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https://issues.apache.org/jira/browse/PDFBOX-5375?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17505254#comment-17505254
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Andreas Lehmkühler commented on PDFBOX-5375:
--------------------------------------------
How about something like this
{code}
### Eclipse Workspace Patch 1.0
#P pdfbox
Index:
src/main/java/org/apache/pdfbox/pdmodel/graphics/image/PDImageXObject.java
===================================================================
--- src/main/java/org/apache/pdfbox/pdmodel/graphics/image/PDImageXObject.java
(Revision 1898440)
+++ src/main/java/org/apache/pdfbox/pdmodel/graphics/image/PDImageXObject.java
(Arbeitskopie)
@@ -79,6 +79,8 @@
// initialize to MAX_VALUE as we prefer lower subsampling when
keeping/replacing cache.
private int cachedImageSubsampling = Integer.MAX_VALUE;
+ // indicates wether this image has an JPX-based filter applied
+ private boolean hasJPXFilter = false;
/**
* current resource dictionary (has color spaces)
@@ -142,12 +144,7 @@
List<COSName> filters = stream.getFilters();
if (!filters.isEmpty() &&
COSName.JPX_DECODE.equals(filters.get(filters.size() - 1)))
{
- try (COSInputStream is = stream.createInputStream())
- {
- DecodeResult decodeResult = is.getDecodeResult();
- stream.getCOSObject().addAll(decodeResult.getParameters());
- this.colorSpace = decodeResult.getJPXColorSpace();
- }
+ hasJPXFilter = true;
}
}
@@ -780,6 +777,17 @@
{
if (colorSpace == null)
{
+ if (hasJPXFilter)
+ {
+ PDStream stream = getStream();
+ try (COSInputStream is = stream.createInputStream())
+ {
+ DecodeResult decodeResult = is.getDecodeResult();
+ stream.getCOSObject().addAll(decodeResult.getParameters());
+ colorSpace = decodeResult.getJPXColorSpace();
+ return colorSpace;
+ }
+ }
COSBase cosBase = getCOSObject().getItem(COSName.COLORSPACE,
COSName.CS);
if (cosBase != null)
{
{code}
> Allow creating of PDFXObjectImage without accessing to the image stream
> -----------------------------------------------------------------------
>
> Key: PDFBOX-5375
> URL: https://issues.apache.org/jira/browse/PDFBOX-5375
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.25, 3.0.0 PDFBox
> Reporter: Thomas Ledoux
> Priority: Major
> Attachments: patch.txt, patch2.txt
>
>
> Currently, when a PDF embeds JPEG2000 images, the simple parsing of the file
> generates a warning
> when the code hits a call to getXObject(name) from a PDResources for a image
> without creating the
> underlining PDFXObjectImage object, related to the absence of the JAI
> third-party.
> However, when we just want to access the width or height propertis (which are
> defined outside the stream in the associated dictionnary).
> Looking at the constructor of PDFXObjectImage, it appears that the image is
> always read to retrieve the colorspace.
> The proposed patch is moved this initialization to the getColorSpace() method
> so that the object is created and the Exception will be raised only if the
> image needs to be really accessed.
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