/*  Copyright:  © Copyright 2005 Apple Computer, Inc. All rights reserved.

    Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple Computer, Inc.

            ("Apple") in consideration of your agreement to the following terms, and your

            use, installation, modification or redistribution of this Apple software

            constitutes acceptance of these terms.  If you do not agree with these terms,

            please do not use, install, modify or redistribute this Apple software.

            In consideration of your agreement to abide by the following terms, and subject

            to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs

            copyrights in this original Apple software (the "Apple Software"), to use,

            reproduce, modify and redistribute the Apple Software, with or without

            modifications, in source and/or binary forms; provided that if you redistribute

            the Apple Software in its entirety and without modifications, you must retain

            this notice and the following text and disclaimers in all such redistributions of

            the Apple Software.  Neither the name, trademarks, service marks or logos of

            Apple Computer, Inc. may be used to endorse or promote products derived from the

            Apple Software without specific prior written permission from Apple.  Except as

            expressly stated in this notice, no other rights or licenses, express or implied,

            are granted by Apple herein, including but not limited to any patent rights that

            may be infringed by your derivative works or by other works in which the Apple

            Software may be incorporated.

            The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

            WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

            WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR

            PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN

            COMBINATION WITH YOUR PRODUCTS.

            IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

            CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE

            GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

            ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION

            OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT

            (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN

            ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#import <Cocoa/Cocoa.h>

#import "SGChan.h"

@class SampleCIView;

extern NSString * SGVideoPreviewViewBoundsChangedNotification;

// this is a Cocoa wrapper for the VideoMediaType SGChannel.  It uses a SampleCIView

// (NSOpenGLView subclass) to preview images, after gathering them in the SGDataProc

// and pushing them through an ICMDecompressionSession.

@interface SGVideo : SGChan {

    GWorldPtr                   mOffscreen;

    ICMDecompressionSessionRef  mDecompS;

    TimeScale                   mTimeScale;

    TimeValue                   mLastTime;

    UInt32                      mFrameCount;

    long                        mFrameNumber;

// we intercept usage instead of passing it directly to the SGVideoChannel, 

// because we're overriding channel usage semantics by using the data proc

    long                        mUsage;

    NSRect                      mPreviewBounds;

    CodecQ                      mPreviewQuality;

    SampleCIView *              mPreviewView;

    float                       mDesiredPreviewFrameRate;

    TimeValue                   mMinPreviewFrameDuration;

}

- (id)initWithSeqGrab:(SeqGrab*)sg;

- (NSRect)srcVideoBounds;

- (NSRect)outputBounds;

- (void)setOutputBounds:(NSRect)bounds;

- (NSView*)previewView;

- (NSRect)previewBounds;

/*

    codecLowQuality               = 0x00000100,

    codecNormalQuality            = 0x00000200,

    codecHighQuality              = 0x00000300

*/

- (void)setPreviewQuality:(CodecQ)quality;

- (CodecQ)previewQuality;

- (void)setDesiredPreviewFrameRate:(float)fps;

- (float)desiredPreviewFrameRate;

- (OSType)channelType;

- (BOOL)isVideoChannel;

- (BOOL)isAudioChannel;

- (NSString*)summaryString;

-(OSErr)decompressData:(void*)data length:(long)length time:(TimeValue)timeValue;

- (void)displayData:(CVPixelBufferRef)pixelBuffer

            trackingFlags:(ICMDecompressionTrackingFlags)decompressionTrackingFlags

            displayTime:(TimeValue64)displayTime

            displayDuration:(TimeValue64)displayDuration

            validTimeFlags:(ICMValidTimeFlags)validTimeFlags;

@end