/******************************************************************************
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*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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/**
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*******************************************************************************
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* @file
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* ideint_defs.h
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*
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* @brief
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* Contains deinterlacer definitions
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*
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* @author
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* Ittiam
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*
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* @par List of Functions:
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*
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* @remarks
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* None
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*
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*******************************************************************************
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*/
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#ifndef __IDEINT_DEFS_H__
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#define __IDEINT_DEFS_H__
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#define ADJ_SAD_THRESH (6 * (FLD_BLK_SIZE * 2)) // *2 : 2 way collapsing (col+row)
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#define RSUM_CSUM_THRESH_PER_PEL 5//0
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/* Block dimensions. All the decisions (which method to be used) are */
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/* made on block basis. The blk level decisions help us in */
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/* reducing the time-complexity of the algorithm. */
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#define BLK_WD_SHIFT 3
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#define BLK_HT_SHIFT 3
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#define BLK_WD (1 << BLK_WD_SHIFT )
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#define BLK_HT (1 << BLK_HT_SHIFT)
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#define FLD_BLK_SIZE (BLK_WD * (BLK_HT >> 1))
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/* Inside the algorithm, the block itself is divided amongst further */
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/* smaller blocks. */
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#define SUB_BLK_WD (BLK_WD >> 1)
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#define SUB_BLK_HT (BLK_HT >> 1) /* field dimensions. */
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#define FLD_SUB_BLK_SIZE (SUB_BLK_WD * SUB_BLK_HT)
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/*****************************************************************************/
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/* Stationarity check threshold, used in deciding when to weave. */
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/*****************************************************************************/
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#define ST_THRESH ((15 * FLD_BLK_SIZE) >> 1)
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#define MOD_IDX_ST_NUM 3
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#define MOD_IDX_ST_SHIFT 1
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#define VAR_AVG_LUMA 735
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#define VAR_AVG_CHROMA 38
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/*****************************************************************************/
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/* Threshold to choose the fallback method out of Bob and 3-field Kernel */
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/* method. */
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/*****************************************************************************/
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#define FB_THRESH (32 * FLD_BLK_SIZE)
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#define MOD_IDX_FB 4
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#define EDGE_BIAS_0 5
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#define EDGE_BIAS_1 7
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/*****************************************************************************/
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/* Adjacent correlation bias, used in biasing the adjacent correlation over */
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/* the alternate one, while comparing the two; in the combing-artifact-check */
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/* function. */
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/*****************************************************************************/
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#define SAD_BIAS_ADDITIVE (FLD_SUB_BLK_SIZE >> 1)
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/*****************************************************************************/
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/* Mult bias is 1.125 = 9/8. Multiplication by this number is done in two */
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/* stpes, first multiplication by 9 and then shift by 3. */
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/*****************************************************************************/
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#define SAD_BIAS_MULT_SHIFT 3
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/*****************************************************************************/
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/* row_sum threshold, used for making the combing artifact check more robust */
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/* against the noise (e.g. ringing) by rejecting insignificant pixel */
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/* difference across two adjacent rows; in the combing artifact check */
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/* function. */
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/*****************************************************************************/
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#define RSUM_CSUM_THRESH (RSUM_CSUM_THRESH_PER_PEL * SUB_BLK_WD)
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/*****************************************************************************/
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/* The 3-field filter is of type [-k 2k -k, 0.5 0.5, -k 2k -k], where k is */
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/* the COEFF_THREE_FIELD defined below. */
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/*****************************************************************************/
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#define COEFF_THREE_FIELD 13
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/*****************************************************************************/
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/* Definitions used by the variance calculations module. */
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/*****************************************************************************/
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#define SQR_SUB_BLK_SZ (FLD_BLK_SIZE * FLD_BLK_SIZE)
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#define SUB_BLK_SZ_SHIFT 5 /* 2^5 = 32 */
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#define SQR_SUB_BLK_SZ_SHIFT (SUB_BLK_SZ_SHIFT << 1) /* 2^10 = 1024 = 32 * 32 */
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#endif /* __IDEINT_DEFS_H__ */
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