Updated the bundled libpng to v1.2.35 (released 18 Feb. 2009)

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@6684 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 157 insertions, 195 deletions

diff --git a/png/pngset.c b/png/pngset.c
index da87a0f91..9e12b0db8 100644
--- a/png/pngset.c
+++ b/png/pngset.c
@@ -1,9 +1,9 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.30 [August 15, 2008]
+ * Last changed in libpng 1.2.35 [February 14, 2009]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2009 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.)
  *
@@ -21,7 +21,7 @@
 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");
+   png_debug1(1, "in %s storage function", "bKGD");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -37,34 +37,9 @@ 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");
+   png_debug1(1, "in %s storage function", "cHRM");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
-   if (!(white_x || white_y || red_x || red_y || green_x || green_y ||
-       blue_x || blue_y))
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set all-zero chromaticity values");
-      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;
@@ -86,7 +61,8 @@ png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
 #endif
    info_ptr->valid |= PNG_INFO_cHRM;
 }
-#endif
+#endif /* PNG_FLOATING_POINT_SUPPORTED */
+
 #ifdef PNG_FIXED_POINT_SUPPORTED
 void PNGAPI
 png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
@@ -94,61 +70,38 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
    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");
+   png_debug1(1, "in %s storage function", "cHRM fixed");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   if (!(white_x || white_y || red_x || red_y || green_x || green_y ||
-       blue_x || blue_y))
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set all-zero chromaticity values");
-      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 > (png_fixed_point) PNG_UINT_31_MAX ||
-       white_y > (png_fixed_point) PNG_UINT_31_MAX ||
-         red_x > (png_fixed_point) PNG_UINT_31_MAX ||
-         red_y > (png_fixed_point) PNG_UINT_31_MAX ||
-       green_x > (png_fixed_point) PNG_UINT_31_MAX ||
-       green_y > (png_fixed_point) PNG_UINT_31_MAX ||
-        blue_x > (png_fixed_point) PNG_UINT_31_MAX ||
-        blue_y > (png_fixed_point) PNG_UINT_31_MAX )
+#if !defined(PNG_NO_CHECK_cHRM)
+   if (png_check_cHRM_fixed(png_ptr,
+      white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y))
+#endif
    {
-      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;
+     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;
+     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
+#endif /* PNG_FIXED_POINT_SUPPORTED */
+#endif /* PNG_cHRM_SUPPORTED */
 
 #if defined(PNG_gAMA_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -156,7 +109,7 @@ 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");
+   png_debug1(1, "in %s storage function", "gAMA");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -167,13 +120,13 @@ png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
       gamma=21474.83;
    }
    else
-      gamma=file_gamma;
+      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)
+   if (gamma == 0.0)
       png_warning(png_ptr, "Setting gamma=0");
 }
 #endif
@@ -183,7 +136,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
 {
    png_fixed_point gamma;
 
-   png_debug1(1, "in %s storage function\n", "gAMA");
+   png_debug1(1, "in %s storage function", "gAMA");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -197,10 +150,10 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
      if (int_gamma < 0)
      {
        png_warning(png_ptr, "Setting negative gamma to zero");
-       gamma=0;
+       gamma = 0;
      }
      else
-       gamma=int_gamma;
+       gamma = int_gamma;
    }
 #ifdef PNG_FLOATING_POINT_SUPPORTED
    info_ptr->gamma = (float)(gamma/100000.);
@@ -209,7 +162,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
    info_ptr->int_gamma = gamma;
 #endif
    info_ptr->valid |= PNG_INFO_gAMA;
-   if(gamma == 0)
+   if (gamma == 0)
       png_warning(png_ptr, "Setting gamma=0");
 }
 #endif
@@ -220,7 +173,7 @@ 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");
+   png_debug1(1, "in %s storage function", "hIST");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
    if (info_ptr->num_palette == 0 || info_ptr->num_palette
@@ -237,7 +190,7 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
    /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in version
       1.2.1 */
    png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr,
-      (png_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof (png_uint_16)));
+      (png_uint_32)(PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)));
    if (png_ptr->hist == NULL)
      {
        png_warning(png_ptr, "Insufficient memory for hIST chunk data.");
@@ -263,7 +216,7 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
    int color_type, int interlace_type, int compression_type,
    int filter_type)
 {
-   png_debug1(1, "in %s storage function\n", "IHDR");
+   png_debug1(1, "in %s storage function", "IHDR");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -318,21 +271,21 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
     * 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");
-   if(filter_type != PNG_FILTER_TYPE_BASE)
+   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");
+   if (filter_type != PNG_FILTER_TYPE_BASE)
    {
-     if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+     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)
+     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)
+   if (filter_type != PNG_FILTER_TYPE_BASE)
       png_error(png_ptr, "Unknown filter method in IHDR");
 #endif
 
