This uses a "VM tendency" system wherein the presence of `DoAction` or `DoInitAction` tags defaults the movie to AVM1, while the presence of `DoABC` defaults to AVM2. The presence of a `FileAttributes` tag allows setting the VM tendency in the same manner using it's AS3 bit.
Particularly malformed SWFs may cause execution issues if Flash Player uses a dramatically different system from this.
This involves a new struct called a `FontDescriptor` which is generated whenever a font is registered and used to index the font in the library. When a font is requested, it goes through the descriptor system to get found.
Note that host objects that do so will *not* have access to their standard representation from within member functions - you will need to extend the interface to accomodate for them. This is due to long-standing limitations with type IDs and downcasting with types that bear lifetimes - it's entirely an unsafe operation and exposing such a facility to safe Rust is unsound. However, this will at least let us separate out several things from ScriptObject that don't need to be there for the time being.
Converts the Bitmap character to a proper display object. This can
be instantiated directly in a PlaceObject tag in SWFv9 movies,
compared to the previous versions which indirectly references
bitmaps from Shape tags.
Embed an SWF version of Noto Sans (core/assets/*) into the player.
The player will load this font and use it to render device text.
This is a quicky implementation to get dynamic device text
rendering.
DefineBitsJPEG tags can have some extraneous bytes inside the
stream. Splice these out when decoding the JPEG.
TODO: Docs say this should only happen for SWF versions before 8?