Method Load

src/common/Misc/WICLoader.cpp:39–134

}

bool WICLoader::Load(const char *pFilename, float cutOff, IMG_INFO *pInfo)
{
#ifdef USE_WIC
    HRESULT hr = S_OK;

    if (m_pWICFactory == NULL)
    {
        hr = CoInitialize(NULL);
        assert(SUCCEEDED(hr));
        hr = CoCreateInstance(CLSID_WICImagingFactory, nullptr,CLSCTX_INPROC_SERVER, IID_PPV_ARGS(&m_pWICFactory));
        assert(SUCCEEDED(hr));
    }

    IWICStream* pWicStream;
    hr = m_pWICFactory->CreateStream(&pWicStream);
    assert(SUCCEEDED(hr));

    wchar_t  uniName[1024];
    swprintf(uniName, 1024, L"%S", pFilename);
    hr = pWicStream->InitializeFromFilename(uniName, GENERIC_READ);
    //assert(hr == S_OK);
    if (FAILED(hr))
        return false;

    IWICBitmapDecoder *pBitmapDecoder;
    hr = m_pWICFactory->CreateDecoderFromStream(pWicStream, NULL, WICDecodeMetadataCacheOnDemand, &pBitmapDecoder);
    assert(SUCCEEDED(hr));

    IWICBitmapFrameDecode *pFrameDecode;
    hr = pBitmapDecoder->GetFrame(0, &pFrameDecode);
    assert(SUCCEEDED(hr));

    IWICFormatConverter *pIFormatConverter;
    hr = m_pWICFactory->CreateFormatConverter(&pIFormatConverter);
    assert(SUCCEEDED(hr));

    hr = pIFormatConverter->Initialize( pFrameDecode, GUID_WICPixelFormat32bppRGBA, WICBitmapDitherTypeNone, NULL, 100.0, WICBitmapPaletteTypeCustom);
    assert(SUCCEEDED(hr));

    uint32_t width, height;
    pFrameDecode->GetSize(&width, &height);
    pFrameDecode->Release();

    int bufferSize = width * height * 4;
    m_pData = (char *)malloc(bufferSize);
    hr = pIFormatConverter->CopyPixels( NULL, width * 4, bufferSize, (BYTE*)m_pData);
    assert(SUCCEEDED(hr));
#else
    int32_t width, height, channels;
    m_pData = (char*)stbi_load(pFilename, &width, &height, &channels, STBI_rgb_alpha);
#endif

    // no data, no success.
    if (!m_pData) return false;

    // compute number of mips
    //
    uint32_t mipWidth  = width;