// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

edition = "2023";

option optimize_for = LITE_RUNTIME;

package lens;

// Phase latency metadata for the Lens Overlay.
message LensOverlayPhaseLatenciesMetadata {
  enum ImageType {
    option features.enum_type = CLOSED;

    UNKNOWN = 0;
    JPEG = 1;
    PNG = 2;
    WEBP = 3;
  }

  // Represents a single point in time during the image preprocessing flow.
  message Phase {
    reserved 1, 2;

    // Data specific for each PhaseType. These should only be populated for
    // "_END" PhaseTypes.
    oneof phase_data {
      // Data specifically only relevant for IMAGE_DOWNSCALE_END PhaseType.
      ImageDownscaleData image_downscale_data = 3;

      // Data specifically only relevant for IMAGE_ENCODE_END PhaseType.
      ImageEncodeData image_encode_data = 4;
    }

    message ImageDownscaleData {
      // The size of the original image, in pixels.
      int64 original_image_size = 1;

      // The size of the downscaled image, in pixels.
      int64 downscaled_image_size = 2;
    }

    message ImageEncodeData {
      // The type of the original Image. This only applies to IMAGE_ENCODE_END
      // PhaseTypes
      ImageType original_image_type = 1;

      // The bytes size of the encoded image.
      int64 encoded_image_size_bytes = 2;
    }
  }

  repeated Phase phase = 1;
}