XFA: Upgrade libpng to 1.6.20.

third_party/libpng/pnginfo.h

 
 /* pnginfo.h - header file for PNG reference library
  *
+ * Last changed in libpng 1.6.1 [March 28, 2013]
  * Copyright (c) 1998-2013 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.)
  *
- * Last changed in libpng 1.6.1 [March 28, 2013]
- *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
  * and license in png.h
  */
 
  /* png_info is a structure that holds the information in a PNG file so
  * that the application can find out the characteristics of the image.
  * If you are reading the file, this structure will tell you what is
  * in the PNG file.  If you are writing the file, fill in the information
  * you want to put into the PNG file, using png_set_*() functions, then
@@ skipping 94 matching lines @@
     * uncompressed, compressed, and optionally compressed forms, respectively.
     * The data in "text" is an array of pointers to uncompressed,
     * null-terminated C strings. Each chunk has a keyword that describes the
     * textual data contained in that chunk.  Keywords are not required to be
     * unique, and the text string may be empty.  Any number of text chunks may
     * be in an image.
     */
    int num_text; /* number of comments read or comments to write */
    int max_text; /* current size of text array */
    png_textp text; /* array of comments read or comments to write */
-#endif /* PNG_TEXT_SUPPORTED */
+#endif /* TEXT */
 
 #ifdef PNG_tIME_SUPPORTED
    /* The tIME chunk holds the last time the displayed image data was
     * modified.  See the png_time struct for the contents of this struct.
     */
    png_time mod_time;
 #endif
 
 #ifdef PNG_sBIT_SUPPORTED
    /* The sBIT chunk specifies the number of significant high-order bits
@@ skipping 82 matching lines @@
    png_byte pcal_nparams;   /* number of parameters given in pcal_params */
 #endif
 
 /* New members added in libpng-1.0.6 */
    png_uint_32 free_me;     /* flags items libpng is responsible for freeing */
 
 #ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
    /* Storage for unknown chunks that the library doesn't recognize. */
    png_unknown_chunkp unknown_chunks;
 
-   /* The type of this field is limited by the type of 
+   /* The type of this field is limited by the type of
     * png_struct::user_chunk_cache_max, else overflow can occur.
     */
    int                unknown_chunks_num;
 #endif
 
 #ifdef PNG_sPLT_SUPPORTED
    /* Data on sPLT chunks (there may be more than one). */
    png_sPLT_tp splt_palettes;
    int         splt_palettes_num; /* Match type returned by png_get API */
 #endif
@@ skipping 13 matching lines @@
 
 #ifdef PNG_INFO_IMAGE_SUPPORTED
    /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
       non-zero */
    /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
    png_bytepp row_pointers;        /* the image bits */
 #endif
 
 };
 #endif /* PNGINFO_H */