mirror of
https://github.com/danog/Telegram.git
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380 lines
15 KiB
Objective-C
380 lines
15 KiB
Objective-C
#import "TGFileThumbnailDataSource.h"
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#import "TGStringUtils.h"
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#import "TGWorkerPool.h"
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#import "TGWorkerTask.h"
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#import "TGMediaPreviewTask.h"
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#import "TGMemoryImageCache.h"
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#import "TGImageUtils.h"
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#import "TGStringUtils.h"
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#import "TGRemoteImageView.h"
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#import "TGImageBlur.h"
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#import "UIImage+TG.h"
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#import "NSObject+TGLock.h"
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#import "TGMediaStoreContext.h"
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#import <AVFoundation/AVFoundation.h>
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static TGWorkerPool *workerPool()
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{
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static TGWorkerPool *instance = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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instance = [[TGWorkerPool alloc] init];
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});
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return instance;
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}
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static ASQueue *taskManagementQueue()
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{
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static ASQueue *queue = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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queue = [[ASQueue alloc] initWithName:"org.telegram.fileThumbnailTaskManagementQueue"];
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});
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return queue;
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}
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@implementation TGFileThumbnailDataSource
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+ (void)load
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{
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@autoreleasepool
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{
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[TGImageDataSource registerDataSource:[[self alloc] init]];
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}
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}
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- (bool)canHandleUri:(NSString *)uri
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{
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return [uri hasPrefix:@"file-thumbnail://"];
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}
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- (bool)canHandleAttributeUri:(NSString *)uri
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{
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return [uri hasPrefix:@"file-thumbnail://"];
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}
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- (id)loadDataAsyncWithUri:(NSString *)uri progress:(void (^)(float))progress completion:(void (^)(TGDataResource *))completion
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{
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TGMediaPreviewTask *previewTask = [[TGMediaPreviewTask alloc] init];
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[taskManagementQueue() dispatchOnQueue:^
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{
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TGWorkerTask *workerTask = [[TGWorkerTask alloc] initWithBlock:^(bool (^isCancelled)())
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{
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TGDataResource *result = [TGFileThumbnailDataSource _performLoad:uri isCancelled:isCancelled];
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if (result != nil && progress != nil)
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progress(1.0f);
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if (isCancelled != nil && isCancelled())
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return;
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if (completion != nil)
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completion(result != nil ? result : [TGFileThumbnailDataSource resultForUnavailableImage]);
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}];
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if ([TGFileThumbnailDataSource _isDataLocallyAvailableForUri:uri])
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{
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[previewTask executeWithWorkerTask:workerTask workerPool:workerPool()];
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}
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else
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{
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NSDictionary *args = [TGStringUtils argumentDictionaryInUrlString:[uri substringFromIndex:@"file-thumbnail://?".length]];
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if ([args[@"legacy-thumbnail-cache-url"] respondsToSelector:@selector(characterAtIndex:)])
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{
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static NSString *filesDirectory = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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filesDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true)[0] stringByAppendingPathComponent:@"files"];
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});
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NSString *fileDirectoryName = nil;
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if (args[@"id"] != nil)
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fileDirectoryName = [[NSString alloc] initWithFormat:@"%" PRIx64 "", (int64_t)[args[@"id"] longLongValue]];
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else
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fileDirectoryName = [[NSString alloc] initWithFormat:@"local%" PRIx64 "", (int64_t)[args[@"local-id"] longLongValue]];
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NSString *fileDirectory = [filesDirectory stringByAppendingPathComponent:fileDirectoryName];
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[[NSFileManager defaultManager] createDirectoryAtPath:fileDirectory withIntermediateDirectories:true attributes:nil error:nil];
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NSString *temporaryThumbnailImagePath = [fileDirectory stringByAppendingPathComponent:@"file-thumb.jpg"];
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[previewTask executeWithTargetFilePath:temporaryThumbnailImagePath uri:args[@"legacy-thumbnail-cache-url"] completion:^(bool success)
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{
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if (success)
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[previewTask executeWithWorkerTask:workerTask workerPool:workerPool()];
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else
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{
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if (completion != nil)
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completion([TGFileThumbnailDataSource resultForUnavailableImage]);
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}
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} workerTask:workerTask];
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}
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else
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{
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if (completion != nil)
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completion([TGFileThumbnailDataSource resultForUnavailableImage]);
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}
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}
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}];
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return previewTask;
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}
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+ (bool)_isDataLocallyAvailableForUri:(NSString *)uri
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{
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NSDictionary *args = [TGStringUtils argumentDictionaryInUrlString:[uri substringFromIndex:@"file-thumbnail://?".length]];
