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* ideint_defs.h 24* 25* @brief 26* Contains deinterlacer definitions 27* 28* @author 29* Ittiam 30* 31* @par List of Functions: 32* 33* @remarks 34* None 35* 36******************************************************************************* 37*/ 38 39#ifndef __IDEINT_DEFS_H__ 40#define __IDEINT_DEFS_H__ 41 42#define ADJ_SAD_THRESH (6 * (FLD_BLK_SIZE * 2)) // *2 : 2 way collapsing (col+row) 43 44#define RSUM_CSUM_THRESH_PER_PEL 5//0 45 46/* Block dimensions. All the decisions (which method to be used) are */ 47/* made on block basis. The blk level decisions help us in */ 48/* reducing the time-complexity of the algorithm. */ 49#define BLK_WD_SHIFT 3 50#define BLK_HT_SHIFT 3 51 52#define BLK_WD (1 << BLK_WD_SHIFT ) 53#define BLK_HT (1 << BLK_HT_SHIFT) 54 55#define FLD_BLK_SIZE (BLK_WD * (BLK_HT >> 1)) 56 57 58/* Inside the algorithm, the block itself is divided amongst further */ 59/* smaller blocks. */ 60#define SUB_BLK_WD (BLK_WD >> 1) 61#define SUB_BLK_HT (BLK_HT >> 1) /* field dimensions. */ 62 63#define FLD_SUB_BLK_SIZE (SUB_BLK_WD * SUB_BLK_HT) 64 65 66/*****************************************************************************/ 67/* Stationarity check threshold, used in deciding when to weave. */ 68/*****************************************************************************/ 69#define ST_THRESH ((15 * FLD_BLK_SIZE) >> 1) 70 71#define MOD_IDX_ST_NUM 3 72#define MOD_IDX_ST_SHIFT 1 73 74#define VAR_AVG_LUMA 735 75#define VAR_AVG_CHROMA 38 76 77/*****************************************************************************/ 78/* Threshold to choose the fallback method out of Bob and 3-field Kernel */ 79/* method. */ 80/*****************************************************************************/ 81#define FB_THRESH (32 * FLD_BLK_SIZE) 82 83#define MOD_IDX_FB 4 84 85 86#define EDGE_BIAS_0 5 87#define EDGE_BIAS_1 7 88 89/*****************************************************************************/ 90/* Adjacent correlation bias, used in biasing the adjacent correlation over */ 91/* the alternate one, while comparing the two; in the combing-artifact-check */ 92/* function. */ 93/*****************************************************************************/ 94#define SAD_BIAS_ADDITIVE (FLD_SUB_BLK_SIZE >> 1) 95 96/*****************************************************************************/ 97/* Mult bias is 1.125 = 9/8. Multiplication by this number is done in two */ 98/* stpes, first multiplication by 9 and then shift by 3. */ 99/*****************************************************************************/ 100#define SAD_BIAS_MULT_SHIFT 3 101 102/*****************************************************************************/ 103/* row_sum threshold, used for making the combing artifact check more robust */ 104/* against the noise (e.g. ringing) by rejecting insignificant pixel */ 105/* difference across two adjacent rows; in the combing artifact check */ 106/* function. */ 107/*****************************************************************************/ 108#define RSUM_CSUM_THRESH (RSUM_CSUM_THRESH_PER_PEL * SUB_BLK_WD) 109 110/*****************************************************************************/ 111/* The 3-field filter is of type [-k 2k -k, 0.5 0.5, -k 2k -k], where k is */ 112/* the COEFF_THREE_FIELD defined below. */ 113/*****************************************************************************/ 114#define COEFF_THREE_FIELD 13 115 116/*****************************************************************************/ 117/* Definitions used by the variance calculations module. */ 118/*****************************************************************************/ 119#define SQR_SUB_BLK_SZ (FLD_BLK_SIZE * FLD_BLK_SIZE) 120#define SUB_BLK_SZ_SHIFT 5 /* 2^5 = 32 */ 121#define SQR_SUB_BLK_SZ_SHIFT (SUB_BLK_SZ_SHIFT << 1) /* 2^10 = 1024 = 32 * 32 */ 122 123 124 125#endif /* __IDEINT_DEFS_H__ */ 126