//
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// UIImage+MultiFormat.m
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// SDWebImage
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//
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// Created by Olivier Poitrey on 07/06/13.
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// Copyright (c) 2013 Dailymotion. All rights reserved.
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//
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#import "UIImage+MultiFormat.h"
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#import "UIImage+GIF.h"
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#import "NSData+ImageContentType.h"
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#import <ImageIO/ImageIO.h>
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#ifdef SD_WEBP
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#import "UIImage+WebP.h"
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#endif
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@implementation UIImage (MultiFormat)
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+ (UIImage *)sd_imageWithData:(NSData *)data {
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if (!data) {
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return nil;
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}
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UIImage *image;
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NSString *imageContentType = [NSData sd_contentTypeForImageData:data];
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if ([imageContentType isEqualToString:@"image/gif"]) {
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image = [UIImage sd_animatedGIFWithData:data];
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}
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#ifdef SD_WEBP
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else if ([imageContentType isEqualToString:@"image/webp"])
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{
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image = [UIImage sd_imageWithWebPData:data];
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}
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#endif
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else {
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image = [[UIImage alloc] initWithData:data];
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UIImageOrientation orientation = [self sd_imageOrientationFromImageData:data];
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if (orientation != UIImageOrientationUp) {
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image = [UIImage imageWithCGImage:image.CGImage
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scale:image.scale
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orientation:orientation];
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}
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}
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return image;
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}
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+(UIImageOrientation)sd_imageOrientationFromImageData:(NSData *)imageData {
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UIImageOrientation result = UIImageOrientationUp;
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CGImageSourceRef imageSource = CGImageSourceCreateWithData((__bridge CFDataRef)imageData, NULL);
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if (imageSource) {
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CFDictionaryRef properties = CGImageSourceCopyPropertiesAtIndex(imageSource, 0, NULL);
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if (properties) {
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CFTypeRef val;
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int exifOrientation;
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val = CFDictionaryGetValue(properties, kCGImagePropertyOrientation);
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if (val) {
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CFNumberGetValue(val, kCFNumberIntType, &exifOrientation);
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result = [self sd_exifOrientationToiOSOrientation:exifOrientation];
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} // else - if it's not set it remains at up
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CFRelease((CFTypeRef) properties);
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} else {
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//NSLog(@"NO PROPERTIES, FAIL");
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}
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CFRelease(imageSource);
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}
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return result;
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}
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#pragma mark EXIF orientation tag converter
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// Convert an EXIF image orientation to an iOS one.
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// reference see here: http://sylvana.net/jpegcrop/exif_orientation.html
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+ (UIImageOrientation) sd_exifOrientationToiOSOrientation:(int)exifOrientation {
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UIImageOrientation orientation = UIImageOrientationUp;
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switch (exifOrientation) {
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case 1:
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orientation = UIImageOrientationUp;
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break;
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case 3:
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orientation = UIImageOrientationDown;
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break;
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case 8:
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orientation = UIImageOrientationLeft;
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break;
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case 6:
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orientation = UIImageOrientationRight;
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break;
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case 2:
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orientation = UIImageOrientationUpMirrored;
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break;
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case 4:
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orientation = UIImageOrientationDownMirrored;
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break;
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case 5:
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orientation = UIImageOrientationLeftMirrored;
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break;
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case 7:
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orientation = UIImageOrientationRightMirrored;
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break;
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default:
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break;
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}
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return orientation;
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}
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@end
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