/*

    File:       GetFile.c

    Description: VideoFrameToGWorld is an example of decompressing frames from a video track

                 into an offscreen buffer so the pixels can be manipulated at a later time.

    Author:     based on code from QTShell sample

    Copyright:  © Copyright 2000 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

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

                ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    Change History (most recent first): <1> 4/1/00 initial release

*/

#include "VideoFrameToGWorld.h"

//////////

//

// GetOneFileWithPreview

// Display the appropriate file-opening dialog box, with an optional QuickTime preview pane. If the user

// selects a file, return information about it using the theFSSpecPtr parameter.

//

// Note that both StandardGetFilePreview and NavGetFile use the function specified by theFilterProc as a

// file filter. This framework always passes NULL in the theFilterProc parameter. If you use this function

// in your own code, keep in mind that on Windows the function specifier must be of type FileFilterUPP and 

// on Macintosh it must be of type NavObjectFilterUPP. (You can use the QTFrame_GetFileFilterUPP to create

// a function specifier of the appropriate type.) Also keep in mind that Navigation Services expects a file 

// filter function to return true if a file is to be displayed, while the Standard File Package expects the

// filter to return false if a file is to be displayed.

//

//////////

OSErr GetOneFileWithPreview (short theNumTypes, TypeListPtr theTypeList, FSSpecPtr theFSSpecPtr, void *theFilterProc)

{

#if TARGET_OS_WIN32

    StandardFileReply   myReply;

#endif

#if TARGET_OS_MAC

    NavReplyRecord      myReply;

    NavDialogOptions    myDialogOptions;

    NavTypeListHandle   myOpenList = NULL;

    NavEventUPP         myEventUPP = NewNavEventUPP(HandleNavEvent);

#endif

    OSErr               myErr = noErr;

    if (theFSSpecPtr == NULL)

        return(paramErr);

#if TARGET_OS_WIN32

    // prompt the user for a file

    StandardGetFilePreview((FileFilterUPP)theFilterProc, theNumTypes, (ConstSFTypeListPtr)theTypeList, &myReply);

    if (!myReply.sfGood)

        return(userCanceledErr);

    // make an FSSpec record

    myErr = FSMakeFSSpec(myReply.sfFile.vRefNum, myReply.sfFile.parID, myReply.sfFile.name, theFSSpecPtr);

#endif

#if TARGET_OS_MAC

    // specify the options for the dialog box

    NavGetDefaultDialogOptions(&myDialogOptions);

    myDialogOptions.dialogOptionFlags -= kNavNoTypePopup;

    myDialogOptions.dialogOptionFlags -= kNavAllowMultipleFiles;

    BlockMoveData(kApplicationName, myDialogOptions.clientName, kApplicationName[0] + 1);

    // create a handle to an 'open' resource

    myOpenList = (NavTypeListHandle)CreateOpenHandle(kApplicationSignature, theNumTypes, theTypeList);

    if (myOpenList != NULL)

        HLock((Handle)myOpenList);

    // prompt the user for a file

    myErr = NavGetFile(NULL, &myReply, &myDialogOptions, myEventUPP, NULL, (NavObjectFilterUPP)theFilterProc, myOpenList, NULL);

    if ((myErr == noErr) && myReply.validRecord) {

        AEKeyword       myKeyword;

        DescType        myActualType;

        Size            myActualSize = 0;

        // get the FSSpec for the selected file

        if (theFSSpecPtr != NULL)

            myErr = AEGetNthPtr(&(myReply.selection), 1, typeFSS, &myKeyword, &myActualType, theFSSpecPtr, sizeof(FSSpec), &myActualSize);

        NavDisposeReply(&myReply);

    }

    if (myOpenList != NULL) {

        HUnlock((Handle)myOpenList);

        DisposeHandle((Handle)myOpenList);

    }

    DisposeNavEventUPP(myEventUPP);

#endif

    return(myErr);

}

//////////

//

// CreateOpenHandle

// Get the 'open' resource or dynamically create a NavTypeListHandle.

//

//////////

Handle CreateOpenHandle (OSType theApplicationSignature, short theNumTypes, TypeListPtr theTypeList)

{

    Handle          myHandle = NULL;

    // see if we have an 'open' resource...

    myHandle = Get1Resource('open', 128);

    if ( myHandle != NULL && ResError() == noErr ) {

        DetachResource( myHandle );

        return myHandle;

    } else {

        myHandle = NULL;

    }

    // nope, use the passed in types and dynamically create the NavTypeList

    if (theTypeList == NULL)

        return myHandle;

    if (theNumTypes > 0) {

        myHandle = NewHandle(sizeof(NavTypeList) + (theNumTypes * sizeof(OSType)));

        if (myHandle != NULL) {

            NavTypeListHandle   myOpenResHandle = (NavTypeListHandle)myHandle;

            (*myOpenResHandle)->componentSignature = theApplicationSignature;

            (*myOpenResHandle)->osTypeCount = theNumTypes;

            BlockMoveData(theTypeList, (*myOpenResHandle)->osType, theNumTypes * sizeof(OSType));

        }

    }

    return myHandle;

}

//////////

//

// HandleNavEvent

// A callback procedure that handles events while a Navigation Service dialog box is displayed.

//

//////////

PASCAL_RTN void HandleNavEvent(NavEventCallbackMessage theCallBackSelector, NavCBRecPtr theCallBackParms, void *theCallBackUD)

{

#pragma unused(theCallBackUD)

    WindowReference     myWindow = NULL;    

    if (theCallBackSelector == kNavCBEvent) {

        switch (theCallBackParms->eventData.eventDataParms.event->what) {

            case updateEvt:

#if TARGET_OS_MAC

                // Handle Update Event

#endif

                break;

            case nullEvent:

                // Handle Null Event

                break;

        }

    }

}