OpenSystemsDevelopment / qpdf

Commit 290742b069756218cd9d2075ea18b9fa60fc56ca

Authored by Jay Berkenbilt
Committed by GitHub
2 parents b0b6d9f2 9146f1f0

Merge pull request #1070 from m-holger/flate 

Change default for SF_FlateLzwDecode::columns to 1
Inline Side-by-side
Showing 5 changed files with 15 additions and 3 deletions
libqpdf/SF_FlateLzwDecode.cc
  View file @290742b
... ... @@ -11,7 +11,7 @@ SF_FlateLzwDecode::SF_FlateLzwDecode(bool lzw) :
11 11 lzw(lzw),
12 12 // Initialize values to their defaults as per the PDF spec
13 13 predictor(1),
14   - columns(0),
  14 + columns(1),
15 15 colors(1),
16 16 bits_per_component(8),
17 17 early_code_change(true)
... ...
qpdf/qtest/qpdf/png-filters-1-column.pdf 0 → 100644
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qpdf/qtest/qpdf/png-filters-no-columns-decoded.pdf 0 → 100644
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qpdf/qtest/qpdf/png-filters-no-columns.pdf 0 → 100644
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qpdf/qtest/specialized-filter.test
  View file @290742b
... ... @@ -16,7 +16,7 @@ cleanup();
16 16  
17 17 my $td = new TestDriver('specialized-filter');
18 18  
19   -my $n_tests = 3;
  19 +my $n_tests = 5;
20 20 my $n_compare_pdfs = 1;
21 21  
22 22 # The PDF file was submitted on bug #83 on github. All the PNG filters
... ... @@ -39,6 +39,18 @@ $td->runtest("stream with tiff predictor",
39 39 {$td->FILE => "tiff-predictor.out",
40 40 $td->EXIT_STATUS => 0},
41 41 $td->NORMALIZE_NEWLINES);
42   -
  42 +# TC:SF_FlateLzwDecode PNG filter
  43 +# PDF:Table 8:Columns
  44 +# The test file is invalid as it does not actually use one column (as is implied by the missing
  45 +# key). However png-filters-1-column.pdf is the same file with /Columns explicitely set to 1,
  46 +# and displays the same as png-filters-no-columns.pdf and png-filters-no-columns-decoded.pdf.
  47 +$td->runtest("decode flate no /Columns",
  48 + {$td->COMMAND => "qpdf --static-id --compress-streams=n --decode-level=all" .
  49 + " png-filters-no-columns.pdf a.pdf"},
  50 + {$td->STRING => "", $td->EXIT_STATUS => 0},
  51 + $td->NORMALIZE_NEWLINES);
  52 +$td->runtest("check output",
  53 + {$td->FILE => "a.pdf"},
  54 + {$td->FILE => "png-filters-no-columns-decoded.pdf"});
43 55 cleanup();
44 56 $td->report(calc_ntests($n_tests, $n_compare_pdfs));
... ...