Tweaked the screenshot converter.

platformio/src/config.h

@@ -8,6 +8,8 @@ namespace config {
 
 // FLAGS ARE FOR DEBUGGING ONLY. Turn off for official releases.
 
+// TODO: convert kEnableScreenshots and kEnableDebugEvents to a single enum.
+
 // For developers only. When enabled, clicking on a
 // screen's title field pauses the program and sends a screen
 // dump over the USB/serial connection.

tools/screenshot_converter.py

@@ -22,13 +22,13 @@ image_count = 0
 
 image = None
 
-# Returns filename.
+# Returns the filename.
 def init_new_file():
     global image_count, image
     image_count = image_count + 1
     image = Image.new(mode="RGB", size=(480, 320), color="red")
     return "%d%02d%02d-%02d%02d%02d-%02d.png" % (dateTimeObj.year, dateTimeObj.month,  dateTimeObj.day, dateTimeObj.hour,
-                                      dateTimeObj.minute, dateTimeObj.second,image_count)
+                                                 dateTimeObj.minute, dateTimeObj.second, image_count)
 
 
 # Set one pixel in the image.
@@ -50,7 +50,9 @@ def put_pixel(x, y, color):
     b = color & 0xff  # B 8 bits
 
     # Images are kind of dark so making this brighter.
+    #k = 1.5
     k = 2.0
+    #k = 1.0
 
     r = min(255, int(r * k))
     g = min(255, int(g * k))
@@ -104,7 +106,14 @@ def process_next_image():
         process_data_line(l, line)
         l += 1
 
+    hist = image.histogram()
+    print()
+    for i in range(256):
+        print("%02x %5d %5d %5d" % (i, hist[i], hist[256+i], hist[512 + i]))
+    print()
+
     image.save(filename)
+    print("Saved image", filename)
 
 # Increment l to the index of data line past the BEGIN line.
 while l < len(lines):
@@ -112,6 +121,4 @@ while l < len(lines):
 if image_count < 1:
     print("\nError: no image found")
 else:
-  print("\nAll done, found %d images." % image_count)
-
-  
+    print("\nAll done, found %d images.\n" % image_count)