/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    Main class used to demonstrate reading/writing of assets.

 */

@import AppKit;

@import CoreMedia;

@import AVFoundation;

@class AAPLSampleBufferChannel;

@class AAPLProgressPanelController;

@interface AAPLDocument : NSDocument

{

@private

    IBOutlet NSView             *frameView;

    IBOutlet NSPopUpButton      *filterPopUpButton;

    AVAsset                     *asset;

    AVAssetImageGenerator       *imageGenerator;

    CMTimeRange                 timeRange;

    NSInteger                   filterTag;

    dispatch_queue_t            serializationQueue;

    // Only accessed on the main thread

    NSURL                       *outputURL;

    BOOL                        writingSamples;

    AAPLProgressPanelController *progressPanelController;

    // All of these are createed, accessed, and torn down exclusively on the serializaton queue

    AVAssetReader               *assetReader;

    AVAssetWriter               *assetWriter;

    AAPLSampleBufferChannel     *audioSampleBufferChannel;

    AAPLSampleBufferChannel     *videoSampleBufferChannel;

    BOOL                        cancelled;  

}

@property (nonatomic, retain) AVAsset *asset;

@property (nonatomic) CMTimeRange timeRange;

@property (nonatomic, copy) NSURL *outputURL;

@property (nonatomic, retain) IBOutlet NSView *frameView;

@property (nonatomic, retain) IBOutlet NSPopUpButton *filterPopUpButton;

- (IBAction)start:(id)sender;

- (IBAction)cancel:(id)sender;

@property (nonatomic, getter=isWritingSamples) BOOL writingSamples;

@end