/// <summary>
/// Submits a request for prefetching to the disk cache.
/// </summary>
/// <param name="uri">The image uri.</param>
/// <param name="token">The cancellation token.</param>
/// <returns>
/// An IDataSource that can safely be ignored.
/// </returns>
public Task PrefetchToDiskCacheAsync(
Uri uri,
CancellationToken token = default(CancellationToken))
{
var taskCompletionSource = new TaskCompletionSource <object>();
var dataSource = PrefetchToDiskCache(ImageRequest.FromUri(uri), null);
var dataSubscriber = new BaseDataSubscriberImpl <object>(
response =>
{
taskCompletionSource.SetResult(null);
return(Task.CompletedTask);
},
response =>
{
Exception error = response.GetFailureCause();
taskCompletionSource.SetException(error);
});
dataSource.Subscribe(dataSubscriber, _handleResultExecutor);
token.Register(() =>
{
dataSource.Close();
taskCompletionSource.TrySetCanceled();
});
return(taskCompletionSource.Task);
}
/// <summary>
/// Set the source URI of the image.
/// </summary>
/// <param name="view">The image view instance.</param>
/// <param name="source">The source URI.</param>
private async void SetUriFromSingleSource(Border view, string source)
{
var imageBrush = (ImageBrush)view.Background;
OnImageStatusUpdate(view, ImageLoadStatus.OnLoadStart, default(ImageMetadata));
try
{
var imagePipeline = ImagePipelineFactory.Instance.GetImagePipeline();
var image = default(BitmapSource);
var uri = new Uri(source);
// Remote images
if (source.StartsWith("http:") || source.StartsWith("https:"))
{
image = await imagePipeline.FetchEncodedBitmapImageAsync(uri);
}
else // Base64 or local images
{
image = await imagePipeline.FetchDecodedBitmapImageAsync(ImageRequest.FromUri(uri));
}
var metadata = new ImageMetadata(source, image.PixelWidth, image.PixelHeight);
OnImageStatusUpdate(view, ImageLoadStatus.OnLoad, metadata);
imageBrush.ImageSource = image;
OnImageStatusUpdate(view, ImageLoadStatus.OnLoadEnd, metadata);
}
catch
{
OnImageFailed(view);
}
}
public async Task TestFetchBase64Image()
{
var data = "data:image/jpeg;base64,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";
var uri = new Uri(data);
var image = await _imagePipeline.FetchDecodedBitmapImageAsync(
ImageRequest.FromUri(uri)).ConfigureAwait(false);
Assert.IsTrue(image.GetType() == typeof(WriteableBitmap));
Assert.IsTrue(_imagePipeline.IsInBitmapMemoryCache(uri));
}
public async Task TestFetchLocalJpeg()
{
var bitmap = await _imagePipeline.FetchDecodedBitmapImageAsync(
ImageRequest.FromUri(LOCAL_JPEG_URL)).ConfigureAwait(false);
await DispatcherHelpers.RunOnDispatcherAsync(() =>
{
Assert.IsTrue(bitmap.PixelWidth != 0);
Assert.IsTrue(bitmap.PixelHeight != 0);
});
}
private async void FetchDecodedImage()
{
try
{
Uri uri = MainPage.GenerateImageUri();
WriteableBitmap bitmap = await _imagePipeline.FetchDecodedBitmapImageAsync(
ImageRequest.FromUri(uri));
UpdateImageGrid(bitmap);
}
catch (Exception)
{
// Invalid uri, try again
FetchDecodedImage();
}
}
public void TestFetchDecodedImageSuccess()
{
var completion = new ManualResetEvent(false);
var dataSource = _imagePipeline.FetchDecodedImage(ImageRequest.FromUri(IMAGE_URL), null);
var dataSubscriber = new BaseDataSubscriberImpl <CloseableReference <CloseableImage> >(
async response =>
{
CloseableReference <CloseableImage> reference = response.GetResult();
if (reference != null)
{
SoftwareBitmap bitmap = ((CloseableBitmap)reference.Get()).UnderlyingBitmap;
try
{
Assert.IsTrue(bitmap.PixelWidth != 0);
