Type: Package
Package: fastpng
Title: Read and Write PNG Files with Configurable Decoder/Encoder
        Options
Version: 0.1.9
Authors@R: c(
    person("Mike", "Cheng", , "mikefc@coolbutuseless.com", role = c("aut", "cre", "cph")),
    person("Randy408", , , "randy408@protonmail.com", role = c("aut", "cph"),
           comment = "Author of bundled libspng"),
    person("The PNG Reference Library Authors", role = c('aut', 'cph')),
    person("Cosmin", "Truta", role = 'cph', comment = 
           "SSE2 optimised filter functions, NEON optimised filter functions, NEON optimised palette expansion functions"),
    person("Glenn", "Randers-Pehrson", role = 'cph', comment = 
           "SSE2 optimised filter functions"),
    person("Andreas", "Dilger", role = 'cph'),
    person("Guy Eric", "Schalnat", role = 'cph'),
    person("Mike", "Klein", role = "ctb", comment = "SSE2 optimised filter functions"),
    person("Matt", "Sarett", role = "ctb", comment = "SSE2 optimised filter functions"),
    person("James", "Yu", email = "james.yu@linaro.org", role = "ctb", 
           comment = "NEON optimised filter functions"),
    person("Mars", "Rullgard", role = "ctb", comment = "NEON optimised filter functions"),
    person("Arm Holdings", role = "cph", comment = "NEON optimised palette expansion functions"),
    person("Richard", "Townsend", role = c('ctb'), email = "Richard.Townsend@arm.com", 
           comment = "NEON optimised palette expansion functions")
  )
Maintainer: Mike Cheng <mikefc@coolbutuseless.com>
Description: Read and write PNG images with arrays, rasters, native
    rasters, numeric arrays, integer arrays, raw vectors and indexed
    values.  This PNG encoder exposes configurable internal options
    enabling the user to select a speed-size tradeoff.  For example,
    disabling compression can speed up writing PNG by a factor of 50.
    Multiple image formats are supported including raster, native rasters,
    and integer and numeric arrays at color depths of 1, 2, 3 or 4. 16-bit
    images are also supported. This implementation uses the 'libspng' 'C'
    library which is available from
    <https://github.com/randy408/libspng/>.
License: MIT + file LICENSE
URL: https://github.com/coolbutuseless/fastpng
BugReports: https://github.com/coolbutuseless/fastpng/issues
LinkingTo: colorfast
Imports: colorfast (>= 1.0.1)
Depends: R (>= 4.1.0)
Suggests: knitr, png, rmarkdown, testthat (>= 3.0.0)
VignetteBuilder: knitr
Config/testthat/edition: 3
Copyright: The included 'libspng' code is Copyright (c) 2018-2023,
        Randy <randy408@protonmail.com>. Sections within the 'libspng'
        code are derived from 'libpng' and copyright attributed to
        those authors. See 'COPYRIGHTS' for license information and
        full attribution of all copyrighted sections of code.
Encoding: UTF-8
Language: en-AU
LazyData: true
LazyDataCompression: xz
Config/roxygen2/version: 8.0.0
NeedsCompilation: yes
Packaged: 2026-07-18 10:45:46 UTC; mike
Author: Mike Cheng [aut, cre, cph],
  Randy408 [aut, cph] (Author of bundled libspng),
  The PNG Reference Library Authors [aut, cph],
  Cosmin Truta [cph] (SSE2 optimised filter functions, NEON optimised
    filter functions, NEON optimised palette expansion functions),
  Glenn Randers-Pehrson [cph] (SSE2 optimised filter functions),
  Andreas Dilger [cph],
  Guy Eric Schalnat [cph],
  Mike Klein [ctb] (SSE2 optimised filter functions),
  Matt Sarett [ctb] (SSE2 optimised filter functions),
  James Yu [ctb] (NEON optimised filter functions),
  Mars Rullgard [ctb] (NEON optimised filter functions),
  Arm Holdings [cph] (NEON optimised palette expansion functions),
  Richard Townsend [ctb] (NEON optimised palette expansion functions)
Repository: CRAN
Date/Publication: 2026-07-18 11:10:11 UTC
Built: R 4.5.3; x86_64-w64-mingw32; 2026-07-20 19:53:45 UTC; windows
Archs: x64
