/// <summary>
/// 获取定时播的插入位置。
/// </summary>
/// <param name="startTime"></param>
/// <returns></returns>
private int FindTimingInsertIndex(DateTime startTime)
{
// 获取定时播或定时插播的插入位置。
// 第一个开始时间大于等于startTime的索引（-1表示列表为空或开始时间全部小于startTime）
int index = _playlist.FindFirstIndex((i) => !i.IsSkipped() && i.ScheduleInfo.StartTime >= startTime);
// index==-1是在尾部插入（包含_playlist为空的情况）。
index = index < 0 ? _playlist.Count : index;
return(index);
}
internal static void EnsureNoTimingConflict(this IPlaylist playlist, DateTime startTime, TimeSpan duration)
{
var stopTime = startTime.Add(duration);
var index = playlist.FindFirstIndex((i) =>
(i.ScheduleInfo.ScheduleMode == ScheduleMode.Timing || i.ScheduleInfo.ScheduleMode == ScheduleMode.TimingBreak) &&
!i.IsSkipped() &&
(i.ScheduleInfo.StopTime > startTime && i.ScheduleInfo.StartTime < stopTime)); //!(i.ScheduleInfo.StopTime<=startTime || i.ScheduleInfo.StartTime>=stopTime)
if (index >= 0)
{
var item = playlist[index];
throw new InvalidOperationException(string.Format("与{0}'{1}'之间有时间冲突。",
item.ScheduleInfo.ScheduleMode == ScheduleMode.Timing ? "定时播" : "定时插播", item.Title));
}
}
public static int FindFirstIndex(this IPlaylist playlist, Func <IPlaylistItem, bool> predicate)
{
return(playlist.FindFirstIndex(0, predicate));
}