Assert.IsTrue(bitmap.PixelHeight != 0);
Assert.IsTrue(_imagePipeline.IsInBitmapMemoryCache(ImageRequest.FromUri(IMAGE_URL)));
Assert.IsTrue(await _imagePipeline.IsInDiskCacheAsync(IMAGE_URL).ConfigureAwait(false));
}
catch (Exception)
{
Assert.Fail();
}
finally
{
CloseableReference <CloseableImage> .CloseSafely(reference);
completion.Set();
}
}
else
{
Assert.Fail();
completion.Set();
}
},
response =>
{
Assert.Fail();
completion.Set();
});
dataSource.Subscribe(dataSubscriber, CallerThreadExecutor.Instance);
completion.WaitOne();
}
public void TestFetchEncodedImageSuccess()
{
var completion = new ManualResetEvent(false);
var dataSource = _imagePipeline.FetchEncodedImage(ImageRequest.FromUri(IMAGE_URL), null);
var dataSubscriber = new BaseDataSubscriberImpl <CloseableReference <IPooledByteBuffer> >(
async response =>
{
CloseableReference <IPooledByteBuffer> reference = response.GetResult();
if (reference != null)
{
IPooledByteBuffer inputStream = reference.Get();
try
{
Assert.IsTrue(inputStream.Size != 0);
Assert.IsTrue(await _imagePipeline.IsInDiskCacheAsync(IMAGE_URL).ConfigureAwait(false));
}
catch (Exception)
{
Assert.Fail();
}
finally
{
CloseableReference <IPooledByteBuffer> .CloseSafely(reference);
completion.Set();
}
}
else
{
Assert.Fail();
completion.Set();
}
},
response =>
{
Assert.Fail();
completion.Set();
});
dataSource.Subscribe(dataSubscriber, CallerThreadExecutor.Instance);
completion.WaitOne();
}
public void TestFetchDecodedImageFail()
{
var completion = new ManualResetEvent(false);
var dataSource = _imagePipeline.FetchDecodedImage(ImageRequest.FromUri(FAILURE_URL), null);
var dataSubscriber = new BaseDataSubscriberImpl <CloseableReference <CloseableImage> >(
response =>
{
Assert.Fail();
completion.Set();
return(Task.CompletedTask);
},
response =>
{
Assert.IsTrue(response.GetFailureCause().GetType() == typeof(IOException));
completion.Set();
});
dataSource.Subscribe(dataSubscriber, CallerThreadExecutor.Instance);
completion.WaitOne();
}
public async Task TestEviction()
{
// Fetch a decoded image
await _imagePipeline.FetchDecodedBitmapImageAsync(
ImageRequest.FromUri(IMAGE_URL)).ConfigureAwait(false);
Assert.IsTrue(_imagePipeline.IsInBitmapMemoryCache(IMAGE_URL));
Assert.IsTrue(await _imagePipeline.IsInDiskCacheAsync(IMAGE_URL).ConfigureAwait(false));
// Evict from memory cache
_imagePipeline.EvictFromMemoryCache(IMAGE_URL);
Assert.IsFalse(_imagePipeline.IsInBitmapMemoryCache(IMAGE_URL));
Assert.IsTrue(await _imagePipeline.IsInDiskCacheAsync(IMAGE_URL).ConfigureAwait(false));
// Evict from disk cache
await _imagePipeline.EvictFromDiskCacheAsync(IMAGE_URL).ConfigureAwait(false);
Assert.IsFalse(_imagePipeline.IsInBitmapMemoryCache(IMAGE_URL));
Assert.IsFalse(await _imagePipeline.IsInDiskCacheAsync(IMAGE_URL).ConfigureAwait(false));
}
public async Task TestCancellingPrefetchToDiskCache1()
{
var failed = false;
var dataSource = _imagePipeline.PrefetchToDiskCache(ImageRequest.FromUri(IMAGE4_URL), null);
var dataSubscriber = new BaseDataSubscriberImpl <object>(
response =>
{
failed = true;
return(Task.CompletedTask);
},
response =>
{
failed = true;
});
dataSource.Subscribe(dataSubscriber, CallerThreadExecutor.Instance);
dataSource.Close();
Assert.IsFalse(failed);
Assert.IsFalse(await _imagePipeline.IsInDiskCacheAsync(IMAGE4_URL).ConfigureAwait(false));
}
public async Task TestCancellingFetchEncodedImage1()
{
var failed = false;
