private void PlayRandom()
{
if (lstMusic.Items.Count == 0)
{
return;
}
long lt = 0, et = DateTime.Now.Ticks;
foreach (object var in lstMusic.Items)
{
MusicData m = (MusicData)var;
if (m.LastPlayedTicks > lt)
{
lt = m.LastPlayedTicks;
}
if (m.LastPlayedTicks < et)
{
et = m.LastPlayedTicks;
}
}
double sum = 0.0;
double timeRate = setting.TimeWeight;
if (lt != et)
{
timeRate /= lt - et;
}
double fixedRate = 100.0 - setting.TimeWeight;
int index = random.Next(lstMusic.Items.Count), i = 0;
foreach (object var in lstMusic.Items)
{
MusicData m = (MusicData)var;
double p = (100.0 - m.SkipRate) * (fixedRate + timeRate * (double)(lt - m.LastPlayedTicks));
sum += p;
if (sum * random.Next() / int.MaxValue < p)
{
index = i;
}
i++;
}
lstMusic.SelectedIndex = index;
PlaySelected();
}
private void UpdateCaption(Status status, MusicData data)
{
statusValue = status;
statusData = data;
UpdateCaption();
}
public int CompareLastPlayed(MusicData x, MusicData y)
{
int ret = Math.Sign(y.LastPlayedTicks - x.LastPlayedTicks);
return(ret != 0 ? ret : string.Compare(x.FileName, y.FileName));
}
public int CompareTitle(MusicData x, MusicData y)
{
int ret = string.Compare(x.Title, y.Title);
return(ret != 0 ? ret : string.Compare(x.FileName, y.FileName));
}
public int CompareFileName(MusicData x, MusicData y)
{
return(string.Compare(x.FileName, y.FileName));
}
private void Play(bool loop)
{
Cursor preCursor = Cursor.Current;
Cursor.Current = Cursors.WaitCursor;
try
{
if (lstMusic.SelectedItem == null)
{
return;
}
MusicData data = (MusicData)lstMusic.SelectedItem;
if (!File.Exists(data.FileName))
{
musicController.Data = null;
UpdateCaption(Status.ReadError, data);
if (Log.Error(
$"再生しようとしたファイルは存在しません。\n{data.FileName}\n\nリストから削除しますか？",
MessageBoxButtons.YesNo,
MessageBoxDefaultButton.Button2) == DialogResult.Yes)
{
removeItemToolStripMenuItem.PerformClick();
}
return;
}
UpdateCaption(Status.Reading, data);
try { musicController.Data = data; }
catch (Exception e)
{
musicController.Data = null;
UpdateCaption(Status.ReadError, data);
if (Log.Error(
$"読み込みに失敗しました！\n読み込みに対応していない形式である可能性があります。\n{data.FileName}\n\nリストから削除しますか？",
e,
MessageBoxButtons.YesNo,
MessageBoxDefaultButton.Button2) == DialogResult.Yes)
{
removeItemToolStripMenuItem.PerformClick();
}
return;
}
UpdateCaption(Status.Preparing, data);
try { musicController.Play(loop); }
catch (Exception e)
{
musicController.Data = null;
UpdateCaption(Status.PlayError, data);
Log.Error("再生に失敗しました！\n" + data.FileName, e);
return;
}
lastPlayed = DateTime.Now;
UpdateCaption((loop ? Status.LoopPlaying : Status.Playing), data);
if (setting.PlayLog)
{
Log.Write(Log.LogType.Play, data.FileName);
}
UpdateStatusBar();
if (setting.Sorting == Sorting.LastPlayed)
{
UpdateList(DirtyLevel.ListItem);
}
}
finally
{
Cursor.Current = preCursor;
}
}