diff options
Diffstat (limited to 'source/core')
| -rw-r--r-- | source/core/slang-riff.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/source/core/slang-riff.h b/source/core/slang-riff.h index 1622f60f4..535eaffc2 100644 --- a/source/core/slang-riff.h +++ b/source/core/slang-riff.h @@ -12,9 +12,26 @@ namespace Slang // http://fileformats.archiveteam.org/wiki/RIFF // http://www.fileformat.info/format/riff/egff.htm + typedef uint32_t FourCC; -#define SLANG_FOUR_CC(c0, c1, c2, c3) FourCC((uint32_t(c0) << 0) | (uint32_t(c1) << 8) | (uint32_t(c2) << 16) | (uint32_t(c3) << 24)) +/* Use of macros to construct and extract from FourCC means the FourCC ordering can be fixed for endian differences. */ + +#if SLANG_LITTLE_ENDIAN + +#define SLANG_FOUR_CC(c0, c1, c2, c3) ((FourCC(c0) << 0) | (FourCC(c1) << 8) | (FourCC(c2) << 16) | (FourCC(c3) << 24)) + +#define SLANG_FOUR_CC_GET_FIRST_CHAR(x) char((x) & 0xff) +#define SLANG_FOUR_CC_REPLACE_FIRST_CHAR(x, c) (((x) & 0xffffff00) | FourCC(c)) + +#else + +#define SLANG_FOUR_CC(c0, c1, c2, c3) ((FourCC(c0) << 24) | (FourCC(c1) << 16) | (FourCC(c2) << 8) | (FourCC(c3) << 0)) + +#define SLANG_FOUR_CC_GET_FIRST_CHAR(x) char((x) >> 24) +#define SLANG_FOUR_CC_REPLACE_FIRST_CHAR(x, c) (((x) & 0x00ffffff) | (FourCC(c) << 24)) + +#endif enum { |