public WasapiCS.CursorLocation GetCursorLocation(WasapiCS.PcmDataUsageType t)
{
return(mWasapi.GetPlayCursorPosition(t));
}
void OnBackgroundPlay_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
if (mBackgroundPlay.CancellationPending)
{
// アプリ終了。
return;
}
// 再生中PCMデータ(または一時停止再開時再生予定PCMデータ等)の再生位置情報を画面に表示する。
WasapiCS.PcmDataUsageType usageType = WasapiCS.PcmDataUsageType.NowPlaying;
int pcmDataId = mPlaybackController.GetPcmDataId(WasapiCS.PcmDataUsageType.NowPlaying);
if (pcmDataId < 0)
{
pcmDataId = mPlaybackController.GetPcmDataId(WasapiCS.PcmDataUsageType.PauseResumeToPlay);
usageType = WasapiCS.PcmDataUsageType.PauseResumeToPlay;
}
if (pcmDataId < 0)
{
pcmDataId = mPlaybackController.GetPcmDataId(WasapiCS.PcmDataUsageType.SpliceNext);
usageType = WasapiCS.PcmDataUsageType.SpliceNext;
}
string playingTimeString = string.Empty;
if (pcmDataId < 0)
{
playingTimeString = PlaybackTime.PLAYING_TIME_UNKNOWN;
}
else
{
if (mDataGridPlayList.SelectedIndex != pcmDataId)
{
mDataGridPlayList.SelectedIndex = pcmDataId;
mDataGridPlayList.ScrollIntoView(pcmDataId);
}
var playPos = mPlaybackController.GetCursorLocation(usageType);
var stat = mPlaybackController.GetSessionStatus();
long now = DateTime.Now.Ticks;
if (now - mLastSliderPositionUpdateTime > SLIDER_UPDATE_TICKS)
{
// スライダー位置の更新。0.5秒に1回
mSlider1.Maximum = playPos.TotalFrameNum;
if (!mSliderSliding || playPos.TotalFrameNum <= mSlider1.Value)
{
mSlider1.Value = playPos.PosFrame;
}
mLastSliderPositionUpdateTime = now;
}
playingTimeString = PlaybackTime.CreateDisplayString(
(int)(playPos.PosFrame / stat.DeviceSampleRate),
(int)(playPos.TotalFrameNum / stat.DeviceSampleRate));
}
// 再生時間表示の再描画をできるだけ抑制する。負荷が減る効果がある
if (playingTimeString != string.Empty && 0 != string.Compare((string)mLabelPlayingTime.Content, playingTimeString))
{
mLabelPlayingTime.Content = playingTimeString;
}
else
{
//System.Console.WriteLine("time disp update skipped");
}
}
public int GetPcmDataId(WasapiCS.PcmDataUsageType t)
{
return(mWasapi.GetPcmDataId(t));
}
