--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Applications/StoneWebViewer/WebAssembly/DeepLearningWorker.proto	Tue Apr 18 10:53:09 2023 +0200
@@ -0,0 +1,61 @@
+syntax = "proto2";
+option optimize_for = LITE_RUNTIME;
+
+package OrthancStone.Messages;
+
+enum RequestType {
+  PARSE_MODEL = 1;
+  LOAD_IMAGE = 2;
+  EXECUTE_STEP = 3;
+}
+
+enum ResponseType {
+  INITIALIZED = 1;
+  PARSED_MODEL = 2;
+  LOADED_IMAGE = 3;
+  STEP_DONE = 4;
+}
+
+message ParseModelRequest {
+  required bytes content = 1;
+}
+
+message ParseModelResponse {
+  required uint32 number_of_steps = 1;
+}
+
+message LoadImageRequest {
+  required string sop_instance_uid = 1;
+  required uint32 frame_number = 2;
+  required uint32 height = 3;
+  required uint32 width = 4;
+  repeated float values = 5 [packed=true];
+}
+
+message SegmentationMask {
+  required string sop_instance_uid = 1;
+  required uint32 frame_number = 2;
+  required uint32 height = 3;
+  required uint32 width = 4;
+  repeated bool values = 5 [packed=true];
+}
+
+message StepResponse {
+  required bool done = 1;
+  required float progress = 2;
+  optional SegmentationMask mask = 3;
+}
+
+message Request {
+  required RequestType type = 1;
+
+  optional ParseModelRequest parse_model = 2;
+  optional LoadImageRequest load_image = 3;
+}
+
+message Response {
+  required ResponseType type = 1;
+
+  optional ParseModelResponse parse_model = 2;
+  optional StepResponse step = 3;
+}