@@ -362,7 +315,7 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
                  - 8)       /* extra max_pixel_depth pad */
       info_ptr->rowbytes = (png_size_t)0;
    else
-      info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,width);
+      info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
 }
 
 #if defined(PNG_oFFs_SUPPORTED)
@@ -370,7 +323,7 @@ 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");
+   png_debug1(1, "in %s storage function", "oFFs");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -390,66 +343,67 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
    png_uint_32 length;
    int i;
 
-   png_debug1(1, "in %s storage function\n", "pCAL");
+   png_debug1(1, "in %s storage function", "pCAL");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
    length = png_strlen(purpose) + 1;
-   png_debug1(3, "allocating purpose for info (%lu bytes)\n",
+   png_debug1(3, "allocating purpose for info (%lu bytes)",
      (unsigned long)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;
-     }
+      return;
+   }
    png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length);
 
-   png_debug(3, "storing X0, X1, type, and nparams in info\n");
+   png_debug(3, "storing X0, X1, type, and nparams in info");
    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",
+   png_debug1(3, "allocating units for info (%lu bytes)",
      (unsigned long)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;
-     }
+      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) * png_sizeof(png_charp)));
    if (info_ptr->pcal_params == NULL)
-     {
+   {
        png_warning(png_ptr, "Insufficient memory for pCAL params.");
-       return;
-     }
+      return;
+   }
 
-   info_ptr->pcal_params[nparams] = NULL;
+#ifdef PNG_FREE_ME_SUPPORTED
+   info_ptr->free_me |= PNG_FREE_PCAL;
+#endif
+
+   png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp));
 
    for (i = 0; i < nparams; i++)
    {
       length = png_strlen(params[i]) + 1;
-      png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i,
+      png_debug2(3, "allocating parameter %d for info (%lu bytes)", i,
         (unsigned long)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
 
@@ -459,7 +413,7 @@ 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");
+   png_debug1(1, "in %s storage function", "sCAL");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -477,14 +431,14 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
 {
    png_uint_32 length;
 
-   png_debug1(1, "in %s storage function\n", "sCAL");
+   png_debug1(1, "in %s storage function", "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 (%u bytes)\n",
+   png_debug1(3, "allocating unit for info (%u bytes)",
       (unsigned int)length);
    info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length);
    if (info_ptr->scal_s_width == NULL)
@@ -496,7 +450,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
    png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
 
    length = png_strlen(sheight) + 1;
-   png_debug1(3, "allocating unit for info (%u bytes)\n",
+   png_debug1(3, "allocating unit for info (%u bytes)",
       (unsigned int)length);
    info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length);
    if (info_ptr->scal_s_height == NULL)
@@ -522,7 +476,7 @@ 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");
+   png_debug1(1, "in %s storage function", "pHYs");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -538,7 +492,7 @@ 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");
+   png_debug1(1, "in %s storage function", "PLTE");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -569,7 +523,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
       PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
    png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH *
       png_sizeof(png_color));
-   png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof (png_color));
+   png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color));
    info_ptr->palette = png_ptr->palette;
    info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
 
@@ -587,11 +541,11 @@ 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");
+   png_debug1(1, "in %s storage function", "sBIT");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof (png_color_8));
+   png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8));
    info_ptr->valid |= PNG_INFO_sBIT;
 }
 #endif
@@ -600,7 +554,7 @@ png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
 void PNGAPI
 png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
 {
-   png_debug1(1, "in %s storage function\n", "sRGB");
+   png_debug1(1, "in %s storage function", "sRGB");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -624,12 +578,10 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
 #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");
+   png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -647,7 +599,6 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
 #endif
 
