Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 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) |
Harish Mahendrakar | 3a52efd | 2015-04-28 19:07:40 +0530 | [diff] [blame] | 51 | #define ALIGN2(x) ((((x) + 1) >> 1) << 1) |
Hamsalekha S | 8d3d303 | 2015-03-13 21:24:58 +0530 | [diff] [blame] | 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 | |