| 48e2f01c |
1 | /* |
| 2 | * Copyright (C) 2013 nu774 |
| 3 | * For conditions of distribution and use, see copyright notice in COPYING |
| 4 | */ |
| 5 | #ifndef M4AF_ENDIAN_H |
| 6 | #define M4AF_ENDIAN_H |
| 7 | |
| 8 | #if HAVE_CONFIG_H |
| 9 | # include "config.h" |
| 10 | #endif |
| 11 | #if HAVE_STDINT_H |
| 12 | # include <stdint.h> |
| 13 | #endif |
| 14 | |
| 15 | #if HAVE_ENDIAN_H |
| 16 | # include <endian.h> |
| 17 | # define m4af_htob16(x) htobe16(x) |
| 18 | # define m4af_htob32(x) htobe32(x) |
| 19 | # define m4af_htob64(x) htobe64(x) |
| 20 | # define m4af_btoh16(x) be16toh(x) |
| 21 | # define m4af_btoh32(x) be32toh(x) |
| 22 | # define m4af_btoh64(x) be64toh(x) |
| 23 | # define m4af_htol16(x) htole16(x) |
| 24 | # define m4af_htol32(x) htole32(x) |
| 25 | # define m4af_htol64(x) htole64(x) |
| 26 | # define m4af_ltoh16(x) le16toh(x) |
| 27 | # define m4af_ltoh32(x) le32toh(x) |
| 28 | # define m4af_ltoh64(x) le64toh(x) |
| 29 | #elif WORDS_BIGENDIAN |
| 30 | # define m4af_htob16(x) (x) |
| 31 | # define m4af_htob32(x) (x) |
| 32 | # define m4af_htob64(x) (x) |
| 33 | # define m4af_btoh16(x) (x) |
| 34 | # define m4af_btoh32(x) (x) |
| 35 | # define m4af_btoh64(x) (x) |
| 36 | # define m4af_ltoh16(x) m4af_swap16(x) |
| 37 | # define m4af_ltoh32(x) m4af_swap32(x) |
| 38 | # define m4af_ltoh64(x) m4af_swap64(x) |
| 39 | # define m4af_htol16(x) m4af_swap16(x) |
| 40 | # define m4af_htol32(x) m4af_swap32(x) |
| 41 | # define m4af_htol64(x) m4af_swap64(x) |
| 42 | #else |
| 43 | # define m4af_htob16(x) m4af_swap16(x) |
| 44 | # define m4af_htob32(x) m4af_swap32(x) |
| 45 | # define m4af_htob64(x) m4af_swap64(x) |
| 46 | # define m4af_btoh16(x) m4af_swap16(x) |
| 47 | # define m4af_btoh32(x) m4af_swap32(x) |
| 48 | # define m4af_btoh64(x) m4af_swap64(x) |
| 49 | # define m4af_ltoh16(x) (x) |
| 50 | # define m4af_ltoh32(x) (x) |
| 51 | # define m4af_ltoh64(x) (x) |
| 52 | # define m4af_htol16(x) (x) |
| 53 | # define m4af_htol32(x) (x) |
| 54 | # define m4af_htol64(x) (x) |
| 55 | #endif |
| 56 | |
| 57 | #if _MSC_VER >= 1400 |
| 58 | # include <stdlib.h> |
| 59 | # define m4af_swap16(x) _byteswap_ushort(x) |
| 60 | # define m4af_swap32(x) _byteswap_ulong(x) |
| 61 | # define m4af_swap64(x) _byteswap_uint64(x) |
| 62 | #elif HAVE_BYTESWAP_H |
| 63 | # include <byteswap.h> |
| 64 | # define m4af_swap16(x) bswap_16(x) |
| 65 | # define m4af_swap32(x) bswap_32(x) |
| 66 | # define m4af_swap64(x) bswap_64(x) |
| 67 | #else |
| 68 | static inline uint16_t m4af_swap16(uint16_t x) |
| 69 | { |
| 70 | return (x >> 8) | (x << 8); |
| 71 | } |
| 72 | |
| 73 | static inline uint32_t m4af_swap32(uint32_t x) |
| 74 | { |
| 75 | return (m4af_htob16(x) << 16) | m4af_htob16(x >> 16); |
| 76 | } |
| 77 | |
| 78 | static inline uint64_t m4af_swap64(uint64_t x) |
| 79 | { |
| 80 | return ((uint64_t)m4af_htob32(x) << 32) | m4af_htob32(x >> 32); |
| 81 | } |
| 82 | #endif |
| 83 | |
| 84 | #endif /* M4AF_ENDIAN_H */ |
| 85 | |
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