/*
 * Copyright (C) 2020 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

syntax = "proto2";

package perfetto.protos;

import "protos/perfetto/common/descriptor.proto";

// This message contains descriptors used to parse extension fields of
// TrackEvent.
//
// See docs/instrumentation/extensions.md for more details.
message ExtensionDescriptor {
  oneof descriptor {
    FileDescriptorSet extension_set = 1;

    // Same as extension_set, but gzip-compressed. This is used by the tracing
    // service on Android to emit pre-compressed descriptor files from
    // /etc/tracing_descriptors.gz without decompressing them first.
    bytes extension_set_gzip = 2;
  }

  // Optional, for debugging only. The file name or path of the descriptor
  // source. Can be omitted without affecting functionality.
  optional string file_name = 3;
}
