PNG_IO
Read and Write PNG Graphics Files

PNG_IO is a C library which reads and writes files in the Portable Network Graphics (PNG) format.

Languages:

PNG_IO is available in a C version.

Related Data and Programs:

PBMA_IO, a C library which handles the ASCII PBM (Portable Bit Map) format.

PBMB_IO, a C library which handles the binary PBM (Portable Bit Map) format.

PGMA_IO, a C library which handles the ASCII PGM (Portable Gray Map) format.

PGMB_IO, a C library which handles the binary PGM (Portable Gray Map) format.

PPMA_IO, a C library which can read or write ASCII PPM (Portable Pixel Map) graphics files.

PPMB_IO, a C library which can read or write binary PPM (Portable Pixel Map) graphics files.

1. Greg Roelofs,
   PNG: The Definitive Guide,
   ISBN: 1-56592-542-4.
2. The PNG website,
   http://www.libpng.org/pub/png/

Source Code:

• png_io.c, the source code.
• png_io.h, the include file.

Examples and Tests:

• png_io_test.c a sample calling program.
• png_io_test.txt, the output file.
• png_41.png, a gray scale image created by the program.
• png_43.png, an RGB image created by the program.

You can go up one level to the C source codes.