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111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/******************************************************************************
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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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* @file
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* ih264_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 _IH264_MACROS_H_
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#define _IH264_MACROS_H_
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/*****************************************************************************/
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/* Function Macros */
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/*****************************************************************************/
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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 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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/**
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******************************************************************************
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* @brief Min, Max
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******************************************************************************
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*/
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#define MAX(a,b) ((a > b)?(a):(b))
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#define MIN(a,b) ((a < b)?(a):(b))
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#define MIN3(a,b,c) ((a) < (b)) ? (((a) < (c)) ? (a) : (c)) : (((b) < (c)) ? (b) : (c))
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#define MAX3(a,b,c) ((a) > (b)) ? (((a) > (c)) ? (a) : (c)) : (((b) > (c)) ? (b) : (c))
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/**
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******************************************************************************
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* @brief Div, Mod
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******************************************************************************
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*/
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#define MOD(x,y) ((x)%(y))
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#define DIV(x,y) ((x)/(y))
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/**
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******************************************************************************
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* @brief Clip
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******************************************************************************
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*/
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#define CLIP3(miny, maxy, y) (((y) < (miny))?(miny):(((y) > (maxy))?(maxy):(y)))
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/**
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******************************************************************************
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* @brief True, False
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******************************************************************************
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*/
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#define BOOLEAN(x) (!!(x))
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/**
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******************************************************************************
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* @brief Frequently used multiplications x2. x3, and x4
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******************************************************************************
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*/
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#define X2(a) ((a) << 1)
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#define X3(a) (((a) << 1) + (a))
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#define X4(a) ((a) << 2)
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/**
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******************************************************************************
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* @brief Misc
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******************************************************************************
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*/
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#define ABS(x) ((x) < 0 ? (-(x)) : (x))
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#define SIGNXY(x,y) (((y) < 0) ? (-1 * (x)) : (x))
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#define SIGN(x) (((x) >= 0) ? (((x) > 0) ? 1 : 0) : -1)
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#define RESET_BIT(x, pos) (x) = (x) & ~(1 << pos);
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#define SET_BIT(x, pos) (x) = (x) | (1 << pos);
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#define GET_BIT(x, pos) ((x) >> (pos)) & 0x1
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#define INSERT_BIT(x, pos, bit) { RESET_BIT(x, pos); (x) = (x) | (bit << pos); }
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#endif /*_IH264_MACROS_H_*/
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