PDF import issues with gofpdi (Failed to read xref: DecodeParms, Invalid memory address) about rm2pdf HOT 6 CLOSED

Although gofpdi has improved, there are still issues.

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Some pdf files still cause errors, unfortunately.

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I'm adding another sample of the error with the attached zip file if it helps your debugging.

panic: Failed to initialize parser: Failed to read pdf: Failed to read xref table: Unsupported /DecodeParms - only tested with /Columns <= 4 and /Predictor <= 12

goroutine 1 [running]:
github.com/phpdave11/gofpdi.(*Importer).SetSourceStream(0xc0000c5140, 0xc0000c0540)
	/home/tsutsumi/go/pkg/mod/github.com/phpdave11/[email protected]/importer.go:95 +0x19b
github.com/jung-kurt/gofpdf/contrib/gofpdi.(*Importer).ImportPageFromStream(0x75bba8, {0x647248, 0xc00011d000}, 0x3?, 0x3?, {0x5fe5f8, 0x9})
	/home/tsutsumi/go/pkg/mod/github.com/jung-kurt/[email protected]/contrib/gofpdi/gofpdi.go:54 +0x45
github.com/jung-kurt/gofpdf/contrib/gofpdi.ImportPageFromStream(...)
	/home/tsutsumi/go/pkg/mod/github.com/jung-kurt/[email protected]/contrib/gofpdi/gofpdi.go:124
github.com/rorycl/rm2pdf/rmpdf.constructPageWithLayers({0xc0000c0480, 0x1, {0xc0000e6540, 0x2a}, {0x0, 0xed92b2429, 0x75c9a0}, 0x3, 0x3, {0x0, ...}, ...}, ...)
	/home/tsutsumi/remarkable-files/rm2pdf/rmpdf/pdf.go:90 +0x358
github.com/rorycl/rm2pdf/rmpdf.RM2PDF({0x7fff034930a1?, 0x1?}, {0x7fff034930e0, 0x8}, {0x0?, 0xc000030500?}, {0x0, 0x0}, 0x0, {0x0, ...})
	/home/tsutsumi/remarkable-files/rm2pdf/rmpdf/pdf.go:334 +0x3c5
main.main()
	/home/tsutsumi/remarkable-files/rm2pdf/main.go:63 +0x165

DnD_5E_CharacterSheet - Form Fillable copy.zip

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Hi @diegotsutsumi

Thanks for the report. Unfortunately this is a gofpdi issue and it seems unlikely the author will be updating the project.

I've tried using the pdfcpu library to first process source pdfs, but it often fails too.

The most reliable way I've found to working around the issue of many pdfs having non-standard or corrupt formats is by using the pdftk tool outside of rm2pdf.

Does resaving the pdf using pdftk work for you? For example convert the file with pdftk <original_file.pdf> cat output <output_file.pdf> then move <output_file.pdf> to <original_file.pdf> (after making a backup of the original file), then re-run rm2pdf. This always works for me.

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So yeah, it did work for this case indeed. I see this is documented in README.md and in in ./rm2pdf --help as well, my bad not seeing this before. Thanks for the tip.

It worked for this one, however not for all pdf files I have in my remarkable, pdftk doesn't fix a couple of them. I keep seeing gofpdi errors for these, unfortunately they're all confidential files I can't upload here.

I guess for these cases we'd be blocked on gofpdi fixes, but thanks for pointing the pdftk workaround.

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Closing as wontfix due to problem with gofpdi; reported upstream.

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