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