//
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// TZImageManager.m
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// TZImagePickerController
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//
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// Created by 谭真 on 16/1/4.
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// Copyright © 2016年 谭真. All rights reserved.
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//
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#import "TZImageManager.h"
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#import "TZAssetModel.h"
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#import "TZImagePickerController.h"
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#import <MobileCoreServices/MobileCoreServices.h>
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@interface TZImageManager ()
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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@end
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@implementation TZImageManager
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CGSize AssetGridThumbnailSize;
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CGFloat TZScreenWidth;
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CGFloat TZScreenScale;
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static TZImageManager *manager;
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static dispatch_once_t onceToken;
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+ (instancetype)manager {
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dispatch_once(&onceToken, ^{
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manager = [[self alloc] init];
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// manager.cachingImageManager = [[PHCachingImageManager alloc] init];
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// manager.cachingImageManager.allowsCachingHighQualityImages = YES;
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[manager configTZScreenWidth];
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});
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return manager;
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}
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+ (void)deallocManager {
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onceToken = 0;
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manager = nil;
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}
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- (void)setPhotoWidth:(CGFloat)photoWidth {
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_photoWidth = photoWidth;
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TZScreenWidth = photoWidth / 2;
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}
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- (void)setColumnNumber:(NSInteger)columnNumber {
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[self configTZScreenWidth];
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_columnNumber = columnNumber;
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CGFloat margin = 4;
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CGFloat itemWH = (TZScreenWidth - 2 * margin - 4) / columnNumber - margin;
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AssetGridThumbnailSize = CGSizeMake(itemWH * TZScreenScale, itemWH * TZScreenScale);
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}
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- (void)configTZScreenWidth {
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TZScreenWidth = [UIScreen mainScreen].bounds.size.width;
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// 测试发现，如果scale在plus真机上取到3.0，内存会增大特别多。故这里写死成2.0
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TZScreenScale = 2.0;
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if (TZScreenWidth > 700) {
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TZScreenScale = 1.5;
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}
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}
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- (BOOL)isPHAuthorizationStatusLimited {
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if (@available(iOS 14,*)) {
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NSInteger status = [PHPhotoLibrary authorizationStatusForAccessLevel:PHAccessLevelReadWrite];
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if (status == PHAuthorizationStatusLimited) {
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return YES;
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}
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}
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return NO;
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}
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/// Return YES if Authorized 返回YES如果得到了授权
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- (BOOL)authorizationStatusAuthorized {
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if (self.isPreviewNetworkImage) {
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return YES;
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}
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NSInteger status = [PHPhotoLibrary authorizationStatus];
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if (status == 0) {
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/**
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* 当某些情况下AuthorizationStatus == AuthorizationStatusNotDetermined时，无法弹出系统首次使用的授权alertView，系统应用设置里亦没有相册的设置，此时将无法使用，故作以下操作，弹出系统首次使用的授权alertView
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*/
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[self requestAuthorizationWithCompletion:nil];
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}
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return status == 3;
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}
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- (void)requestAuthorizationWithCompletion:(void (^)(void))completion {
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void (^callCompletionBlock)(void) = ^(){
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dispatch_async(dispatch_get_main_queue(), ^{
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if (completion) {
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completion();
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}
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});
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};
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dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
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[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus status) {
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callCompletionBlock();
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}];
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});
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}
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#pragma mark - Get Album
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- (void)getCameraRollAlbum:(BOOL)allowPickingVideo allowPickingImage:(BOOL)allowPickingImage needFetchAssets:(BOOL)needFetchAssets completion:(void (^)(TZAlbumModel *model))completion {
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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config.allowPickingVideo = allowPickingVideo;
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config.allowPickingImage = allowPickingImage;
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[self getCameraRollAlbumWithFetchAssets:needFetchAssets completion:completion];
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}
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/// Get Album 获得相册/相册数组
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- (void)getCameraRollAlbumWithFetchAssets:(BOOL)needFetchAssets completion:(void (^)(TZAlbumModel *model))completion {
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__block TZAlbumModel *model;
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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PHFetchOptions *option = [[PHFetchOptions alloc] init];
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if (!config.allowPickingVideo) option.predicate = [NSPredicate predicateWithFormat:@"mediaType == %ld", PHAssetMediaTypeImage];
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if (!config.allowPickingImage) option.predicate = [NSPredicate predicateWithFormat:@"mediaType == %ld",
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PHAssetMediaTypeVideo];
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// option.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"modificationDate" ascending:self.sortAscendingByModificationDate]];
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if (!self.sortAscendingByModificationDate) {
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option.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:self.sortAscendingByModificationDate]];
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}
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PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAny options:nil];
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for (PHAssetCollection *collection in smartAlbums) {
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// 有可能是PHCollectionList类的的对象，过滤掉
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if (![collection isKindOfClass:[PHAssetCollection class]]) continue;
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// 过滤空相册
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if (collection.estimatedAssetCount <= 0) continue;
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if ([self isCameraRollAlbum:collection]) {
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PHFetchResult *fetchResult = [PHAsset fetchAssetsInAssetCollection:collection options:option];
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model = [self modelWithResult:fetchResult collection:collection isCameraRoll:YES needFetchAssets:needFetchAssets options:option];
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if (completion) completion(model);
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break;
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}
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}
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}
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- (void)getAllAlbums:(BOOL)allowPickingVideo allowPickingImage:(BOOL)allowPickingImage needFetchAssets:(BOOL)needFetchAssets completion:(void (^)(NSArray<TZAlbumModel *> *))completion {
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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config.allowPickingVideo = allowPickingVideo;
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config.allowPickingImage = allowPickingImage;
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[self getAllAlbumsWithFetchAssets:needFetchAssets completion:completion];
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}
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- (void)getAllAlbumsWithFetchAssets:(BOOL)needFetchAssets completion:(void (^)(NSArray<TZAlbumModel *> *))completion {
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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NSMutableArray *albumArr = [NSMutableArray array];
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PHFetchOptions *option = [[PHFetchOptions alloc] init];
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if (!config.allowPickingVideo) option.predicate = [NSPredicate predicateWithFormat:@"mediaType == %ld", PHAssetMediaTypeImage];
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if (!config.allowPickingImage) option.predicate = [NSPredicate predicateWithFormat:@"mediaType == %ld",
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PHAssetMediaTypeVideo];
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// option.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"modificationDate" ascending:self.sortAscendingByModificationDate]];
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if (!self.sortAscendingByModificationDate) {
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option.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:self.sortAscendingByModificationDate]];
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}
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// 我的照片流 1.6.10重新加入..
