[Olena-patches] last-svn-commit-180-g79001a9 Revamp and fix a bug in io::magick::*.

* mln/io/magick/load.hh: Revamp. * mln/io/magick/save.hh: Fix a bug while saving. RGB values must be between 0 and 1. * tests/io/magick/save.cc: Remove useless output. --- milena/ChangeLog | 11 +++++++++++ milena/mln/io/magick/load.hh | 32 ++++++++++++++++++++------------ milena/mln/io/magick/save.hh | 33 ++++++++++++++++++--------------- milena/tests/io/magick/save.cc | 9 ++++----- 4 files changed, 53 insertions(+), 32 deletions(-) diff --git a/milena/ChangeLog b/milena/ChangeLog index 62075e5..c7da59f 100644 --- a/milena/ChangeLog +++ b/milena/ChangeLog @@ -1,3 +1,14 @@ +2010-06-28 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; + + Revamp and fix a bug in io::magick::*. + + * mln/io/magick/load.hh: Revamp. + + * mln/io/magick/save.hh: Fix a bug while saving. RGB values must + be between 0 and 1. + + * tests/io/magick/save.cc: Remove useless output. + 2010-06-25 Guillaume Lazzara &lt;z(a)lrde.epita.fr&gt; Add new tests. diff --git a/milena/mln/io/magick/load.hh b/milena/mln/io/magick/load.hh index dfe9197..625134f 100644 --- a/milena/mln/io/magick/load.hh +++ b/milena/mln/io/magick/load.hh @@ -116,20 +116,22 @@ namespace mln I& ima = exact(ima_); - //std::ifstream file(filename.c_str()); - //if (! file) - //{ - // std::cerr << "error: cannot open file '" << filename << "'!"; - // abort(); - //} - Magick::Image im_file; im_file.ping(filename); +// if (im_file) +// { +// std::cerr << "error: cannot open file '" << filename << "'!"; +// abort(); +// } + // Force a minimum resolution of 300DPI for PDF document. if (im_file.magick() == "PDF" - && (im_file.xResolution() < 300 || im_file.yResolution() < 300)) + && (im_file.xResolution() < 300 + || im_file.yResolution() < 300)) + { im_file.density(Magick::Geometry(300, 300)); + } im_file.read(filename); @@ -144,7 +146,8 @@ namespace mln std::cout << "format: " <<im_file.format() << std::endl; std::cout << "magick: " <<im_file.magick() << std::endl;*/ - const Magick::PixelPacket *pixel_cache = im_file.getConstPixels(0, 0, columns, rows); + const Magick::PixelPacket * + pixel_cache = im_file.getConstPixels(0, 0, columns, rows); algebra::vec<mln_site_(I)::dim, unsigned int> vmin; algebra::vec<mln_site_(I)::dim, unsigned int> vmax; @@ -159,10 +162,15 @@ namespace mln mln_piter(I) p(ima.domain()); for_all(p) { - const Magick::PixelPacket *pixel = pixel_cache + (int) p.to_site().to_vec()[0] * columns - + (int) p.to_site().to_vec()[1]; + const Magick::PixelPacket * + pixel = pixel_cache + + (int) p.to_site().to_vec()[0] * columns + + (int) p.to_site().to_vec()[1]; + // FIXME: Quantum = 16bits but rgb is 8bits - value::rgb8 pix(pixel->red % 256, pixel->green % 256, pixel->blue % 256); + value::rgb8 pix(pixel->red % 256, + pixel->green % 256, + pixel->blue % 256); mln_value(I) res; if (!do_it(pix, res, filename)) abort(); diff --git a/milena/mln/io/magick/save.hh b/milena/mln/io/magick/save.hh index bd09224..72613c2 100644 --- a/milena/mln/io/magick/save.hh +++ b/milena/mln/io/magick/save.hh @@ -78,26 +78,29 @@ namespace mln return Magick::ColorMono(value); } + // Gray values must be between 0 and 1. inline Magick::Color get_color(const value::int_u8& value) { - return Magick::ColorGray(256 - value); + return Magick::ColorGray(value / 255.0f); } + // Color values must be between 0 and 1. inline Magick::Color get_color(const value::rgb8& value) { - return Magick::ColorRGB(256 - value.red(), - 256 - value.green(), - 256 - value.blue()); + return Magick::ColorRGB(value.red() / 255.0f, + value.green() / 255.0f, + value.blue() / 255.0f); } + // Color values must be between 0 and 1. inline Magick::Color get_color(const value::qt::rgb32& value) { - return Magick::ColorRGB(256 - value.red(), - 256 - value.green(), - 256 - value.blue()); + return Magick::ColorRGB(value.red() / 255.0f, + value.green() / 255.0f, + value.blue() / 255.0f); } template <typename I> @@ -119,20 +122,20 @@ namespace mln } Magick::Image im_file; - im_file.size(Magick::Geometry(ima.nrows(), ima.ncols())); + im_file.size(Magick::Geometry(ima.ncols(), ima.nrows())); - Magick::PixelPacket* pixel_cache = im_file.getPixels(0, 0, ima.nrows(), ima.ncols()); - Magick::PixelPacket* pixel; + im_file.modifyImage(); + + Magick::PixelPacket * + pp = im_file.getPixels(0,0, ima.ncols(), ima.nrows()); mln_site(I) pmin = ima.domain().pmin(); mln_piter(I) p(ima.domain()); for_all(p) - { - pixel = pixel_cache + (int) (p.to_site().to_vec()[0] - pmin.to_vec()[0]) * ima.ncols() - + (int) (p.to_site().to_vec()[1] - pmin.to_vec()[1]); - *pixel = get_color(ima(p)); - } + *pp++ = get_color(ima(p)); + im_file.syncPixels(); + im_file.write(filename); trace::exiting("mln::io::magick::save"); diff --git a/milena/tests/io/magick/save.cc b/milena/tests/io/magick/save.cc index 666e953..9af3e22 100644 --- a/milena/tests/io/magick/save.cc +++ b/milena/tests/io/magick/save.cc @@ -1,4 +1,5 @@ -// Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE) +// Copyright (C) 2009, 2010 EPITA Research and Development Laboratory +// (LRDE) // // This file is part of Olena. // @@ -27,12 +28,10 @@ #include <mln/io/magick/load.hh> #include <mln/io/magick/save.hh> #include <mln/io/ppm/load.hh> -#include <mln/io/ppm/save.hh> #include <mln/data/compare.hh> #include "tests/data.hh" #include <mln/io/magick/load.hh> - int main() { @@ -48,9 +47,9 @@ int main() image2d<value::rgb8> lena_im; io::magick::load(lena_im, "tiny.png"); - mln_assertion(lena_im(p) == c); - io::ppm::save(lena_im, "tiny.ppm"); + + mln_assertion(lena_im(p) == c); mln_assertion(lena_im.domain() == lena_mln.domain()); mln_assertion(lena_im == lena_mln); -- 1.5.6.5