[Libva] Parse and render in different threads?

[Andreas Larsson]

Hi!

Do I have to perform bitstream parsing and vaRenderPicture in separate threads to maintain best performance. I.e. do vaRenderPicture block or are those calls buffered and handled asynchronously by the driver/chip, like OpenGL?

As it is, I generate MPEG2 data and for each slice I call vaRenderPicture before I generate the next slice, so if vaRenderPicture blocks this would drain my performance completly.

Kind regards, Andreas Larsson