OpenSystemsDevelopment / qpdf

Commit cb85d369b4f9772b6e203c843d427f9473f2b2f3

Authored by TinyServal
Committed by m-holger
1 parent 2a4495dd

Don't apply filters to empty stream objects

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Showing 1 changed file with 6 additions and 0 deletions
libqpdf/QPDFWriter.cc
  View file @cb85d36
@@ -1293,6 +1293,12 @@ QPDFWriter::willFilterStream( @@ -1293,6 +1293,12 @@ QPDFWriter::willFilterStream(
1293 QTC::TC("qpdf", "QPDFWriter compressing uncompressed stream"); 1293 QTC::TC("qpdf", "QPDFWriter compressing uncompressed stream");
1294 } 1294 }
1295 1295
  1296 + // Disable compression for empty streams to improve compatibility
  1297 + if (stream_dict.getKey("/Length").isInteger() && stream_dict.getKey("/Length").getIntValue() == 0) {
  1298 + filter = true;
  1299 + compress_stream = false;
  1300 + }
  1301 +
1296 bool filtered = false; 1302 bool filtered = false;
1297 for (bool first_attempt: {true, false}) { 1303 for (bool first_attempt: {true, false}) {
1298 PipelinePopper pp_stream_data(this); 1304 PipelinePopper pp_stream_data(this);