| // Copyright 2023 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| library fuchsia.hardware.display; |
| |
| /// Type of the internal value in [`fuchsia.hardware.display/BufferCollectionId`]. |
| alias BufferCollectionIdValue = uint64; |
| |
| /// Identifies a sysmem BufferCollection owned by a Display Coordinator client. |
| /// |
| /// Values are managed by [`fuchsia.hardware.display/Coordinator`] clients, to |
| /// facilitate feed-forward dataflow. |
| /// |
| /// Each value uniquely identifies a [`fuchsia.sysmem/BufferCollection`] (as |
| /// well as its token [`fuchsia.sysmem/BufferCollectionToken`]) imported to the |
| /// Display Coordinator device within a Coordinator connection. The identifier |
| /// of a BufferCollection destroyed via |
| /// [`fuchsia.hardware.display/Coordinator.ReleaseBufferCollection`] can be |
| /// reused in a subsequent |
| /// [`fuchsia.hardware.display/Coordinator.ImportBufferCollection`] call. |
| type BufferCollectionId = struct { |
| value BufferCollectionIdValue; |
| }; |
