diff options
Diffstat (limited to '')
| -rw-r--r-- | project/dclib/dclib-numeric.c | 94 |
1 files changed, 92 insertions, 2 deletions
diff --git a/project/dclib/dclib-numeric.c b/project/dclib/dclib-numeric.c index 138053d..d39567b 100644 --- a/project/dclib/dclib-numeric.c +++ b/project/dclib/dclib-numeric.c @@ -711,13 +711,29 @@ void write_lef4n ( float32 * dest, const float32 * src, int n ) /////////////////////////////////////////////////////////////////////////////// +static inline u16 ident16 ( u16 data ) { return data; } +static inline u32 ident32 ( u32 data ) { return data; } +static inline u64 ident64 ( u64 data ) { return data; } + +static inline u16 reverse16 ( u16 data ) { return swap16(&data); } +static inline u32 reverse32 ( u32 data ) { return swap32(&data); } +static inline u64 reverse64 ( u64 data ) { return swap64(&data); } + const endian_func_t be_func = { {0xfe,0xff}, true, false, DC_BIG_ENDIAN, be16, be24, be32, be40, be48, be56, be64, bef4, bef8, write_be16, write_be24, write_be32, write_be40, write_be48, write_be56, write_be64, - write_bef4, write_bef8 + write_bef4, write_bef8, + + #if IS_BIG_ENDIAN + ident16, ident32, ident64, + ident16, ident32, ident64, + #else + reverse16, reverse32, reverse64, + reverse16, reverse32, reverse64, + #endif }; const endian_func_t le_func = @@ -726,7 +742,15 @@ const endian_func_t le_func = le16, le24, le32, le40, le48, le56, le64, lef4, lef8, write_le16, write_le24, write_le32, write_le40, write_le48, write_le56, write_le64, - write_lef4, write_lef8 + write_lef4, write_lef8, + + #if IS_LITTLE_ENDIAN + ident16, ident32, ident64, + ident16, ident32, ident64, + #else + reverse16, reverse32, reverse64, + reverse16, reverse32, reverse64, + #endif }; const endian_func_t * GetEndianFunc ( const void * byte_order_mark ) @@ -854,6 +878,72 @@ int CheckIndex2End ( int max, int * p_begin, int * p_end ) return end - begin; } +/////////////////////////////////////////////////////////////////////////////// + +int CheckIndexC ( int max, int * p_begin, int count ) +{ + DASSERT( max >= 0 ); + DASSERT(p_begin); + + int begin = *p_begin, end = begin + count; + if ( begin < 0 ) + { + begin += max; + end = begin + count; + if ( begin < 0 ) + begin = 0; + } + else if ( begin > max ) + begin = max; + + if ( end < 0 ) + end = 0; + else if ( end > max ) + end = max; + + if ( end < begin ) + { + *p_begin = end; + return begin-end; + } + + *p_begin = begin; + return end - begin; +} + +/////////////////////////////////////////////////////////////////////////////// + +int CheckIndexCEnd ( int max, int * p_begin, int count ) +{ + DASSERT( max >= 0 ); + DASSERT(p_begin); + + int begin = *p_begin, end = begin + count; + if ( begin <= 0 ) + { + begin += max; + end = begin + count; + if ( begin < 0 ) + begin = 0; + } + else if ( begin > max ) + begin = max; + + if ( end < 0 ) + end = 0; + else if ( end > max ) + end = max; + + if ( end < begin ) + { + *p_begin = end; + return begin-end; + } + + *p_begin = begin; + return end - begin; +} + // /////////////////////////////////////////////////////////////////////////////// /////////////// encoding/decoding /////////////// |