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BASS_ChannelGetPosition

Retrieves the playback position of a sample, stream, or MOD music. Can also be used with a recording channel.

QWORD BASS_ChannelGetPosition(
    DWORD handle,
    DWORD mode
);

handle

The channel handle... a HCHANNEL, HMUSIC, HSTREAM, or HRECORD.

mode

How to retrieve the position. One of the following, with optional flags.

BASS_POS_BYTE	Get the position in bytes.
BASS_POS_MUSIC_ORDER	Get the position in orders and rows... LOWORD = order, HIWORD = row * scaler (BASS_ATTRIB_MUSIC_PSCALER). (HMUSIC only)
BASS_POS_DECODE	Flag: Get the decoding/rendering position, which may be ahead of the playback position due to buffering. This flag is unnecessary with decoding channels because the decoding position will always be given for them anyway, as they do not have playback buffers.

other modes & flags may be supported by add-ons, see the documentation.

If successful, then the channel's position is returned, else -1 is returned. Use BASS_ErrorGetCode to get the error code.

BASS_ERROR_HANDLE	handle is not a valid channel.
BASS_ERROR_NOTAVAIL	The requested position is not available.
BASS_ERROR_UNKNOWN	Some other mystery problem!