var dataSource = _imagePipeline.FetchEncodedImage(ImageRequest.FromUri(IMAGE3_URL), null);
var dataSubscriber = new BaseDataSubscriberImpl <CloseableReference <IPooledByteBuffer> >(
response =>
{
failed = true;
return(Task.CompletedTask);
},
response =>
{
failed = true;
});
dataSource.Subscribe(dataSubscriber, CallerThreadExecutor.Instance);
dataSource.Close();
Assert.IsFalse(failed);
Assert.IsFalse(await _imagePipeline.IsInDiskCacheAsync(IMAGE3_URL).ConfigureAwait(false));
}
public void TestFetchSendsSuccessToCallbackAfterRedirect2()
{
ManualResetEvent completion = new ManualResetEvent(false);
bool failed = false;
_producerContext = new SettableProducerContext(
ImageRequest.FromUri(SUCCESS_REDIRECT_URL2),
SUCCESS_REDIRECT_URL2,
_producerListener,
new object(),
RequestLevel.FULL_FETCH,
false,
true,
Priority.MEDIUM);
_fetchState = new FetchState(_consumer, _producerContext);
_fetcher.Fetch(
_fetchState,
new NetworkFetcherCallbackImpl(
(response, responseLength) =>
{
Assert.IsTrue(response != null);
Assert.IsTrue(responseLength == -1);
completion.Set();
},
(throwable) =>
{
failed = true;
completion.Set();
},
() =>
{
failed = true;
completion.Set();
}));
// Wait for callback
completion.WaitOne();
Assert.IsFalse(failed);
}
public void TestFetchSendsErrorToCallbackAfterHttpError()
{
ManualResetEvent completion = new ManualResetEvent(false);
bool failed = false;
_producerContext = new SettableProducerContext(
ImageRequest.FromUri(FAILURE_URL),
FAILURE_URL,
_producerListener,
new object(),
RequestLevel.FULL_FETCH,
false,
true,
Priority.MEDIUM);
_fetchState = new FetchState(_consumer, _producerContext);
_fetcher.Fetch(
_fetchState,
new NetworkFetcherCallbackImpl(
(response, responseLength) =>
{
failed = true;
completion.Set();
},
(throwable) =>
{
Assert.IsTrue(throwable.GetType() == typeof(IOException));
completion.Set();
},
() =>
{
failed = true;
completion.Set();
}));
// Wait for callback
completion.WaitOne();
Assert.IsFalse(failed);
}
/// <summary>
/// Gets the file cache path.
/// </summary>
/// <param name="uri">The image uri.</param>
public Task <FileInfo> GetFileCachePath(Uri uri)
{
ICacheKey cacheKey = _cacheKeyFactory.GetEncodedCacheKey(
ImageRequest.FromUri(uri), null);
Task writeTask = _mainBufferedDiskCache.GetWriteToDiskCacheTask(cacheKey);
if (writeTask != default(Task))
{
return(writeTask.ContinueWith(
task =>
{
IBinaryResource resource = ImagePipelineFactory.Instance.GetMainDiskStorageCache().GetResource(cacheKey);
return ((FileBinaryResource)resource).File;
},
TaskContinuationOptions.ExecuteSynchronously));
}
else
{
return(_mainBufferedDiskCache.Contains(cacheKey).ContinueWith(
task =>
{
bool fileExists = task.Result;
if (fileExists)
{
IBinaryResource resource = ImagePipelineFactory.Instance.GetMainDiskStorageCache().GetResource(cacheKey);
return ((FileBinaryResource)resource).File;
}
else
{
return default(FileInfo);
}
},
TaskContinuationOptions.ExecuteSynchronously));
}
}
/// <summary>
/// <para />If you have supplied your own cache key factory
/// when configuring the pipeline, this method may not work
/// correctly.
/// It will only work if the custom factory builds the cache
/// key entirely from the URI. If that is not the case, use
/// EvictFromDiskCache(ImageRequest).
/// </summary>
/// <param name="uri">The uri of the image to evict.</param>
public Task EvictFromDiskCacheAsync(Uri uri)
{
return(EvictFromDiskCacheAsync(ImageRequest.FromUri(uri)));
}
/// <summary>
/// Fetches the encoded BitmapImage.
