Is there some way to use the "builtin" blp converter alone?

[435352980]

Very nice tool!!!
Is there some useful API in wasm module for converting blp files？
I tried some module, but allways loss quality.

wc3data

other

[d07RiV]

You mean converting blp to png? I'm using libjpeg for conversion, the code is here: https://github.com/d07RiV/wc3data/blob/master/DataGen/image/imageblp.cpp

[435352980]

Yes, thank you!
I'll try it. And it can be compiled to wasm module?
I build them with emscripten like blew but it seems not working.

EM_JS(void, write_output, (void const* ptr, int size), {
  window.postResult(HEAPU8.slice(ptr, ptr + size));
});
extern "C"{
EMSCRIPTEN_KEEPALIVE int convertImage(void const* data_ptr, uint32 data_size,ImageFormat::Type format) {
    File f;
    f = MemoryFile((uint8*)data_ptr, (size_t)data_size);
    Image image;
    image = ImagePrivate::imRead(f,format);

    if (image) {
      MemoryFile file;
      image.write(file);
      write_output(file.data(), file.size());
      return 1;
    }
    return 0;
  }
}

The html code

window.postResult = function(msg) {
  if (msg) {
    const blob = new Blob([msg], { type: 'image/png' });
    document.querySelector('#image').setAttribute('src', URL.createObjectURL(blob));
  } else {
    console.error(msg);
  }
};
setTimeout(() => {
  fetch('./aaa.blp').then(res =>
    res.arrayBuffer().then(data => {
      ImgParser().then(wasm => {
        const array = new Uint8Array(data);
        const addr = wasm._malloc(array.length);
        wasm.HEAPU8.set(array, addr);
        wasm._convertImage(addr, array.length, 3);
        wasm._free(addr);
      });
    })
  );
}, 1000);