用多媒體庫 Bass.dll 播放 mp3 [17] : 如何從記憶體流播放 – 回複 “小李子子” 的問題

問題來源: http://www.cnblogs.com/del/archive/2008/12/20/1022124.html#1408043

這是從 http://www.cnblogs.com/del/archive/2008/08/17/1269958.html 修改來的.

代碼檔案:

unit Unit1;interfaceuses  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  Dialogs, StdCtrls;type  TForm1 = class(TForm)    OpenDialog1: TOpenDialog;    Button1: TButton;    Button2: TButton;    Button3: TButton;    Button4: TButton;    procedure FormCreate(Sender: TObject);    procedure Button1Click(Sender: TObject);    procedure Button2Click(Sender: TObject);    procedure Button3Click(Sender: TObject);    procedure Button4Click(Sender: TObject);    procedure FormDestroy(Sender: TObject);  end;var  Form1: TForm1;implementation{$R *.dfm}uses Bass;var  hs: HSTREAM;  mem: TMemoryStream; {新加的}procedure TForm1.FormCreate(Sender: TObject);begin  if HiWord(BASS_GetVersion)  BASSVERSION then    MessageBox(0, '"Bass.dll" 檔案版本不合適! ', nil, MB_ICONERROR);  if not BASS_Init(-1, 44100, 0, 0, nil) then    ShowMessage('初始化錯誤');end;procedure TForm1.Button1Click(Sender: TObject);var  Mp3Path: string;begin  OpenDialog1.Filter := 'Mp3 檔案(*.mp3)|*.mp3|Wav 檔案(*.wav)|*wav';  if OpenDialog1.Execute then Mp3Path := OpenDialog1.FileName;  {下面幾行是與原來不同的代碼}  if not Assigned(mem) then mem := TMemoryStream.Create;  mem.LoadFromFile(Mp3Path);  mem.Position := 0;  BASS_StreamFree(hs);  hs := BASS_StreamCreateFile(True, mem.Memory, 0, mem.Size, 0);  if hs 

表單檔案:

object Form1: TForm1  Left = 0  Top = 0  Caption = 'Form1'  ClientHeight = 117  ClientWidth = 202  Color = clBtnFace  Font.Charset = DEFAULT_CHARSET  Font.Color = clWindowText  Font.Height = -11  Font.Name = 'Tahoma'  Font.Style = []  OldCreateOrder = False  OnCreate = FormCreate  OnDestroy = FormDestroy  PixelsPerInch = 96  TextHeight = 13  object Button1: TButton    Left = 16    Top = 17    Width = 75    Height = 25    Caption = #25171#24320    TabOrder = 0    OnClick = Button1Click  end  object Button2: TButton    Left = 112    Top = 17    Width = 75    Height = 25    Caption = #25773#25918    TabOrder = 1    OnClick = Button2Click  end  object Button3: TButton    Left = 112    Top = 48    Width = 75    Height = 25    Caption = #26242#20572    TabOrder = 2    OnClick = Button3Click  end  object Button4: TButton    Left = 112    Top = 79    Width = 75    Height = 25    Caption = #20572#27490    TabOrder = 3    OnClick = Button4Click  end  object OpenDialog1: TOpenDialog    Left = 40    Top = 56  endend