QTMTB 09 - New Extended Features in the Base Media Handler
Technical Q&A's
QTMTB 09 - New Extended Features in the Base Media Handler (1-May-95)
Three new calls and a new flag extend the Base Media Handler interface. These
features provide higher quality movie playback, but incur a performance
penalty. The Text Media Handler takes advantage of these new calls and provides
built-in support for anti-aliased text. It is achieved through a playback hint
to the base media handler, which the Apple Text Media Handler derives. This
hint, hintsHighQuality, has been discussed in the "Movie Toolbox Enhancements"
section earlier in this Note.
The MediaSetHints and MediaGetOffscreenBufferSize routines were added to the
Derived Media Handler interface to support high-quality mode. Since the Apple
Text Media Handler derives the base media handler, it can use these new calls
to support anti-aliased text.
