File 16-bit-support.patch of Package iscan

From 9afeb0460dcb491ac6cba43519b368ca6327255c Mon Sep 17 00:00:00 2001
From: Henrik Andersson <henrik.4e@gmail.com>
Date: Tue, 4 Dec 2012 08:29:05 +0100
Subject: [PATCH 1/2] Add support for 16 bit color values solves issue were a
 16 bit scan abruptly stops such as with V600.

---
 backend/dip-obj.c | 72 ++++++++++++++++++++++++++++++++---------------
 1 file changed, 50 insertions(+), 22 deletions(-)

diff --git a/backend/dip-obj.c b/backend/dip-obj.c
index 021cb01..ce0d4ea 100644
--- a/backend/dip-obj.c
+++ b/backend/dip-obj.c
@@ -555,44 +555,72 @@ dip_change_GRB_to_RGB (const void *self, const buffer *buf)
   return;
 }
 
-/*! \todo Add support for 16 bit color values (#816).
- */
 void
 dip_apply_color_profile (const void *self, const buffer *buf,
                          const double profile[9])
 {
   SANE_Int i;
-  SANE_Byte *r_buf, *g_buf, *b_buf;
   double red, grn, blu;
 
-  SANE_Byte *data;
   SANE_Int size;
 
   require (dip == self && buf && profile);
-  require (8 == buf->ctx.depth);
+  require (buf->ctx.depth == 8 || buf->ctx.depth == 16);
 
   if (SANE_FRAME_RGB != buf->ctx.format)
     return;
 
-  data = buf->ptr;
-  size = buf->end - buf->ptr;
+  if (buf->ctx.depth == 8)
+  {
+    SANE_Byte *r_buf, *g_buf, *b_buf;
+    SANE_Byte *data;
+
+    data = buf->ptr;
+    size = buf->end - buf->ptr;
 
-  for (i = 0; i < size / 3; i++)
+    for (i = 0; i < size / 3; i++)
+    {
+      r_buf = data;
+      g_buf = data + 1;
+      b_buf = data + 2;
+
+      red =
+	profile[0] * (*r_buf) + profile[1] * (*g_buf) + profile[2] * (*b_buf);
+      grn =
+	profile[3] * (*r_buf) + profile[4] * (*g_buf) + profile[5] * (*b_buf);
+      blu =
+	profile[6] * (*r_buf) + profile[7] * (*g_buf) + profile[8] * (*b_buf);
+
+      *data++ = clamp (red, 0, 255);
+      *data++ = clamp (grn, 0, 255);
+      *data++ = clamp (blu, 0, 255);
+    }
+  }
+  else if (buf->ctx.depth == 16)
   {
-    r_buf = data;
-    g_buf = data + 1;
-    b_buf = data + 2;
-
-    red =
-      profile[0] * (*r_buf) + profile[1] * (*g_buf) + profile[2] * (*b_buf);
-    grn =
-      profile[3] * (*r_buf) + profile[4] * (*g_buf) + profile[5] * (*b_buf);
-    blu =
-      profile[6] * (*r_buf) + profile[7] * (*g_buf) + profile[8] * (*b_buf);
-
-    *data++ = clamp (red, 0, 255);
-    *data++ = clamp (grn, 0, 255);
-    *data++ = clamp (blu, 0, 255);
+    SANE_Word *r_buf, *g_buf, *b_buf;
+    SANE_Word *data;
+
+    data = (SANE_Word *)buf->ptr;
+    size = buf->end - buf->ptr;
+
+    for (i = 0; i < size / 3; i++)
+    {
+      r_buf = data;
+      g_buf = data + 1;
+      b_buf = data + 2;
+
+      red =
+	profile[0] * (*r_buf) + profile[1] * (*g_buf) + profile[2] * (*b_buf);
+      grn =
+	profile[3] * (*r_buf) + profile[4] * (*g_buf) + profile[5] * (*b_buf);
+      blu =
+	profile[6] * (*r_buf) + profile[7] * (*g_buf) + profile[8] * (*b_buf);
+
+      *data++ = clamp (red, 0, 65535);
+      *data++ = clamp (grn, 0, 65535);
+      *data++ = clamp (blu, 0, 65535);
+    }
   }
 }
 
-- 
2.50.1

From 007ca826a7b4e59d2706544ddd2a113ded3518c6 Mon Sep 17 00:00:00 2001
From: Henrik Andersson <hean01@users.sourceforge.net>
Date: Tue, 4 Dec 2012 22:14:55 +0100
Subject: [PATCH 2/2] Use a correct data size for 16bit data SANE_Word is int.

---
 backend/dip-obj.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/backend/dip-obj.c b/backend/dip-obj.c
index ce0d4ea..cbbc1df 100644
--- a/backend/dip-obj.c
+++ b/backend/dip-obj.c
@@ -598,13 +598,11 @@ dip_apply_color_profile (const void *self, const buffer *buf,
   }
   else if (buf->ctx.depth == 16)
   {
-    SANE_Word *r_buf, *g_buf, *b_buf;
-    SANE_Word *data;
+    uint16_t *r_buf, *g_buf, *b_buf;
+    uint16_t *data;
 
-    data = (SANE_Word *)buf->ptr;
-    size = buf->end - buf->ptr;
-
-    for (i = 0; i < size / 3; i++)
+    data = (uint16_t *)buf->ptr;
+    while(data < buf->end)
     {
       r_buf = data;
       g_buf = data + 1;
-- 
2.50.1