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Tweak.x
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#include <AVFoundation/AVFoundation.h>
// keep track of the rate
float rate = 1.00;
@interface ISAVPlayer : AVPlayer
@end
@interface ISWrappedAVPlayer
- (void)setRate:(float)arg1;
@end
@interface PXVideoSession
@property(nonatomic, readwrite, strong) AVPlayerItem *playerItem;
@end
@interface PUVideoTileViewController
@property(nonatomic, readwrite, strong) PXVideoSession *videoSession;
@end
@interface PUOneUpViewController : UIViewController
- (id)_currentContentTileController;
@end
PUOneUpViewController *OneUpVC = nil;
@interface PUExtendedToolbar : UIToolbar
@property(nonatomic, strong) UIBarButtonItem *item;
- (void)_setToolbarItems:(NSArray *)arg1;
- (void)rateChanged;
- (void)save:(AVURLAsset *)asset;
@end
@interface PUOneUpBarsController
@property(nonatomic)
BOOL isShowingPlayPauseButton; // ivar: _isShowingPlayPauseButton``
@property(nonatomic, strong) UIBarButtonItem *item;
- (id)viewController;
- (void)rateChanged;
- (void)save:(id)arg1;
@end
%group iPad
%hook PUOneUpBarsController
%property(nonatomic, strong) UIBarButtonItem *item;
- (void)updateBars {
%orig;
if (self.isShowingPlayPauseButton) {
PUOneUpViewController *controller = [self viewController];
NSMutableArray *actions = [[NSMutableArray alloc] init];
[actions
addObject:[UIAction
actionWithTitle:@"2x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 2.00;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1.75x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.75;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1.5x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.50;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1.25x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.25;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.00;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"0.75x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 0.75;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"0.5x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 0.50;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"0.25x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 0.25;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:
[UIAction
actionWithTitle:@"Save"
image:[UIImage systemImageNamed:
@"square.and.arrow.down.fill"]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
if (rate != 1.0) {
PUVideoTileViewController *controller =
[OneUpVC _currentContentTileController];
[self save:(AVURLAsset *)controller.videoSession
.playerItem.asset];
} else {
UIAlertController *_alertController =
[UIAlertController
alertControllerWithTitle:@"Warning"
message:
@"Are you sure you "
@"want to save the "
@"video with 1x rate?"
preferredStyle:
UIAlertControllerStyleAlert];
UIAlertAction *dismiss = [UIAlertAction
actionWithTitle:@"No"
style:UIAlertActionStyleDefault
handler:^(
UIAlertAction *_Nonnull action){
}];
UIAlertAction *accept = [UIAlertAction
actionWithTitle:@"Yes"
style:UIAlertActionStyleDefault
handler:^(
UIAlertAction *_Nonnull action) {
PUVideoTileViewController
*controller = [OneUpVC
_currentContentTileController];
[self save:(AVURLAsset *)
controller.videoSession
.playerItem.asset];
}];
[_alertController addAction:dismiss];
[_alertController addAction:accept];
[OneUpVC presentViewController:_alertController
animated:YES
completion:nil];
}
}]];
UIMenu *menu =
[UIMenu menuWithTitle:[NSString stringWithFormat:@"Playback Speed"]
children:actions];
self.item = [[UIBarButtonItem alloc]
initWithTitle:[NSString stringWithFormat:@"%.2f", rate]
menu:menu];
controller.navigationItem.rightBarButtonItems =
[controller.navigationItem.rightBarButtonItems
arrayByAddingObjectsFromArray:@[ self.item ]];
}
}
%new
- (void)rateChanged {
self.item.title = [NSString stringWithFormat:@"%.2f", rate];
}
%new
- (void)save:(AVURLAsset *)asset {
AVAssetTrack *track =
[[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
AVMutableComposition *mixComposition = [AVMutableComposition composition];
AVMutableCompositionTrack *compositionVideoTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
AVMutableCompositionTrack *compositionAudioTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeAudio
preferredTrackID:kCMPersistentTrackID_Invalid];
NSError *videoInsertError = nil;
BOOL videoInsertResult = [compositionVideoTrack
insertTimeRange:CMTimeRangeMake(kCMTimeZero, asset.duration)
ofTrack:[[asset tracksWithMediaType:AVMediaTypeVideo]
objectAtIndex:0]
atTime:kCMTimeZero
error:&videoInsertError];
if (!videoInsertResult || nil != videoInsertError) {
return;
}
NSError *audioInsertError = nil;
BOOL audioInsertResult = [compositionAudioTrack
insertTimeRange:CMTimeRangeMake(kCMTimeZero, asset.duration)
ofTrack:[[asset tracksWithMediaType:AVMediaTypeAudio]
objectAtIndex:0]
atTime:kCMTimeZero
error:&audioInsertError];
if (!audioInsertResult || nil != audioInsertError) {
return;
}
CMTime videoDuration = asset.duration;
double factor = ((double)videoDuration.value / rate);
[compositionVideoTrack
scaleTimeRange:CMTimeRangeMake(kCMTimeZero, videoDuration)
toDuration:CMTimeMake(factor, videoDuration.timescale)];
[compositionAudioTrack
scaleTimeRange:CMTimeRangeMake(kCMTimeZero, videoDuration)
toDuration:CMTimeMake(factor, videoDuration.timescale)];
[compositionVideoTrack setPreferredTransform:track.preferredTransform];
AVAssetExportSession *assetExport = [[AVAssetExportSession alloc]
initWithAsset:mixComposition
presetName:AVAssetExportPresetHighestQuality];
assetExport.outputFileType = AVFileTypeQuickTimeMovie;
assetExport.audioTimePitchAlgorithm = AVAudioTimePitchAlgorithmVarispeed;
NSURL *tmpDirURL = [NSURL fileURLWithPath:NSTemporaryDirectory()
isDirectory:YES];
NSURL *fileURL =
[[tmpDirURL URLByAppendingPathComponent:[[NSUUID UUID] UUIDString]]
URLByAppendingPathExtension:@"mov"];
assetExport.outputURL = fileURL;
[assetExport exportAsynchronouslyWithCompletionHandler:^{
UISaveVideoAtPathToSavedPhotosAlbum(
fileURL.path, self,
@selector(video:didFinishSavingWithError:contextInfo:), nil);
}];
}
%new
- (void)video:(NSString *)videoPath
didFinishSavingWithError:(NSError *)error
contextInfo:(void *)contextInfo {
if (!error) {
[[NSFileManager defaultManager] removeItemAtPath:videoPath error:nil];
}
}
%end
%end
%group iPhone
%hook PUExtendedToolbar
// property to manage item name within the class
%property(nonatomic, strong) UIBarButtonItem *item;
- (void)_setToolbarItems:(NSArray *)arg1 {
// check if there is a pause button, if so then we have determined that
// current asset is a video
if ([arg1.description containsString:@"systemItem=Pause"]) {
NSMutableArray *actions = [[NSMutableArray alloc] init];
[actions
addObject:
[UIAction
actionWithTitle:@"Save"
image:[UIImage systemImageNamed:
@"square.and.arrow.down.fill"]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
if (rate != 1.0) {
PUVideoTileViewController *controller =
[OneUpVC _currentContentTileController];
[self save:(AVURLAsset *)controller.videoSession
.playerItem.asset];
} else {
UIAlertController *_alertController =
[UIAlertController
alertControllerWithTitle:@"Warning"
message:
@"Are you sure you "
@"want to save the "
@"video with 1x rate?"
preferredStyle:
UIAlertControllerStyleAlert];
UIAlertAction *dismiss = [UIAlertAction
actionWithTitle:@"No"
style:UIAlertActionStyleDefault
handler:^(
UIAlertAction *_Nonnull action){
}];
UIAlertAction *accept = [UIAlertAction
actionWithTitle:@"Yes"
style:UIAlertActionStyleDefault
handler:^(
UIAlertAction *_Nonnull action) {
PUVideoTileViewController
*controller = [OneUpVC
_currentContentTileController];
[self save:(AVURLAsset *)
controller.videoSession
.playerItem.asset];
}];
[_alertController addAction:dismiss];
[_alertController addAction:accept];
[OneUpVC presentViewController:_alertController
animated:YES
completion:nil];
}
}]];
[actions
addObject:[UIAction
actionWithTitle:@"0.25x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 0.25;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"0.5x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 0.50;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"0.75x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 0.75;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.00;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1.25x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.25;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1.5x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.50;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"1.75x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 1.75;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
[actions
addObject:[UIAction
actionWithTitle:@"2x"
image:[UIImage systemImageNamed:@""]
identifier:nil
handler:^(__kindof UIAction *_Nonnull action) {
rate = 2.00;
[self rateChanged];
[[NSNotificationCenter defaultCenter]
postNotificationName:
@"SlowMoChangeRateNotification"
object:self];
}]];
UIMenu *menu =
[UIMenu menuWithTitle:[NSString stringWithFormat:@"Playback Speed"]
children:actions];
self.item = [[UIBarButtonItem alloc]
initWithTitle:[NSString stringWithFormat:@"%.2f", rate]
menu:menu];
UIBarButtonItem *flexibleItem = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace
target:nil
action:nil];
%orig(
[arg1 arrayByAddingObjectsFromArray:@[ flexibleItem, self.item ]]);
} else { // not a video
%orig;
}
}
%new
- (void)rateChanged {
self.item.title = [NSString stringWithFormat:@"%.2f", rate];
}
%new
- (void)save:(AVURLAsset *)asset {
AVAssetTrack *track =
[[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
AVMutableComposition *mixComposition = [AVMutableComposition composition];
AVMutableCompositionTrack *compositionVideoTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeVideo
preferredTrackID:kCMPersistentTrackID_Invalid];
AVMutableCompositionTrack *compositionAudioTrack = [mixComposition
addMutableTrackWithMediaType:AVMediaTypeAudio
preferredTrackID:kCMPersistentTrackID_Invalid];
NSError *videoInsertError = nil;
BOOL videoInsertResult = [compositionVideoTrack
insertTimeRange:CMTimeRangeMake(kCMTimeZero, asset.duration)
ofTrack:[[asset tracksWithMediaType:AVMediaTypeVideo]
objectAtIndex:0]
atTime:kCMTimeZero
error:&videoInsertError];
if (!videoInsertResult || nil != videoInsertError) {
return;
}
NSError *audioInsertError = nil;
BOOL audioInsertResult = [compositionAudioTrack
insertTimeRange:CMTimeRangeMake(kCMTimeZero, asset.duration)
ofTrack:[[asset tracksWithMediaType:AVMediaTypeAudio]
objectAtIndex:0]
atTime:kCMTimeZero
error:&audioInsertError];
if (!audioInsertResult || nil != audioInsertError) {
return;
}
CMTime videoDuration = asset.duration;
double factor = ((double)videoDuration.value / rate);
[compositionVideoTrack
scaleTimeRange:CMTimeRangeMake(kCMTimeZero, videoDuration)
toDuration:CMTimeMake(factor, videoDuration.timescale)];
[compositionAudioTrack
scaleTimeRange:CMTimeRangeMake(kCMTimeZero, videoDuration)
toDuration:CMTimeMake(factor, videoDuration.timescale)];
[compositionVideoTrack setPreferredTransform:track.preferredTransform];
AVAssetExportSession *assetExport = [[AVAssetExportSession alloc]
initWithAsset:mixComposition
presetName:AVAssetExportPresetHighestQuality];
assetExport.outputFileType = AVFileTypeQuickTimeMovie;
assetExport.audioTimePitchAlgorithm = AVAudioTimePitchAlgorithmVarispeed;
NSURL *tmpDirURL = [NSURL fileURLWithPath:NSTemporaryDirectory()
isDirectory:YES];
NSURL *fileURL =
[[tmpDirURL URLByAppendingPathComponent:[[NSUUID UUID] UUIDString]]
URLByAppendingPathExtension:@"mov"];
assetExport.outputURL = fileURL;
[assetExport exportAsynchronouslyWithCompletionHandler:^{
UISaveVideoAtPathToSavedPhotosAlbum(
fileURL.path, self,
@selector(video:didFinishSavingWithError:contextInfo:), nil);
}];
}
%new
- (void)video:(NSString *)videoPath
didFinishSavingWithError:(NSError *)error
contextInfo:(void *)contextInfo {
if (!error) {
[[NSFileManager defaultManager] removeItemAtPath:videoPath error:nil];
}
}
%end
%end
%hook ISAVPlayer
- (id)currentItem {
AVPlayerItem *item = %orig;
item.audioTimePitchAlgorithm =
AVAudioTimePitchAlgorithmVarispeed; // to allow flexibility for the rate
return item;
}
%end
%hook PUOneUpViewController
- (instancetype)initWithBrowsingSession:(id)arg1
options:(NSUInteger)arg2
initialActivity:(NSUInteger)arg3
presentationOrigin:(NSInteger)arg4 {
OneUpVC = %orig;
return OneUpVC;
}
- (void)viewDidDisappear:(BOOL)arg1 {
OneUpVC = nil;
%orig;
}
%end
%hook ISWrappedAVPlayer
- (void)setRate:(float)arg1 {
// other than pausing, control our own rate
return %orig((arg1 == 0.0) ? arg1 : rate);
}
- (void)setLoopingEnabled:(BOOL)arg1 {
// enable looping by default
%orig(true);
}
- (id)_initWithAVPlayer:(id)arg1 {
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(receiveRateNotification:)
name:@"SlowMoChangeRateNotification"
object:nil];
return %orig;
}
%new
- (void)receiveRateNotification:(NSNotification *)notification {
if ([[notification name] isEqualToString:@"SlowMoChangeRateNotification"])
[self setRate:rate];
}
%end
%ctor {
%init();
if (UIDevice.currentDevice.userInterfaceIdiom == UIUserInterfaceIdiomPhone) {
%init(iPhone);
} else if (UIDevice.currentDevice.userInterfaceIdiom ==
UIUserInterfaceIdiomPad) {
%init(iPad);
}
}