internal MediaStream(MediaStreamManager manager, WebFile file, int id, bool linger)
{
this.id = id;
this.file = file;
this.manager = manager;
this.currentReadOperationWaitHandle = new AutoResetEvent(false);
manager.NewDataAvailable += manager_NewDataAvailable;
this.linger = linger;
}
internal MediaStream(MediaStreamManager manager, WebFile file, int id, bool linger)
{
this.id = id;
this.file = file;
this.manager = manager;
this.currentReadOperationWaitHandle = new AutoResetEvent(false);
manager.NewDataAvailable += manager_NewDataAvailable;
this.linger = linger;
}
protected override void Dispose(bool disposing)
{
if (disposing && manager != null && prebuiltException == null)
{
if (Interlocked.Exchange(ref disposed, 1) == 0)
{
manager.NotifyConsumerRemoved(id, linger);
manager.NewDataAvailable -= manager_NewDataAvailable;
readNotification.Set();
#if NET35
readNotification.Close();
#else
readNotification.Dispose();
#endif
}
manager = null;
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (disposing && manager != null && prebuiltException == null)
{
if (Interlocked.Exchange(ref disposed, 1) == 0)
{
manager.NotifyConsumerRemoved(id, linger);
manager.NewDataAvailable -= manager_NewDataAvailable;
readNotification.Set();
#if NET35
readNotification.Close();
#else
readNotification.Dispose();
#endif
}
manager = null;
}
base.Dispose(disposing);
}
public virtual void ResetError()
{
manager = null;
#if DESKTOP
prefetchingTask = null;
var z = new LazyUri(Url);
var cache = Caching.GetFileCachePath(z);
if (cache != null)
{
Caching.DeleteFileCacheAsync(z).FireAndForget();
}
#endif
OnChanged();
}
internal async Task<Stream> OpenStreamAsync(bool synchronous, bool skipCache = false, bool linger = true)
{
var url = new LazyUri(Url);
await Utils.CheckLocalFileAccessAsync(url);
var mgr = this.manager;
Func<long, Task<HttpResponseMessage>> createStream = null;
#if !STANDALONE && DESKTOP
if (Caching.AzureApi != null && (mgr == null || !mgr.IsAlive) && !skipCache)
{
var container = Caching.GetAzureContainer(url);
HashSet<string> files = null;
if (synchronous)
{
ObjectManager.SynchronizationContext.Send(async () =>
{
files = await Caching.GetAzureCachedFiles(container);
});
}
else
{
await ObjectManager.SynchronizationContext.SendAsync(async () =>
{
files = await Caching.GetAzureCachedFiles(container);
});
}
var name = Caching.GetFileCachePath(url);
if (files.Contains(name))
{
createStream = offset => Caching.GetAzureResponseAsync(container, name, offset, this);
}
} else
#endif
if (
#if !STANDALONE && DESKTOP
Caching.AzureApi == null &&
#endif
!skipCache)
{
#if DESKTOP
var cache = Caching.GetFileCachePath(url);
if (File.Exists(cache))
{
var str = new FileStream(cache, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete);
if (str.Length == 0)
{
var errfile = Path.ChangeExtension(cache, ".err");
if (File.Exists(errfile))
{
str.Dispose();
var errlines = File.ReadAllText(errfile);
return new MediaStream(MediaStream.ExceptionFromCachedResponse(errlines), this);
}
}
Sanity.AssertFastReadByte(str);
return str;
}
#endif
}
lock (this)
{
if (manager == null)
manager = new MediaStreamManager(createStream ?? GetResponseAsync, true);
var stream = manager.TryCreateStream(this, 0, linger);
if (stream == null)
{
manager = new MediaStreamManager(createStream ?? GetResponseAsync, true);
stream = manager.TryCreateStream(this, 0, linger);
Sanity.Assert(stream != null);
}
Sanity.AssertFastReadByte(stream);
return stream;
}
}
internal void SaveResponseInfo(HttpResponseMessage partialDownload, bool continueDownload)
{
if (partialDownload != null)
{
#if NET35
var len = partialDownload.ContentLength == -1 ? null : (long?)partialDownload.ContentLength;
#else
var len = partialDownload.Content.Headers.ContentLength;
#endif
if (len != null) Size = new FileSize(len.Value);
// HACK: ignore content disposition in .net 35
#if !NET35
var contentDisposition = partialDownload.Content.Headers.ContentDisposition;
if (contentDisposition != null) contentDispositionFileName = contentDisposition.FileName;
#endif
contentTypeExtension = HttpUtils.GetFileExtensionFromMime(
#if NET35
HttpUtils.GetMimeFromContentType(partialDownload.Headers["Content-Type"])
#else
partialDownload.Content.Headers.ContentType?.MediaType
#endif
);
if (continueDownload && (manager == null || !manager.IsAlive))
{
this.partialDownload = partialDownload;
manager = new MediaStreamManager(GetResponseAsync, true);
}
else
{
partialDownload.AbortAndDispose();
}
OnChanged();
}
}
