Ein Anderssono
b2d4c6188d
semaphore_wait_with_timeout now polls photos_cancelled every second instead of blocking for the full timeout duration
409 lines
16 KiB
Objective-C
409 lines
16 KiB
Objective-C
#import <Foundation/Foundation.h>
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#import <AppKit/AppKit.h>
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#import <Photos/Photos.h>
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#import "photokit_bridge.h"
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static volatile int photos_cancelled = 0;
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static NSDictionary *make_error_dict(NSString *message) {
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return @{@"error": message};
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}
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static BOOL semaphore_wait_with_timeout(dispatch_semaphore_t sem, int64_t seconds) {
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int64_t deadline = (int64_t)[NSDate timeIntervalSinceReferenceDate] + seconds;
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while (1) {
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if (photos_cancelled) return NO;
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int64_t remaining = deadline - (int64_t)[NSDate timeIntervalSinceReferenceDate];
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if (remaining <= 0) return NO;
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int64_t waitSecs = remaining < 1 ? remaining : 1;
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dispatch_time_t timeout = dispatch_time(DISPATCH_TIME_NOW, waitSecs * NSEC_PER_SEC);
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if (dispatch_semaphore_wait(sem, timeout) == 0) return YES;
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}
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}
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static NSDictionary *collection_to_dict(PHCollection *collection) {
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NSString *name = collection.localizedTitle ?: @"Untitled";
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NSString *identifier = collection.localIdentifier ?: @"";
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if ([collection isKindOfClass:[PHCollectionList class]]) {
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PHCollectionList *list = (PHCollectionList *)collection;
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PHFetchResult<PHCollection *> *children = [PHCollectionList fetchCollectionsInCollectionList:list
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options:nil];
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NSMutableArray *childList = [NSMutableArray arrayWithCapacity:children.count];
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for (NSUInteger i = 0; i < children.count; i++) {
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NSDictionary *child = collection_to_dict(children[i]);
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if (child) {
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[childList addObject:child];
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}
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}
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return @{
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@"id": identifier,
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@"name": name,
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@"kind": @"folder",
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@"children": childList,
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};
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}
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if ([collection isKindOfClass:[PHAssetCollection class]]) {
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return @{
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@"id": identifier,
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@"name": name,
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@"kind": @"album",
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@"children": @[],
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};
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}
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return nil;
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}
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static char *json_from_object(id obj) {
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if (!obj) return NULL;
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NSData *data = [NSJSONSerialization dataWithJSONObject:obj options:0 error:nil];
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if (!data) return NULL;
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const char *utf8 = [data bytes];
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size_t len = [data length];
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char *copy = (char *)malloc(len + 1);
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if (!copy) return NULL;
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memcpy(copy, utf8, len);
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copy[len] = '\0';
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return copy;
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}
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static NSData *nsimage_to_jpeg(NSImage *image, CGFloat compression) {
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NSData *result = nil;
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NSBitmapImageRep *rep = nil;
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for (NSImageRep *r in image.representations) {
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if ([r isKindOfClass:[NSBitmapImageRep class]]) {
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rep = (NSBitmapImageRep *)r;
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break;
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}
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}
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if (!rep) {
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rep = [[NSBitmapImageRep alloc] initWithData:[image TIFFRepresentation]];
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}
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if (rep) {
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NSDictionary *props = @{NSImageCompressionMethod: @(NSTIFFCompressionJPEG),
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NSImageCompressionFactor: @(compression)};
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result = [rep representationUsingType:NSBitmapImageFileTypeJPEG properties:props];
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}
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return result;
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}
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static BOOL ensure_directory(NSString *outputDir) {
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NSFileManager *fm = [NSFileManager defaultManager];
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NSError *dirErr = nil;
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BOOL ok = [fm createDirectoryAtPath:outputDir withIntermediateDirectories:YES
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attributes:nil error:&dirErr];
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if (!ok && dirErr) {
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NSLog(@"ensure_directory failed: %@", dirErr);
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}
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return ok;
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}
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static PHFetchResult<PHAsset *> *fetch_assets_for_collection(PHAssetCollection *album) {
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PHFetchOptions *opts = [[PHFetchOptions alloc] init];
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opts.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate"
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ascending:YES]];
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return [PHAsset fetchAssetsInAssetCollection:album options:opts];
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}
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static NSString *sanitized_asset_identifier(NSString *assetID) {
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NSMutableString *safe = [assetID mutableCopy];
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NSRange fullRange = NSMakeRange(0, safe.length);
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[safe replaceOccurrencesOfString:@"/"
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withString:@"_"
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options:0
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range:fullRange];
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[safe replaceOccurrencesOfString:@"\\"
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withString:@"_"
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options:0
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range:NSMakeRange(0, safe.length)];
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return safe;
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}
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static NSString *unique_path_for_filename(NSString *outputDir, NSString *filename, NSUInteger index) {
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NSFileManager *fm = [NSFileManager defaultManager];
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NSString *candidate = [outputDir stringByAppendingPathComponent:filename];
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if (![fm fileExistsAtPath:candidate]) {
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return candidate;
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}
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NSString *base = [filename stringByDeletingPathExtension];
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NSString *ext = [filename pathExtension];
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NSString *prefixed = ext.length > 0
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? [NSString stringWithFormat:@"%04lu_%@.%@", (unsigned long)index, base, ext]
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: [NSString stringWithFormat:@"%04lu_%@", (unsigned long)index, base];
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return [outputDir stringByAppendingPathComponent:prefixed];
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}
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// Must stay in sync with sanitizePathComponent in cmd/photoscli/main.go
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static NSString *sanitized_path_component(NSString *name) {
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NSString *source = name ?: @"Untitled";
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NSMutableString *safe = [[source stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] mutableCopy];
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if (safe.length == 0) {
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return @"Untitled";
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}
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NSRange fullRange = NSMakeRange(0, safe.length);
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[safe replaceOccurrencesOfString:@"/"
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withString:@"_"
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options:0
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range:fullRange];
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[safe replaceOccurrencesOfString:@"\\"
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withString:@"_"
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options:0
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range:NSMakeRange(0, safe.length)];
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return safe;
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}
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int photos_request_access(void) {
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__block PHAuthorizationStatus status = [PHPhotoLibrary authorizationStatus];
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if (status == PHAuthorizationStatusNotDetermined) {
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dispatch_semaphore_t sem = dispatch_semaphore_create(0);
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[PHPhotoLibrary requestAuthorization:^(PHAuthorizationStatus s) {
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status = s;
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dispatch_semaphore_signal(sem);
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}];
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if (!semaphore_wait_with_timeout(sem, 30)) {
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return -1;
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}
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}
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return (status == PHAuthorizationStatusAuthorized) ? 0 : -1;
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}
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char *photos_list_albums_json(void) {
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PHFetchResult<PHAssetCollection *> *albums =
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[PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum
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subtype:PHAssetCollectionSubtypeAny
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options:nil];
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NSMutableArray *list = [NSMutableArray arrayWithCapacity:albums.count];
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for (NSUInteger i = 0; i < albums.count; i++) {
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PHAssetCollection *album = albums[i];
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NSString *title = album.localizedTitle;
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NSString *lid = album.localIdentifier;
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[list addObject:@{
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@"id": lid ?: @"",
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@"title": title ?: @""
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}];
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}
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return json_from_object(@{@"albums": list});
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}
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static NSString *asset_cloud_status_string(PHAsset *asset) {
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@try {
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id cloudId = [asset performSelector:@selector(cloudIdentifier)];
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if (cloudId && ![cloudId isEqual:[NSNull null]]) {
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return @"cloud";
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}
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} @catch (NSException *exception) {
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}
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PHAssetResource *resource = [PHAssetResource assetResourcesForAsset:asset].firstObject;
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if (resource) {
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@try {
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id locallyAvailable = [resource performSelector:@selector(isLocallyAvailable)];
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if (locallyAvailable && [locallyAvailable boolValue]) {
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return @"local";
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}
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return @"cloud";
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} @catch (NSException *exception) {
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}
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}
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return @"local";
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}
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char *photos_list_assets_json(const char *album_id) {
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if (!album_id) return json_from_object(make_error_dict(@"album_id is required"));
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NSString *nsAlbumId = [NSString stringWithUTF8String:album_id];
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if (!nsAlbumId) return json_from_object(make_error_dict(@"invalid UTF-8 in album_id"));
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PHFetchResult<PHAssetCollection *> *albums =
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[PHAssetCollection fetchAssetCollectionsWithLocalIdentifiers:@[nsAlbumId]
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options:nil];
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if (albums.count == 0) return json_from_object(make_error_dict(@"album not found"));
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PHAssetCollection *album = albums.firstObject;
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PHFetchOptions *opts = [[PHFetchOptions alloc] init];
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opts.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate"
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ascending:YES]];
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PHFetchResult<PHAsset *> *assets =
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[PHAsset fetchAssetsInAssetCollection:album options:opts];
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NSMutableArray *list = [NSMutableArray arrayWithCapacity:assets.count];
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for (NSUInteger i = 0; i < assets.count; i++) {
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PHAsset *asset = assets[i];
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NSString *lid = asset.localIdentifier;
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NSString *filename = nil;
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NSArray<PHAssetResource *> *resources = [PHAssetResource assetResourcesForAsset:asset];
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if (resources.count > 0) {
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filename = resources.firstObject.originalFilename;
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}
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NSString *cloudStatus = asset_cloud_status_string(asset);
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[list addObject:@{
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@"id": lid ?: @"",
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@"filename": filename ?: @"",
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@"cloud": cloudStatus
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}];
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}
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return json_from_object(@{@"assets": list, @"total": @(assets.count)});
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}
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char *photos_list_tree_json(void) {
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PHFetchResult<PHCollection *> *collections = [PHCollectionList fetchTopLevelUserCollectionsWithOptions:nil];
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NSMutableArray *list = [NSMutableArray arrayWithCapacity:collections.count];
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for (NSUInteger i = 0; i < collections.count; i++) {
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NSDictionary *node = collection_to_dict(collections[i]);
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if (node) {
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[list addObject:node];
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}
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}
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return json_from_object(@{@"collections": list});
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}
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char *photos_export_preview_json(const char *asset_id, const char *output_dir, int target_size, int index) {
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if (!asset_id || !output_dir) return json_from_object(make_error_dict(@"asset_id and output_dir required"));
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if (target_size <= 0) target_size = 1024;
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NSString *nsAssetId = [NSString stringWithUTF8String:asset_id];
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NSString *nsOutputDir = [NSString stringWithUTF8String:output_dir];
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if (!nsAssetId || !nsOutputDir) return json_from_object(make_error_dict(@"invalid UTF-8 in arguments"));
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PHFetchResult<PHAsset *> *fetch = [PHAsset fetchAssetsWithLocalIdentifiers:@[nsAssetId] options:nil];
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if (fetch.count == 0) return json_from_object(make_error_dict(@"asset not found"));
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PHAsset *asset = fetch.firstObject;
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PHImageManager *im = [PHImageManager defaultManager];
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CGFloat scale = (CGFloat)target_size;
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CGSize targetCGSize = CGSizeMake(scale, scale);
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PHImageRequestOptions *imgOpts = [[PHImageRequestOptions alloc] init];
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imgOpts.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
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imgOpts.resizeMode = PHImageRequestOptionsResizeModeExact;
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imgOpts.networkAccessAllowed = YES;
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imgOpts.synchronous = YES;
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dispatch_semaphore_t sem = dispatch_semaphore_create(0);
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__block NSData *imageData = nil;
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__block NSDictionary *errorInfo = nil;
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[im requestImageForAsset:asset
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targetSize:targetCGSize
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contentMode:PHImageContentModeAspectFit
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options:imgOpts
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resultHandler:^(NSImage *result, NSDictionary *info) {
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if (info[PHImageErrorKey]) {
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errorInfo = info;
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dispatch_semaphore_signal(sem);
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return;
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}
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if (result) {