/// </summary>
/// <param name="uri">The image uri.</param>
/// <param name="token">The cancellation token.</param>
/// <param name="dispatcher">
/// The current view's dispatcher, used to create BitmapImage.
/// </param>
/// <returns>The encoded BitmapImage.</returns>
/// <exception cref="IOException">
/// If the image uri can't be found.
/// </exception>
public Task <BitmapImage> FetchEncodedBitmapImageAsync(
Uri uri,
CancellationToken token = default(CancellationToken),
CoreDispatcher dispatcher = null)
{
var taskCompletionSource = new TaskCompletionSource <BitmapImage>();
var dataSource = FetchEncodedImage(ImageRequest.FromUri(uri), null);
var dataSubscriber = new BaseDataSubscriberImpl <CloseableReference <IPooledByteBuffer> >(
async response =>
{
CloseableReference <IPooledByteBuffer> reference = response.GetResult();
if (reference != null)
{
//----------------------------------------------------------------------
// Phong Cao: InMemoryRandomAccessStream can't write anything < 16KB.
// http://stackoverflow.com/questions/25928408/inmemoryrandomaccessstream-incorrect-behavior
//----------------------------------------------------------------------
IPooledByteBuffer inputStream = reference.Get();
int supportedSize = Math.Max(16 * ByteConstants.KB, inputStream.Size);
// Allocate temp buffer for stream convert
byte[] bytesArray = default(byte[]);
CloseableReference <byte[]> bytesArrayRef = default(CloseableReference <byte[]>);
try
{
bytesArrayRef = _flexByteArrayPool.Get(supportedSize);
bytesArray = bytesArrayRef.Get();
}
catch (Exception)
{
// Allocates the byte array since the pool couldn't provide one
bytesArray = new byte[supportedSize];
}
try
{
inputStream.Read(0, bytesArray, 0, inputStream.Size);
await DispatcherHelpers.CallOnDispatcherAsync(async() =>
{
using (var outStream = new InMemoryRandomAccessStream())
using (var writeStream = outStream.AsStreamForWrite())
{
await writeStream.WriteAsync(bytesArray, 0, supportedSize);
outStream.Seek(0);
BitmapImage bitmapImage = new BitmapImage();
await bitmapImage.SetSourceAsync(outStream).AsTask().ConfigureAwait(false);
taskCompletionSource.SetResult(bitmapImage);
}
},
dispatcher).ConfigureAwait(false);
}
catch (Exception e)
{
taskCompletionSource.SetException(e);
}
finally
{
CloseableReference <IPooledByteBuffer> .CloseSafely(reference);
CloseableReference <byte[]> .CloseSafely(bytesArrayRef);
}
}
else
{
taskCompletionSource.SetResult(null);
}
},
response =>
{
taskCompletionSource.SetException(response.GetFailureCause());
});
dataSource.Subscribe(dataSubscriber, _handleResultExecutor);
token.Register(() =>
{
dataSource.Close();
taskCompletionSource.TrySetCanceled();
});
return(taskCompletionSource.Task);
}
/// <summary>
/// Returns whether the image is stored in the disk cache.
/// </summary>
/// <param name="uri">
/// The uri for the image to be looked up.
/// </param>
/// <returns>
/// true if the image was found in the disk cache,
/// false otherwise.
/// </returns>
public Task <bool> IsInDiskCacheAsync(Uri uri)
{
return(IsInDiskCacheAsync(ImageRequest.FromUri(uri)));
}
/// <summary>
/// Returns whether the image is stored in the disk cache.
///
/// <para />If you have supplied your own cache key factory
/// when configuring the pipeline, this method may not work
/// correctly.
/// It will only work if the custom factory builds the cache
/// key entirely from the URI. If that is not the case, use
/// IsInDiskCache(ImageRequest).
/// </summary>
/// <param name="uri">
/// The uri for the image to be looked up.
/// </param>
/// <returns>
/// true if the image was found in the disk cache,
/// false otherwise.
/// </returns>
public IDataSource <bool> IsInDiskCache(Uri uri)
{
return(IsInDiskCache(ImageRequest.FromUri(uri)));
}
