X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=gtkmm-osx%2Ftrunk%2Flibpng-1.2.5%2Fpngset.c;fp=gtkmm-osx%2Ftrunk%2Flibpng-1.2.5%2Fpngset.c;h=0000000000000000000000000000000000000000;hb=a095981e18cc37a8ecc7cd237cc22b9c10329264;hp=8e4e6197c95dd84009135e5b0a3e95c8c31b6152;hpb=9459638ad6797b8139f1e9f0715c96076dbf0890;p=synfig.git

diff --git a/gtkmm-osx/trunk/libpng-1.2.5/pngset.c b/gtkmm-osx/trunk/libpng-1.2.5/pngset.c
deleted file mode 100644
index 8e4e619..0000000
--- a/gtkmm-osx/trunk/libpng-1.2.5/pngset.c
+++ /dev/null
@@ -1,1160 +0,0 @@
-
-/* pngset.c - storage of image information into info struct
- *
- * libpng 1.2.5 - October 3, 2002
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2002 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.)
- *
- * The functions here are used during reads to store data from the file
- * into the info struct, and during writes to store application data
- * into the info struct for writing into the file.  This abstracts the
- * info struct and allows us to change the structure in the future.
- */
-
-#define PNG_INTERNAL
-#include "png.h"
-
-#if defined(PNG_bKGD_SUPPORTED)
-void PNGAPI
-png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
-{
-   png_debug1(1, "in %s storage function\n", "bKGD");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   png_memcpy(&(info_ptr->background), background, sizeof(png_color_16));
-   info_ptr->valid |= PNG_INFO_bKGD;
-}
-#endif
-
-#if defined(PNG_cHRM_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
-   double white_x, double white_y, double red_x, double red_y,
-   double green_x, double green_y, double blue_x, double blue_y)
-{
-   png_debug1(1, "in %s storage function\n", "cHRM");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   if (white_x < 0.0 || white_y < 0.0 ||
-         red_x < 0.0 ||   red_y < 0.0 ||
-       green_x < 0.0 || green_y < 0.0 ||
-        blue_x < 0.0 ||  blue_y < 0.0)
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set negative chromaticity value");
-      return;
-   }
-   if (white_x > 21474.83 || white_y > 21474.83 ||
-         red_x > 21474.83 ||   red_y > 21474.83 ||
-       green_x > 21474.83 || green_y > 21474.83 ||
-        blue_x > 21474.83 ||  blue_y > 21474.83)
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set chromaticity value exceeding 21474.83");
-      return;
-   }
-
-   info_ptr->x_white = (float)white_x;
-   info_ptr->y_white = (float)white_y;
-   info_ptr->x_red   = (float)red_x;
-   info_ptr->y_red   = (float)red_y;
-   info_ptr->x_green = (float)green_x;
-   info_ptr->y_green = (float)green_y;
-   info_ptr->x_blue  = (float)blue_x;
-   info_ptr->y_blue  = (float)blue_y;
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5);
-   info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5);
-   info_ptr->int_x_red   = (png_fixed_point)(  red_x*100000.+0.5);
-   info_ptr->int_y_red   = (png_fixed_point)(  red_y*100000.+0.5);
-   info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5);
-   info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5);
-   info_ptr->int_x_blue  = (png_fixed_point)( blue_x*100000.+0.5);
-   info_ptr->int_y_blue  = (png_fixed_point)( blue_y*100000.+0.5);
-#endif
-   info_ptr->valid |= PNG_INFO_cHRM;
-}
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-void PNGAPI
-png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
-   png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
-   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 storage function\n", "cHRM");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   if (white_x < 0 || white_y < 0 ||
-         red_x < 0 ||   red_y < 0 ||
-       green_x < 0 || green_y < 0 ||
-        blue_x < 0 ||  blue_y < 0)
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set negative chromaticity value");
-      return;
-   }
-   if (white_x > (double) PNG_MAX_UINT || white_y > (double) PNG_MAX_UINT ||
-         red_x > (double) PNG_MAX_UINT ||   red_y > (double) PNG_MAX_UINT ||
-       green_x > (double) PNG_MAX_UINT || green_y > (double) PNG_MAX_UINT ||
-        blue_x > (double) PNG_MAX_UINT ||  blue_y > (double) PNG_MAX_UINT)
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set chromaticity value exceeding 21474.83");
-      return;
-   }
-   info_ptr->int_x_white = white_x;
