Abstract interface for providing a stream of bytes to the EXIF parser. More...

Public Member Functions
virtual const uint8_t *	GetBuffer (unsigned desiredLength)=0
	Returns a pointer to a contiguous buffer of the requested size at the current position.
virtual bool	IsValid () const =0
	Checks whether the stream is in a valid, readable state.
virtual bool	SkipBuffer (unsigned desiredLength)=0
	Advances the current stream position by the specified number of bytes.

Detailed Description

Abstract interface for providing a stream of bytes to the EXIF parser.

Implementations supply sequential access to JPEG image data so that EXIFInfo can extract metadata without requiring the entire file in memory.

Definition at line 36 of file TinyExif.h.

Member Function Documentation

virtual const uint8_t * EXIFStream::GetBuffer ( unsigned desiredLength )

pure virtual

Returns a pointer to a contiguous buffer of the requested size at the current position.

Parameters

[in] desiredLength The number of bytes requested.

Returns: Pointer to the beginning of the buffer, or nullptr if insufficient data remains.

virtual bool EXIFStream::IsValid ( ) const

pure virtual

Checks whether the stream is in a valid, readable state.

virtual bool EXIFStream::SkipBuffer ( unsigned desiredLength )

pure virtual

Advances the current stream position by the specified number of bytes.

Parameters

[in] desiredLength The number of bytes to skip forward.

Returns: True if the skip succeeded; false if the stream ends before the desired length.

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