1 #ifndef fooendianmacroshfoo
2 #define fooendianmacroshfoo
5 This file is part of PulseAudio.
7 Copyright 2004-2006 Lennart Poettering
8 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
10 PulseAudio is free software; you can redistribute it and/or modify
11 it under the terms of the GNU Lesser General Public License as published
12 by the Free Software Foundation; either version 2.1 of the License,
13 or (at your option) any later version.
15 PulseAudio is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public License
21 along with PulseAudio; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
29 #error "Please include config.h before including this file!"
32 #ifdef HAVE_BYTESWAP_H
36 #ifdef HAVE_BYTESWAP_H
37 #define PA_INT16_SWAP(x) ((int16_t) bswap_16((uint16_t) x))
38 #define PA_UINT16_SWAP(x) ((uint16_t) bswap_16((uint16_t) x))
39 #define PA_INT32_SWAP(x) ((int32_t) bswap_32((uint32_t) x))
40 #define PA_UINT32_SWAP(x) ((uint32_t) bswap_32((uint32_t) x))
42 #define PA_INT16_SWAP(x) ( (int16_t) ( ((uint16_t) (x) >> 8) | ((uint16_t) (x) << 8) ) )
43 #define PA_UINT16_SWAP(x) ( (uint16_t) ( ((uint16_t) (x) >> 8) | ((uint16_t) (x) << 8) ) )
44 #define PA_INT32_SWAP(x) ( (int32_t) ( ((uint32_t) (x) >> 24) | ((uint32_t) (x) << 24) | (((uint32_t) (x) & 0xFF00) << 8) | ((((uint32_t) (x)) >> 8) & 0xFF00) ) )
45 #define PA_UINT32_SWAP(x) ( (uint32_t) ( ((uint32_t) (x) >> 24) | ((uint32_t) (x) << 24) | (((uint32_t) (x) & 0xFF00) << 8) | ((((uint32_t) (x)) >> 8) & 0xFF00) ) )
48 static inline uint32_t PA_READ24BE(const uint8_t *p) {
50 ((uint32_t) p[0] << 16) |
51 ((uint32_t) p[1] << 8) |
55 static inline uint32_t PA_READ24LE(const uint8_t *p) {
57 ((uint32_t) p[2] << 16) |
58 ((uint32_t) p[1] << 8) |
62 static inline void PA_WRITE24BE(uint8_t *p, uint32_t u) {
63 p[0] = (uint8_t) (u >> 16);
64 p[1] = (uint8_t) (u >> 8);
68 static inline void PA_WRITE24LE(uint8_t *p, uint32_t u) {
69 p[2] = (uint8_t) (u >> 16);
70 p[1] = (uint8_t) (u >> 8);
74 static inline float PA_FLOAT32_SWAP(float x) {
81 t.u = PA_UINT32_SWAP(t.u);
85 #define PA_MAYBE_INT16_SWAP(c,x) ((c) ? PA_INT32_SWAP(x) : (x))
86 #define PA_MAYBE_UINT16_SWAP(c,x) ((c) ? PA_UINT32_SWAP(x) : (x))
88 #define PA_MAYBE_INT32_SWAP(c,x) ((c) ? PA_INT32_SWAP(x) : (x))
89 #define PA_MAYBE_UINT32_SWAP(c,x) ((c) ? PA_UINT32_SWAP(x) : (x))
91 #define PA_MAYBE_FLOAT32_SWAP(c,x) ((c) ? PA_FLOAT32_SWAP(x) : (x))
93 #ifdef WORDS_BIGENDIAN
94 #define PA_INT16_FROM_LE(x) PA_INT16_SWAP(x)
95 #define PA_INT16_FROM_BE(x) ((int16_t)(x))
97 #define PA_INT16_TO_LE(x) PA_INT16_SWAP(x)
98 #define PA_INT16_TO_BE(x) ((int16_t)(x))
100 #define PA_UINT16_FROM_LE(x) PA_UINT16_SWAP(x)
101 #define PA_UINT16_FROM_BE(x) ((uint16_t)(x))
103 #define PA_UINT16_TO_LE(x) PA_UINT16_SWAP(x)
104 #define PA_UINT16_TO_BE(x) ((uint16_t)(x))
106 #define PA_INT32_FROM_LE(x) PA_INT32_SWAP(x)
107 #define PA_INT32_FROM_BE(x) ((int32_t)(x))
109 #define PA_INT32_TO_LE(x) PA_INT32_SWAP(x)
110 #define PA_INT32_TO_BE(x) ((int32_t)(x))
112 #define PA_UINT32_FROM_LE(x) PA_UINT32_SWAP(x)
113 #define PA_UINT32_FROM_BE(x) ((uint32_t)(x))
115 #define PA_UINT32_TO_LE(x) PA_UINT32_SWAP(x)
116 #define PA_UINT32_TO_BE(x) ((uint32_t)(x))
118 #define PA_FLOAT32_TO_LE(x) PA_FLOAT32_SWAP(x)
119 #define PA_FLOAT32_TO_BE(x) ((float) (x))
121 #define PA_READ24NE(x) PA_READ24BE(x)
122 #define PA_WRITE24NE(x,y) PA_WRITE24BE((x),(y))
124 #define PA_READ24RE(x) PA_READ24LE(x)
125 #define PA_WRITE24RE(x,y) PA_WRITE24LE((x),(y))
127 #define PA_INT16_FROM_LE(x) ((int16_t)(x))
128 #define PA_INT16_FROM_BE(x) PA_INT16_SWAP(x)
130 #define PA_INT16_TO_LE(x) ((int16_t)(x))
131 #define PA_INT16_TO_BE(x) PA_INT16_SWAP(x)
133 #define PA_UINT16_FROM_LE(x) ((uint16_t)(x))
134 #define PA_UINT16_FROM_BE(x) PA_UINT16_SWAP(x)
136 #define PA_UINT16_TO_LE(x) ((uint16_t)(x))
137 #define PA_UINT16_TO_BE(x) PA_UINT16_SWAP(x)
139 #define PA_INT32_FROM_LE(x) ((int32_t)(x))
140 #define PA_INT32_FROM_BE(x) PA_INT32_SWAP(x)
142 #define PA_INT32_TO_LE(x) ((int32_t)(x))
143 #define PA_INT32_TO_BE(x) PA_INT32_SWAP(x)
145 #define PA_UINT32_FROM_LE(x) ((uint32_t)(x))
146 #define PA_UINT32_FROM_BE(x) PA_UINT32_SWAP(x)
148 #define PA_UINT32_TO_LE(x) ((uint32_t)(x))
149 #define PA_UINT32_TO_BE(x) PA_UINT32_SWAP(x)
151 #define PA_FLOAT32_TO_LE(x) ((float) (x))
152 #define PA_FLOAT32_TO_BE(x) PA_FLOAT32_SWAP(x)
154 #define PA_READ24NE(x) PA_READ24LE(x)
155 #define PA_WRITE24NE(x,y) PA_WRITE24LE((x),(y))
157 #define PA_READ24RE(x) PA_READ24BE(x)
158 #define PA_WRITE24RE(x,y) PA_WRITE24BE((x),(y))