--- a/src/3rdparty/libpng/pngget.c Wed Jun 23 19:07:03 2010 +0300
+++ b/src/3rdparty/libpng/pngget.c Tue Jul 06 15:10:48 2010 +0300
@@ -1,8 +1,8 @@
/* pngget.c - retrieval of values from info struct
*
- * Last changed in libpng 1.2.37 [June 4, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Copyright (c) 1998-2010 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@@ -12,9 +12,10 @@
*
*/
-#define PNG_INTERNAL
+#define PNG_NO_PEDANTIC_WARNINGS
#include "png.h"
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+#include "pngpriv.h"
png_uint_32 PNGAPI
png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
@@ -26,7 +27,7 @@
return(0);
}
-png_uint_32 PNGAPI
+png_size_t PNGAPI
png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
@@ -36,7 +37,7 @@
return(0);
}
-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_INFO_IMAGE_SUPPORTED
png_bytepp PNGAPI
png_get_rows(png_structp png_ptr, png_infop info_ptr)
{
@@ -117,7 +118,7 @@
png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
@@ -138,7 +139,7 @@
png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
@@ -159,7 +160,7 @@
png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
@@ -182,13 +183,15 @@
png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
if (info_ptr->valid & PNG_INFO_pHYs)
{
png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
+
if (info_ptr->x_pixels_per_unit == 0)
return ((float)0.0);
+
else
return ((float)((float)info_ptr->y_pixels_per_unit
/(float)info_ptr->x_pixels_per_unit));
@@ -204,7 +207,7 @@
png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
@@ -227,7 +230,7 @@
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
@@ -249,7 +252,7 @@
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
@@ -271,7 +274,7 @@
{
if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
if (info_ptr->valid & PNG_INFO_oFFs)
{
png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
@@ -324,7 +327,7 @@
*.00003937);
}
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@@ -334,6 +337,7 @@
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
{
png_debug1(1, "in %s retrieval function", "pHYs");
+
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
@@ -382,7 +386,7 @@
return (NULL);
}
-#if defined(PNG_bKGD_SUPPORTED)
+#ifdef PNG_bKGD_SUPPORTED
png_uint_32 PNGAPI
png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
png_color_16p *background)
@@ -391,6 +395,7 @@
&& background != NULL)
{
png_debug1(1, "in %s retrieval function", "bKGD");
+
*background = &(info_ptr->background);
return (PNG_INFO_bKGD);
}
@@ -398,7 +403,7 @@
}
#endif
-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_cHRM_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
@@ -408,6 +413,7 @@
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
png_debug1(1, "in %s retrieval function", "cHRM");
+
if (white_x != NULL)
*white_x = (double)info_ptr->x_white;
if (white_y != NULL)
@@ -436,9 +442,10 @@
png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
png_fixed_point *blue_x, png_fixed_point *blue_y)
{
+ png_debug1(1, "in %s retrieval function", "cHRM");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
{
- png_debug1(1, "in %s retrieval function", "cHRM");
if (white_x != NULL)
*white_x = info_ptr->int_x_white;
if (white_y != NULL)
@@ -462,15 +469,16 @@
#endif
#endif
-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
{
+ png_debug1(1, "in %s retrieval function", "gAMA");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
&& file_gamma != NULL)
{
- png_debug1(1, "in %s retrieval function", "gAMA");
*file_gamma = (double)info_ptr->gamma;
return (PNG_INFO_gAMA);
}
@@ -482,10 +490,11 @@
png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
png_fixed_point *int_file_gamma)
{
+ png_debug1(1, "in %s retrieval function", "gAMA");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
&& int_file_gamma != NULL)