-   info_ptr->int_y_white = white_y;
-   info_ptr->int_x_red   = red_x;
-   info_ptr->int_y_red   = red_y;
-   info_ptr->int_x_green = green_x;
-   info_ptr->int_y_green = green_y;
-   info_ptr->int_x_blue  = blue_x;
-   info_ptr->int_y_blue  = blue_y;
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   info_ptr->x_white = (float)(white_x/100000.);
-   info_ptr->y_white = (float)(white_y/100000.);
-   info_ptr->x_red   = (float)(  red_x/100000.);
-   info_ptr->y_red   = (float)(  red_y/100000.);
-   info_ptr->x_green = (float)(green_x/100000.);
-   info_ptr->y_green = (float)(green_y/100000.);
-   info_ptr->x_blue  = (float)( blue_x/100000.);
-   info_ptr->y_blue  = (float)( blue_y/100000.);
-#endif
-   info_ptr->valid |= PNG_INFO_cHRM;
-}
-#endif
-#endif
-
-#if defined(PNG_gAMA_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
-{
-   double gamma;
-   png_debug1(1, "in %s storage function\n", "gAMA");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   /* Check for overflow */
-   if (file_gamma > 21474.83)
-   {
-      png_warning(png_ptr, "Limiting gamma to 21474.83");
-      gamma=21474.83;
-   }
-   else
-      gamma=file_gamma;
-   info_ptr->gamma = (float)gamma;
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   info_ptr->int_gamma = (int)(gamma*100000.+.5);
-#endif
-   info_ptr->valid |= PNG_INFO_gAMA;
-   if(gamma == 0.0)
-      png_warning(png_ptr, "Setting gamma=0");
-}
-#endif
-void PNGAPI
-png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
-   int_gamma)
-{
-   png_fixed_point gamma;
-
-   png_debug1(1, "in %s storage function\n", "gAMA");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   if (int_gamma > (png_fixed_point) PNG_MAX_UINT)
-   {
-     png_warning(png_ptr, "Limiting gamma to 21474.83");
-     gamma=PNG_MAX_UINT;
-   }
-   else
-   {
-     if (int_gamma < 0)
-     {
-       png_warning(png_ptr, "Setting negative gamma to zero");
-       gamma=0;
-     }
-     else
-       gamma=int_gamma;
-   }
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   info_ptr->gamma = (float)(gamma/100000.);
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   info_ptr->int_gamma = gamma;
-#endif
-   info_ptr->valid |= PNG_INFO_gAMA;
-   if(gamma == 0)
-      png_warning(png_ptr, "Setting gamma=0");
-}
-#endif
-
-#if defined(PNG_hIST_SUPPORTED)
-void PNGAPI
-png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
-{
-   int i;
-
-   png_debug1(1, "in %s storage function\n", "hIST");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-   if (info_ptr->num_palette == 0)
-   {
-       png_warning(png_ptr,
-          "Palette size 0, hIST allocation skipped.");
-       return;
-   }
-
-#ifdef PNG_FREE_ME_SUPPORTED
-   png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
-#endif
-   /* Changed from info->num_palette to 256 in version 1.2.1 */
-   png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr,
-      (png_uint_32)(256 * sizeof (png_uint_16)));
-   if (png_ptr->hist == NULL)
-     {
-       png_warning(png_ptr, "Insufficient memory for hIST chunk data.");
-       return;
-     }
-
-   for (i = 0; i < info_ptr->num_palette; i++)
-       png_ptr->hist[i] = hist[i];
-   info_ptr->hist = png_ptr->hist;
-   info_ptr->valid |= PNG_INFO_hIST;
-
-#ifdef PNG_FREE_ME_SUPPORTED
-   info_ptr->free_me |= PNG_FREE_HIST;
-#else
-   png_ptr->flags |= PNG_FLAG_FREE_HIST;
-#endif
-}
-#endif
-
-void PNGAPI
-png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
-   png_uint_32 width, png_uint_32 height, int bit_depth,
-   int color_type, int interlace_type, int compression_type,
-   int filter_type)
-{
-   int rowbytes_per_pixel;
-   png_debug1(1, "in %s storage function\n", "IHDR");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   /* check for width and height valid values */
-   if (width == 0 || height == 0)
-      png_error(png_ptr, "Image width or height is zero in IHDR");
-   if (width > PNG_MAX_UINT || height > PNG_MAX_UINT)
-      png_error(png_ptr, "Invalid image size in IHDR");
-
-   /* check other values */
-   if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
-      bit_depth != 8 && bit_depth != 16)
-      png_error(png_ptr, "Invalid bit depth in IHDR");
-
-   if (color_type < 0 || color_type == 1 ||
-      color_type == 5 || color_type > 6)