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imageData = nsimage_to_jpeg(result, 0.85);
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}
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dispatch_semaphore_signal(sem);
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}];
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if (!semaphore_wait_with_timeout(sem, 120)) {
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return json_from_object(@{@"error": @"timeout waiting for image", @"cloud": asset_cloud_status_string(asset)});
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}
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if (!imageData) {
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return json_from_object(@{@"error": @"failed to render image", @"cloud": asset_cloud_status_string(asset)});
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}
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NSString *safe = sanitized_asset_identifier(asset.localIdentifier);
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NSString *filename = [NSString stringWithFormat:@"%04lu_%@.jpg", (unsigned long)index, safe];
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NSString *filepath = [nsOutputDir stringByAppendingPathComponent:filename];
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NSError *writeErr = nil;
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if (![imageData writeToFile:filepath options:NSDataWritingAtomic error:&writeErr]) {
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return json_from_object(@{@"error": @"write failed", @"cloud": asset_cloud_status_string(asset)});
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}
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NSNumber *fileSize = nil;
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NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:filepath error:nil];
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if (attrs) {
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fileSize = attrs[NSFileSize];
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}
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return json_from_object(@{
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@"filename": filename,
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@"size": fileSize ?: @0,
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@"cloud": asset_cloud_status_string(asset)
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});
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}
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char *photos_export_original_json(const char *asset_id, const char *output_dir, int index) {
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if (!asset_id || !output_dir) return json_from_object(make_error_dict(@"asset_id and output_dir required"));
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NSString *nsAssetId = [NSString stringWithUTF8String:asset_id];
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NSString *nsOutputDir = [NSString stringWithUTF8String:output_dir];
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if (!nsAssetId || !nsOutputDir) return json_from_object(make_error_dict(@"invalid UTF-8 in arguments"));
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PHFetchResult<PHAsset *> *fetch = [PHAsset fetchAssetsWithLocalIdentifiers:@[nsAssetId] options:nil];
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if (fetch.count == 0) return json_from_object(make_error_dict(@"asset not found"));
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PHAsset *asset = fetch.firstObject;
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NSArray<PHAssetResource *> *resources = [PHAssetResource assetResourcesForAsset:asset];
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if (resources.count == 0) {
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return json_from_object(@{@"error": @"no resources", @"cloud": asset_cloud_status_string(asset)});
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}
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PHAssetResource *resource = resources.firstObject;
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NSString *filename = resource.originalFilename;
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if (!filename || filename.length == 0) {
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filename = sanitized_asset_identifier(asset.localIdentifier);
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}
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NSString *filepath = unique_path_for_filename(nsOutputDir, filename, (NSUInteger)index);
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NSURL *fileURL = [NSURL fileURLWithPath:filepath];
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PHAssetResourceManager *rm = [PHAssetResourceManager defaultManager];
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PHAssetResourceRequestOptions *opts = [[PHAssetResourceRequestOptions alloc] init];
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opts.networkAccessAllowed = YES;
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dispatch_semaphore_t sem = dispatch_semaphore_create(0);
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__block NSError *writeErr = nil;
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[rm writeDataForAssetResource:resource
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toFile:fileURL
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options:opts
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completionHandler:^(NSError * _Nullable error) {
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writeErr = error;
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dispatch_semaphore_signal(sem);
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}];
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if (!semaphore_wait_with_timeout(sem, 120)) {
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return json_from_object(@{@"error": @"timeout waiting for resource", @"cloud": asset_cloud_status_string(asset)});
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}
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if (writeErr) {
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return json_from_object(@{@"error": @"write failed", @"cloud": asset_cloud_status_string(asset)});
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}
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NSString *writtenFilename = [filepath lastPathComponent];
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NSNumber *fileSize = nil;
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NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:filepath error:nil];
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if (attrs) {
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fileSize = attrs[NSFileSize];
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}
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return json_from_object(@{
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@"filename": writtenFilename,
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@"size": fileSize ?: @0,
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@"cloud": asset_cloud_status_string(asset)
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});
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}
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void photos_free_string(char *value) {
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if (value) free(value);
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}
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void photos_request_cancel(void) {
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photos_cancelled = 1;
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}
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