X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fmidi-item.cc;h=7f8edb041cec4d2fc5d6425efd5ca111c52c95ef;hb=47db9a3883d726ca53e2133a3b2298f78dd6a32e;hp=d520eac8fb06c38e70da49936a1337efd72772af;hpb=bdabe71a2bdda41b64c0000da6023771701f4def;p=lilypond.git diff --git a/lily/midi-item.cc b/lily/midi-item.cc index d520eac8fb..b19527f5bf 100644 --- a/lily/midi-item.cc +++ b/lily/midi-item.cc @@ -1,485 +1,430 @@ /* - 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--2015 Jan Nieuwenhuizen - (c) 1997 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 "proto.hh" -#include "plist.hh" -#include "debug.hh" -#include "misc.hh" -#include "string.hh" -#include "string-convert.hh" -#include "command-request.hh" -#include "musical-request.hh" #include "midi-item.hh" + +#include "duration.hh" +#include "international.hh" +#include "libc-extension.hh" +#include "main.hh" #include "midi-stream.hh" -#include "audio-item.hh" +#include "misc.hh" +#include "program-option.hh" +#include "string-convert.hh" +#include "warn.hh" + +#define PITCH_WHEEL_CENTER 0x2000 +#define PITCH_WHEEL_SEMITONE 0X1000 -Midi_chunk::Midi_chunk() - : Midi_item( 0 ) +Midi_item * +Midi_item::get_midi (Audio_item *a) { + if (Audio_key *i = dynamic_cast (a)) + return new Midi_key (i); + else if (Audio_instrument *i = dynamic_cast (a)) + return i->str_.length () ? new Midi_instrument (i) : 0; + else if (Audio_note *i = dynamic_cast (a)) + return new Midi_note (i); + else if (Audio_dynamic *i = dynamic_cast (a)) + return new Midi_dynamic (i); + else if (Audio_piano_pedal *i = dynamic_cast (a)) + return new Midi_piano_pedal (i); + else if (Audio_tempo *i = dynamic_cast (a)) + return new Midi_tempo (i); + else if (Audio_time_signature *i = dynamic_cast (a)) + return new Midi_time_signature (i); + else if (Audio_text *i = dynamic_cast (a)) + 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); + + return 0; } -void -Midi_chunk::add( String str ) +Midi_duration::Midi_duration (Real seconds_f) { - data_str_ += str; + seconds_ = seconds_f; } -void -Midi_chunk::set( String header_str, String data_str, String footer_str ) +string +Midi_duration::to_string () const { - data_str_ = data_str; - footer_str_ = footer_str; - header_str_ = header_str; + return string (""; } - -String -Midi_chunk::str() const -{ - String str = header_str_; - String length_str = String_convert::i2hex_str( data_str_.length_i() + footer_str_.length_i(), 8, '0' ); - length_str = String_convert::hex2bin_str( length_str ); - str += length_str; - str += data_str_; - str += footer_str_; - return str; -} - -Midi_duration::Midi_duration( Real seconds_f ) - : Midi_item( 0 ) -{ - seconds_f_ = seconds_f; -} - -String -Midi_duration::str() const -{ - return String( ""; -} - -Midi_header::Midi_header( int format_i, int tracks_i, int clocks_per_4_i ) - : Midi_chunk() -{ - String str; - - String format_str = String_convert::i2hex_str( format_i, 4, '0' ); - str += String_convert::hex2bin_str( format_str ); - - String tracks_str = String_convert::i2hex_str( tracks_i, 4, '0' ); - str += String_convert::hex2bin_str( tracks_str ); - - String tempo_str = String_convert::i2hex_str( clocks_per_4_i, 4, '0' ); - str += String_convert::hex2bin_str( tempo_str ); - - set( "MThd", str, "" ); -} - -char const* const instrument_name_sz_a_[ ] = { - - /* default is usually piano */ - /* 0 */ "piano", - - /* (1-8 piano) */ - /* 1 */ "acoustic grand", - /* 2 */ "bright acoustic", - /* 3 */ "electric grand", - /* 4 */ "honky-tonk", - /* 5 */ "electric piano 1", - /* 6 */ "electric piano 2", - /* 7 */ "harpsichord", - /* 8 */ "clav", - - /* (9-16 chrom percussion) */ - /* 9 */ "celesta", - /* 10 */ "glockenspiel", - /* 11 */ "music