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[
#BlobToFile
BlobToFile
|
#BlobToImage
BlobToImage
|
#DestroyBlob
DestroyBlob
|
#DetachBlob
DetachBlob
|
#FileToBlob
FileToBlob
|
#GetBlobError
GetBlobError
|
#GetBlobFileHandle
GetBlobFileHandle
|
#GetBlobInfo
GetBlobInfo
|
#GetBlobStreamData
GetBlobStreamData
|
#GetBlobStreamHandler
GetBlobStreamHandler
|
#ImageToBlob
ImageToBlob
|
#ImageToFile
ImageToFile
|
#ImagesToBlob
ImagesToBlob
|
#IsBlobExempt
IsBlobExempt
|
#IsBlobSeekable
IsBlobSeekable
|
#IsBlobTemporary
IsBlobTemporary
|
#PingBlob
PingBlob
|
#ReadBlobStream
ReadBlobStream
|
#SetBlobExempt
SetBlobExempt
]
BlobToFile
BlobToFile() writes a blob to a file.  It returns MagickFalse if an error occurs otherwise MagickTrue.
The format of the BlobToFile method is:
MagickBooleanType BlobToFile(char *filename,const void *blob,
const size_t length,ExceptionInfo *exception)
A description of each parameter follows:
filename
Write the blob to this file.
blob
The address of a blob.
length
This length in bytes of the blob.
exception
Return any errors or warnings in this structure.
BlobToImage
BlobToImage() implements direct to memory image formats.  It returns the blob as an image.
The format of the BlobToImage method is:
Image *BlobToImage(const ImageInfo *image_info,const void *blob,
const size_t length,ExceptionInfo *exception)
A description of each parameter follows:
image_info
The image info.
blob
The address of a character stream in one of the image formats understood by ImageMagick.
length
This size_t integer reflects the length in bytes of the blob.
exception
Return any errors or warnings in this structure.
DestroyBlob
DestroyBlob() deallocates memory associated with a blob.
The format of the DestroyBlob method is:
void DestroyBlob(Image *image)
A description of each parameter follows:
image
The image.
DetachBlob
DetachBlob() detaches a blob from the BlobInfo structure.
The format of the DetachBlob method is:
unsigned char *DetachBlob(BlobInfo *blob_info)
A description of each parameter follows:
blob_info
Specifies a pointer to a BlobInfo structure.
FileToBlob
FileToBlob() returns the contents of a file as a blob.  It returns the file as a blob and its length.  If an error occurs, NULL is returned.
The format of the FileToBlob method is:
unsigned char *FileToBlob(const char *filename,size_t *length,
ExceptionInfo *exception)
A description of each parameter follows:
blob
FileToBlob() returns the contents of a file as a blob.  If an error occurs NULL is returned.
filename
The filename.
length
This pointer to a size_t integer sets the initial length of the blob.  On return, it reflects the actual length of the blob.
exception
Return any errors or warnings in this structure.
GetBlobError
GetBlobError() returns MagickTrue if the blob associated with the specified image encountered an error.
The format of the GetBlobError method is:
MagickBooleanType GetBlobError(const Image *image)
A description of each parameter follows:
image
The image.
GetBlobFileHandle
GetBlobFileHandle() returns the file handleassociated with the image blob.
The format of the GetBlobFile method is:
FILE *GetBlobFileHandle(const Image *image)
A description of each parameter follows:
image
The image.
GetBlobInfo
GetBlobInfo() initializes the BlobInfo structure.
The format of the GetBlobInfo method is:
void GetBlobInfo(BlobInfo *blob_info)
A description of each parameter follows:
blob_info
Specifies a pointer to a BlobInfo structure.
GetBlobStreamData
GetBlobStreamData() returns the stream data for the image.
The format of the GetBlobStreamData method is:
unsigned char *GetBlobStreamData(const Image *image)
A description of each parameter follows:
image
The image.
GetBlobStreamHandler
GetBlobStreamHandler() returns the stream handler for the image.
