ZPlay.DetectFileBPM Method

Detect beat-per-minute value of specified file. ANSI version.

Pascal

function DetectFileBPM(const FileName: AnsiString; Format: TStreamFormat; Method: TBMPDetectionMethod): Integer;

Parameters

Parameters	Description
const FileName: AnsiString	String specifying file name.
Format: TStreamFormat	Stream format identifier. Use sfAutodetect if you need to autodetect stream format of specified file.
Method: TBMPDetectionMethod	Detection method. See valid detection methods.

Returns

BPM value. If algorithm can't detect BPM value, return value is 0.

Remarks

This function will open temporary stream and detect beat-per-minute. When detection process is done, stream will be closed.

Note: Detection process can take some time.

Warning: This function WILL NOT interfere with current playing.

BPM detection algorithm isn't 100 % accurate. Algorithm will stop when first valid BPM value is detected. If BPM value can't be detected, algorithm will try to search whole stream. If this fails, returned BPM value is 0.