[Olena-patches] cleanup-2008 2862: Specialize accu tranform for fastest images.

https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008/milena Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Specialize accu tranform for fastest images. * mln/accu/snake_2d.hh (todo): New. * mln/accu/transform.hh (transform_fastest): New. (transform_dispatch): New overload. (todo): Remove; obsolete. * mln/canvas/browsing/snake_generic.hh: Upgrade doc style. (include): Remove useless 'stack'. accu/snake_2d.hh | 2 + accu/transform.hh | 77 ++++++++++++++++++++++++++++++++------- canvas/browsing/snake_generic.hh | 12 +++--- 3 files changed, 72 insertions(+), 19 deletions(-) Index: mln/accu/snake_2d.hh --- mln/accu/snake_2d.hh (revision 2861) +++ mln/accu/snake_2d.hh (working copy) @@ -31,6 +31,8 @@ /// \file mln/accu/snake_2d.hh /// /// Run an accumulator in a snake-like browsing. +/// +/// \todo Make it n-D. #include <mln/core/concept/image.hh> #include <mln/core/concept/meta_accumulator.hh> Index: mln/accu/transform.hh --- mln/accu/transform.hh (revision 2861) +++ mln/accu/transform.hh (working copy) @@ -32,8 +32,6 @@ /// /// Transform an image by applying locally an accumulator on its /// values. -/// -/// \todo Specialize for fastest images. # include <mln/core/concept/meta_accumulator.hh> # include <mln/core/concept/image.hh> @@ -67,6 +65,8 @@ namespace impl { + // Generic version. + namespace generic { @@ -79,8 +79,8 @@ trace::entering("accu::impl::generic::transform"); const I& input = exact(input_); - A a = exact(a_); const W& win = exact(win_); + A a = exact(a_); mln_precondition(input.has_data()); // mln_precondition(win.is_valid()); @@ -106,32 +106,85 @@ } // end of namespace mln::accu::impl::generic + + // Fastest version. + + template <typename I, typename A, typename W> + mln_ch_value(I, mln_result(A)) + transform_fastest(const Image<I>& input_, const Accumulator<A>& a_, const Window<W>& win_) + { + trace::entering("accu::impl::transform_fastest"); + + const I& input = exact(input_); + const W& win = exact(win_); + A a = exact(a_); + + mln_precondition(input.has_data()); + // mln_precondition(win.is_valid()); + + extension::adjust(input, win); + + typedef mln_ch_value(I, mln_result(A)) O; + O output; + initialize(output, input); + mln_pixter(O) o(output); + + mln_pixter(const I) p(input); + mln_qixter(const I, W) q(p, win); + for_all_2(p, o) + { + a.init(); + for_all(q) + a.take(q.val()); + o.val() = a.to_result(); + } + + trace::exiting("accu::impl::transform_fastest"); + return output; + } + + } // end of namespace mln::accu::impl + // Dispatch. + namespace internal { template <typename I, typename A, typename W> - inline mln_ch_value(I, mln_result(A)) - transform_dispatch(const Image<I>& input, - const Accumulator<A>& a, - const Window<W>& win) + transform_dispatch(trait::image::speed::any, + const Image<I>& input, const Accumulator<A>& a, const Window<W>& win) { return impl::generic::transform(input, a, win); } + template <typename I, typename A, typename W> + mln_ch_value(I, mln_result(A)) + transform_dispatch(trait::image::speed::fastest, + const Image<I>& input, const Accumulator<A>& a, const Window<W>& win) + { + return impl::transform_fastest(input, a, win); + } + + template <typename I, typename A, typename W> + mln_ch_value(I, mln_result(A)) + transform_dispatch(const Image<I>& input, const Accumulator<A>& a, const Window<W>& win) + { + return transform_dispatch(mln_trait_image_speed(I)(), + input, a, win); + } + } // end of namespace mln::accu::internal + // Facades. template <typename I, typename A, typename W> inline mln_ch_value(I, mln_result(A)) - transform(const Image<I>& input, - const Accumulator<A>& a, - const Window<W>& win) + transform(const Image<I>& input, const Accumulator<A>& a, const Window<W>& win) { trace::entering("accu::transform"); @@ -147,9 +200,7 @@ template <typename I, typename A, typename W> mln_ch_value(I, mln_accu_with(A, mln_value(I))::result) - transform(const Image<I>& input, - const Meta_Accumulator<A>& a, - const Window<W>& win) + transform(const Image<I>& input, const Meta_Accumulator<A>& a, const Window<W>& win) { trace::entering("accu::transform"); Index: mln/canvas/browsing/snake_generic.hh --- mln/canvas/browsing/snake_generic.hh (revision 2861) +++ mln/canvas/browsing/snake_generic.hh (working copy) @@ -1,4 +1,5 @@ -// Copyright (C) 2007 EPITA Research and Development Laboratory +// Copyright (C) 2007, 2008 EPITA Research and Development Laboratory +// (LRDE) // // This file is part of the Olena Library. This library is free // software; you can redistribute it and/or modify it under the terms @@ -28,14 +29,13 @@ #ifndef MLN_CANVAS_BROWSING_SNAKE_GENERIC_HH # define MLN_CANVAS_BROWSING_SNAKE_GENERIC_HH -/*! \file mln/canvas/browsing/snake_generic.hh - * - * \brief Browsing in a snake-way, forward. - */ +/// \file mln/canvas/browsing/snake_generic.hh +/// +/// Browsing in a snake-way, forward. -# include <stack> # include <mln/core/concept/browsing.hh> + namespace mln {