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Imported from libpng-0.99e.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-02-28 07:00:24 -06:00
parent a357b99113
commit cbe52d8720
28 changed files with 843 additions and 694 deletions
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18
pngrutil.c
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@@ -6,7 +6,7 @@
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson
* February 8, 1998
* February 28, 1998
*
* This file contains routines which are only called from within
* libpng itself during the course of reading an image.
@@ -258,6 +258,20 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_ptr->mode |= PNG_HAVE_PLTE;
#if defined (PNG_READ_tRNS_SUPPORTED)
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
if (info_ptr != NULL && info_ptr->valid & PNG_INFO_tRNS)
{
if (png_ptr->num_trans > png_ptr->num_palette)
{
png_warning(png_ptr, "Truncating incorrect tRNS chunk length");
png_ptr->num_trans = png_ptr->num_palette;
}
}
}
#endif
#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
{
@@ -1419,8 +1433,8 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (!(png_ptr->chunk_name[0] & 0x20))
{
png_chunk_error(png_ptr, "unknown critical chunk");
/* to quiet compiler warnings about unused info_ptr */
/* to quiet compiler warnings about unused info_ptr */
if (info_ptr == NULL)
return;
}