Rockchip Display Paths
Rockchip Platform Support
7.9 Rockchip Display Paths
| Sink | Display Environment | Characteristics |
|---|---|---|
waylandsink | Wayland | Composited by Wayland/GPU; supports properties such as display area and layer |
xvimagesink | X11/XVideo | Displays through X11/XVideo and is composited by the GPU |
kmssink | DRM/KMS | Uses a hardware plane directly; requires an available, exclusively owned plane |
rkximagesink | X11 + DRM | Rockchip zero-copy display plugin; requires exclusive access to a hardware plane |
Specify the display area with Wayland:
gst-launch-1.0 videotestsrc \
! waylandsink render-rectangle='<0,0,800,480>'Specify a hardware plane with KMS:
gst-play-1.0 --flags=3 test.mp4 \
--videosink='kmssink plane-id=117'Query DRM planes:
cat /sys/kernel/debug/dri/0/state
modetest -pDifferent planes support different formats. For example, on some SoCs, Cluster planes support AFBC while Esmart planes do not. Before using kmssink or rkximagesink, confirm that the target plane is not occupied by another display client.