From 200dedbe5840fa9fb7e7f24c96d12458f296dc0d Mon Sep 17 00:00:00 2001
From: George Hazan <ghazan@miranda.im>
Date: Fri, 4 Aug 2017 13:13:55 +0300
Subject: update to libpng 1.6.31

---
 plugins/AdvaImg/src/LibPNG/pngset.c | 48 ++++++++++++++++++++++++++++++++-----
 1 file changed, 42 insertions(+), 6 deletions(-)

(limited to 'plugins/AdvaImg/src/LibPNG/pngset.c')

diff --git a/plugins/AdvaImg/src/LibPNG/pngset.c b/plugins/AdvaImg/src/LibPNG/pngset.c
index 843d302825..7c6ed11a44 100644
--- a/plugins/AdvaImg/src/LibPNG/pngset.c
+++ b/plugins/AdvaImg/src/LibPNG/pngset.c
@@ -1,8 +1,8 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.6.26 [October 20, 2016]
- * Copyright (c) 1998-2016 Glenn Randers-Pehrson
+ * Last changed in libpng 1.6.30 [June 28, 2017]
+ * Copyright (c) 1998-2017 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.)
  *
@@ -134,6 +134,39 @@ png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
 
 #endif /* cHRM */
 
+#ifdef PNG_eXIf_SUPPORTED
+void PNGAPI
+png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
+    const png_bytep eXIf_buf)
+{
+   int i;
+
+   png_debug1(1, "in %s storage function", "eXIf");
+
+   if (png_ptr == NULL || info_ptr == NULL)
+      return;
+
+   png_free_data(png_ptr, info_ptr, PNG_FREE_EXIF, 0);
+
+   info_ptr->exif = png_voidcast(png_bytep, png_malloc_warn(png_ptr,
+       info_ptr->num_exif));
+
+   if (info_ptr->exif == NULL)
+   {
+      png_warning(png_ptr, "Insufficient memory for eXIf chunk data");
+
+      return;
+   }
+
+   info_ptr->free_me |= PNG_FREE_EXIF;
+
+   for (i = 0; i < info_ptr->num_exif; i++)
+      info_ptr->exif[i] = eXIf_buf[i];
+
+   info_ptr->valid |= PNG_INFO_eXIf;
+}
+#endif /* eXIf */
+
 #ifdef PNG_gAMA_SUPPORTED
 void PNGFAPI
 png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
@@ -1102,8 +1135,9 @@ png_set_sPLT(png_const_structrp png_ptr,
       info_ptr->valid |= PNG_INFO_sPLT;
       ++(info_ptr->splt_palettes_num);
       ++np;
+      ++entries;
    }
-   while (++entries, --nentries);
+   while (--nentries);
 
    if (nentries > 0)
       png_chunk_report(png_ptr, "sPLT out of memory", PNG_CHUNK_WRITE_ERROR);
@@ -1696,14 +1730,16 @@ png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
       png_byte ch = (png_byte)*key++;
 
       if ((ch > 32 && ch <= 126) || (ch >= 161 /*&& ch <= 255*/))
-         *new_key++ = ch, ++key_len, space = 0;
+      {
+         *new_key++ = ch; ++key_len; space = 0;
+      }
 
       else if (space == 0)
       {
          /* A space or an invalid character when one wasn't seen immediately
           * before; output just a space.
           */
-         *new_key++ = 32, ++key_len, space = 1;
+         *new_key++ = 32; ++key_len; space = 1;
 
          /* If the character was not a space then it is invalid. */
          if (ch != 32)
@@ -1716,7 +1752,7 @@ png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
 
    if (key_len > 0 && space != 0) /* trailing space */
    {
-      --key_len, --new_key;
+      --key_len; --new_key;
       if (bad_character == 0)
          bad_character = 32;
    }
-- 
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