derivation of offset dependent threshold variables
| * alpha and beta from indexA and indexB
| ******************************************************************************
| */
| const UWORD8 gu1_ih264_alpha_table[52] =
| {
| /* indexA :: 0-51 inclusive */
| 0, 0, 0, 0, 0, 0, 0, 0,
| 0, 0, 0, 0, 0, 0, 0, 0,
| 4, 4, 5, 6, 7, 8, 9, 10,
| 12, 13, 15, 17, 20, 22, 25, 28,
| 32, 36, 40, 45, 50, 56, 63, 71,
| 80, 90, 101, 113, 127, 144, 162, 182,
| 203, 226, 255, 255,
| };
|
| const UWORD8 gu1_ih264_beta_table[52] =
| {
| /* indexB :: 0-51 inclusive */
| 0, 0, 0, 0, 0, 0, 0, 0,
| 0, 0, 0, 0, 0, 0, 0, 0,
| 2, 2, 2, 3, 3, 3, 3, 4,
| 4, 4, 6, 6, 7, 7, 8, 8,
| 9, 9, 10, 10, 11, 11, 12, 12,
| 13, 13, 14, 14, 15, 15, 16, 16,
| 17, 17, 18, 18,
| };
|
| /**
| ******************************************************************************
| * @brief t'C0 table for deblocking
| * input : indexA [0-51] and bS [1,3]
| * output : t'C0
| *
| * @remarks Table 8-17 in H264 Specification,
| * Value of variable t'C0 as a function of indexA and bS
| ******************************************************************************
| */
| const UWORD8 gu1_ih264_clip_table[52][4] =
| {
| /* indexA :: 0-51 inclusive */
| { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0},
| { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0},
| { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0},
| { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0}, { 0, 0, 0, 0},
| { 0, 0, 0, 0}, { 0, 0, 0, 1}, { 0, 0, 0, 1}, { 0, 0, 0, 1},
| { 0, 0, 0, 1}, { 0, 0, 1, 1}, { 0, 0, 1, 1}, { 0, 1, 1, 1},
| { 0, 1, 1, 1}, { 0, 1, 1, 1}, { 0, 1, 1, 1}, { 0, 1, 1, 2},
| { 0, 1, 1, 2}, { 0, 1, 1, 2}, { 0, 1, 1, 2}, { 0, 1, 2, 3},
| { 0, 1, 2, 3}, { 0, 2, 2, 3}, { 0, 2, 2, 4}, { 0, 2, 3, 4},
| { 0, 2, 3, 4}, { 0, 3, 3, 5}, { 0, 3, 4, 6}, { 0, 3, 4, 6},
| { 0, 4, 5, 7}, { 0, 4, 5, 8}, { 0, 4, 6, 9}, { 0, 5, 7,10},
| { 0, 6, 8,11}, { 0, 6, 8,13}, { 0, 7,10,14}, { 0, 8,11,16},
| { 0, 9,12,18}, { 0,10,13,20}, { 0,11,15,23}, { 0,13,17,25},
| };
|
|
