I am trying to create a timecode track for a movie, as it is being
imported. When I run the code, it returns: -2050 badDataRefIndex.. It
stops at AddMediaSample2, with this error. From reading what little I
can find on Apple's site, the errors appear to be caused by
NewTrackMedia not having a data reference. So.. if I supply a data
reference from my video track, or an empty handle as a data ref, I
get: -2043 dataNotOpenForWrite.
Here is a snippet of code, based upon Electric Image movie importer..
if ((tcTrack == NULL) && (doTimeCode)) {
// Create a new timecode track
tcTrack = NewMovieTrack
(theMovie, // Specify the Movie
(**videoDesc).width << 16, // A fixed denoting width of the
track, in pixels.
(**videoDesc).height << 16, // A fixed denoting height of the
track, in pixels
kNoVolume); // Specifies the
volume setting of the track, kNoVolume = 0
// Create a media for the track. The media
refers to the actual data samples used by the track.
tcMedia = NewTrackMedia
(tcTrack, // Specifies the track for this operation
TimeCodeMediaType, // Type of media to create
kTimeScale, // Set the time scale, this defines the
media's time coordinate system
NULL, // Specifies the data reference
0); // Specifies the type of data reference
if (err = GetMoviesError()) goto bail;
tcHandler = GetMediaHandler(tcMedia);
if (tcHandler == NULL)
goto bail;
}
....
Get my timecode records and tc defs built.
....
SetTrackEnabled(tcTrack, TRUE);
err = TCTimeCodeToFrameNumber(tcHandler, &
(**tcDesc).timeCodeDef, &tcRecord, *tcRecordHandle);
**tcRecordHandle = EndianS32_NtoB(**tcRecordHandle);
err = AddMediaSample2(tcMedia, // Specifies
the media for this operation
(UInt8 *)
*tcRecordHandle,
(ByteCount)
GetHandleSize((Handle)tcRecordHandle),
frameDuration,
0,
(SampleDescriptionHandle)tcDesc, // Handle to a sample
description
1, // Specifies the number of samples
contained in the reference
0, // Contains flags that control the
operation
NULL); // Returns the time to Decode sample. NULL
for now.
I hope someone can point me in the right direction.
Bob..
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