media/libvpx/vpx_ports/mem_ops_aligned.h@6474c204b198
media/libvpx/vpx_ports/mem_ops_aligned.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 /*
2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
12 /* \file
13 * \brief Provides portable memory access primitives for operating on aligned
14 * data
15 *
16 * This file is split from mem_ops.h for easier maintenance. See mem_ops.h
17 * for a more detailed description of these primitives.
18 */
19 #ifndef INCLUDED_BY_MEM_OPS_H
20 #error Include mem_ops.h, not mem_ops_aligned.h directly.
21 #endif
23 /* Architectures that provide instructions for doing this byte swapping
24 * could redefine these macros.
25 */
26 #define swap_endian_16(val,raw) do {\
27 val = ((raw>>8) & 0x00ff) \
28 | ((raw<<8) & 0xff00);\
29 } while(0)
30 #define swap_endian_32(val,raw) do {\
31 val = ((raw>>24) & 0x000000ff) \
32 | ((raw>>8) & 0x0000ff00) \
33 | ((raw<<8) & 0x00ff0000) \
34 | ((raw<<24) & 0xff000000); \
35 } while(0)
36 #define swap_endian_16_se(val,raw) do {\
37 swap_endian_16(val,raw);\
38 val = ((val << 16) >> 16);\
39 } while(0)
40 #define swap_endian_32_se(val,raw) swap_endian_32(val,raw)
42 #define mem_get_ne_aligned_generic(end,sz) \
43 static unsigned MEM_VALUE_T mem_get_##end##sz##_aligned(const void *vmem) {\
44 const uint##sz##_t *mem = (const uint##sz##_t *)vmem;\
45 return *mem;\
46 }
48 #define mem_get_sne_aligned_generic(end,sz) \
49 static signed MEM_VALUE_T mem_get_s##end##sz##_aligned(const void *vmem) {\
50 const int##sz##_t *mem = (const int##sz##_t *)vmem;\
51 return *mem;\
52 }
54 #define mem_get_se_aligned_generic(end,sz) \
55 static unsigned MEM_VALUE_T mem_get_##end##sz##_aligned(const void *vmem) {\
56 const uint##sz##_t *mem = (const uint##sz##_t *)vmem;\
57 unsigned MEM_VALUE_T val, raw = *mem;\
58 swap_endian_##sz(val,raw);\
59 return val;\
60 }
62 #define mem_get_sse_aligned_generic(end,sz) \
63 static signed MEM_VALUE_T mem_get_s##end##sz##_aligned(const void *vmem) {\
64 const int##sz##_t *mem = (const int##sz##_t *)vmem;\
65 unsigned MEM_VALUE_T val, raw = *mem;\
66 swap_endian_##sz##_se(val,raw);\
67 return val;\
68 }
70 #define mem_put_ne_aligned_generic(end,sz) \
71 static void mem_put_##end##sz##_aligned(void *vmem, MEM_VALUE_T val) {\
72 uint##sz##_t *mem = (uint##sz##_t *)vmem;\
73 *mem = (uint##sz##_t)val;\
74 }
76 #define mem_put_se_aligned_generic(end,sz) \
77 static void mem_put_##end##sz##_aligned(void *vmem, MEM_VALUE_T val) {\
78 uint##sz##_t *mem = (uint##sz##_t *)vmem, raw;\
79 swap_endian_##sz(raw,val);\
80 *mem = (uint##sz##_t)raw;\
81 }
83 #include "vpx_config.h"
84 #if CONFIG_BIG_ENDIAN
85 #define mem_get_be_aligned_generic(sz) mem_get_ne_aligned_generic(be,sz)
86 #define mem_get_sbe_aligned_generic(sz) mem_get_sne_aligned_generic(be,sz)
87 #define mem_get_le_aligned_generic(sz) mem_get_se_aligned_generic(le,sz)
88 #define mem_get_sle_aligned_generic(sz) mem_get_sse_aligned_generic(le,sz)
89 #define mem_put_be_aligned_generic(sz) mem_put_ne_aligned_generic(be,sz)
90 #define mem_put_le_aligned_generic(sz) mem_put_se_aligned_generic(le,sz)
91 #else
92 #define mem_get_be_aligned_generic(sz) mem_get_se_aligned_generic(be,sz)
93 #define mem_get_sbe_aligned_generic(sz) mem_get_sse_aligned_generic(be,sz)
94 #define mem_get_le_aligned_generic(sz) mem_get_ne_aligned_generic(le,sz)
95 #define mem_get_sle_aligned_generic(sz) mem_get_sne_aligned_generic(le,sz)
96 #define mem_put_be_aligned_generic(sz) mem_put_se_aligned_generic(be,sz)
97 #define mem_put_le_aligned_generic(sz) mem_put_ne_aligned_generic(le,sz)
98 #endif
100 #undef mem_get_be16_aligned
101 #define mem_get_be16_aligned mem_ops_wrap_symbol(mem_get_be16_aligned)
102 mem_get_be_aligned_generic(16)
104 #undef mem_get_be32_aligned
105 #define mem_get_be32_aligned mem_ops_wrap_symbol(mem_get_be32_aligned)
106 mem_get_be_aligned_generic(32)
108 #undef mem_get_le16_aligned
109 #define mem_get_le16_aligned mem_ops_wrap_symbol(mem_get_le16_aligned)
110 mem_get_le_aligned_generic(16)
112 #undef mem_get_le32_aligned
113 #define mem_get_le32_aligned mem_ops_wrap_symbol(mem_get_le32_aligned)
114 mem_get_le_aligned_generic(32)
116 #undef mem_get_sbe16_aligned
117 #define mem_get_sbe16_aligned mem_ops_wrap_symbol(mem_get_sbe16_aligned)
118 mem_get_sbe_aligned_generic(16)
120 #undef mem_get_sbe32_aligned
121 #define mem_get_sbe32_aligned mem_ops_wrap_symbol(mem_get_sbe32_aligned)
122 mem_get_sbe_aligned_generic(32)
124 #undef mem_get_sle16_aligned
125 #define mem_get_sle16_aligned mem_ops_wrap_symbol(mem_get_sle16_aligned)
126 mem_get_sle_aligned_generic(16)
128 #undef mem_get_sle32_aligned
129 #define mem_get_sle32_aligned mem_ops_wrap_symbol(mem_get_sle32_aligned)
130 mem_get_sle_aligned_generic(32)
132 #undef mem_put_be16_aligned
133 #define mem_put_be16_aligned mem_ops_wrap_symbol(mem_put_be16_aligned)
134 mem_put_be_aligned_generic(16)
136 #undef mem_put_be32_aligned
137 #define mem_put_be32_aligned mem_ops_wrap_symbol(mem_put_be32_aligned)
138 mem_put_be_aligned_generic(32)
140 #undef mem_put_le16_aligned
141 #define mem_put_le16_aligned mem_ops_wrap_symbol(mem_put_le16_aligned)
142 mem_put_le_aligned_generic(16)
144 #undef mem_put_le32_aligned
145 #define mem_put_le32_aligned mem_ops_wrap_symbol(mem_put_le32_aligned)
146 mem_put_le_aligned_generic(32)
148 #undef mem_get_ne_aligned_generic
149 #undef mem_get_se_aligned_generic
150 #undef mem_get_sne_aligned_generic
151 #undef mem_get_sse_aligned_generic
152 #undef mem_put_ne_aligned_generic
153 #undef mem_put_se_aligned_generic
154 #undef swap_endian_16
155 #undef swap_endian_32
156 #undef swap_endian_16_se
157 #undef swap_endian_32_se
