Attachment 41539 Details for Bug 32746 – disable jpx mime-data if stream dict specifies a cs

[patch] disable jpx mime-data if stream dict specifies a cs

0001-cairo-Don-t-set-JPX-mime-data-if-the-stream-specifie.patch (text/plain), 2.91 KB, created by Adrian Johnson on 2010-12-30 17:52:51 UTC

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Creator: Adrian Johnson

Created: 2010-12-30 17:52:51 UTC

Size: 2.91 KB

patch

obsolete

>From fe1361f5a2af6783c30cf0790308aec9c97b8f8e Mon Sep 17 00:00:00 2001
>From: Adrian Johnson <ajohnson@redneon.com>
>Date: Fri, 31 Dec 2010 12:11:40 +1030
>Subject: [PATCH] cairo: Don't set JPX mime data if the stream specifies a colorspace
>
>The stream colorspace overides, and may be different to, the
>colorspace in the JPX data.
>
>https://bugs.freedesktop.org/show_bug.cgi?id=32746
>---
> poppler/CairoOutputDev.cc |   44 +++++++++++++++++++++++++++++---------------
> poppler/CairoOutputDev.h  |    1 +
> 2 files changed, 30 insertions(+), 15 deletions(-)
>
>diff --git a/poppler/CairoOutputDev.cc b/poppler/CairoOutputDev.cc
>index 0507f8c..c01c3fc 100644
>--- a/poppler/CairoOutputDev.cc
>+++ b/poppler/CairoOutputDev.cc
>@@ -2283,6 +2283,34 @@ GBool CairoOutputDev::getStreamData (Stream *str, char **buffer, int *length)
>   return gTrue;
> }
> 
>+void CairoOutputDev::setMimeData(Stream *str, cairo_surface_t *image)
>+{
>+  char *strBuffer;
>+  int len;
>+  Object obj;
>+
>+  if (!printing || !(str->getKind() == strDCT || str->getKind() == strJPX))
>+    return;
>+
>+  // colorspace in stream dict may be different from colorspace in jpx
>+  // data
>+  if (str->getKind() == strJPX) {
>+    if (str->getDict()->lookup("ColorSpace", &obj))
>+      return;
>+  }
>+
>+  if (getStreamData (str->getNextStream(), &strBuffer, &len)) {
>+    cairo_status_t st;
>+    st = cairo_surface_set_mime_data (image,
>+				      str->getKind() == strDCT ?
>+				      CAIRO_MIME_TYPE_JPEG : CAIRO_MIME_TYPE_JP2,
>+				      (const unsigned char *)strBuffer, len,
>+				      gfree, strBuffer);
>+    if (st)
>+      gfree (strBuffer);
>+  }
>+}
>+
> void CairoOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
> 			       int width, int height,
> 			       GfxImageColorMap *colorMap,
>@@ -2396,21 +2424,7 @@ void CairoOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
> 
>   cairo_surface_mark_dirty (image);
> 
>-  if (printing && (str->getKind() == strDCT || str->getKind() == strJPX)) {
>-    char *strBuffer;
>-    int len;
>-
>-    if (getStreamData (str->getNextStream(), &strBuffer, &len)) {
>-      cairo_status_t st;
>-      st = cairo_surface_set_mime_data (image,
>-					str->getKind() == strDCT ?
>-					CAIRO_MIME_TYPE_JPEG : CAIRO_MIME_TYPE_JP2,
>-					(const unsigned char *)strBuffer, len,
>-					gfree, strBuffer);
>-      if (st)
>-        gfree (strBuffer);
>-    }
>-  }
>+  setMimeData(str, image);
> 
>   pattern = cairo_pattern_create_for_surface (image);
>   cairo_surface_destroy (image);
>diff --git a/poppler/CairoOutputDev.h b/poppler/CairoOutputDev.h
>index 26efadc..30acf81 100644
>--- a/poppler/CairoOutputDev.h
>+++ b/poppler/CairoOutputDev.h
>@@ -275,6 +275,7 @@ protected:
>   cairo_filter_t getFilterForSurface(cairo_surface_t *image,
> 				     GBool interpolate);
>   GBool getStreamData (Stream *str, char **buffer, int *length);
>+  void setMimeData(Stream *str, cairo_surface_t *image);
>   
>   GfxRGB fill_color, stroke_color;
>   cairo_pattern_t *fill_pattern, *stroke_pattern;
>-- 
>1.7.1
>

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