source/SlideShowImport.h

/*
    File:       SlideShowImport.h
    
    Description:    Slide Show Importer include file.
 
    Author:     Apple Developer Support, original code by Jim Batson of QuickTime engineering
 
    Copyright:  © Copyright 2001-2002 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)
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    Change History (most recent first):
    
       <2>      3/22/02     SRK             Carbonized/Win32
       <1>      4/01/01     Jim Batson      first file
*/
 
// ---------------------------------------------------------------------------------
//      ¥ Includes ¥
// ---------------------------------------------------------------------------------
 
#if __APPLE_CC__
    #include <QuickTime/QuickTime.h>
#else
    #include <QuickTimeComponents.h>
#endif
 
// ---------------------------------------------------------------------------------
//      ¥ Structure Definitions ¥
// ---------------------------------------------------------------------------------
typedef struct
    {
    ComponentInstance   self;
    }
    SlideShowImportGlobalsRecord, *SlideShowImportGlobals;
 
 
enum {
    kSlideShowImageKind = 'imag',
    kSlideShowEffectKind = 'effe',
    kSlideShowAudioKind = 'audi'
};
 
    
typedef struct
    {
    TimeValue   duration;
    StringPtr   src;
    
    // used during import
    Fixed       discoveredWidth;
    Fixed       discoveredHeight;
    
    short       dataRefIndex;
    TimeValue   sampleTime;
    }
    SlideShowImageRecord, *SlideShowImage;
 
typedef struct
    {
    TimeValue       duration;
    StringPtr       type;
    
    // 
    QTAtomContainer effectDescription;
    }
    SlideShowEffectRecord, *SlideShowEffect;
    
typedef struct 
    {
    StringPtr   src;
    Boolean     dontScaleImagesAndEffectsToThisMovie;
    }
    SlideShowMovieRecord, *SlideShowMovie;
    
typedef struct SlideShowElementRecord
    {
        struct SlideShowElementRecord * nextElement;
 
        OSType                  elementKind;    
        
        SlideShowImageRecord    image;
        SlideShowEffectRecord   effect;
        SlideShowMovieRecord    movie;
    }
    SlideShowElementRecord, *SlideShowElement;
 
typedef struct
    {
    long            movieHeight;
    long            movieWidth;
    SlideShowImage  images;
    Movie           theMovie;
    Handle          dataRef;
    OSType          dataRefType;
    
    long            numImages;
    long            numEffects;
    long            numAudioTracks;
    
    SlideShowElement    elements;       // linked list of SlideShowElement records
 
    // used during construction of movie
    Track           theImageTrack;
    Media           theImageMedia;
    
    
    SlideShowImage  thePreviousSource;      // source A for the transition
    SlideShowEffect thePendingEffect;       // 
    
    }
    SlideShowFileRecord, *SlideShowFile;
 
// ---------------------------------------------------------------------------------
//      ¥ Defines ¥
// ---------------------------------------------------------------------------------
 
enum
    {
    element_slideshow = 1,
    element_image,
    element_effect,
    element_audio,
    SLIDESHOW_NUM_ELEMENTS,
    element_NOTFOUND = SLIDESHOW_NUM_ELEMENTS
    };
 
enum
    {
    attr_height = 1,
    attr_width,
    attr_src,
    attr_dur,
    attr_type,
    attr_scale,
    SLIDESHOW_NUM_ATTRIBUTES,
    attr_NOTFOUND = SLIDESHOW_NUM_ATTRIBUTES
    };
 
enum
    {
    attributeNotFound = -1
    };
 
// ---------------------------------------------------------------------------------
//      ¥ Function Prototypes ¥
// ---------------------------------------------------------------------------------
 
ComponentResult     ReadSlideShowFile(SlideShowFile theFile);
ComponentInstance   CreateXMLParserForSlideShow();
ComponentResult     GetRootElementAttributes(XMLAttribute *element, SlideShowFile theFile);
ComponentResult     ParseAndSaveImage(XMLElement *element, SlideShowFile theFile);
ComponentResult     ParseEffectElement(XMLElement *element, SlideShowFile theFile);
ComponentResult     ParseAudioElement(XMLElement *element, SlideShowFile theFile);
ComponentResult     BuildMovie(SlideShowFile theSlideShowFile);
void                DisposeSlideShowFile(SlideShowFile theFile);
void                DisposeAllElements(SlideShowFile theFile);
void                DisposeElementFields(SlideShowElement element);
void                AddSlideShowElement(SlideShowFile theFile, SlideShowElement theElement);
ComponentResult     GetStringAttribute(XMLAttributePtr attributes, short attributeType, StringPtr *theString);
ComponentResult     GetIntegerAttribute(XMLAttributePtr attributes, short attributeType, long *theNumber);
long                GetAttributeIndex(XMLAttributePtr attributes, short attributeType);
OSErr               AddImageToMovie(SlideShowFile theFile, SlideShowImage theImage, TimeValue *theTime);
OSErr               AddAudioToMovie(SlideShowFile theFile, SlideShowMovie theImage, TimeValue *theTime);
long                max(long num1, long num2);
Boolean             isAbsoluteURL(char *theURL);
OSErr               CreateDataRefFromURL(char* theURL, Handle baseDRef, OSType baseDRefType, Handle *dref, OSType *drefType);
ComponentResult     CreateEffectTrack(SlideShowFile theFile, SlideShowImage sourceA, SlideShowImage sourceB, SlideShowEffect effect, TimeValue *theTime);
ComponentResult     CreateImageTrackForEffect(SlideShowFile theFile, TimeValue effectOffset, TimeValue duration, long dataRefIndex, Track *sourceTrack, TimeValue sampleTime);
Handle              CreateHandleDataRef();
OSType              GetEffectType(StringPtr theEffect, SMPTEWipeType *theWipeType);