/// <summary>
/// 节目播放
/// </summary>
public override void ProgramPlay()
{
int disDelay = 0;//播放延时
while (!StopBit)
{
if (PauseBit)
{
Thread.Sleep(1000);
continue;
}
if (programRegion.MediaList.Count > 0)
{
ProgramRegionMedia media = playList[this.PlayIndex];
if (PresentUIElement == null)//未加载组件
{
MediaInfo mediaInfo = mediaInfoService.QueryableToEntity(x => x.id == media.media_id);
if (mediaInfo != null)
{
string mediaPath = LocalPath + mediaInfo.serial_number;
FileType mediaType = (FileType)Enum.Parse(typeof(FileType), mediaInfo.media_type, true);
_logWrite.WriteLog($"加入组件");
switch (mediaType)
{
case FileType.image:
canvasLayout.Dispatcher.Invoke(new Action(() => {
PresentUIElement = canvasLayout.AddImageComponent(mediaPath, programRegion, false);
}));
break;
case FileType.pdf:
canvasLayout.Dispatcher.Invoke(new Action(() =>
{
PresentUIElement = canvasLayout.AddPdfComponent(mediaPath, programRegion, false);
}));
break;
case FileType.video:
canvasLayout.Dispatcher.Invoke(new Action(() =>
{
PresentUIElement = canvasLayout.AddMediaComponent(mediaPath, programRegion, false);
}));
break;
case FileType.html:
canvasLayout.Dispatcher.Invoke(new Action(() =>
{
PresentUIElement = canvasLayout.AddWebComponent(mediaPath, programRegion, false);
}));
break;
case FileType.ppt:
canvasLayout.Dispatcher.Invoke(new Action(() =>
{
PresentUIElement = canvasLayout.AddPPTComponent(mediaPath, programRegion, false);
}));
break;
default:
break;
}
disDelay = 0;
this.PresentPlayObject = mediaInfo;//当前播放的对象
}
else
{
_logWrite.WriteLog($"查找媒体资源失败，media.media_id={media.media_id}");
}
}
else//播放组件已加载，开始计时播放
{
++media.play_second_count;//计时累计
if (media.play_second > 0 && media.play_second_count >= media.play_second)//时间到达
{
media.play_second_count = 0;
PlayIndex += 1;
LastUIElement = PresentUIElement;//上一个播放组件记忆
this.PresentUIElement.DisposeResource();
this.PresentUIElement = null; //当前播放的组件清除
this.PresentPlayObject = null; //当前播放的对象清除
}
if (PlayIndex >= programRegion.MediaList.Count)
{
PlayIndex = 0;//序号回滚
}
}
if (PresentUIElement != null && PresentUIElement.Visibility == Visibility.Hidden)
{
++disDelay;
canvasLayout.Dispatcher.Invoke(new Action(() =>
{
if (disDelay >= 3 || LastUIElement == null)
{
if (LastUIElement != null && canvasLayout.Children.Contains(LastUIElement))
{
LastUIElement.DisposeResource(); //资源释放
canvasLayout.Children.Remove(LastUIElement); //移除上一次加入组件
_logWrite.WriteLog($"播放组件移除");
LastUIElement = null;
}
PresentUIElement.SetVisible(true);
}
}));
}
}
Thread.Sleep(1000);
}
}