84 lines
3.3 KiB
Dart
84 lines
3.3 KiB
Dart
//
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// Created by cjl on 2018/9/8.
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//
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#import "CompressHandler.h"
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#import "UIImage+scale.h"
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#import "FlutterImageCompressPlugin.h"
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#import "SDImageWebPCoder.h"
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@implementation CompressHandler {
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}
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+ (NSData *)compressWithData:(NSData *)data minWidth:(int)minWidth minHeight:(int)minHeight quality:(int)quality
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rotate:(int)rotate format:(int)format {
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UIImage *img = [[UIImage alloc] initWithData:data];
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return [CompressHandler compressWithUIImage:img minWidth:minWidth minHeight:minHeight quality:quality rotate:rotate format:format];
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}
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+ (NSData *)compressWithUIImage:(UIImage *)image minWidth:(int)minWidth minHeight:(int)minHeight quality:(int)quality
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rotate:(int)rotate format:(int)format {
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if([FlutterImageCompressPlugin showLog]){
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NSLog(@"width = %.0f",[image size].width);
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NSLog(@"height = %.0f",[image size].height);
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NSLog(@"minWidth = %d",minWidth);
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NSLog(@"minHeight = %d",minHeight);
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NSLog(@"format = %d", format);
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}
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image = [image scaleWithMinWidth:minWidth minHeight:minHeight];
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if(rotate % 360 != 0){
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image = [image rotate: rotate];
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}
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NSData *resultData = [self compressDataWithImage:image quality:quality format:format];
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return resultData;
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}
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+ (NSData *)compressDataWithUIImage:(UIImage *)image minWidth:(int)minWidth minHeight:(int)minHeight
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quality:(int)quality rotate:(int)rotate format:(int)format {
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image = [image scaleWithMinWidth:minWidth minHeight:minHeight];
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if(rotate % 360 != 0){
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image = [image rotate: rotate];
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}
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return [self compressDataWithImage:image quality:quality format:format];
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}
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+ (NSData *)compressDataWithImage:(UIImage *)image quality:(float)quality format:(int)format {
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NSData *data;
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if (format == 2) { // heic
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CIImage *ciImage = [CIImage imageWithCGImage:image.CGImage];
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CIContext *ciContext = [[CIContext alloc]initWithOptions:nil];
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NSString *tmpDir = NSTemporaryDirectory();
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double time = [[NSDate alloc]init].timeIntervalSince1970;
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NSString *target = [NSString stringWithFormat:@"%@%.0f.heic",tmpDir, time * 1000];
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NSURL *url = [NSURL fileURLWithPath:target];
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NSMutableDictionary *options = [NSMutableDictionary new];
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NSString *qualityKey = (__bridge NSString *)kCGImageDestinationLossyCompressionQuality;
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// CIImageRepresentationOption
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[options setObject:@(quality / 100) forKey: qualityKey];
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if (@available(iOS 11.0, *)) {
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[ciContext writeHEIFRepresentationOfImage:ciImage toURL:url format: kCIFormatARGB8 colorSpace: ciImage.colorSpace options:options error:nil];
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data = [NSData dataWithContentsOfURL:url];
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} else {
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// Fallback on earlier versions
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data = nil;
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}
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} else if(format == 3){ // webp
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/* SDImageCoderOptions *option = @{SDImageCoderEncodeCompressionQuality: @(quality / 100)};
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data = [[SDImageWebPCoder sharedCoder]encodedDataWithImage:image format:SDImageFormatWebP options:option]; */
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} else if(format == 1){ // png
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data = UIImagePNGRepresentation(image);
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}else { // 0 or other is jpeg
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data = UIImageJPEGRepresentation(image, (CGFloat) quality / 100);
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}
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return data;
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}
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@end
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