python script to convert images to header files

bmp2h.py

@@ -0,0 +1,56 @@
+from PIL import Image
+import sys
+
+
+def get_bytestring(fname):
+    bmp_name = fname.rsplit(".", 1)[0]
+
+    print("""#pragma once
+
+#include <esp-gfx/gfx.h>
+#include <stdint.h>
+
+const uint8_t """ + bmp_name + """_data[] PROGMEM = {""", end="")
+
+    with Image.open(fname) as im:
+        w = im.size[0]
+        h = im.size[1]
+        im = im.convert('L')
+        pix = im.load()
+
+        for i in range(w*h // 8):
+            x = (i * 8) % w
+            y = i // (w // 8)
+            b = 0
+            if x == 0:
+                print("")
+            for bit in range(8):
+                if x + bit >= w: break
+                if y >= h: break
+                if pix[x + bit, y] < 127:
+                    b += 1 << bit
+            print("\t", hex(b), end=", ")
+
+
+
+    print("""
+};
+
+
+const gfx_bitmap_t """ + bmp_name + """ = {
+\t.width = """ + str(w) + """,
+\t.height = """ + str(h) + """,
+\t.data = (uint8_t*)""" + bmp_name + """_data,
+};
+""")
+
+
+if __name__ == "__main__":
+    script_name = sys.argv[0]
+    if len(sys.argv) > 1:
+        get_bytestring(sys.argv[1])
+    else:
+        print("\n{} - image to header file converter, to be used with esp-gfx library\n\nUsage: {} <image>\n".format(script_name, script_name))
+        print("\tUse redirection ({} <opts> > header.h) to save the header".format(script_name))
+        print("\tThis script needs Pillow installed to work")
+