[Olena] 10.34: Fix pgm headers

Le patch de mandor est appliqué. Index: olena/ChangeLog from Nicolas Burrus &lt;burrus_n(a)lrde.epita.fr&gt; * oln/io/pnm_write_2d.hh: Store in the header the maximal value of the encoding, not of the actual image values. * tests/io/tests/headers: New test. * tests/io/Makefile.am: Remove headers.pgm. Index: olena/tests/io/Makefile.am --- olena/tests/io/Makefile.am Tue, 05 Aug 2003 21:39:33 +0200 burrus_n (oln/e/49_Makefile.a 1.23 640) +++ olena/tests/io/Makefile.am Mon, 03 Nov 2003 21:49:33 +0100 burrus_n (oln/e/49_Makefile.a 1.23 640) @@ -6,6 +6,7 @@ CLEANFILES += \ black-test.pbm white-test.pbm \ + headers.pgm \ lena \ lena.ppm lena.pgm lena.pbm \ lena.pppm lena.ppgm lena.ppbm \ Index: olena/oln/io/pnm_write_2d.hh --- olena/oln/io/pnm_write_2d.hh Sat, 27 Sep 2003 18:30:39 +0200 burrus_n (oln/u/44_pnm_write_ 1.4 600) +++ olena/oln/io/pnm_write_2d.hh Mon, 03 Nov 2003 21:55:41 +0100 burrus_n (oln/u/44_pnm_write_ 1.4 600) @@ -129,9 +129,7 @@ pnm2d_info info; info.cols = im.ncols(); info.rows = im.nrows(); - oln::utils::f_minmax<oln_value_type(I)> f; - traverse(f, im); - info.max_val = f.max(); + info.max_val = ntg_max_val(oln_value_type(I)); if (info.max_val > ntg::to_ntg(65535U)) return false; Index: olena/tests/io/tests/headers --- olena/tests/io/tests/headers Mon, 03 Nov 2003 21:56:54 +0100 burrus_n () +++ olena/tests/io/tests/headers Mon, 03 Nov 2003 21:49:33 +0100 burrus_n (oln/v/32_headers 644) @@ -0,0 +1,38 @@ +// -*- c++ -*- + +#include "loadsave.hh" + +#include <fstream> +#include <sstream> + +template <class T> +bool check_type() +{ + image2d<T> ima (5, 5); + io::save(ima, "headers.pgm"); + + // Read the actual maximal value in the header of the written file + std::fstream f ("headers.pgm"); + assert(f); + std::string line; + for (unsigned i = 0; i < 4; ++i) + std::getline(f, line); + f.close(); + + // It should be the same value as ntg_max_val(T) + std::istringstream s (line); + unsigned value; + s >> value; + return value != ntg_max_val(T); +} + +bool +check(void) +{ + bool fail = false; + + fail |= check_type<int_u8>(); + fail |= check_type<int_u16>(); + + return fail; +}