private void buttonPlay_Click(object sender, System.EventArgs e)
{
this.checkBoxSwap.Checked = false;
this.checkBoxFlanger.Checked = false;
this.checkBoxEcho.Checked = false;
Bass.BASS_StreamFree(_StreamFX);
if (_FileName != String.Empty)
{
// create the decoding stream
_Stream = Bass.BASS_StreamCreateFile(_FileName, 0, 0, BASSFlag.BASS_STREAM_DECODE | BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_STREAM_PRESCAN);
if (_Stream != 0)
{
_20mslength = (int)Bass.BASS_ChannelSeconds2Bytes(_Stream, 0.02f); // 20ms window
// and start to get the BPM...BEFORE! playing
bpmProc = new BPMPROCESSPROC(MyBPMProc);
float bpm = BassFx.BASS_FX_BPM_DecodeGet(_Stream, 1f, 180f, Utils.MakeLong(50, 180), BASSFXBpm.BASS_FX_BPM_BKGRND | BASSFXBpm.BASS_FX_FREESOURCE | BASSFXBpm.BASS_FX_BPM_MULT2, bpmProc, IntPtr.Zero);
this.labelBPM.Text = String.Format("BPM={0}", bpm);
// and set the position back...so that we hear the playback from the beginning...
// never get the BPM from '_Stream' while playing...this will steel the data from the decoding channel
Bass.BASS_ChannelSetPosition(_Stream, 0);
// now we create a Tempo channel...the actual playing channel
_StreamFX = BassFx.BASS_FX_TempoCreate(_Stream, BASSFlag.BASS_FX_FREESOURCE | BASSFlag.BASS_SAMPLE_FLOAT | BASSFlag.BASS_SAMPLE_LOOP);
}
if (_StreamFX != 0 && Bass.BASS_ChannelPlay(_StreamFX, false))
{
this.timerUpdate.Start();
// real-time beat position
beatProc = new BPMBEATPROC(MyBeatProc);
BassFx.BASS_FX_BPM_BeatCallbackSet(_StreamFX, beatProc, IntPtr.Zero);
}
else
{
Console.WriteLine("Error = {0}", Bass.BASS_ErrorGetCode());
}
}
}
public override bool Execute(ref TrackData track, int rowIndex)
{
TracksGrid.SetProgressBar(100);
int stream = Bass.BASS_StreamCreateFile(track.FullFileName, 0, 0, BASSFlag.BASS_STREAM_DECODE);
if (stream == 0)
{
Log.Error("BPM: Could not create stream for {0}. {1}", track.FullFileName, Bass.BASS_ErrorGetCode());
return false;
}
_bpmProc = BpmProgressProc;
double len = Bass.BASS_ChannelBytes2Seconds(stream, Bass.BASS_ChannelGetLength(stream));
float bpm = BassFx.BASS_FX_BPM_DecodeGet(stream, 0.0, len, 0, BASSFXBpm.BASS_FX_BPM_BKGRND | BASSFXBpm.BASS_FX_FREESOURCE | BASSFXBpm.BASS_FX_BPM_MULT2,
_bpmProc, IntPtr.Zero);
track.BPM = Convert.ToInt32(bpm);
BassFx.BASS_FX_BPM_Free(stream);
TracksGrid.MainForm.progressBar1.Value = 0;
return true;
}
public static extern float BASS_FX_BPM_DecodeGet(int channel, double startSec, double endSec, int minMaxBPM, BASSFXBpm flags, BPMPROCESSPROC proc);
/// <summary>
/// Detects the BPM
/// </summary>
public void Bpm()
{
log.Trace(">>>");
int trackCount = tracksGrid.SelectedRows.Count;
foreach (DataGridViewRow row in tracksGrid.Rows)
{
SetProgressBar(100);
ClearStatusColumn(row.Index);
if (!row.Selected)
{
continue;
}
Application.DoEvents();
if (_progressCancelled)
{
ResetProgressBar();
return;
}
TrackData track = Options.Songlist[row.Index];
int stream = Bass.BASS_StreamCreateFile(track.FullFileName, 0, 0, BASSFlag.BASS_STREAM_DECODE);
if (stream == 0)
{
log.Error("BPM: Could not create stream for {0}. {1}", track.FullFileName, Bass.BASS_ErrorGetCode());
continue;
}
GCHandle rowIndex = GCHandle.Alloc(row.Index);
_bpmProc = BPMProgressProc;
double len = Bass.BASS_ChannelBytes2Seconds(stream, Bass.BASS_ChannelGetLength(stream));
float bpm = BassFx.BASS_FX_BPM_DecodeGet(stream, 0.0, len, 0, BASSFXBpm.BASS_FX_BPM_BKGRND | BASSFXBpm.BASS_FX_FREESOURCE |BASSFXBpm.BASS_FX_BPM_MULT2,
_bpmProc,GCHandle.ToIntPtr(rowIndex));
track.BPM = Convert.ToInt32(bpm);
BassFx.BASS_FX_BPM_Free(stream);
SetBackgroundColorChanged(row.Index);
track.Changed = true;
Options.Songlist[row.Index] = track;
_itemsChanged = true;
}
Util.SendProgress("");
ResetProgressBar();
tracksGrid.Refresh();
tracksGrid.Parent.Refresh();
log.Trace("<<<");
}
public static extern float BASS_FX_BPM_DecodeGet(int channel, double startSec, double endSec, int minMaxBPM, BASSFXBpm flags, BPMPROCESSPROC proc);
