nihed-cros-libva/src/usage_hint.rs

   1 // Copyright 2022 The ChromiumOS Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 use bitflags::bitflags;
   6
   7 use crate::constants;
   8
   9 bitflags! {
  10     /// Gives the driver a hint of intended usage to optimize allocation (e.g. tiling).
  11     pub struct UsageHint: u32 {
  12         /// Surface usage not indicated.
  13         const USAGE_HINT_GENERIC = constants::VA_SURFACE_ATTRIB_USAGE_HINT_GENERIC;
  14         /// Surface used by video decoder.
  15         const USAGE_HINT_DECODER = constants::VA_SURFACE_ATTRIB_USAGE_HINT_DECODER;
  16         /// Surface used by video encoder.
  17         const USAGE_HINT_ENCODER = constants::VA_SURFACE_ATTRIB_USAGE_HINT_ENCODER;
  18         /// Surface read by video post-processing.
  19         const USAGE_HINT_VPP_READ = constants::VA_SURFACE_ATTRIB_USAGE_HINT_VPP_READ;
  20         /// Surface written by video post-processing.
  21         const USAGE_HINT_VPP_WRITE = constants::VA_SURFACE_ATTRIB_USAGE_HINT_VPP_WRITE;
  22         /// Surface used for display.
  23         const USAGE_HINT_DISPLAY = constants::VA_SURFACE_ATTRIB_USAGE_HINT_DISPLAY;
  24         /// Surface used for export to third-party APIs, e.g. via `vaExportSurfaceHandle()`.
  25         const USAGE_HINT_EXPORT = constants::VA_SURFACE_ATTRIB_USAGE_HINT_EXPORT;
  26     }
  27 }