 #if defined(PNG_cHRM_SUPPORTED)
-#ifdef PNG_FIXED_POINT_SUPPORTED
    int_white_x = 31270L;
    int_white_y = 32900L;
    int_red_x   = 64000L;
@@ -657,10 +608,6 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
    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;
@@ -670,13 +617,27 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
    green_y = (float).60;
    blue_x  = (float).15;
    blue_y  = (float).06;
+#endif
 
-   png_set_cHRM(png_ptr, info_ptr,
-      white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
+#if !defined(PNG_NO_CHECK_cHRM)
+   if (png_check_cHRM_fixed(png_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_FIXED_POINT_SUPPORTED
+     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
+      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 /* cHRM */
+}
+#endif /* sRGB */
 
 
 #if defined(PNG_iCCP_SUPPORTED)
@@ -689,7 +650,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
    png_charp new_iccp_profile;
    png_uint_32 length;
 
-   png_debug1(1, "in %s storage function\n", "iCCP");
+   png_debug1(1, "in %s storage function", "iCCP");
    if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
       return;
 
@@ -732,7 +693,7 @@ 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);
+   ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
    if (ret)
      png_error(png_ptr, "Insufficient memory to store text");
 }
@@ -743,7 +704,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 {
    int i;
 
-   png_debug1(1, "in %s storage function\n", (png_ptr->chunk_name[0] == '\0' ?
+   png_debug1(1, "in %s storage function", (png_ptr->chunk_name[0] == '\0' ?
       "text" : (png_const_charp)png_ptr->chunk_name));
 
    if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
@@ -763,7 +724,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
          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 * png_sizeof (png_text)));
+            (png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
          if (info_ptr->text == NULL)
            {
              png_free(png_ptr, old_text);
@@ -778,20 +739,20 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
          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 * png_sizeof (png_text)));
+            (png_uint_32)(info_ptr->max_text * png_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",
+      png_debug1(3, "allocated %d entries for info_ptr->text",
          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_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)
@@ -799,7 +760,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 
       key_len = png_strlen(text_ptr[i].key);
 
-      if(text_ptr[i].compression <= 0)
+      if (text_ptr[i].compression <= 0)
       {
         lang_len = 0;
         lang_key_len = 0;
@@ -828,7 +789,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
       {
          text_length = 0;
 #ifdef PNG_iTXt_SUPPORTED
-         if(text_ptr[i].compression > 0)
+         if (text_ptr[i].compression > 0)
             textp->compression = PNG_ITXT_COMPRESSION_NONE;
          else
 #endif
@@ -845,24 +806,24 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
          (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_debug2(2, "Allocated %lu bytes at %x in png_set_text",
          (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';
+      *(textp->key + key_len) = '\0';
 #ifdef PNG_iTXt_SUPPORTED
       if (text_ptr[i].compression > 0)
       {
-         textp->lang=textp->key + key_len + 1;
+         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;
+         *(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;
+         *(textp->lang_key + lang_key_len) = '\0';
+         textp->text = textp->lang_key + lang_key_len + 1;
       }
       else
 #endif
@@ -871,15 +832,15 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
          textp->lang=NULL;
          textp->lang_key=NULL;
 #endif
-         textp->text=textp->key + key_len + 1;
+         textp->text = textp->key + key_len + 1;
       }
-      if(text_length)
+      if (text_length)
          png_memcpy(textp->text, text_ptr[i].text,
             (png_size_t)(text_length));
-      *(textp->text+text_length) = '\0';
+      *(textp->text + text_length) = '\0';
 
 #ifdef PNG_iTXt_SUPPORTED
-      if(textp->compression > 0)
+      if (textp->compression > 0)
       {
          textp->text_length = 0;
          textp->itxt_length = text_length;
@@ -893,7 +854,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 #endif
       }
       info_ptr->num_text++;
-      png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text);
+      png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
    }
    return(0);
 }
@@ -903,12 +864,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 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");
+   png_debug1(1, "in %s storage function", "tIME");
    if (png_ptr == NULL || info_ptr == NULL ||
        (png_ptr->mode & PNG_WROTE_tIME))
       return;
 
