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Bug fix: don't compress object/xref streams with --compress-streams=n

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Jay Berkenbilt 2023-12-20 10:51:56 -05:00
parent 4c3c658e25
commit c5f622a09e
4 changed files with 7 additions and 3 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2023-12-20 Jay Berkenbilt <ejb@ql.org>
* Bug fix: with --compress-streams=n, don't compress object or
XRef streams.
2023-12-16 Jay Berkenbilt <ejb@ql.org> 2023-12-16 Jay Berkenbilt <ejb@ql.org>
* Add new C++ functions "qpdf_c_get_qpdf" and "qpdf_c_wrap" to * Add new C++ functions "qpdf_c_get_qpdf" and "qpdf_c_wrap" to

5
libqpdf/QPDFWriter.cc
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@ -1658,8 +1658,7 @@ QPDFWriter::writeObjectStream(QPDFObjectHandle object)
// Set up a stream to write the stream data into a buffer. // Set up a stream to write the stream data into a buffer.
Pipeline* next = pushPipeline(new Pl_Buffer("object stream")); Pipeline* next = pushPipeline(new Pl_Buffer("object stream"));
if ((m->compress_streams || (m->stream_decode_level == qpdf_dl_none)) && if (m->compress_streams && !m->qdf_mode) {
(!m->qdf_mode)) {
compressed = true; compressed = true;
next = next =
pushPipeline(new Pl_Flate("compress object stream", next, Pl_Flate::a_deflate)); pushPipeline(new Pl_Flate("compress object stream", next, Pl_Flate::a_deflate));
@ -2417,7 +2416,7 @@ QPDFWriter::writeXRefStream(
Pipeline* p = pushPipeline(new Pl_Buffer("xref stream")); Pipeline* p = pushPipeline(new Pl_Buffer("xref stream"));
bool compressed = false; bool compressed = false;
if ((m->compress_streams || (m->stream_decode_level == qpdf_dl_none)) && (!m->qdf_mode)) { if (m->compress_streams && !m->qdf_mode) {
compressed = true; compressed = true;
if (!skip_compression) { if (!skip_compression) {
// Write the stream dictionary for compression but don't actually compress. This helps // Write the stream dictionary for compression but don't actually compress. This helps

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qpdf/qtest/qpdf/good17-not-recompressed.pdf
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qpdf/qtest/qpdf/newline-before-endstream-nl-objstm.pdf
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