Output bit stream. More...

Inheritance diagram for obitstream:

Public Member Functions
	obitstream (FILE *file, int buffersize=DEFAULT_IOBUFFER_SIZE)
	Start obitstream using a FILE ptr to an open file.
	obitstream (const char *filename, int buffersize=DEFAULT_IOBUFFER_SIZE)
	Start outputbitstream by filename.
void	writebits (uint32_t data, int nbits)
	Write data to the buffer.
void	writestring (const char *str, bool write_trailing_null=false)
	Write 8-bit character strings to the buffer.
template<typename T >
void	writeword (const T data)
	Write all the bits of a word.
void	write_unary (unsigned int value)
	Write a unary code for the value.
virtual void	print () const
	Print buffer contents.
virtual void	close ()
	Close the output stream by flushing and closing the FILE *.
void	windup ()
	Put the current word to the buffer with upper 0 bits as needed.
void	flush (bool flush_trailing_bits)
	Flush the write buffer and reset for more data.

Detailed Description

Output bit stream.

Allows you to write data one bit at a time with buffered writing.

Member Function Documentation

void obitstream::flush ( bool flush_trailing_bits )

Flush the write buffer and reset for more data.

Do we need to flush even the partial words, as at EOF?

References bitstream::bitptr, bitstream::buf_used, bitstream::buffer_base, bitstream::buffptr, and bitstream::fp.

Referenced by close(), and writebits().

void obitstream::write_unary ( unsigned int value )

Write a unary code for the value.

Code will be (value) 1s followed by a zero. Since low-order bits are "first" in our convention, this means that the code for 4 is the 5-bit value 01111, interpreted by the reader as 1,1,1,1,0.

Parameters:

value The value to be coded.

The length of the code for (value) is 1+value bits.

References bitstream::Bits_per_word, and writebits().

Referenced by mexp_golomb_write().

void obitstream::writebits	(	uint32_t	data32,
		int	nbits
	)

Write data to the buffer.

Parameters:

nbits	Number of bits to use
data	Data to write (in the lowest nbits bits).

References bitstream::beyondbuffer, bitstream::bitptr, bitstream::Bits_per_word, bitstream::buffptr, and flush().

Referenced by mexp_golomb_write(), windup(), write_unary(), writestring(), and writeword().

void obitstream::writestring	(	const char *	str,
		bool	write_trailing_null = `false`
	)

Write 8-bit character strings to the buffer.

Parameters:

str	The string to write. 0-terminated
write_trailing_null	Whether to put the 0 terminator to the output.

References writebits().

template<typename T >

template void obitstream::writeword< uint32_t > ( const T data )

Write all the bits of a word.

Instantiation for several types.

Parameters:

data	The word to write.

References writebits().

The documentation for this class was generated from the following files:

/usr/src/RPM/BUILD/slim_2.6.4/src/bitstream.h
/usr/src/RPM/BUILD/slim_2.6.4/src/bitstream.cpp

Public Member Functions

Detailed Description

Member Function Documentation