scm_file Class Reference

An scm_file encapsulates an open SCM data file. More...

#include <scm-file.hpp>

Public Member Functions
	scm_file (const std::string &name)
	Construct a file table entry. More...
void	activate (scm_cache *)
	Launch all loader threads for this file.
void	deactivate ()
	Command all loader threads to exit.
bool	is_active () const
	Return true if loader threads are active on this file.
bool	add_need (scm_task &)
	Insert a new loader task into the needs queue.
virtual bool	get_page_status (uint64) const
virtual uint64	get_page_offset (uint64) const
virtual void	get_page_bounds (uint64, float &, float &) const
virtual float	get_page_sample (const double *)
virtual uint32	get_w () const
virtual uint32	get_h () const
virtual uint16	get_c () const
virtual uint16	get_b () const
const char *	get_path () const
const char *	get_name () const
uint64	find_page (long long, double &, double &) const
	Seek the deepest page at this location (x, y) of root page a. Return the file offset of this page and convert (x, y) to local coordinates there.

Protected Attributes
std::string	path
std::string	name

Friends
int	loader (void *)
	Service page load requests. More...

Detailed Description

An scm_file encapsulates an open SCM data file.

Constructor & Destructor Documentation

scm_file::scm_file

(

const std::string &

tiff

)

Construct a file table entry.

Open the TIFF briefly to determine its format and cache its meta-data.

Friends And Related Function Documentation

int loader ( void *  data )

friend

Service page load requests.

This function is the entry point for loader threads. The void data pointer gives an scm_file structure with pointers to a needs queue and a cache with a loads queue. An invalid file request represents an order to shut down.

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

• scm-file.hpp
• scm-file.cpp