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http://bugs.gentoo.org/show_bug.cgi?id=383799#c13
Upstream: http://www.avasys.jp/cgi-bin/lx/bbs/en/scanner-bbs/hyperbbs.cgi?mode=view;Code=5197
--- lib/pngstream.cc
+++ lib/pngstream.cc
@@ -76,7 +76,12 @@
set_error_handler (_png, _info);
lib->write_flush (_png);
+/* when not interlacing (ie, only one pass), number of rows is image height: _v_sz */
+#if PNG_LIBPNG_VER > 10499
+ if (!_footer && _v_sz == lib->get_current_row_number(_png))
+#else
if (!_footer && _png->num_rows == _png->flush_rows)
+#endif
{
lib->write_end (_png, _info);
_footer = true;
@@ -161,6 +166,9 @@
funcsym (write_row);
funcsym (write_flush);
funcsym (write_end);
+#if PNG_LIBPNG_VER > 10499
+ funcsym (get_current_row_number);
+#endif
if (lib->access_version_number
&& lib->create_write_struct
@@ -170,6 +178,9 @@
&& lib->set_IHDR
&& lib->set_pHYs
&& lib->set_invert_mono
+#if PNG_LIBPNG_VER > 10499
+ && lib->get_current_row_number
+#endif
&& lib->write_info
&& lib->write_row
&& lib->write_flush
--- lib/pngstream.hh
+++ lib/pngstream.hh
@@ -108,6 +108,10 @@
png_structp);
fundecl (void, write_end,
png_structp, png_infop);
+#if PNG_LIBPNG_VER > 10499
+ fundecl (png_uint_32, get_current_row_number,
+ png_structp);
+#endif
#endif /* HAVE_PNG_H */
};
static png_lib_handle *lib;
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