Now i have a question about text track movie. I make a slideshow
include text media, but if the text described in Japanese,it will not
show
rightly. I want to know how make a movie that can show text in
Japanese
correctly. I use quicktime api TextMediaAddSample to add text sample
into
the media .In that api ,there is a parameter to set font.Under Japan
language environment ,I set Japanese text font into the api, as well
as the
Osaka font, but the movie show mess code when played with Quicktime
Player.
I sincerely wish someone can give me some suggestion about how to
show Japanese in a movie.
There are 2 ways to do it. If you have the text in UTF-16 format, and
you're using QT 6.4 or later you can do this:
// if we're in QT 6.4 or higher, let it know that the upcoming text
sample is
// encoded in UTF-16 with a byte order mark
if ((err == noErr) && (mQTVersion >= kVers_QT6_4)) {
SInt32* data = (SInt32*)NewPtrClear (sizeof (SInt32));
if (data != NULL) {
*data = 256L;
err = TextMediaSetTextSampleData (textMediaHandler, data, 'encd');
DisposePtr ((Ptr)data);
}
}
// Add the text to the text track!
err = TextMediaAddTextSample (textMediaHandler, (char*)theText, ...
other params here...);
The above assumes that theText is a pointer to a buffer of UTF-16
encoded characters.
You can also set the language of the text track to the proper setting
to get the correct results like this:
// Get the preferred language from the QT Prefs. You can also set it to
a specific value
// if you need it to be something specific.
LangCode code = langEnglish;
QTAtomContainer prefs = NULL;
OSErr err = ::GetQuickTimePreference (FOUR_CHAR_CODE ('lang'),
&prefs);
ThrowIfOSErr_ (err);
// Set the language of the text track's media to the desired value
::SetMediaLanguage (textMedia, code);
Darrin
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