Question

当我选择.mp3文件时，它会在启动setup.exe时播放，但当我将其更改为.xm或.s3m时，它不会播放

[Setup]
AppName=Bass Audio Project
AppVersion=1.0
DefaultDirName={pf}\Bass Audio Project

[Files]
Source: "Bass.dll"; Flags: dontcopy
Source: "tune.xm"; Flags: dontcopy

[CustomMessages]
SoundCtrlButtonCaptionSoundOn=Play
SoundCtrlButtonCaptionSoundOff=Mute

[Code]
const  
  BASS_SAMPLE_LOOP = 4;
  BASS_ACTIVE_STOPPED = 0;
  BASS_ACTIVE_PLAYING = 1;
  BASS_ACTIVE_STALLED = 2;
  BASS_ACTIVE_PAUSED  = 3;
  BASS_UNICODE = $80000000;
  BASS_CONFIG_GVOL_STREAM = 5;
const
  #ifndef UNICODE
    EncodingFlag = 0;
  #else
    EncodingFlag = BASS_UNICODE;
  #endif
type
  HSTREAM = DWORD;

function BASS_Init(device: LongInt; freq, flags: DWORD; 
  win: HWND; clsid: Cardinal): BOOL;
  external 'BASS_Init@files:bass.dll stdcall';
function BASS_StreamCreateFile(mem: BOOL; f: string; offset1: DWORD; 
  offset2: DWORD; length1: DWORD; length2: DWORD; flags: DWORD): HSTREAM;
  external 'BASS_StreamCreateFile@files:bass.dll stdcall';
function BASS_Start: BOOL;
  external 'BASS_Start@files:bass.dll stdcall';
function BASS_Pause: BOOL;
  external 'BASS_Pause@files:bass.dll stdcall';
function BASS_ChannelPlay(handle: DWORD; restart: BOOL): BOOL; 
  external 'BASS_ChannelPlay@files:bass.dll stdcall';
function BASS_SetConfig(option: DWORD; value: DWORD ): BOOL;
  external 'BASS_SetConfig@files:bass.dll stdcall';
function BASS_ChannelIsActive(handle: DWORD): DWORD;
  external 'BASS_ChannelIsActive@files:bass.dll stdcall';
function BASS_Free: BOOL;
  external 'BASS_Free@files:bass.dll stdcall';

var
  SoundStream: HSTREAM;
  SoundCtrlButton: TNewButton;
  Muted: Boolean;

procedure SoundCtrlButtonClick(Sender: TObject);
begin
  if not Muted then
  begin
    if BASS_SetConfig(BASS_CONFIG_GVOL_STREAM, 0) then
    begin
      SoundCtrlButton.Caption := 'Play'; 
      Muted := True;
    end;
  end
    else
  begin
    if BASS_SetConfig(BASS_CONFIG_GVOL_STREAM, 2500) then
    begin
      SoundCtrlButton.Caption := 'Mute'; 
      Muted := False;
    end;
  end;
end;

procedure InitializeWizard;
begin
  ExtractTemporaryFile('tune.xm');
  if BASS_Init(-1, 44100, 0, 0, 0) then
  begin
    SoundStream := BASS_StreamCreateFile(False, 
      ExpandConstant('{tmp}\tune.xm'), 0, 0, 0, 0, 
      EncodingFlag or BASS_SAMPLE_LOOP);
    BASS_SetConfig(BASS_CONFIG_GVOL_STREAM, 2500);
    BASS_ChannelPlay(SoundStream, False);

    SoundCtrlButton := TNewButton.Create(WizardForm);
    SoundCtrlButton.Parent := WizardForm;
    SoundCtrlButton.Left := 8;
    SoundCtrlButton.Top := WizardForm.ClientHeight - 
      SoundCtrlButton.Height - 8;
    SoundCtrlButton.Width := 40;
    SoundCtrlButton.Caption :=
      ExpandConstant('{cm:SoundCtrlButtonCaptionSoundOff}');
    SoundCtrlButton.OnClick := @SoundCtrlButtonClick;
  end;
end;

procedure DeinitializeSetup;
begin
  BASS_Free;
end;

我该怎么办？我想使用.xm或.s3m的原始文件，而不是转换后的.mp3文件。

如Un4seen所示，bass.dll支持.xm和.s3m。

Answer 1

实际上，BASS_StreamCreateFile为两个文件都返回0。

如果您之后致电BASS_ErrorGetCode，则会返回41 = BASS_ERROR_FILEFORM（不支持的文件格式）。

function BASS_ErrorGetCode(): Integer;
  external 'BASS_ErrorGetCode@files:bass.dll stdcall';

SoundStream := BASS_StreamCreateFile(...);
if SoundStream = 0 then
begin
  Log(Format('Error playing file, error code = %d', [BASS_ErrorGetCode]));
end;

但正如您所说的那样，您应该使用BASS_MusicLoad作为MO3 / IT / XM / S3M / MTM / MOD / UMX格式。

type
  HMUSIC = DWORD;

function BASS_MusicLoad(
    mem: BOOL; f: string; offset: Int64; length, flags, freq: DWORD): HMUSIC;
    external 'BASS_MusicLoad@files:bass.dll stdcall';

将BASS_StreamCreateFile来电替换为：

BASS_MusicLoad(
  False, ExpandConstant('{tmp}\tune.xm'), 0, 0,   
  EncodingFlag or BASS_SAMPLE_LOOP, 0)

从语义上讲，您还应将SoundStream变量重命名为Music或类似名称;并将其类型更改为HMUSIC。

.xm和.s3m文件无法在Inno Setup的BASS库中播放，只能播放.mp3

1 个答案: