[gdal-dev] GDAL and GeoPDF with Poppler (Couple issues)

[Robert Zermeno]

Ladies/Gents,

I have been using GeoPDF capability with 0.16.3 for a while and enjoy the capabilities GDAL provides.  I have wanted to add the capability to turn Layers On/Off using the features provided.  Lets assume I have a file called world.pdf that contains more than 5 Layers with sub-layers.

Project Configuration:

GDAL_repos:  9-28-2013
Poppler:         version 0.16.3
OS:              Windows XP SP3
Build:           MSVC 2008


Once built with the configuration above, I used the technique provided in the frmt_pdf.html page using gdal_translate.exe to turn off 1 Layer:

$ gdal_translate.exe c:\world.pdf out.tif --config GDAL_PDF_LAYERS_OFF "Grids"

I assume I used the proper request to only turn off "Grids" and allow all other LAYERS "On". The problem I get is when it executes more layers are turned "off" than the single layer specified.

Here are my issues:

1. How do I request to output a file that turns off one or more Layers and keeps the others on?

2. According to the frmt_pdf.html, under the Configuration Options, GDAL_PDF_LAYERS and GDAL_PDF_LAYERS_OFF both state "When this option is specified, layers not explicitly listed will be turned off".  

  I hope a quick copy & paste was performed... Which one should explicitly default  to turned On?  I would think GDAL_PDF_LAYERS_OFF.

3. When I executed gdal_translate.exefrom the request above, I got the following Error:

ERROR 1: Could not find a OCG with Ref (13:0)
ERROR 1: Could not find a OCG with Ref (30:0)
...repeats with different Ref() numbers

ERROR 1: Could not find a OCG with Ref (153:0)

This is a known Poppler issue as you can see here:
https://bugs.freedesktop.org/show_bug.cgi?id=39637

It states that the fix was added to Poppler version 0.17.2 >=
If that is true, the documentation (frmt_pdf.html) should indicate that.  I do not know if that is why my generated file is not correct as I do not know what is effect by this recoverable error mentioned above.


I have not added a ticket for GDAL before, where is the location I can add future bugs if they arise?

Robert
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