{
- png_debug1(1, "in %s retrieval function", "gAMA");
*int_file_gamma = info_ptr->int_gamma;
return (PNG_INFO_gAMA);
}
@@ -494,14 +503,15 @@
#endif
#endif
-#if defined(PNG_sRGB_SUPPORTED)
+#ifdef PNG_sRGB_SUPPORTED
png_uint_32 PNGAPI
png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
{
+ png_debug1(1, "in %s retrieval function", "sRGB");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
&& file_srgb_intent != NULL)
{
- png_debug1(1, "in %s retrieval function", "sRGB");
*file_srgb_intent = (int)info_ptr->srgb_intent;
return (PNG_INFO_sRGB);
}
@@ -509,16 +519,17 @@
}
#endif
-#if defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_iCCP_SUPPORTED
png_uint_32 PNGAPI
png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
png_charpp name, int *compression_type,
png_charpp profile, png_uint_32 *proflen)
{
+ png_debug1(1, "in %s retrieval function", "iCCP");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
&& name != NULL && profile != NULL && proflen != NULL)
{
- png_debug1(1, "in %s retrieval function", "iCCP");
*name = info_ptr->iccp_name;
*profile = info_ptr->iccp_profile;
/* Compression_type is a dummy so the API won't have to change
@@ -532,7 +543,7 @@
}
#endif
-#if defined(PNG_sPLT_SUPPORTED)
+#ifdef PNG_sPLT_SUPPORTED
png_uint_32 PNGAPI
png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
png_sPLT_tpp spalettes)
@@ -546,14 +557,15 @@
}
#endif
-#if defined(PNG_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
png_uint_32 PNGAPI
png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
{
+ png_debug1(1, "in %s retrieval function", "hIST");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
&& hist != NULL)
{
- png_debug1(1, "in %s retrieval function", "hIST");
*hist = info_ptr->hist;
return (PNG_INFO_hIST);
}
@@ -568,62 +580,48 @@
int *filter_type)
{
- if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
- bit_depth != NULL && color_type != NULL)
- {
- png_debug1(1, "in %s retrieval function", "IHDR");
- *width = info_ptr->width;
- *height = info_ptr->height;
- *bit_depth = info_ptr->bit_depth;
- if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
- png_error(png_ptr, "Invalid bit depth");
+ png_debug1(1, "in %s retrieval function", "IHDR");
+
+ if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
+ height == NULL || bit_depth == NULL || color_type == NULL)
+ return (0);
- *color_type = info_ptr->color_type;
-
- if (info_ptr->color_type > 6)
- png_error(png_ptr, "Invalid color type");
+ *width = info_ptr->width;
+ *height = info_ptr->height;
+ *bit_depth = info_ptr->bit_depth;
+ *color_type = info_ptr->color_type;
- if (compression_type != NULL)
- *compression_type = info_ptr->compression_type;
-
- if (filter_type != NULL)
- *filter_type = info_ptr->filter_type;
+ if (compression_type != NULL)
+ *compression_type = info_ptr->compression_type;
- if (interlace_type != NULL)
- *interlace_type = info_ptr->interlace_type;
+ if (filter_type != NULL)
+ *filter_type = info_ptr->filter_type;
- /* Check for potential overflow of rowbytes */
- if (*width == 0 || *width > PNG_UINT_31_MAX)
- png_error(png_ptr, "Invalid image width");
-
- if (*height == 0 || *height > PNG_UINT_31_MAX)
- png_error(png_ptr, "Invalid image height");
+ if (interlace_type != NULL)
+ *interlace_type = info_ptr->interlace_type;
- if (info_ptr->width > (PNG_UINT_32_MAX
- >> 3) /* 8-byte RGBA pixels */
- - 64 /* bigrowbuf hack */
- - 1 /* filter byte */
- - 7*8 /* rounding of width to multiple of 8 pixels */
- - 8) /* extra max_pixel_depth pad */
- {
- png_warning(png_ptr,
- "Width too large for libpng to process image data.");
- }
+ /* This is redundant if we can be sure that the info_ptr values were all
+ * assigned in png_set_IHDR(). We do the check anyhow in case an
+ * application has ignored our advice not to mess with the members
+ * of info_ptr directly.
+ */
+ png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
+ info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+ info_ptr->compression_type, info_ptr->filter_type);
- return (1);
- }
- return (0);
+ return (1);
}
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
png_uint_32 PNGAPI
png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
{
+ png_debug1(1, "in %s retrieval function", "oFFs");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
&& offset_x != NULL && offset_y != NULL && unit_type != NULL)
{
- png_debug1(1, "in %s retrieval function", "oFFs");
*offset_x = info_ptr->x_offset;
*offset_y = info_ptr->y_offset;
*unit_type = (int)info_ptr->offset_unit_type;
@@ -633,17 +631,18 @@
}
#endif
-#if defined(PNG_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
png_uint_32 PNGAPI
png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
png_charp *units, png_charpp *params)
{
+ png_debug1(1, "in %s retrieval function", "pCAL");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
&& purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
nparams != NULL && units != NULL && params != NULL)
{
- png_debug1(1, "in %s retrieval function", "pCAL");
*purpose = info_ptr->pcal_purpose;
*X0 = info_ptr->pcal_X0;
*X1 = info_ptr->pcal_X1;
@@ -657,7 +656,7 @@
}
#endif
-#if defined(PNG_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
#ifdef PNG_FLOATING_POINT_SUPPORTED
png_uint_32 PNGAPI
png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
@@ -693,18 +692,18 @@
#endif
#endif
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
png_uint_32 PNGAPI
png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
{
png_uint_32 retval = 0;
+ png_debug1(1, "in %s retrieval function", "pHYs");
+
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_pHYs))
{
- png_debug1(1, "in %s retrieval function", "pHYs");
-
if (res_x != NULL)
{
*res_x = info_ptr->x_pixels_per_unit;
@@ -731,10 +730,11 @@
png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
int *num_palette)
{
+ png_debug1(1, "in %s retrieval function", "PLTE");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
&& palette != NULL)
{
- png_debug1(1, "in %s retrieval function", "PLTE");
*palette = info_ptr->palette;
*num_palette = info_ptr->num_palette;
png_debug1(3, "num_palette = %d", *num_palette);
@@ -743,14 +743,15 @@
return (0);
}
-#if defined(PNG_sBIT_SUPPORTED)
+#ifdef PNG_sBIT_SUPPORTED
png_uint_32 PNGAPI
png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
{
+ png_debug1(1, "in %s retrieval function", "sBIT");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
&& sig_bit != NULL)
{
- png_debug1(1, "in %s retrieval function", "sBIT");
*sig_bit = &(info_ptr->sig_bit);
return (PNG_INFO_sBIT);
}
@@ -758,7 +759,7 @@
}
#endif
-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
png_uint_32 PNGAPI
png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
int *num_text)
@@ -783,14 +784,15 @@
}
#endif
-#if defined(PNG_tIME_SUPPORTED)
+#ifdef PNG_tIME_SUPPORTED
png_uint_32 PNGAPI
png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
{
+ png_debug1(1, "in %s retrieval function", "tIME");
+
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
&& mod_time != NULL)
{
- png_debug1(1, "in %s retrieval function", "tIME");
*mod_time = &(info_ptr->mod_time);
return (PNG_INFO_tIME);
}
@@ -798,36 +800,37 @@
}
#endif
-#if defined(PNG_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
png_uint_32 PNGAPI
png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
- png_bytep *trans, int *num_trans, png_color_16p *trans_values)
+ png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
{
png_uint_32 retval = 0;
