From 2e741c7993698b24c250a30f73ca383f08873240 Mon Sep 17 00:00:00 2001
From: Phil Howard <phil@gadgetoid.com>
Date: Thu, 24 Feb 2022 09:23:52 +0000
Subject: [PATCH] Badger2040: Add binary support to image converter.

---
 .../badger2040/image_converter/convert.py     | 63 ++++++++-----------
 1 file changed, 26 insertions(+), 37 deletions(-)

diff --git a/examples/badger2040/image_converter/convert.py b/examples/badger2040/image_converter/convert.py
index 6023b788..21e1b92c 100755
--- a/examples/badger2040/image_converter/convert.py
+++ b/examples/badger2040/image_converter/convert.py
@@ -5,60 +5,49 @@
 # and reducing to black and white with dither. the data is then output as an
 # array that can be embedded directly into your c++ code
 
-import argparse, sys, os, glob
+import argparse
+import sys
 from PIL import Image, ImageEnhance
 from pathlib import Path
 
-parser = argparse.ArgumentParser(
-  description='Converts images into the format used by Badger2040.')
+parser = argparse.ArgumentParser(description='Converts images into the format used by Badger2040.')
 parser.add_argument('file', nargs="+", help='input files to convert')
+parser.add_argument('--binary', action="store_true", help='output binary file for MicroPython')
+
+options = parser.parse_args()
 
-options = None
-try:
-  options = parser.parse_args()
-except:
-  parser.print_help()
-  sys.exit(0)
 
 def convert_image(img):
-  img = img.resize((296, 128)) # resize and crop
-  enhancer = ImageEnhance.Contrast(img)
-  img = enhancer.enhance(2.0)
-  img = img.convert("1") # convert to black and white
-  return img
+    # img = img.resize((296, 128)) # resize and crop
+    enhancer = ImageEnhance.Contrast(img)
+    img = enhancer.enhance(2.0)
+    img = img.convert("1") # convert to black and white
+    return img
 
 
 # create map of images based on input filenames
 for input_filename in options.file:
-  with Image.open(input_filename) as img:
-    img = convert_image(img)
+    with Image.open(input_filename) as img:
+        img = convert_image(img)
 
-    image_name = Path(input_filename).stem
+        image_name = Path(input_filename).stem
 
-    h, w = img.size
+        w, h = img.size
 
-    data = Image.Image.getdata(img)
+        output_data = [~b & 0xff for b in list(img.tobytes())]
 
-    bytes = []
-    byte = 0
-    byte_idx = 0
-    x = 0
-    for v in data:
-      byte <<= 1
-      byte |= 1 if v == 0 else 0
-      byte_idx += 1
-
-      if byte_idx == 8: # next byte...
-        bytes.append(str(byte))
-        byte_idx = 0
-        byte = 0
-
-    image_code = '''\
+        if options.binary:
+            output_filename = input_filename + ".bin"
+            print(f"Saving to {output_filename}")
+            with open(output_filename, "wb") as out:
+                out.write(bytearray(output_data))
+        else:
+            image_code = '''\
 static const uint8_t {image_name}[{count}] = {{
-  {byte_data}
+    {byte_data}
 }};
-  '''.format(image_name=image_name, count=len(bytes), byte_data=", ".join(bytes))
+    '''.format(image_name=image_name, count=len(output_data), byte_data=", ".join(str(b) for b in output_data))
 
-    print(image_code)
+            print(image_code)