.xm and .s3m file doesn't play in BASS library from Inno Setup, only .mp3

Question

When I choose .mp3 file, it will play when launching setup.exe but when I change it to .xm or .s3m, it doesn\'t play

Answer 1

Indeed, the BASS_StreamCreateFile returns 0 for both files.

And if you call BASS_ErrorGetCode afterwards, it returns 41 = BASS_ERROR_FILEFORM (unsupported file format).

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;

---

But as you correctly hinted, you should use the BASS_MusicLoad for MO3 / IT / XM / S3M / MTM / MOD / UMX formats.

type
  HMUSIC = DWORD;

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

Replace the BASS_StreamCreateFile call with:

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

Semantically, your should also rename the SoundStream variable to Music or similar; and change its type to HMUSIC.