-      png_error(png_ptr, "Invalid color type in IHDR");
-
-   if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
-       ((color_type == PNG_COLOR_TYPE_RGB ||
-         color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
-      png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
-
-   if (interlace_type >= PNG_INTERLACE_LAST)
-      png_error(png_ptr, "Unknown interlace method in IHDR");
-
-   if (compression_type != PNG_COMPRESSION_TYPE_BASE)
-      png_error(png_ptr, "Unknown compression method in IHDR");
-
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
-   /* Accept filter_method 64 (intrapixel differencing) only if
-    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
-    * 2. Libpng did not read a PNG signature (this filter_method is only
-    *    used in PNG datastreams that are embedded in MNG datastreams) and
-    * 3. The application called png_permit_mng_features with a mask that
-    *    included PNG_FLAG_MNG_FILTER_64 and
-    * 4. The filter_method is 64 and
-    * 5. The color_type is RGB or RGBA
-    */
-   if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
-      png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n");
-   if(filter_type != PNG_FILTER_TYPE_BASE)
-   {
-     if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
-        (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
-        ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
-        (color_type == PNG_COLOR_TYPE_RGB || 
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
-        png_error(png_ptr, "Unknown filter method in IHDR");
-     if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
-        png_warning(png_ptr, "Invalid filter method in IHDR");
-   }
-#else
-   if(filter_type != PNG_FILTER_TYPE_BASE)
-      png_error(png_ptr, "Unknown filter method in IHDR");
-#endif
-
-   info_ptr->width = width;
-   info_ptr->height = height;
-   info_ptr->bit_depth = (png_byte)bit_depth;
-   info_ptr->color_type =(png_byte) color_type;
-   info_ptr->compression_type = (png_byte)compression_type;
-   info_ptr->filter_type = (png_byte)filter_type;
-   info_ptr->interlace_type = (png_byte)interlace_type;
-   if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-      info_ptr->channels = 1;
-   else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
-      info_ptr->channels = 3;
-   else
-      info_ptr->channels = 1;
-   if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
-      info_ptr->channels++;
-   info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
-
-   /* check for overflow */
-   rowbytes_per_pixel = (info_ptr->pixel_depth + 7) >> 3;
-   if ( width > PNG_MAX_UINT/rowbytes_per_pixel - 64)
-   {
-      png_warning(png_ptr,
-         "Width too large to process image data; rowbytes will overflow.");
-      info_ptr->rowbytes = (png_size_t)0;
-   }
-   else
-      info_ptr->rowbytes = (info_ptr->width * info_ptr->pixel_depth + 7) >> 3;
-}
-
-#if defined(PNG_oFFs_SUPPORTED)
-void PNGAPI
-png_set_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 storage function\n", "oFFs");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   info_ptr->x_offset = offset_x;
-   info_ptr->y_offset = offset_y;
-   info_ptr->offset_unit_type = (png_byte)unit_type;
-   info_ptr->valid |= PNG_INFO_oFFs;
-}
-#endif
-
-#if defined(PNG_pCAL_SUPPORTED)
-void PNGAPI
-png_set_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_uint_32 length;
-   int i;
-
-   png_debug1(1, "in %s storage function\n", "pCAL");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   length = png_strlen(purpose) + 1;
-   png_debug1(3, "allocating purpose for info (%lu bytes)\n", length);
-   info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length);
-   if (info_ptr->pcal_purpose == NULL)
-     {
-       png_warning(png_ptr, "Insufficient memory for pCAL purpose.");
-       return;
-     }
-   png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length);
-
-   png_debug(3, "storing X0, X1, type, and nparams in info\n");
-   info_ptr->pcal_X0 = X0;
-   info_ptr->pcal_X1 = X1;
-   info_ptr->pcal_type = (png_byte)type;
-   info_ptr->pcal_nparams = (png_byte)nparams;
-
-   length = png_strlen(units) + 1;
-   png_debug1(3, "allocating units for info (%lu bytes)\n", length);
-   info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length);
-   if (info_ptr->pcal_units == NULL)
-     {
-       png_warning(png_ptr, "Insufficient memory for pCAL units.");
-       return;
-     }
-   png_memcpy(info_ptr->pcal_units, units, (png_size_t)length);
-
-   info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr,
-      (png_uint_32)((nparams + 1) * sizeof(png_charp)));
-   if (info_ptr->pcal_params == NULL)
-     {
-       png_warning(png_ptr, "Insufficient memory for pCAL params.");
-       return;
-     }
-
-   info_ptr->pcal_params[nparams] = NULL;
-
-   for (i = 0; i < nparams; i++)
-   {
-      length = png_strlen(params[i]) + 1;
-      png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i, length);
-      info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
-      if (info_ptr->pcal_params[i] == NULL)
-        {
-          png_warning(png_ptr, "Insufficient memory for pCAL parameter.");
-          return;
-        }
-      png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length);
-   }
-
-   info_ptr->valid |= PNG_INFO_pCAL;
-#ifdef PNG_FREE_ME_SUPPORTED
-   info_ptr->free_me |= PNG_FREE_PCAL;
-#endif
-}
-#endif
-
-#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_sCAL(png_structp png_ptr, png_infop info_ptr,
-             int unit, double width, double height)
-{
-   png_debug1(1, "in %s storage function\n", "sCAL");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   info_ptr->scal_unit = (png_byte)unit;
-   info_ptr->scal_pixel_width = width;
-   info_ptr->scal_pixel_height = height;
-
-   info_ptr->valid |= PNG_INFO_sCAL;
-}
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
-void PNGAPI
-png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
-             int unit, png_charp swidth, png_charp sheight)
-{
-   png_uint_32 length;
-
-   png_debug1(1, "in %s storage function\n", "sCAL");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   info_ptr->scal_unit = (png_byte)unit;
-
-   length = png_strlen(swidth) + 1;
-   png_debug1(3, "allocating unit for info (%d bytes)\n", length);
-   info_ptr->scal_s_width = (png_charp)png_malloc(png_ptr, length);
-   png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
-
-   length = png_strlen(sheight) + 1;
-   png_debug1(3, "allocating unit for info (%d bytes)\n", length);
-   info_ptr->scal_s_height = (png_charp)png_malloc(png_ptr, length);
-   png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
-
-   info_ptr->valid |= PNG_INFO_sCAL;
-#ifdef PNG_FREE_ME_SUPPORTED
-   info_ptr->free_me |= PNG_FREE_SCAL;
-#endif
-}
-#endif
-#endif
-#endif
-
-#if defined(PNG_pHYs_SUPPORTED)
-void PNGAPI
-png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
-   png_uint_32 res_x, png_uint_32 res_y, int unit_type)
-{
-   png_debug1(1, "in %s storage function\n", "pHYs");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   info_ptr->x_pixels_per_unit = res_x;
-   info_ptr->y_pixels_per_unit = res_y;
-   info_ptr->phys_unit_type = (png_byte)unit_type;
-   info_ptr->valid |= PNG_INFO_pHYs;
-}
-#endif
-
-void PNGAPI
-png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
-   png_colorp palette, int num_palette)
-{
-
-   png_debug1(1, "in %s storage function\n", "PLTE");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   /*
-    * It may not actually be necessary to set png_ptr->palette here;
-    * we do it for backward compatibility with the way the png_handle_tRNS
-    * function used to do the allocation.
-    */
-#ifdef PNG_FREE_ME_SUPPORTED
-   png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
-#endif
-   /* Changed in libpng-1.2.1 to allocate 256 instead of num_palette entries,
-      in case of an invalid PNG file that has too-large sample values. */
-   png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)256,
-      sizeof (png_color));
-   if (png_ptr->palette == NULL)
-      png_error(png_ptr, "Unable to malloc palette");
-   png_memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color));
-   info_ptr->palette = png_ptr->palette;
-   info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
-
-#ifdef PNG_FREE_ME_SUPPORTED
-   info_ptr->free_me |= PNG_FREE_PLTE;
-#else
-   png_ptr->flags |= PNG_FLAG_FREE_PLTE;
-#endif
-
-   info_ptr->valid |= PNG_INFO_PLTE;
-}
-
-#if defined(PNG_sBIT_SUPPORTED)
-void PNGAPI
-png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
-   png_color_8p sig_bit)
-{
-   png_debug1(1, "in %s storage function\n", "sBIT");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   png_memcpy(&(info_ptr->sig_bit), sig_bit, sizeof (png_color_8));
-   info_ptr->valid |= PNG_INFO_sBIT;
-}
-#endif
-
-#if defined(PNG_sRGB_SUPPORTED)
-void PNGAPI
-png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
-{
-   png_debug1(1, "in %s storage function\n", "sRGB");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   info_ptr->srgb_intent = (png_byte)intent;
-   info_ptr->valid |= PNG_INFO_sRGB;
-}
-
-void PNGAPI
-png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
-   int intent)
-{
-#if defined(PNG_gAMA_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   float file_gamma;
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   png_fixed_point int_file_gamma;
-#endif
-#endif
-#if defined(PNG_cHRM_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
-      int_green_y, int_blue_x, int_blue_y;
-#endif
-#endif
-   png_debug1(1, "in %s storage function\n", "sRGB_gAMA_and_cHRM");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   png_set_sRGB(png_ptr, info_ptr, intent);
-
-#if defined(PNG_gAMA_SUPPORTED)
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   file_gamma = (float).45455;
-   png_set_gAMA(png_ptr, info_ptr, file_gamma);
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   int_file_gamma = 45455L;
-   png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
-#endif
-#endif
-
-#if defined(PNG_cHRM_SUPPORTED)
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   int_white_x = 31270L;
-   int_white_y = 32900L;
-   int_red_x   = 64000L;
-   int_red_y   = 33000L;
-   int_green_x = 30000L;
-   int_green_y = 60000L;
-   int_blue_x  = 15000L;
-   int_blue_y  =  6000L;
-
-   png_set_cHRM_fixed(png_ptr, info_ptr,
-      int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y,
-      int_blue_x, int_blue_y);
-#endif
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   white_x = (float).3127;
-   white_y = (float).3290;
-   red_x   = (float).64;
-   red_y   = (float).33;
-   green_x = (float).30;
-   green_y = (float).60;
-   blue_x  = (float).15;
-   blue_y  = (float).06;
-
-   png_set_cHRM(png_ptr, info_ptr,
-      white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
-#endif
-#endif
-}
-#endif
-
-
-#if defined(PNG_iCCP_SUPPORTED)
-void PNGAPI
-png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
-             png_charp name, int compression_type,
-             png_charp profile, png_uint_32 proflen)
-{
-   png_charp new_iccp_name;
-   png_charp new_iccp_profile;
-
-   png_debug1(1, "in %s storage function\n", "iCCP");
-   if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
-      return;
-
-   new_iccp_name = (png_charp)png_malloc(png_ptr, png_strlen(name)+1);
-   png_strcpy(new_iccp_name, name);
-   new_iccp_profile = (png_charp)png_malloc(png_ptr, proflen);
-   png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
-
-   png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
-
-   info_ptr->iccp_proflen = proflen;
-   info_ptr->iccp_name = new_iccp_name;
-   info_ptr->iccp_profile = new_iccp_profile;
-   /* Compression is always zero but is here so the API and info structure
-    * does not have to change if we introduce multiple compression types */
-   info_ptr->iccp_compression = (png_byte)compression_type;
-#ifdef PNG_FREE_ME_SUPPORTED
-   info_ptr->free_me |= PNG_FREE_ICCP;
-#endif
-   info_ptr->valid |= PNG_INFO_iCCP;
-}
-#endif
-
-#if defined(PNG_TEXT_SUPPORTED)
-void PNGAPI
-png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
-   int num_text)
-{
-   int ret;
-   ret=png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
-   if (ret)
-     png_error(png_ptr, "Insufficient memory to store text");
-}
-
-int /* PRIVATE */
-png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
-   int num_text)
-{
-   int i;
-
-   png_debug1(1, "in %s storage function\n", (png_ptr->chunk_name[0] == '\0' ?
-      "text" : (png_const_charp)png_ptr->chunk_name));
-
-   if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
-      return(0);
-
-   /* Make sure we have enough space in the "text" array in info_struct
-    * to hold all of the incoming text_ptr objects.
-    */
-   if (info_ptr->num_text + num_text > info_ptr->max_text)
-   {
-      if (info_ptr->text != NULL)
-      {
-         png_textp old_text;
-         int old_max;
-
-         old_max = info_ptr->max_text;
-         info_ptr->max_text = info_ptr->num_text + num_text + 8;
-         old_text = info_ptr->text;
-         info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
-            (png_uint_32)(info_ptr->max_text * sizeof (png_text)));
-         if (info_ptr->text == NULL)
-           {
-             png_free(png_ptr, old_text);
-             return(1);
-           }
-         png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
-            sizeof(png_text)));
-         png_free(png_ptr, old_text);
-      }
-      else
-      {
-         info_ptr->max_text = num_text + 8;
-         info_ptr->num_text = 0;
-         info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
-            (png_uint_32)(info_ptr->max_text * sizeof (png_text)));
-         if (info_ptr->text == NULL)
-           return(1);
-#ifdef PNG_FREE_ME_SUPPORTED
-         info_ptr->free_me |= PNG_FREE_TEXT;
-#endif
-      }
-      png_debug1(3, "allocated %d entries for info_ptr->text\n",
-         info_ptr->max_text);
-   }
-   for (i = 0; i < num_text; i++)
-   {
-      png_size_t text_length,key_len;
-      png_size_t lang_len,lang_key_len;
-      png_textp textp = &(info_ptr->text[info_ptr->num_text]);
-
-      if (text_ptr[i].key == NULL)
-          continue;
-
-      key_len = png_strlen(text_ptr[i].key);
-
-      if(text_ptr[i].compression <= 0)
-      {
-        lang_len = 0;
-        lang_key_len = 0;
-      }
-      else
-#ifdef PNG_iTXt_SUPPORTED
-      {
-        /* set iTXt data */
-        if (text_ptr[i].lang != NULL)
-          lang_len = png_strlen(text_ptr[i].lang);
-        else
-          lang_len = 0;
-        if (text_ptr[i].lang_key != NULL)
-          lang_key_len = png_strlen(text_ptr[i].lang_key);
-        else
-          lang_key_len = 0;
-      }
-#else
-      {
-        png_warning(png_ptr, "iTXt chunk not supported.");
-        continue;
-      }
-#endif
-
-      if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
-      {
-         text_length = 0;
-#ifdef PNG_iTXt_SUPPORTED
-         if(text_ptr[i].compression > 0)
-            textp->compression = PNG_ITXT_COMPRESSION_NONE;
-         else
-#endif
-            textp->compression = PNG_TEXT_COMPRESSION_NONE;
-      }
-      else
-      {
-         text_length = png_strlen(text_ptr[i].text);
-         textp->compression = text_ptr[i].compression;
-      }
-
-      textp->key = (png_charp)png_malloc_warn(png_ptr,
-         (png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4));
-      if (textp->key == NULL)
-        return(1);
-      png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n",
-         (png_uint_32)(key_len + lang_len + lang_key_len + text_length + 4),
-         (int)textp->key);
-
-      png_memcpy(textp->key, text_ptr[i].key,
-         (png_size_t)(key_len));
-      *(textp->key+key_len) = '\0';
-#ifdef PNG_iTXt_SUPPORTED
-      if (text_ptr[i].compression > 0)
-      {
-         textp->lang=textp->key + key_len + 1;
-         png_memcpy(textp->lang, text_ptr[i].lang, lang_len);
-         *(textp->lang+lang_len) = '\0';
-         textp->lang_key=textp->lang + lang_len + 1;
-         png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len);
-         *(textp->lang_key+lang_key_len) = '\0';
-         textp->text=textp->lang_key + lang_key_len + 1;
-      }
-      else
-#endif
-      {
-#ifdef PNG_iTXt_SUPPORTED
-         textp->lang=NULL;
-         textp->lang_key=NULL;
-#endif
-         textp->text=textp->key + key_len + 1;
-      }
-      if(text_length)
-         png_memcpy(textp->text, text_ptr[i].text,
-            (png_size_t)(text_length));
-      *(textp->text+text_length) = '\0';
-
-#ifdef PNG_iTXt_SUPPORTED
-      if(textp->compression > 0)
-      {
-         textp->text_length = 0;
-         textp->itxt_length = text_length;
-      }
-      else
-#endif
-      {
-         textp->text_length = text_length;
-#ifdef PNG_iTXt_SUPPORTED
-         textp->itxt_length = 0;
-#endif
-      }
-      info_ptr->text[info_ptr->num_text]= *textp;
-      info_ptr->num_text++;
-      png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text);
-   }
-   return(0);
-}
-#endif
-
-#if defined(PNG_tIME_SUPPORTED)
-void PNGAPI
-png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
-{
-   png_debug1(1, "in %s storage function\n", "tIME");
-   if (png_ptr == NULL || info_ptr == NULL ||
-       (png_ptr->mode & PNG_WROTE_tIME))
-      return;
-
-   png_memcpy(&(info_ptr->mod_time), mod_time, sizeof (png_time));
-   info_ptr->valid |= PNG_INFO_tIME;
-}
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED)
-void PNGAPI
-png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
-   png_bytep trans, int num_trans, png_color_16p trans_values)
-{
-   png_debug1(1, "in %s storage function\n", "tRNS");
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   if (trans != NULL)
-   {
-       /*
-        * It may not actually be necessary to set png_ptr->trans here;
-        * we do it for backward compatibility with the way the png_handle_tRNS
-        * function used to do the allocation.
