57 lines
1.3 KiB
Rust
57 lines
1.3 KiB
Rust
use {
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crate::{
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format::Format,
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video::{
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Modifier,
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dmabuf::{DmaBuf, DmaBufIds},
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drm::Drm,
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},
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},
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std::{error::Error, rc::Rc},
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thiserror::Error,
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};
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#[derive(Debug, Error)]
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#[error(transparent)]
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pub struct AllocatorError(#[from] pub Box<dyn Error + Send>);
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bitflags! {
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BufferUsage: u32;
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BO_USE_SCANOUT,
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BO_USE_CURSOR,
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BO_USE_RENDERING,
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BO_USE_WRITE,
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BO_USE_LINEAR,
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BO_USE_PROTECTED,
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}
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pub trait Allocator {
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fn drm(&self) -> Option<&Drm>;
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fn create_bo(
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&self,
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dma_buf_ids: &DmaBufIds,
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width: i32,
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height: i32,
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format: &'static Format,
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modifiers: &[Modifier],
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usage: BufferUsage,
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) -> Result<Rc<dyn BufferObject>, AllocatorError>;
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fn import_dmabuf(
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&self,
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dmabuf: &DmaBuf,
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usage: BufferUsage,
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) -> Result<Rc<dyn BufferObject>, AllocatorError>;
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}
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pub trait BufferObject {
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fn dmabuf(&self) -> &DmaBuf;
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fn map_read(self: Rc<Self>) -> Result<Box<dyn MappedBuffer>, AllocatorError>;
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fn map_write(self: Rc<Self>) -> Result<Box<dyn MappedBuffer>, AllocatorError>;
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}
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pub trait MappedBuffer {
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unsafe fn data(&self) -> &[u8];
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#[cfg_attr(not(feature = "it"), expect(dead_code))]
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fn data_ptr(&self) -> *mut u8;
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fn stride(&self) -> i32;
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}
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