diff options
Diffstat (limited to 'Game/Code/lib/midi/demo/MidiTest.pas')
| -rw-r--r-- | Game/Code/lib/midi/demo/MidiTest.pas | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/Game/Code/lib/midi/demo/MidiTest.pas b/Game/Code/lib/midi/demo/MidiTest.pas new file mode 100644 index 00000000..0cf3e302 --- /dev/null +++ b/Game/Code/lib/midi/demo/MidiTest.pas @@ -0,0 +1,249 @@ +// Test application for TMidiFile
+
+unit MidiTest;
+
+interface
+
+uses
+ Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
+ StdCtrls, MidiFile, ExtCtrls, MidiOut, MidiType, MidiScope, Grids;
+type
+ TMidiPlayer = class(TForm)
+ OpenDialog1: TOpenDialog;
+ Button1: TButton;
+ Button3: TButton;
+ Button4: TButton;
+ MidiOutput1: TMidiOutput;
+ cmbInput: TComboBox;
+ MidiFile1: TMidiFile;
+ MidiScope1: TMidiScope;
+ Label3: TLabel;
+ edtBpm: TEdit;
+ Memo2: TMemo;
+ edtTime: TEdit;
+ Button2: TButton;
+ TrackGrid: TStringGrid;
+ TracksGrid: TStringGrid;
+ edtLength: TEdit;
+ procedure Button1Click(Sender: TObject);
+ procedure MidiFile1MidiEvent(event: PMidiEvent);
+ procedure Button3Click(Sender: TObject);
+ procedure Button4Click(Sender: TObject);
+ procedure FormCreate(Sender: TObject);
+ procedure cmbInputChange(Sender: TObject);
+ procedure MidiFile1UpdateEvent(Sender: TObject);
+ procedure Button2Click(Sender: TObject);
+ procedure edtBpmKeyPress(Sender: TObject; var Key: Char);
+ procedure TracksGridSelectCell(Sender: TObject; Col, Row: Integer;
+ var CanSelect: Boolean);
+ procedure FormShow(Sender: TObject);
+ private
+ { Private declarations }
+ MidiOpened : boolean;
+ procedure SentAllNotesOff;
+
+ procedure MidiOpen;
+ procedure MidiClose;
+
+ public
+ { Public declarations }
+ end;
+
+var
+ MidiPlayer: TMidiPlayer;
+
+implementation
+
+{$R *.DFM}
+
+procedure TMidiPlayer.Button1Click(Sender: TObject);
+var
+ i,j: integer;
+ track : TMidiTrack;
+ event : PMidiEvent;
+begin
+ if opendialog1.execute then
+ begin
+ midifile1.filename := opendialog1.filename;
+ midifile1.readfile;
+// label1.caption := IntToStr(midifile1.NumberOfTracks);
+ edtBpm.text := IntToStr(midifile1.Bpm);
+// TracksGrid.cells.clear;
+ for i := 0 to midifile1.NumberOfTracks-1 do
+ begin
+ track := midifile1.getTrack(i);
+ TracksGrid.cells[0,i] := 'Tr: '+ track.getName + ' '+ track.getInstrument ;
+ end;
+ edtLength.Text := MyTimeToStr(MidiFile1.GetTrackLength);
+ end;
+end;
+
+procedure TMidiPlayer.MidiFile1MidiEvent(event: PMidiEvent);
+var mEvent : TMyMidiEvent;
+begin
+ mEvent := TMyMidiEvent.Create;
+ if not (event.event = $FF) then
+ begin
+ mEvent.MidiMessage := event.event;
+ mEvent.data1 := event.data1;
+ mEvent.data2 := event.data2;
+ midioutput1.PutMidiEvent(mEvent);
+ end
+ else
+ begin
+ if (event.data1 >= 1) and (event.data1 < 15) then
+ begin
+ memo2.Lines.add(IntToStr(event.data1) + ' '+ event.str);
+ end
+ end;
+ midiScope1.MidiEvent(event.event,event.data1,event.data2);
+ mEvent.Destroy;
+end;
+
+procedure TMidiPlayer.SentAllNotesOff;
+var mEvent : TMyMidiEvent;
+channel : integer;
+begin
+ mEvent := TMyMidiEvent.Create;
+ for channel:= 0 to 15 do
+ begin
