fix(ResampleLabelImage): pass pipeline worker to runPipeline

Avoids trying to load pipeline.worker.js from
Blob:http://localhost...

Rename Resample to ResampleLabelImage

src/IO/ResampleLabelImage/.gitignore

@@ -0,0 +1,4 @@
+/web-build/*
+!web-build/ResampleLabelImage.js
+!web-build/ResampleLabelImage.wasm
+resample.png

src/IO/Resample/CMakeLists.txt → src/IO/ResampleLabelImage/CMakeLists.txt

@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.16)
-project(Resample)
+project(ResampleLabelImage)
 
 set(CMAKE_CXX_STANDARD 17)
 
@@ -21,6 +21,6 @@ find_package(ITK REQUIRED
   )
 include(${ITK_USE_FILE})
 
-add_executable(Resample Resample.cxx)
-target_link_libraries(Resample PUBLIC ${ITK_LIBRARIES})
+add_executable(ResampleLabelImage ResampleLabelImage.cxx)
+target_link_libraries(ResampleLabelImage PUBLIC ${ITK_LIBRARIES})
 

src/IO/Resample/Resample.cxx → src/IO/ResampleLabelImage/ResampleLabelImage.cxx

@@ -144,7 +144,7 @@ class PipelineFunctor
 
 int main(int argc, char *argv[])
 {
-  itk::wasm::Pipeline pipeline("Resample", "Resample a label image", argc, argv);
+  itk::wasm::Pipeline pipeline("ResampleLabelImage", "Resample a label image", argc, argv);
 
   return itk::wasm::SupportInputImageTypes<PipelineFunctor,
                                            uint8_t,
@@ -154,7 +154,5 @@ int main(int argc, char *argv[])
                                            uint32_t,
                                            int32_t,
                                            uint64_t,
-                                           int64_t,
-                                           float,
-                                           double>::Dimensions<2U, 3U>("InputImage", pipeline);
+                                           int64_t>::Dimensions<2U, 3U>("InputImage", pipeline);
 }

src/IO/ResampleLabelImage/ResampleLabelImage.js

@@ -0,0 +1,50 @@
+import {
+  runPipeline,
+  InterfaceTypes,
+  imageSharedBufferOrCopy,
+  //   WorkerPool,
+  //   stackImages,
+} from 'itk-wasm'
+
+import itkConfig from '../itkConfig.js'
+
+async function runWasm(pipeline, args, image) {
+  const taskArgs = ['0', '0', args.join(','), '--memory-io']
+  const inputs = [
+    {
+      type: InterfaceTypes.Image,
+      data: imageSharedBufferOrCopy(image),
+    },
+  ]
+
+  const desiredOutputs = [{ type: InterfaceTypes.Image }]
+
+  const { pipelinesUrl, pipelineWorkerUrl } = itkConfig
+
+  // remove blob:http://... added to __webpack_public_path__ in webworker
+  const pipelinesUrlNoBlob = pipelinesUrl.startsWith('blob:')
+    ? pipelinesUrl.substring(5)
+    : pipelinesUrl
+
+  const pipelinesWorkerUrlNoBlob = pipelineWorkerUrl.startsWith('blob:')
+    ? pipelineWorkerUrl.substring(5)
+    : pipelineWorkerUrl
+
+  const worker = new Worker(pipelinesWorkerUrlNoBlob)
+
+  const { outputs } = await runPipeline(
+    worker,
+    pipeline,
+    taskArgs,
+    desiredOutputs,
+    inputs,
+    pipelinesUrlNoBlob
+  )
+  worker.terminate()
+
+  return outputs[0].data
+}
+
+export async function resampleLabelImage(size, image) {
+  return runWasm('Resample', size, image)
+}

src/IO/Resample/index.mjs → src/IO/ResampleLabelImage/index.mjs

@@ -25,7 +25,7 @@ if (program.args.length < 2) {
 
 const inputFile = program.args[0]
 const outputFile = program.args[1]
-const pipelinePath = path.resolve('./web-build/Resample')
+const pipelinePath = path.resolve('./web-build/ResampleLabelImage')
 
 const size = [100, 100]