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
38 #define CLIP_U8(x) CLIP3((x), 0, 255)
39 #define CLIP_S8(x) CLIP3((x), -128, 127)
40
41 #define CLIP_U10(x) CLIP3((x), 0, 1023);
42 #define CLIP_S10(x) CLIP3((x), -512, 511);
43
44 #define CLIP_U12(x) CLIP3((x), 0, 4095);
45 #define CLIP_S12(x) CLIP3((x), -2048, 2047);
46
47 #define CLIP_U16(x) CLIP3((x), 0, 65535)
48 #define CLIP_S16(x) CLIP3((x), -32768, 32767)
49
50 #define ITT_BIG_ENDIAN(x) ((x << 24)) | \
51 ((x & 0x0000ff00) << 8) | \
52 ((x & 0x00ff0000) >> 8) | \
53 ((UWORD32)x >> 24);
54
55 #define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
56 #define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
57
58 #define SHR_NEG(val,shift) ((shift>0)?(val>>shift):(val<<(-shift)))
59 #define SHL_NEG(val,shift) ((shift<0)?(val>>(-shift)):(val<<shift))
60
CLZ(UWORD32 u4_word)61 static inline UWORD32 CLZ(UWORD32 u4_word)
62 {
63 if(u4_word)
64 return (__builtin_clz(u4_word));
65 else
66 return 31;
67 }
68
CLZNZ(UWORD32 u4_word)69 static inline UWORD32 CLZNZ(UWORD32 u4_word)
70 {
71 return (__builtin_clz(u4_word));
72 }
73
CTZ(UWORD32 u4_word)74 static inline UWORD32 CTZ(UWORD32 u4_word)
75 {
76 if(0 == u4_word)
77 return 31;
78 else
79 {
80 unsigned int index;
81 index = __builtin_ctz(u4_word);
82 return (UWORD32)index;
83 }
84 }
85
86 #define POPCNT_U32(x) __builtin_popcount(x)
87
88 #define NOP(nop_cnt) {UWORD32 nop_i; for (nop_i = (nop_cnt) ; nop_i > 0 ; nop_i--) asm("nop");}
89
90 #define INLINE
91
92 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
93 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
94 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
95
96 #define DATA_SYNC() __sync_synchronize()
97
98 #endif /* _IHEVC_PLATFORM_MACROS_H_ */
99