box", - /* 12 */ "vibraphone", - /* 13 */ "marimba", - /* 14 */ "xylophone", - /* 15 */ "tubular bells", - /* 16 */ "dulcimer", - - /* (17-24 organ) */ - /* 17 */ "drawbar organ", - /* 18 */ "percussive organ", - /* 19 */ "rock organ", - /* 20 */ "church organ", - /* 21 */ "reed organ", - /* 22 */ "accoridan", - /* 23 */ "harmonica", - /* 24 */ "tango accordian", - - /* (25-32 guitar) */ - /* 25 */ "acoustic guitar(nylon)", - /* 26 */ "acoustic guitar(steel)", - /* 27 */ "electric guitar(jazz)", - /* 28 */ "electric guitar(clean)", - /* 29 */ "electric guitar(muted)", - /* 30 */ "overdriven guitar", - /* 31 */ "distortion guitar", - /* 32 */ "guitar harmonics", - - /* (33-40 bass) */ - /* 33 */ "acoustic bass", - /* 34 */ "electric bass(finger)", - /* 35 */ "electric bass(pick)", - /* 36 */ "fretless bass", - /* 37 */ "slap bass 1", - /* 38 */ "slap bass 2", - /* 39 */ "synth bass 1", - /* 40 */ "synth bass 2", - - /* (41-48 strings) */ - /* 41 */ "violin", - /* 42 */ "viola", - /* 43 */ "cello", - /* 44 */ "contrabass", - /* 45 */ "tremolo strings", - /* 46 */ "pizzicato strings", - /* 47 */ "orchestral strings", - /* 48 */ "timpani", - - /* (49-56 ensemble) */ - /* 49 */ "string ensemble 1", - /* 50 */ "string ensemble 2", - /* 51 */ "synthstrings 1", - /* 52 */ "synthstrings 2", - /* 53 */ "choir aahs", - /* 54 */ "voice oohs", - /* 55 */ "synth voice", - /* 56 */ "orchestra hit", - - /* (57-64 brass) */ - /* 57 */ "trumpet", - /* 58 */ "trombone", - /* 59 */ "tuba", - /* 60 */ "muted trumpet", - /* 61 */ "french horn", - /* 62 */ "brass section", - /* 63 */ "synthbrass 1", - /* 64 */ "synthbrass 2", - - /* (65-72 reed) */ - /* 65 */ "soprano sax", - /* 66 */ "alto sax", - /* 67 */ "tenor sax", - /* 68 */ "baritone sax", - /* 69 */ "oboe", - /* 70 */ "english horn", - /* 71 */ "bassoon", - /* 72 */ "clarinet", - - /* (73-80 pipe) */ - /* 73 */ "piccolo", - /* 74 */ "flute", - /* 75 */ "recorder", - /* 76 */ "pan flute", - /* 77 */ "blown bottle", - /* 78 */ "skakuhachi", - /* 79 */ "whistle", - /* 80 */ "ocarina", - - /* (81-88 synth lead) */ - /* 81 */ "lead 1 (square)", - /* 82 */ "lead 2 (sawtooth)", - /* 83 */ "lead 3 (calliope)", - /* 84 */ "lead 4 (chiff)", - /* 85 */ "lead 5 (charang)", - /* 86 */ "lead 6 (voice)", - /* 87 */ "lead 7 (fifths)", - /* 88 */ "lead 8 (bass+lead)", - - /* (89-96 synth pad) */ - /* 89 */ "pad 1 (new age)", - /* 90 */ "pad 2 (warm)", - /* 91 */ "pad 3 (polysynth)", - /* 92 */ "pad 4 (choir)", - /* 93 */ "pad 5 (bowed)", - /* 94 */ "pad 6 (metallic)", - /* 95 */ "pad 7 (halo)", - /* 96 */ "pad 8 (sweep)", - - /* (97-104 synth effects) */ - /* 97 */ "fx 1 (rain)", - /* 98 */ "fx 2 (soundtrack)", - /* 99 */ "fx 3 (crystal)", - /* 100 */ "fx 4 (atmosphere)", - /* 101 */ "fx 5 (brightness)", - /* 102 */ "fx 6 (goblins)", - /* 103 */ "fx 7 (echoes)", - /* 104 */ "fx 8 (sci-fi)", - - /* (105-112 ethnic) */ - /* 105 */ "sitar", - /* 106 */ "banjo", - /* 107 */ "shamisen", - /* 108 */ "koto", - /* 109 */ "kalimba", - /* 110 */ "bagpipe", - /* 111 */ "fiddle", - /* 112 */ "shanai", - - /* (113-120 percussive) */ - /* 113 */ "tinkle bell", - /* 114 */ "agogo", - /* 115 */ "steel drums", - /* 116 */ "woodblock", - /* 117 */ "taiko drum", - /* 118 */ "melodic tom", - /* 119 */ "synth drum", - /* 120 */ "reverse cymbal", - - /* (121-128 sound effects) */ - /* 121 */ "guitar fret noise", - /* 122 */ "breath noise", - /* 123 */ "seashore", - /* 124 */ "bird tweet", - /* 125 */ "telephone ring", - /* 126 */ "helicopter", - /* 127 */ "applause", - /* 128 */ "gunshot", - 0 -}; - -Midi_instrument::Midi_instrument( int channel_i, String instrument_str ) - : Midi_item( 0 ) -{ - instrument_str_ = instrument_str; - instrument_str_.to_lower(); - channel_i_ = channel_i; -} - -String -Midi_instrument::str() const -{ - // ugh, does not work... - return String( "" ); - Byte program_byte = 0; - for ( int i = 0; instrument_name_sz_a_[i]; i++ ) - if ( instrument_str_ == String(instrument_name_sz_a_[ i ] )) { - program_byte = (Byte)i; - break; - } - if ( program_byte ) { - String str = String( (char)( 0xc0 + channel_i_ ) ); - str += String( (char)program_byte ); - return str; - } - return String( "" ); + +Midi_instrument::Midi_instrument (Audio_instrument *a) + : Midi_channel_item (a), + audio_ (a) +{ + audio_->str_ = String_convert::to_lower (audio_->str_); } -Midi_item::Midi_item( Audio_item* audio_item_l ) +string +Midi_instrument::to_string () const { - audio_item_l_ = audio_item_l; - channel_i_ = 0; + Byte program_byte = 0; + bool found = false; + + 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 = (Byte) scm_to_int (program); + else + warning (_f ("no such MIDI instrument: `%s'", audio_->str_.c_str ())); + + string str = ::to_string ((char) (0xc0 + channel_)); //YIKES! FIXME : Should be track. -rz + str += ::to_string ((char)program_byte); + return str; } -void -Midi_item::output( Midi_stream* midi_stream_l ) const +Midi_item::Midi_item () { - *midi_stream_l << str(); } -String -Midi_item::i2varint_str( int i ) +Midi_channel_item::Midi_channel_item (Audio_item *ai) + : channel_ (ai->channel_) { - int buffer_i = i & 0x7f; - while ( (i >>= 7) > 0 ) { - buffer_i <<= 8; - buffer_i |= 0x80; - buffer_i += (i & 0x7f); - } +} - String str; - while ( 1 ) { - str += (char)buffer_i; - if ( buffer_i & 0x80 ) - buffer_i >>= 8; - else - break; - } - return str; +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_) +{ +} + +Midi_item::~Midi_item () +{ } -Midi_key::Midi_key( Audio_item* audio_item_l ) - : Midi_item( audio_item_l ) +Midi_channel_item::~Midi_channel_item () { } -String -Midi_key::str() const +Midi_control_function_value_change::~Midi_control_function_value_change () { - Key_change_req* k = audio_item_l_->req_l_->command()->keychange(); - int sharps_i = k->sharps_i(); - int flats_i = k->flats_i(); +} + +string +int2midi_varint_string (int i) +{ + int buffer = i & 0x7f; + while ((i >>= 7) > 0) + { + buffer <<= 8; + buffer |= 0x80; + buffer += (i & 0x7f); + } + + string str; + while (1) + { + str += ::to_string ((char)buffer); + if (buffer & 0x80) + buffer >>= 8; + else + break; + } + return str; +} - // midi cannot handle non-conventional keys - if ( flats_i && sharps_i ) - return ""; - int accidentals_i = sharps_i - flats_i; +Midi_key::Midi_key (Audio_key *a) + : audio_ (a) +{ +} - String str = "ff5902"; - str += String_convert::i2hex_str( accidentals_i, 2, '0' ); - int minor_i = k->minor_b(); - str += String_convert::i2hex_str( minor_i, 2, '0' ); - return String_convert::hex2bin_str( str ); +string +Midi_key::to_string () const +{ + string str = "ff5902"; + str += String_convert::int2hex (audio_->accidentals_, 2, '0'); + if (audio_->major_) + str += String_convert::int2hex (0, 2, '0'); + else + str += String_convert::int2hex (1, 2, '0'); + return String_convert::hex2bin (str); } -Midi_note::Midi_note( Audio_item* audio_item_l ) - : Midi_item( audio_item_l ) +Midi_time_signature::Midi_time_signature (Audio_time_signature *a) + : audio_ (a), + clocks_per_1_ (18) { - // ugh - dynamic_byte_ = 0x64; - on_b_ = ( (Audio_note*)audio_item_l_ )->on_b_; - if ( on_b_ ) // poor man-s staff dynamics: - dynamic_byte_ -= 0x10 * channel_i_; - else - dynamic_byte_ += 0x32; // 0x64 is supposed to be neutral, but let-s try } -String -Midi_note::str() const +string +Midi_time_signature::to_string () const { - Note_req* n = audio_item_l_->req_l_->musical()->melodic()->note(); - int pitch_i = n->pitch() + c0_pitch_i_c_; - if ( pitch_i != INT_MAX ) { - Byte status_byte = ( on_b_ ? 