/*

File: FrameMovieExporter.m

Abstract: Implements the FrameMovieExporter class.

Version: 1.0

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*/

#import "FrameMovieExporter.h"

@implementation FrameMovieExporter

- (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) initWithPath:(NSString*)path codec:(CodecType)codec pixelsWide:(unsigned)width pixelsHigh:(unsigned)height options:(ICMCompressionSessionOptionsRef)options

{

    //ICMCompressionSessionOptionsRef   options = [[self class] defaultOptions];

    Boolean                         boolean = true;

    OSErr                           theError;

    Handle                          dataRef;

    OSType                          dataRefType;

    //Check parameters

    if(![path length]) {

        [self release];

        return nil;

    }

    //Customize compression options - We must enable P & B frames explicitely

    /*

    ICMCompressionSessionOptionsSetAllowTemporalCompression(options, true);

    ICMCompressionSessionOptionsSetAllowFrameReordering(options, true);

    ICMCompressionSessionOptionsSetAllowFrameTimeChanges(options, true);

    ICMCompressionSessionOptionsSetDurationsNeeded(options, true);

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

    */

    //ICMCompressionSessionOptionsCreateCopy(kCFAllocatorDefault, options, &options);

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

    //[(id)options autorelease];

    //Initialize super class

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

        //Create movie file

        theError = QTNewDataReferenceFromFullPathCFString((CFStringRef)path, kQTNativeDefaultPathStyle, 0, &dataRef, &dataRefType);

        if(theError) {

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

            [self release];

            return nil;

        }

        theError = CreateMovieStorage(dataRef, dataRefType, 'TVOD', smCurrentScript, createMovieFileDeleteCurFile, &_dataHandler, &_movie);

        if(theError) {

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

            [self release];

            return nil;

        }

        //Add track

        _track = NewMovieTrack(_movie, width << 16, height << 16, 0);

        theError = GetMoviesError();

        if(theError) {

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

            [self release];

            return nil;

        }

        //Create track media

        _media = NewTrackMedia(_track, VideoMediaType, ICMCompressionSessionGetTimeScale(_compressionSession), 0, 0);

        theError = GetMoviesError();

        if(theError) {

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

            [self release];

            return nil;

        }

        //Prepare media for editing

        theError = BeginMediaEdits(_media);

        if(theError) {

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

            [self release];

            return nil;

        }

    }

    return self; 

}

- (void) dealloc

{

    OSErr                           theError;

    if(_media) {

        //Make sure all frames have been processed by the compressor

        [self flushFrames];

        //End media editing

        theError = EndMediaEdits(_media);

        if(theError)

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

        theError = ExtendMediaDecodeDurationToDisplayEndTime(_media, NULL);

        if(theError)

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

        //Add media to track

        theError = InsertMediaIntoTrack(_track, 0, 0, GetMediaDisplayDuration(_media), fixed1);

        if(theError)

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

        //Write movie

        theError = AddMovieToStorage(_movie, _dataHandler);

        if(theError)

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

    }

    //Close movie file

    if(_dataHandler)

    CloseMovieStorage(_dataHandler);

    if(_movie)

    DisposeMovie(_movie);

    [super dealloc];

}

- (void) doneCompressingFrame:(ICMEncodedFrameRef)frame

{

    OSErr                           theError;

    //Add frame to track media - Ignore the last frame which will have a duration of 0

    if(ICMEncodedFrameGetDecodeDuration(frame) > 0) {

        theError = AddMediaSampleFromEncodedFrame(_media, frame, NULL);

        if(theError)

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

    }

    [super doneCompressingFrame:frame];

}

- (BOOL) exportFrame:(CVPixelBufferRef)frame timeStamp:(NSTimeInterval)timestamp

{

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

}

@end