/*

File: LiveVideoMixerController.h

Abstract:   This is the application controller object.

        It also functions as the document as it holds

        the video channels.

Version: 1.0

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*/ 

#import "VideoChannel.h"

#import <Cocoa/Cocoa.h>

#import <QuartzCore/CoreVideo.h>

#import "VideoOutSupport.h"

// constants for the mask textures that build the shapes

#define kNumTextures                4

#define kTextureTarget              GL_TEXTURE_RECTANGLE_EXT    

#define kSpeechBubbleTextureID          kNumTextures - 1

#define kSpeechBubble               1

// size of the area in which the user can click to resize the movie in positioning mode

#define kSelectionHandleSize            20.0f

//for simplicity in this example we assume a fixed movie size of 720x480

#define kVideoWidth             720.0f

#define kVideoHeight                480.0f

extern GLuint               gTexNames[kNumTextures];

typedef enum SelectionHandleID

{

    kNoSelectionHandle = 0,

    kTopLeftCorner,

    kTopRightCorner,

    kBottomLeftCorner,

    kBottomRightCorner

} SelectionHandleID;

@class VideoMixView;

@interface LiveVideoMixerController : NSObject

{

    IBOutlet id channelController0;

    IBOutlet id channelController1;

    IBOutlet id channelController2;

    IBOutlet VideoMixView *mainView;

    IBOutlet id playButton;

    IBOutlet id positionSwitch0;

    IBOutlet id positionSwitch1;

    IBOutlet id positionSwitch2;

    // master time base as an option to synch the movies

    TimeBase                masterTimeBase;

    BOOL                useMasterTimeBase;

    // the CVDisplayLink

    BOOL                isPlaying;

    CVDisplayLinkRef            displayLink;

    CGDirectDisplayID           mainViewDisplayID;

    // which channel is currently in positioning mode - its -1 if no channel is in positioning mode

    SInt32              currentChannelPositioned;   

    // Timer for the MoviesTask call on the main thread

    NSTimer             *qtHousekeepingTimer;

    VideoOutSupport         *videoOutSupport;

}

- (IBAction)openChannelFile:(id)sender;

- (IBAction)setChannelPosition:(id)sender;

- (IBAction)togglePlayback:(id)sender;

- (BOOL)isPlaying;

- (NSRect)mainVideoRect;

- (void)drawContent:(NSRect)mainVideoRect mainVideoOnly:(BOOL)mainVideoOnly;

- (CVReturn)render:(const CVTimeStamp*)syncTimeStamp;

- (void)mouseDown:(NSEvent *)theEvent;

- (void)windowChangedScreen:(NSNotification*)inNotification;

@end

CVReturn myCVDisplayLinkOutputCallback(CVDisplayLinkRef displayLink, 

                                                const CVTimeStamp *inNow, 

                                                const CVTimeStamp *inOutputTime, 

                                                CVOptionFlags flagsIn, 

                                                CVOptionFlags *flagsOut, 

                                                void *displayLinkContext);