mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

Imported from libpng-1.2.27beta01.tar

Browse Source
This commit is contained in:
Glenn Randers-Pehrson
2008-04-12 06:59:47 -05:00
parent b8c4b82d18
commit d9d2a6f6d9
51 changed files with 281 additions and 167 deletions
Download Patch File Download Diff File Expand all files Collapse all files

55
pngset.c
View File

@@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.2.25 [February 18, 2008]
* Last changed in libpng 1.2.27 [April 12, 2008]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -938,6 +938,18 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
if (trans_values != NULL)
{
int sample_max = (1 << info_ptr->bit_depth);
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
(int)trans_values->gray > sample_max) ||
(info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
((int)trans_values->red > sample_max ||
(int)trans_values->green > sample_max ||
(int)trans_values->blue > sample_max)))
{
png_warning(png_ptr,
"Ignoring tRNS chunk with out-of-range samples for bit_depth");
return;
}
png_memcpy(&(info_ptr->trans_values), trans_values,
png_sizeof(png_color_16));
if (num_trans == 0)
@@ -1040,28 +1052,31 @@ png_set_unknown_chunks(png_structp png_ptr,
for (i = 0; i < num_unknowns; i++)
{
png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
png_unknown_chunkp from = unknowns + i;
png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
png_unknown_chunkp from = unknowns + i;
png_memcpy((png_charp)to->name,
(png_charp)from->name,
png_sizeof(from->name));
to->name[png_sizeof(to->name)-1] = '\0';
png_memcpy((png_charp)to->name,
(png_charp)from->name,
png_sizeof(from->name));
to->name[png_sizeof(to->name)-1] = '\0';
to->size = from->size;
/* note our location in the read or write sequence */
to->location = (png_byte)(png_ptr->mode & 0xff);
to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
if (to->data == NULL)
{
png_warning(png_ptr,
if (from->size == 0)
to->data=NULL;
else
{
to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
if (to->data == NULL)
{
png_warning(png_ptr,
"Out of memory while processing unknown chunk.");
}
else
{
png_memcpy(to->data, from->data, from->size);
to->size = from->size;
/* note our location in the read or write sequence */
to->location = (png_byte)(png_ptr->mode & 0xff);
}
to->size=0;
}
else
png_memcpy(to->data, from->data, from->size);
}
}
info_ptr->unknown_chunks = np;