.TH "enc_png.c" 3 "Tue May 3 2022" "Version 1.6.4" "NCEPLIBS-g2c" \" -*- nroff -*-
.ad l
.nh
.SH NAME
enc_png.c \- Functions for dealing with PNG\&.  

.SH SYNOPSIS
.br
.PP
\fC#include <stdio\&.h>\fP
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\fC#include <stdlib\&.h>\fP
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\fC#include <string\&.h>\fP
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\fC#include <png\&.h>\fP
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\fC#include 'grib2\&.h'\fP
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.SS "Typedefs"

.in +1c
.ti -1c
.RI "typedef struct png_stream \fBpng_stream\fP"
.br
.RI "Typedef for PNG stream\&. "
.in -1c
.SS "Functions"

.in +1c
.ti -1c
.RI "int \fBenc_png\fP (char *data, \fBg2int\fP width, \fBg2int\fP height, \fBg2int\fP nbits, char *pngbuf)"
.br
.RI "Encode PNG\&. "
.ti -1c
.RI "void \fBuser_flush_data\fP (png_structp png_ptr)"
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.RI "Dummy Custom flush function\&. "
.ti -1c
.RI "void \fBuser_write_data\fP (png_structp png_ptr, png_bytep data, png_uint_32 length)"
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.RI "Custom write function used to that libpng will write to memory location instead of a file on disk\&. "
.in -1c
.SH "Detailed Description"
.PP 
Functions for dealing with PNG\&. 


.PP
\fBAuthor\fP
.RS 4
Stephen Gilbert 
.RE
.PP

.PP
Definition in file \fBenc_png\&.c\fP\&.
.SH "Typedef Documentation"
.PP 
.SS "typedef struct png_stream png_stream"

.PP
Typedef for PNG stream\&. 
.PP
Definition at line 1 of file enc_png\&.c\&.
.SH "Function Documentation"
.PP 
.SS "int enc_png (char * data, \fBg2int\fP width, \fBg2int\fP height, \fBg2int\fP nbits, char * pngbuf)"

.PP
Encode PNG\&. 
.PP
\fBParameters\fP
.RS 4
\fIdata\fP data\&. 
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\fIwidth\fP width\&. 
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\fIheight\fP height\&. 
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\fInbits\fP number of bits\&. 
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\fIpngbuf\fP PNG buffer\&.
.RE
.PP
\fBReturns\fP
.RS 4
PNG length, or negative number for error\&.
.RE
.PP
\fBAuthor\fP
.RS 4
Stephen Gilbert 
.RE
.PP

.PP
Definition at line 81 of file enc_png\&.c\&.
.PP
References user_flush_data(), and user_write_data()\&.
.PP
Referenced by pngpack()\&.
.SS "void user_flush_data (png_structp png_ptr)"

.PP
Dummy Custom flush function\&. 
.PP
\fBParameters\fP
.RS 4
\fIpng_ptr\fP Pointer to PNG struct\&.
.RE
.PP
\fBAuthor\fP
.RS 4
Stephen Gilbert 
.RE
.PP

.PP
Definition at line 61 of file enc_png\&.c\&.
.PP
Referenced by enc_png()\&.
.SS "void user_write_data (png_structp png_ptr, png_bytep data, png_uint_32 length)"

.PP
Custom write function used to that libpng will write to memory location instead of a file on disk\&. 
.PP
\fBParameters\fP
.RS 4
\fIpng_ptr\fP pointer 
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\fIdata\fP data 
.br
\fIlength\fP length
.RE
.PP
\fBAuthor\fP
.RS 4
Stephen Gilbert 
.RE
.PP

.PP
Definition at line 38 of file enc_png\&.c\&.
.PP
Referenced by enc_png()\&.
.SH "Author"
.PP 
Generated automatically by Doxygen for NCEPLIBS-g2c from the source code\&.