kopia lustrzana https://gitlab.com/sane-project/backends
184 wiersze
4.9 KiB
C
184 wiersze
4.9 KiB
C
/** @file sanei_backend.h
|
|
* Compatibility header file for backends
|
|
*
|
|
* This file provides some defines for macros missing on some platforms.
|
|
* It also has the SANE API entry points. sanei_backend.h must be included
|
|
* by every backend.
|
|
*
|
|
* @sa sanei.h sanei_thread.h
|
|
*/
|
|
|
|
|
|
/** @name Compatibility macros
|
|
* @{
|
|
*/
|
|
#include <sane/sanei_debug.h>
|
|
|
|
#if __STDC_VERSION__ >= 199901L
|
|
/* __func__ is provided */
|
|
#elif __GNUC__ >= 5
|
|
/* __func__ is provided */
|
|
#elif __GNUC__ >= 2
|
|
# define __func__ __FUNCTION__
|
|
#else
|
|
# define __func__ "(unknown)"
|
|
#endif
|
|
|
|
#ifdef HAVE_SYS_HW_H
|
|
/* OS/2 i/o-port access compatibility macros: */
|
|
# define inb(p) _inp8 (p)
|
|
# define outb(v,p) _outp8 ((p),(v))
|
|
# define ioperm(b,l,o) _portaccess ((b),(b)+(l)-1)
|
|
# define HAVE_IOPERM 1
|
|
#endif
|
|
|
|
#ifndef HAVE_OS2_H
|
|
#include <fcntl.h>
|
|
#ifndef O_NONBLOCK
|
|
# ifdef O_NDELAY
|
|
# define O_NONBLOCK O_NDELAY
|
|
# else
|
|
# ifdef FNDELAY
|
|
# define O_NONBLOCK FNDELAY /* last resort */
|
|
# endif
|
|
# endif
|
|
#endif
|
|
#endif /* HAVE_OS2_H */
|
|
|
|
#include <limits.h>
|
|
#ifndef PATH_MAX
|
|
# define PATH_MAX 1024
|
|
#endif
|
|
|
|
#ifndef M_PI
|
|
#define M_PI 3.14159265358979323846
|
|
#endif
|
|
|
|
#ifndef MM_PER_INCH
|
|
#define MM_PER_INCH 25.4
|
|
#endif
|
|
|
|
#ifdef HAVE_SIGPROCMASK
|
|
# define SIGACTION sigaction
|
|
#else
|
|
|
|
/* Just enough backwards compatibility that we get by in the backends
|
|
without making handstands. */
|
|
# ifdef sigset_t
|
|
# undef sigset_t
|
|
# endif
|
|
# ifdef sigemptyset
|
|
# undef sigemptyset
|
|
# endif
|
|
# ifdef sigfillset
|
|
# undef sigfillset
|
|
# endif
|
|
# ifdef sigaddset
|
|
# undef sigaddset
|
|
# endif
|
|
# ifdef sigdelset
|
|
# undef sigdelset
|
|
# endif
|
|
# ifdef sigprocmask
|
|
# undef sigprocmask
|
|
# endif
|
|
# ifdef SIG_BLOCK
|
|
# undef SIG_BLOCK
|
|
# endif
|
|
# ifdef SIG_UNBLOCK
|
|
# undef SIG_UNBLOCK
|
|
# endif
|
|
# ifdef SIG_SETMASK
|
|
# undef SIG_SETMASK
|
|
# endif
|
|
|
|
# define sigset_t int
|
|
# define sigemptyset(set) do { *(set) = 0; } while (0)
|
|
# define sigfillset(set) do { *(set) = ~0; } while (0)
|
|
# define sigaddset(set,signal) do { *(set) |= sigmask (signal); } while (0)
|
|
# define sigdelset(set,signal) do { *(set) &= ~sigmask (signal); } while (0)
|
|
# define sigaction(sig,new,old) sigvec (sig,new,old)
|
|
|
|
/* Note: it's not safe to just declare our own "struct sigaction" since
|
|
some systems (e.g., some versions of OpenStep) declare that structure,
|
|
