Self-contained Movie Handle?

[Terry]

I want to put a movie file into a single self-contained handle that I can
store and retrieve and play back. PutMovieIntoHandle wont work because it
does not put the movie *data* into the handle.

I tried flattening the movie into a handle with FlattenMovieData as shown in
<[url]http://developer.apple.com/samplecode/Sample_Code/QuickTime/Importers_and_E[/url]
xporters/qtflattentohandle.htm>

It appears to make a flat movie handle, but then I can't seem to make a
movie from it. NewMovieFromDataRef returns noMovieFound.

How can I turn the handle back into a movie?
Or, how else should I make the handle?

Thanks.


Handle TestMovieFileToHandle(FSSpec* spec)
{
OSErr err = noErr;
Movie movie = NULL;
Movie flatMovie = NULL;
Movie newMovie = NULL;
short refnum = 0;
short resID = 0;
Boolean changed = false;
Str255 movieName = "\p";
Handle h = NULL;
DataReferenceRecord dataRefRec;

err = OpenMovieFile(spec, &refnum, fsRdPerm);
err = NewMovieFromFile( &movie,
refnum,
&resID,
movieName,
newMovieActive,
&changed);

dataRefRec.dataRefType = HandleDataHandlerSubType;
dataRefRec.dataRef = NewHandle(sizeof(Handle));

h = NewHandle(0);
*((Handle*)(*dataRefRec.dataRef)) = h;

flatMovie = FlattenMovieData( movie,
flattenFSSpecPtrIsDataRefRecordPtr,
(FSSpec *)&dataRefRec,
0,
smSystemScript,
0);

// flatMovie looks OK
// Verify there is data in our handle
long hSize = GetHandleSize(h);
// Yep, about 14KB
// Now, see if we can create a movie from our h handle

err = NewMovieFromDataRef( &newMovie,
newMovieActive,
NULL,
h,
HandleDataHandlerSubType);

// Nope, err is -2048 (noMovieFound) :-(

return h;
}

[David Phillip Oster]

In article <BB970129.1F844%a@b.com>, Terry <a@b.com> wrote:

> It appears to make a flat movie handle, but then I can't seem to make a
> movie from it. NewMovieFromDataRef returns noMovieFound.
>
> How can I turn the handle back into a movie?
> Or, how else should I make the handle?

> dataRefRec.dataRefType = HandleDataHandlerSubType;
> dataRefRec.dataRef = NewHandle(sizeof(Handle));
>
> h = NewHandle(0);
> *((Handle*)(*dataRefRec.dataRef)) = h;
>
> flatMovie = FlattenMovieData( movie,
> flattenFSSpecPtrIsDataRefRecordPtr,
> (FSSpec *)&dataRefRec,
> 0,
> smSystemScript,
> 0);
>
> // flatMovie looks OK
> // Verify there is data in our handle
> long hSize = GetHandleSize(h);
> // Yep, about 14KB
> // Now, see if we can create a movie from our h handle
>
> err = NewMovieFromDataRef( &newMovie,
> newMovieActive,
> NULL,
> h, // <-- bug
> HandleDataHandlerSubType);
>

I've pointed you at your bug, above.

h is not a data ref. dataRefRec.dataRef is. NewMovieFromDataRef wants a
data ref.

[Terry]

Thanks David. That was indeed a problem. I also needed to use the flag
flattenAddMovieToDataFork. And, if I ever try to use a saved copy of the
handle, I have to do this:

long trackCount = GetMovieTrackCount(newMovie);
long track;
for (track=1;track<=trackCount;track++) {
Media media = GetTrackMedia(GetMovieIndTrack(newMovie, track));
short dataRefCount = 0;
GetMediaDataRefCount(media, &dataRefCount);
long dref;
for (dref=1;dref<=dataRefCount;dref++) {
err = SetMediaDataRef( media,
dref,
dataReferenceHandle,
HandleDataHandlerSubType );
} }


Now, this all works in my app. But, I would like it if I could put the
handle data on the clipboard as a 'moov' and paste it into QT Player, or the
scrapbook. I can almost get it to work if I include the flag
flattenForceMovieResourceBeforeMovieData. The scrapbook and QT Player know
the size and number of frames and act like they can play it, but there are
no images -- everything is blank.

IF I use the original handle (not a copy) made by FlattenMovieData, then the
movies draw and play in QT Player, but only until my app disposes of ITS
handle.

Is there any way to fix this?

Thanks.

> In article <BB970129.1F844%a@b.com>, Terry <a@b.com> wrote:
>

>> It appears to make a flat movie handle, but then I can't seem to make a
>> movie from it. NewMovieFromDataRef returns noMovieFound.
>>
>> How can I turn the handle back into a movie?
>> Or, how else should I make the handle?

>

>> dataRefRec.dataRefType = HandleDataHandlerSubType;
>> dataRefRec.dataRef = NewHandle(sizeof(Handle));
>>
>> h = NewHandle(0);
>> *((Handle*)(*dataRefRec.dataRef)) = h;
>>
>> flatMovie = FlattenMovieData( movie,
>> flattenFSSpecPtrIsDataRefRecordPtr,
>> (FSSpec *)&dataRefRec,
>> 0,
>> smSystemScript,
>> 0);
>>
>> // flatMovie looks OK
>> // Verify there is data in our handle
>> long hSize = GetHandleSize(h);
>> // Yep, about 14KB
>> // Now, see if we can create a movie from our h handle
>>
>> err = NewMovieFromDataRef( &newMovie,
>> newMovieActive,
>> NULL,
>> h, // <-- bug
>> HandleDataHandlerSubType);
>>

>
> I've pointed you at your bug, above.
>
> h is not a data ref. dataRefRec.dataRef is. NewMovieFromDataRef wants a
> data ref.