2 global-context-scheme.cc -- implement Global_context bindings
4 source file of the GNU LilyPond music typesetter
6 (c) 2005 Han-Wen Nienhuys <hanwen@xs4all.nl>
11 #include "music-output.hh"
12 #include "output-def.hh"
13 #include "music-iterator.hh"
15 #include "cpu-timer.hh"
16 #include "global-context.hh"
17 #include "object-key.hh"
20 LY_DEFINE (ly_format_output, "ly:format-output",
21 2, 0, 0, (SCM context, SCM outname),
22 "Given a Score context in its final state,"
23 "process it and return the (rendered) result.")
25 Global_context *g = dynamic_cast<Global_context*> (unsmob_context (context));
26 SCM_ASSERT_TYPE (g, context, SCM_ARG1, __FUNCTION__, "Global context");
27 SCM_ASSERT_TYPE (scm_is_string (outname), outname, SCM_ARG2, __FUNCTION__, "output file name");
29 Music_output *output = g->get_output ();
30 progress_indication ("\n");
31 /* ugh, midi still wants outname */
32 return output->process (ly_scm2string (outname));
36 LY_DEFINE (ly_run_translator, "ly:run-translator",
37 2, 1, 0, (SCM mus, SCM output_def, SCM key),
38 "Process @var{mus} according to @var{output_def}. \n"
39 "An interpretation context is set up,\n"
40 "and @var{mus} is interpreted with it. \n"
41 "The context is returned in its final state.\n"
43 "\n\nOptionally, this routine takes an Object-key to\n"
44 "to uniquely identify the Score block containing it.\n")
46 Output_def *odef = unsmob_output_def (output_def);
47 Music *music = unsmob_music (mus);
50 || !music->get_length ().to_bool ())
52 warning (_ ("Need music in a score"));
56 SCM_ASSERT_TYPE (music, mus, SCM_ARG1,
57 __FUNCTION__, "Music");
58 SCM_ASSERT_TYPE (odef, output_def, SCM_ARG2, __FUNCTION__,
63 Global_context *trans = new Global_context (odef, music->get_length (), unsmob_key (key) );
66 programming_error ("no toplevel translator");
70 progress_indication (_ ("Interpreting music... "));
72 SCM protected_iter = Music_iterator::get_static_get_iterator (music);
73 Music_iterator * iter = unsmob_iterator (protected_iter);
74 iter->init_translator (music, trans);
76 iter->construct_children ();
80 warning (_ ("Need music in a score"));
81 /* todo: should throw exception. */
85 trans->run_iterator_on_me (iter);
87 scm_remember_upto_here_1 (protected_iter);
90 if (be_verbose_global)
91 progress_indication (_f ("elapsed time: %.2f seconds", timer.read ()));
93 return scm_gc_unprotect_object (trans->self_scm ());