Method StbResize

tests/InferenceTestImage.cpp:183–207

void InferenceTestImage::StbResize(InferenceTestImage& im, const unsigned int newWidth, const unsigned int newHeight)
{
    std::vector<uint8_t> newData;
    newData.resize(newWidth * newHeight * im.GetNumChannels() * im.GetSingleElementSizeInBytes());

    // armnn::numeric_cast<>() is used for user-provided data (protecting about overflows).
    // static_cast<> is ok for internal data (assumes that, when internal data was originally provided by a user,
    // a armnn::numeric_cast<>() handled the conversion).
    const int nW = armnn::numeric_cast<int>(newWidth);
    const int nH = armnn::numeric_cast<int>(newHeight);

    const int w = static_cast<int>(im.GetWidth());
    const int h = static_cast<int>(im.GetHeight());
    const int numChannels = static_cast<int>(im.GetNumChannels());

    const int res = stbir_resize_uint8(im.m_Data.data(), w, h, 0, newData.data(), nW, nH, 0, numChannels);
    if (res == 0)
    {
        throw InferenceTestImageResizeFailed("The resizing operation failed");
    }

    im.m_Data.swap(newData);
    im.m_Width = newWidth;
    im.m_Height = newHeight;
}

std::vector<float> InferenceTestImage::Resize(unsigned int newWidth,
                                              unsigned int newHeight,