This class models the header of a CRW (Canon Raw data) image. It is the head of a CIFF parse tree, consisting of CiffDirectory and CiffEntry objects. Most of its methods will walk the parse tree to perform the requested action.
More...
#include <crwimage_int.hpp>
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| CiffHeader () |
| Default constructor.
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virtual | ~CiffHeader () |
| Virtual destructor.
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void | read (const byte *pData, uint32_t size) |
| Read the CRW image from a data buffer, starting with the Ciff header. More...
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void | add (uint16_t crwTagId, uint16_t crwDir, DataBuf buf) |
| Set the value of entry crwTagId in directory crwDir to buf. If this tag doesn't exist, it is added along with all directories needed. More...
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void | remove (uint16_t crwTagId, uint16_t crwDir) |
| Remove entry crwTagId in directory crwDir from the parse tree. If it's the last entry in the directory, the directory is removed as well, etc. More...
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void | write (Blob &blob) const |
| Write the CRW image to the binary image blob, starting with the Ciff header. This method appends to the blob. More...
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void | decode (Image &image) const |
| Decode the CRW image and add it to image. More...
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void | print (std::ostream &os, const std::string &prefix="") const |
| Print debug info for the CRW image to os. More...
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ByteOrder | byteOrder () const |
| Return the byte order (little or big endian).
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CiffComponent * | findComponent (uint16_t crwTagId, uint16_t crwDir) const |
| Finds crwTagId in directory crwDir in the parse tree, returning a pointer to the component or 0 if not found. More...
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static const char * | signature () |
| Return a pointer to the Canon CRW signature.
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This class models the header of a CRW (Canon Raw data) image. It is the head of a CIFF parse tree, consisting of CiffDirectory and CiffEntry objects. Most of its methods will walk the parse tree to perform the requested action.
◆ add()
void Exiv2::Internal::CiffHeader::add |
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uint16_t |
crwTagId, |
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uint16_t |
crwDir, |
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DataBuf |
buf |
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Set the value of entry crwTagId in directory crwDir to buf. If this tag doesn't exist, it is added along with all directories needed.
- Parameters
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crwTagId | Tag to be added. |
crwDir | Parent directory of the tag. |
buf | Value to be set. |
◆ decode()
void Exiv2::Internal::CiffHeader::decode |
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Image & |
image | ) |
const |
Decode the CRW image and add it to image.
Walk the parse tree and convert CIFF entries to metadata entries which are added to image.
- Parameters
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image | Image to add metadata to |
◆ findComponent()
CiffComponent * Exiv2::Internal::CiffHeader::findComponent |
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uint16_t |
crwTagId, |
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uint16_t |
crwDir |
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Finds crwTagId in directory crwDir in the parse tree, returning a pointer to the component or 0 if not found.
Finds crwTagId in directory crwDir, returning a pointer to the component or 0 if not found.
References Exiv2::Internal::CiffComponent::findComponent().
◆ print()
void Exiv2::Internal::CiffHeader::print |
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std::ostream & |
os, |
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const std::string & |
prefix = "" |
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Print debug info for the CRW image to os.
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os | Output stream to write to. |
prefix | Prefix to be written before each line of output. |
◆ read()
void Exiv2::Internal::CiffHeader::read |
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const byte * |
pData, |
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uint32_t |
size |
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Read the CRW image from a data buffer, starting with the Ciff header.
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pData | Pointer to the data buffer. |
size | Number of bytes in the data buffer. |
- Exceptions
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Error | If the image cannot be parsed. |
◆ remove()
void Exiv2::Internal::CiffHeader::remove |
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uint16_t |
crwTagId, |
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uint16_t |
crwDir |
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Remove entry crwTagId in directory crwDir from the parse tree. If it's the last entry in the directory, the directory is removed as well, etc.
- Parameters
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crwTagId | Tag id to be removed. |
crwDir | Parent directory of the tag. |
◆ write()
void Exiv2::Internal::CiffHeader::write |
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Blob & |
blob | ) |
const |
Write the CRW image to the binary image blob, starting with the Ciff header. This method appends to the blob.
- Parameters
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blob | Binary image to add to. |
- Exceptions
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Error | If the image cannot be written. |
The documentation for this class was generated from the following files: