Crate framebuffer

Framebuffer device.

Provides interfaces for reading, mapping, and managing the format of the framebuffer.

The function framebuffer is used to create two structs: Framebuffer, which is used to map an area of memory for the guest to write to, and FramebufferAccess, which is transformed into a View to allow the VNC server to read from that memory. In HvLite, the Framebuffer is used to create a FramebufferDevice and a FramebufferLocalControl which share state using an inner mutex. The latter implements FramebufferControl which provides the necessary interfaces for a video device to control the framebuffer. In Underhill, the format sender is extracted from the framebuffer and used to create a different struct that implements the same trait.

This is separate from the synthetic device because its lifetime is separate from that of the synthetic video VMBus channel.

Structs

• Framebuffer
  The video framebuffer to be provided to the device.
• FramebufferAccess
  An accessor for the framebuffer. Can be sent cross-process via mesh.
• FramebufferDevice
  A chipset device for the framebuffer.
• FramebufferLocalControl
  Used to control a framebuffer running in the same process
• SavedState
  Saved state.
• View
  A mapped view of the framebuffer.

Constants

• FRAMEBUFFER_SIZE
  The framebuffer size. In the future, this will be variable.

Functions

• framebuffer
  Creates a framebuffer and an object that can be used to read from it. The framebuffer should be allocated prior to calling this function.