Migrate Kandinsky to C++

Change-Id: I2752a8db84ad0bb817119cf6c2993c1622621150

kandinsky/src/framebuffer.cpp

@@ -0,0 +1,46 @@
+#include <kandinsky/framebuffer.h>
+#include <string.h>
+
+KDFrameBuffer::KDFrameBuffer(KDColor * pixels, KDSize size) :
+  m_pixels(pixels),
+  m_size(size)
+{
+}
+
+KDRect KDFrameBuffer::bounds() {
+  return KDRect(KDPointZero, m_size);
+}
+
+KDColor * KDFrameBuffer::pixelAddress(KDPoint p) const {
+    return m_pixels + p.x() + p.y()*m_size.width();
+}
+
+void KDFrameBuffer::pushRect(KDRect rect, const KDColor * pixels) {
+  const KDColor * line = pixels;
+  for (KDCoordinate j=0; j<rect.height(); j++) {
+    KDPoint lineOffset = KDPoint(0, j);
+    memcpy(pixelAddress(rect.origin().translatedBy(lineOffset)),
+        line,
+        rect.width()*sizeof(KDColor));
+    line += rect.width();
+  }
+}
+
+void KDFrameBuffer::pushRectUniform(KDRect rect, KDColor color) {
+  for (KDCoordinate i=0; i<rect.width(); i++) {
+    for (KDCoordinate j=0; j<rect.height(); j++) {
+      *pixelAddress(rect.origin().translatedBy(KDPoint(i,j))) = color;
+    }
+  }
+}
+
+void KDFrameBuffer::pullRect(KDRect rect, KDColor * pixels) {
+  KDColor * line = pixels;
+  for (KDCoordinate j=0; j<rect.height(); j++) {
+    KDPoint lineOffset = KDPoint(0, j);
+    memcpy(line,
+        pixelAddress(rect.origin().translatedBy(lineOffset)),
+        rect.width()*sizeof(KDColor));
+    line += rect.width();
+  }
+}