本例效果圖:
代碼文件:
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, ExtCtrls;
type
TForm1 = class(TForm)
OpenDialog1: TOpenDialog;
Timer1: TTimer;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
uses Bass;
var
hs: HSTREAM; {流句柄}
procedure TForm1.FormCreate(Sender: TObject);
begin
Timer1.Interval := 200;
if HiWord(BASS_GetVersion) <> BASSVERSION then
MessageBox(0, '"Bass.dll" 文件版本不合適! ', nil, MB_ICONERROR);
if not BASS_Init(-1, 44100, 0, 0, nil) then
ShowMessage('初始化錯誤');
end;
{打開}
procedure TForm1.Button1Click(Sender: TObject);
var
Mp3Path: AnsiString;
begin
BASS_StreamFree(hs);
OpenDialog1.Filter := 'Mp3 文件(*.mp3)|*.mp3|Wav 文件(*.wav)|*wav';
if OpenDialog1.Execute then
Mp3Path := AnsiString(OpenDialog1.FileName);
hs := BASS_StreamCreateFile(False, PAnsiChar(Mp3Path), 0, 0, 0);
{想下面這樣建立播放流, 直接就是循環播放的}
//hs := BASS_StreamCreateFile(False, PAnsiChar(Mp3Path), 0, 0, BASS_SAMPLE_LOOP);
if hs < BASS_ERROR_ENDED then Text := '打開失敗'
end;
{播放}
procedure TForm1.Button2Click(Sender: TObject);
begin
BASS_ChannelPlay(hs, False);
end;
{暫停}
procedure TForm1.Button3Click(Sender: TObject);
begin
BASS_ChannelPause(hs);
end;
{停止}
procedure TForm1.Button4Click(Sender: TObject);
begin
BASS_ChannelStop(hs);
end;
{監視播放狀態}
procedure TForm1.Timer1Timer(Sender: TObject);
var
str: string;
begin
if hs = 0 then Exit; {如果播放流沒有建立則退出}
case BASS_ChannelIsActive(hs) of
BASS_ACTIVE_STOPPED: str := '停止狀態';
BASS_ACTIVE_PLAYING: str := '正在播放';
BASS_ACTIVE_STALLED: str := '失速狀態, 正在等待數據';
BASS_ACTIVE_PAUSED: str := '暫停狀態';
end;
Text := str;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
BASS_Free;
end;
end.
窗體文件:
object Form1: TForm1
Left = 222
Top = 114
Caption = 'Form1'
ClientHeight = 90
ClientWidth = 254
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'Tahoma'
Font.Style = []
OldCreateOrder = False
Position = poDesigned
OnCreate = FormCreate
OnDestroy = FormDestroy
PixelsPerInch = 96
TextHeight = 13
object Button1: TButton
Left = 49
Top = 17
Width = 75
Height = 25
Caption = #25171#24320
TabOrder = 0
OnClick = Button1Click
end
object Button2: TButton
Left = 130
Top = 17
Width = 75
Height = 25
Caption = #25773#25918
TabOrder = 1
OnClick = Button2Click
end
object Button3: TButton
Left = 49
Top = 48
Width = 75
Height = 25
Caption = #26242#20572
TabOrder = 2
OnClick = Button3Click
end
object Button4: TButton
Left = 130
Top = 48
Width = 75
Height = 25
Caption = #20572#27490
TabOrder = 3
OnClick = Button4Click
end
object OpenDialog1: TOpenDialog
Left = 216
end
object Timer1: TTimer
OnTimer = Timer1Timer
end
