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Imported from libpng-1.2.0beta4.tar

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This commit is contained in:
Glenn Randers-Pehrson
2001-06-23 08:03:17 -05:00
parent 8b6a889881
commit b182893c04
77 changed files with 419 additions and 10429 deletions
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26
pngrutil.c
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@@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* libpng 1.2.0beta3 - May 18, 2001
* libpng 1.2.0beta4 - June 23, 2001
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2001 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -794,12 +794,12 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
if (abs(int_x_white - 31270L) > 1000 ||
abs(int_y_white - 32900L) > 1000 ||
abs( int_x_red - 64000L) > 1000 ||
abs( int_y_red - 33000L) > 1000 ||
abs(int_x_red - 64000L) > 1000 ||
abs(int_y_red - 33000L) > 1000 ||
abs(int_x_green - 30000L) > 1000 ||
abs(int_y_green - 60000L) > 1000 ||
abs( int_x_blue - 15000L) > 1000 ||
abs( int_y_blue - 6000L) > 1000)
abs(int_x_blue - 15000L) > 1000 ||
abs(int_y_blue - 6000L) > 1000)
{
png_warning(png_ptr,
@@ -928,12 +928,12 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (info_ptr->valid & PNG_INFO_cHRM)
if (abs(info_ptr->int_x_white - 31270L) > 1000 ||
abs(info_ptr->int_y_white - 32900L) > 1000 ||
abs( info_ptr->int_x_red - 64000L) > 1000 ||
abs( info_ptr->int_y_red - 33000L) > 1000 ||
abs(info_ptr->int_x_red - 64000L) > 1000 ||
abs(info_ptr->int_y_red - 33000L) > 1000 ||
abs(info_ptr->int_x_green - 30000L) > 1000 ||
abs(info_ptr->int_y_green - 60000L) > 1000 ||
abs( info_ptr->int_x_blue - 15000L) > 1000 ||
abs( info_ptr->int_y_blue - 6000L) > 1000)
abs(info_ptr->int_x_blue - 15000L) > 1000 ||
abs(info_ptr->int_y_blue - 6000L) > 1000)
{
png_warning(png_ptr,
"Ignoring incorrect cHRM value when sRGB is also present");
@@ -1029,6 +1029,13 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
profile_length = data_length - prefix_length;
if ( profile_length < 4)
{
png_free(png_ptr, chunkdata);
png_warning(png_ptr, "Profile size field missing from iCCP chunk");
return;
}
/* Check the profile_size recorded in the first 32 bits of the ICC profile */
profile_size = ((*(chunkdata+prefix_length))<<24) |
((*(chunkdata+prefix_length+1))<<16) |
@@ -1040,6 +1047,7 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if(profile_size > profile_length)
{
png_free(png_ptr, chunkdata);
png_warning(png_ptr, "Ignoring truncated iCCP profile.\n");
return;
}