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Simplify creation of Photos Framework NSURLs in ASMultiplexImageNode

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This commit is contained in:
Adlai Holler
2015-10-02 12:44:21 -07:00
parent 5f49e0f67d
commit de1f9788f3
5 changed files with 65 additions and 39 deletions
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46
AsyncDisplayKit/ASMultiplexImageNode.mm
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@@ -157,7 +157,8 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
_cache = cache;
_downloader = downloader;
_imageManager = PHImageManager.defaultManager;
return self;
}
@@ -455,7 +456,7 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
}];
}
// Likewise, if it's a iOS 8 Photo asset, we need to fetch it accordingly.
else if (ASPhotosFrameworkImageRequest *request = nextImageURL.asyncdisplaykit_photosRequest) {
else if (ASPhotosFrameworkImageRequest *request = [ASPhotosFrameworkImageRequest requestWithURL:nextImageURL]) {
[self _loadPHAssetWithRequest:request identifier:nextImageIdentifier completion:^(UIImage *image, NSError *error) {
ASMultiplexImageNodeCLogDebug(@"[%p] Acquired next image (%@) from Photos Framework", weakSelf, nextImageIdentifier);
finishedLoadingBlock(image, nextImageIdentifier, error);
@@ -529,25 +530,27 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
PHAsset *imageAsset = [assetFetchResult firstObject];
PHImageRequestOptions *options = [request.options copy];
// We don't support opportunistic delivery – one request, one image.
if (options.deliveryMode == PHImageRequestOptionsDeliveryModeOpportunistic) {
options.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
}
if (options.deliveryMode == PHImageRequestOptionsDeliveryModeHighQualityFormat) {
// Without this flag the result will be delivered on the main queue, which is pointless
// But synchronous -> HighQualityFormat so we only use it if high quality format is specified
options.synchronous = YES;
}
[[PHImageManager defaultManager] requestImageForAsset:imageAsset
targetSize:request.targetSize
contentMode:request.contentMode
options:options
resultHandler:^(UIImage *image, NSDictionary *info) {
if (NSThread.isMainThread) {
dispatch_async(dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0), ^{
completionBlock(image, info[PHImageErrorKey]);
});
} else {
completionBlock(image, info[PHImageErrorKey]);
}
}];
[self.imageManager requestImageForAsset:imageAsset targetSize:request.targetSize contentMode:request.contentMode options:options resultHandler:^(UIImage *image, NSDictionary *info) {
if (NSThread.isMainThread) {
dispatch_async(dispatch_get_global_queue(QOS_CLASS_DEFAULT, 0), ^{
completionBlock(image, info[PHImageErrorKey]);
});
} else {
completionBlock(image, info[PHImageErrorKey]);
}
}];
});
}
@@ -648,3 +651,16 @@ typedef void(^ASMultiplexImageLoadCompletionBlock)(UIImage *image, id imageIdent
}
@end
@implementation NSURL (ASPhotosFrameworkURLs)
+ (NSURL *)URLWithAssetLocalIdentifier:(NSString *)assetLocalIdentifier targetSize:(CGSize)targetSize contentMode:(PHImageContentMode)contentMode options:(PHImageRequestOptions *)options
{
ASPhotosFrameworkImageRequest *request = [[ASPhotosFrameworkImageRequest alloc] initWithAssetIdentifier:assetLocalIdentifier];
request.options = options;
request.contentMode = contentMode;
request.targetSize = targetSize;
return request.url;
}
@end