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-rw-r--r--libpng/pngrutil.c36
1 files changed, 20 insertions, 16 deletions
diff --git a/libpng/pngrutil.c b/libpng/pngrutil.c
index dca7c65..e9dc1a4 100644
--- a/libpng/pngrutil.c
+++ b/libpng/pngrutil.c
@@ -790,16 +790,18 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
#endif
#if defined(PNG_READ_sRGB_SUPPORTED)
+#undef png_abs
+#define png_abs(x) (((x)>0)?(x):-(x))
if (info_ptr->valid & PNG_INFO_sRGB)
{
- 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_green - 30000L) > 1000 ||
- abs(int_y_green - 60000L) > 1000 ||
- abs(int_x_blue - 15000L) > 1000 ||
- abs(int_y_blue - 6000L) > 1000)
+ if (png_abs(int_x_white - 31270L) > 1000 ||
+ png_abs(int_y_white - 32900L) > 1000 ||
+ png_abs(int_x_red - 64000L) > 1000 ||
+ png_abs(int_y_red - 33000L) > 1000 ||
+ png_abs(int_x_green - 30000L) > 1000 ||
+ png_abs(int_y_green - 60000L) > 1000 ||
+ png_abs(int_x_blue - 15000L) > 1000 ||
+ png_abs(int_y_blue - 6000L) > 1000)
{
png_warning(png_ptr,
@@ -925,15 +927,17 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
#ifdef PNG_READ_cHRM_SUPPORTED
#ifdef PNG_FIXED_POINT_SUPPORTED
+#undef png_abs
+#define png_abs(x) (((x)>0)?(x):-(x))
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_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)
+ if (png_abs(info_ptr->int_x_white - 31270L) > 1000 ||
+ png_abs(info_ptr->int_y_white - 32900L) > 1000 ||
+ png_abs(info_ptr->int_x_red - 64000L) > 1000 ||
+ png_abs(info_ptr->int_y_red - 33000L) > 1000 ||
+ png_abs(info_ptr->int_x_green - 30000L) > 1000 ||
+ png_abs(info_ptr->int_y_green - 60000L) > 1000 ||
+ png_abs(info_ptr->int_x_blue - 15000L) > 1000 ||
+ png_abs(info_ptr->int_y_blue - 6000L) > 1000)
{
png_warning(png_ptr,
"Ignoring incorrect cHRM value when sRGB is also present");