iOS獲取相簿視訊的MD5方法（最好）
在網上查了好多方法複製過來都有問題，最後找了這個是最準確的，幫大家減少走彎路。
ADUtilHelper.h
//獲取視訊MD5
#import <Foundation/Foundation.h>
#import <SystemConfiguration/CaptiveNetwork.h>
@interface ADUtilHelper : NSObject
+(NSString *)getFileMD5WithPath:(NSString*)path;
+(NSString *)getWifiName;
@end
ADUtilHelper.m
#define FileHashDefaultChunkSizeForReadingData 1024*8
#import "ADUtilHelper.h"
#include <CommonCrypto/CommonDigest.h>
@implementation ADUtilHelper
+(NSString*)getFileMD5WithPath:(NSString*)path
{
return (__bridge_transfer NSString *)FileMD5HashCreateWithPath((__bridge CFStringRef)path, FileHashDefaultChunkSizeForReadingData);
}
CFStringRef FileMD5HashCreateWithPath(CFStringRef filePath,size_t chunkSizeForReadingData) {
// Declare needed variables
CFStringRef result = NULL;
CFReadStreamRef readStream = NULL;
// Get the file URL
CFURLRef fileURL =
CFURLCreateWithFileSystemPath(kCFAllocatorDefault,
(CFStringRef)filePath,
kCFURLPOSIXPathStyle,
(Boolean)false);
if (!fileURL) goto done;
// Create and open the read stream
readStream = CFReadStreamCreateWithFile(kCFAllocatorDefault,
(CFURLRef)fileURL);
if (!readStream) goto done;
bool didSucceed = (bool)CFReadStreamOpen(readStream);
if (!didSucceed) goto done;
// Initialize the hash object
CC_MD5_CTX hashObject;
CC_MD5_Init(&hashObject);
// Make sure chunkSizeForReadingData is valid
if (!chunkSizeForReadingData) {
chunkSizeForReadingData = FileHashDefaultChunkSizeForReadingData;
}
// Feed the data to the hash object
bool hasMoreData = true;
while (hasMoreData) {
uint8_t buffer[chunkSizeForReadingData];
CFIndex readBytesCount = CFReadStreamRead(readStream,(UInt8 *)buffer,(CFIndex)sizeof(buffer));
if (readBytesCount == -1) break;
if (readBytesCount == 0) {
hasMoreData = false;
continue;
}
CC_MD5_Update(&hashObject,(const void *)buffer,(CC_LONG)readBytesCount);
}
// Check if the read operation succeeded
didSucceed = !hasMoreData;
// Compute the hash digest
unsigned char digest[CC_MD5_DIGEST_LENGTH];
CC_MD5_Final(digest, &hashObject);
// Abort if the read operation failed
if (!didSucceed) goto done;
// Compute the string result
char hash[2 * sizeof(digest) + 1];
for (size_t i = 0; i < sizeof(digest); ++i) {
snprintf(hash + (2 * i), 3, "%02x", (int)(digest[i]));
}
result = CFStringCreateWithCString(kCFAllocatorDefault,(const char *)hash,kCFStringEncodingUTF8);
done:
if (readStream) {
CFReadStreamClose(readStream);
CFRelease(readStream);
}
if (fileURL) {
CFRelease(fileURL);
}
return result;
}
+(NSString *)getWifiName{
NSString *wifiName = @"";
CFArrayRef wifiInterfaces = CNCopySupportedInterfaces();
if (!wifiInterfaces) {
return nil;
}
NSArray *interfaces = (__bridge NSArray *)wifiInterfaces;
for (NSString *interfaceName in interfaces) {
CFDictionaryRef dictRef = CNCopyCurrentNetworkInfo((__bridge CFStringRef)(interfaceName));
if (dictRef) {
NSDictionary *networkInfo = (__bridge NSDictionary *)dictRef;
NSLog(@"network info -> %@", networkInfo);
wifiName = [networkInfo objectForKey:(__bridge NSString *)kCNNetworkInfoKeySSID];
NSLog(@"wifiName----%@",wifiName);
CFRelease(dictRef);
}
}
CFRelease(wifiInterfaces);
return wifiName;
}
@end
補充：相簿視訊獲取url並把視訊檔案存入沙盒
獲取相簿視訊
//代理
UIImagePickerControllerDelegate,UINavigationControllerDelegate
//從手機相簿選取視訊
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
//視訊編輯
imagePicker.allowsEditing = YES;
//相簿選取==UIImagePickerControllerSourceTypeSavedPhotosAlbum（開啟所有視訊，而不是列表）
imagePicker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
//設定選取型別，只能是視訊
imagePicker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
[self presentViewController:imagePicker animated:YES completion:nil];
#pragma mark -
#pragma UIImagePickerController Delegate
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString*)kUTTypeImage]) {
//獲取到圖片
// UIImage *img = [info objectForKey:UIImagePickerControllerEditedImage];
// self.fileData = UIImageJPEGRepresentation(img, 1.0);
} else if ([[info objectForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString*)kUTTypeMovie]) {
//獲取到視訊路徑（有些視訊沒有這個值，所以不用他）
// NSString *videoPath1 = [[info objectForKey:UIImagePickerControllerMediaURL] path];
//獲取視訊的url（所有視訊都有這個值）
NSURL * videoXT_URL = [info objectForKey:UIImagePickerControllerReferenceURL];
[picker dismissViewControllerAnimated:YES completion:nil];
}
}
存入沙盒
//系統視訊上傳儲存沙盒路徑（再用）臨時快取：NSCachesDirectory
#define KVideoUrlPath \
[[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"XiumeiVideoURLDWB"]
// 將原始視訊的URL轉化為NSData資料,寫入沙盒
- (void)getPhoneDateVideo:(NSURL *)url
{
// 解析一下,為什麼視訊不像圖片一樣一次性開闢本身大小的記憶體寫入?
