Added umax_pp backend (patch from St�phane Voltz

<svoltz@wanadoo.fr>).

backend/Makefile.in

@@ -54,8 +54,8 @@ COMPILE = $(CC) -c $(CFLAGS) $(DEFS) $(INCLUDES) $(CPPFLAGS)
 
 PRELOADABLE_BACKENDS = abaton agfafocus apple artec as6e avision bh canon \
         coolscan dc25 @DC210@ @DC240@ dmc epson hp m3096g microtek microtek2 \
-	mustek mustek_pp nec @NET@ pie @PINT@ plustek @PNM@ @QCAM@ ricoh s9036 \
-	sharp snapscan sp15c st400 tamarack umax @V4L@
+	mustek mustek_pp nec @NET@ pie @PINT@ plustek @PNM@ @QCAM@ ricoh \
+	s9036 sharp snapscan sp15c st400 tamarack umax umax_pp @V4L@
 ALL_BACKENDS = $(PRELOADABLE_BACKENDS) dll
 
 LIBS = $(addprefix libsane-,$(addsuffix .la,$(ALL_BACKENDS)))
@@ -155,6 +155,7 @@ libsane.la: dll.lo dll-s.lo $(EXTRA) $(addsuffix .lo,$(DLL_PRELOAD)) $(LIBOBJS)
 # additional dependencies
 
 EXTRA_hp = hp-accessor hp-device hp-handle hp-hpmem hp-option hp-scl
+EXTRA_umax_pp = umax_pp_low umax_pp_mid
 EXTRA_dc210 = djpeg
 EXTRA_dc240 = djpeg
 
@@ -262,6 +263,9 @@ libsane-umax.la: ../sanei/sanei_config2.lo
 libsane-umax.la: ../sanei/sanei_constrain_value.lo
 libsane-umax.la: ../sanei/sanei_scsi.lo
 libsane-v4l.la: ../sanei/sanei_constrain_value.lo
+libsane-umax_pp.la: $(addsuffix .lo,$(EXTRA_umax_pp))
+libsane-umax_pp.la: ../sanei/sanei_constrain_value.lo
+libsane-umax_pp.la: ../sanei/sanei_config2.lo
 
 ifneq ($(DLL_PRELOAD),)
 # need to make dll dependent on all sanei files:

backend/dll.conf

@@ -33,4 +33,5 @@ snapscan
 sp15c
 tamarack
 umax
+#umax_pp
 v4l

backend/umax_pp-s.c

@@ -0,0 +1,83 @@
+#include "sane/sanei_backend.h"
+
+/* Now define the wrappers (we could use aliases here, but go for
+   robustness for now...: */
+
+SANE_Status
+sane_init (SANE_Int *vc, SANE_Auth_Callback cb)
+{
+  return ENTRY(init) (vc, cb);
+}
+
+SANE_Status
+sane_get_devices (const SANE_Device ***dl, SANE_Bool local)
+{
+  return ENTRY(get_devices) (dl, local);
+}
+
+SANE_Status
+sane_open (SANE_String_Const name, SANE_Handle *h)
+{
+  return ENTRY(open) (name, h);
+}
+
+const SANE_Option_Descriptor *
+sane_get_option_descriptor (SANE_Handle h, SANE_Int opt)
+{
+  return ENTRY(get_option_descriptor) (h, opt);
+}
+
+SANE_Status
+sane_control_option (SANE_Handle h, SANE_Int opt, SANE_Action act,
+		     void *val, SANE_Word *info)
+{
+  return ENTRY(control_option) (h, opt, act, val, info);
+}
+
+SANE_Status
+sane_get_parameters (SANE_Handle h, SANE_Parameters *parms)
+{
+  return ENTRY(get_parameters) (h, parms);
+}
+
+SANE_Status
+sane_start (SANE_Handle h)
+{
+  return ENTRY(start) (h);
+}
+
+SANE_Status
+sane_read (SANE_Handle h, SANE_Byte *buf, SANE_Int maxlen, SANE_Int *lenp)
+{
+  return ENTRY(read) (h, buf, maxlen, lenp);
+}
+
+SANE_Status
+sane_set_io_mode (SANE_Handle h, SANE_Bool non_blocking)
+{
+  return ENTRY(set_io_mode) (h, non_blocking);
+}
+
+SANE_Status
+sane_get_select_fd (SANE_Handle h, SANE_Int *fdp)
+{
+  return ENTRY(get_select_fd) (h, fdp);
+}
+
+void
+sane_cancel (SANE_Handle h)
+{
+  ENTRY(cancel) (h);
+}
+
+void
+sane_close (SANE_Handle h)
+{
+  ENTRY(close) (h);
+}
+
+void
+sane_exit (void)
+{
+  ENTRY(exit) ();
+}

backend/umax_pp.desc

@@ -0,0 +1,57 @@
+;
+; SANE Backend specification file
+;
+; It's basically emacs-lisp --- so ";" indicates comment to end of line.
+; All syntactic elements are keyword tokens, followed by a string or
+;  keyword argument, as specified.
+;
+; ":backend" *must* be specified.
+; All other information is optional (but what good is the file without it?).
+;
+
+:backend "umax_pp"              ; name of backend
+:version "1"                      ; version of backend
+:status :new                    ; :alpha, :beta, :stable, :new
+:manpage "sane-umax_pp"         ; name of manpage (if it exists)
+                                  ; backend's web page
+:url "http://umax1220p.sourceforge.net/"
+
+:devicetype :scanner              ; start of a list of devices....
+                                  ; other types:  :stillcam, :vidcam,
+                                  ;               :meta, :api
+
+:mfg "UMAX"                     ; name a manufacturer
+:url "http://www.umax.com/"
+
+; These scanners are known to have the same ASIC. What scanners work
+; isn't actually known. Also the interfaces are only guessed
+
+:model "Astra 1220P"
+:interface "Parport (EPP)"
+:comment "works"
+
+:model "Astra 2000P"
+:interface "Parport (EPP)"
+:comment "works"
+
+:model "Astra 1600P"
+:interface "Parport (EPP)"
+:comment "works"
+
+:model "ASTRA 610 P"
+:interface "Parport (EPP)"
+:comment "don't work (yet)"
+
+
+:mfg "Hewlett-Packard"
+
+:model "HP 3200 C"
+:interface "Parport (EPP)"
+:comment "works (relabelled 1220P and 2000P)"
+
+
+; :comment and :url specifiers are optional after :mfg, :model, :desc,
+;  and at the top-level.
+
+
+