Linux Plumbers Conf 2013

One Line Summary

Abstract

A lot of graphics hardware, particularly in non-desktop media-led cases such as set-top boxes, has dedicated hardware for both media decoding (e.g. MPEG4 to raw YUV), as well as 2D composition. This hardware is much more capable than is exposed through general purpose APIs: for example, overlays give much higher-quality scaling and filtering than using EGL to do the media composition, also at higher performance.

Unfortunately the state of the art for a zerocopy media pipeline involves OpenMAX, passing physical addresses around through userspace, and a huge amount of platform-specific hacks. This talk will cover the pipeline in general, the gaps and issues facing us, and some potential ways forward with both new and existing frameworks.

Tags

gstreamer, V4L2, drm, kms, graphics, media, openmax, wayland, x11

Presentation Materials

Speaker

• Daniel Stone

  Collabora Ltd.
  • Website: http://fooishbar.org/
  • Blog: http://fooishbar.org/

  Biography

  After approximately ten years working on all manner of input device support and living in Melbourne, Daniel realised both of these were poor ideas, and now resides in less-viciously-hot London – which is, as he writes this in the third person, sadly experiencing a level three heatwave alert. He fills his days working as Collabora’s Graphics Domain Lead, arguing with Wayland, GStreamer, WebKit, GLES/EGL and KMS; of which some occasionally bend to his will. He remembers a lot more about X11 than he’d care to admit.

  Sessions

  • * Media decode and composition: bridging the gap
    • Title: Media decode and composition: bridging the gap
    • Microconference: Graphics and Display
    • One Line Summary:

      A look at the issues preventing better usage of media decode and 2D composition hardware

    • slides
    • Speakers: Daniel Stone
  • * IVI and Wayland: why, what, how
    • Title: IVI and Wayland: why, what, how
    • Microconference: Automotive
    • One Line Summary:

      Summarising the current status of IVI on Wayland

    • Speakers: Daniel Stone