//////////

//

//  File:       QTUtils.c

//

//  Contains:   QuickTime movie toolbox utility functions.

//

//  Written by: Apple Developer Technical Support

//

//  Copyright:  © 2001 by Apple Computer, Inc., all rights reserved.

//

//  Change History (most recent first):

//     

//     <1>      6/12/01 srk     first file

//

//////////

/*

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 redistribute this Apple software.

 In consideration of your agreement to abide by the following terms, and subject to these 

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 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

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 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, 

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 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 

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*/

#include <Carbon/Carbon.h>

#include <QuickTime/QuickTime.h>

#include <AppKit/AppKit.h>

#include "QTUtils.h"

static StringPtr MakeMovieTimeDisplayString(long    movieTotalSeconds);

static StringPtr MakeMovieTimeScaleDisplayString(long   movieTimeScale);

//////////

//

// QTUtils_IsAutoPlayMovie

//

// Get the autoplay state of a movie file.

//

// A movie file can have information about its autoplay state in a user data item of type 'play'.

// If the movie doesn't contain an item of this type, then we'll assume that it doesn't autoplay.

// If it does contain an item of this type, then the item data (a Boolean) is 0 for normal play

// and 1 for autoplay.

//

//////////

Boolean QTUtils_IsAutoPlayMovie (Movie theMovie)

{

    UserData        myUserData = NULL;

    Boolean         myAutoPlay = false;

    OSErr           myErr = paramErr;

    // make sure we've got a movie

    if (theMovie == NULL)

        return(myAutoPlay);

    // get the movie's user data list

    myUserData = GetMovieUserData(theMovie);

    if (myUserData != NULL) {

        myErr = GetUserDataItem(myUserData, &myAutoPlay, sizeof(myAutoPlay), FOUR_CHAR_CODE('play'), 0);

        if (myErr != noErr)

            myAutoPlay = false;

    }

    return(myAutoPlay);

}

//////////

//

// MakeMovieTimeDisplayString

//

// Construct a string of the form "00:00:00" corresponding to the movie time.

//

//////////

static StringPtr MakeMovieTimeDisplayString(long    movieTotalSeconds)

{

    Str255          tempString;

    StringPtr       finalString;

    long            movieHours;

    long            movieMinutes;

    long            movieSeconds;

    finalString = NewPtr(sizeof(Str255));

    finalString[0] = 0;

    /* This is the readout that says something like: Ò2 minutes 5 secondsÓ */

    movieHours = movieTotalSeconds / 60 * 60;

    movieMinutes = movieTotalSeconds / 60;

    movieSeconds = movieTotalSeconds % 60;

    tempString[0] = 0;

    if (movieHours != 0)

    {           

        if (movieHours < 10)

        {

            PLstrcat(finalString, "\p0");

        }

        NumToString(movieHours, tempString);

        PLstrcat(finalString, (ConstStr255Param)&tempString);

    }

    else

    {

        PLstrcat(finalString,"\p00");

    }

    PLstrcat(finalString,"\p:");

    tempString[0] = 0;

    if (movieMinutes != 0)

    {           

        if (movieMinutes < 10)

        {

            PLstrcat(finalString, "\p0");

        }

        NumToString(movieMinutes, tempString);

        PLstrcat(finalString, (ConstStr255Param)&tempString);

    }

    else

    {

        PLstrcat(finalString,"\p00");

    }

    PLstrcat(finalString,"\p:");

    tempString[0] = 0;

    if (movieSeconds != 0)

    {

        if (movieSeconds < 10)

        {

            PLstrcat(finalString, "\p0");

        }

        NumToString(movieSeconds, tempString);

        PLstrcat(finalString, (ConstStr255Param)&tempString);

    }

    else

    {

        PLstrcat(finalString,"\p00");

    }

    /* Now, if the movie is shorter than one second long (Òzero secondsÓ), but

        _not_ zero duration, handle that case specially.

        */

    if ((movieMinutes == 0) && (movieSeconds == 0) && (movieHours == 0) && (movieTotalSeconds != 0))

    {

        finalString[0] = 0;

        PLstrcat(finalString,"\pless than one second");

    }

    p2cstrcpy(finalString, (ConstStr255Param)finalString);

    return finalString;

}

//////////

//

// MakeMovieTimeScaleDisplayString

//

// Construct a display string for the movie time scale.

//

//////////

static StringPtr MakeMovieTimeScaleDisplayString(long   movieTimeScale)

{

    StringPtr       finalString;

    finalString = NewPtr(sizeof(Str255));

    finalString[0] = 0;

    NumToString(movieTimeScale, finalString);

    p2cstrcpy(finalString, (ConstStr255Param)finalString);

    return finalString;

}

//////////

//

// GetMovieDurationAsString

//

// Construct a string of the form "00:00:00" corresponding to the movie duration.

//

//////////

NSString *GetMovieDurationAsString(Movie theMovie)

{

    StringPtr   movieDurationString = MakeMovieTimeDisplayString(GetMovieDuration(theMovie) / GetMovieTimeScale(theMovie));

    NSString    *movieDurationNSString = [NSString stringWithCString:movieDurationString];

    DisposePtr((Ptr)movieDurationString);

    return movieDurationNSString;

}

//////////

//

// GetMovieTimeScaleAsString

//

// Construct a string of the form "00:00:00" corresponding to the movie current time.

//

//////////

NSString *GetMovieTimeScaleAsString(Movie theMovie)

{

    StringPtr   timeScaleString = MakeMovieTimeScaleDisplayString(GetMovieTimeScale(theMovie));

    NSString    *timeScaleNSString = [NSString stringWithCString:timeScaleString];

    DisposePtr((Ptr)timeScaleString);

    return timeScaleNSString;

}