| 1 | //! Where frames go and input comes from. The set is closed: bare metal and |
| 2 | //! a window on another compositor, and later a headless one for tests. |
| 3 | |
| 4 | use crate::drm::Drm; |
| 5 | use crate::nested::Host; |
| 6 | use monolith_layout::OutputId; |
| 7 | use smithay::backend::drm::DrmNode; |
| 8 | use smithay::output::Output; |
| 9 | use smithay::wayland::drm_syncobj::DrmSyncobjState; |
| 10 | |
| 11 | pub enum Backend { |
| 12 | /// Before `drm::init` or `nested::init` has run. |
| 13 | Starting, |
| 14 | Drm(Box<Drm>), |
| 15 | Nested(Box<Host>), |
| 16 | } |
| 17 | |
| 18 | impl Backend { |
| 19 | pub fn drm(&self) -> Option<&Drm> { |
| 20 | match self { |
| 21 | Backend::Drm(d) => Some(d), |
| 22 | _ => None, |
| 23 | } |
| 24 | } |
| 25 | |
| 26 | pub fn drm_mut(&mut self) -> Option<&mut Drm> { |
| 27 | match self { |
| 28 | Backend::Drm(d) => Some(d), |
| 29 | _ => None, |
| 30 | } |
| 31 | } |
| 32 | |
| 33 | pub fn nested(&self) -> Option<&Host> { |
| 34 | match self { |
| 35 | Backend::Nested(h) => Some(h), |
| 36 | _ => None, |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | pub fn nested_mut(&mut self) -> Option<&mut Host> { |
| 41 | match self { |
| 42 | Backend::Nested(h) => Some(h), |
| 43 | _ => None, |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | /// The smithay output behind a layout output. |
| 48 | pub fn output(&self, o: OutputId) -> Option<Output> { |
| 49 | match self { |
| 50 | Backend::Drm(d) => d.output(o), |
| 51 | Backend::Nested(h) => (h.output_id == o).then(|| h.output.clone()), |
| 52 | Backend::Starting => None, |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | /// The node clients allocate dmabufs on, known on bare metal. |
| 57 | pub fn render_node(&self) -> Option<DrmNode> { |
| 58 | self.drm().map(|d| d.render_node) |
| 59 | } |
| 60 | |
| 61 | pub fn syncobj_mut(&mut self) -> Option<&mut DrmSyncobjState> { |
| 62 | self.drm_mut()?.syncobj.as_mut() |
| 63 | } |
| 64 | } |