acquireSurface
Acquires a Surface for rendering, suitable for use with Android media player.
Return
The Surface to render on if the SurfaceRenderTexture is valid; otherwise null.
Throws
IllegalStateException
If this resource is closed or invalid.
Note:
The returned Surface is only valid while the SurfaceRenderTexture is valid.
The Surface is released automatically when the SurfaceRenderTexture is closed.
The same Surface instance is returned on every call unless the previously acquired Surface has been released.