+ mEvent.MidiMessage := $B0 + channel;
+ mEvent.data1 := $78;
+ mEvent.data2 := 0;
+ if MidiOpened then
+ midioutput1.PutMidiEvent(mEvent);
+ midiScope1.MidiEvent(mEvent.MidiMessage,mEvent.data1,mEvent.data2);
+ end;
+ mEvent.Destroy;
+end;
+
+procedure TMidiPlayer.Button3Click(Sender: TObject);
+begin
+ midifile1.StartPlaying;
+end;
+
+procedure TMidiPlayer.Button4Click(Sender: TObject);
+begin
+ midifile1.StopPlaying;
+ SentAllNotesOff;
+end;
+
+procedure TMidiPlayer.MidiOpen;
+begin
+ if not (cmbInput.Text = '') then
+ begin
+ MidiOutput1.ProductName := cmbInput.Text;
+ MidiOutput1.OPEN;
+ MidiOpened := true;
+ end;
+end;
+
+procedure TMidiPlayer.MidiClose;
+begin
+ if MidiOpened then
+ begin
+ MidiOutput1.Close;
+ MidiOpened := false;
+ end;
+end;
+
+
+procedure TMidiPlayer.FormCreate(Sender: TObject);
+var thisDevice : integer;
+begin
+ for thisDevice := 0 to MidiOutput1.NumDevs - 1 do
+ begin
+ MidiOutput1.DeviceID := thisDevice;
+ cmbInput.Items.Add(MidiOutput1.ProductName);
+ end;
+ cmbInput.ItemIndex := 0;
+ MidiOpened := false;
+ MidiOpen;
+end;
+
+procedure TMidiPlayer.cmbInputChange(Sender: TObject);
+begin
+ MidiClose;
+ MidiOPen;
+end;
+
+procedure TMidiPlayer.MidiFile1UpdateEvent(Sender: TObject);
+begin
+ edtTime.Text := MyTimeToStr(MidiFile1.GetCurrentTime);
+ edtTime.update;
+ if MidiFile1.ready then
+ begin
+ midifile1.StopPlaying;
+ SentAllNotesOff;
+ end;
+end;
+
+procedure TMidiPlayer.Button2Click(Sender: TObject);
+begin
+ MidiFile1.ContinuePlaying;
+end;
+
+procedure TMidiPlayer.edtBpmKeyPress(Sender: TObject; var Key: Char);
+begin
+ if Key = char(13) then
+ begin
+ MidiFile1.Bpm := StrToInt(edtBpm.Text);
+ edtBpm.text := IntToStr(midifile1.Bpm);
+ abort;
+ end;
+
+end;
+
+procedure TMidiPlayer.TracksGridSelectCell(Sender: TObject; Col,
+ Row: Integer; var CanSelect: Boolean);
+var
+ MidiTrack : TMidiTrack;
+ i : integer;
+ j : integer;
+ event : PMidiEvent;
+begin
+ CanSelect := false;
+ if Row < MidiFile1.NumberOfTracks then
+ begin
+ CanSelect := true;
+ MidiTrack := MidiFile1.GetTrack(Row);
+ TrackGrid.RowCount := 2;
+ TrackGrid.RowCount := MidiTrack.getEventCount;
+ j := 1;
+ for i := 0 to MidiTrack.GetEventCount-1 do
+ begin
+ event := MidiTrack.getEvent(i);
+ if not (event.len = -1) then
+ begin // do not print when
+ TrackGrid.cells[0,j] := IntToStr(i);
+ TrackGrid.cells[1,j] := MyTimeToStr(event.time);
+ TrackGrid.cells[2,j] := IntToHex(event.event,2);
+ if not (event.event = $FF) then
+ begin
+ TrackGrid.cells[3,j] := IntToStr(event.len);
+ TrackGrid.cells[4,j] := KeyToStr(event.data1);
+ TrackGrid.cells[5,j] := IntToStr(event.data2);
+ end
+ else
+ begin
+ TrackGrid.cells[3,j] := IntToStr(event.data1);
+ TrackGrid.cells[4,j] := '';
+ TrackGrid.cells[5,j] := event.str;
+ end;
+ inc(j);
+ end;
+ end;
+ TrackGrid.RowCount := j;
+ end;
+end;
+
+procedure TMidiPlayer.FormShow(Sender: TObject);
+begin
+ TrackGrid.ColWidths[0] := 30;
+ TrackGrid.ColWidths[2] := 30;
+ TrackGrid.ColWidths[3] := 30;
+ TrackGrid.ColWidths[4] := 30;
+ TrackGrid.ColWidths[5] := 100;
+end;
+
+end.
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