Vanity-Screen.

[hackover2013-badge-firmware.git] / vanity / vanity-convert.cc

diff --git a/vanity/vanity-convert.cc b/vanity/vanity-convert.cc
new file mode 100644 (file)
index 0000000..e08b77f
--- /dev/null
+++ b/vanity/vanity-convert.cc
@@ -0,0 +1,49 @@
+#include <SFML/Graphics/Image.hpp>
+
+#include <cmath>
+#include <fstream>
+#include <iostream>
+#include <numeric>
+
+#include <badge/ui/display.h>
+
+double square(double x) { return x * x; }
+
+int main(int argc, char *argv[]) {
+  if(argc != 2) {
+    std::cerr << "Usage: " << argv[0] << " [ FILE ]\n";
+    return -1;
+  }
+
+  sf::Image img;
+  if(!img.loadFromFile(argv[1])) {
+    std::cerr << "Could not open file.\n";
+    return -2;
+  }
+
+  if(img.getSize().x != BADGE_DISPLAY_WIDTH ||
+     img.getSize().y != BADGE_DISPLAY_HEIGHT) {
+    std::cerr << "Image must be " << BADGE_DISPLAY_WIDTH << "x" << BADGE_DISPLAY_HEIGHT << " pixels.\n";
+    return -3;
+  }
+
+  badge_framebuffer fb = { { { 0 } } };
+
+  for(unsigned x = 0; x < BADGE_DISPLAY_WIDTH; ++x) {
+    for(unsigned y = 0; y < BADGE_DISPLAY_HEIGHT; ++y) {
+      sf::Color c = img.getPixel(x, y);
+
+      if(std::sqrt(0.241 * square(c.r / 255.) + 0.691 * square(c.g / 255.) + 0.068 * square(c.b / 255.)) < 0.5) {
+        badge_framebuffer_pixel_on(&fb, x, y);
+      }
+    }
+  }
+
+  std::ofstream out("vanity.dat", std::ios::out | std::ios::binary);
+
+  if(out) {
+    out.write(static_cast<char const *>(static_cast<void const *>(&fb)), sizeof(fb));
+  }
+
+  return 0;
+}