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pnmbitio.cxx File Reference

#include "pnmbitio.h"
#include <assert.h>

Go to the source code of this file.

Compounds

struct  bitstream

Defines

#define Mask(n)   ((1<<(n))-1)
#define BitPut(b, ul, n)
#define BitGet(b, n)   (((b)->bitbuf>>((b)->nbitbuf-=(n))) & Mask(n))

Functions

EXPCL_PANDA struct bitstream * pm_bitinit (istream *f, char *mode)
EXPCL_PANDA struct bitstream * pm_bitinit (ostream *f, char *mode)
EXPCL_PANDA int pm_bitfini (struct bitstream *b)
EXPCL_PANDA int pm_bitread (struct bitstream *b, unsigned long nbits, unsigned long *val)
EXPCL_PANDA int pm_bitwrite (struct bitstream *b, unsigned long nbits, unsigned long val)

Define Documentation

#define BitGet (  b,
n   )     (((b)->bitbuf>>((b)->nbitbuf-=(n))) & Mask(n))
 

Definition at line 36 of file pnmbitio.cxx.

Referenced by pm_bitfini(), pm_bitread(), and pm_bitwrite().

#define BitPut (  b,
ul,
n   ) 
 

Value:

((b)->bitbuf = (((b)->bitbuf<<(n))      \
                                        |((ul)&Mask(n))),       \
                        (b)->nbitbuf += (n))

Definition at line 32 of file pnmbitio.cxx.

Referenced by pm_bitfini(), pm_bitread(), and pm_bitwrite().

#define Mask (  n   )     ((1<<(n))-1)
 

Definition at line 30 of file pnmbitio.cxx.

Function Documentation

EXPCL_PANDA int pm_bitfini (  struct bitstream *  b  ) 
 

Definition at line 99 of file pnmbitio.cxx.

References b, BitGet, BitPut, and c.

EXPCL_PANDA struct bitstream* pm_bitinit (  ostream *  f,
char *  mode
) 
 

Definition at line 69 of file pnmbitio.cxx.

References mode, bitstream::mode, bitstream::outf, and pm_bitinit().

Referenced by BMPreadrow(), and BMPwriterow().

EXPCL_PANDA struct bitstream* pm_bitinit (  istream *  f,
char *  mode
) 
 

Definition at line 49 of file pnmbitio.cxx.

Referenced by pm_bitinit().

EXPCL_PANDA int pm_bitread (  struct bitstream *  b,
unsigned long  nbits,
unsigned long *  val
) 
 

Definition at line 146 of file pnmbitio.cxx.

References b, BitGet, BitPut, and c.

EXPCL_PANDA int pm_bitwrite (  struct bitstream *  b,
unsigned long  nbits,
unsigned long  val
) 
 

Definition at line 182 of file pnmbitio.cxx.

References b, BitGet, BitPut, and c.

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