Bug#664966: Add an option to disable T3CCITT encoding
Package: ghostscript
Version: 9.05~dfsg-3
Severity: important
Tags: patch
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Hi!
cupsfilters 1.0.7 include a fix for Brother printers to workaround a
bug in the Postscript interpreter:
- pdftops: Additional workaround for a bug in the PostsSript interpreters
of Brother printers, calling Ghostscript with special command line
options (LP: #955553).
Unfortunately, this fix relies on a patch in Ghostscript which is not
applied in Debian. Please, apply it.
Thanks.
- -- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (101, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-2-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.utf8, LC_CTYPE=fr_FR.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages ghostscript depends on:
ii debconf [debconf-2.0] 1.5.42
ii debianutils 4.2.1
ii gsfonts 1:8.11+urwcyr1.0.7~pre44-4.2
ii libc6 2.13-27
ii libgs9 9.05~dfsg-3
ghostscript recommends no packages.
Versions of packages ghostscript suggests:
ii ghostscript-cups 9.05~dfsg-3
ii ghostscript-x <none>
ii hpijs 3.12.2-1
- -- no debconf information
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--- a/base/gdevpdfb.c
+++ b/base/gdevpdfb.c
@@ -293,16 +293,18 @@
* that would need to be passed.
*/
if (pres) {
- /*
- * Always use CCITTFax 2-D for character bitmaps. It takes less
- * space to invert the data with Decode than to set BlackIs1.
- */
- float d0 = image.Decode[0];
+ if (!pdev->NoT3CCITT) {
+ /*
+ * Always use CCITTFax 2-D for character bitmaps. It takes less
+ * space to invert the data with Decode than to set BlackIs1.
+ */
+ float d0 = image.Decode[0];
- image.Decode[0] = image.Decode[1];
- image.Decode[1] = d0;
- psdf_CFE_binary(&writer.binary[0], image.Width, image.Height, true);
- invert ^= 0xff;
+ image.Decode[0] = image.Decode[1];
+ image.Decode[1] = d0;
+ psdf_CFE_binary(&writer.binary[0], image.Width, image.Height, true);
+ invert ^= 0xff;
+ }
} else {
/* Use the Distiller compression parameters. */
pdev->ParamCompatibilityLevel = pdev->CompatibilityLevel;
--- a/base/gdevpdfb.h
+++ b/base/gdevpdfb.h
@@ -266,5 +266,6 @@
PDF_FOR_OPDFREAD, /* AllowPSRepeatFunctions */
true, /* IsDistiller (true even for ps2write!) */
!PDF_FOR_OPDFREAD, /* PreserveSMask */
- !PDF_FOR_OPDFREAD /* PreserveTrMode */
+ !PDF_FOR_OPDFREAD, /* PreserveTrMode */
+ false /* NoT3CCITT */
};
--- a/base/gdevpdfp.c
+++ b/base/gdevpdfp.c
@@ -121,6 +121,7 @@
pi("IsDistiller", gs_param_type_bool, IsDistiller),
pi("PreserveSMask", gs_param_type_bool, PreserveSMask),
pi("PreserveTrMode", gs_param_type_bool, PreserveTrMode),
+ pi("NoT3CCITT", gs_param_type_bool, NoT3CCITT),
#undef pi
gs_param_item_end
};
--- a/base/gdevpdfx.h
+++ b/base/gdevpdfx.h
@@ -704,6 +704,11 @@
bool IsDistiller;
bool PreserveSMask;
bool PreserveTrMode;
+ bool NoT3CCITT; /* A bug in Brother printers causes CCITTFaxDecode
+ * to fail, especially with small amounts of data.
+ * This parameter is present only to allow
+ * ps2write output to work on those pritners.
+ */
};
#define is_in_page(pdev)\
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