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PHFetchResult *myPhotoStreamAlbum = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumMyPhotoStream options:nil];
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PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAny options:nil];
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PHFetchResult *topLevelUserCollections = [PHCollectionList fetchTopLevelUserCollectionsWithOptions:nil];
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PHFetchResult *syncedAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumSyncedAlbum options:nil];
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PHFetchResult *sharedAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumCloudShared options:nil];
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NSArray *allAlbums = @[myPhotoStreamAlbum,smartAlbums,topLevelUserCollections,syncedAlbums,sharedAlbums];
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for (PHFetchResult *fetchResult in allAlbums) {
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for (PHAssetCollection *collection in fetchResult) {
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// 有可能是PHCollectionList类的的对象，过滤掉
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if (![collection isKindOfClass:[PHAssetCollection class]]) continue;
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// 过滤空相册
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if (collection.estimatedAssetCount <= 0 && ![self isCameraRollAlbum:collection]) continue;
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PHFetchResult *fetchResult = [PHAsset fetchAssetsInAssetCollection:collection options:option];
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if (fetchResult.count < 1 && ![self isCameraRollAlbum:collection]) continue;
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if ([self.pickerDelegate respondsToSelector:@selector(isAlbumCanSelect:result:)]) {
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if (![self.pickerDelegate isAlbumCanSelect:collection.localizedTitle result:fetchResult]) {
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continue;
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}
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}
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if (collection.assetCollectionSubtype == PHAssetCollectionSubtypeSmartAlbumAllHidden) continue;
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if (collection.assetCollectionSubtype == 1000000201) continue; //『最近删除』相册
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if ([self isCameraRollAlbum:collection]) {
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[albumArr insertObject:[self modelWithResult:fetchResult collection:collection isCameraRoll:YES needFetchAssets:needFetchAssets options:option] atIndex:0];
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} else {
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[albumArr addObject:[self modelWithResult:fetchResult collection:collection isCameraRoll:NO needFetchAssets:needFetchAssets options:option]];
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}
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}
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}
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if (completion) {
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completion(albumArr);
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}
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}
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#pragma mark - Get Assets
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/// Get Assets 获得照片数组
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- (void)getAssetsFromFetchResult:(PHFetchResult *)result allowPickingVideo:(BOOL)allowPickingVideo allowPickingImage:(BOOL)allowPickingImage completion:(void (^)(NSArray<TZAssetModel *> *))completion {
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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config.allowPickingVideo = allowPickingVideo;
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config.allowPickingImage = allowPickingImage;
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return [self getAssetsFromFetchResult:result completion:completion];
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}
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- (void)getAssetsFromFetchResult:(PHFetchResult *)result completion:(void (^)(NSArray<TZAssetModel *> *))completion {
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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NSMutableArray *photoArr = [NSMutableArray array];
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[result enumerateObjectsUsingBlock:^(PHAsset *asset, NSUInteger idx, BOOL * _Nonnull stop) {
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TZAssetModel *model = [self assetModelWithAsset:asset allowPickingVideo:config.allowPickingVideo allowPickingImage:config.allowPickingImage];
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if (model) {
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[photoArr addObject:model];
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}
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}];
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if (completion) completion(photoArr);
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}
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/// Get asset at index 获得下标为index的单个照片
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/// if index beyond bounds, return nil in callback 如果索引越界, 在回调中返回 nil
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- (void)getAssetFromFetchResult:(PHFetchResult *)result atIndex:(NSInteger)index allowPickingVideo:(BOOL)allowPickingVideo allowPickingImage:(BOOL)allowPickingImage completion:(void (^)(TZAssetModel *))completion {
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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config.allowPickingVideo = allowPickingVideo;
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config.allowPickingImage = allowPickingImage;
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[self getAssetFromFetchResult:result atIndex:index allowPickingVideo:config.allowPickingVideo allowPickingImage:config.allowPickingImage completion:completion];
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}
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- (void)getAssetFromFetchResult:(PHFetchResult *)result atIndex:(NSInteger)index completion:(void (^)(TZAssetModel *))completion {
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PHAsset *asset;
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@try {
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asset = result[index];
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}
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@catch (NSException* e) {
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if (completion) completion(nil);
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return;
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}
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TZImagePickerConfig *config = [TZImagePickerConfig sharedInstance];
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TZAssetModel *model = [self assetModelWithAsset:asset allowPickingVideo:config.allowPickingVideo allowPickingImage:config.allowPickingImage];
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if (completion) completion(model);
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}
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- (TZAssetModel *)assetModelWithAsset:(PHAsset *)asset allowPickingVideo:(BOOL)allowPickingVideo allowPickingImage:(BOOL)allowPickingImage {
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BOOL canSelect = YES;
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if ([self.pickerDelegate respondsToSelector:@selector(isAssetCanSelect:)]) {
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canSelect = [self.pickerDelegate isAssetCanSelect:asset];
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}
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if ([self.pickerDelegate respondsToSelector:@selector(isAssetCanBeDisplayed:)]){
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canSelect = [self.pickerDelegate isAssetCanBeDisplayed:asset];
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}
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if (!canSelect) return nil;
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TZAssetModel *model;
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TZAssetModelMediaType type = [self getAssetType:asset];
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if (!allowPickingVideo && type == TZAssetModelMediaTypeVideo) return nil;
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if (!allowPickingImage && type == TZAssetModelMediaTypePhoto) return nil;
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if (!allowPickingImage && type == TZAssetModelMediaTypePhotoGif) return nil;
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PHAsset *phAsset = (PHAsset *)asset;
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if (self.hideWhenCanNotSelect) {
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// 过滤掉尺寸不满足要求的图片
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if (![self isPhotoSelectableWithAsset:phAsset]) {
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return nil;
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}
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}
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NSString *timeLength = type == TZAssetModelMediaTypeVideo ? [NSString stringWithFormat:@"%0.0f",phAsset.duration] : @"";
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timeLength = [self getNewTimeFromDurationSecond:timeLength.integerValue];
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model = [TZAssetModel modelWithAsset:asset type:type timeLength:timeLength];
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return model;
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}
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- (TZAssetModelMediaType)getAssetType:(PHAsset *)asset {
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TZAssetModelMediaType type = TZAssetModelMediaTypePhoto;
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PHAsset *phAsset = (PHAsset *)asset;
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if (phAsset.mediaType == PHAssetMediaTypeVideo) type = TZAssetModelMediaTypeVideo;
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else if (phAsset.mediaType == PHAssetMediaTypeAudio) type = TZAssetModelMediaTypeAudio;
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else if (phAsset.mediaType == PHAssetMediaTypeImage) {
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if (@available(iOS 9.1, *)) {
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// if (asset.mediaSubtypes == PHAssetMediaSubtypePhotoLive) type = TZAssetModelMediaTypeLivePhoto;
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}
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// Gif
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if ([[phAsset valueForKey:@"filename"] hasSuffix:@"GIF"]) {
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type = TZAssetModelMediaTypePhotoGif;
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}
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}
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return type;
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}
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- (NSString *)getNewTimeFromDurationSecond:(NSInteger)duration {
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NSString *newTime;
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if (duration < 10) {
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newTime = [NSString stringWithFormat:@"0:0%zd",duration];
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} else if (duration < 60) {
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newTime = [NSString stringWithFormat:@"0:%zd",duration];
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} else {
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NSInteger min = duration / 60;
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NSInteger sec = duration - (min * 60);
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if (sec < 10) {
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newTime = [NSString stringWithFormat:@"%zd:0%zd",min,sec];
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} else {
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newTime = [NSString stringWithFormat:@"%zd:%zd",min,sec];
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}
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}
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return newTime;
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}
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/// Get photo bytes 获得一组照片的大小
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- (void)getPhotosBytesWithArray:(NSArray *)photos completion:(void (^)(NSString *totalBytes))completion {
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if (!photos || !photos.count) {
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if (completion) completion(@"0B");
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return;
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}
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__block NSInteger dataLength = 0;
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__block NSInteger assetCount = 0;
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for (NSInteger i = 0; i < photos.count; i++) {
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TZAssetModel *model = photos[i];
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PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
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options.resizeMode = PHImageRequestOptionsResizeModeFast;
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options.networkAccessAllowed = YES;
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if (model.type == TZAssetModelMediaTypePhotoGif) {
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options.version = PHImageRequestOptionsVersionOriginal;
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}
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[[PHImageManager defaultManager] requestImageDataForAsset:model.asset options:options resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
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if (model.type != TZAssetModelMediaTypeVideo) dataLength += imageData.length;
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assetCount ++;
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if (assetCount >= photos.count) {
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NSString *bytes = [self getBytesFromDataLength:dataLength];
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if (completion) completion(bytes);
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}
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}];
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}
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}
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- (NSString *)getBytesFromDataLength:(NSInteger)dataLength {
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NSString *bytes;
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if (dataLength >= 0.1 * (1024 * 1024)) {
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bytes = [NSString stringWithFormat:@"%0.1fM",dataLength/1024/1024.0];
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} else if (dataLength >= 1024) {
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bytes = [NSString stringWithFormat:@"%0.0fK",dataLength/1024.0];
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} else {
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bytes = [NSString stringWithFormat:@"%zdB",dataLength];
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}
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return bytes;
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}
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#pragma mark - Get Photo
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/// Get photo 获得照片本身
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- (PHImageRequestID)getPhotoWithAsset:(PHAsset *)asset completion:(void (^)(UIImage *, NSDictionary *, BOOL isDegraded))completion {
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return [self getPhotoWithAsset:asset completion:completion progressHandler:nil networkAccessAllowed:YES];
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}
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- (PHImageRequestID)getPhotoWithAsset:(PHAsset *)asset photoWidth:(CGFloat)photoWidth completion:(void (^)(UIImage *photo,NSDictionary *info,BOOL isDegraded))completion {
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return [self getPhotoWithAsset:asset photoWidth:photoWidth completion:completion progressHandler:nil networkAccessAllowed:YES];
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}
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- (PHImageRequestID)getPhotoWithAsset:(PHAsset *)asset completion:(void (^)(UIImage *photo,NSDictionary *info,BOOL isDegraded))completion progressHandler:(void (^)(double progress, NSError *error, BOOL *stop, NSDictionary *info))progressHandler networkAccessAllowed:(BOOL)networkAccessAllowed {
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CGFloat fullScreenWidth = TZScreenWidth;
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if (_photoPreviewMaxWidth > 0 && fullScreenWidth > _photoPreviewMaxWidth) {
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fullScreenWidth = _photoPreviewMaxWidth;
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}
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return [self getPhotoWithAsset:asset photoWidth:fullScreenWidth completion:completion progressHandler:progressHandler networkAccessAllowed:networkAccessAllowed];
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}
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- (PHImageRequestID)requestImageDataForAsset:(PHAsset *)asset completion:(void (^)(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info))completion progressHandler:(void (^)(double progress, NSError *error, BOOL *stop, NSDictionary *info))progressHandler {
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PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
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options.progressHandler = ^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
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dispatch_async(dispatch_get_main_queue(), ^{
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if (progressHandler) {
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progressHandler(progress, error, stop, info);
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}
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});
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};
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options.networkAccessAllowed = YES;
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options.resizeMode = PHImageRequestOptionsResizeModeFast;
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int32_t imageRequestID = [[PHImageManager defaultManager] requestImageDataForAsset:asset options:options resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
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if (completion) completion(imageData,dataUTI,orientation,info);
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}];
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return imageRequestID;
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}
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- (PHImageRequestID)getPhotoWithAsset:(PHAsset *)asset photoWidth:(CGFloat)photoWidth completion:(void (^)(UIImage *photo,NSDictionary *info,BOOL isDegraded))completion progressHandler:(void (^)(double progress, NSError *error, BOOL *stop, NSDictionary *info))progressHandler networkAccessAllowed:(BOOL)networkAccessAllowed {
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CGSize imageSize;
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if (photoWidth < TZScreenWidth && photoWidth < _photoPreviewMaxWidth) {
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imageSize = AssetGridThumbnailSize;
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} else {
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PHAsset *phAsset = (PHAsset *)asset;
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CGFloat aspectRatio = phAsset.pixelWidth / (CGFloat)phAsset.pixelHeight;
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CGFloat pixelWidth = photoWidth * TZScreenScale;
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// 超宽图片
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if (aspectRatio > 1.8) {
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pixelWidth = pixelWidth * aspectRatio;
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}
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// 超高图片
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if (aspectRatio < 0.2) {
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pixelWidth = pixelWidth * 0.5;
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}
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CGFloat pixelHeight = pixelWidth / aspectRatio;
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imageSize = CGSizeMake(pixelWidth, pixelHeight);
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}
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// 修复获取图片时出现的瞬间内存过高问题
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// 下面两行代码，来自hsjcom，他的github是：https://github.com/hsjcom 表示感谢
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PHImageRequestOptions *option = [[PHImageRequestOptions alloc] init];
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option.resizeMode = PHImageRequestOptionsResizeModeFast;
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int32_t imageRequestID = [[PHImageManager defaultManager] requestImageForAsset:asset targetSize:imageSize contentMode:PHImageContentModeAspectFill options:option resultHandler:^(UIImage *result, NSDictionary *info) {
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BOOL cancelled = [[info objectForKey:PHImageCancelledKey] boolValue];
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if (!cancelled && result) {
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result = [self fixOrientation:result];
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if (completion) completion(result,info,[[info objectForKey:PHImageResultIsDegradedKey] boolValue]);
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}
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// Download image from iCloud / 从iCloud下载图片
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if ([info objectForKey:PHImageResultIsInCloudKey] && !result && networkAccessAllowed) {
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PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
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options.progressHandler = ^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
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dispatch_async(dispatch_get_main_queue(), ^{
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if (progressHandler) {
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progressHandler(progress, error, stop, info);
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}
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});
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};
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options.networkAccessAllowed = YES;
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options.resizeMode = PHImageRequestOptionsResizeModeFast;
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[[PHImageManager defaultManager] requestImageDataForAsset:asset options:options resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
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UIImage *resultImage = [UIImage imageWithData:imageData];
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if (![TZImagePickerConfig sharedInstance].notScaleImage) {
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resultImage = [self scaleImage:resultImage toSize:imageSize];
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}
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if (!resultImage && result) {
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resultImage = result;
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}
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resultImage = [self fixOrientation:resultImage];
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if (completion) completion(resultImage,info,NO);
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}];
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}
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}];
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return imageRequestID;
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}
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/// Get postImage / 获取封面图
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- (PHImageRequestID)getPostImageWithAlbumModel:(TZAlbumModel *)model completion:(void (^)(UIImage *))completion {
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id asset = [model.result lastObject];
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if (!self.sortAscendingByModificationDate) {
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asset = [model.result firstObject];
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}
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if (!asset) {
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return -1;
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}
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return [[TZImageManager manager] getPhotoWithAsset:asset photoWidth:80 completion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
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if (completion) completion(photo);
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}];
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}
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/// Get Original Photo / 获取原图
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- (PHImageRequestID)getOriginalPhotoWithAsset:(PHAsset *)asset completion:(void (^)(UIImage *photo,NSDictionary *info))completion {
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return [self getOriginalPhotoWithAsset:asset newCompletion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
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if (completion) {
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completion(photo,info);
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}
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}];
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}
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- (PHImageRequestID)getOriginalPhotoWithAsset:(PHAsset *)asset newCompletion:(void (^)(UIImage *photo,NSDictionary *info,BOOL isDegraded))completion {
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return [self getOriginalPhotoWithAsset:asset progressHandler:nil newCompletion:completion];
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}
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- (PHImageRequestID)getOriginalPhotoWithAsset:(PHAsset *)asset progressHandler:(void (^)(double progress, NSError *error, BOOL *stop, NSDictionary *info))progressHandler newCompletion:(void (^)(UIImage *photo,NSDictionary *info,BOOL isDegraded))completion {
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PHImageRequestOptions *option = [[PHImageRequestOptions alloc]init];
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option.networkAccessAllowed = YES;
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if (progressHandler) {
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[option setProgressHandler:progressHandler];
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}
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option.resizeMode = PHImageRequestOptionsResizeModeFast;
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return [[PHImageManager defaultManager] requestImageDataForAsset:asset options:option resultHandler:^(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info) {
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BOOL cancelled = [[info objectForKey:PHImageCancelledKey] boolValue];
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if (!cancelled && imageData) {
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UIImage *result = [self fixOrientation:[UIImage imageWithData:imageData]];
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BOOL isDegraded = [[info objectForKey:PHImageResultIsDegradedKey] boolValue];
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if (completion) completion(result,info,isDegraded);
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}
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}];
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}
|
|
- (PHImageRequestID)getOriginalPhotoDataWithAsset:(PHAsset *)asset completion:(void (^)(NSData *data,NSDictionary *info,BOOL isDegraded))completion {
|
return [self getOriginalPhotoDataWithAsset:asset progressHandler:nil completion:completion];
|
}
|
|
- (PHImageRequestID)getOriginalPhotoDataWithAsset:(PHAsset *)asset progressHandler:(void (^)(double progress, NSError *error, BOOL *stop, NSDictionary *info))progressHandler completion:(void (^)(NSData *data,NSDictionary *info,BOOL isDegraded))completion {
|
PHImageRequestOptions *option = [[PHImageRequestOptions alloc] init];
|
option.networkAccessAllowed = YES;
|
if ([[asset valueForKey:@"filename"] hasSuffix:@"GIF"]) {
|
// if version isn't PHImageRequestOptionsVersionOriginal, the gif may cann't play
|
option.version = PHImageRequestOptionsVersionOriginal;
|
}
|
[option setProgressHandler:progressHandler];
|
option.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
|
return [[PHImageManager defaultManager] requestImageDataForAsset:asset options:option resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {
|
BOOL cancelled = [[info objectForKey:PHImageCancelledKey] boolValue];
|
if (!cancelled && imageData) {
|
if (completion) completion(imageData,info,NO);
|
}
|
}];
|
}
|
|
- (UIImage *)getImageWithVideoURL:(NSURL *)videoURL {
|
AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURL options:nil];
|
if (!asset) {
|
return nil;
|
}
|
AVAssetImageGenerator *generator =[[AVAssetImageGenerator alloc] initWithAsset:asset];
|
generator.appliesPreferredTrackTransform = YES;
|
generator.apertureMode = AVAssetImageGeneratorApertureModeEncodedPixels;
|
|
CFTimeInterval time = 0.1;
|
CGImageRef imageRef = [generator copyCGImageAtTime:CMTimeMake(time, 60) actualTime:NULL error:nil];
|
UIImage *image = [[UIImage alloc] initWithCGImage:imageRef];
|
CGImageRelease(imageRef);
|
return image;
|
}
|
|
#pragma mark - Save photo
|
|
- (void)savePhotoWithImage:(UIImage *)image completion:(void (^)(PHAsset *asset, NSError *error))completion {
|
[self savePhotoWithImage:image location:nil completion:completion];
|
}
|
|
- (void)savePhotoWithImage:(UIImage *)image location:(CLLocation *)location completion:(void (^)(PHAsset *asset, NSError *error))completion {
|
__block NSString *localIdentifier = nil;
|
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
|
PHAssetChangeRequest *request = [PHAssetChangeRequest creationRequestForAssetFromImage:image];
|
localIdentifier = request.placeholderForCreatedAsset.localIdentifier;
|
if (location) {
|
request.location = location;
|
}
|
request.creationDate = [NSDate date];
|
} completionHandler:^(BOOL success, NSError *error) {
|
dispatch_async(dispatch_get_main_queue(), ^{
|
if (success && completion && localIdentifier) {
|
[self fetchAssetByIocalIdentifier:localIdentifier retryCount:10 completion:completion];
|
} else {
|
if (error) {
|
NSLog(@"保存照片出错:%@",error.localizedDescription);
|
}
|
if (completion) {
|
completion(nil, error);
|
}
|
}
|
});
|
}];
|
}
|
|
- (void)savePhotoWithImage:(UIImage *)image meta:(NSDictionary *)meta location:(CLLocation *)location completion:(void (^)(PHAsset *asset, NSError *error))completion {
|
NSData *imageData = UIImageJPEGRepresentation(image, 1.0f);
|
CGImageSourceRef source = CGImageSourceCreateWithData((__bridge CFDataRef)imageData, NULL);
|
NSDateFormatter *formater = [[NSDateFormatter alloc] init];
|
[formater setDateFormat:@"yyyy-MM-dd-HH:mm:ss-SSS"];
|
NSString *path = [NSTemporaryDirectory() stringByAppendingFormat:@"image-%@.jpg", [formater stringFromDate:[NSDate date]]];
|
NSURL *tmpURL = [NSURL fileURLWithPath:path];
|
CGImageDestinationRef destination = CGImageDestinationCreateWithURL((__bridge CFURLRef)tmpURL, kUTTypeJPEG, 1, NULL);
|
CGImageDestinationAddImageFromSource(destination, source, 0, (__bridge CFDictionaryRef)meta);
|
CGImageDestinationFinalize(destination);
|
CFRelease(source);
|
CFRelease(destination);
|
|
__block NSString *localIdentifier = nil;
|
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
|
PHAssetChangeRequest *request = [PHAssetChangeRequest creationRequestForAssetFromImageAtFileURL:tmpURL];
|
localIdentifier = request.placeholderForCreatedAsset.localIdentifier;
|
if (location) {
|
request.location = location;
|
}
|
request.creationDate = [NSDate date];
|
} completionHandler:^(BOOL success, NSError *error) {
|
[[NSFileManager defaultManager] removeItemAtPath:path error:nil];
|
dispatch_async(dispatch_get_main_queue(), ^{
|
if (success && completion && localIdentifier) {
|
[self fetchAssetByIocalIdentifier:localIdentifier retryCount:10 completion:completion];
|
} else {
|
if (error) {
|
NSLog(@"保存照片出错:%@",error.localizedDescription);
|
}
|
if (completion) {
|
completion(nil, error);
|
}
|
}
|
});
|
}];
|
}
|
|
- (void)fetchAssetByIocalIdentifier:(NSString *)localIdentifier retryCount:(NSInteger)retryCount completion:(void (^)(PHAsset *asset, NSError *error))completion {
|
PHAsset *asset = [[PHAsset fetchAssetsWithLocalIdentifiers:@[localIdentifier] options:nil] firstObject];
|
if (asset || retryCount <= 0) {
|
if (completion) {
|
completion(asset, nil);
|
}
|
return;
|
}
|
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
|
[self fetchAssetByIocalIdentifier:localIdentifier retryCount:retryCount - 1 completion:completion];
|
});
|
}
|
|
#pragma mark - Save video
|
|
- (void)saveVideoWithUrl:(NSURL *)url completion:(void (^)(PHAsset *asset, NSError *error))completion {
|
[self saveVideoWithUrl:url location:nil completion:completion];
|
}
|
|
- (void)saveVideoWithUrl:(NSURL *)url location:(CLLocation *)location completion:(void (^)(PHAsset *asset, NSError *error))completion {
|
__block NSString *localIdentifier = nil;
|
[[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
|
PHAssetChangeRequest *request = [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:url];
|
localIdentifier = request.placeholderForCreatedAsset.localIdentifier;
|
if (location) {
|
request.location = location;
|
}
|
request.creationDate = [NSDate date];
|
} completionHandler:^(BOOL success, NSError *error) {
|
dispatch_async(dispatch_get_main_queue(), ^{
|
if (success && completion && localIdentifier) {
|
[self fetchAssetByIocalIdentifier:localIdentifier retryCount:10 completion:completion];
|
} else {
|
if (error) {
|
NSLog(@"保存视频出错:%@",error.localizedDescription);
|
}
|
if (completion) {
|
completion(nil, error);
|
}
|
}
|
});
|
}];
|
}
|
|
#pragma mark - Get Video
|
|
/// Get Video / 获取视频
|
- (void)getVideoWithAsset:(PHAsset *)asset completion:(void (^)(AVPlayerItem *, NSDictionary *))completion {
|
[self getVideoWithAsset:asset progressHandler:nil completion:completion];
|
}
|
|
- (void)getVideoWithAsset:(PHAsset *)asset progressHandler:(void (^)(double progress, NSError *error, BOOL *stop, NSDictionary *info))progressHandler completion:(void (^)(AVPlayerItem *, NSDictionary *))completion {
|
PHVideoRequestOptions *option = [[PHVideoRequestOptions alloc] init];
|
option.networkAccessAllowed = YES;
|
option.progressHandler = ^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
|
dispatch_async(dispatch_get_main_queue(), ^{
|
if (progressHandler) {
|
progressHandler(progress, error, stop, info);
|
}
|
});
|
};
|
[[PHImageManager defaultManager] requestPlayerItemForVideo:asset options:option resultHandler:^(AVPlayerItem *playerItem, NSDictionary *info) {
|
if (completion) completion(playerItem,info);
|
}];
|
}
|
|
#pragma mark - Export video
|
|
/// Export Video / 导出视频
|
- (void)getVideoOutputPathWithAsset:(PHAsset *)asset success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
[self getVideoOutputPathWithAsset:asset presetName:AVAssetExportPresetMediumQuality success:success failure:failure];
|
}
|
|
- (void)getVideoOutputPathWithAsset:(PHAsset *)asset presetName:(NSString *)presetName success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
[self getVideoOutputPathWithAsset:asset presetName:presetName timeRange:kCMTimeRangeZero success:success failure:failure];
|
}
|
|
- (void)startExportVideoWithVideoAsset:(AVURLAsset *)videoAsset presetName:(NSString *)presetName success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
[self startExportVideoWithVideoAsset:videoAsset timeRange:kCMTimeRangeZero presetName:presetName success:success failure:failure];
|
}
|
|
- (void)getVideoOutputPathWithAsset:(PHAsset *)asset presetName:(NSString *)presetName timeRange:(CMTimeRange)timeRange success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
if (@available(iOS 14.0, *)) {
|
[self requestVideoOutputPathWithAsset:asset presetName:presetName timeRange:timeRange success:success failure:failure];
|
return;
|
}
|
[[PHImageManager defaultManager] requestAVAssetForVideo:asset options:[self getVideoRequestOptions] resultHandler:^(AVAsset* avasset, AVAudioMix* audioMix, NSDictionary* info){
|
// NSLog(@"Info:\n%@",info);
|
AVURLAsset *videoAsset = (AVURLAsset*)avasset;
|
// NSLog(@"AVAsset URL: %@",myAsset.URL);
|
[self startExportVideoWithVideoAsset:videoAsset timeRange:timeRange presetName:presetName success:success failure:failure];
|
}];
|
}
|
|
- (void)startExportVideoWithVideoAsset:(AVURLAsset *)videoAsset timeRange:(CMTimeRange)timeRange presetName:(NSString *)presetName success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
if (!presetName) {
|
presetName = AVAssetExportPresetMediumQuality;
|
}
|
// Find compatible presets by video asset.
