syntax = "proto2";

package mediapipe;

option java_package = "com.google.mediapipe.proto";
option java_outer_classname = "FieldDescriptorProtoProto";

// Describes a field within a message.
message FieldDescriptorProto {
  enum Type {
    // 0 is reserved for errors.
    TYPE_INVALID = 0;
    // Order is weird for historical reasons.
    TYPE_DOUBLE = 1;
    TYPE_FLOAT = 2;
    // Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT64 if
    // negative values are likely.
    TYPE_INT64 = 3;
    TYPE_UINT64 = 4;
    // Not ZigZag encoded.  Negative numbers take 10 bytes.  Use TYPE_SINT32 if
    // negative values are likely.
    TYPE_INT32 = 5;
    TYPE_FIXED64 = 6;
    TYPE_FIXED32 = 7;
    TYPE_BOOL = 8;
    TYPE_STRING = 9;
    // Tag-delimited aggregate.
    // Group type is deprecated and not supported in proto3. However, Proto3
    // implementations should still be able to parse the group wire format and
    // treat group fields as unknown fields.
    TYPE_GROUP = 10;
    TYPE_MESSAGE = 11;  // Length-delimited aggregate.

    // New in version 2.
    TYPE_BYTES = 12;
    TYPE_UINT32 = 13;
    TYPE_ENUM = 14;
    TYPE_SFIXED32 = 15;
    TYPE_SFIXED64 = 16;
    TYPE_SINT32 = 17;  // Uses ZigZag encoding.
    TYPE_SINT64 = 18;  // Uses ZigZag encoding.
  }
}
