1 files changed, 132 insertions, 0 deletions
diff --git a/include/sane/sanei_wire.h b/include/sane/sanei_wire.h
new file mode 100644
index 0000000..95be5cf
--- /dev/null
+++ b/include/sane/sanei_wire.h
@@ -0,0 +1,132 @@
+/* sane - Scanner Access Now Easy.
+   Copyright (C) 1997 David Mosberger-Tang
+   This file is part of the SANE package.
+
+   SANE is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   SANE is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+   License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with sane; see the file COPYING.  If not, write to the Free
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+   As a special exception, the authors of SANE give permission for
+   additional uses of the libraries contained in this release of SANE.
+
+   The exception is that, if you link a SANE library with other files
+   to produce an executable, this does not by itself cause the
+   resulting executable to be covered by the GNU General Public
+   License.  Your use of that executable is in no way restricted on
+   account of linking the SANE library code into it.
+
+   This exception does not, however, invalidate any other reasons why
+   the executable file might be covered by the GNU General Public
+   License.
+
+   If you submit changes to SANE to the maintainers to be included in
+   a subsequent release, you agree by submitting the changes that
+   those changes may be distributed with this exception intact.
+
+   If you write modifications of your own for SANE, it is your choice
+   whether to permit this exception to apply to your modifications.
+   If you do not wish that, delete this exception notice.
+
+   Support routines to translate internal datatypes into a wire-format
+   (used for RPCs and to save/restore options).  */
+
+#ifndef sanei_wire_h
+#define sanei_wire_h
+
+#include <sys/types.h>
+
+#define MAX_MEM (1024 * 1024)
+
+typedef enum
+  {
+    WIRE_ENCODE = 0,
+    WIRE_DECODE,
+    WIRE_FREE
+  }
+WireDirection;
+
+struct Wire;
+
+typedef void (*WireCodecFunc) (struct Wire *w, void *val_ptr);
+typedef ssize_t (*WireReadFunc) (int fd, void * buf, size_t len);
+typedef ssize_t (*WireWriteFunc) (int fd, const void * buf, size_t len);
+
+typedef struct Wire
+  {
+    int version;		/* protocol version in use */
+    WireDirection direction;
+    int status;
+    int allocated_memory;
+    struct
+      {
+	WireCodecFunc w_byte;
+	WireCodecFunc w_char;
+	WireCodecFunc w_word;
+	WireCodecFunc w_string;
+      }
+    codec;
+    struct
+      {
+	size_t size;
+	char *curr;
+	char *start;
+	char *end;
+      }
+    buffer;
+    struct
+      {
+	int fd;
+	WireReadFunc read;
+	WireWriteFunc write;
+      }
+    io;
+  }
+Wire;
+
+extern void sanei_w_init (Wire *w, void (*codec_init)(Wire *));
+extern void sanei_w_exit (Wire *w);
+extern void sanei_w_space (Wire *w, size_t howmuch);
+extern void sanei_w_void (Wire *w);
+extern void sanei_w_byte (Wire *w, SANE_Byte *v);
+extern void sanei_w_char (Wire *w, SANE_Char *v);
+extern void sanei_w_word (Wire *w, SANE_Word *v);
+extern void sanei_w_bool (Wire *w, SANE_Bool *v);
+extern void sanei_w_ptr (Wire *w, void **v, WireCodecFunc w_value,
+                         size_t value_size);
+extern void sanei_w_string (Wire *w, SANE_String *v);
+extern void sanei_w_status (Wire *w, SANE_Status *v);
+extern void sanei_w_constraint_type (Wire *w, SANE_Constraint_Type *v);
+extern void sanei_w_value_type (Wire *w, SANE_Value_Type *v);
+extern void sanei_w_unit (Wire *w, SANE_Unit *v);
+extern void sanei_w_action (Wire *w, SANE_Action *v);
+extern void sanei_w_frame (Wire *w, SANE_Frame *v);
+extern void sanei_w_range (Wire *w, SANE_Range *v);
+extern void sanei_w_range_ptr (Wire *w, SANE_Range **v);
+extern void sanei_w_device (Wire *w, SANE_Device *v);
+extern void sanei_w_device_ptr (Wire *w, SANE_Device **v);
+extern void sanei_w_option_descriptor (Wire *w, SANE_Option_Descriptor *v);
+extern void sanei_w_option_descriptor_ptr (Wire *w,
+					   SANE_Option_Descriptor **v);
+extern void sanei_w_parameters (Wire *w, SANE_Parameters *v);
+
+extern void sanei_w_array (Wire *w, SANE_Word *len, void **v,
+			   WireCodecFunc w_element, size_t element_size);
+
+extern void sanei_w_set_dir (Wire *w, WireDirection dir);
+extern void sanei_w_call (Wire *w, SANE_Word proc_num,
+			  WireCodecFunc w_arg, void *arg,
+			  WireCodecFunc w_reply, void *reply);
+extern void sanei_w_reply (Wire *w, WireCodecFunc w_reply, void *reply);
+extern void sanei_w_free (Wire *w, WireCodecFunc w_reply, void *reply);
+
+#endif /* sanei_wire_h */