Initial import of sane-backends version 1.0.24-1.2

1 files changed, 179 insertions, 0 deletions

diff --git a/include/sane/sanei_backend.h b/include/sane/sanei_backend.h
new file mode 100644
index 0000000..1b5afe2
--- /dev/null
+++ b/include/sane/sanei_backend.h
@@ -0,0 +1,179 @@
+/** @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
+ */
+
+
+/*
+ * Compiler related options
+ */
+
+/** Mark unused variables/parameters
+ *
+ * Tells the compiler a variable is unused, so the compiler doesn't spit a warning. 
+ */
+#ifdef __GNUC__
+#define __sane_unused__ __attribute__((unused))
+#else
+#define __sane_unused__
+#endif
+
+/** @name Compatibility macros
+ * @{
+ */
+#include <sane/sanei_debug.h>
+
+#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:
+ * @{
+ */
+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);
+
+#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