#include <tiffio.h>
typedef TIFFOpenOptions TIFFOpenOptions
TIFFOpenOptions *TIFFOpenOptionsAlloc(void)
void TIFFOpenOptionsFree(TIFFOpenOptions*)
void TIFFOpenOptionsSetMaxSingleMemAlloc(TIFFOpenOptions *opts, tmsize_t max_single_mem_alloc)
void TIFFOpenOptionsSetErrorHandlerExtR(TIFFOpenOptions *opts, TIFFErrorHandlerExtR handler, void *errorhandler_user_data)
void TIFFOpenOptionsSetWarningHandlerExtR(TIFFOpenOptions *opts, TIFFErrorHandlerExtR handler, void *warnhandler_user_data)


TIFFOpenOptions is an opaque structure which can be passed to the TIFF open"Ext" functions to define some libtiff internal settings. The settings are the maximum single memory allocation limit and per-TIFF handle (re-entrant) error handler and warning handler functions. For those handler a pointer to a custom defined data structure user_data can be given along.

TIFFOpenOptionsAlloc() allocates memory for the TIFFOpenOptions opaque structure and returns a TIFFOpenOptions pointer.

TIFFOpenOptionsFree() releases the allocated memory for TIFFOpenOptions. The allocated memory for TIFFOpenOptions can be released straight after successful execution of the related TIFF open"Ext" functions like TIFFOpenExt().

TIFFOpenOptionsSetMaxSingleMemAlloc() sets parameter for the maximum single memory limit in byte that libtiff internal memory allocation functions are allowed to request per call.

TIFFOpenOptionsSetErrorHandlerExtR() sets the function pointer to an application-specific and per-TIFF handle (re-entrant) error handler. Furthermore, a pointer to a custom defined data structure errorhandler_user_data can be passed. This error handler is invoked through TIFFErrorExtR() and the errorhandler_user_data pointer is given along. The errorhandler_user_data argument may be NULL.

TIFFOpenOptionsSetWarningHandlerExtR() works like TIFFOpenOptionsSetErrorHandlerExtR() but for the warning handler, which is invoked through TIFFWarningExtR()


This functionality was introduced with libtiff 4.5.

See also

libtiff (3tiff), TIFFOpen (3tiff), TIFFError (3tiff), TIFFWarning (3tiff)