已增加webp动图支持，附代码 #6
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iOS 13好像webp的动图还是不可以显示,例如:https://isparta.github.io/compare-webp/image/gif_webp/webp/1.webp |
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@Jing2684 当然你也可以继续试试下面的代码，我后面参考SDWebImage加了点处理 ////
//// BAURLSessionProtocol.m
//// BAWKWebView-WebP
////
//// Created by 海洋唐 on 2017/7/28.
//// Copyright © 2017年 boai. All rights reserved.
////
//
//#import "BAURLSessionProtocol.h"
//#import <UIKit/UIKit.h>
//#import <SDWebImageWebPCoder/UIImage+WebP.h>
//#import <SDWebImage/SDWebImage.h>
//#import <MobileCoreServices/MobileCoreServices.h>
//
//#if __has_include("webp/decode.h") && __has_include("webp/encode.h") && __has_include("webp/demux.h") && __has_include("webp/mux.h")
//#import "webp/decode.h"
//#import "webp/encode.h"
//#import "webp/demux.h"
//#import "webp/mux.h"
//#elif __has_include(<libwebp/decode.h>) && __has_include(<libwebp/encode.h>) && __has_include(<libwebp/demux.h>) && __has_include(<libwebp/mux.h>)
//#import <libwebp/decode.h>
//#import <libwebp/encode.h>
//#import <libwebp/demux.h>
//#import <libwebp/mux.h>
//#else
//@import libwebp;
//#endif
//
//static NSString *URLProtocolHandledKey = @"URLHasHandle";
//
//@interface BAURLSessionProtocol()<NSURLSessionDelegate,NSURLSessionDataDelegate>
//
//@property (nonatomic, strong) NSURLSession *session;
//@property (nonatomic, strong) NSMutableData *imageData;
//@property (nonatomic, assign) BOOL beginAppendData;
//
//@end
//
//@implementation BAURLSessionProtocol
//
//#pragma mark 初始化请求
///**
// 判断是否启用SD_WEBP 并且图片格式为webp 如果为YES 则标记请求需要自行处理并且防止无限循环 为NO则不处理
// */
//+ (BOOL)canInitWithRequest:(NSURLRequest *)request {
// NSString *scheme = [[request URL] scheme];
// BOOL commonScheme = ([scheme caseInsensitiveCompare:@"http"] == NSOrderedSame ||
// [scheme caseInsensitiveCompare:@"https"] == NSOrderedSame);
//
//
// /// 只处理webp结尾的请求，避免重定向所有的请求，特别是POST请求（body丢失的问题）
// if (commonScheme && [request.URL.absoluteString.lowercaseString containsString:@".webp"]) {
// if ([NSURLProtocol propertyForKey:URLProtocolHandledKey inRequest:request]) {
// return NO;
// }
// return YES;
// }
// return NO;
//}
//
//+ (NSURLRequest *) canonicalRequestForRequest:(NSURLRequest *)request {
// return request;
//}
//
//#pragma mark 通信协议内容实现
//// 开始
//- (void)startLoading {
// NSMutableURLRequest *mutableReqeust = [[self request] mutableCopy];
// [NSURLProtocol setProperty:@YES forKey:URLProtocolHandledKey inRequest:mutableReqeust];
//
// NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
// self.session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[NSOperationQueue currentQueue]];
// [[self.session dataTaskWithRequest:mutableReqeust] resume];
//}
//
//// 停止
//- (void)stopLoading {
// [self.session invalidateAndCancel];
//}
//
//#pragma mark - dataDelegate
//- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task
//willPerformHTTPRedirection:(NSHTTPURLResponse *)response
// newRequest:(NSURLRequest *)newRequest
// completionHandler:(void (^)(NSURLRequest *))completionHandler {
//
// NSMutableURLRequest * redirectRequest;
//
// redirectRequest = [newRequest mutableCopy];