-        */
-#ifdef PNG_FREE_ME_SUPPORTED
-       png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
-#endif
-       /* Changed from num_trans to 256 in version 1.2.1 */
-       png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
-           (png_uint_32)256);
-       png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
-#ifdef PNG_FREE_ME_SUPPORTED
-       info_ptr->free_me |= PNG_FREE_TRNS;
-#else
-       png_ptr->flags |= PNG_FLAG_FREE_TRNS;
-#endif
-   }
-
-   if (trans_values != NULL)
-   {
-      png_memcpy(&(info_ptr->trans_values), trans_values,
-         sizeof(png_color_16));
-      if (num_trans == 0)
-        num_trans = 1;
-   }
-   info_ptr->num_trans = (png_uint_16)num_trans;
-   info_ptr->valid |= PNG_INFO_tRNS;
-}
-#endif
-
-#if defined(PNG_sPLT_SUPPORTED)
-void PNGAPI
-png_set_sPLT(png_structp png_ptr,
-             png_infop info_ptr, png_sPLT_tp entries, int nentries)
-{
-    png_sPLT_tp np;
-    int i;
-
-    np = (png_sPLT_tp)png_malloc_warn(png_ptr,
-        (info_ptr->splt_palettes_num + nentries) * sizeof(png_sPLT_t));
-    if (np == NULL)
-    {
-      png_warning(png_ptr, "No memory for sPLT palettes.");
-      return;
-    }
-
-    png_memcpy(np, info_ptr->splt_palettes,
-           info_ptr->splt_palettes_num * sizeof(png_sPLT_t));
-    png_free(png_ptr, info_ptr->splt_palettes);
-    info_ptr->splt_palettes=NULL;
-
-    for (i = 0; i < nentries; i++)
-    {
-        png_sPLT_tp to = np + info_ptr->splt_palettes_num + i;
-        png_sPLT_tp from = entries + i;
-
-        to->name = (png_charp)png_malloc(png_ptr,
-            png_strlen(from->name) + 1);
-        png_strcpy(to->name, from->name);
-        to->entries = (png_sPLT_entryp)png_malloc(png_ptr,
-            from->nentries * sizeof(png_sPLT_t));
-        png_memcpy(to->entries, from->entries,
-            from->nentries * sizeof(png_sPLT_t));
-        to->nentries = from->nentries;
-        to->depth = from->depth;
-    }
-
-    info_ptr->splt_palettes = np;
-    info_ptr->splt_palettes_num += nentries;
-    info_ptr->valid |= PNG_INFO_sPLT;
-#ifdef PNG_FREE_ME_SUPPORTED
-    info_ptr->free_me |= PNG_FREE_SPLT;
-#endif
-}
-#endif /* PNG_sPLT_SUPPORTED */
-
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-void PNGAPI
-png_set_unknown_chunks(png_structp png_ptr,
-   png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
-{
-    png_unknown_chunkp np;
-    int i;
-
-    if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
-        return;
-
-    np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
-        (info_ptr->unknown_chunks_num + num_unknowns) *
-        sizeof(png_unknown_chunk));
-    if (np == NULL)
-    {
-       png_warning(png_ptr, "Out of memory while processing unknown chunk.");
-       return;
-    }
-
-    png_memcpy(np, info_ptr->unknown_chunks,
-           info_ptr->unknown_chunks_num * sizeof(png_unknown_chunk));
-    png_free(png_ptr, info_ptr->unknown_chunks);
-    info_ptr->unknown_chunks=NULL;
-
-    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_strcpy((png_charp)to->name, (png_charp)from->name);
-        to->data = (png_bytep)png_malloc(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);
-        }
-    }
-
-    info_ptr->unknown_chunks = np;
-    info_ptr->unknown_chunks_num += num_unknowns;
-#ifdef PNG_FREE_ME_SUPPORTED
-    info_ptr->free_me |= PNG_FREE_UNKN;
-#endif
-}
-void PNGAPI
-png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
-   int chunk, int location)
-{
-   if(png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
-         (int)info_ptr->unknown_chunks_num)
-      info_ptr->unknown_chunks[chunk].location = (png_byte)location;
-}
-#endif
-
-#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
-    defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
-void PNGAPI
-png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted)
-{
-   /* This function is deprecated in favor of png_permit_mng_features()
-      and will be removed from libpng-2.0.0 */
-   png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n");
-   if (png_ptr == NULL)
-      return;
-   png_ptr->mng_features_permitted = (png_byte)
-     ((png_ptr->mng_features_permitted & (~(PNG_FLAG_MNG_EMPTY_PLTE))) |
-     ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE)));
-}
-#endif
-
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
-png_uint_32 PNGAPI
-png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
-{
-   png_debug(1, "in png_permit_mng_features\n");
-   if (png_ptr == NULL)
-      return (png_uint_32)0;
-   png_ptr->mng_features_permitted =
-     (png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
-   return (png_uint_32)png_ptr->mng_features_permitted;
-}
-#endif
-
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-void PNGAPI
-png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
-   chunk_list, int num_chunks)
-{
-    png_bytep new_list, p;
-    int i, old_num_chunks;
