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 #define ALIGN4(x) ((((x) + 3) >> 2) << 2) 53 54 #define ALIGN_POW2(ptr,align) ((((WORD32)ptr)+align-1)&(~(align-1))) 55 56 /** Sets x bits to '1' starting from MSB */ 57 #define MSB_ONES(x) ((UWORD32)0xFFFFFFFF << (32 - (x))) 58 59 /** Generates a pattern of x number of '01' in binary starting from MSB */ 60 #define DUP_MSB_01(x) ((UWORD32)0x55555555 << (32 - ((x) * 2))) 61 62 /** Generates a pattern of x number of '10' in binary starting from MSB */ 63 #define DUP_MSB_10(x) ((UWORD32)0xAAAAAAAA << (32 - ((x) * 2))) 64 65 /** Generates a pattern of x number of '11' in binary starting from MSB */ 66 #define DUP_MSB_11(x) ((UWORD32)0xFFFFFFFF << (32 - ((x) * 2))) 67 68 /** Sets x bits to '1' starting from LSB */ 69 #define LSB_ONES(x) ((UWORD32)0xFFFFFFFF >> (32 - (x))) 70 71 /** Generates a pattern of x number of '01' in binary starting from LSB */ 72 #define DUP_LSB_01(x) ((UWORD32)0x55555555 >> (32 - ((x) * 2))) 73 74 /** Generates a pattern of x number of '10' in binary starting from LSB */ 75 #define DUP_LSB_10(x) ((UWORD32)0xAAAAAAAA >> (32 - ((x) * 2))) 76 77 /** Generates a pattern of x number of '11' in binary starting from LSB */ 78 #define DUP_LSB_11(x) ((UWORD32)0xFFFFFFFF >> (32 - ((x) * 2))) 79 80 /** Sets the bit in given position to 1 */ 81 #define BITSET(x, pos) ((x) | (1 << (pos))) 82 83 /** Swap two variables */ 84 #define SWAP(X,Y) \ 85 { \ 86 (X) = (X) ^ (Y); \ 87 (Y) = (X) ^ (Y); \ 88 (X) = (X) ^ (Y); \ 89 } 90 #endif /*_IHEVCD_MACROS_H_*/ 91