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      Userland uses dispmanx for rendering graphics and video. With vc4graphics instead of dispmanx, DRM (Direct Rendering Manager) module is used.  DRM is a subsystem of the Linux kernel responsible for interfacing with GPUs of modern video cards. DRM is a kernel module that gives direct hardware access to DRI clients. Westeros-dispmanx is suppressed and westeros-drm is used for rendering.  Westeros-sink is enabled to use v4l2 by modifying soc-path to v4l2.  Westeros was updated to latest revision for supporting video codecs.

List of changes done

• https://code.rdkcentral.com/r/c/components/generic/rdk-oe/meta-cmf-raspberrypi/+/39272
• https://github.com/WebPlatformForEmbedded/meta-wpe/pull/450
• https://github.com/agherzan/meta-raspberrypi/pull/647
• https://github.com/rdkcmf/westeros/commit/2a284afa462656602ea15acfad3150288ed1b6db
• , this pull was modified for CMF as  https://code.rdkcentral.com/r/c/rdk/components/opensource/oe/meta-raspberrypi/+/39347
• https://code.rdkcentral.com/r/c/components/generic/rdk-oe/meta-cmf-raspberrypi/+/39279

• https://code.rdkcentral.com/r/c/rdk/components/opensource/oe/meta-raspberrypi/+/39347

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