The format of the GetBlobStreamHandler method is:
StreamHandler GetBlobStreamHandler(const Image *image)
A description of each parameter follows:
image
The image.
ImageToBlob
ImageToBlob() implements direct to memory image formats.  It returns the image as a blob and its length.  The magick member of the ImageInfo structure determines the format of the returned blob (GIF, JPEG,  PNG, etc.)
The format of the ImageToBlob method is:
unsigned char *ImageToBlob(const ImageInfo *image_info,Image *image,
size_t *length,ExceptionInfo *exception)
A description of each parameter follows:
image_info
The image info.
image
The image.
length
This pointer to a size_t integer sets the initial length of the blob.  On return, it reflects the actual length of the blob.
exception
Return any errors or warnings in this structure.
ImageToFile
ImageToFile() writes an image to a file.  It returns MagickFalse if an error occurs otherwise MagickTrue.
The format of the ImageToFile method is:
MagickBooleanType ImageToFile(Image *image,char *filename,
ExceptionInfo *exception)
A description of each parameter follows:
image
The image.
filename
Write the image to this file.
exception
Return any errors or warnings in this structure.
ImagesToBlob
ImagesToBlob() implements direct to memory image formats.  It returns the image sequence as a blob and its length.  The magick member of the ImageInfo structure determines the format of the returned blob (GIF, JPEG,  PNG, etc.)
Note, some image formats do not permit multiple images to the same image stream (e.g. JPEG).  in this instance, just the first image of the sequence is returned as a blob.
The format of the ImagesToBlob method is:
unsigned char *ImagesToBlob(const ImageInfo *image_info,Image *images,
size_t *length,ExceptionInfo *exception)
A description of each parameter follows:
image_info
The image info.
images
The image list.
length
This pointer to a size_t integer sets the initial length of the blob.  On return, it reflects the actual length of the blob.
exception
Return any errors or warnings in this structure.
IsBlobExempt
IsBlobExempt() returns true if the blob is exempt.
The format of the IsBlobExempt method is:
MagickBooleanType IsBlobExempt(const Image *image)
A description of each parameter follows:
image
The image.
IsBlobSeekable
IsBlobSeekable() returns true if the blob is seekable.
The format of the IsBlobSeekable method is:
MagickBooleanType IsBlobSeekable(const Image *image)
A description of each parameter follows:
image
The image.
IsBlobTemporary
IsBlobTemporary() returns true if the blob is temporary.
The format of the IsBlobTemporary method is:
MagickBooleanType IsBlobTemporary(const Image *image)
A description of each parameter follows:
image
The image.
PingBlob
PingBlob() returns all the attributes of an image or image sequence except for the pixels.  It is much faster and consumes far less memory than BlobToImage().  On failure, a NULL image is returned and exception describes the reason for the failure.
The format of the PingBlob method is:
Image *PingBlob(const ImageInfo *image_info,const void *blob,
const size_t length,ExceptionInfo *exception)
A description of each parameter follows:
image_info
The image info.
blob
The address of a character stream in one of the image formats understood by ImageMagick.
length
This size_t integer reflects the length in bytes of the blob.
exception
Return any errors or warnings in this structure.
ReadBlobStream
ReadBlobStream() read data from an image stream.  If the stream is memory-mapped, a pointer is returned to the in-memory data otherwise the data is copied to the user supplied buffer and its location is returned.
The format of the ReadBlobStream method is:
const unsigned char *ReadBlobStream(Image *image,const size_t length,
unsigned char *data,ssize_t *count)
A description of each parameter follows:
image
The image.
length
The number of bytes to read from the image stream.
data
The user supplied buffer greater or equal to length bytes.
count
Returns the number of bytes read.
SetBlobExempt
SetBlobExempt() sets the blob exempt status.
The format of the SetBlobExempt method is:
MagickBooleanType SetBlobExempt(const Image *image,
const MagickBooleanType exempt)
A description of each parameter follows:
image
The image.
exempt
Set to true if this blob is exempt from being closed.
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