A JP2_Box contains JP2 file format box data. More...

#include <JP2_Box.hh>

Collaboration diagram for JP2_Box:

Public Types
typedef std::vector< JP2_Box * >	JP2_Box_List
	List of JP2 boxes.
Public Member Functions
	JP2_Box ()
	Construct a JP2_Box with no data content.
	JP2_Box (unsigned int box_type, const unsigned char *data=NULL, unsigned int amount=0)
	Construct a JP2_Box of some type and with optional data content.
	JP2_Box (unsigned int box_type, const std::string &text)
	Construct a JP2_Box of some type with text content.
virtual	~JP2_Box ()
	Destroy this JP2_Box.
std::string	type_name () const
	Get the type name of the box.
JP2_Box &	type_name (const std::string &name)
	Set the type name of the box.
unsigned int	type_code () const
	Get the type code of the box.
JP2_Box &	type_code (unsigned int box_type)
	Set the type code of the box.
unsigned int	content_amount () const
	Get the box data content amount.
unsigned char *	content () const
	Get the box data content.
JP2_Box &	content (const unsigned char *data, unsigned int amount=0)
	Set the box data content.
JP2_Box &	content (const std::string &text)
	Set the box data content.
bool	locally_owned_content () const
	Test if the box data content buffer is locally owned.
JP2_Box &	attach_content (unsigned char *data, unsigned int amount=0)
	Set the box data content.
JP2_Box &	append_content (const unsigned char *data, unsigned int amount)
	Append data to the box data content.
JP2_Box &	append_content (const std::string &text)
	Append text to the box data content.
JP2_Box &	add (JP2_Box *sub_box)
	Add a sub-box to this box.
JP2_Box &	add (JP2_Box &sub_box)
	Add a sub-box to this box.
bool	remove (JP2_Box *sub_box)
	Remove a sub-box from this box.
JP2_Box_List &	sub_boxes ()
	Get the list of sub-boxes contained in this box.
JP2_Box *	container () const
	Get the container of this box.
Static Public Member Functions
static std::string	type_name (unsigned int box_type)
	Convert a JP2 box type code to a string.
static unsigned int	type_code (const std::string &name)
	Convert a JP2 box type string to an integer code.
Static Public Attributes
static const char *const	ID = "UA::HiRISE::JP2_Box (1.6 2010/11/24 03:32:14)"
	Class identification name with source code version and date.
static const unsigned int	UUID_BOX_TYPE = 0x75756964
	UUID box type.
static const unsigned int	UUID_SIZE = 16
	Size of the UUID data content.
static const unsigned int	UUID_INFO_BOX_TYPE = 0x75696E66
	UUID Info box type.
static const unsigned int	UUID_LIST_BOX_TYPE = 0x756C7374
	UUID List box type.
static const unsigned int	URL_BOX_TYPE = 0x75726C20
	URL box type.
static const unsigned int	XML_BOX_TYPE = 0x786D6C20
	XML box type.
static const unsigned int	ASSOCIATION_BOX_TYPE = 0X61736F63
	Association box type.
static const unsigned int	LABEL_BOX_TYPE = 0X6C626C20
	Label box type.
static const unsigned int	INTELLECTUAL_PROPERTY_BOX_TYPE = 0x6A703269
	Intellectual Property box type.
Protected Attributes
unsigned int	Type
	The JP2 box type code.
unsigned char *	Content
	The data content buffer.
unsigned int	Content_Amount
	The amount (bytes) of content data.
bool	Locally_Owned_Content
	Flag for a locally owned data content buffer.
JP2_Box *	Container
	Pointer to the JP2_Box that contains this box.
JP2_Box_List	Sub_Boxes
	List of boxes contained in this box.

Detailed Description

A JP2_Box contains JP2 file format box data.

Author:: Bradford Castalia; UA/HiROC

Version:: 1.4

Member Typedef Documentation

typedef std::vector<JP2_Box*> JP2_Box_List

List of JP2 boxes.

Constructor & Destructor Documentation

JP2_Box ( )

Construct a JP2_Box with no data content.

Construct JP2_Box with no content.

