Crate cros_libva

Implements a lightweight and safe interface over libva.

The starting point to using this crate is to open a Display, from which a Context and Surfaces can be allocated and used for doing actual work.

Re-exports

• pub use buffer::*;

Modules

• VAConfigAttribType
• VAEntrypoint
• VAProfile
• VASurfaceAttribType
• VASurfaceStatus
• buffer
  Wrappers and helpers around VABuffers.
• constants

Structs

• Config
  A configuration for a given Display.
• Context
  A VA context for a particular Display.
• Display
  A VADisplay opened over DRM.
• DrmDeviceIterator
  Iterates over existing DRM devices.
• DrmPrimeSurfaceDescriptor
  Safe wrapper around VADRMPRIMESurfaceDescriptor.
• DrmPrimeSurfaceDescriptorLayer
  Safe wrapper for the layers member of VADRMPRIMESurfaceDescriptor.
• DrmPrimeSurfaceDescriptorObject
  Safe wrapper for the object member of VADRMPRIMESurfaceDescriptor.
• Image
  Wrapper around VAImage that is tied to the lifetime of a given Picture.
• Picture
  A Surface that is being rendered into.
• Surface
  An owned VA surface that is tied to a particular Display.
• SurfaceDecodeMBError
  Decode error details extracted from VASurfaceDecodeMBErrors, result of vaQuerySurfaceError.
• UsageHint
  Gives the driver a hint of intended usage to optimize allocation (e.g. tiling).
• VADRMPRIMESurfaceDescriptorLayer
• VADRMPRIMESurfaceDescriptorObject
• VaError
  A VAStatus that is guaranteed to not be VA_STATUS_SUCCESS.

Enums

• DecodeErrorType
  Decode error type aka VADecodeErrorType
• GenericValue
  A wrapper over VAGenericValue giving us safe access to the underlying union members.
• GenericValueError
• MemoryType
  VA memory types, aka VA_SURFACE_ATTRIB_MEM_TYPE_*.
• OpenDrmDisplayError
  Error type for Display::open_drm_display.
• PictureBegin
  Represents a Picture after vaBeginPicture has been called.
• PictureEnd
  Represents a Picture after vaEndPicture has been called.
• PictureNew
  Represents a Picture that has just been created.
• PictureRender
  Represents a Picture after vaRenderPicture has been called.
• PictureSync
  Represents a Picture after vaSyncSurface has been called on the underlying surface.
• QuerySurfaceAttributesError

Traits

• ExternalBufferDescriptor
  Trait allowing to import an external memory source to use with a surface by setting the VASurfaceAttribMemoryType and VASurfaceAttribExternalBuffers attributes.
• PictureReclaimableSurface
  Represents a state where one can reclaim the underlying Surface for this Picture. This is true when either no decoding has been initiated or, alternatively, when the decoding operation has completed for the underlying vaSurface
• PictureState
  A Picture will only have valid YUV data after a sequence of operations are performed in a particular order. This order correspond to the following VA-API calls: vaBeginPicture, vaRenderPicture, vaEndPicture and vaSyncSurface. This trait enforces this ordering by implementing the Typestate pattern to constrain what operations are available in what particular states.
• SurfaceExternalDescriptor
  Trait for types that can be used as a VASurfaceAttribExternalBufferDescriptor.
• SurfaceMemoryDescriptor
  Trait describing a memory backing for surfaces.

Type Aliases

• VAConfigAttrib
• VADRMPRIMESurfaceDescriptor
• VAImageFormat
• VASurfaceAttrib
• VASurfaceAttribExternalBuffers
• VASurfaceID