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libFLAC: Support 64bit brword/bwword

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This patch allows FLAC__BYTES_PER_WORD to be set to 8, but is disabled by
default.

Patch-from: lvqcl <lvqcl.mail@gmail.com>
This commit is contained in:
Erik de Castro Lopo
2016-01-04 10:30:54 +11:00
parent 0a0e5363ad
commit 6cc1cbad2c
5 changed files with 222 additions and 55 deletions
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6
include/share/endswap.h
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@@ -43,11 +43,13 @@ static inline unsigned short __builtin_bswap16(unsigned short a)
#define ENDSWAP_16(x) (__builtin_bswap16 (x))
#define ENDSWAP_32(x) (__builtin_bswap32 (x))
#define ENDSWAP_64(x) (__builtin_bswap64 (x))
#elif defined _MSC_VER /* Windows. Apparently in <stdlib.h>. */
#define ENDSWAP_16(x) (_byteswap_ushort (x))
#define ENDSWAP_32(x) (_byteswap_ulong (x))
#define ENDSWAP_64(x) (_byteswap_uint64 (x))
#elif defined HAVE_BYTESWAP_H /* Linux */
@@ -55,16 +57,18 @@ static inline unsigned short __builtin_bswap16(unsigned short a)
#define ENDSWAP_16(x) (bswap_16 (x))
#define ENDSWAP_32(x) (bswap_32 (x))
#define ENDSWAP_64(x) (bswap_64 (x))
#else
#define ENDSWAP_16(x) ((((x) >> 8) & 0xFF) | (((x) & 0xFF) << 8))
#define ENDSWAP_32(x) ((((x) >> 24) & 0xFF) | (((x) >> 8) & 0xFF00) | (((x) & 0xFF00) << 8) | (((x) & 0xFF) << 24))
#define ENDSWAP_64(x) ((ENDSWAP_32(((x) >> 32) & 0xFFFFFFFF)) | (ENDSWAP_32((x) & 0xFFFFFFFF) << 32))
#endif
/* Host to little-endian byte swapping. */
/* Host to little-endian byte swapping (for MD5 calculation) */
#if CPU_IS_BIG_ENDIAN
#define H2LE_16(x) ENDSWAP_16 (x)