JP2_Box	(	unsigned int	box_type,
		const unsigned char *	data = `NULL`,
		unsigned int	amount = `0`
	)		`[explicit]`

Construct a JP2_Box of some type and with optional data content.

Parameters:

box_type	The 32-bit integer box type code value.
amount	The number of data content bytes. If zero the box will be emptied and the data will be ignored.
data	A pointer (const unsigned char) to the data content. N.B.*: The data will be copied to a locally owned data buffer. If NULL the box will be emptied and the amount will be ignored.

Exceptions:

invalid_argument	If a type code byte value does not correspond to a printable character (<32 or >126).
length_error	If insufficient memory is available to allocate the data content buffer.

See also:: content(unsigned int, const unsigned char*)

References box_name().

JP2_Box	(	unsigned int	box_type,
		const std::string &	text
	)		`[explicit]`

Construct a JP2_Box of some type with text content.

Parameters:

box_type	The 32-bit integer box type code value.
text	The text string to be set as the box content.

See also:: content(const std::string&)

References box_name().

~JP2_Box ( ) [virtual]

Destroy this JP2_Box.

Any locally owned content data is freed.

References JP2_Box::Content, JP2_Box::Locally_Owned_Content, and JP2_Box::Sub_Boxes.

Member Function Documentation

std::string type_name ( ) const [inline]

Get the type name of the box.

The type name is the string representation of the type code bytes that are stored as the second value of each JP2 box.

Returns:: The type name of the box. This will be the empty string if the box is undefined.

Exceptions:

invalid_argument If the type code is an invalid value.

See also:: type_name(unsigned int)

References JP2_Box::Type, and JP2_Box::type_name().

Referenced by JP2_Box::add(), and JP2_Box::type_name().

JP2_Box & type_name ( const std::string & name )

Set the type name of the box.

Parameters:

name	The type name to be applied to the JP2 box.

Returns:: This JP2_Box.

Exceptions:

invalid_argument If the string does not contain exactly four characters or any character is not printable (<32 or >126).

See also:: type_code(const std::string&)

unsigned int type_code ( ) const [inline]

Get the type code of the box.

The type code is the second value of each JP2 box.

Returns:: The JP2 box type code value. This will be zero if the box is undefined.

References JP2_Box::Type.

Referenced by JP2_Encoder::write_user_boxes().

JP2_Box & type_code ( unsigned int box_type )

Set the type code of the box.

Parameters:

box_type The 32-bit integer box type code value.

Returns:: This JP2_Box.

Exceptions:

invalid_argument If a type code byte value does not correspond to a printable character (<32 or >126).

References box_type().

unsigned int content_amount ( ) const [inline]

Get the box data content amount.

The box data content amount is the size of the content buffer, in bytes.

Returns:: The size of the box data content data buffer, in bytes. This will be zero if the box has no data content.

References JP2_Box::Content_Amount.

unsigned char* content ( ) const [inline]

Get the box data content.

Returns:: A pointer to the box data content as an unsigned char*. Caution: The box data content is not copied.

References JP2_Box::Content.

JP2_Box & content	(	const unsigned char *	data,
		unsigned int	amount = `0`
	)

Set the box data content.

Any current content is replaced.

Parameters:

data	A pointer (const unsigned char) to the data content. N.B.*: The data will be copied to a locally owned content buffer. If NULL the box will be emptied and the amount will be ignored.
amount	The number of data bytes. If zero the box will be emptied and the data will be ignored.

Returns:: This JP2_Box.

Exceptions:

length_error If insufficient memory is available to allocate the data content buffer.

See also:: attach_content(unsigned int, unsigned char*)

References ID.

JP2_Box & content ( const std::string & text )

Set the box data content.

Any current content is replaced.

The characters of the string, plus a terminating zero-value character, are copied into the box content.

Parameters:

text	The text string to be set as the box content.

Returns:: This JP2_Box.

Exceptions:

length_error If insufficient memory is available to allocate the data content buffer.

See also:: content(unsigned int, const unsigned char*)

bool locally_owned_content ( ) const [inline]

Test if the box data content buffer is locally owned.

A locally owned data content buffer has been allocated by the JP2_Box and will be deleted when the JP2_Box is destroyed. If the data content buffer was attached to the JP2_Box it is externally owned and will not be deleted when the JP2_Box is destroyed; in this case it is the responsibility of the data buffer owner to ensure that the buffer remains valid until the JP2_Box will no longer be used.

N.B.: Data content that is not locally owned will not be freed when the JP2_Box is destroyed.

Returns:: true if the data content buffer is locally owned, false otherwise.

References JP2_Box::Locally_Owned_Content.

JP2_Box & attach_content	(	unsigned char *	data,
		unsigned int	amount = `0`
	)

Set the box data content.

Any current content is replaced.

Parameters:

data	A pointer (const unsigned char) to the data content. N.B.*: The data data will not be copied. If NULL the box will be emptied and the amount will be ignored.
amount	The number of data bytes. If zero the box will be emptied and the data will be ignored.

Returns:: This JP2_Box.

See also:: content(unsigned int, const unsigned char*)

JP2_Box & append_content	(	const unsigned char *	data,
		unsigned int	amount
	)

Append data to the box data content.

N.B.: Data can only be appended to locally owned content.

A new data content buffer is provided that is the size of the current content amount plus the amount of new data. The current content and new data are copied into the new buffer. The previous buffer is deleted, the new buffer becomes the current content and content amount is updated.

Parameters:

amount	The number of data bytes. If zero nothing is done.
data	A pointer (const unsigned char*) to the additional data content. If NULL nothing is done.

Returns:: This JP2_Box.

Exceptions:

logic_error	If there is a non-zero amount of content that is not locally owned.
length_error	If insufficient memory is available to allocate the data content buffer.

References box_type(), and ID.

Referenced by PDS_Projection_Data::JP2_GeoTIFF().

JP2_Box & append_content ( const std::string & text )

Append text to the box data content.

N.B.: Data can only be appended to locally owned content.

The characters of the text string, plus a terminating null character, are appended to the current box content.

Parameters:

text	The text string to be appended to the box content.

Returns:: This JP2_Box.

JP2_Box & add ( JP2_Box * sub_box )

Add a sub-box to this box.

If the sub-box is contained in another box it is removed from its container.

The sub-box is added to the end of the list of sub-boxes and its container is set to this JP2_Box.

Parameters:

sub_box A pointer to the JP2_Box that is to be added to this box. If NULL nothing is done.

Returns:: This JP2_Box.

Exceptions:

invalid_argument If the sub-box is this JP2_Box.

See also:: remove(JP2_Box*)

References box_name(), JP2_Box::Container, ID, JP2_Box::remove(), JP2_Box::Type, and JP2_Box::type_name().

Referenced by PDS_Projection_Data::JP2_GML().

JP2_Box& add ( JP2_Box & sub_box ) [inline]

Add a sub-box to this box.

Parameters:

sub_box A pointer to the JP2_Box that is to be added to this box. If NULL nothing is done.

Returns:: This JP2_Box.

Exceptions:

invalid_argument If the sub-box is this JP2_Box.

See also:: add(JP2_Box*)

References JP2_Box::add().

Referenced by JP2_Box::add().

bool remove ( JP2_Box * sub_box )

Remove a sub-box from this box.

If the sub-box is found in the list of sub-boxes it is removed from the list and its container is set to NULL.

Parameters:

sub_box A pointer to the JP2_Box that is to be removed from this box. A NULL argument is allowed and will be used to remove a NULL entry if one is present, however this should not occur if the add method is always used to add sub-boxes to the box.

Returns:: true if the sub-box was removed, or false if the sub-box was not found in this box.

See also:: add(JP2_Box*)

References JP2_Box::Container.

Referenced by JP2_Box::add().

JP2_Box_List& sub_boxes ( ) [inline]

Get the list of sub-boxes contained in this box.

Caution: The JP2_Box_List is a vector of JP2_Box pointers which can be manipulated (re-ordered, etc.) as desired, however adding and removing entries should only be done with the add and remove methods to maintain the correct container relationships.