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https://gitlab.opencode.de/bwi/bundesmessenger/clients/bundesmessenger-ios.git
synced 2026-05-04 06:58:20 +02:00
Media Manager: refactoring (download video/image with a unique API)
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giomfo
@@ -29,155 +29,69 @@ static MediaManager *sharedMediaManager = nil;
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@implementation MediaManager
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// Table of mediaLoaders in progress
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static NSMutableDictionary* pendingMediaLoadersByURL = nil;
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static NSMutableDictionary* downloadTableByURL = nil;
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+ (id)sharedInstance {
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@synchronized(self) {
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if(sharedMediaManager == nil)
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if(sharedMediaManager == nil) {
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sharedMediaManager = [[self alloc] init];
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// Create download table here
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downloadTableByURL = [[NSMutableDictionary alloc] init];
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}
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}
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return sharedMediaManager;
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}
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+ (NSString*)formatSecondsInterval:(CGFloat)secondsInterval {
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NSMutableString* formattedString = [[NSMutableString alloc] init];
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if (secondsInterval < 1) {
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[formattedString appendString:@"< 1s"];
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} else if (secondsInterval < 60)
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{
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[formattedString appendFormat:@"%ds", (int)secondsInterval];
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}
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else if (secondsInterval < 3600)
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{
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[formattedString appendFormat:@"%dm %2ds", (int)(secondsInterval/60), ((int)secondsInterval) % 60];
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}
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else if (secondsInterval >= 3600)
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{
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[formattedString appendFormat:@"%dh %dm %ds", (int)(secondsInterval / 3600),
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((int)(secondsInterval) % 3600) / 60,
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(int)(secondsInterval) % 60];
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}
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[formattedString appendString:@" left"];
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return formattedString;
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}
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#pragma mark - Media Download
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+ (UIImage *)resize:(UIImage *)image toFitInSize:(CGSize)size {
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UIImage *resizedImage = image;
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// Check whether resize is required
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if (size.width && size.height) {
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CGFloat width = image.size.width;
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CGFloat height = image.size.height;
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if (width > size.width) {
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height = (height * size.width) / width;
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height = floorf(height / 2) * 2;
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width = size.width;
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}
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if (height > size.height) {
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width = (width * size.height) / height;
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width = floorf(width / 2) * 2;
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height = size.height;
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}
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if (width != image.size.width || height != image.size.height) {
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// Create the thumbnail
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CGSize imageSize = CGSizeMake(width, height);
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UIGraphicsBeginImageContext(imageSize);
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// // set to the top quality
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// CGContextRef context = UIGraphicsGetCurrentContext();
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// CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
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CGRect thumbnailRect = CGRectMake(0, 0, 0, 0);
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thumbnailRect.origin = CGPointMake(0.0,0.0);
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thumbnailRect.size.width = imageSize.width;
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thumbnailRect.size.height = imageSize.height;
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[image drawInRect:thumbnailRect];
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resizedImage = UIGraphicsGetImageFromCurrentImageContext();
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UIGraphicsEndImageContext();
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}
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}
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return resizedImage;
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}
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+ (id)downloadPicture:(NSString*)pictureURL {
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if ([pictureURL hasPrefix:kMediaManagerPrefixForDummyURL] == NO) {
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// Create a media loader to download picture
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+ (MediaLoader*)downloadMedia:(NSString*)mediaURL mimeType:(NSString *)mimeType {
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if ([mediaURL hasPrefix:kMediaManagerPrefixForDummyURL] == NO) {
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// Create a media loader to download data
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MediaLoader *mediaLoader = [[MediaLoader alloc] init];
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[self setMediaLoader:mediaLoader forURL:pictureURL];