-    if (num_chunks == 0)
-    {
-      if(keep == HANDLE_CHUNK_ALWAYS || keep == HANDLE_CHUNK_IF_SAFE)
-        png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
-      else
-        png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
-
-      if(keep == HANDLE_CHUNK_ALWAYS)
-        png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
-      else
-        png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
-      return;
-    }
-    if (chunk_list == NULL)
-      return;
-    old_num_chunks=png_ptr->num_chunk_list;
-    new_list=(png_bytep)png_malloc(png_ptr,
-       (png_uint_32)(5*(num_chunks+old_num_chunks)));
-    if(png_ptr->chunk_list != NULL)
-    {
-       png_memcpy(new_list, png_ptr->chunk_list,
-          (png_size_t)(5*old_num_chunks));
-       png_free(png_ptr, png_ptr->chunk_list);
-       png_ptr->chunk_list=NULL;
-    }
-    png_memcpy(new_list+5*old_num_chunks, chunk_list,
-       (png_size_t)(5*num_chunks));
-    for (p=new_list+5*old_num_chunks+4, i=0; i<num_chunks; i++, p+=5)
-       *p=(png_byte)keep;
-    png_ptr->num_chunk_list=old_num_chunks+num_chunks;
-    png_ptr->chunk_list=new_list;
-#ifdef PNG_FREE_ME_SUPPORTED
-    png_ptr->free_me |= PNG_FREE_LIST;
-#endif
-}
-#endif
-
-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-void PNGAPI
-png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
-   png_user_chunk_ptr read_user_chunk_fn)
-{
-   png_debug(1, "in png_set_read_user_chunk_fn\n");
-   png_ptr->read_user_chunk_fn = read_user_chunk_fn;
-   png_ptr->user_chunk_ptr = user_chunk_ptr;
-}
-#endif
-
-#if defined(PNG_INFO_IMAGE_SUPPORTED)
-void PNGAPI
-png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
-{
-   png_debug1(1, "in %s storage function\n", "rows");
-
-   if (png_ptr == NULL || info_ptr == NULL)
-      return;
-
-   if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
-      png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
-   info_ptr->row_pointers = row_pointers;
-   if(row_pointers)
-      info_ptr->valid |= PNG_INFO_IDAT;
-}
-#endif
-
-void PNGAPI
-png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
-{
-    if(png_ptr->zbuf)
-       png_free(png_ptr, png_ptr->zbuf);
-    png_ptr->zbuf_size = (png_size_t)size;
-    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
-    png_ptr->zstream.next_out = png_ptr->zbuf;
-    png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
-}
-
-void PNGAPI
-png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
-{
-   if (png_ptr && info_ptr)
-      info_ptr->valid &= ~(mask);
-}
-
-
-#ifndef PNG_1_0_X
-#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
-/* this function was added to libpng 1.2.0 and should always exist by default */
-void PNGAPI
-png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
-{
-    png_uint_32 settable_asm_flags;
-    png_uint_32 settable_mmx_flags;
-
-    settable_mmx_flags =
-#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
-                         PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
-#endif
-#ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
-                         PNG_ASM_FLAG_MMX_READ_INTERLACE    |
-#endif
-#ifdef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
-                         PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
-                         PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
-                         PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
-                         PNG_ASM_FLAG_MMX_READ_FILTER_PAETH |
-#endif
-                         0;
-
-    /* could be some non-MMX ones in the future, but not currently: */
-    settable_asm_flags = settable_mmx_flags;
-
-    if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) ||
-        !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU))
-    {
-        /* clear all MMX flags if MMX isn't supported */
-        settable_asm_flags &= ~settable_mmx_flags;
-        png_ptr->asm_flags &= ~settable_mmx_flags;
-    }
-
-    /* we're replacing the settable bits with those passed in by the user,
-     * so first zero them out of the master copy, then logical-OR in the
-     * allowed subset that was requested */
-
-    png_ptr->asm_flags &= ~settable_asm_flags;               /* zero them */
-    png_ptr->asm_flags |= (asm_flags & settable_asm_flags);  /* set them */
-}
-#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
-
-#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
-/* this function was added to libpng 1.2.0 */
-void PNGAPI
-png_set_mmx_thresholds (png_structp png_ptr,
-                        png_byte mmx_bitdepth_threshold,
-                        png_uint_32 mmx_rowbytes_threshold)
-{
-    png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold;
-    png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold;
-}
-#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
-#endif /* ?PNG_1_0_X */