bool
qtCanvas::Impl::setupTrack()
{
mTrack = NewMovieTrack(mMovie,
FixRatio(mWidth,1), FixRatio(mHeight,1),
(short)kNoVolume);
if (!CheckMoviesError("NewMovieTrack")) return false;
SCTemporalSettings temporal;
SCGetInfo(mSCComponent, scTemporalSettingsType, &temporal);
mMedia = NewTrackMedia(mTrack,
VideoMediaType, (TimeScale)temporal.frameRate,
nil, 0);
if (!CheckMoviesError("NewTrackMedia" )) return false;
MediaHandler mh = GetMediaHandler(mMedia);
if (!CheckMoviesError("GetMediaHandler")) return false;
ComponentResult err;
err = MediaSetGraphicsMode(mh, graphicsModePreMulColorAlpha, NULL);
if (!CheckError(err, "MediaSetGraphicsMode")) return false;
BeginMediaEdits(mMedia);
if (!CheckMoviesError("BeginMediaEdits" )) return false;
return true;
}
OSErr QTTarg_AddTextToggleButtonTrack (Movie theMovie)
{
Track myTrack = NULL;
Media myMedia = NULL;
MatrixRecord myMatrix;
RGBColor myKeyColor;
Fixed myWidth, myHeight;
TimeValue myDuration = 0L;
TimeValue myTimeScale = 0L;
OSErr myErr = noErr;
//////////
//
// get some information about the target movie
//
//////////
if (theMovie == NULL) {
myErr = paramErr;
goto bail;
}
myWidth = Long2Fix(2 * kButtonWidth);
myHeight = Long2Fix(2 * kButtonHeight);
myDuration = GetMovieDuration(theMovie);
myTimeScale = GetMovieTimeScale(theMovie);
//////////
//
// create a new sprite track in the target movie
//
//////////
myTrack = NewMovieTrack(theMovie, myWidth, myHeight, kNoVolume);
myMedia = NewTrackMedia(myTrack, SpriteMediaType, myTimeScale, NULL, 0);
// set the track matrix to compensate for any existing movie matrix
GetMovieMatrix(theMovie, &myMatrix);
if (InverseMatrix(&myMatrix, &myMatrix))
SetTrackMatrix(myTrack, &myMatrix);
myErr = BeginMediaEdits(myMedia);
if (myErr != noErr)
goto bail;
//////////
//
// add sprite images and sprites to the sprite track; add actions to the sprites
//
//////////
QTTarg_AddTextButtonSamplesToMedia(myMedia, 2 * kButtonWidth, 2 * kButtonHeight, myDuration);
//////////
//
// insert media into track
//
//////////
myErr = EndMediaEdits(myMedia);
if (myErr != noErr)
goto bail;
// add the media to the track
InsertMediaIntoTrack(myTrack, 0, 0, GetMediaDuration(myMedia), fixed1);
//////////
//
// set the sprite track properties
//
//////////
QTTarg_SetTrackProperties(myMedia, kNoQTIdleEvents); // no idle events
myKeyColor.red = myKeyColor.green = myKeyColor.blue = 0xffff; // white
MediaSetGraphicsMode(GetMediaHandler(myMedia), transparent, &myKeyColor);
// make sure that the sprite track is in the frontmost layer
SetTrackLayer(myTrack, kMaxLayerNumber);
SetTrackLayer(myTrack, QTTarg_GetLowestLayerInMovie(theMovie) - 1);
bail:
return(myErr);
}
OSErr QTTarg_MakeDualVRControllerMovie (void)
{
Movie myMovie = NULL;
Track myTrack = NULL;
Media myMedia = NULL;
RGBColor myKeyColor;
Fixed myWidth, myHeight;
FSSpec myFile;
Boolean myIsSelected = false;
Boolean myIsReplacing = false;
StringPtr myPrompt = QTUtils_ConvertCToPascalString(kSpriteSavePrompt);
StringPtr myFileName = QTUtils_ConvertCToPascalString(kSpriteSaveMovieFileName);
long myFlags = createMovieFileDeleteCurFile | createMovieFileDontCreateResFile;
short myResRefNum = 0;
short myResID = movieInDataForkResID;
OSType myType = FOUR_CHAR_CODE('none');
OSErr myErr = noErr;
//////////
//
// create a new movie file
//
//////////
// prompt the user for the destination file name
QTFrame_PutFile(myPrompt, myFileName, &myFile, &myIsSelected, &myIsReplacing);
myErr = myIsSelected ? noErr : userCanceledErr;
if (!myIsSelected)
goto bail;
// create a movie file for the destination movie
myErr = CreateMovieFile(&myFile, FOUR_CHAR_CODE('TVOD'), smSystemScript, myFlags, &myResRefNum, &myMovie);
if (myErr != noErr)
goto bail;
// select the "no-interface" movie controller
myType = EndianU32_NtoB(myType);
SetUserDataItem(GetMovieUserData(myMovie), &myType, sizeof(myType), kUserDataMovieControllerType, 1);
//////////
//
// get some information about the target movie
//
//////////
myWidth = Long2Fix(kVRControlMovieWidth);
myHeight = Long2Fix(kVRControlMovieHeight);
//////////
//
// create a new sprite track in the target movie
//
//////////
myTrack = NewMovieTrack(myMovie, myWidth, myHeight, kNoVolume);
myMedia = NewTrackMedia(myTrack, SpriteMediaType, kVRControlMovieDuration, NULL, 0);
myErr = BeginMediaEdits(myMedia);
if (myErr != noErr)
goto bail;
//////////
//
// add sprite images and sprites to the sprite track; add actions to the sprites
//
//////////
QTTarg_AddVRControllerButtonSamplesToMedia(myMedia, kVRControlMovieWidth, kVRControlMovieHeight, kVRControlMovieDuration);
//////////
//
// insert media into track
//
//////////
myErr = EndMediaEdits(myMedia);
if (myErr != noErr)
goto bail;
// add the media to the track
InsertMediaIntoTrack(myTrack, 0, 0, GetMediaDuration(myMedia), fixed1);
//////////
//
// set the sprite track properties
//
//////////
QTTarg_SetTrackProperties(myMedia, 0); // idle as fast as possible
myKeyColor.red = myKeyColor.green = myKeyColor.blue = 0xffff; // white
MediaSetGraphicsMode(GetMediaHandler(myMedia), transparent, &myKeyColor);
//////////
//
// add the movie resource to the movie file
//
//////////
myErr = AddMovieResource(myMovie, myResRefNum, &myResID, myFile.name);
bail:
if (myResRefNum != 0)
CloseMovieFile(myResRefNum);
if (myMovie != NULL)
DisposeMovie(myMovie);
free(myPrompt);
free(myFileName);
return(myErr);
}
/*
call-seq: enable_alpha()
Enable the straight alpha graphic mode for this track.
This is best used on an overlayed video track which includes some
alpha transparency (such as in a PNG image).
*/
static VALUE track_enable_alpha(VALUE obj)
{
MediaSetGraphicsMode(GetMediaHandler(TRACK_MEDIA(obj)), graphicsModeStraightAlpha, 0);
return obj;
}
