/*

File: FrameLiveDVExporter.m

Abstract: Implements the FrameLiveDVExporter class.

Version: 1.0

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 Apple's 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.

Copyright © 2005 Apple Computer, Inc., All Rights Reserved

*/

#import "FrameLiveDVExporter.h"

@implementation FrameLiveDVExporter

+ (NSSize) sizeForFormat:(DVFormat)format

{

    switch(format) {

        case kDVFormat_NTSC: return NSMakeSize(720, 480);

        case kDVFormat_PAL: return NSMakeSize(720, 576);

    }

    return NSZeroSize;

}

+ (float) framerateForFormat:(DVFormat)format

{

    switch(format) {

        case kDVFormat_NTSC: return 29.97;

        case kDVFormat_PAL: return 25.00;

    }

    return 0.0;

}

- (id) initWithCodec:(CodecType)codec pixelsWide:(unsigned)width pixelsHigh:(unsigned)height options:(ICMCompressionSessionOptionsRef)options

{

    //Make sure client goes through designated initializer

    [self doesNotRecognizeSelector:_cmd];

    return nil;

}

- (id) initWithDVFormat:(DVFormat)format progressive:(BOOL)progressive wideScreen:(BOOL)wide

{

    ICMCompressionSessionOptionsRef options = [[self class] defaultOptions];

    CodecType                       codec = (format == kDVFormat_NTSC ? kDVCNTSCCodecType : kDVCPALCodecType);

    NSSize                          size = [[self class] sizeForFormat:format];

    Rect                            bounds = {0, 0, size.height, size.width};

    Boolean                         boolean = true;

    CodecQ                          quality = codecHighQuality;

    GWorldPtr                       displayGWorld;

    OSErr                           theError;

    Handle                          settings;

    ComponentInstance               component;

    //Check parameters

    if((format != kDVFormat_NTSC) && (format != kDVFormat_PAL)) {

        [self release];

        return nil;

    }

    //Customize compression options

    ICMCompressionSessionOptionsSetProperty(options, kQTPropertyClass_ICMCompressionSessionOptions, kICMCompressionSessionOptionsPropertyID_AllowAsyncCompletion, sizeof(Boolean), &boolean);

    ICMCompressionSessionOptionsSetProperty(options, kQTPropertyClass_ICMCompressionSessionOptions, kICMCompressionSessionOptionsPropertyID_Quality, sizeof(CodecQ), &quality);

    //Retrieve extra options directly from DV compressor

    theError = OpenADefaultComponent(compressorComponentType, codec, &component);

    if(theError) {

        NSLog(@"DV component opening failed (error %i)", theError);

        [self release];

        return nil;

    }

    boolean = progressive;

    QTSetComponentProperty(component, kQTPropertyClass_DVCompressor, kDVCompressorPropertyID_ProgressiveScan, sizeof(Boolean), &boolean);

    boolean = wide;

    QTSetComponentProperty(component, kQTPropertyClass_DVCompressor, kDVCompressorPropertyID_AspectRatio16x9, sizeof(Boolean), &boolean);

    settings = NewHandle(0);

    if(settings == NULL) {

        NSLog(@"Memory allocation failed");

        CloseComponent(component);

        [self release];

        return nil;

    }

    theError = ImageCodecGetSettings(component, settings);

    CloseComponent(component);

    if(theError) {

        NSLog(@"ImageCodecGetSettings() failed with error %i", theError);

        DisposeHandle(settings);

        [self release];

        return nil;

    }

    ICMCompressionSessionOptionsSetProperty(options, kQTPropertyClass_ICMCompressionSessionOptions, kICMCompressionSessionOptionsPropertyID_CompressorSettings, sizeof(Handle), &settings);

    //Initialize super class

    if(self = [super initWithCodec:codec pixelsWide:size.width pixelsHigh:size.height options:options]) {

        //We don't need the settings anymore

        DisposeHandle(settings);

        //Create FireWire DV video out QuickTime component

        _displayImageDescription = (ImageDescriptionHandle) NewHandleClear(sizeof(ImageDescription));

        if(_displayImageDescription == NULL) {

            NSLog(@"Memory allocation failed");

            [self release];

            return nil;

        }

        (**_displayImageDescription).idSize = sizeof(ImageDescription);

        (**_displayImageDescription).cType = codec;

        (**_displayImageDescription).width = size.width;

        (**_displayImageDescription).height = size.height;

        (**_displayImageDescription).spatialQuality = codecNormalQuality;

        (**_displayImageDescription).depth = 24;

        (**_displayImageDescription).hRes = 72 << 16;

        (**_displayImageDescription).vRes = 72 << 16;

        (**_displayImageDescription).clutID = -1;

        theError = OpenADefaultComponent(QTVideoOutputComponentType, 'fire', &_displayComponent);

        if(theError == noErr)

        QTVideoOutputSetClientName(_displayComponent, (ConstStr255Param)"DV Exporter");

        theError = QTVideoOutputSetDisplayMode(_displayComponent, (format == kDVFormat_NTSC ? 1 : 2)); //NOTE: 1 = NTSC and 2 = PAL

        if(theError == noErr)

        theError = QTVideoOutputBegin(_displayComponent);

        if(theError == noErr)

        theError = QTVideoOutputGetGWorld(_displayComponent, &displayGWorld);

        if(theError == noErr)

        theError = DecompressSequenceBeginS(&_displayImageSequence, _displayImageDescription, nil, 0, displayGWorld, NULL, &bounds, nil, srcCopy, nil, 0, codecNormalQuality, anyCodec);

        if(theError) {

            NSLog(@"Video out component creation failed (error %i)", theError);

            [self release];

            return nil;

        }

    }

    else

    DisposeHandle(settings);

    return self; 

}

- (void) dealloc

{

    //Destroy resources

    if(_displayImageSequence)

    CDSequenceEnd(_displayImageSequence);

    if(_displayComponent) {

        QTVideoOutputEnd(_displayComponent);

        CloseComponent(_displayComponent);

    }

    if(_displayImageDescription)

    DisposeHandle((Handle)_displayImageDescription);

    [super dealloc];

}

- (void) doneCompressingFrame:(ICMEncodedFrameRef)frame

{

    CodecFlags                      inFlags = 0;

    CodecFlags                      outFlags = 0;

    OSErr                           theError;

    //Send compressed frame data to FireWire DV

    theError = DecompressSequenceFrameS(_displayImageSequence, (Ptr)ICMEncodedFrameGetDataPtr(frame), ICMEncodedFrameGetDataSize(frame), inFlags, &outFlags, nil);

    if(theError)

    NSLog(@"DecompressSequenceFrameS() failed with error %i", theError);

    [super doneCompressingFrame:frame];

}

- (BOOL) exportFrame:(CVPixelBufferRef)frame

{

    return [super compressFrame:frame timeStamp:NAN duration:NAN];

}

@end