Compile JXL decoder

codecs/jxl_dec/jxl_dec.cpp

@@ -0,0 +1,38 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+
+#include "jxl/dec_file.h"
+
+using namespace emscripten;
+
+class RawImage {
+public:
+  val buffer;
+  int width;
+  int height;
+
+  RawImage(val b, int w, int h) : buffer(b), width(w), height(h) {}
+};
+
+val decode(std::string data) {
+  jxl::Span<const uint8_t> compressed((uint8_t *)data.c_str(), data.length());
+  jxl::DecompressParams dparams;
+  // jxl::ThreadPool pool;
+  jxl::CodecInOut io;
+  jxl::AuxOut aux_out;
+
+  if (!DecodeFile(dparams, compressed, &io, &aux_out, NULL)) {
+    printf("FAIL\n");
+  }
+  printf("YAY\n");
+  return val(1);
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  class_<RawImage>("RawImage")
+      .property("buffer", &RawImage::buffer)
+      .property("width", &RawImage::width)
+      .property("height", &RawImage::height);
+
+  function("decode", &decode);
+}