1 /****************************************************************************** 2 * 3 * Copyright (C) 2015 The Android Open Source Project 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 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 21 /********************************************************************************* 22 * @file 23 * ih264_macros.h 24 * 25 * @brief 26 * Macro definitions used in the codec 27 * 28 * @author 29 * Ittiam 30 * 31 * @remarks 32 * None 33 * 34 ******************************************************************************* 35 */ 36 #ifndef _IH264_MACROS_H_ 37 #define _IH264_MACROS_H_ 38 39 /*****************************************************************************/ 40 /* Function Macros */ 41 /*****************************************************************************/ 42 #define RETURN_IF(cond, retval) if(cond) {return (retval);} 43 #define UNUSED(x) ((void)(x)) 44 45 #define ALIGN128(x) ((((x) + 127) >> 7) << 7) 46 #define ALIGN64(x) ((((x) + 63) >> 6) << 6) 47 #define ALIGN32(x) ((((x) + 31) >> 5) << 5) 48 #define ALIGN16(x) ((((x) + 15) >> 4) << 4) 49 #define ALIGN8(x) ((((x) + 7) >> 3) << 3) 50 #define ALIGN4(x) ((((x) + 3) >> 2) << 2) 51 #define ALIGN2(x) ((((x) + 1) >> 1) << 1) 52 53 /** 54 ****************************************************************************** 55 * @brief Min, Max 56 ****************************************************************************** 57 */ 58 #define MAX(a,b) ((a > b)?(a):(b)) 59 #define MIN(a,b) ((a < b)?(a):(b)) 60 #define MIN3(a,b,c) ((a) < (b)) ? (((a) < (c)) ? (a) : (c)) : (((b) < (c)) ? (b) : (c)) 61 #define MAX3(a,b,c) ((a) > (b)) ? (((a) > (c)) ? (a) : (c)) : (((b) > (c)) ? (b) : (c)) 62 /** 63 ****************************************************************************** 64 * @brief Div, Mod 65 ****************************************************************************** 66 */ 67 #define MOD(x,y) ((x)%(y)) 68 #define DIV(x,y) ((x)/(y)) 69 70 /** 71 ****************************************************************************** 72 * @brief Clip 73 ****************************************************************************** 74 */ 75 #define CLIP3(miny, maxy, y) (((y) < (miny))?(miny):(((y) > (maxy))?(maxy):(y))) 76 77 /** 78 ****************************************************************************** 79 * @brief True, False 80 ****************************************************************************** 81 */ 82 #define BOOLEAN(x) (!!(x)) 83 84 /** 85 ****************************************************************************** 86 * @brief Frequently used multiplications x2. x3, and x4 87 ****************************************************************************** 88 */ 89 #define X2(a) ((a) << 1) 90 #define X3(a) (((a) << 1) + (a)) 91 #define X4(a) ((a) << 2) 92 93 /** 94 ****************************************************************************** 95 * @brief Misc 96 ****************************************************************************** 97 */ 98 #define ABS(x) ((x) < 0 ? (-(x)) : (x)) 99 #define SIGNXY(x,y) (((y) < 0) ? (-1 * (x)) : (x)) 100 101 #define SIGN(x) (((x) >= 0) ? (((x) > 0) ? 1 : 0) : -1) 102 103 #define RESET_BIT(x, pos) (x) = (x) & ~(1 << pos); 104 #define SET_BIT(x, pos) (x) = (x) | (1 << pos); 105 #define GET_BIT(x, pos) ((x) >> (pos)) & 0x1 106 107 #define INSERT_BIT(x, pos, bit) { RESET_BIT(x, pos); (x) = (x) | (bit << pos); } 108 #endif /*_IH264_MACROS_H_*/ 109 110 111