// [[self class] removePropertyForKey:URLProtocolHandledKey inRequest:redirectRequest];
//
// [[self client] URLProtocol:self wasRedirectedToRequest:redirectRequest redirectResponse:response];
//
// [self.session invalidateAndCancel];
// NSError * error = [NSError errorWithDomain:NSCocoaErrorDomain
// code:NSUserCancelledError userInfo:nil];
// [[self client] URLProtocol:self didFailWithError:error];
//}
//
//- (void)URLSession:(NSURLSession *)session
// dataTask:(NSURLSessionDataTask *)dataTask
//didReceiveResponse:(NSURLResponse *)response
// completionHandler:(void (^)(NSURLSessionResponseDisposition disposition))completionHandler {
//
// [self.client URLProtocol:self didReceiveResponse:response
// cacheStoragePolicy:NSURLCacheStorageNotAllowed];
// NSInteger expected = response.expectedContentLength > 0 ? (NSInteger)response.expectedContentLength : 0;
// self.imageData = [[NSMutableData alloc] initWithCapacity:expected];
//
// if (completionHandler) {
// completionHandler(NSURLSessionResponseAllow);
// }
//}
//
//- (void)URLSession:(NSURLSession *)session dataTask:(NSURLSessionDataTask *)dataTask
// didReceiveData:(NSData *)data{
//
// self.beginAppendData = YES;
// [self.imageData appendData:data];
// if (!_beginAppendData) {
// [self.client URLProtocol:self didLoadData:data];
// }
//}
//
//- (void)URLSession:(NSURLSession *)session task:(NSURLSessionTask *)task didCompleteWithError:(nullable NSError *)error{
//
// if (error) {
// [self.client URLProtocol:self didFailWithError:error];
// return;
// }
// SDImageFormat format = [NSData sd_imageFormatForImageData:self.imageData];
// if (format == SDImageFormatWebP) {
// UIImage *imgData = [UIImage sd_imageWithWebPData:self.imageData];
// NSArray * images = imgData.images;
//
// if (images.count > 1) {
// /// 转换成gif
// NSString * fileName = [[task.currentRequest.URL URLByDeletingPathExtension] lastPathComponent];
// fileName = [NSString stringWithFormat:@"%@.gif",fileName];
// NSString *cachePath = [NSTemporaryDirectory() stringByAppendingPathComponent:fileName];
// [self handleAnimatedImage:imgData images:images cachePath:cachePath];
// } else {
// [self handleStaticImage:imgData];
// }
//
// [self.client URLProtocolDidFinishLoading:self];
// } else {
// [self finishWithData:self.imageData];
// [self.client URLProtocolDidFinishLoading:self];
// }
//}
//
//- (void)finishWithData:(NSData *)imageData {
// self.beginAppendData = NO;
// self.imageData = nil;
// [self.client URLProtocol:self didLoadData:imageData];
//}
//
//
//- (void)handleStaticImage:(UIImage *)image {
// NSData *transData = UIImageJPEGRepresentation(image, 0.9f);
// [self finishWithData:transData];
//}
//
//- (void)handleAnimatedImage:(UIImage *)image
// images:(NSArray <UIImage *>*)images
// cachePath:(NSString *)cachePath {
//
// if (image.sd_imageFormat == SDImageFormatGIF) {
// [self finishWithData:[self.imageData copy]];
// return;
// }
//
// NSAssert(image.sd_imageFormat == SDImageFormatWebP, @"请校验格式");
//
//
// WebPData webpData;
// WebPDataInit(&webpData);
// webpData.bytes = self.imageData.bytes;
// webpData.size = self.imageData.length;
// WebPDemuxer *demuxer = WebPDemux(&webpData);
