用多媒体库 Bass.dll 播放 mp3 [17] : 如何从内存流播放 - 回复 "小李子子" 的问题
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用多媒体库 Bass.dll 播放 mp3 [17] : 如何从内存流播放 - 回复 "小李子子" 的问题
问题来源: http://www.cnblogs.com/del/archive/2008/12/20/1022124.html#1408043这是从 http://www.cnblogs.com/del/archive/2008/08/17/1269958.html 修改来的.
代码文件:
unit Unit1; interface uses 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" 文件版本不合适! ', nil, MB_ICONERROR); if not BASS_Init(-1, 44100, 0, 0, nil) then ShowMessage('初始化错误'); end; procedure TForm1.Button1Click(Sender: TObject); var Mp3Path: string; begin OpenDialog1.Filter := 'Mp3 文件(*.mp3)|*.mp3|Wav 文件(*.wav)|*wav'; if OpenDialog1.Execute then Mp3Path := OpenDialog1.FileName; {下面几行是与原来不同的代码} 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 < BASS_ERROR_ENDED then Text := '打开失败' else Text := string(Mp3Path); end; procedure TForm1.Button2Click(Sender: TObject); begin BASS_ChannelPlay(hs, False); end; procedure TForm1.Button3Click(Sender: TObject); begin BASS_ChannelPause(hs); end; procedure TForm1.Button4Click(Sender: TObject); begin BASS_ChannelStop(hs); end; procedure TForm1.FormDestroy(Sender: TObject); begin BASS_Free; if Assigned(mem) then mem.Free; {这也是新加的} end; end.窗体文件:
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 end endposted on 2008-12-20 21:30 万一 阅读(6412) 评论(23) 编辑 收藏
标签:end,Bass,17,mem,BASS,TObject,播放,procedure,Sender 来源: https://blog.51cto.com/u_14617575/2746640