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flutter_midi.dart
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flutter_midi.dart
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import 'dart:async';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'local_storage.dart';
class FlutterMidi {
static const MethodChannel _channel = MethodChannel('flutter_midi');
/// Needed so that the sound font is loaded
/// On iOS make sure to include the sound_font.SF2 in the Runner folder.
/// This does not work in the simulator.
static Future<String> prepare(
{@required ByteData sf2, String name = "instrument.sf2"}) async {
File _file = await writeToFile(sf2, name: name);
final Map<dynamic, dynamic> mapData = <dynamic, dynamic>{};
mapData["path"] = _file.path;
print("Path => ${_file.path}");
final String result = await _channel.invokeMethod('prepare_midi', mapData);
print("Result: $result");
return result;
}
/// Needed so that the sound font is loaded
/// On iOS make sure to include the sound_font.SF2 in the Runner folder.
/// This does not work in the simulator.
static Future<String> changeSound(
{@required ByteData sf2, String name = "instrument.sf2"}) async {
File _file = await writeToFile(sf2, name: name);
final Map<dynamic, dynamic> mapData = <dynamic, dynamic>{};
mapData["path"] = _file.path;
print("Path => ${_file.path}");
final String result = await _channel.invokeMethod('change_sound', mapData);
print("Result: $result");
return result;
}
/// Unmute the device temporarly even if the mute switch is on or toggled in settings.
static Future<String> unmute() async {
final String result = await _channel.invokeMethod('unmute');
return result;
}
/// Use this when stopping the sound onTouchUp or to cancel a long file.
/// Not needed if playing midi onTap.
static Future<String> stopMidiNote({
@required int midi,
}) async {
final Map<dynamic, dynamic> mapData = <dynamic, dynamic>{};
print("Pressed: $midi");
mapData["note"] = midi;
final String result =
await _channel.invokeMethod('stop_midi_note', mapData);
return result;
}
/// Play a midi note from the sound_font.SF2 library bundled with the application.
/// Play a midi note in the range between 0-256
/// Multiple notes can be played at once as seperate calls.
static Future<String> playMidiNote({
@required int midi,
}) async {
final Map<dynamic, dynamic> mapData = <dynamic, dynamic>{};
print("Pressed: $midi");
mapData["note"] = midi;
return await _channel.invokeMethod('play_midi_note', mapData);
}
}