PDFlib Text Extraction Toolkit (TET) Manual

C++ const char *get_image_data(int doc, size_t *length, int imageid, string optlist)
C# Java final byte[ ] get_image_data(int doc, int imageid, String optlist)
Perl PHP string TET_get_image_data(resource tet, long doc, long imageid, string optlist)
VB Function get_image_data(doc As Long, imageid As Long, optlist As String)
C
const char * TET_get_image_data(TET *tet, int doc, size_t *length, int imageid, const char *optlist)
Retrieve image data from memory.
doc A valid document handle obtained with TET_open_document*( ).
length (C and C++ language bindings only) C-style pointer to a memory location where
the length of the returned data in bytes will be stored.
imageid The pCOS ID of the image. This ID can be retrieved from the imageid field after
a successful call to TET_get_image_info( ), or by looping over all entries in the images
pCOS array (there are length:images entries in this array).
optlist An option list specifying image-related options according to Table 10.12. The
following options can be used: compression, format, keepxmp
Returns
Details
Bindings
The data representing the image according to the specified options. In case of an error
(including images which cannot be extracted) a NULL pointer will be returned in C and
C++, and empty data in other language bindings. If an error happens it is recommended
to call TET_get_errmsg( ) to find out more details about the error.
This function will convert the pixel data for the image with the specified pCOS ID to one
of several image formats, and make the data available in memory.
COM: Most client programs will use the Variant type to hold the image data.
C and C++ language bindings: The returned data buffer can be used until the next call to
this function.
148 Chapter 10: TET Library API Reference