From 7b02207537d35bfa1714bf8beafc921f717d100a Mon Sep 17 00:00:00 2001
From: 单军华
Date: Wed, 11 Jul 2018 10:47:42 +0800
Subject: [PATCH] 首次上传
---
screendisplay/Pods/SDWebImage/SDWebImage/NSData+ImageContentType.m | 98 +++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 98 insertions(+), 0 deletions(-)
diff --git a/screendisplay/Pods/SDWebImage/SDWebImage/NSData+ImageContentType.m b/screendisplay/Pods/SDWebImage/SDWebImage/NSData+ImageContentType.m
new file mode 100644
index 0000000..6a59061
--- /dev/null
+++ b/screendisplay/Pods/SDWebImage/SDWebImage/NSData+ImageContentType.m
@@ -0,0 +1,98 @@
+/*
+ * This file is part of the SDWebImage package.
+ * (c) Olivier Poitrey <rs@dailymotion.com>
+ * (c) Fabrice Aneche
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+#import "NSData+ImageContentType.h"
+#if SD_MAC
+#import <CoreServices/CoreServices.h>
+#else
+#import <MobileCoreServices/MobileCoreServices.h>
+#endif
+
+// Currently Image/IO does not support WebP
+#define kSDUTTypeWebP ((__bridge CFStringRef)@"public.webp")
+// AVFileTypeHEIC is defined in AVFoundation via iOS 11, we use this without import AVFoundation
+#define kSDUTTypeHEIC ((__bridge CFStringRef)@"public.heic")
+
+@implementation NSData (ImageContentType)
+
++ (SDImageFormat)sd_imageFormatForImageData:(nullable NSData *)data {
+ if (!data) {
+ return SDImageFormatUndefined;
+ }
+
+ // File signatures table: http://www.garykessler.net/library/file_sigs.html
+ uint8_t c;
+ [data getBytes:&c length:1];
+ switch (c) {
+ case 0xFF:
+ return SDImageFormatJPEG;
+ case 0x89:
+ return SDImageFormatPNG;
+ case 0x47:
+ return SDImageFormatGIF;
+ case 0x49:
+ case 0x4D:
+ return SDImageFormatTIFF;
+ case 0x52: {
+ if (data.length >= 12) {
+ //RIFF....WEBP
+ NSString *testString = [[NSString alloc] initWithData:[data subdataWithRange:NSMakeRange(0, 12)] encoding:NSASCIIStringEncoding];
+ if ([testString hasPrefix:@"RIFF"] && [testString hasSuffix:@"WEBP"]) {
+ return SDImageFormatWebP;
+ }
+ }
+ break;
+ }
+ case 0x00: {
+ if (data.length >= 12) {
+ //....ftypheic ....ftypheix ....ftyphevc ....ftyphevx
+ NSString *testString = [[NSString alloc] initWithData:[data subdataWithRange:NSMakeRange(4, 8)] encoding:NSASCIIStringEncoding];
+ if ([testString isEqualToString:@"ftypheic"]
+ || [testString isEqualToString:@"ftypheix"]
+ || [testString isEqualToString:@"ftyphevc"]
+ || [testString isEqualToString:@"ftyphevx"]) {
+ return SDImageFormatHEIC;
+ }
+ }
+ break;
+ }
+ }
+ return SDImageFormatUndefined;
+}
+
++ (nonnull CFStringRef)sd_UTTypeFromSDImageFormat:(SDImageFormat)format {
+ CFStringRef UTType;
+ switch (format) {
+ case SDImageFormatJPEG:
+ UTType = kUTTypeJPEG;
+ break;
+ case SDImageFormatPNG:
+ UTType = kUTTypePNG;
+ break;
+ case SDImageFormatGIF:
+ UTType = kUTTypeGIF;
+ break;
+ case SDImageFormatTIFF:
+ UTType = kUTTypeTIFF;
+ break;
+ case SDImageFormatWebP:
+ UTType = kSDUTTypeWebP;
+ break;
+ case SDImageFormatHEIC:
+ UTType = kSDUTTypeHEIC;
+ break;
+ default:
+ // default is kUTTypePNG
+ UTType = kUTTypePNG;
+ break;
+ }
+ return UTType;
+}
+
+@end
--
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