vil1_stream_core Class Reference

#include <vil1_stream_core.h>

Inheritance diagram for vil1_stream_core:

List of all members.

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Detailed Description

An in-core vil1_stream implementation.

This is an infinite stream - reads past the last point written will succeed but will return garbage data.

Definition at line 18 of file vil1_stream_core.h.

Public Member Functions
	vil1_stream_core (unsigned block_size=16384)
unsigned	size () const
	get current file size.
vil1_streampos	m_transfer (char *buf, vil1_streampos pos, vil1_streampos n, bool read)
	Read or write n bytes at position pos.
bool	ok () const
	Return false if the stream is broken.
vil1_streampos	read (void *buf, vil1_streampos n)
	Read n bytes into buf. Returns number of bytes read.
vil1_streampos	write (void const *buf, vil1_streampos n)
	Write n bytes from buf. Returns number of bytes written.
vil1_streampos	tell () const
	Return file pointer.
void	seek (vil1_streampos position)
	Goto file pointer.
void	ref ()
	up/down the reference count.
void	unref ()
Protected Member Functions
	~vil1_stream_core ()
Private Attributes
vil1_streampos	curpos_
unsigned	blocksize_
vcl_vector< char * >	block_
vil1_streampos	tailpos_

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Constructor & Destructor Documentation

vil1_stream_core::vil1_stream_core

(

unsigned

block_size = 16384

)

[inline]

Definition at line 26 of file vil1_stream_core.h.

vil1_stream_core::~vil1_stream_core

(

)

[protected]

Definition at line 11 of file vil1_stream_core.cxx.

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Member Function Documentation

unsigned vil1_stream_core::size

(

)

const [inline]

get current file size.

Definition at line 30 of file vil1_stream_core.h.

vil1_streampos vil1_stream_core::m_transfer	(	char *	buf,
		vil1_streampos	pos,
		vil1_streampos	n,
		bool	read
	)

Read or write n bytes at position pos.

This does not change the current position. When read=false, buf is actually a "char const *".

Definition at line 39 of file vil1_stream_core.cxx.

bool vil1_stream_core::ok

(

)

const [inline, virtual]

Return false if the stream is broken.

Implements vil1_stream.

Definition at line 38 of file vil1_stream_core.h.

vil1_streampos vil1_stream_core::read	(	void *	buf,
		vil1_streampos	n
	)			[virtual]

Read n bytes into buf. Returns number of bytes read.

The return value is less than n only at eof.

Implements vil1_stream.

Definition at line 20 of file vil1_stream_core.cxx.

vil1_streampos vil1_stream_core::write	(	void const *	buf,
		vil1_streampos	n
	)			[virtual]

Write n bytes from buf. Returns number of bytes written.

The return value is less than n only in case of device failure.

Implements vil1_stream.

Definition at line 29 of file vil1_stream_core.cxx.

vil1_streampos vil1_stream_core::tell

(

)

const [inline, virtual]

Return file pointer.

Implements vil1_stream.

Definition at line 41 of file vil1_stream_core.h.

void vil1_stream_core::seek

(

vil1_streampos

position

)

[inline, virtual]

Goto file pointer.

Implements vil1_stream.

Definition at line 42 of file vil1_stream_core.h.

void vil1_stream::ref

(

)

[inline, inherited]

up/down the reference count.

Definition at line 38 of file vil1_stream.h.

void vil1_stream::unref

(

)

[inherited]

Definition at line 31 of file vil1_stream.cxx.

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Member Data Documentation

vil1_streampos vil1_stream_core::curpos_ [private]

Definition at line 20 of file vil1_stream_core.h.

unsigned vil1_stream_core::blocksize_ [private]

Definition at line 21 of file vil1_stream_core.h.

vcl_vector<char*> vil1_stream_core::block_ [private]

Definition at line 22 of file vil1_stream_core.h.

vil1_streampos vil1_stream_core::tailpos_ [private]

Definition at line 23 of file vil1_stream_core.h.

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

• core/vil1/vil1_stream_core.h
• core/vil1/vil1_stream_core.cxx

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