Create extract_font_v3.py

Co-Authored-By: tywtyw2002 <[email protected]>

font_and_graphics/extract_font_v3.py

@@ -0,0 +1,119 @@
+'''
+Author: @tywtyw2002
+
+Description: Extract graphcs from firmware version k5_V3.00.10
+
+https://gist.github.com/tywtyw2002/fc90f8f8305120c42973d30868ed227e#file-extract-py
+https://github.com/amnemonic/Quansheng_UV-K5_Firmware/issues/67
+
+'''
+
+
+
+def bmp(rawdata, w, h):
+    rawdata = bytes(reversed(rawdata))
+    bitdata = b''
+
+    if w<16:
+        bitdata = b''.join([ bytes([rawdata[i],0,0,0]) for i in range(0,len(rawdata)) ])
+    elif w<24:
+        for i in range(len(rawdata)//2):
+            bitdata += rawdata[i*2:i*2+2]+b'\x00\x00'
+
+    return (b"BM"                  + #signature 2bytes \x42\x4D
+            b"\x00\x00\x00\x00"    + #filesize  (ignored by most editors) 
+            b"\x00\x00\x00\x00"    + #reserved
+            b"\x3E\x00\x00\x00"    + #bfOffBits
+            b"\x28\x00\x00\x00"    + #headerszie always 0x28
+            bytes([w%0x100,w//0x100,0,0])+ #biWidth
+            bytes([h%0x100,h//0x100,0,0])+ #biHeight
+            b"\x01\x00"            + #planes always1
+            b"\x01\x00"            + #bitcount 1=monochrome
+            b"\x00\x00\x00\x00"    + #compression
+            b"\x00\x00\x00\x00"+
+            b"\x00\x00\x00\x00"+
+            b"\x00\x00\x00\x00"+
+            b"\x00\x00\x00\x00"+
+            b"\x00\x00\x00\x00"+
+            b"\xff\xff\xff\x00"    + #colors[0]
+            b"\x00\x00\x00\x00"    + #colors[1]
+            bytes(bitdata)
+            )
+
+
+
+def mem16toBmp(raw_mem,symbol_width):
+    bmp_format = b''
+    for s in range(0,len(raw_mem)//(symbol_width*2)):
+        symb_offset = s*symbol_width*2
+        for i in range(0,symbol_width):
+            bmp_format += bytes([raw_mem[symb_offset+i],raw_mem[symb_offset+i+symbol_width],])
+    return bmp_format
+
+
+
+
+#===============================================================================================
+
+
+# k5_v2.01.26_publish_dec_cut.bin
+FW_NAME = "fw.dec.bin"
+fw = open(FW_NAME,'rb').read()
+
+FW_MARK = 0x0000CED0# 0xD348
+
+#Misc symbols @0xD348
+with open('01_08px_symbols.bmp','wb') as f:
+    data = fw[FW_MARK:FW_MARK+434]
+    f.write(bmp(data,8,len(data)))
+
+
+#Big digits @0xD502
+BG_MARK = FW_MARK + 434
+with open('02_16px_digits.bmp','wb') as f:
+    data = fw[BG_MARK:BG_MARK+286]
+    f.write(bmp(data,8,len(data)))
+
+with open('03_16px_digits_stitched.bmp','wb') as f:
+    data = mem16toBmp(fw[BG_MARK:BG_MARK+286],13)
+    f.write(bmp(data,16,len(data)//2))
+
+
+
+
+#Small digits @0xD620
+SD_MARK = FW_MARK + 720
+with open('04_8px_digits.bmp','wb') as f:
+    data = fw[SD_MARK:SD_MARK+77]
+    f.write(bmp(data,8,len(data)))
+
+
+#Full alphabet @0xD66D 
+# AL_MARK = 0xd138
+AL_MARK = FW_MARK + 720 + 77
+with open('05_16px_alphabet.bmp','wb') as f:
+    data = fw[AL_MARK:AL_MARK+ 14*94] # 94 characters, 14 bytes each
+    f.write(bmp(data,8,len(data)))
+
+with open('06_16px_alphabet_stitched.bmp','wb') as f:
+    data = mem16toBmp(fw[AL_MARK:AL_MARK+ 14*94],7)
+    f.write(bmp(data,16,len(data)//2))
+
+#Chinese alphabet
+CJK_MARK = FW_MARK + 720 + 77 + 14*94
+with open('07_16px_cjk_alphabet.bmp','wb') as f:
+    data = fw[CJK_MARK:CJK_MARK+ 26 * 143] # 143 characters, 26 bytes each
+    f.write(bmp(data,8,len(data)))
+
+with open('07_16px_cjk_alphabet_stitched.bmp','wb') as f:
+    data = mem16toBmp(fw[CJK_MARK:CJK_MARK+ 26 * 143], 13)
+    f.write(bmp(data,16,len(data)//2))
+
+#All of above in one
+#with open('07_complete.bmp','wb') as f:
+#    data = fw[FW_MARK:AL_MARK+ 16*95] # 95 characters, 16 bytes each
+#    f.write(bmp(data,8,len(data)))
+
+#with open('07_complete_stitched.bmp','wb') as f:
+#    data = mem16toBmp(fw[FW_MARK:AL_MARK+ 16*95],8)
+#    f.write(bmp(data,16,len(data)//2))