|
NSArray *presets = [AVAssetExportSession exportPresetsCompatibleWithAsset:videoAsset];
|
// Begin to compress video
|
// Now we just compress to low resolution if it supports
|
// If you need to upload to the server, but server does't support to upload by streaming,
|
// You can compress the resolution to lower. Or you can support more higher resolution.
|
if ([presets containsObject:presetName]) {
|
AVAssetExportSession *session = [[AVAssetExportSession alloc] initWithAsset:videoAsset presetName:presetName];
|
NSString *outputPath = [self getVideoOutputPath];
|
|
// Optimize for network use.
|
session.shouldOptimizeForNetworkUse = true;
|
if (!CMTimeRangeEqual(timeRange, kCMTimeRangeZero)) {
|
session.timeRange = timeRange;
|
}
|
|
NSArray *supportedTypeArray = session.supportedFileTypes;
|
if ([supportedTypeArray containsObject:AVFileTypeMPEG4]) {
|
session.outputFileType = AVFileTypeMPEG4;
|
} else if (supportedTypeArray.count == 0) {
|
if (failure) {
|
failure(@"该视频类型暂不支持导出", nil);
|
}
|
NSLog(@"No supported file types 视频类型暂不支持导出");
|
return;
|
} else {
|
session.outputFileType = [supportedTypeArray objectAtIndex:0];
|
if (videoAsset.URL && videoAsset.URL.lastPathComponent) {
|
outputPath = [outputPath stringByReplacingOccurrencesOfString:@".mp4" withString:[NSString stringWithFormat:@"-%@", videoAsset.URL.lastPathComponent]];
|
}
|
}
|
// NSLog(@"video outputPath = %@",outputPath);
|
session.outputURL = [NSURL fileURLWithPath:outputPath];
|
|
if (![[NSFileManager defaultManager] fileExistsAtPath:[NSHomeDirectory() stringByAppendingFormat:@"/tmp"]]) {
|
[[NSFileManager defaultManager] createDirectoryAtPath:[NSHomeDirectory() stringByAppendingFormat:@"/tmp"] withIntermediateDirectories:YES attributes:nil error:nil];
|
}
|
|
if ([TZImagePickerConfig sharedInstance].needFixComposition) {
|
AVMutableVideoComposition *videoComposition = [self fixedCompositionWithAsset:videoAsset];
|
if (videoComposition.renderSize.width) {
|
// 修正视频转向
|
session.videoComposition = videoComposition;
|
}
|
}
|
|
// Begin to export video to the output path asynchronously.
|
[session exportAsynchronouslyWithCompletionHandler:^(void) {
|
[self handleVideoExportResult:session outputPath:outputPath success:success failure:failure];
|
}];
|
} else {
|
if (failure) {
|
NSString *errorMessage = [NSString stringWithFormat:@"当前设备不支持该预设:%@", presetName];
|
failure(errorMessage, nil);
|
}
|
}
|
}
|
|
- (void)requestVideoOutputPathWithAsset:(PHAsset *)asset presetName:(NSString *)presetName success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
[self requestVideoOutputPathWithAsset:asset presetName:presetName timeRange:kCMTimeRangeZero success:success failure:failure];
|
}
|
|
- (void)requestVideoOutputPathWithAsset:(PHAsset *)asset presetName:(NSString *)presetName timeRange:(CMTimeRange)timeRange success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
if (!presetName) {
|
presetName = AVAssetExportPresetMediumQuality;
|
}
|
[[PHImageManager defaultManager] requestExportSessionForVideo:asset options:[self getVideoRequestOptions] exportPreset:presetName resultHandler:^(AVAssetExportSession *_Nullable exportSession, NSDictionary *_Nullable info) {
|
NSString *outputPath = [self getVideoOutputPath];
|
exportSession.outputURL = [NSURL fileURLWithPath:outputPath];
|
exportSession.shouldOptimizeForNetworkUse = NO;
|
exportSession.outputFileType = AVFileTypeMPEG4;
|
if (!CMTimeRangeEqual(timeRange, kCMTimeRangeZero)) {
|
exportSession.timeRange = timeRange;
|
}
|
[exportSession exportAsynchronouslyWithCompletionHandler:^{
|
[self handleVideoExportResult:exportSession outputPath:outputPath success:success failure:failure];
|
}];
|
}];
|
}
|
|
- (void)requestVideoURLWithAsset:(PHAsset *)asset success:(void (^)(NSURL *videoURL))success failure:(void (^)(NSDictionary* info))failure {
|
[[PHImageManager defaultManager] requestAVAssetForVideo:asset options:[self getVideoRequestOptions] resultHandler:^(AVAsset* avasset, AVAudioMix* audioMix, NSDictionary* info){
|
// NSLog(@"AVAsset URL: %@",myAsset.URL);
|
if ([avasset isKindOfClass:[AVURLAsset class]]) {
|
NSURL *url = [(AVURLAsset *)avasset URL];
|
if (success) {
|
success(url);
|
}
|
} else if (failure) {
|
failure(info);
|
}
|
}];
|
}
|
|
- (void)handleVideoExportResult:(AVAssetExportSession *)session outputPath:(NSString *)outputPath success:(void (^)(NSString *outputPath))success failure:(void (^)(NSString *errorMessage, NSError *error))failure {
|
dispatch_async(dispatch_get_main_queue(), ^{
|
switch (session.status) {
|
case AVAssetExportSessionStatusUnknown: {
|
NSLog(@"AVAssetExportSessionStatusUnknown");
|
} break;
|
case AVAssetExportSessionStatusWaiting: {
|
NSLog(@"AVAssetExportSessionStatusWaiting");
|
} break;
|
case AVAssetExportSessionStatusExporting: {
|
NSLog(@"AVAssetExportSessionStatusExporting");
|
} break;
|
case AVAssetExportSessionStatusCompleted: {
|
NSLog(@"AVAssetExportSessionStatusCompleted");
|
if (success) {
|
success(outputPath);
|
}
|
} break;
|
case AVAssetExportSessionStatusFailed: {
|
NSLog(@"AVAssetExportSessionStatusFailed");
|
if (failure) {
|
failure(@"视频导出失败", session.error);
|
}
|
} break;
|
case AVAssetExportSessionStatusCancelled: {
|
NSLog(@"AVAssetExportSessionStatusCancelled");
|
if (failure) {
|
failure(@"导出任务已被取消", nil);
|
}
|
} break;
|
default: break;
|
}
|
});
|
}
|
|
- (PHVideoRequestOptions *)getVideoRequestOptions {
|
PHVideoRequestOptions* options = [[PHVideoRequestOptions alloc] init];
|
options.deliveryMode = PHVideoRequestOptionsDeliveryModeAutomatic;
|
options.networkAccessAllowed = YES;
|
return options;
|
}
|
|
- (NSString *)getVideoOutputPath {
|
NSDateFormatter *formater = [[NSDateFormatter alloc] init];
|
[formater setDateFormat:@"yyyy-MM-dd-HH-mm-ss-SSS"];
|
NSString *outputPath = [NSHomeDirectory() stringByAppendingFormat:@"/tmp/video-%@-%d.mp4", [formater stringFromDate:[NSDate date]], arc4random_uniform(10000000)];
|
return outputPath;
|
}
|
|
- (BOOL)isCameraRollAlbum:(PHAssetCollection *)metadata {
|
NSString *versionStr = [[UIDevice currentDevice].systemVersion stringByReplacingOccurrencesOfString:@"." withString:@""];
|
if (versionStr.length <= 1) {
|
versionStr = [versionStr stringByAppendingString:@"00"];
|
} else if (versionStr.length <= 2) {
|
versionStr = [versionStr stringByAppendingString:@"0"];
|
}
|
CGFloat version = versionStr.floatValue;
|
// 目前已知8.0.0 ~ 8.0.2系统，拍照后的图片会保存在最近添加中
|
if (version >= 800 && version <= 802) {
|
return ((PHAssetCollection *)metadata).assetCollectionSubtype == PHAssetCollectionSubtypeSmartAlbumRecentlyAdded;
|
} else {
|
return ((PHAssetCollection *)metadata).assetCollectionSubtype == PHAssetCollectionSubtypeSmartAlbumUserLibrary;
|
}
|
}
|
|
/// 检查照片大小是否满足最小要求
|
- (BOOL)isPhotoSelectableWithAsset:(PHAsset *)asset {
|
CGSize photoSize = CGSizeMake(asset.pixelWidth, asset.pixelHeight);
|
if (self.minPhotoWidthSelectable > photoSize.width || self.minPhotoHeightSelectable > photoSize.height) {
|
return NO;
|
}
|
return YES;
|
}
|
|
/// 检查照片能否被选中
|
- (BOOL)isAssetCannotBeSelected:(PHAsset *)asset {
|
if ([self.pickerDelegate respondsToSelector:@selector(isAssetCanBeSelected:)]) {
|
BOOL canSelectAsset = [self.pickerDelegate isAssetCanBeSelected:asset];
|
return !canSelectAsset;
|
}
|
return NO;
|
}
|
|
#pragma mark - Private Method
|
|
- (TZAlbumModel *)modelWithResult:(PHFetchResult *)result collection:(PHAssetCollection *)collection isCameraRoll:(BOOL)isCameraRoll needFetchAssets:(BOOL)needFetchAssets options:(PHFetchOptions *)options {
|
TZAlbumModel *model = [[TZAlbumModel alloc] init];
|
[model setResult:result needFetchAssets:needFetchAssets];
|
model.name = collection.localizedTitle;
|
model.collection = collection;
|
model.options = options;
|
model.isCameraRoll = isCameraRoll;
|
model.count = result.count;
|
return model;
|
}
|
|
/// 缩放图片至新尺寸
|
- (UIImage *)scaleImage:(UIImage *)image toSize:(CGSize)size {
|
if (image.size.width > size.width) {
|
UIGraphicsBeginImageContext(size);
|
[image drawInRect:CGRectMake(0, 0, size.width, size.height)];
|
UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
|
UIGraphicsEndImageContext();
|
return newImage;
|
|
/* 好像不怎么管用：https://mp.weixin.qq.com/s/CiqMlEIp1Ir2EJSDGgMooQ
|
CGFloat maxPixelSize = MAX(size.width, size.height);
|
CGImageSourceRef sourceRef = CGImageSourceCreateWithData((__bridge CFDataRef)UIImageJPEGRepresentation(image, 0.9), nil);
|
NSDictionary *options = @{(__bridge id)kCGImageSourceCreateThumbnailFromImageAlways:(__bridge id)kCFBooleanTrue,
|
(__bridge id)kCGImageSourceThumbnailMaxPixelSize:[NSNumber numberWithFloat:maxPixelSize]
|
};
|
CGImageRef imageRef = CGImageSourceCreateImageAtIndex(sourceRef, 0, (__bridge CFDictionaryRef)options);
|
UIImage *newImage = [UIImage imageWithCGImage:imageRef scale:2 orientation:image.imageOrientation];
|
CGImageRelease(imageRef);
|
CFRelease(sourceRef);
|
return newImage;
|
*/
|
} else {
|
return image;
|
}
|
}
|
|
/// 判断asset是否是视频
|
- (BOOL)isVideo:(PHAsset *)asset {
|
return asset.mediaType == PHAssetMediaTypeVideo;
|
}
|
|
- (TZAssetModel *)createModelWithAsset:(PHAsset *)asset {
|
TZAssetModelMediaType type = [[TZImageManager manager] getAssetType:asset];
|
NSString *timeLength = type == TZAssetModelMediaTypeVideo ? [NSString stringWithFormat:@"%0.0f",asset.duration] : @"";
|
timeLength = [[TZImageManager manager] getNewTimeFromDurationSecond:timeLength.integerValue];
|
TZAssetModel *model = [TZAssetModel modelWithAsset:asset type:type timeLength:timeLength];
|
return model;
|
}
|
|
/// 获取优化后的视频转向信息
|
- (AVMutableVideoComposition *)fixedCompositionWithAsset:(AVAsset *)videoAsset {
|
AVMutableVideoComposition *videoComposition = [AVMutableVideoComposition videoComposition];
|
// 视频转向
|
int degrees = [self degressFromVideoFileWithAsset:videoAsset];
|
if (degrees != 0) {
|
CGAffineTransform translateToCenter;
|
CGAffineTransform mixedTransform;
|
videoComposition.frameDuration = CMTimeMake(1, 30);
|
|
NSArray *tracks = [videoAsset tracksWithMediaType:AVMediaTypeVideo];
|
AVAssetTrack *videoTrack = [tracks objectAtIndex:0];
|
|
AVMutableVideoCompositionInstruction *roateInstruction = [AVMutableVideoCompositionInstruction videoCompositionInstruction];
|
roateInstruction.timeRange = CMTimeRangeMake(kCMTimeZero, [videoAsset duration]);
|
AVMutableVideoCompositionLayerInstruction *roateLayerInstruction = [AVMutableVideoCompositionLayerInstruction videoCompositionLayerInstructionWithAssetTrack:videoTrack];
|
|
if (degrees == 90) {
|
// 顺时针旋转90°
|
translateToCenter = CGAffineTransformMakeTranslation(videoTrack.naturalSize.height, 0.0);
|
mixedTransform = CGAffineTransformRotate(translateToCenter,M_PI_2);
|
videoComposition.renderSize = CGSizeMake(videoTrack.naturalSize.height,videoTrack.naturalSize.width);
|
[roateLayerInstruction setTransform:mixedTransform atTime:kCMTimeZero];
|
} else if(degrees == 180){
|
// 顺时针旋转180°
|
translateToCenter = CGAffineTransformMakeTranslation(videoTrack.naturalSize.width, videoTrack.naturalSize.height);
|
mixedTransform = CGAffineTransformRotate(translateToCenter,M_PI);
|
videoComposition.renderSize = CGSizeMake(videoTrack.naturalSize.width,videoTrack.naturalSize.height);
|
[roateLayerInstruction setTransform:mixedTransform atTime:kCMTimeZero];
|
} else if(degrees == 270){
|
// 顺时针旋转270°
|
translateToCenter = CGAffineTransformMakeTranslation(0.0, videoTrack.naturalSize.width);
|
mixedTransform = CGAffineTransformRotate(translateToCenter,M_PI_2*3.0);
|
videoComposition.renderSize = CGSizeMake(videoTrack.naturalSize.height,videoTrack.naturalSize.width);
|
[roateLayerInstruction setTransform:mixedTransform atTime:kCMTimeZero];
|
}
|
|
roateInstruction.layerInstructions = @[roateLayerInstruction];
|
// 加入视频方向信息
|
videoComposition.instructions = @[roateInstruction];
|
}
|
return videoComposition;
|
}
|
|
/// 获取视频角度
|
- (int)degressFromVideoFileWithAsset:(AVAsset *)asset {
|
int degress = 0;
|
NSArray *tracks = [asset tracksWithMediaType:AVMediaTypeVideo];
|
if([tracks count] > 0) {
|
AVAssetTrack *videoTrack = [tracks objectAtIndex:0];
|
CGAffineTransform t = videoTrack.preferredTransform;
|
if(t.a == 0 && t.b == 1.0 && t.c == -1.0 && t.d == 0){
|
// Portrait
|
degress = 90;
|
} else if(t.a == 0 && t.b == -1.0 && t.c == 1.0 && t.d == 0){
|
// PortraitUpsideDown
|
degress = 270;
|
} else if(t.a == 1.0 && t.b == 0 && t.c == 0 && t.d == 1.0){
|
// LandscapeRight
|
degress = 0;
|
} else if(t.a == -1.0 && t.b == 0 && t.c == 0 && t.d == -1.0){
|
// LandscapeLeft
|
degress = 180;
|
}
|
}
|
return degress;
|
}
|
|
/// 修正图片转向
|
- (UIImage *)fixOrientation:(UIImage *)aImage {
|
if (!self.shouldFixOrientation) return aImage;
|
|
// No-op if the orientation is already correct
|
if (aImage.imageOrientation == UIImageOrientationUp)
|
return aImage;
|
|
// We need to calculate the proper transformation to make the image upright.
|
// We do it in 2 steps: Rotate if Left/Right/Down, and then flip if Mirrored.
|
CGAffineTransform transform = CGAffineTransformIdentity;
|
|
switch (aImage.imageOrientation) {
|
case UIImageOrientationDown:
|
case UIImageOrientationDownMirrored:
|
transform = CGAffineTransformTranslate(transform, aImage.size.width, aImage.size.height);
|
transform = CGAffineTransformRotate(transform, M_PI);
|
break;
|
|
case UIImageOrientationLeft:
|
case UIImageOrientationLeftMirrored:
|
transform = CGAffineTransformTranslate(transform, aImage.size.width, 0);
|
transform = CGAffineTransformRotate(transform, M_PI_2);
|
break;
|
|
case UIImageOrientationRight:
|
case UIImageOrientationRightMirrored:
|
transform = CGAffineTransformTranslate(transform, 0, aImage.size.height);
|
transform = CGAffineTransformRotate(transform, -M_PI_2);
|
break;
|
default:
|
break;
|
}
|
|
switch (aImage.imageOrientation) {
|
case UIImageOrientationUpMirrored:
|
case UIImageOrientationDownMirrored:
|
transform = CGAffineTransformTranslate(transform, aImage.size.width, 0);
|
transform = CGAffineTransformScale(transform, -1, 1);
|
break;
|
|
case UIImageOrientationLeftMirrored:
|
case UIImageOrientationRightMirrored:
|
transform = CGAffineTransformTranslate(transform, aImage.size.height, 0);
|
transform = CGAffineTransformScale(transform, -1, 1);
|
break;
|
default:
|
break;
|
}
|
|
// Now we draw the underlying CGImage into a new context, applying the transform
|
// calculated above.
|
CGContextRef ctx = CGBitmapContextCreate(NULL, aImage.size.width, aImage.size.height,
|
CGImageGetBitsPerComponent(aImage.CGImage), 0,
|
CGImageGetColorSpace(aImage.CGImage),
|
CGImageGetBitmapInfo(aImage.CGImage));
|
CGContextConcatCTM(ctx, transform);
|
switch (aImage.imageOrientation) {
|
case UIImageOrientationLeft:
|
case UIImageOrientationLeftMirrored:
|
case UIImageOrientationRight:
|
case UIImageOrientationRightMirrored:
|
// Grr...
|
CGContextDrawImage(ctx, CGRectMake(0,0,aImage.size.height,aImage.size.width), aImage.CGImage);
|
break;
|
|
default:
|
CGContextDrawImage(ctx, CGRectMake(0,0,aImage.size.width,aImage.size.height), aImage.CGImage);
|
break;
|
}
|
|
// And now we just create a new UIImage from the drawing context
|
CGImageRef cgimg = CGBitmapContextCreateImage(ctx);
|
UIImage *img = [UIImage imageWithCGImage:cgimg];
|
CGContextRelease(ctx);
|
CGImageRelease(cgimg);
|
return img;
|
}
|
|
#pragma clang diagnostic pop
|
|
@end
|
|
|
//@implementation TZSortDescriptor
|
//
|
//- (id)reversedSortDescriptor {
|
// return [NSNumber numberWithBool:![TZImageManager manager].sortAscendingByModificationDate];
|
//}
|
//
|
//@end
|
