You don't have to dig into the C++ code. Since LilyPond is so flexible, you can easily redefine the way the different context types are mapped into MIDI tracks. See http://mail.gnu.org/archive/html/lilypond-user/2003-01/msg00088.html (which really addresses the opposite problem).
/Mats
[EMAIL PROTECTED] wrote:
Hi everybody!
I've typeset the beggining of the 1st mvt of the 2nd Rachmaninov piano concerto. I'd like to listen to it with a midi player, but there are some problems with the instrumentation... Acutually there are more than 16 tracks. The problem is that the midi output sets one channel per track so it can't put more than 16 tracks even if some of them could use the same channel :((. I don't know if it's very clear...
I look to the C++ code, an I'm guessing the problem comes from here: // from lily/performance.cc
void Performance::output (Midi_stream& midi_stream) { int tracks_i = audio_staffs_.size () + 1;
// ugh int clocks_per_4_i = 384;
midi_stream << Midi_header (1, tracks_i, clocks_per_4_i); output_header_track (midi_stream); progress_indication ("\n"); progress_indication (_ ("Track ... ")); int channel = 0; for (int i =0; i < audio_staffs_.size (); i++) { Audio_staff *s = audio_staffs_[i]; if (verbose_global_b) progress_indication ("[" + to_string (i)) ;
/* MIDI players tend to ignore instrument settings on channel 10, the percussion channel by default. */ if (channel == 9) channel++; if (s->channel_ < 0) s->channel_ = channel; s->output (midi_stream, channel++); // oooops!! if (verbose_global_b) progress_indication ("]"); } }
I send the source if you want to test it... I'm using lilypond 1.7.27
Thanks in advance for your help!
PS: you have to run lilypond on the ts-score.ly file
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-- ============================================= Mats Bengtsson Signal Processing Signals, Sensors and Systems Royal Institute of Technology SE-100 44 STOCKHOLM Sweden Phone: (+46) 8 790 8463 Fax: (+46) 8 790 7260 Email: [EMAIL PROTECTED] WWW: http://www.s3.kth.se/~mabe =============================================
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