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[mediaLoader downloadMedia:pictureURL mimeType:@"image/jpeg" success:^(NSString *cacheFilePath) {
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[self removeMediaLoaderWithUrl:pictureURL];
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[[NSNotificationCenter defaultCenter] postNotificationName:kMediaDownloadDidFinishNotification object:pictureURL userInfo:nil];
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// Report this loader
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[downloadTableByURL setValue:mediaLoader forKey:mediaURL];
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// Launch download
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[mediaLoader downloadMedia:mediaURL mimeType:mimeType success:^(NSString *cacheFilePath) {
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[downloadTableByURL removeObjectForKey:mediaURL];
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[[NSNotificationCenter defaultCenter] postNotificationName:kMediaDownloadDidFinishNotification object:mediaURL userInfo:nil];
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} failure:^(NSError *error) {
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[self removeMediaLoaderWithUrl:pictureURL];
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NSLog(@"Failed to download image (%@): %@", pictureURL, error);
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[[NSNotificationCenter defaultCenter] postNotificationName:kMediaDownloadDidFailNotification object:pictureURL userInfo:nil];
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[downloadTableByURL removeObjectForKey:mediaURL];
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NSLog(@"Failed to download image (%@): %@", mediaURL, error);
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[[NSNotificationCenter defaultCenter] postNotificationName:kMediaDownloadDidFailNotification object:mediaURL userInfo:nil];
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}];
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return mediaLoader;
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}
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[[NSNotificationCenter defaultCenter] postNotificationName:kMediaDownloadDidFailNotification object:pictureURL userInfo:nil];
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[[NSNotificationCenter defaultCenter] postNotificationName:kMediaDownloadDidFailNotification object:mediaURL userInfo:nil];
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return nil;
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}
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+ (id)prepareMedia:(NSString *)mediaURL
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mimeType:(NSString *)mimeType
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success:(blockMediaLoader_onMediaReady)success
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failure:(blockMediaLoader_onError)failure {
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id ret = nil;
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// Check cache
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NSString* filename = [MediaManager getCacheFileNameFor:mediaURL mimeType:mimeType];
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if ([[NSFileManager defaultManager] fileExistsAtPath:filename]) {
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if (success) {
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// Reply synchronously
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success (filename);
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}
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}
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else if ([mediaURL hasPrefix:kMediaManagerPrefixForDummyURL] == NO) {
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// Create a media loader to download media content
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MediaLoader *mediaLoader = [[MediaLoader alloc] init];
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[mediaLoader downloadMedia:mediaURL mimeType:mimeType success:success failure:failure];
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ret = mediaLoader;
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} else {
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NSLog(@"Load tmp media from cache failed: %@", mediaURL);
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if (failure){
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failure(nil);
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}
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}
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return ret;
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}
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// try to find out a media loader from a media URL
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+ (id)mediaLoaderForURL:(NSString*)url {
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if (pendingMediaLoadersByURL && url) {
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return [pendingMediaLoadersByURL valueForKey:url];
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+ (id)existingDownloaderForURL:(NSString*)url {
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if (downloadTableByURL && url) {
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return [downloadTableByURL valueForKey:url];
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}
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return nil;
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}
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+ (void)setMediaLoader:(MediaLoader*)mediaLoader forURL:(NSString*)url {
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if (!pendingMediaLoadersByURL) {
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pendingMediaLoadersByURL = [[NSMutableDictionary alloc] init];
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#pragma mark - Cache Handling
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+ (UIImage*)loadCachePictureForURL:(NSString*)pictureURL {
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UIImage* res = nil;
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NSString* filename = [MediaManager cachePathForMediaURL:pictureURL andType:@"image/jpeg"];
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if ([[NSFileManager defaultManager] fileExistsAtPath:filename]) {
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NSData* imageContent = [NSData dataWithContentsOfFile:filename options:(NSDataReadingMappedAlways | NSDataReadingUncached) error:nil];
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if (imageContent) {
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res = [[UIImage alloc] initWithData:imageContent];
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}
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}
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// sanity check
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if (mediaLoader && url) {
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[pendingMediaLoadersByURL setValue:mediaLoader forKey:url];
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}
