//

// FFmpegController.h

// iina

//

// Created by lhc on 9/6/2017.

// Copyright © 2017 lhc. All rights reserved.

//

#import <Foundation/Foundation.h>

@interface FFThumbnail: NSObject

@property(nonatomic) NSImage * _Nullable image;

@property(nonatomic) double realTime;

@end

@protocol FFmpegControllerDelegate <NSObject>

/**

A notification being sent

*/

- (void)didUpdateThumbnails:(nullable NSArray<FFThumbnail *> *)thumbnails forFile:(nonnull NSString *)filename withProgress:(NSInteger)progress;

/**

Did generated thumbnails for the video.

*/

- (void)didGenerateThumbnails:(nonnull NSArray<FFThumbnail *> *)thumbnails forFile:(nonnull NSString *)filename succeeded:(BOOL)succeeded;

@end

@interface FFmpegController: NSObject

@property(nonatomic, weak) id<FFmpegControllerDelegate> _Nullable delegate;

@property(nonatomic) NSInteger thumbnailCount;

/// Initializes and returns an image object with the contents of the specified URL

///

/// At this time, the normal [NSImage](https://developer.apple.com/documentation/appkit/nsimage/1519907-init)

/// initializer will fail to create an image object if the image file was encoded in [JPEG XL](https://jpeg.org/jpegxl/) format.

/// In older versions of macOS this will also occur if the image file was encoded in [WebP](https://en.wikipedia.org/wiki/WebP/)

/// format. As these are supported formats for screenshots it is desirable to have an alternative method for creating image objects that

/// supports these formats so that a screenshot preview can be displayed as is done for other screenshot formats. This method is

/// intended to be used when the normal AppKit supplied initializer is unable to create an image.

/// - Attention: This method only supports decoding JPEG XL and WebP encoded images. It is not intended to replace the normal

/// AppKit supplied initializer.

/// - Parameter url: The URL identifying the image.

/// - Returns: An initialized NSImage object or null if the method cannot create an image representation from the contents of the

/// specified URL.

+ (nullable NSImage *)createNSImageWithContentsOfURL:(nonnull NSURL *)url;

- (void)generateThumbnailForFile:(nonnull NSString *)file

thumbWidth:(int)thumbWidth;

/// Read artwork from the file with the given URL.

///

/// This method will open the file and search the streams for one that contains front cover artwork. If found the image data will be read

/// from the stream and an `NSImage` will be constructed and returned.

/// - Parameter url: URL of the file to read artwork from.

/// - Returns: An initialized NSImage object containing the artwork or null if no artwork was found.

+ (nullable NSImage *)readArtworkFromURL:(nonnull NSURL *)url;

+ (nullable NSDictionary *)probeVideoInfoForFile:(nonnull NSString *)file;

@end