ioformat Namespace Reference

Global namespace which contains all methods to encode/decode data from/into different resources (files, streams...) and some other helper classes and methods. More...

Classes
class	DecodingError
class	EncodingError
class	Logger
class	StackReader
class	UnsupportedFormat
class	UnsupportedOperation
class	Versioning

Functions
IOFORMAT_API bool	init ()
IOFORMAT_API std::shared_ptr< iolink::View >	openView (const std::string &pathFile)
IOFORMAT_API std::shared_ptr< iolink::View >	openView (const std::string &path, const std::string &format)
IOFORMAT_API std::shared_ptr< iolink::View >	openView (const iolink::Uri &uri)
IOFORMAT_API std::shared_ptr< iolink::View >	openView (const iolink::Uri &uri, const std::string &format)
IOFORMAT_API std::shared_ptr< iolink::ImageView >	readImage (const std::string &pathFile)
IOFORMAT_API std::shared_ptr< iolink::View >	openView (std::shared_ptr< iolink::DataAccess > storage, const std::string &format)
IOFORMAT_API std::shared_ptr< iolink::Writer >	openWriter (std::shared_ptr< iolink::View > view, const std::string &pathFile)
IOFORMAT_API std::shared_ptr< iolink::Writer >	openWriter (std::shared_ptr< iolink::View > view, std::shared_ptr< iolink::DataAccess > dst, const std::string &format)
IOFORMAT_API std::shared_ptr< iolink::Writer >	openWriter (std::shared_ptr< iolink::View > view, std::shared_ptr< iolink::DataAccess > dst, const std::string &format, const std::string &plugin)
IOFORMAT_API void	writeView (std::shared_ptr< iolink::View > view, const std::string &pathFile)
IOFORMAT_API void	writeView (std::shared_ptr< iolink::View > view, std::shared_ptr< iolink::DataAccess > dst, const std::string &format)
IOFORMAT_API std::string	formatFromExtension (const std::string &extension)

Detailed Description

Global namespace which contains all methods to encode/decode data from/into different resources (files, streams...) and some other helper classes and methods.

Function Documentation

formatFromExtension()

IOFORMAT_API std::string ioformat::formatFromExtension

(

const std::string &

extension

)

Helper to retrieve a format from an extension

Exetension are case insensitive, so for example "png" and "PNG" are the same for this function, and will return the same format.

Parameters

extension

string which contains the extension to identify (without dot)

Returns

a string containing the format identifier corresponding to this extension

init()

IOFORMAT_API bool ioformat::init

(

)

Force IOFormat initialization. If not called, it will be initialized at the first call of any following methods. This method allows you to force the loading of all the IOFormat plugins. It may take some time, depending on the number of plugins to load.

Returns

true if at least one plugin was correctly loaded, false otherwise

openView() [1/5]

IOFORMAT_API std::shared_ptr<iolink::View> ioformat::openView

(

const iolink::Uri &

uri

)

Access to data from Uniform Resource Identifier, using the extension of the path to determine format

Exceptions

iolink::Error

openView() [2/5]

IOFORMAT_API std::shared_ptr<iolink::View> ioformat::openView	(	const iolink::Uri &	uri,
		const std::string &	format
	)

Access to data from Uniform Resource Identifier, using the given format to decode it

Exceptions

iolink::Error

openView() [3/5]

IOFORMAT_API std::shared_ptr<iolink::View> ioformat::openView	(	const std::string &	path,
		const std::string &	format
	)

Open a View on the file at the given path, forcing to a specific format.

Parameters

path	The path to the file
format	The format to use to read the file

Exceptions

UnsupportedFormat

When the extractor selected according to the format cannot read the file.

openView() [4/5]

IOFORMAT_API std::shared_ptr<iolink::View> ioformat::openView

(

const std::string &

pathFile

)

Access to data from given file, using the extension of the file to determine format

Exceptions

iolink::Error
iolink::InvalidArgument
ioformat::UnsupportedFormat

openView() [5/5]

IOFORMAT_API std::shared_ptr<iolink::View> ioformat::openView	(	std::shared_ptr< iolink::DataAccess >	storage,
		const std::string &	format
	)

Access to data from given storage, using the given format to decode it

Parameters

storage	input storage containing the data to decode with given format
format	file format to apply on given stream to decode

Exceptions

iolink::Error
iolink::InvalidArgument
ioformat::UnsupportedFormat

openWriter() [1/3]

IOFORMAT_API std::shared_ptr<iolink::Writer> ioformat::openWriter	(	std::shared_ptr< iolink::View >	view,
		const std::string &	pathFile
	)

Open a writer used to write an image view into a file.

Parameters

view	The view that will be written
pathFile	a path to the output file.

Returns

A writer ready to write the image into the file.

openWriter() [2/3]

IOFORMAT_API std::shared_ptr<iolink::Writer> ioformat::openWriter	(	std::shared_ptr< iolink::View >	view,
		std::shared_ptr< iolink::DataAccess >	dst,
		const std::string &	format
	)

Open a writer used to write an image view into an output stream.

Parameters

view	The view that will be written
dst	The output stream where the encoded data will be written.
format	The format to use to encode the image.

Returns

A writer ready to write the image into the output stream.

openWriter() [3/3]

IOFORMAT_API std::shared_ptr<iolink::Writer> ioformat::openWriter	(	std::shared_ptr< iolink::View >	view,
		std::shared_ptr< iolink::DataAccess >	dst,
		const std::string &	format,
		const std::string &	plugin
	)

Open a writer used to write an image view into an output stream.

Parameters

view	The view that will be written
dst	The output stream where the encoded data will be written.
format	The format to use to encode the image.
plugin	The specific plugin to use.

Returns

A writer ready to write the image into the output stream.

readImage()

IOFORMAT_API std::shared_ptr<iolink::ImageView> ioformat::readImage

(

const std::string &

pathFile

)

Access to data from given file, using the extension of the file to determine format. Image is fully loaded in memory. Limitation:

• If file contains more than one image (like an image and its thumbnail), this method will only load first read frame.
• If data is not an image or is not readable, an UnsupportedFormat exception is thrown

  Exceptions

  iolink::Error
  ioformat::UnsupportedFormat

writeView() [1/2]

IOFORMAT_API void ioformat::writeView	(	std::shared_ptr< iolink::View >	view,
		const std::string &	pathFile
	)

Save a view into a file.

Parameters

view	The view to save
pathFile	The path of the file where to save the image

Exceptions

iolink::Error

When the image cannot be written

writeView() [2/2]

IOFORMAT_API void ioformat::writeView	(	std::shared_ptr< iolink::View >	view,
		std::shared_ptr< iolink::DataAccess >	dst,
		const std::string &	format
	)

Save a view into a storage.

Parameters

view	The view to save
dst	The storage where to save the image
format	The format in which the image will be encoded

Exceptions

iolink::Error

When the image cannot be written