NAME

       dec_png.c - PNG functions.

SYNOPSIS

       #include <stdio.h>
       #include <stdlib.h>
       #include <string.h>
       #include <png.h>
       #include 'grib2.h'

   Typedefs
       typedef struct png_stream png_stream
           Typedef for PNG stream.

   Functions
       int dec_png (unsigned char *pngbuf, g2int *width, g2int *height, char *cout)
           Decode PNG.
       void user_read_data (png_structp png_ptr, png_bytep data, png_uint_32 length)
           Custom read function used so that libpng will read a PNG stream from memory instead of
           a file on disk.

Detailed Description

       PNG functions.

       Author
           Stephen Gilbert

       Definition in file dec_png.c.

Typedef Documentation

   typedef struct png_stream png_stream
       Typedef for PNG stream.

       Definition at line 1 of file dec_png.c.

Function Documentation

   int dec_png (unsigned char * pngbuf, g2int * width, g2int * height, char * cout)
       Decode PNG.

       Parameters
           pngbuf Pointer to PNG buffer.
           width Pointer to width.
           height Pointer to height.
           cout Output buffer.

       Returns
           0 for success, error code otherwise.

       Author
           Stephen Gilbert

       Definition at line 67 of file dec_png.c.

       References user_read_data().

       Referenced by pngunpack().

   void user_read_data (png_structp png_ptr, png_bytep data, png_uint_32 length)
       Custom read function used so that libpng will read a PNG stream from memory instead of a
       file on disk.

       Parameters
           png_ptr Pointer to PNG.
           data Pointer to data.
           length Length.

       Author
           Stephen Gilbert

       Definition at line 41 of file dec_png.c.

       Referenced by dec_png().

Author

       Generated automatically by Doxygen for NCEPLIBS-g2c from the source code.