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_platform_macros.h
24 *
25 * @brief
26 * Platform specific Macro definitions used in the codec
27 *
28 * @author
29 * Ittiam
30 *
31 * @remarks
32 * None
33 *
34 *******************************************************************************
35 */
36
37
38 #ifndef _IH264_PLATFORM_MACROS_H_
39 #define _IH264_PLATFORM_MACROS_H_
40
41 #include <stdint.h>
42
43 #define CLIP_U8(x) CLIP3(0, UINT8_MAX, (x))
44 #define CLIP_S8(x) CLIP3(INT8_MIN, INT8_MAX, (x))
45
46 #define CLIP_U10(x) CLIP3(0, 1023, (x))
47 #define CLIP_S10(x) CLIP3(-512, 511, (x))
48
49 #define CLIP_U11(x) CLIP3(0, 2047, (x))
50 #define CLIP_S11(x) CLIP3(-1024, 1023, (x))
51
52 #define CLIP_U12(x) CLIP3(0, 4095, (x))
53 #define CLIP_S12(x) CLIP3(-2048, 2047, (x))
54
55 #define CLIP_U16(x) CLIP3(0, UINT16_MAX, (x))
56 #define CLIP_S16(x) CLIP3(INT16_MIN, INT16_MAX, (x))
57
58 #define CLIP_U32(x) CLIP3(0, UINT32_MAX, (x))
59 #define CLIP_S32(x) CLIP3(INT32_MIN, INT32_MAX, (x))
60
61 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
62
63 #define SHL(x,y) (((y) < 32) ? ((x) << (y)) : 0)
64 #define SHR(x,y) (((y) < 32) ? ((x) >> (y)) : 0)
65
66 #define SHR_NEG(val,shift) ((shift>0)?(val>>shift):(val<<(-shift)))
67 #define SHL_NEG(val,shift) ((shift<0)?(val>>(-shift)):(val<<shift))
68
69
70 #define ITT_BIG_ENDIAN(x) ((x << 24)) | \
71 ((x & 0x0000ff00) << 8) | \
72 ((x & 0x00ff0000) >> 8) | \
73 ((UWORD32)x >> 24);
74
75
76 #define NOP(nop_cnt) {UWORD32 nop_i; for (nop_i = 0; nop_i < nop_cnt; nop_i++);}
77
78 #define PLD(a)
79
80 /* In normal cases, 0 will not be passed as an argument to CLZ and CTZ.
81 As CLZ and CTZ outputs are used as a shift value in few places, these return
82 31 for u4_word == 0 case, just to handle error cases gracefully without any
83 undefined behaviour */
84
CLZ(UWORD32 u4_word)85 static __inline UWORD32 CLZ(UWORD32 u4_word)
86 {
87 if(u4_word)
88 return(__builtin_clz(u4_word));
89 else
90 return 31;
91 }
92
CTZ(UWORD32 u4_word)93 static __inline UWORD32 CTZ(UWORD32 u4_word)
94 {
95 if(0 == u4_word)
96 return 31;
97 else
98 {
99 unsigned int index;
100 index = __builtin_ctz(u4_word);
101 return (UWORD32)index;
102 }
103 }
104
105 #define DATA_SYNC()
106
107 #define INLINE
108
109 #define PREFETCH(ptr, type)
110
111 #define MEM_ALIGN8 __attribute__ ((aligned (8)))
112 #define MEM_ALIGN16 __attribute__ ((aligned (16)))
113 #define MEM_ALIGN32 __attribute__ ((aligned (32)))
114
115 #endif /* _IH264_PLATFORM_MACROS_H_ */
116