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Fixes for !READ_INTERLACE/!READ_PNG interpendencies

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The reliance of png_read_png on interlace handling and some minor issues in the
test programs where they failed to correctly check for interlace handling were
exposed by the ability to write interlaced images even if WRITE_INTERLACING is
turned off.  This is fixed here.

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2015-11-22 21:37:16 -08:00
parent b69df74b8e
commit 6803b09cb7
4 changed files with 33 additions and 9 deletions
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2
scripts/pnglibconf.dfa
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@@ -947,7 +947,7 @@ option WRITE_zTXt enables WRITE_COMPRESSED_TEXT
# leave the row_pointers member out of the info structure.
option INFO_IMAGE disabled
option READ_PNG requires SEQUENTIAL_READ READ_TRANSFORMS enables INFO_IMAGE
option READ_PNG requires READ_IMAGE READ_TRANSFORMS enables INFO_IMAGE
option WRITE_PNG requires WRITE WRITE_TRANSFORMS enables INFO_IMAGE
# There are four options here, two each for read and write. By default they are