OpenSystemsDevelopment / qpdf

Commit 308930150027f90aa48d9873f3f11d0a89dd98b7

Authored by m-holger
Committed by GitHub
2 parents f32066d6 57ad405b

Merge pull request #1546 from jbarlow83/feature/do-check-optimization 

Avoid unnecessary re-compression in QPDFJob::doCheck
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Showing 1 changed file with 5 additions and 0 deletions
libqpdf/QPDFJob.cc
  View file @3089301
@@ -793,6 +793,11 @@ QPDFJob::doCheck(QPDF& pdf) @@ -793,6 +793,11 @@ QPDFJob::doCheck(QPDF& pdf)
793 Pl_Discard discard; 793 Pl_Discard discard;
794 w.setOutputPipeline(&discard); 794 w.setOutputPipeline(&discard);
795 w.setDecodeLevel(qpdf_dl_all); 795 w.setDecodeLevel(qpdf_dl_all);
  796 + // Disable compression of streams, since we only need to confirm we can decode them. This
  797 + // avoids JPEG DCT -> Flate recompression of all images.
  798 + w.setCompressStreams(false);
  799 + // Also disable recompression of Flate streams since are only checking.
  800 + w.setRecompressFlate(false);
796 w.write(); 801 w.write();
797 802
798 // Parse all content streams 803 // Parse all content streams