SANEI 1.3.1.72-4c77c
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Convenience macros and function declarations for backends. More...
Go to the source code of this file.
Public macros and functions | |
#define | __sane_unused__ |
Mark parameters as potentially unused. | |
#define | NELEMS(a) |
Return number of elements of an array. | |
#define | STRINGIFY1(x) |
Mark parameters as potentially unused. | |
#define | STRINGIFY(x) |
Turn parameter into string. | |
#define | PASTE1(x, y) |
Mark parameters as potentially unused. | |
#define | PASTE(x, y) |
Concatenate parameters. | |
SANE_Status | sanei_check_value (const SANE_Option_Descriptor *opt, void *value) |
Check the constraints of a SANE option. More... | |
SANE_Status | sanei_constrain_value (const SANE_Option_Descriptor *opt, void *value, SANE_Word *info) |
Check the constraints of a SANE option and adjust its value if necessary. More... | |
Convenience macros and function declarations for backends.
SANE_Status sanei_check_value | ( | const SANE_Option_Descriptor * | opt, |
void * | value | ||
) |
Check the constraints of a SANE option.
opt | option to check |
value | value of the option |
SANE_Status sanei_constrain_value | ( | const SANE_Option_Descriptor * | opt, |
void * | value, | ||
SANE_Word * | info | ||
) |
Check the constraints of a SANE option and adjust its value if necessary.
Depending on the type of the option and constraint, value is modified to fit inside constraint.
opt | option to check |
value | value of the option |
info | info is set to SANE_INFO_INEXACT if value was changed |