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94 lines
3.3 KiB
94 lines
3.3 KiB
/******************************************************************************
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*
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* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore
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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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/**
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*******************************************************************************
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* @file
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* ihevc_macros.h
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*
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* @brief
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* Macro definitions used in the codec
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*
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* @author
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* Ittiam
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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 _IHEVC_MACROS_H_
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#define _IHEVC_MACROS_H_
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#define RETURN_IF(cond, retval) if(cond) {return (retval);}
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#define UNUSED(x) ((void)(x))
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#define CLIP3(x, min, max) (((x) > (max)) ? (max) :(((x) < (min))? (min):(x)))
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#define MAX(x,y) (((x) > (y)) ? (x) :(y))
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#define MIN(x,y) (((x) < (y)) ? (x) :(y))
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#define SIGN(x) ((x) >= 0 ? ((x)>0 ? 1: 0) : -1)
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#define ABS(x) ((((WORD32)(x)) > 0) ? (x) : -(x))
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#define ALIGN1024(x) ((((x) + 1023) >> 10) << 10)
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#define ALIGN256(x) ((((x) + 255) >> 8) << 8)
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#define ALIGN128(x) ((((x) + 127) >> 7) << 7)
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#define ALIGN64(x) ((((x) + 63) >> 6) << 6)
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#define ALIGN32(x) ((((x) + 31) >> 5) << 5)
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#define ALIGN16(x) ((((x) + 15) >> 4) << 4)
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#define ALIGN8(x) ((((x) + 7) >> 3) << 3)
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#define ALIGN4(x) ((((x) + 3) >> 2) << 2)
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#define ALIGN2(x) ((((x) + 1) >> 1) << 1)
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#define ALIGN_POW2(ptr,align) ((((WORD32)ptr)+align-1)&(~(align-1)))
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/** Sets x bits to '1' starting from MSB */
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#define MSB_ONES(x) ((UWORD32)0xFFFFFFFF << (32 - (x)))
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/** Generates a pattern of x number of '01' in binary starting from MSB */
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#define DUP_MSB_01(x) ((UWORD32)0x55555555 << (32 - ((x) * 2)))
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/** Generates a pattern of x number of '10' in binary starting from MSB */
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#define DUP_MSB_10(x) ((UWORD32)0xAAAAAAAA << (32 - ((x) * 2)))
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/** Generates a pattern of x number of '11' in binary starting from MSB */
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#define DUP_MSB_11(x) ((UWORD32)0xFFFFFFFF << (32 - ((x) * 2)))
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/** Sets x bits to '1' starting from LSB */
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#define LSB_ONES(x) ((UWORD32)0xFFFFFFFF >> (32 - (x)))
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/** Generates a pattern of x number of '01' in binary starting from LSB */
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#define DUP_LSB_01(x) ((UWORD32)0x55555555 >> (32 - ((x) * 2)))
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/** Generates a pattern of x number of '10' in binary starting from LSB */
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#define DUP_LSB_10(x) ((UWORD32)0xAAAAAAAA >> (32 - ((x) * 2)))
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/** Generates a pattern of x number of '11' in binary starting from LSB */
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#define DUP_LSB_11(x) ((UWORD32)0xFFFFFFFF >> (32 - ((x) * 2)))
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/** Sets the bit in given position to 1 */
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#define BITSET(x, pos) ((x) | (1 << (pos)))
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/** Swap two variables */
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#define SWAP(X,Y) \
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{ \
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(X) = (X) ^ (Y); \
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(Y) = (X) ^ (Y); \
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(X) = (X) ^ (Y); \
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}
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#endif /*_IHEVCD_MACROS_H_*/
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