/*
- midi-item.cc -- implement Midi items.
+ midi-item.cc -- implement MIDI items.
source file of the GNU LilyPond music typesetter
- (c) 1997--2006 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1997--2007 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#include "midi-item.hh"
else if (Audio_time_signature *i = dynamic_cast<Audio_time_signature *> (a))
return new Midi_time_signature (i);
else if (Audio_text *i = dynamic_cast<Audio_text *> (a))
- //return i->text_string_.length () ? new Midi_text (i) : 0;
return new Midi_text (i);
else
assert (0);
- // isn't C++ grand?
return 0;
}
return string ("<duration: ") + ::to_string (seconds_) + ">";
}
-Midi_event::Midi_event (Moment delta_mom, Midi_item *midi)
+Midi_event::Midi_event (int delta_ticks, Midi_item *midi)
{
- delta_mom_ = delta_mom;
+ delta_ticks_ = delta_ticks;
midi_ = midi;
}
-/*
- ugh. midi output badly broken since grace note hackage.
-*/
string
Midi_event::to_string () const
{
- Rational rat_dt = (delta_mom_.main_part_ * Rational (384)
- + delta_mom_.grace_part_ * Rational (100)) * Rational (4);
- int delta_i = rat_dt.to_int ();
-
- string delta_string = Midi_item::i2varint_string (delta_i);
+ string delta_string = Midi_item::i2varint_string (delta_ticks_);
string midi_string = midi_->to_string ();
assert (midi_string.length ());
return delta_string + midi_string;
}
-Midi_header::Midi_header (int format_i, int tracks_i, int clocks_per_4_i)
+Midi_header::Midi_header (int format, int tracks, int clocks_per_4)
{
string str;
- string format_string = String_convert::int2hex (format_i, 4, '0');
+ string format_string = String_convert::int2hex (format, 4, '0');
str += String_convert::hex2bin (format_string);
- string tracks_string = String_convert::int2hex (tracks_i, 4, '0');
+ string tracks_string = String_convert::int2hex (tracks, 4, '0');
str += String_convert::hex2bin (tracks_string);
- string tempo_string = String_convert::int2hex (clocks_per_4_i, 4, '0');
+ string tempo_string = String_convert::int2hex (clocks_per_4, 4, '0');
str += String_convert::hex2bin (tempo_string);
set ("MThd", str, "");
Byte program_byte = 0;
bool found = false;
- /*
- UGH. don't use eval.
- */
SCM proc = ly_lily_module_constant ("midi-program");
SCM program = scm_call_1 (proc, ly_symbol2scm (audio_->str_.c_str ()));
found = (program != SCM_BOOL_F);
}
Midi_item::Midi_item ()
+{
+}
+
+Midi_channel_item::Midi_channel_item ()
{
channel_ = 0;
}
string
Midi_item::i2varint_string (int i)
{
- int buffer_i = i & 0x7f;
+ int buffer = i & 0x7f;
while ((i >>= 7) > 0)
{
- buffer_i <<= 8;
- buffer_i |= 0x80;
- buffer_i += (i & 0x7f);
+ buffer <<= 8;
+ buffer |= 0x80;
+ buffer += (i & 0x7f);
}
string str;
while (1)
{
- str += ::to_string ((char)buffer_i);
- if (buffer_i & 0x80)
- buffer_i >>= 8;
+ str += ::to_string ((char)buffer);
+ if (buffer & 0x80)
+ buffer >>= 8;
else
break;
}
dynamic_byte_ = 0x7f;
}
-Moment
-Midi_note::get_length () const
-{
- Moment m = audio_->length_mom_;
- return m;
-}
int
Midi_note::get_fine_tuning () const
{
- int ft = audio_->pitch_.quartertone_pitch ();
- ft -= 2 * audio_->pitch_.semitone_pitch ();
- ft *= 50; // 1 quarter tone = 50 cents
- return ft;
+ Rational tune = (audio_->pitch_.tone_pitch ()
+ + audio_->transposing_.tone_pitch ()) * Rational (2);
+ tune -= Rational (get_semitone_pitch ());
+
+ tune *= 100;
+ return (int) double (tune);
}
int
-Midi_note::get_pitch () const
+Midi_note::get_semitone_pitch () const
{
- int p = audio_->pitch_.semitone_pitch () + audio_->transposing_;
- if (p == INT_MAX)
- {
- warning (_ ("silly pitch"));
- p = 0;
- }
- return p;
+ return int (double ((audio_->pitch_.tone_pitch ()
+ + audio_->transposing_.tone_pitch ()) * Rational (2)));
}
string
str += ::to_string ((char) (0x00));
}
- str += ::to_string ((char)status_byte);
- str += ::to_string ((char) (get_pitch () + c0_pitch_i_));
+ str += ::to_string ((char) status_byte);
+ str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_));
str += ::to_string ((char)dynamic_byte_);
return str;
Byte status_byte = (char) (0x80 + channel_);
string str = ::to_string ((char)status_byte);
- str += ::to_string ((char) (get_pitch () + Midi_note::c0_pitch_i_));
+ str += ::to_string ((char) (get_semitone_pitch () + Midi_note::c0_pitch_));
str += ::to_string ((char)aftertouch_byte_);
if (get_fine_tuning () != 0)
string
Midi_tempo::to_string () const
{
- int useconds_per_4_i = 60 * (int)1e6 / audio_->per_minute_4_;
+ int useconds_per_4 = 60 * (int)1e6 / audio_->per_minute_4_;
string str = "ff5103";
- str += String_convert::int2hex (useconds_per_4_i, 6, '0');
+ str += String_convert::int2hex (useconds_per_4, 6, '0');
return String_convert::hex2bin (str);
}
}
void
-Midi_track::add (Moment delta_time_mom, Midi_item *midi)
+Midi_track::add (int delta_ticks, Midi_item *midi)
{
- assert (delta_time_mom >= Moment (0));
+ assert (delta_ticks >= 0);
- Midi_event *e = new Midi_event (delta_time_mom, midi);
+ Midi_event *e = new Midi_event (delta_ticks, midi);
events_.push_back (e);
}
Midi_track::data_string () const
{
string str = Midi_chunk::data_string ();
- if (do_midi_debugging_global)
- str += "\n";
for (vector<Midi_event*>::const_iterator i (events_.begin());
i != events_.end(); i ++)
{
str += (*i)->to_string ();
- if (do_midi_debugging_global)
- str += "\n";
}
return str;
}