Function PushImageData

src/lua/LuaCallOuts.cpp:995–1019

static int PushImageData(lua_State* L, PNGImageFile& image) {
  if (!image.isOpen()) {
    return luaL_pushnil(L);
  }

  const int width = image.getWidth();
  const int height = image.getHeight();
  const int channels = image.getNumChannels();

  const int bufSize = width * height * channels;
  char* buf = new char[bufSize];
  if (!image.read(buf)) {
    delete[] buf;
    return luaL_pushnil(L);
  }

  lua_pushinteger(L, width);
  lua_pushinteger(L, height);
  lua_pushinteger(L, channels);
  lua_pushlstring(L, buf, bufSize);

  delete[] buf;

  return 4;
}


int LuaCallOuts::ReadImageData(lua_State* L) {