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if ((![args[@"id"] respondsToSelector:@selector(longLongValue)] && [args[@"local-id"] respondsToSelector:@selector(longLongValue)]) || ![args[@"width"] respondsToSelector:@selector(intValue)] || ![args[@"height"] respondsToSelector:@selector(intValue)] || ![args[@"renderWidth"] respondsToSelector:@selector(intValue)] || ![args[@"renderHeight"] respondsToSelector:@selector(intValue)] || ![args[@"file-name"] respondsToSelector:@selector(characterAtIndex:)])
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{
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return false;
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}
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static NSString *filesDirectory = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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filesDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true)[0] stringByAppendingPathComponent:@"files"];
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});
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NSString *fileDirectoryName = nil;
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if (args[@"id"] != nil)
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fileDirectoryName = [[NSString alloc] initWithFormat:@"%" PRIx64 "", (int64_t)[args[@"id"] longLongValue]];
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else
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fileDirectoryName = [[NSString alloc] initWithFormat:@"local%" PRIx64 "", (int64_t)[args[@"local-id"] longLongValue]];
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NSString *fileDirectory = [filesDirectory stringByAppendingPathComponent:fileDirectoryName];
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CGSize size = CGSizeMake([args[@"width"] intValue], [args[@"height"] intValue]);
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CGSize renderSize = CGSizeMake([args[@"renderWidth"] intValue], [args[@"renderHeight"] intValue]);
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NSString *thumbnailPath = [fileDirectory stringByAppendingPathComponent:[[NSString alloc] initWithFormat:@"thumbnail-%dx%d-%dx%d.jpg", (int)size.width, (int)size.height, (int)renderSize.width, (int)renderSize.height]];
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if ([[NSFileManager defaultManager] fileExistsAtPath:thumbnailPath isDirectory:NULL])
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return true;
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NSString *temporaryThumbnailImagePath = [fileDirectory stringByAppendingPathComponent:@"file-thumb.jpg"];
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if ([[NSFileManager defaultManager] fileExistsAtPath:temporaryThumbnailImagePath])
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return true;
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NSString *filePath = [fileDirectory stringByAppendingPathComponent:args[@"file-name"]];
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if ([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:NULL])
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return true;
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if ([args[@"legacy-thumbnail-cache-url"] respondsToSelector:@selector(characterAtIndex:)])
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{
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NSString *legacyThumbnailImagePath = [[TGRemoteImageView sharedCache] pathForCachedData:args[@"legacy-thumbnail-cache-url"]];
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if ([[NSFileManager defaultManager] fileExistsAtPath:legacyThumbnailImagePath isDirectory:NULL])
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return true;
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}
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return false;
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}
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- (void)cancelTaskById:(id)taskId
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{
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[taskManagementQueue() dispatchOnQueue:^
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{
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if ([taskId isKindOfClass:[TGMediaPreviewTask class]])
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{
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TGMediaPreviewTask *previewTask = taskId;
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[previewTask cancel];
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}
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}];
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}
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+ (TGDataResource *)resultForUnavailableImage
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{
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static TGDataResource *imageData = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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imageData = [[TGDataResource alloc] initWithImage:TGAverageColorImage([UIColor whiteColor]) decoded:true];
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});
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return imageData;
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}
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- (id)loadAttributeSyncForUri:(NSString *)uri attribute:(NSString *)attribute
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{
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if ([attribute isEqualToString:@"placeholder"])
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{
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UIImage *reducedImage = [[TGMediaStoreContext instance] mediaImage:uri attributes:nil];
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if (reducedImage != nil)
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return reducedImage;
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NSNumber *averageColor = [[TGMediaStoreContext instance] mediaImageAverageColor:uri];
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if (averageColor != nil)
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{
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UIImage *image = TGAverageColorImage(UIColorRGB([averageColor intValue]));
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return image;
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}
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static UIImage *placeholder = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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placeholder = TGAverageColorImage([UIColor whiteColor]);
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});
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return placeholder;
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}
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return nil;
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}
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- (TGDataResource *)loadDataSyncWithUri:(NSString *)uri canWait:(bool)canWait
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{
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if (uri == nil)
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return nil;
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UIImage *cachedImage = [[TGMediaStoreContext instance] mediaImage:uri attributes:nil];
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if (cachedImage != nil)
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return [[TGDataResource alloc] initWithImage:cachedImage decoded:true];
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if (!canWait)
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return nil;
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return [TGFileThumbnailDataSource _performLoad:uri isCancelled:nil];
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}
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+ (TGDataResource *)_performLoad:(NSString *)uri isCancelled:(bool (^)())isCancelled
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{
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if (isCancelled && isCancelled())
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return nil;
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NSDictionary *args = [TGStringUtils argumentDictionaryInUrlString:[uri substringFromIndex:@"file-thumbnail://?".length]];
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if ((![args[@"id"] respondsToSelector:@selector(longLongValue)] && ![args[@"local-id"] respondsToSelector:@selector(longLongValue)]) || ![args[@"width"] respondsToSelector:@selector(intValue)] || ![args[@"height"] respondsToSelector:@selector(intValue)] || ![args[@"renderWidth"] respondsToSelector:@selector(intValue)] || ![args[@"renderHeight"] respondsToSelector:@selector(intValue)] || ![args[@"file-name"] respondsToSelector:@selector(characterAtIndex:)])
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{