// 想想,如果1個視訊有1G多,難道直接開闢1G多的空間大小來寫?
// 建立存放原始圖的資料夾--->VideoURL
NSFileManager * fileManager = [NSFileManager defaultManager];
if (![fileManager fileExistsAtPath:KVideoUrlPath]) {
[fileManager createDirectoryAtPath:KVideoUrlPath withIntermediateDirectories:YES attributes:nil error:nil];
}
ALAssetsLibrary *assetLibrary = [[ALAssetsLibrary alloc] init];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
if (url) {
[assetLibrary assetForURL:url resultBlock:^(ALAsset *asset) {
ALAssetRepresentation *rep = [asset defaultRepresentation];
//路徑後面拼接當前日期做區分，否則會讀取成一個檔案
// NSString * dateString = [NSString getNowDateFormat:@"yyyyMMddHHmmss"];
//視訊名字
NSString * dateString = rep.filename;
// NSLog(@"%@",dateString);
NSString * videoPath = [KVideoUrlPath stringByAppendingPathComponent:dateString];
const char *cvideoPath = [videoPath UTF8String];
FILE *file = fopen(cvideoPath, "a+");
if (file) {
const int bufferSize = 11024 * 1024;
// 初始化一個1M的buffer
Byte *buffer = (Byte*)malloc(bufferSize);
NSUInteger read = 0, offset = 0, written = 0;
NSError* err = nil;
if (rep.size != 0)
{
do {
read = [rep getBytes:buffer fromOffset:offset length:bufferSize error:&err];
written = fwrite(buffer, sizeof(char), read, file);
offset += read;
} while (read != 0 && !err);//沒到結尾，沒出錯，ok繼續
}
// 釋放緩衝區，關閉檔案
free(buffer);
buffer = NULL;
fclose(file);
file = NULL;
// UI的更新記得放在主執行緒,要不然等子執行緒排隊過來都不知道什麼年代了,會很慢的
dispatch_async(dispatch_get_main_queue(), ^{
//獲取視訊MD5
self.videoStringMD5 = [ADUtilHelper getFileMD5WithPath:videoPath];
// NSLog(@"視訊的MD5：%@",self.videoStringMD5);
});
}else{
dispatch_async(dispatch_get_main_queue(), ^{
[DWBToast showCenterWithText:@"視訊處理失敗"];
});
}
} failureBlock:^(NSError *error) {
dispatch_async(dispatch_get_main_queue(), ^{
[DWBToast showCenterWithText:@"視訊處理失敗"];
});
}];
}
});
}
相關文章
- iOS 獲取視訊圖片iOS
- C#獲取檔案MD5值方法C#
- opencv python 從攝像頭獲取視訊/從檔案獲取視訊 /儲存視訊OpenCVPython
- 獲取md5加密值加密
- 【玩具】獲取B站視訊的音訊片段音訊
- 獲取本地圖片/視訊地圖
- iOS獲取裝置資訊的常用方法iOS
- React 中獲取資料的 3 種方法：哪種最好？React
- 前端獲取視訊編碼格式前端
- iOS調取本地相簿成功之後，顯示的相簿英文名稱變成中文的解決方法iOS
- iOS獲取通訊錄聯絡人資訊iOS
- iOS視音訊快取方案評測iOS音訊快取
- js獲取元素的方法（獲取html元素的方法）JSHTML
- 短視訊帶貨原始碼，儲存圖片到相簿/相簿原始碼
- 短視訊app開發，長按將視訊儲存到相簿APP
- Python下獲取視訊的旋轉角度資訊Python
- Android CameraX ImageAnalysis 獲取視訊幀Android
- 獲取網路視訊任意幀畫面
- iOS中 讀取相簿,呼叫系統相機iOS
- [Swift] iOS中的目錄路徑以及獲取方法SwiftiOS
- iOS獲取windowiOS
- (轉載)iOS中獲取某個檢視的截圖iOS
- IOS呼叫相簿顯示英文解決方法iOS
- 就這樣獲取檔案的MD5和大小
- 10個最好的 jQuery 視訊外掛jQuery
- 如何獲取HTML5視訊的持續時間HTML
- 短視訊平臺開發，將圖片、視訊儲存到本地的相簿中
- 使用javacv 獲取視訊第一幀 做封面Java
- 獲取方法
- 遮蔽視訊網站 Flash Player 的P2P上傳最好的方法網站
- 唱吧 iOS 音視訊快取處理框架iOS快取框架
- Android 從手機相簿獲取圖片 uri 路徑 從相機獲取照片Android
- Android使用VideoView播放網路視訊,獲取網路視訊縮圖AndroidIDEView
- B站英文教學視訊的字幕獲取 學習必看！
- 短視訊系統，獲取camera的的影像並儲存
- Java獲取m3u8視訊時長Java
- javascript獲取視訊播放時間程式碼例項JavaScript
- IOS中獲取各種檔案的目錄路徑的方法iOS