but do not implement sigprocmask(). Hard to believe, aint it? */
|
|
# define SIGACTION sigvec
|
|
# define SIG_BLOCK 1
|
|
# define SIG_UNBLOCK 2
|
|
# define SIG_SETMASK 3
|
|
#endif /* !HAVE_SIGPROCMASK */
|
|
/* @} */
|
|
|
|
|
|
/** @name Declaration of entry points:
|
|
* @{
|
|
*/
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
extern SANE_Status ENTRY(init) (SANE_Int *, SANE_Auth_Callback);
|
|
extern SANE_Status ENTRY(get_devices) (const SANE_Device ***, SANE_Bool);
|
|
extern SANE_Status ENTRY(open) (SANE_String_Const, SANE_Handle *);
|
|
extern const SANE_Option_Descriptor *
|
|
ENTRY(get_option_descriptor) (SANE_Handle, SANE_Int);
|
|
extern SANE_Status ENTRY(control_option) (SANE_Handle, SANE_Int, SANE_Action,
|
|
void *, SANE_Word *);
|
|
extern SANE_Status ENTRY(get_parameters) (SANE_Handle, SANE_Parameters *);
|
|
extern SANE_Status ENTRY(start) (SANE_Handle);
|
|
extern SANE_Status ENTRY(read) (SANE_Handle, SANE_Byte *, SANE_Int,
|
|
SANE_Int *);
|
|
extern SANE_Status ENTRY(set_io_mode) (SANE_Handle, SANE_Bool);
|
|
extern SANE_Status ENTRY(get_select_fd) (SANE_Handle, SANE_Int *);
|
|
extern void ENTRY(cancel) (SANE_Handle);
|
|
extern void ENTRY(close) (SANE_Handle);
|
|
extern void ENTRY(exit) (void);
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#ifndef STUBS
|
|
/* Now redirect sane_* calls to backend's functions: */
|
|
|
|
#define sane_init(a,b) ENTRY(init) (a,b)
|
|
#define sane_get_devices(a,b) ENTRY(get_devices) (a,b)
|
|
#define sane_open(a,b) ENTRY(open) (a,b)
|
|
#define sane_get_option_descriptor(a,b) ENTRY(get_option_descriptor) (a,b)
|
|
#define sane_control_option(a,b,c,d,e) ENTRY(control_option) (a,b,c,d,e)
|
|
#define sane_get_parameters(a,b) ENTRY(get_parameters) (a,b)
|
|
#define sane_start(a) ENTRY(start) (a)
|
|
#define sane_read(a,b,c,d) ENTRY(read) (a,b,c,d)
|
|
#define sane_set_io_mode(a,b) ENTRY(set_io_mode) (a,b)
|
|
#define sane_get_select_fd(a,b) ENTRY(get_select_fd) (a,b)
|
|
#define sane_cancel(a) ENTRY(cancel) (a)
|
|
#define sane_close(a) ENTRY(close) (a)
|
|
#define sane_exit(a) ENTRY(exit) (a)
|
|
#endif /* STUBS */
|
|
/* @} */
|
|
|
|
/** Internationalization for SANE backends
|
|
*
|
|
* Add SANE_I18N() to all texts that can be translated.
|
|
* E.g. out_txt = SANE_I18N("Hello");
|
|
*/
|
|
#ifndef SANE_I18N
|
|
#define SANE_I18N(text) text
|
|
#endif
|
|
|
|
/** Option_Value union
|
|
*
|
|
* Convenience union to access option values given to the backend
|
|
*/
|
|
#ifndef SANE_OPTION
|
|
typedef union
|
|
{
|
|
SANE_Bool b; /**< bool */
|
|
SANE_Word w; /**< word */
|
|
SANE_Word *wa; /**< word array */
|
|
SANE_String s; /**< string */
|
|
}
|
|
Option_Value;
|
|
#define SANE_OPTION 1
|
|
#endif
|