X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmidi-item.cc;h=4909217c4319c108cca8aba6b22ea9533e5c9b37;hb=0b544cfb7332615ef809b71b57ab656741311ae1;hp=3fcdb4ca223d6c7ebea4a3b6e983cfc6cab6001d;hpb=d548c339bc07e4a707c1092507afe2d672e0457d;p=lilypond.git diff --git a/lily/midi-item.cc b/lily/midi-item.cc index 3fcdb4ca22..4909217c43 100644 --- a/lily/midi-item.cc +++ b/lily/midi-item.cc @@ -1,15 +1,27 @@ /* - 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--2014 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" #include "duration.hh" #include "international.hh" +#include "libc-extension.hh" #include "main.hh" #include "midi-stream.hh" #include "misc.hh" @@ -17,10 +29,8 @@ #include "string-convert.hh" #include "warn.hh" -#define PITCH_WHEEL_TOP 0x3FFF #define PITCH_WHEEL_CENTER 0x2000 -#define PITCH_WHEEL_BOTTOM 0x0000 -#define PITCH_WHEEL_RANGE (PITCH_WHEEL_TOP - PITCH_WHEEL_BOTTOM) +#define PITCH_WHEEL_SEMITONE 0X1000 Midi_item * Midi_item::get_midi (Audio_item *a) @@ -40,45 +50,16 @@ 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 if (Audio_control_function_value_change *i + = dynamic_cast (a)) + return new Midi_control_function_value_change (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) { seconds_ = seconds_f; @@ -90,47 +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 = rat_dt.to_int (); - - string delta_string = Midi_item::i2varint_string (delta); - string midi_string = midi_->to_string (); - assert (midi_string.length ()); - return delta_string + midi_string; -} - -Midi_header::Midi_header (int format, int tracks, int clocks_per_4) -{ - string str; - - string format_string = String_convert::int2hex (format, 4, '0'); - str += String_convert::hex2bin (format_string); - - string tracks_string = String_convert::int2hex (tracks, 4, '0'); - str += String_convert::hex2bin (tracks_string); - - string tempo_string = String_convert::int2hex (clocks_per_4, 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_); } @@ -140,14 +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 ())); @@ -160,22 +101,31 @@ Midi_item::Midi_item () { } -Midi_channel_item::~Midi_channel_item () +Midi_channel_item::Midi_channel_item (Audio_item *ai) + : channel_ (ai->channel_) { - channel_ = 0; } -Midi_channel_item::Midi_channel_item () +Midi_control_function_value_change +::Midi_control_function_value_change (Audio_control_function_value_change *ai) + : Midi_channel_item (ai), control_ (ai->control_), value_ (ai->value_) { - channel_ = 0; } Midi_item::~Midi_item () { } +Midi_channel_item::~Midi_channel_item () +{ +} + +Midi_control_function_value_change::~Midi_control_function_value_change () +{ +} + string -Midi_item::i2varint_string (int i) +int2midi_varint_string (int i) { int buffer = i & 0x7f; while ((i >>= 7) > 0) @@ -190,16 +140,16 @@ Midi_item::i2varint_string (int i) { str += ::to_string ((char)buffer); if (buffer & 0x80) - buffer >>= 8; + buffer >>= 8; else - break; + break; } return str; } Midi_key::Midi_key (Audio_key *a) + : audio_ (a) { - audio_ = a; } string @@ -215,9 +165,9 @@ 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 @@ -226,14 +176,12 @@ Midi_time_signature::to_string () const int num = abs (audio_->beats_); if (num > 255) { - warning ("Time signature with more than 255 beats. Truncating"); + warning (_ ("Time signature with more than 255 beats. Truncating")); num = 255; } int den = audio_->one_beat_; - - string str = "ff5804"; str += String_convert::int2hex (num, 2, '0'); str += String_convert::int2hex (intlog2 (den), 2, '0'); @@ -243,34 +191,32 @@ Midi_time_signature::to_string () const } Midi_note::Midi_note (Audio_note *a) + : Midi_channel_item (a), + audio_ (a), + dynamic_byte_ (min (max (Byte ((a->dynamic_ && a->dynamic_->volume_ >= 0 + ? a->dynamic_->volume_ * 0x7f : 0x5a) + + a->extra_velocity_), + Byte (0)), Byte (0x7f))) { - 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 { Rational tune = (audio_->pitch_.tone_pitch () - + audio_->transposing_.tone_pitch ()) * Rational (2); + + audio_->transposing_.tone_pitch ()) * Rational (2); tune -= Rational (get_semitone_pitch ()); - tune *= 100; + tune *= PITCH_WHEEL_SEMITONE; return (int) double (tune); } int Midi_note::get_semitone_pitch () const { - return int (double ((audio_->pitch_.tone_pitch () - + audio_->transposing_.tone_pitch ()) * Rational (2))); + double tune = double ((audio_->pitch_.tone_pitch () + + audio_->transposing_.tone_pitch ()) * Rational (2)); + return int (rint (tune)); } string @@ -283,13 +229,7 @@ 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. - finetune += (PITCH_WHEEL_RANGE *get_fine_tuning ()) / (4 * 100); + finetune = PITCH_WHEEL_CENTER + get_fine_tuning (); str += ::to_string ((char) (0xE0 + channel_)); str += ::to_string ((char) (finetune & 0x7F)); @@ -297,9 +237,9 @@ Midi_note::to_string () const str += ::to_string ((char) (0x00)); } - str += ::to_string ((char)status_byte); + str += ::to_string ((char) status_byte); str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_)); - str += ::to_string ((char)dynamic_byte_); + str += ::to_string ((char) dynamic_byte_); return str; } @@ -310,17 +250,14 @@ 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_semitone_pitch () + Midi_note::c0_pitch_)); @@ -331,7 +268,7 @@ Midi_note_off::to_string () const // Move pitch wheel back to the central position. str += ::to_string ((char) 0x00); str += ::to_string ((char) (0xE0 + channel_)); - str += ::to_string ((char) (PITCH_WHEEL_CENTER &0x7F)); + str += ::to_string ((char) (PITCH_WHEEL_CENTER & 0x7F)); str += ::to_string ((char) (PITCH_WHEEL_CENTER >> 7)); } @@ -339,8 +276,9 @@ Midi_note_off::to_string () const } Midi_dynamic::Midi_dynamic (Audio_dynamic *a) + : Midi_channel_item (a), + audio_ (a) { - audio_ = a; } string @@ -362,14 +300,19 @@ Midi_dynamic::to_string () const if (volume > full_scale) volume = (int)full_scale; + int const volume_default = 100; + if (audio_->volume_ < 0 || audio_->silent_) + volume = volume_default; + str += ::to_string ((char)0x07); str += ::to_string ((char)volume); return str; } Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a) + : Midi_channel_item (a), + audio_ (a) { - audio_ = a; } string @@ -391,8 +334,8 @@ Midi_piano_pedal::to_string () const } Midi_tempo::Midi_tempo (Audio_tempo *a) + : audio_ (a) { - audio_ = a; } string @@ -405,8 +348,8 @@ Midi_tempo::to_string () const } Midi_text::Midi_text (Audio_text *a) + : audio_ (a) { - audio_ = a; } string @@ -414,84 +357,73 @@ 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"; +Midi_control_function_value_change::to_string () const +{ + // MIDI control function information. A MIDI control function may have one + // or two assigned control numbers depending on whether it supports coarse + // (7-bit) or fine (14-bit) resolution. If the control function supports + // fine resolution, the first (respectively, second) member of the structure + // represents the control number for setting the most (least) significant 7 + // bits of the control function's value. + struct Control_function + { + int msb_control_number_; + int lsb_control_number_; + }; + + // Mapping from supported control functions (enumeration values defined in + // Audio_controller_value_change::Control) to the corresponding MIDI control + // numbers. + static const Control_function control_functions[] = + { + // When adding support for new control functions, please note the + // following: + // - The order of the control number definitions should be kept + // consistent with the order of the enumeration values defined in + // Audio_control_function_value_change::Control. + // - If the control function has only coarse resolution, the function's + // control number should be stored in the MSB member of the array + // element, and the LSB member should be set to a negative value. + + { 8, 40 }, // balance + { 10, 42 }, // pan position + { 91, -1 }, // reverb level (only coarse resolution available) + { 93, -1 } // chorus level (only coarse resolution available) + }; - for (vector::const_iterator i (events_.begin()); - i != events_.end(); i ++) + string str; + const Control_function *control_function = &control_functions[control_]; + static const Real full_fine_scale = 0x3FFF; + static const Real full_coarse_scale = 0x7F; + bool fine_resolution = (control_function->lsb_control_number_ >= 0); + // value_ is in range [0.0 .. 1.0]. For directional value ranges, + // #CENTER will correspond to 0.5 exactly, and my_round rounds + // upwards when in case of doubt. That means that center position + // will round to 0x40 or 0x2000 by a hair's breadth. + int value = (int) my_round (value_ * (fine_resolution ? + full_fine_scale : full_coarse_scale)); + Byte status_byte = (char) (0xB0 + channel_); + str += ::to_string ((char)status_byte); + str += ::to_string ((char)(control_function->msb_control_number_)); + str += ::to_string ((char)(fine_resolution ? (value >> 7) : value)); + if (fine_resolution) { - str += (*i)->to_string (); - if (do_midi_debugging_global) - str += "\n"; + str += ::to_string ((char)0x00); + str += ::to_string ((char)status_byte); + str += ::to_string ((char)(control_function->lsb_control_number_)); + str += ::to_string ((char)(value & 0x7F)); } return str; } - char const * Midi_item::name () const { - return this->class_name (); -} - -Midi_track::~Midi_track () -{ - junk_pointers (events_); + return this->class_name (); }