Zakariyya Mughal

NAME

Image::Leptonica::Func::jp2kio

VERSION

version 0.04

jp2kio.c

  jp2kio.c

      Read header
          l_int32          readHeaderJp2k()
          l_int32          freadHeaderJp2k()
          l_int32          sreadHeaderJp2k()

FUNCTIONS

freadHeaderJp2k

l_int32 freadHeaderJp2k ( FILE *fp, l_int32 *pw, l_int32 *ph, l_int32 *pspp )

  freadHeaderJp2k()

      Input:  stream opened for read
              &w (<optional return>)
              &h (<optional return>)
              &spp (<optional return>, samples/pixel)
      Return: 0 if OK, 1 on error

readHeaderJp2k

l_int32 readHeaderJp2k ( const char *filename, l_int32 *pw, l_int32 *ph, l_int32 *pspp )

  readHeaderJp2k()

      Input:  filename
              &w (<optional return>)
              &h (<optional return>)
              &spp (<optional return>, samples/pixel)
      Return: 0 if OK, 1 on error

sreadHeaderJp2k

l_int32 sreadHeaderJp2k ( const l_uint8 *data, size_t size, l_int32 *pw, l_int32 *ph, l_int32 *pspp )

  sreadHeaderJp2k()

      Input:  data
              size
              &w (<optional return>)
              &h (<optional return>)
              &spp (<optional return>, samples/pixel)
      Return: 0 if OK, 1 on error

  Notes:
      (1) The metadata is stored as follows:
          h:    4 bytes @ 48
          w:    4 bytes @ 52
          spp:  2 bytes @ 56

AUTHOR

Zakariyya Mughal <zmughal@cpan.org>

COPYRIGHT AND LICENSE

This software is copyright (c) 2014 by Zakariyya Mughal.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.