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_platform_macros.h
22 *
23 * @brief
24 * Platform specific Macro definitions used in the codec
25 *
26 * @author
27 * Ittiam
28 *
29 * @remarks
30 * None
31 *
32 *******************************************************************************
33 */
34 #ifndef _IHEVC_PLATFORM_MACROS_H_
35 #define _IHEVC_PLATFORM_MACROS_H_
36
37 #define CLIP_U8(x) CLIP3((x), 0, 255)
38 #define CLIP_S8(x) CLIP3((x), -128, 127)
39
40 #define CLIP_U10(x) CLIP3((x), 0, 1023);
41 #define CLIP_S10(x) CLIP3((x), -512, 511);
42
43 #define CLIP_U12(x) CLIP3((x), 0, 4095);
44 #define CLIP_S12(x) CLIP3((x), -2048, 2047);
45
46 #define CLIP_U14(x) CLIP3((x), 0, 16383);
47 #define CLIP_S14(x) CLIP3((x), -8192, 8191);
48
49 #define CLIP_U16(x) CLIP3((x), 0, 65535)
50 #define CLIP_S16(x) CLIP3((x), -32768, 32767)
51
52 #define ITT_BIG_ENDIAN(x) ((x & 0x000000ff) << 24) | \
53 ((x & 0x0000ff00) << 8) | \
54 ((x & 0x00ff0000) >> 8) | \
55 ((UWORD32)x >> 24);
56
57 #define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
58 #define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
59
60 #define SHR_NEG(val,shift) ((shift>0)?(val>>shift):(val<<(-shift)))
61 #define SHL_NEG(val,shift) ((shift<0)?(val>>(-shift)):(val<<shift))
62
63 #define INLINE inline
64
65 #define POPCNT_U32(x) __builtin_popcount(x)
66
CLZ(UWORD32 u4_word)67 static INLINE UWORD32 CLZ(UWORD32 u4_word)
68 {
69 if(u4_word)
70 return (__builtin_clz(u4_word));
71 else
72 return 31;
73 }
74
CLZNZ(UWORD32 u4_word)75 static INLINE UWORD32 CLZNZ(UWORD32 u4_word)
76 {
77 return (__builtin_clz(u4_word));
78 }
79
CTZ(UWORD32 u4_word)80 static INLINE UWORD32 CTZ(UWORD32 u4_word)
81 {
82 if(0 == u4_word)
83 return 31;
84 else
85 {
86 unsigned int index;
87 index = __builtin_ctz(u4_word);
88 return (UWORD32)index;
89 }
90 }
91
92 #define DATA_SYNC() __sync_synchronize()
93
94 /**
95 ******************************************************************************
96 * @brief returns postion of msb bit for 32bit input
97 ******************************************************************************
98 */
99 #define GET_POS_MSB_32(r,word) \
100 { \
101 if(word) \
102 { \
103 r = 31 - __builtin_clz(word); \
104 } \
105 else \
106 { \
107 r = -1; \
108 } \
109 }
110
111 /**
112 ******************************************************************************
113 * @brief returns postion of msb bit for 64bit input
114 ******************************************************************************
115 */
116 #define GET_POS_MSB_64(r,word) \
117 { \
118 if(word) \
119 { \
120 r = 63 - __builtin_clzll(word); \
121 } \
122 else \
123 { \
124 r = -1; \
125 } \
126 }
127
128
129 /**
130 ******************************************************************************
131 * @brief returns max number of bits required to represent input word (max 32bits)
132 ******************************************************************************
133 */
134 #define GETRANGE(r,word) \
135 { \
136 if(word) \
137 { \
138 r = 32 - __builtin_clz(word); \
139 } \
140 else \
141 { \
142 r = 1; \
143 } \
144 }
145
146
147 /**
148 *****************************************************************************************************
149 * @brief returns max number of bits required to represent input unsigned long long word (max 64bits)
150 *****************************************************************************************************
151 */
152 #define GETRANGE64(r,llword) \
153 { \
154 if(llword) \
155 { \
156 r = 64 - __builtin_clzll(llword); \
157 } \
158 else \
159 { \
160 r = 1; \
161 } \
162 }
163
164
165
166 #define NOP(nop_cnt) {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++) asm("nop");}
167
168
169
170 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
171 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
172 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
173
174 #endif /* _IHEVC_PLATFORM_MACROS_H_ */
175