void PlayAd(Advertisement ad, TimeSpan?syncToPosition)
{
HandledAds.Add(ad);
PlayAdAsync(ad, cts.Token);
if (syncToPosition.HasValue)
{
SyncMainContent(syncToPosition.Value);
}
}
/// <summary>
/// Called when the media has opened.
/// Responsible for skipping ads before the startup position.
/// </summary>
protected virtual void OnMediaOpened()
{
// remove all ads before the start position
if (MediaPlayer.StartupPosition.HasValue)
{
HandledAds.AddRange(Advertisements.OfType <PrerollAdvertisement>().Cast <Advertisement>());
HandledAds.AddRange(Advertisements.OfType <MidrollAdvertisement>().Where(a => a.Time < MediaPlayer.StartupPosition.Value).Cast <Advertisement>());
}
}
async Task PlayAdsOfType <T>(CancellationToken cancellationToken) where T : Advertisement
{
var adsToPlay = EligableAds.OfType <T>().Where(a => a.Source != null).ToList();
HandledAds.AddRange(adsToPlay.Cast <Advertisement>());
if (adsToPlay.Any())
{
await PlayAds(adsToPlay.Cast <Advertisement>(), cancellationToken);
}
}
void MediaPlayer_MediaOpened(object sender, RoutedEventArgs e)
{
HandledAds.Clear();
InitializeAdvertisements();
OnMediaOpened();
if (PreloadTime.HasValue)
{
// schedule the first postroll for preloading (x seconds before the duration)
var postroll = Advertisements.FirstOrDefault(a => a is PostrollAdvertisement);
if (postroll != null)
{
MediaPlayer.Markers.Add(new TimelineMarker()
{
Type = MarkerType_Preload, Text = postroll.Id, Time = TimeSpanExtensions.Max(TimeSpan.FromMilliseconds(1), MediaPlayer.Duration.Subtract(PreloadTime.Value))
}); // clamp to 1 ms
}
}
}
internal async Task PlayStartupAds(CancellationToken c)
{
if (MediaPlayer.AllowMediaStartingDeferrals)
{
IList <Advertisement> startupAds;
if (MediaPlayer.StartupPosition.HasValue)
{
startupAds = EligableAds
.OfType <MidrollAdvertisement>()
.Where(a => a.Source != null && a.Time == MediaPlayer.StartupPosition.Value)
.Cast <Advertisement>()
.ToList();
}
else
{
startupAds = EligableAds
.OfType <PrerollAdvertisement>()
.Where(a => a.Source != null)
.Cast <Advertisement>()
.ToList();
}
if (startupAds.Any())
{
try
{
using (var adCts = CancellationTokenSource.CreateLinkedTokenSource(c, cts.Token))
{
HandledAds.AddRange(startupAds);
await PlayAds(startupAds, adCts.Token);
}
}
catch { /* ignore */ }
}
}
}
void MediaPlayer_MediaClosed(object sender, RoutedEventArgs e)
{
Advertisements.Clear();
HandledAds.Clear();
}
