start work on nihed-cros-libva

[nihav-player.git] / nihed-cros-libva / src / usage_hint.rs

diff --git a/nihed-cros-libva/src/usage_hint.rs b/nihed-cros-libva/src/usage_hint.rs
new file mode 100644 (file)
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+++ b/nihed-cros-libva/src/usage_hint.rs
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+// Copyright 2022 The ChromiumOS Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+use bitflags::bitflags;
+
+use crate::constants;
+
+bitflags! {
+    /// Gives the driver a hint of intended usage to optimize allocation (e.g. tiling).
+    pub struct UsageHint: u32 {
+        /// Surface usage not indicated.
+        const USAGE_HINT_GENERIC = constants::VA_SURFACE_ATTRIB_USAGE_HINT_GENERIC;
+        /// Surface used by video decoder.
+        const USAGE_HINT_DECODER = constants::VA_SURFACE_ATTRIB_USAGE_HINT_DECODER;
+        /// Surface used by video encoder.
+        const USAGE_HINT_ENCODER = constants::VA_SURFACE_ATTRIB_USAGE_HINT_ENCODER;
+        /// Surface read by video post-processing.
+        const USAGE_HINT_VPP_READ = constants::VA_SURFACE_ATTRIB_USAGE_HINT_VPP_READ;
+        /// Surface written by video post-processing.
+        const USAGE_HINT_VPP_WRITE = constants::VA_SURFACE_ATTRIB_USAGE_HINT_VPP_WRITE;
+        /// Surface used for display.
+        const USAGE_HINT_DISPLAY = constants::VA_SURFACE_ATTRIB_USAGE_HINT_DISPLAY;
+        /// Surface used for export to third-party APIs, e.g. via `vaExportSurfaceHandle()`.
+        const USAGE_HINT_EXPORT = constants::VA_SURFACE_ATTRIB_USAGE_HINT_EXPORT;
+    }
+}