-   png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof (png_time));
+   png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time));
    info_ptr->valid |= PNG_INFO_tIME;
 }
 #endif
@@ -918,7 +879,7 @@ 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");
+   png_debug1(1, "in %s storage function", "tRNS");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
@@ -961,7 +922,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
    info_ptr->num_trans = (png_uint_16)num_trans;
    if (num_trans != 0)
    {
-   info_ptr->valid |= PNG_INFO_tRNS;
+      info_ptr->valid |= PNG_INFO_tRNS;
 #ifdef PNG_FREE_ME_SUPPORTED
       info_ptr->free_me |= PNG_FREE_TRNS;
 #else
@@ -1000,6 +961,7 @@ png_set_sPLT(png_structp png_ptr,
 
     png_memcpy(np, info_ptr->splt_palettes,
            info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
+
     png_free(png_ptr, info_ptr->splt_palettes);
     info_ptr->splt_palettes=NULL;
 
@@ -1024,7 +986,7 @@ png_set_sPLT(png_structp png_ptr,
         {
            png_warning(png_ptr,
              "Out of memory while processing sPLT chunk");
-           png_free(png_ptr,to->name);
+           png_free(png_ptr, to->name);
            to->name = NULL;
            continue;
         }
@@ -1071,13 +1033,13 @@ 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);
@@ -1088,15 +1050,15 @@ png_set_unknown_chunks(png_structp png_ptr,
        {
           to->data = (png_bytep)png_malloc_warn(png_ptr,
             (png_uint_32)from->size);
-        if (to->data == NULL)
-        {
-           png_warning(png_ptr,
+          if (to->data == NULL)
+          {
+             png_warning(png_ptr,
               "Out of memory while processing unknown chunk.");
              to->size = 0;
-        }
-        else
-           png_memcpy(to->data, from->data, from->size);
-        }
+          }
+          else
+             png_memcpy(to->data, from->data, from->size);
+       }
     }
 
     info_ptr->unknown_chunks = np;
@@ -1109,7 +1071,7 @@ 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 <
+   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;
 }
@@ -1123,7 +1085,7 @@ 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-1.3.0 */
-   png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n");
+   png_debug(1, "in png_permit_empty_plte, DEPRECATED.");
    if (png_ptr == NULL)
       return;
    png_ptr->mng_features_permitted = (png_byte)
@@ -1137,7 +1099,7 @@ png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted)
 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");
+   png_debug(1, "in png_permit_mng_features");
    if (png_ptr == NULL)
       return (png_uint_32)0;
    png_ptr->mng_features_permitted =
@@ -1157,12 +1119,12 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
        return;
     if (num_chunks == 0)
     {
-      if(keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE)
+      if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE)
         png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
       else
         png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
 
-      if(keep == PNG_HANDLE_CHUNK_ALWAYS)
+      if (keep == PNG_HANDLE_CHUNK_ALWAYS)
         png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
       else
         png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
@@ -1170,23 +1132,23 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
     }
     if (chunk_list == NULL)
       return;
-    old_num_chunks=png_ptr->num_chunk_list;
+    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)
+    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_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)
+    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;
+    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
@@ -1198,7 +1160,7 @@ 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_debug(1, "in png_set_read_user_chunk_fn");
    if (png_ptr == NULL)
       return;
    png_ptr->read_user_chunk_fn = read_user_chunk_fn;
@@ -1210,15 +1172,15 @@ png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
 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");
+   png_debug1(1, "in %s storage function", "rows");
 
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   if(info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
+   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)
+   if (row_pointers)
       info_ptr->valid |= PNG_INFO_IDAT;
 }
 #endif
@@ -1230,7 +1192,7 @@ png_set_compression_buffer_size(png_structp png_ptr,
 {
     if (png_ptr == NULL)
        return;
-       png_free(png_ptr, 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;
@@ -1283,7 +1245,7 @@ png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max,
      * rejected by png_set_IHDR().  To accept any PNG datastream
      * regardless of dimensions, set both limits to 0x7ffffffL.
      */
-    if(png_ptr == NULL) return;
+    if (png_ptr == NULL) return;
     png_ptr->user_width_max = user_width_max;
     png_ptr->user_height_max = user_height_max;
 }