On Tue, Nov 6, 2018 at 10:40 AM Neil Armstrong <narmstrong@xxxxxxxxxxxx> wrote: > > The Amlogic Meson GX SoCs support an Overlay plane behind the primary > plane for video rendering. > > This Overlay plane support various YUV layouts : > - YUYV > - NV12 / NV21 > - YUV444 / 422 / 420 / 411 / 410 > > The scaler supports a wide range of scaling ratios, but for simplicity, > plane atomic check limits the scaling from x5 to /5 in vertical and > horizontal scaling. > > The z-order is fixed and always behind the primary plane and cannot be changed. > > The scaling parameter algorithm was taken from the Amlogic vendor kernel > code and rewritten to match the atomic universal plane requirements. > > The video rendering using this overlay plane support has been tested using > the new Kodi DRM-KMS Prime rendering path along the in-review V4L2 Mem2Mem > Hardware Video Decoder up to 3840x2160 NV12 frames on various display modes. > > Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx> > --- > drivers/gpu/drm/meson/Makefile | 2 +- > drivers/gpu/drm/meson/meson_canvas.c | 7 +- > drivers/gpu/drm/meson/meson_canvas.h | 11 +- > drivers/gpu/drm/meson/meson_crtc.c | 216 +++++++++++- > drivers/gpu/drm/meson/meson_drv.c | 29 +- > drivers/gpu/drm/meson/meson_drv.h | 52 +++ > drivers/gpu/drm/meson/meson_overlay.c | 586 ++++++++++++++++++++++++++++++++ > drivers/gpu/drm/meson/meson_overlay.h | 14 + > drivers/gpu/drm/meson/meson_registers.h | 3 + > drivers/gpu/drm/meson/meson_viu.c | 15 + > drivers/gpu/drm/meson/meson_vpp.c | 44 ++- > 11 files changed, 971 insertions(+), 8 deletions(-) > create mode 100644 drivers/gpu/drm/meson/meson_overlay.c > create mode 100644 drivers/gpu/drm/meson/meson_overlay.h > Tested by rendering video with: - gstreamer 1.14.4 using kmssink - ffmpeg-drm (https://github.com/Elyotna/ffmpeg-drm), by applying this patch on top of the video decoder patch series. Used different resolutions and pixel aspect ratios. Tested-by: Maxime Jourdan <mjourdan@xxxxxxxxxxxx> [snip] _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
