ChomeNS/chomens-bot-java
3
1
Fork 3
Code Issues Pull requests Projects Releases Packages Wiki Activity

some stuff about MIDI . like PAN and new VOLUME CALCULATION

Browse source 
https://github.com/RaphiMC/NoteBlockLib
best project ever owo
This commit is contained in:
Chayapak 2023-10-02 20:16:19 +07:00
parent 232fa0a2bb
commit 6be81661ff
2 changed files with 38 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
src/main/java/land/chipmunk/chayapak/chomens_bot/plugins/MusicPlayerPlugin.java
View file

@ -335,11 +335,11 @@ public class MusicPlayerPlugin extends Bot.Listener {
if (average > 100) blockPosition = -(float) average / 100; // left
else if (average < 100) blockPosition = (float) average / 100; // right
} else {
// this uses the MIDI PITCH to calculate
final float pitch = note.originalPitch;
// this uses the MIDI PITCH and MIDI PANNING to calculate
final double pitch = (double) (note.originalPitch + note.panning) / 2;
if (pitch > 80) blockPosition = -(float) (pitch / -85) - 2; // right
else if (pitch < 20) blockPosition = (pitch / 15) - 2; // left
else if (pitch < 20) blockPosition = (float) ((pitch / 15) - 2); // left
blockPosition = MathUtilities.clamp(blockPosition, -0.4F, 0.4F);
}

45
src/main/java/land/chipmunk/chayapak/chomens_bot/song/MidiConverter.java
View file

@ -7,15 +7,19 @@ import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.util.*;
import static javax.sound.midi.ShortMessage.SYSTEM_RESET;
// Author: hhhzzzsss
// i modified this and some codes are stolen from https://github.com/RaphiMC/NoteBlockLib so thanks to them uwu
public class MidiConverter implements Converter {
public static final int TEXT = 0x01;
public static final int TRACK_NAME = 0x03;
public static final int LYRICS = 0x05;
public static final int VOLUME_CONTROL_MSB = 0x07;
public static final int PAN_CONTROL_MSB = 0x0A;
public static final int SET_INSTRUMENT = 0xC0;
public static final int SET_TEMPO = 0x51;
public static final int NOTE_ON = 0x90;
public static final int NOTE_OFF = 0x80;
public static final int RESET_CONTROLS = 0x79;
@Override
public Song getSongFromBytes(byte[] bytes, String name, Bot bot) throws InvalidMidiDataException, IOException {
@ -71,6 +75,11 @@ public class MidiConverter implements Converter {
tempoEvents.sort(Comparator.comparingLong(MidiEvent::getTick));
final int[] channelVolumes = new int[16];
final int[] channelPans = new int[16];
Arrays.fill(channelVolumes, 127);
Arrays.fill(channelPans, 64);
for (Track track : sequence.getTracks()) {
long microTime = 0;
int[] ids = new int[16];
@ -100,20 +109,22 @@ public class MidiConverter implements Converter {
if (sm.getCommand() == SET_INSTRUMENT) {
ids[sm.getChannel()] = sm.getData1();
}
else if (sm.getCommand() == NOTE_ON) {
else if (sm.getCommand() == ShortMessage.NOTE_ON) {
if (sm.getData2() == 0) continue;
int pitch = sm.getData1();
int velocity = sm.getData2();
int effectiveVelocity = (int) ((float) velocity * channelVolumes[sm.getChannel()] / 127);
int pan = channelPans[sm.getChannel()];
long deltaTick = event.getTick() - prevTick;
prevTick = event.getTick();
microTime += (mpq/tpq) * deltaTick;
Note note;
if (sm.getChannel() == 9) {
note = getMidiPercussionNote(pitch, velocity, microTime);
note = getMidiPercussionNote(pitch, effectiveVelocity, microTime, pan);
}
else {
note = getMidiInstrumentNote(ids[sm.getChannel()], pitch, velocity, microTime);
note = getMidiInstrumentNote(ids[sm.getChannel()], pitch, effectiveVelocity, microTime, pan);
}
if (note != null) {
song.add(note);
@ -124,7 +135,7 @@ public class MidiConverter implements Converter {
song.length = time;
}
}
else if (sm.getCommand() == NOTE_OFF) {
else if (sm.getCommand() == ShortMessage.NOTE_OFF) {
long deltaTick = event.getTick() - prevTick;
prevTick = event.getTick();
microTime += (mpq/tpq) * deltaTick;
@ -133,6 +144,20 @@ public class MidiConverter implements Converter {
song.length = time;
}
}
else if (sm.getCommand() == ShortMessage.CONTROL_CHANGE) {
if (sm.getData1() == VOLUME_CONTROL_MSB) {
channelVolumes[sm.getChannel()] = sm.getData2();
} else if (sm.getData1() == PAN_CONTROL_MSB) {
channelPans[sm.getChannel()] = sm.getData2();
} else if (sm.getData1() == RESET_CONTROLS) {
channelVolumes[sm.getChannel()] = 127;
channelPans[sm.getChannel()] = 64;
}
}
else if (sm.getCommand() == SYSTEM_RESET) {
Arrays.fill(channelVolumes, 127);
Arrays.fill(channelPans, 64);
}
}
if (lyrics.get(event.getTick()) != null) {
@ -146,7 +171,7 @@ public class MidiConverter implements Converter {
return song;
}
public static Note getMidiInstrumentNote(int midiInstrument, int midiPitch, int velocity, long microTime) {
public static Note getMidiInstrumentNote(int midiInstrument, int midiPitch, int velocity, long microTime, int panning) {
Instrument instrument = null;
Instrument[] instrumentList = instrumentMap.get(midiInstrument);
if (instrumentList != null) {
@ -193,10 +218,10 @@ public class MidiConverter implements Converter {
float volume = (float) velocity / 127.0f;
long time = microTime / 1000L;
return new Note(instrument, pitch, midiPitch, volume, time, -1, 100);
return new Note(instrument, pitch, midiPitch, volume, time, (int) ((panning - 64) / (float) 64), 100);
}
private static Note getMidiPercussionNote (int midiPitch, int velocity, long microTime) {
private static Note getMidiPercussionNote (int midiPitch, int velocity, long microTime, int panning) {
if (percussionMap.containsKey(midiPitch)) {
int noteId = percussionMap.get(midiPitch);
int pitch = noteId % 25;
@ -204,7 +229,7 @@ public class MidiConverter implements Converter {
Instrument instrument = Instrument.fromId(noteId / 25);
long time = microTime / 1000L;
return new Note(instrument, pitch, midiPitch, volume, time, -1, 100);
return new Note(instrument, pitch, midiPitch, volume, time, (int) ((panning - 64) / (float) 64), 100);
}
return null;
}