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return res;
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}
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+ (void)removeMediaLoaderWithUrl:(NSString*)url {
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if (url) {
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[pendingMediaLoadersByURL removeObjectForKey:url];
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}
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}
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+ (NSString*)cacheMediaData:(NSData*)mediaData forURL:(NSString *)mediaURL mimeType:(NSString *)mimeType {
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NSString* filename = [MediaManager getCacheFileNameFor:mediaURL mimeType:mimeType];
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+ (NSString*)cacheMediaData:(NSData*)mediaData forURL:(NSString *)mediaURL andType:(NSString *)mimeType {
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NSString* filename = [MediaManager cachePathForMediaURL:mediaURL andType:mimeType];
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if ([mediaData writeToFile:filename atomically:YES]) {
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return filename;
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@@ -186,6 +100,26 @@ static NSMutableDictionary* pendingMediaLoadersByURL = nil;
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}
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}
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+ (NSString*)cachePathForMediaURL:(NSString*)mediaURL andType:(NSString *)mimeType {
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NSString *fileName;
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if ([mimeType isEqualToString:@"image/jpeg"]) {
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fileName = [NSString stringWithFormat:@"ima%lu.jpg", (unsigned long)mediaURL.hash];
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} else if ([mimeType isEqualToString:@"video/mp4"]) {
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fileName = [NSString stringWithFormat:@"video%lu.mp4", (unsigned long)mediaURL.hash];
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} else if ([mimeType isEqualToString:@"video/quicktime"]) {
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fileName = [NSString stringWithFormat:@"video%lu.mov", (unsigned long)mediaURL.hash];
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} else {
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NSString *extension = @"";
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NSArray *components = [mediaURL componentsSeparatedByString:@"."];
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if (components && components.count > 1) {
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extension = [components lastObject];
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}
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fileName = [NSString stringWithFormat:@"%lu.%@", (unsigned long)mediaURL.hash, extension];
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}
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return [[MediaManager getCachePath] stringByAppendingPathComponent:fileName];
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}
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+ (void)clearCache {
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NSError *error = nil;
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@@ -246,22 +180,6 @@ static NSMutableDictionary* pendingMediaLoadersByURL = nil;
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return (NSUInteger)[MediaManager folderSize:mediaCachePath];
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}
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#pragma mark - Cache handling
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+ (UIImage*)loadCachePicture:(NSString*)pictureURL {
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UIImage* res = nil;
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NSString* filename = [MediaManager getCacheFileNameFor:pictureURL mimeType:@"image/jpeg"];
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if ([[NSFileManager defaultManager] fileExistsAtPath:filename]) {
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NSData* imageContent = [NSData dataWithContentsOfFile:filename options:(NSDataReadingMappedAlways | NSDataReadingUncached) error:nil];
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if (imageContent) {
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res = [[UIImage alloc] initWithData:imageContent];
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}
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}
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return res;
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}
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+ (NSString*)getCachePath {
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NSString *cachePath = nil;
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@@ -280,24 +198,4 @@ static NSMutableDictionary* pendingMediaLoadersByURL = nil;
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return cachePath;
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}
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+ (NSString*)getCacheFileNameFor:(NSString*)mediaURL mimeType:(NSString *)mimeType {
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NSString *fileName;
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if ([mimeType isEqualToString:@"image/jpeg"]) {
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fileName = [NSString stringWithFormat:@"ima%lu.jpg", (unsigned long)mediaURL.hash];
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} else if ([mimeType isEqualToString:@"video/mp4"]) {
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fileName = [NSString stringWithFormat:@"video%lu.mp4", (unsigned long)mediaURL.hash];
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} else if ([mimeType isEqualToString:@"video/quicktime"]) {
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fileName = [NSString stringWithFormat:@"video%lu.mov", (unsigned long)mediaURL.hash];
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} else {
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NSString *extension = @"";
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NSArray *components = [mediaURL componentsSeparatedByString:@"."];
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if (components && components.count > 1) {
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extension = [components lastObject];
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}
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fileName = [NSString stringWithFormat:@"%lu.%@", (unsigned long)mediaURL.hash, extension];
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}
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return [[MediaManager getCachePath] stringByAppendingPathComponent:fileName];
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}
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@end
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