abi.proto

syntax = "proto3";

package abi;

// ImageSpec is an ordered array，The server processes according to the order spec
message ImageSpec { repeated Spec specs = 1; }

// process image resize
message Resize {
  uint32 width = 1;
  uint32 height = 2;

  enum ResizeType {
    NORMAL = 0;
    SEAM_CARVE = 1;
  }

  ResizeType rtype = 3;

  enum SampleFilter {
    UNDEFINED = 0;
    NEAREST = 1;
    TRIANGLE = 2;
    CATMULL_ROM = 3;
    GAUSSIAN = 4;
    LANCZOS3 = 5;
  }

  SampleFilter filter = 4;
}

// process image crop
message Crop {
  uint32 x1 = 1;
  uint32 y1 = 2;
  uint32 x2 = 3;
  uint32 y2 = 4;
}

// process fliph
message Fliph {}

// process flipv
message Flipv {}

// process contrast
message Contrast { float contrast = 1; }

// process filter
message Filter {
  enum Filter {
    UNSPECIFIED = 0;
    OCEANIC = 1;
    ISLANDS = 2;
    MARINE = 3;
    // more: https://docs.rs/photon-rs/0.3.1/photon_rs/filters/fn.filter.html
  }
  Filter filter = 1;
}

// process watermark
message Watermark {
  uint32 x = 1;
  uint32 y = 2;
}

// a spec can include one of the processing methods mentioned above.
message Spec {
  oneof data {
    Resize resize = 1;
    Crop crop = 2;
    Flipv flipv = 3;
    Fliph fliph = 4;
    Contrast contrast = 5;
    Filter filter = 6;
    Watermark watermark = 7;
  }
}