[ghostscript/f20] Use upstream patch to fix duplex for some devices (bug #1068896).

[Tim Waugh]

commit 68499706a5951da36260a99d6c1bed353495bd32
Author: Tim Waugh <twaugh at redhat.com>
Date:   Thu Feb 27 16:16:13 2014 +0000

    Use upstream patch to fix duplex for some devices (bug #1068896).
    
    Resolves: rhbz#1068896

 ghostscript-duplex.patch |   66 ++++++++++++++++++++++++++++++++++++++++++++++
 ghostscript.spec         |    9 +++++-
 2 files changed, 74 insertions(+), 1 deletions(-)
---
diff --git a/ghostscript-duplex.patch b/ghostscript-duplex.patch
new file mode 100644
index 0000000..cf261cf
--- /dev/null
+++ b/ghostscript-duplex.patch
@@ -0,0 +1,66 @@
+diff -up ghostscript-9.10/devices/vector/opdfread.h.duplex ghostscript-9.10/devices/vector/opdfread.h
+--- ghostscript-9.10/devices/vector/opdfread.h.duplex	2013-08-30 11:37:28.000000000 +0100
++++ ghostscript-9.10/devices/vector/opdfread.h	2014-02-27 15:59:45.986847087 +0000
+@@ -734,10 +734,27 @@ const char *opdfread_ps [] = {
+ "0 0}ifelse\n",
+ "round cvi 2 index round cvi eq\n",
+ "exch round cvi 3 index round cvi eq and{\n",
++"//PDFR_DEBUG{(PageSize matches request) == flush}if\n",
+ "pop pop}{\n",
++"/MediaRequested where {\n",
++"//PDFR_DEBUG{(MediaRequested is true, check against new request) == flush}if\n",
++"/MediaRequested get aload pop\n",
++"round cvi 2 index round cvi eq\n",
++"exch round cvi 3 index round cvi eq and\n",
++"{//PDFR_DEBUG{(MediaRequested same as current request, ignore) == flush}if pop pop false}\n",
++"{//PDFR_DEBUG{(MediaRequested different to current request) == flush}if true}ifelse\n",
++"}{\n",
++"//PDFR_DEBUG{(No MediaRequested yet) == flush}if\n",
++"true\n",
++"}ifelse\n",
++"{\n",
++"//PDFR_DEBUG{(Setting pagesize) == flush}if\n",
+ "2 array astore\n",
++"dup /MediaRequested exch def\n",
+ "<< exch /PageSize exch >> setpagedevice\n",
+-"} ifelse\n",
++"/pagesave save def\n",
++"}if\n",
++"}ifelse\n",
+ "userdict/PDFR_InitialGS gstate put\n",
+ "setglobal\n",
+ "}if\n",
+diff -up ghostscript-9.10/lib/opdfread.ps.duplex ghostscript-9.10/lib/opdfread.ps
+--- ghostscript-9.10/lib/opdfread.ps.duplex	2013-08-30 11:37:28.000000000 +0100
++++ ghostscript-9.10/lib/opdfread.ps	2014-02-27 15:59:45.987847093 +0000
+@@ -896,13 +896,27 @@ currentdict end readonly def
+       0 0                                               % dummy page size values if not known
+     }ifelse
+                                                         % bw bh px0 py0 bw bh bool bw bh Width Height
+-    round cvi 2 index round cvi                         % bw bh px0 py0 bw bh bool bw bh Width bool
++    round cvi 2 index round cvi eq                      % bw bh px0 py0 bw bh bool bw bh Width bool
+     exch round cvi 3 index round cvi eq and             % bw bh px0 py0 bw bh bool bw bh bool
+     {                                                   % Page Size unchanged, do not emit setpagedevice
+       pop pop                                           % bw bh px0 py0 bw bh bool
+     } {
+-      2 array astore                                    % bw bh px0 py0 bw bh bool []
+-      << exch /PageSize exch >> setpagedevice           % bw bh px0 py0 bw bh bool
++      /MediaRequested where {
++                                                        % bw bh px0 py0 bw bh
++        /MediaRequested get aload pop                   % bw bh px0 py0 bw bh Width Height
++        round cvi 2 index round cvi eq                  % bw bh px0 py0 bw bh bool bw bh Width bool
++        exch round cvi 3 index round cvi eq and         % bw bh px0 py0 bw bh bool bw bh bool
++        {pop pop false}                                         % We already requested this media size, so don't re-request
++        {true} ifelse                                   % Media request different to last request
++      } {
++        true                                            % No stored media request, so apply setpagedevice
++      } ifelse
++      {
++        2 array astore                                    % bw bh px0 py0 bw bh bool []
++        dup /MediaRequested exch def
++        << exch /PageSize exch >> setpagedevice           % bw bh px0 py0 bw bh bool
++        /pagesave save def
++      } if
+     } ifelse
+     userdict /PDFR_InitialGS gstate put
+     setglobal                                           % bw bh px0 py0 bw bh
diff --git a/ghostscript.spec b/ghostscript.spec
index d5240c8..5a9259c 100644
--- a/ghostscript.spec
+++ b/ghostscript.spec
@@ -5,7 +5,7 @@ Summary: A PostScript interpreter and renderer
 Name: ghostscript
 Version: %{gs_ver}
 
-Release: 5%{?dist}
+Release: 6%{?dist}
 
 # Included CMap data is Redistributable, no modification permitted,
 # see http://bugzilla.redhat.com/487510
@@ -32,6 +32,7 @@ Patch8: ghostscript-gdevcups-debug-uninit.patch
 Patch9: ghostscript-wrf-snprintf.patch
 Patch10: ghostscript-gs694154.patch
 Patch11: ghostscript-gs694809.patch
+Patch12: ghostscript-duplex.patch
 
 Requires: urw-fonts >= 1.1, ghostscript-fonts
 Requires: poppler-data
@@ -138,6 +139,9 @@ rm -rf expat freetype icclib jasper jpeg jpegxr lcms lcms2 libpng openjpeg zlib
 # Use upstream patch to fix gs segfault (bug #1039718).
 %patch11 -p1 -b .gs694809
 
+# Use upstream patch to fix duplex for some devices (bug #1068896).
+%patch12 -p1 -b .duplex
+
 # Convert manual pages to UTF-8
 from8859_1() {
         iconv -f iso-8859-1 -t utf-8 < "$1" > "${1}_"
@@ -328,6 +332,9 @@ rm -rf $RPM_BUILD_ROOT
 %{_libdir}/libgs.so
 
 %changelog
+* Thu Feb 27 2014 Tim Waugh <twaugh at redhat.com> 9.10-6
+- Use upstream patch to fix duplex for some devices (bug #1068896).
+
 * Tue Dec 10 2013 Tim Waugh <twaugh at redhat.com> 9.10-5
 - Use upstream patches to fix gs segfaults (bug #1026428, bug #1039718).