if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
{
png_debug1(1, "in %s retrieval function", "tRNS");
+
if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{
- if (trans != NULL)
+ if (trans_alpha != NULL)
{
- *trans = info_ptr->trans;
+ *trans_alpha = info_ptr->trans_alpha;
retval |= PNG_INFO_tRNS;
}
- if (trans_values != NULL)
- *trans_values = &(info_ptr->trans_values);
+ if (trans_color != NULL)
+ *trans_color = &(info_ptr->trans_color);
}
else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
{
- if (trans_values != NULL)
+ if (trans_color != NULL)
{
- *trans_values = &(info_ptr->trans_values);
+ *trans_color = &(info_ptr->trans_color);
retval |= PNG_INFO_tRNS;
}
- if (trans != NULL)
- *trans = NULL;
+ if (trans_alpha != NULL)
+ *trans_alpha = NULL;
}
if (num_trans != NULL)
{
@@ -839,7 +842,7 @@
}
#endif
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
png_uint_32 PNGAPI
png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
png_unknown_chunkpp unknowns)
@@ -853,7 +856,7 @@
}
#endif
-#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
png_get_rgb_to_gray_status (png_structp png_ptr)
{
@@ -861,7 +864,7 @@
}
#endif
-#if defined(PNG_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_USER_CHUNKS_SUPPORTED
png_voidp PNGAPI
png_get_user_chunk_ptr(png_structp png_ptr)
{
@@ -870,60 +873,13 @@
#endif
#ifdef PNG_WRITE_SUPPORTED
-png_uint_32 PNGAPI
+png_size_t PNGAPI
png_get_compression_buffer_size(png_structp png_ptr)
{
- return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
+ return (png_ptr ? png_ptr->zbuf_size : 0L);
}
#endif
-#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
-#ifndef PNG_1_0_X
-/* This function was added to libpng 1.2.0 and should exist by default */
-png_uint_32 PNGAPI
-png_get_asm_flags (png_structp png_ptr)
-{
- /* Obsolete, to be removed from libpng-1.4.0 */
- return (png_ptr? 0L: 0L);
-}
-
-/* This function was added to libpng 1.2.0 and should exist by default */
-png_uint_32 PNGAPI
-png_get_asm_flagmask (int flag_select)
-{
- /* Obsolete, to be removed from libpng-1.4.0 */
- flag_select=flag_select;
- return 0L;
-}
-
- /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
-/* This function was added to libpng 1.2.0 */
-png_uint_32 PNGAPI
-png_get_mmx_flagmask (int flag_select, int *compilerID)
-{
- /* Obsolete, to be removed from libpng-1.4.0 */
- flag_select=flag_select;
- *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
- return 0L;
-}
-
-/* This function was added to libpng 1.2.0 */
-png_byte PNGAPI
-png_get_mmx_bitdepth_threshold (png_structp png_ptr)
-{
- /* Obsolete, to be removed from libpng-1.4.0 */
- return (png_ptr? 0: 0);
-}
-
-/* This function was added to libpng 1.2.0 */
-png_uint_32 PNGAPI
-png_get_mmx_rowbytes_threshold (png_structp png_ptr)
-{
- /* Obsolete, to be removed from libpng-1.4.0 */
- return (png_ptr? 0L: 0L);
-}
-#endif /* ?PNG_1_0_X */
-#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* These functions were added to libpng 1.2.6 */
@@ -937,7 +893,27 @@
{
return (png_ptr? png_ptr->user_height_max : 0);
}
+/* This function was added to libpng 1.4.0 */
+png_uint_32 PNGAPI
+png_get_chunk_cache_max (png_structp png_ptr)
+{
+ return (png_ptr? png_ptr->user_chunk_cache_max? 0x7fffffffL :
+ png_ptr->user_chunk_cache_max - 1 : 0);
+}
#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
+#ifdef PNG_IO_STATE_SUPPORTED
+png_uint_32 PNGAPI
+png_get_io_state (png_structp png_ptr)
+{
+ return png_ptr->io_state;
+}
+
+png_bytep PNGAPI
+png_get_io_chunk_name (png_structp png_ptr)
+{
+ return png_ptr->chunk_name;
+}
+#endif /* ?PNG_IO_STATE_SUPPORTED */
#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */