Video avatar fixes

submodules/LegacyComponents/Sources/TGMediaPickerGalleryPhotoItemView.m

@@ -23,8 +23,12 @@
 
 #import <LegacyComponents/TGMenuView.h>
 
+#import "TGPaintFaceDetector.h"
+
 @interface TGMediaPickerGalleryPhotoItemView ()
 {
+    SMetaDisposable *_facesDisposable;
+    
     UILabel *_fileInfoLabel;
     
     TGMessageImageViewOverlayView *_progressView;
@@ -57,6 +61,8 @@
     self = [super initWithFrame:frame];
     if (self != nil)
     {
+        _facesDisposable = [[SMetaDisposable alloc] init];
+        
         __weak TGMediaPickerGalleryPhotoItemView *weakSelf = self;
         _imageView = [[TGModernGalleryImageItemImageView alloc] init];
         _imageView.clipsToBounds = true;
@@ -101,6 +107,7 @@
 {
     [_adjustmentsDisposable dispose];
     [_attributesDisposable dispose];
+    [_facesDisposable dispose];
 }
 
 - (void)setHiddenAsBeingEdited:(bool)hidden
@@ -226,8 +233,11 @@
 
         }]];
         
-        if (!item.asFile)
+        if (!item.asFile) {
+            [_facesDisposable setDisposable:[[TGPaintFaceDetector detectFacesInItem:item.editableMediaItem editingContext:item.editingContext] startWithNext:nil]];
+            
             return;
+        }
         
         _fileInfoLabel.text = nil;
         

submodules/LegacyComponents/Sources/TGMediaPickerGalleryVideoItemView.m

@@ -41,6 +41,7 @@
 #import <LegacyComponents/TGMenuView.h>
 
 #import "PGPhotoEditor.h"
+#import "TGPaintFaceDetector.h"
 
 @interface TGMediaPickerGalleryVideoItemView() <TGMediaPickerGalleryVideoScrubberDataSource, TGMediaPickerGalleryVideoScrubberDelegate>
 {
@@ -96,6 +97,7 @@
     SMetaDisposable *_adjustmentsDisposable;
     SMetaDisposable *_attributesDisposable;
     SMetaDisposable *_downloadDisposable;
+    SMetaDisposable *_facesDisposable;
     SMetaDisposable *_currentAudioSession;
     
     SVariable *_editableItemVariable;
@@ -131,6 +133,7 @@
         
         _currentAudioSession = [[SMetaDisposable alloc] init];
         _playerItemDisposable = [[SMetaDisposable alloc] init];
+        _facesDisposable = [[SMetaDisposable alloc] init];
         
         _videoDurationVar = [[SVariable alloc] init];
         _videoDurationDisposable = [[SMetaDisposable alloc] init];
@@ -251,6 +254,7 @@
     [_thumbnailsDisposable dispose];
     [_attributesDisposable dispose];
     [_downloadDisposable dispose];
+    [_facesDisposable dispose];
     [self stopPlayer];
     
     [self releaseVolumeOverlay];
@@ -385,8 +389,13 @@
     
     [super setItem:item synchronously:synchronously];
     
-    if (itemChanged)
+    if (itemChanged) {
         [self _playerCleanup];
+     
+        if (!item.asFile) {
+            [_facesDisposable setDisposable:[[TGPaintFaceDetector detectFacesInItem:item.editableMediaItem editingContext:item.editingContext] startWithNext:nil]];
+        }
+    }
     
     _scrubberView.allowsTrimming = false;
     _videoDimensions = item.dimensions;

submodules/LegacyComponents/Sources/TGPaintFaceDetector.h

@@ -1,6 +1,9 @@
 #import <UIKit/UIKit.h>
 #import <SSignalKit/SSignalKit.h>
 
+@protocol TGMediaEditableItem;
+@class TGMediaEditingContext;
+
 @interface TGPaintFaceFeature : NSObject
 {
     CGPoint _position;
@@ -49,6 +52,8 @@
 
 + (SSignal *)detectFacesInImage:(UIImage *)image originalSize:(CGSize)originalSize;
 
++ (SSignal *)detectFacesInItem:(id<TGMediaEditableItem>)item editingContext:(TGMediaEditingContext *)editingContext;
+
 @end
 
 

submodules/LegacyComponents/Sources/TGPaintFaceDetector.m

@@ -3,6 +3,8 @@
 #import <LegacyComponents/TGPaintUtils.h>
 #import <ImageIO/ImageIO.h>
 
+#import "TGMediaEditingContext.m"
+
 @interface TGPaintFace ()
 
 + (instancetype)faceWithBounds:(CGRect)bounds angle:(CGFloat)angle leftEye:(TGPaintFaceEye *)leftEye rightEye:(TGPaintFaceEye *)rightEye mouth:(TGPaintFaceMouth *)mouth;
@@ -26,6 +28,41 @@
 
 @implementation TGPaintFaceDetector
 
++ (SSignal *)detectFacesInItem:(id<TGMediaEditableItem>)item editingContext:(TGMediaEditingContext *)editingContext
+{
+    CGSize originalSize = item.originalSize;
+        
+    SSignal *cachedFaces = [editingContext facesForItem:item];
+    SSignal *cachedSignal = [cachedFaces mapToSignal:^SSignal *(id result)
+    {
+        if (result == nil)
+            return [SSignal fail:nil];
+        return [SSignal single:result];
+    }];
+    
+    SSignal *imageSignal = [item screenImageSignal:0];
+    SSignal *detectSignal = [[[imageSignal filter:^bool(UIImage *image)
+                               {
+        if (![image isKindOfClass:[UIImage class]])
+            return false;
+        
+        if (image.degraded)
+            return false;
+        
+        return true;
+    }] take:1] mapToSignal:^SSignal *(UIImage *image) {
+        return [[TGPaintFaceDetector detectFacesInImage:image originalSize:originalSize] startOn:[SQueue concurrentDefaultQueue]];
+    }];
+    
+    return [[[cachedSignal catch:^SSignal *(__unused id error)
+       {
+        return detectSignal;
+    }] deliverOn:[SQueue mainQueue]] onNext:^(NSArray *next)
+     {
+        [editingContext setFaces:next forItem:item];
+    }];
+}
+
 + (SSignal *)detectFacesInImage:(UIImage *)image originalSize:(CGSize)originalSize
 {
     return [[SSignal alloc] initWithGenerator:^id<SDisposable>(SSubscriber *subscriber)

submodules/LegacyComponents/Sources/TGPhotoAvatarPreviewController.m

@@ -263,7 +263,9 @@ const CGFloat TGPhotoAvatarPreviewLandscapePanelSize = TGPhotoAvatarPreviewPanel
 - (void)prepareTransitionInWithReferenceView:(UIView *)referenceView referenceFrame:(CGRect)referenceFrame parentView:(UIView *)parentView noTransitionView:(bool)noTransitionView
 {
     [super prepareTransitionInWithReferenceView:referenceView referenceFrame:referenceFrame parentView:parentView noTransitionView:noTransitionView];
-    [self.view insertSubview:_transitionView belowSubview:_wrapperView];
+    
+    if (self.initialAppearance && self.fromCamera)
+        [self.view insertSubview:_transitionView belowSubview:_wrapperView];
 }
 
 - (void)transitionIn