// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

syntax = "proto2";

package viz.fuzzing.layer_context.proto;

import "services/viz/public/mojom/compositing/layer_context.mojom.mojolpm.proto";
import "services/viz/public/mojom/compositing/tiling.mojom.mojolpm.proto";

// Run the specific sequence for (an indeterminate) period.
message RunThreadAction {
  enum ThreadId {
    IO = 0;
    UI = 1;
  }

  required ThreadId id = 1;
}

message Action {
  oneof action {
    RunThreadAction run_thread = 1;
    mojolpm.viz.mojom.LayerTreeUpdate update_display_tree = 2;
    mojolpm.viz.mojom.Tiling update_display_tiling = 3;
  }
}

// Sequence provides a level of indirection which allows Testcase to compactly
// express repeated sequences of actions.
message Sequence {
  repeated uint32 action_indexes = 1 [packed = true];
}

// Testcase is the top-level message type interpreted by the fuzzer.
message Testcase {
  repeated Action actions = 1;
  repeated Sequence sequences = 2;
  repeated uint32 sequence_indexes = 3 [packed = true];
}