80 lines
3.4 KiB
Objective-C
80 lines
3.4 KiB
Objective-C
/*
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* Copyright [2019] [Doric.Pub]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//
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// Created by jingpeng.wang on 2022/1/10.
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//
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#import <DoricCore/Doric.h>
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#import "DoricImageDecoderPlugin.h"
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#import "DoricExtensions.h"
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@implementation DoricImageDecoderPlugin
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- (void)getImageInfo:(NSDictionary *)resource withPromise:(DoricPromise *)promise {
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DoricResource *doricResource = [self.doricContext.driver.registry.loaderManager load:resource withContext:self.doricContext];
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if (doricResource != nil) {
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DoricAsyncResult *asyncResult = [doricResource fetch];
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[asyncResult setResultCallback:^(id _Nonnull result) {
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UIImage *image = [UIImage imageWithData:result];
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[promise resolve:@{
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@"width": @(image.size.width),
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@"height": @(image.size.height)
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}];
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}];
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[asyncResult setExceptionCallback:^(NSException *_Nonnull e) {
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DoricLog(@"Cannot load resource %s, %s", resource.description, e.description);
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}];
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} else {
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DoricLog(@"Cannot find loader for resource %s", resource.description);
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[promise reject:@"Load error"];
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}
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}
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- (void)decodeToPixels:(NSDictionary *)resource withPromise:(DoricPromise *)promise {
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DoricResource *doricResource = [self.doricContext.driver.registry.loaderManager load:resource withContext:self.doricContext];
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if (doricResource != nil) {
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DoricAsyncResult *asyncResult = [doricResource fetch];
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[asyncResult setResultCallback:^(id _Nonnull result) {
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UIImage *image = [UIImage imageWithData:result];
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CGImageRef imageRef = image.CGImage;
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NSUInteger iWidth = CGImageGetWidth(imageRef);
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NSUInteger iHeight = CGImageGetHeight(imageRef);
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NSUInteger iBytesPerPixel = 4;
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NSUInteger iBytesPerRow = iBytesPerPixel * iWidth;
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NSUInteger iBitsPerComponent = 8;
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unsigned char *imageBytes = malloc(iWidth * iHeight * iBytesPerPixel);
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CGColorSpaceRef colorspace = CGColorSpaceCreateDeviceRGB();
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CGContextRef context = CGBitmapContextCreate(imageBytes, iWidth, iHeight, iBitsPerComponent, iBytesPerRow, colorspace, kCGImageAlphaPremultipliedLast);
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CGRect rect = CGRectMake(0, 0, iWidth, iHeight);
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CGContextDrawImage(context, rect, imageRef);
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CGColorSpaceRelease(colorspace);
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CGContextRelease(context);
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NSData *data = [NSData dataWithBytesNoCopy:(void *) imageBytes length:sizeof(unsigned char) * iWidth * iHeight * iBytesPerPixel freeWhenDone:YES];
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[promise resolve:data];
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}];
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[asyncResult setExceptionCallback:^(NSException *_Nonnull e) {
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DoricLog(@"Cannot load resource %s, %s", resource.description, e.description);
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}];
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} else {
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DoricLog(@"Cannot find loader for resource %s", resource.description);
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[promise reject:@"Load error"];
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}
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}
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@end
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