Files
server/src/wayland/dmabuf/mod.rs
2025-07-05 19:51:40 -07:00

109 lines
2.9 KiB
Rust

pub mod buffer_backing;
pub mod buffer_params;
pub mod feedback;
use buffer_params::BufferParams;
use drm_fourcc::DrmFourcc;
use feedback::DmabufFeedback;
use waynest::{
server::{
Client, Dispatcher, Result,
protocol::stable::linux_dmabuf_v1::zwp_linux_dmabuf_v1::ZwpLinuxDmabufV1,
},
wire::ObjectId,
};
use crate::core::registry::Registry;
/// Main DMA-BUF interface implementation
///
/// This interface allows clients to create wl_buffers from DMA-BUFs.
/// It handles:
/// - Format/modifier advertisement
/// - Buffer parameter creation
/// - Default/surface-specific feedback
///
/// The implementation ensures:
/// - Coherency for read access in dmabuf data
/// - Proper lifetime management of dmabuf file descriptors
/// - Safe handling of buffer attachments
#[derive(Dispatcher)]
pub struct Dmabuf {
// Track supported formats and modifiers
// formats: Mutex<FxHashSet<DrmFormat>>,
// Track active buffer parameters objects by their ID
active_params: Registry<BufferParams>,
}
impl Dmabuf {
/// Create a new DMA-BUF interface instance
pub fn new() -> Self {
// let mut formats = FxHashSet::default();
Self {
// formats: Mutex::new(formats),
active_params: Registry::new(),
}
}
pub async fn send_modifiers(&self, client: &mut Client, sender_id: ObjectId) -> Result<()> {
let format = DrmFourcc::Xrgb8888 as u32;
let modifier_hi = 0u32; // Linear modifier high 32 bits
let modifier_lo = 0u32; // Linear modifier low 32 bits
self.modifier(client, sender_id, format, modifier_hi, modifier_lo)
.await?;
Ok(())
}
/// Remove a buffer parameters object from tracking
pub(crate) fn remove_params(&self, params_id: ObjectId) {
self.active_params.retain(|params| params.id != params_id);
}
}
impl ZwpLinuxDmabufV1 for Dmabuf {
async fn destroy(&self, _client: &mut Client, sender_id: ObjectId) -> Result<()> {
self.remove_params(sender_id);
Ok(())
}
async fn create_params(
&self,
client: &mut Client,
_sender_id: ObjectId,
params_id: ObjectId,
) -> Result<()> {
// Create new buffer parameters object
let params = client.insert(params_id, BufferParams::new(params_id));
self.active_params.add_raw(&params);
Ok(())
}
async fn get_default_feedback(
&self,
client: &mut Client,
_sender_id: ObjectId,
id: ObjectId,
) -> Result<()> {
// Create feedback object for default (non-surface-specific) settings
let feedback = client.insert(id, DmabufFeedback);
feedback.send_params(client, id).await?;
Ok(())
}
async fn get_surface_feedback(
&self,
client: &mut Client,
_sender_id: ObjectId,
id: ObjectId,
_surface: ObjectId,
) -> Result<()> {
// Create feedback object for surface-specific settings
// Note: Surface-specific feedback could be optimized based on the surface's
// requirements, but for now we use the same feedback as default
let feedback = client.insert(id, DmabufFeedback);
feedback.send_params(client, id).await?;
Ok(())
}
}