0x90 : 0x80 ) + channel_i_; - String str = String( (char)status_byte ); - str += (char)pitch_i; - // poor man-s staff dynamics: - str += (char)dynamic_byte_; - return str; + int num = abs (audio_->beats_); + if (num > 255) + { + warning (_ ("Time signature with more than 255 beats. Truncating")); + num = 255; } - return String( "" ); + + int den = audio_->one_beat_; + + string str = "ff5804"; + str += String_convert::int2hex (num, 2, '0'); + str += String_convert::int2hex (intlog2 (den), 2, '0'); + str += String_convert::int2hex (clocks_per_1_, 2, '0'); + str += String_convert::int2hex (8, 2, '0'); + return String_convert::hex2bin (str); } -Midi_tempo::Midi_tempo( Audio_item* audio_item_l ) - : Midi_item( audio_item_l ) +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))) { - per_minute_4_i_ = ( (Audio_tempo*)audio_item_l_ )->per_minute_4_i_; } -Midi_tempo::Midi_tempo( int per_minute_4_i ) - : Midi_item( 0 ) +int +Midi_note::get_fine_tuning () const { - per_minute_4_i_ = per_minute_4_i; + Rational tune = (audio_->pitch_.tone_pitch () + + audio_->transposing_.tone_pitch ()) * Rational (2); + tune -= Rational (get_semitone_pitch ()); + + tune *= PITCH_WHEEL_SEMITONE; + return (int) double (tune); +} + +int +Midi_note::get_semitone_pitch () const +{ + double tune = double ((audio_->pitch_.tone_pitch () + + audio_->transposing_.tone_pitch ()) * Rational (2)); + return int (rint (tune)); } -String -Midi_tempo::str() const +string +Midi_note::to_string () const { - int useconds_per_4_i = 60 * (int)1e6 / per_minute_4_i_; - String str = "ff5103"; - str += String_convert::i2hex_str( useconds_per_4_i, 6, '0' ); - return String_convert::hex2bin_str( str ); + Byte status_byte = (char) (0x90 + channel_); + string str = ""; + int finetune; + + // print warning if fine tuning was needed, HJJ + if (get_fine_tuning () != 0) + { + finetune = PITCH_WHEEL_CENTER + get_fine_tuning (); + + str += ::to_string ((char) (0xE0 + channel_)); + str += ::to_string ((char) (finetune & 0x7F)); + str += ::to_string ((char) (finetune >> 7)); + str += ::to_string ((char) (0x00)); + } + + str += ::to_string ((char) status_byte); + str += ::to_string ((char) (get_semitone_pitch () + c0_pitch_)); + str += ::to_string ((char) dynamic_byte_); + + return str; } -Midi_meter::Midi_meter( Audio_item* audio_item_l ) - : Midi_item( audio_item_l ) +Midi_note_off::Midi_note_off (Midi_note *n) + : Midi_note (n->audio_) { - clocks_per_1_i_ = 18; + on_ = n; + channel_ = n->channel_; + + // use note_on with velocity=0 instead of note_off + aftertouch_byte_ = 0; } -String -Midi_meter::str() const +string +Midi_note_off::to_string () const { - Meter_change_req* m = audio_item_l_->req_l_->command()->meterchange(); - int num_i = m->beats_i_; - int den_i = m->one_beat_i_; + Byte status_byte = (char) (0x90 + channel_); + + string str = ::to_string ((char)status_byte); + str += ::to_string ((char) (get_semitone_pitch () + Midi_note::c0_pitch_)); + str += ::to_string ((char)aftertouch_byte_); + + if (get_fine_tuning () != 0) + { + // 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 >> 7)); + } - String str = "ff5804"; - str += String_convert::i2hex_str( num_i, 2, '0' ); - str += String_convert::i2hex_str( intlog2( den_i ) , 2, '0' ); - str += String_convert::i2hex_str( clocks_per_1_i_, 2, '0' ); - str += String_convert::i2hex_str( 8, 2, '0' ); - return String_convert::hex2bin_str( str ); + return str; } -Midi_text::Midi_text( Audio_item* audio_item_l ) - : Midi_item( audio_item_l ) +Midi_dynamic::Midi_dynamic (Audio_dynamic *a) + : Midi_channel_item (a), + audio_ (a) { - text_str_ = ( (Audio_text*)audio_item_l_ )->text_str_; - type_ = (Type)( (Audio_text*)audio_item_l_ )->type_; } -Midi_text::Midi_text( Midi_text::Type type, String text_str ) - : Midi_item( 0 ) +string +Midi_dynamic::to_string () const { - text_str_ = text_str; - type_ = type; + Byte status_byte = (char) (0xB0 + channel_); + string str = ::to_string ((char)status_byte); + + /* + Main volume controller (per channel): + 07 MSB + 27 LSB + */ + static Real const full_scale = 127; + + int volume = (int) (audio_->volume_ * full_scale); + if (volume <= 0) + volume = 1; + 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; } -String -Midi_text::str() const +Midi_piano_pedal::Midi_piano_pedal (Audio_piano_pedal *a) + : Midi_channel_item (a), + audio_ (a) { - String str = "ff" + String_convert::i2hex_str( type_, 2, '0' ); - str = String_convert::hex2bin_str( str ); - str += i2varint_str( text_str_.length_i() ); - str += text_str_; - return str; } -Midi_track::Midi_track() - : Midi_chunk() +string +Midi_piano_pedal::to_string () const { -// 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 + Byte status_byte = (char) (0xB0 + channel_); + string str = ::to_string ((char)status_byte); + + if (audio_->type_string_ == "Sostenuto") + str += ::to_string ((char)0x42); + else if (audio_->type_string_ == "Sustain") + str += ::to_string ((char)0x40); + else if (audio_->type_string_ == "UnaCorda") + str += ::to_string ((char)0x43); + + int pedal = ((1 - audio_->dir_) / 2) * 0x7f; + str += ::to_string ((char)pedal); + return str; +} - number_i_ = 0; - - char const* data_ch_C = "" -// "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" - ; +Midi_tempo::Midi_tempo (Audio_tempo *a) + : audio_ (a) +{ +} - String data_str; - // only for format 0 (currently using format 1)? - data_str += String_convert::hex2bin_str( data_ch_C ); +string +Midi_tempo::to_string () const +{ + int useconds_per_4 = 60 * (int)1e6 / audio_->per_minute_4_; + string str = "ff5103"; + str += String_convert::int2hex (useconds_per_4, 6, '0'); + return String_convert::hex2bin (str); +} - char const* footer_ch_C = "00" "ff2f" "00"; - String footer_str = String_convert::hex2bin_str( footer_ch_C ); +Midi_text::Midi_text (Audio_text *a) + : audio_ (a) +{ +} - set( "MTrk", data_str, footer_str ); +string +Midi_text::to_string () const +{ + string str = "ff" + String_convert::int2hex (audio_->type_, 2, '0'); + str = String_convert::hex2bin (str); + str += int2midi_varint_string (audio_->text_string_.length ()); + str += audio_->text_string_; + return str; } -void -Midi_track::add( int delta_time_i, String event_str ) +string +Midi_control_function_value_change::to_string () const { - if ( delta_time_i < 0 ) { - cout << String_convert::bin2hex_str( i2varint_str( delta_time_i ) ) << endl; - cout << String_convert::bin2hex_str( event_str ) << endl; + // 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 + { 11, 43 }, // expression + { 91, -1 }, // reverb level (only coarse resolution available) + { 93, -1 } // chorus level (only coarse resolution available) + }; + + 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 += ::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)); } - assert(delta_time_i >= 0); - Midi_chunk::add( i2varint_str( delta_time_i ) + event_str ); + return str; } -void -Midi_track::add( Moment delta_time_moment, Midi_item* mitem_l ) +char const * +Midi_item::name () const { - // use convention of 384 clocks per 4 - // use Duration_convert - int delta_time_i = delta_time_moment * Moment( 384 ) / Moment( 1, 4 ); - // ? int ( delta_time_moment * 4 * 384) - add( delta_time_i, mitem_l->str() ); + return this->class_name (); } -