QTMovieExtensions.m

//  Some movie code from http://developer.apple.com/samplecode/QTKitCreateMovie/index.html
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <http://www.gnu.org/licenses/>.

#import "QTMovieExtensions.h"


@implementation QTMovie (QTMovieExtensions)

//
// addImagesAsMPEG4
//
// given an array of image file paths (NSString objects), add each
// image to the movie as a new MPEG4 movie frame
//
// Inputs
//		imageFilesArray - an array of image file paths (NSString objects)
//
// Outputs
//		images specified in imageFilesArray are added to movie
//      as new movie frames
//

- (void)addImagesAsMPEG4:(NSArray *)imageFilesArray {
	NSDictionary *myDict = nil;
	long long timeValue = 30;
	long timeScale = 600;
	int i;

	if (!imageFilesArray)
		goto bail;
		
	// when adding images we must provide a dictionary
	// specifying the codec attributes
	myDict = [NSDictionary dictionaryWithObjectsAndKeys:@"mp4v",
														QTAddImageCodecType,
														[NSNumber numberWithLong:codecHighQuality],
														QTAddImageCodecQuality,
														nil];
	if (!myDict)
		goto bail;

	QTTime curTime = QTMakeTime(timeValue, timeScale);

	// iterate over all the images in the array and add
	// them to our movie one-by-one
	for (i = 0; i < [imageFilesArray count]; ++i)
	{
		NSURL *fileUrl = [NSURL fileURLWithPath:[imageFilesArray objectAtIndex:i]];        
		NSImage *anImage = [[NSImage alloc] initWithContentsOfURL:fileUrl];    

		[self addImage:anImage 
				forDuration:curTime
				withAttributes:myDict];
				
		[anImage release];
	}

bail:
	return;
}



- (void)CMSAddImage:(NSImage *)image {
	NSDictionary *myDict = nil;
	long long timeValue = 30;
	long timeScale = 600;
	
	if (!image) return;
	
	// when adding images we must provide a dictionary
	// specifying the codec attributes
	myDict = [NSDictionary dictionaryWithObjectsAndKeys:@"mp4v",
		QTAddImageCodecType,
		[NSNumber numberWithLong:codecHighQuality],
		QTAddImageCodecQuality,
		nil];
	if (!myDict) return;
	
	QTTime curTime = QTMakeTime(timeValue, timeScale);
	
	[self addImage:image forDuration:curTime withAttributes:myDict];		
}









//
// flattenToFilePath
//
// flatten the movie to the specified path
//
// Inputs
//		filePath - destination file path for flattened movie
//
// Outputs
//		movie is flattened to a self-contained movie file
//      specified by the filePath input parameter
//
	
- (BOOL)flattenToFilePath:(NSString *)filePath
{
	NSDictionary	*dict = nil;
	BOOL			success = NO;

	if (!filePath) 
		goto bail;

	// create a dict. with the movie flatten attribute (QTMovieFlatten)
	// which we'll use to flatten the movie to a file below
	
	// specify a 'YES' in the dictionary to flatten to a new movie file
	
	// specify a 'NO' in the dictionary to only create a reference movie
	dict = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] 
				forKey:QTMovieFlatten];
	if (dict)
	{
		// create a new movie file and flatten the movie to the file
		
		// passing the QTMovieFlatten attribute here means the movie
		// will be flattened
		success = [self writeToFile:filePath withAttributes:dict];
	}

bail:
	return success;
}


@end



/*
 
 File: QTMovieExtensions.m
 
 Abstract: QTMovie utility routines, implemented as extensions to the
 QTMovie class.
 
 Version: 1.0
 
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