void Framebuffer565::update(TFT *tft, int16_t x0, int16_t y0) {
tft->openWindow(x0, y0, _width, _height);
uint16_t buf[_width];
for (uint32_t y = 0; y < _height; y++) {
getScanLine(y, 0, _width, buf);
tft->windowData(buf, _width);
}
tft->closeWindow();
}
decltype(auto) save_image_vector_as_image(Iter first, Iter const& last,
int width, boost::filesystem::path const& filepath, scalar ratio) {
auto image = fipImage{FIT_BITMAP,
static_cast<unsigned int>(width), static_cast<unsigned int>(width), 32};
// coordinate system of freeimage is upside down.
for(auto y = static_cast<int>(width)-1; y >= 0; --y) {
BYTE* row = image.getScanLine(y);
for(auto x = 0; x < width; ++x) {
assert(first != last);
*(row+x*4) = *(row+x*4+1) = *(row+x*4+2) = ratio*(*first);
++first;
}
}
image.save(filepath.string().c_str());
assert(first == last);
}
decltype(auto) save_3ch_image_vector_as_rgb_image(Iter first, Iter const& last,
int width, boost::filesystem::path const& filepath, scalar ratio) {
constexpr auto channel_num = 3u;
NEU_ASSERT(std::distance(first, last) == static_cast<decltype(std::distance(first, last))>(width*width*channel_num));
auto image = fipImage{FIT_BITMAP,
static_cast<unsigned int>(width), static_cast<unsigned int>(width), 32};
// coordinate system of freeimage is upside down.
for(auto y = static_cast<int>(width)-1; y >= 0; --y) {
BYTE* row = image.getScanLine(y);
for(auto x = 0; x < width; ++x) {
NEU_ASSERT(first != last);
*(row+x*4+0) = ratio*(*(first+0*width*width));
*(row+x*4+1) = ratio*(*(first+1*width*width));
*(row+x*4+2) = ratio*(*(first+2*width*width));
++first;
}
}
image.save(filepath.string().c_str());
}
void Framebuffer::getScanLine(uint16_t y, uint16_t *data) {
getScanLine(y, 0, getWidth(), data);
}