// if (!demuxer) {
// [self finishWithData:[self.imageData copy]];
// return;
// }
//
// // for animated webp image
// WebPIterator iter;
// // libwebp's index start with 1
// if (!WebPDemuxGetFrame(demuxer, 1, &iter)) {
// WebPDemuxReleaseIterator(&iter);
// WebPDemuxDelete(demuxer);
// [self finishWithData:[self.imageData copy]];
// return;
// }
//
// /// 获取每一帧的时长
// NSMutableArray<NSNumber *> *frames = [NSMutableArray array];
// do {
// @autoreleasepool {
// int duration = iter.duration;
// if (duration <= 10) {
// duration = 100;
// }
// [frames addObject:[NSNumber numberWithDouble:duration / 1000.0]];
// }
// } while (WebPDemuxNextFrame(&iter));
// WebPDemuxReleaseIterator(&iter);
// WebPDemuxDelete(demuxer);
//
//
// NSURL * cacheURL = [NSURL fileURLWithPath:cachePath];
//
// // 设置gif的彩色空间格式、颜色深度、执行次数
// NSDictionary *gifDic = @{
// (NSString *)kCGImagePropertyGIFLoopCount:@(image.sd_imageLoopCount),
// (NSString *)kCGImagePropertyColorModel:(NSString *)kCGImagePropertyColorModelRGB,
// (NSString *)kCGImagePropertyDepth:@(16)
// };
// NSDictionary *gifProperties = @{(NSString *)kCGImagePropertyGIFDictionary:gifDic};
// CGImageDestinationRef destination = CGImageDestinationCreateWithURL((CFURLRef)cacheURL,
// kUTTypeGIF,
// images.count,
// NULL);
// CGImageDestinationSetProperties(destination, (CFDictionaryRef)gifProperties);
//
//
// NSUInteger repeatCount = images.count / frames.count;
// for (int32_t index = 0; index < frames.count; index ++) {
// /// 对于大部分动图而言，取平均值 image.duration / images.count 即可
// /// 但是也有遇到过 异常卡顿的动图，详细对比后发现，frames只取到了58帧，但是images有348帧
// /// 相当于重复了6次，所以要算出重复的次数，取image的时候跳着取
// ///
// /// 具体原因看 [SDImageCoderHelper animatedImageWithFrames:frames] 方法
// /// 里面有求最大公约数 NSUInteger const gcd = gcdArray(frameCount, durations);
// /// 然后按最大公约数gcd重复插入同一帧gcd次 for (size_t i = 0; i < repeatCount; ++i) {
// /// 正常情况下gcd是1，每1帧插入1次生成新的动图(animatedImage)
// /// 异常情况下gcd会大于1，就会出现同一帧重复插入的情况，会导致总时长累加gcd倍
// /// 出现肉眼可见的卡顿，单个gif的文件大小也会很大，
// /// 所以这里要跳着取 (repeatCount = gcd)，即可正常显示
//
// NSUInteger imageIndex = index * repeatCount;
// NSNumber * duration = frames[index];
//
// UIImage * frameImage = [images objectAtIndex:imageIndex];
// NSDictionary * gifDict = @{
// (NSString *)kCGImagePropertyGIFDelayTime:duration
// };
// NSDictionary * frameProperties = @{
// (NSString *)kCGImagePropertyGIFDictionary:gifDict
// };
// CGImageDestinationAddImage(destination, frameImage.CGImage, (CFDictionaryRef)frameProperties);
// }
//
// CGImageDestinationFinalize(destination);
// CFRelease(destination);
//
// NSData *transData = [NSData dataWithContentsOfFile:cachePath];
// [self finishWithData:transData];
//}
//
//@end |
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我已经部分使用了你们的代码，解决了问题，我没有直接拦截https，而是使用的自定义协议头，不过还是谢谢回复------------------ 原始邮件 ------------------
***@***.***>
发送时间: 2021年4月8日(星期四) 上午10:54
***@***.***>;
***@***.******@***.***>;
主题: Re: [BAHome/BAWKWebView-WebP] 已增加webp动图支持，附代码 (#6)
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iOS14的WebKit已经支持webp，所以只要在iOS13及下面的版本做兼容即可。
我没有详细取每一帧的duration，用的duration是平均值，遇到极个别动图会
很慢，大部分图看不出什么异样。增加或者修改下面的代码
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