/// <summary>
/// This method is invoked when the MediaCache has downloaded several video and audio chunks for the asset
/// associated with the manifestUri. The progress value is defined with value percent.
/// From this method it's possible to monitor the download of the video and audio chunks.
/// </summary>
private void Cache_DownloadProgress(MediaCache sender, Uri manifestUri, uint percent)
{
ulong duration = mediaCache.GetDuration(manifestUri) / 10000000;
LogMessage("Download progress: " + percent.ToString() + "%" +
" Download bitrate: " + sender.GetCurrentBitrate(manifestUri).ToString() + "b/s " +
" Audio chunks: " + sender.GetSavedAudioChunksCount(manifestUri).ToString() + "/" + sender.GetAudioChunksCount(manifestUri).ToString() +
" Video chunks: " + sender.GetSavedVideoChunksCount(manifestUri).ToString() + "/" + sender.GetVideoChunksCount(manifestUri).ToString() +
" Size on disk: " + sender.GetCurrentMediaCacheSize(manifestUri).ToString() + "/" + sender.GetExpectedSize(manifestUri).ToString() +
" Remaining time: " + sender.GetRemainingDowloadTime(manifestUri).ToString() + " seconds " +
" Asset duration: " + duration.ToString() + " seconds " +
" for manifest: " + manifestUri.ToString());
}
/// <summary>
/// This method is invoked when the status of an asset in the MediaCache has changed.
/// Parameter: The status of the asset:
/// - Initialized
/// - DownloadingManifest
/// - ManifestDownloaded
/// - DownloadingChunks
/// - AssetPlayable (for Progressive Download only - Not applicable for DownloadToGo)
/// - ChunksDownloaded
/// - Errorxxxxx
/// </summary>
private async void Cache_StatusProgress(MediaCache sender, Uri manifestUri, AssetStatus assetStatus)
{
LogMessage("Download status: " + assetStatus.ToString() + " for manifest: " + manifestUri.ToString());
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal,
async () =>
{
if (assetStatus == AssetStatus.ChunksDownloaded)
{
// if the asset is fully downloaded and the asset is protected with PlayReady, the PlayReady License can be acquired.
// The PlayReady License is automatically acquired by the MediaCache after calling mediaCache.StartDownload
// The step below is normally not required for persistent license
if (mediaCache.IsAssetProtected(manifestUri))
{
LogMessage("As the downloaded content is protected License Acquisition required, LicenseUrl: " + (!string.IsNullOrEmpty(PlayReadyLicenseUrl) ? PlayReadyLicenseUrl : "null") + " CustomData: " + PlayReadyChallengeCustomData);
bool result = await mediaCache.GetPlayReadyLicense(manifestUri, (!string.IsNullOrEmpty(PlayReadyLicenseUrl) ? new Uri(PlayReadyLicenseUrl) : null), PlayReadyChallengeCustomData);
if (result == true)
LogMessage("Acquisition License successful");
else
LogMessage("Acquisition License failed");
}
}
UpdateControls();
});
}
/// <summary>
/// This method initialize the Media Cache
/// </summary>
private async System.Threading.Tasks.Task<bool> InitializeCache()
{
bool result = false;
if (mediaCache != null)
{
mediaCache.StatusProgressEvent -= Cache_StatusProgress;
mediaCache.DownloadProgressEvent -= Cache_DownloadProgress;
mediaCache = null;
}
//
// Create the Media Cache to download Smooth Streaming Asset
//
mediaCache = new MediaCache();
if (mediaCache != null)
{
//
// Initialize the Media Cache
//
// "AssetCache" is the name of the directory in the Isolated Storage where the video and audio chunks will be recorded
// Max Download Session = 5, it's the maximum number of simultaneous download session
// Max Memory Buffer size = 64 MB, it's the maximum size of the memory buffer, when the buffer size is over this limit the video and audio chunks will be stored in the isolated storage
// Max Downloaded Assets = 100, the maximum number of assets which can be stored on disk
// Max Error = 20, when the number of http error is over this limit, the download thread associated with the asset is cancelled
// AutoStartDownload, if true the download thread will start automatically after a resume
//
result = await mediaCache.Initialize("AssetsCache",
// Max Download Session
5,
// Max Memory buffer Size per session
256000,
// Max downloaded Assets
100,
// Max Error
20,
//AutoStartDownload
// Set Auto start download when launching the application
// The download thread will be automatically launched if the asset is not completely downloaded
true
);
if (result)
{
mediaCache.StatusProgressEvent += Cache_StatusProgress;
mediaCache.DownloadProgressEvent += Cache_DownloadProgress;
ulong asize = await mediaCache.GetAvailableSize();
ulong csize = await mediaCache.GetCacheSize();
LogMessage("Cache Initialized");
LogMessage("Cache available size: " + asize.ToString() + " Bytes");
LogMessage("Cache current size: " + csize.ToString() + " Bytes");
}
}
return result;
}
