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added macros to read little endian words from a byte stream 

(e.g. NEXT_ShortLE(buffer))
This commit is contained in:
David Turner 2000-05-02 10:50:18 +00:00
parent 65e823da0f
commit 61492029a5
1 changed files with 27 additions and 0 deletions
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27
src/base/ftstream.h
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@ -75,6 +75,11 @@ typedef struct FT_Frame_Field_
#define FT_FRAME_BYTE(s,f) FT_FRAME_FIELD( ft_frame_byte, s, f )
#define FT_FRAME_CHAR(s,f) FT_FRAME_FIELD( ft_frame_schar, s, f )
#define FT_FRAME_LONG_LE(s,f) FT_FRAME_FIELD( ft_frame_long_le, s, f )
#define FT_FRAME_ULONG_LE(s,f) FT_FRAME_FIELD( ft_frame_ulong_le, s, f )
#define FT_FRAME_SHORT_LE(s,f) FT_FRAME_FIELD( ft_frame_short_le, s, f )
#define FT_FRAME_USHORT_LE(s,f) FT_FRAME_FIELD( ft_frame_ushort_le, s, f )
/*************************************************************************/
/* */
/* integer extraction macros - the `buffer' parameter must ALWAYS be of */
@ -105,6 +110,28 @@ typedef struct FT_Frame_Field_
#define NEXT_ULong(buffer) ((unsigned long)NEXT_Long(buffer))
#define NEXT_ShortLE(buffer) ( buffer += 2, \
( (short)((signed char)buffer[-1] << 8) | \
(unsigned char)buffer[-2] ) )
#define NEXT_UShortLE(buffer) ((unsigned short)NEXT_ShortLE(buffer))
#define NEXT_OffsetLE(buffer) ( buffer += 3, \
( ((long)(signed char)buffer[-1] << 16) | \
((long)(unsigned char)buffer[-2] << 8) | \
(long)(unsigned char)buffer[-3] ) )
#define NEXT_UOffsetLE(buffer) ((unsigned long)NEXT_OffsetLE(buffer))
#define NEXT_LongLE(buffer) ( buffer += 4, \
( ((long)(signed char)buffer[-1] << 24) | \
((long)(unsigned char)buffer[-2] << 16) | \
((long)(unsigned char)buffer[-3] << 8) | \
(long)(unsigned char)buffer[-4] ) )
#define NEXT_ULongLE(buffer) ((unsigned long)NEXT_LongLE(buffer))
/*************************************************************************/
/* */
/* Each GET_xxxx() macro uses an implicit `stream' variable. */