canonmn.hpp File Reference

Canon MakerNote.References: EXIF MakerNote of Canon by David Burren Canon makernote tags by Phil Harvey. More...

#include "types.hpp"
#include "makernote.hpp"
#include "tags.hpp"
#include <string>
#include <iosfwd>
#include <memory>

Include dependency graph for canonmn.hpp:

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Namespaces
namespace	Exiv2
Classes
class	Exiv2::CanonMakerNote
	MakerNote for Canon cameras. More...
struct	Exiv2::CanonMakerNote::RegisterMn
	IGNORE More...
Functions
MakerNote::AutoPtr	createCanonMakerNote (bool alloc, const byte *buf, long len, ByteOrder byteOrder, long offset)
	Return an auto-pointer to a newly created empty MakerNote initialized to operate in the memory management model indicated. The caller owns this copy and the auto-pointer ensures that it will be deleted.
float	canonEv (long val)
	Convert Canon hex-based EV (modulo 0x20) to real number Ported from Phil Harvey's Image::ExifTool::Canon::CanonEv by Will Stokes.

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Detailed Description

Canon MakerNote.References: EXIF MakerNote of Canon by David Burren Canon makernote tags by Phil Harvey.

Version:

Rev

986

Author:

Andreas Huggel (ahu)
David Cannings (dc)

Date:

18-Feb-04, ahu: created
07-Mar-04, ahu: isolated as a separate component
12-Aug-06, dc: started updating all tags

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Function Documentation

float canonEv (  long  val  )

Convert Canon hex-based EV (modulo 0x20) to real number Ported from Phil Harvey's Image::ExifTool::Canon::CanonEv by Will Stokes. 0x00 -> 0 0x0c -> 0.33333 0x10 -> 0.5 0x14 -> 0.66666 0x20 -> 1 .. 160 -> 5 128 -> 4 143 -> 4.46875

MakerNote::AutoPtr createCanonMakerNote (  bool  alloc, const byte *  buf, long  len, ByteOrder  byteOrder, long  offset )

Return an auto-pointer to a newly created empty MakerNote initialized to operate in the memory management model indicated. The caller owns this copy and the auto-pointer ensures that it will be deleted. Parameters: alloc  Memory management model for the new MakerNote. Determines if memory required to store data should be allocated and deallocated (true) or not (false). If false, only pointers to the buffer provided to read() will be kept. See Ifd for more background on this concept. buf  Pointer to the makernote character buffer (not used). len  Length of the makernote character buffer (not used). byteOrder  Byte order in which the Exif data (and possibly the makernote) is encoded (not used). offset  Offset from the start of the TIFF header of the makernote buffer (not used). Returns: An auto-pointer to a newly created empty MakerNote. The caller owns this copy and the auto-pointer ensures that it will be deleted.

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