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return nil;
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}
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static NSString *filesDirectory = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^
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{
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filesDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true)[0] stringByAppendingPathComponent:@"files"];
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});
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NSString *fileDirectoryName = nil;
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if (args[@"id"] != nil)
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fileDirectoryName = [[NSString alloc] initWithFormat:@"%" PRIx64 "", (int64_t)[args[@"id"] longLongValue]];
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else
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fileDirectoryName = [[NSString alloc] initWithFormat:@"local%" PRIx64 "", (int64_t)[args[@"local-id"] longLongValue]];
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NSString *fileDirectory = [filesDirectory stringByAppendingPathComponent:fileDirectoryName];
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CGSize size = CGSizeMake([args[@"width"] intValue], [args[@"height"] intValue]);
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CGSize renderSize = CGSizeMake([args[@"renderWidth"] intValue], [args[@"renderHeight"] intValue]);
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NSString *thumbnailPath = [fileDirectory stringByAppendingPathComponent:[[NSString alloc] initWithFormat:@"thumbnail-%dx%d-%dx%d.jpg", (int)size.width, (int)size.height, (int)renderSize.width, (int)renderSize.height]];
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UIImage *thumbnailSourceImage = [[UIImage alloc] initWithContentsOfFile:thumbnailPath];
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bool lowQualityThumbnail = false;
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if (thumbnailSourceImage == nil)
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{
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[[NSFileManager defaultManager] createDirectoryAtPath:fileDirectory withIntermediateDirectories:true attributes:nil error:nil];
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NSString *filePath = [fileDirectory stringByAppendingPathComponent:args[@"file-name"]];
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NSString *temporaryThumbnailImagePath = [fileDirectory stringByAppendingPathComponent:@"file-thumb.jpg"];
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UIImage *image = nil;
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if ([[NSFileManager defaultManager] fileExistsAtPath:filePath isDirectory:NULL])
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{
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image = [[UIImage alloc] initWithContentsOfFile:filePath];
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if (image == nil)
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image = [[UIImage alloc] initWithContentsOfFile:temporaryThumbnailImagePath];
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}
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else
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{
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image = [[UIImage alloc] initWithContentsOfFile:temporaryThumbnailImagePath];
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if (image == nil)
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{
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if ([args[@"legacy-thumbnail-cache-url"] respondsToSelector:@selector(characterAtIndex:)])
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{
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NSString *legacyThumbnailImagePath = [[TGRemoteImageView sharedCache] pathForCachedData:args[@"legacy-thumbnail-cache-url"]];
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image = [[UIImage alloc] initWithContentsOfFile:legacyThumbnailImagePath];
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if (image != nil)
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{
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[[NSFileManager defaultManager] copyItemAtPath:legacyThumbnailImagePath toPath:temporaryThumbnailImagePath error:nil];
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}
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}
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}
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lowQualityThumbnail = true;
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}
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if (image != nil)
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{
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const float cacheFactor = 0.85f;
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CGSize cachedImageSize = CGSizeMake(ceilf(size.width * cacheFactor), ceilf(size.height * cacheFactor));
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CGSize cachedRenderSize = CGSizeMake(ceilf(renderSize.width * cacheFactor), ceilf(renderSize.height * cacheFactor));
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UIGraphicsBeginImageContextWithOptions(cachedImageSize, true, 2.0f);
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CGRect imageRect = CGRectMake((cachedImageSize.width - cachedRenderSize.width) / 2.0f, (cachedImageSize.height - cachedRenderSize.height) / 2.0f, cachedRenderSize.width, cachedRenderSize.height);
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[image drawInRect:imageRect blendMode:kCGBlendModeCopy alpha:1.0f];
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thumbnailSourceImage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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if (thumbnailSourceImage != nil && !lowQualityThumbnail)
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{
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NSData *thumbnailSourceData = UIImageJPEGRepresentation(thumbnailSourceImage, 0.8f);
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[thumbnailSourceData writeToFile:thumbnailPath atomically:false];
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}
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}
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}
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else
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{
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UIGraphicsBeginImageContextWithOptions(size, true, 2.0f);
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CGRect imageRect = CGRectMake(0.0f, 0.0f, size.width, size.height);
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[thumbnailSourceImage drawInRect:imageRect blendMode:kCGBlendModeCopy alpha:1.0f];
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thumbnailSourceImage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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}
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if (thumbnailSourceImage != nil)
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{
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UIImage *thumbnailImage = nil;
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NSNumber *averageColor = [[TGMediaStoreContext instance] mediaImageAverageColor:uri];
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bool needsAverageColor = averageColor == nil;
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uint32_t averageColorValue = [averageColor intValue];
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if (lowQualityThumbnail)
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thumbnailImage = TGBlurredFileImage(thumbnailSourceImage, size, needsAverageColor ? &averageColorValue : NULL);
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else
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thumbnailImage = TGLoadedFileImage(thumbnailSourceImage, size, needsAverageColor ? &averageColorValue : NULL);
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if (thumbnailImage != nil)
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{
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[[TGMediaStoreContext instance] setMediaImageAverageColorForKey:uri averageColor:@(averageColorValue)];
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if (!lowQualityThumbnail)
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[[TGMediaStoreContext instance] setMediaImageForKey:uri image:thumbnailImage attributes:nil];
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return [[TGDataResource alloc] initWithImage:thumbnailImage decoded:true];
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}
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}
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return nil;
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}
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@end |