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-rw-r--r--media/libpng/pngpread.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/media/libpng/pngpread.c b/media/libpng/pngpread.c
index 7d452a76f2..826d879cb2 100644
--- a/media/libpng/pngpread.c
+++ b/media/libpng/pngpread.c
@@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
- * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 2018-2024 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -145,10 +145,10 @@ png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
num_to_check);
png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
- if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
+ if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check) != 0)
{
if (num_checked < 4 &&
- png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
+ png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4) != 0)
png_error(png_ptr, "Not a PNG file");
else
@@ -381,6 +381,14 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
}
#endif
+#ifdef PNG_READ_eXIf_SUPPORTED
+ else if (png_ptr->chunk_name == png_eXIf)
+ {
+ PNG_PUSH_SAVE_BUFFER_IF_FULL
+ png_handle_eXIf(png_ptr, info_ptr, png_ptr->push_length);
+ }
+
+#endif
#ifdef PNG_READ_sRGB_SUPPORTED
else if (chunk_name == png_sRGB)
{
@@ -1258,7 +1266,7 @@ png_voidp PNGAPI
png_get_progressive_ptr(png_const_structrp png_ptr)
{
if (png_ptr == NULL)
- return (NULL);
+ return NULL;
return png_ptr->io_ptr;
}