commit 5432c01ffd6260d19403ce9c1a09b99ab488485e
author John Bowler <jbowler@acm.org> Sat Feb 12 08:59:17 2011 -0600
committer Glenn Randers-Pehrson <glennrp@shaggy.simplesystems.org> Sat Feb 12 08:59:17 2011 -0600
tree 25d86ed1b82c662b81c02d3b9502f89ad36b7726
parent 9c69360e97a305703f9cbcfa78a2526a228bfa43

[devel] Fix png_get_current_row_number in the interlaced case.

png.h

diff --git a/png.h b/png.h
index d50c031..5d69f0f 100644
--- a/png.h
+++ b/png.h
@@ -1477,6 +1477,10 @@
  * row number is still the row in the final, de-interlaced, image but the row
  * only contains the data of the current pass - consult png_row_info for the
  * actual width of the row!
+ *
+ * In contrast the row numbers passed to the progressive reader and sequential
+ * reader callbacks are actually the rows in the input data - so the row in the
+ * interlaced pass for an interlaced image.
  */
 PNG_EXPORT(217, png_uint_32, png_get_current_row_number, (png_const_structp));
 PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structp));