1/****************************************************************************** 2* 3* Copyright (C) 2012 Ittiam Systems Pvt Ltd, Bangalore 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/** 19******************************************************************************* 20* @file 21* ihevc_macros.h 22* 23* @brief 24* Macro definitions used in the codec 25* 26* @author 27* Ittiam 28* 29* @remarks 30* None 31* 32******************************************************************************* 33*/ 34#ifndef _IHEVC_MACROS_H_ 35#define _IHEVC_MACROS_H_ 36 37#define RETURN_IF(cond, retval) if(cond) {return (retval);} 38#define UNUSED(x) ((void)(x)) 39 40#define CLIP3(x, min, max) (((x) > max) ? max :(((x) < min)? min:(x))) 41 42#define MAX(x,y) (((x) > (y)) ? (x) :(y)) 43#define MIN(x,y) (((x) < (y)) ? (x) :(y)) 44#define SIGN(x) ((x) >= 0 ? ((x)>0 ? 1: 0) : -1) 45#define ABS(x) ((((WORD32)(x)) > 0) ? (x) : -(x)) 46 47#define ALIGN128(x) ((((x) + 127) >> 7) << 7) 48#define ALIGN64(x) ((((x) + 63) >> 6) << 6) 49#define ALIGN32(x) ((((x) + 31) >> 5) << 5) 50#define ALIGN16(x) ((((x) + 15) >> 4) << 4) 51#define ALIGN8(x) ((((x) + 7) >> 3) << 3) 52 53#define ALIGN_POW2(ptr,align) ((((WORD32)ptr)+align-1)&(~(align-1))) 54 55/** Sets x bits to '1' starting from MSB */ 56#define MSB_ONES(x) ((UWORD32)0xFFFFFFFF << (32 - (x))) 57 58/** Generates a pattern of x number of '01' in binary starting from MSB */ 59#define DUP_MSB_01(x) ((UWORD32)0x55555555 << (32 - ((x) * 2))) 60 61/** Generates a pattern of x number of '10' in binary starting from MSB */ 62#define DUP_MSB_10(x) ((UWORD32)0xAAAAAAAA << (32 - ((x) * 2))) 63 64/** Generates a pattern of x number of '11' in binary starting from MSB */ 65#define DUP_MSB_11(x) ((UWORD32)0xFFFFFFFF << (32 - ((x) * 2))) 66 67/** Sets x bits to '1' starting from LSB */ 68#define LSB_ONES(x) ((UWORD32)0xFFFFFFFF >> (32 - (x))) 69 70/** Generates a pattern of x number of '01' in binary starting from LSB */ 71#define DUP_LSB_01(x) ((UWORD32)0x55555555 >> (32 - ((x) * 2))) 72 73/** Generates a pattern of x number of '10' in binary starting from LSB */ 74#define DUP_LSB_10(x) ((UWORD32)0xAAAAAAAA >> (32 - ((x) * 2))) 75 76/** Generates a pattern of x number of '11' in binary starting from LSB */ 77#define DUP_LSB_11(x) ((UWORD32)0xFFFFFFFF >> (32 - ((x) * 2))) 78 79/** Sets the bit in given position to 1 */ 80#define BITSET(x, pos) ((x) | (1 << (pos))) 81 82/** Swap two variables */ 83#define SWAP(X,Y) \ 84{ \ 85 (X) = (X) ^ (Y); \ 86 (Y) = (X) ^ (Y); \ 87 (X) = (X) ^ (Y); \ 88} 89#endif /*_IHEVCD_MACROS_H_*/ 90