X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmidi-item.cc;h=36234c4a9c1a9b77e8082200caa3f69ae466b547;hb=bea1783a6b70e41c45f85136146cdd7fa773fb8e;hp=a7d3e629d8af69c04c1a548095e2594e5f76a82e;hpb=8347f6f06cd4c56d7a2d2ec482647afaaade1267;p=lilypond.git diff --git a/lily/midi-item.cc b/lily/midi-item.cc index a7d3e629d8..36234c4a9c 100644 --- a/lily/midi-item.cc +++ b/lily/midi-item.cc @@ -1,9 +1,20 @@ /* - midi-item.cc -- implement Midi items. + This file is part of LilyPond, the GNU music typesetter. - source file of the GNU LilyPond music typesetter + Copyright (C) 1997--2011 Jan Nieuwenhuizen - (c) 1997--2006 Jan Nieuwenhuizen + LilyPond is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + LilyPond is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with LilyPond. If not, see . */ #include "midi-item.hh" @@ -17,8 +28,6 @@ #include "string-convert.hh" #include "warn.hh" -#include "killing-cons.tcc" - #define PITCH_WHEEL_TOP 0x3FFF #define PITCH_WHEEL_CENTER 0x2000 #define PITCH_WHEEL_BOTTOM 0x0000 @@ -42,44 +51,14 @@ Midi_item::get_midi (Audio_item *a) else if (Audio_time_signature *i = dynamic_cast (a)) return new Midi_time_signature (i); else if (Audio_text *i = dynamic_cast (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; } -void -Midi_chunk::set (string header_string, string data_string, string footer_string) -{ - data_string_ = data_string; - footer_string_ = footer_string; - header_string_ = header_string; -} -string -Midi_chunk::data_string () const -{ - return data_string_; -} - -string -Midi_chunk::to_string () const -{ - string str = header_string_; - string dat = data_string (); - string length_string = String_convert::int2hex (dat.length () - + footer_string_.length (), 8, '0'); - length_string = String_convert::hex2bin (length_string); - - str += length_string; - str += dat; - str += footer_string_; - - return str; -} Midi_duration::Midi_duration (Real seconds_f) { @@ -92,47 +71,10 @@ Midi_duration::to_string () const return string (""; } -Midi_event::Midi_event (Moment delta_mom, Midi_item *midi) -{ - delta_mom_ = delta_mom; - 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 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) -{ - string str; - - string format_string = String_convert::int2hex (format_i, 4, '0'); - str += String_convert::hex2bin (format_string); - - string tracks_string = String_convert::int2hex (tracks_i, 4, '0'); - str += String_convert::hex2bin (tracks_string); - - string tempo_string = String_convert::int2hex (clocks_per_4_i, 4, '0'); - str += String_convert::hex2bin (tempo_string); - - set ("MThd", str, ""); -} - Midi_instrument::Midi_instrument (Audio_instrument *a) + : Midi_channel_item (a) + , audio_ (a) { - audio_ = a; audio_->str_ = String_convert::to_lower (audio_->str_); } @@ -142,14 +84,11 @@ Midi_instrument::to_string () const 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); if (found) - program_byte = scm_to_int (program); + program_byte = (Byte) scm_to_int (program); else warning (_f ("no such MIDI instrument: `%s'", audio_->str_.c_str ())); @@ -160,7 +99,11 @@ Midi_instrument::to_string () const Midi_item::Midi_item () { - channel_ = 0; +} + +Midi_channel_item::Midi_channel_item (Audio_item *ai) + : channel_ (ai->channel_) +{ } Midi_item::~Midi_item () @@ -168,22 +111,22 @@ Midi_item::~Midi_item () } string -Midi_item::i2varint_string (int i) +int2midi_varint_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; } @@ -191,8 +134,8 @@ Midi_item::i2varint_string (int i) } Midi_key::Midi_key (Audio_key *a) + : audio_ (a) { - audio_ = a; } string @@ -208,9 +151,9 @@ Midi_key::to_string () const } Midi_time_signature::Midi_time_signature (Audio_time_signature *a) + : audio_ (a) + , clocks_per_1_ (18) { - audio_ = a; - clocks_per_1_ = 18; } string @@ -236,37 +179,28 @@ Midi_time_signature::to_string () const } Midi_note::Midi_note (Audio_note *a) + : Midi_channel_item (a) + , audio_ (a) + , dynamic_byte_ (a->volume_ > 0 ? Byte (a->volume_ * 0x7f) : Byte (0x5a)) { - audio_ = a; - 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 @@ -279,9 +213,6 @@ Midi_note::to_string () const // print warning if fine tuning was needed, HJJ if (get_fine_tuning () != 0) { - warning (_f ("experimental: temporarily fine tuning (of %d cents) a channel.", - get_fine_tuning ())); - finetune = PITCH_WHEEL_CENTER; // Move pitch wheel to a shifted position. // The pitch wheel range (of 4 semitones) is multiplied by the cents. @@ -293,9 +224,9 @@ Midi_note::to_string () const str += ::to_string ((char) (0x00)); } - str += ::to_string ((char)status_byte); - str += ::to_string ((char) (get_pitch () + c0_pitch_i_)); - str += ::to_string ((char)dynamic_byte_); + str += ::to_string ((char) status_byte); + str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_)); + str += ::to_string ((char) dynamic_byte_); return str; } @@ -306,20 +237,17 @@ Midi_note_off::Midi_note_off (Midi_note *n) on_ = n; channel_ = n->channel_; - // Anybody who hears any difference, or knows how this works? - // 0 should definitely be avoided, notes stick on some sound cards. - // 64 is supposed to be neutral - - aftertouch_byte_ = 64; + // use note_on with velocity=0 instead of note_off + aftertouch_byte_ = 0; } string Midi_note_off::to_string () const { - Byte status_byte = (char) (0x80 + channel_); + Byte status_byte = (char) (0x90 + 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) @@ -335,8 +263,9 @@ Midi_note_off::to_string () const } Midi_dynamic::Midi_dynamic (Audio_dynamic *a) + : Midi_channel_item (a) + , audio_ (a) { - audio_ = a; } string @@ -364,8 +293,9 @@ Midi_dynamic::to_string () const } Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a) + : Midi_channel_item (a) + , audio_ (a) { - audio_ = a; } string @@ -387,22 +317,22 @@ Midi_piano_pedal::to_string () const } Midi_tempo::Midi_tempo (Audio_tempo *a) + : audio_ (a) { - audio_ = a; } 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); } Midi_text::Midi_text (Audio_text *a) + : audio_ (a) { - audio_ = a; } string @@ -410,84 +340,13 @@ Midi_text::to_string () const { string str = "ff" + String_convert::int2hex (audio_->type_, 2, '0'); str = String_convert::hex2bin (str); - str += i2varint_string (audio_->text_string_.length ()); + str += int2midi_varint_string (audio_->text_string_.length ()); str += audio_->text_string_; return str; } -Midi_track::Midi_track () - : Midi_chunk () -{ - // 4D 54 72 6B MTrk - // 00 00 00 3B chunk length (59) - // 00 FF 58 04 04 02 18 08 time signature - // 00 FF 51 03 07 A1 20 tempo - - // FF 59 02 sf mi Key Signature - // sf = -7: 7 flats - // sf = -1: 1 flat - // sf = 0: key of C - // sf = 1: 1 sharp - // sf = 7: 7 sharps - // mi = 0: major key - // mi = 1: minor key - - number_ = 0; - - char const *data_str0 = "" - // "00" "ff58" "0404" "0218" "08" - // "00" "ff51" "0307" "a120" - // why a key at all, in midi? - // key: C - // "00" "ff59" "02" "00" "00" - // key: F (scsii-menuetto) - // "00" "ff59" "02" "ff" "00" - ; - - string data_string; - // only for format 0 (currently using format 1)? - data_string += String_convert::hex2bin (data_str0); - - char const *footer_str0 = "00" "ff2f" "00"; - string footer_string = String_convert::hex2bin (footer_str0); - - set ("MTrk", data_string, footer_string); -} - -void -Midi_track::add (Moment delta_time_mom, Midi_item *midi) -{ - assert (delta_time_mom >= Moment (0)); - - Midi_event *e = new Midi_event (delta_time_mom, midi); - events_.push_back (e); -} - -string -Midi_track::data_string () const -{ - string str = Midi_chunk::data_string (); - if (do_midi_debugging_global) - str += "\n"; - - for (vector::const_iterator i (events_.begin()); - i != events_.end(); i ++) - { - str += (*i)->to_string (); - if (do_midi_debugging_global) - str += "\n"; - } - return str; -} - - char const * Midi_item::name () const { return this->class_name (); } - -Midi_track::~Midi_track () -{ - junk_pointers (events_); -}