Adding the Quite OK Image (QOI) Codec (#1384)

codecs/qoi/enc/qoi_enc.cpp

@@ -0,0 +1,36 @@
+#include <emscripten/bind.h>
+#include <emscripten/val.h>
+
+#define QOI_IMPLEMENTATION
+#include "qoi.h"
+
+using namespace emscripten;
+
+struct QoiOptions {};
+
+thread_local const val Uint8Array = val::global("Uint8Array");
+
+val encode(std::string buffer, int width, int height, QoiOptions options) {
+  int compressedSizeInBytes;
+  qoi_desc desc;
+  desc.width = width;
+  desc.height = height;
+  desc.channels = 4;
+  desc.colorspace = QOI_SRGB;
+
+  uint8_t* encodedData = (uint8_t*)qoi_encode(buffer.c_str(), &desc, &compressedSizeInBytes);
+  if (encodedData == NULL)
+    return val::null();
+
+  auto js_result =
+      Uint8Array.new_(typed_memory_view(compressedSizeInBytes, (const uint8_t*)encodedData));
+  free(encodedData);
+
+  return js_result;
+}
+
+EMSCRIPTEN_BINDINGS(my_module) {
+  value_object<QoiOptions>("QoiOptions");
+
+  function("encode", &encode);
+}