MediaPlayer.java has 3 new methods:
* newRequest creates a Parcel that can be used to send data to the
native player using invoke.
* invoke issues synchronous calls to the native player using opaque
parcels for the request and reply.
IMediaPlayer.h has 1 new abstract method:
* invoke
The Midi and Vorbis players have a stub for these. So far only PV
makes use of that new feature.
To avoid any copy overhead, the JNI interface uses Parcel as a java
object (no serialization/copy happens at the JNI layer).
The remote interface token is inserted when the Parcel is constructed
in java. That way the parcel is already routable when it reaches
IMediaPlayer.cpp (proxy). No extra copy is needed there.
passing a null surface. The API is now enabled to change the surface while
the video is playing. This could allow orientation changes during playback
or to allow the audio track from a video to play in the background.
NOTE: There are still changes required to pmem driver to allow remapping
shared physical memory into a process in order for this to work. This
change only enables the API to send the appropriate calls when the lower
level code supports it.
