114 lines
3.0 KiB
Python
114 lines
3.0 KiB
Python
import logging
|
|
import argparse
|
|
import subprocess
|
|
import io
|
|
import os
|
|
import sys
|
|
|
|
ICONS_SUPPORTED_FORMATS = ["png"]
|
|
|
|
|
|
class Image:
|
|
def __init__(self, width: int, height: int, data: bytes):
|
|
self.width = width
|
|
self.height = height
|
|
self.data = data
|
|
|
|
def write(self, filename):
|
|
with open(filename, "wb") as file:
|
|
file.write(self.data)
|
|
|
|
def data_as_carray(self):
|
|
return (
|
|
"{" + "".join("0x{:02x},".format(img_byte) for img_byte in self.data) + "}"
|
|
)
|
|
|
|
|
|
def is_file_an_icon(filename):
|
|
extension = filename.lower().split(".")[-1]
|
|
return extension in ICONS_SUPPORTED_FORMATS
|
|
|
|
|
|
class ImageTools:
|
|
__pil_unavailable = False
|
|
__hs2_unavailable = False
|
|
|
|
@staticmethod
|
|
def is_processing_slow():
|
|
try:
|
|
from PIL import Image, ImageOps
|
|
import heatshrink2
|
|
|
|
return False
|
|
except ImportError as e:
|
|
return True
|
|
|
|
def __init__(self):
|
|
self.logger = logging.getLogger()
|
|
|
|
def png2xbm(self, file):
|
|
if self.__pil_unavailable:
|
|
return subprocess.check_output(["convert", file, "xbm:-"])
|
|
|
|
try:
|
|
from PIL import Image, ImageOps
|
|
except ImportError as e:
|
|
self.__pil_unavailable = True
|
|
self.logger.info("pillow module is missing, using convert cli util")
|
|
return self.png2xbm(file)
|
|
|
|
with Image.open(file) as im:
|
|
with io.BytesIO() as output:
|
|
bw = im.convert("1")
|
|
bw = ImageOps.invert(bw)
|
|
bw.save(output, format="XBM")
|
|
return output.getvalue()
|
|
|
|
def xbm2hs(self, data):
|
|
if self.__hs2_unavailable:
|
|
return subprocess.check_output(
|
|
["heatshrink", "-e", "-w8", "-l4"], input=data
|
|
)
|
|
|
|
try:
|
|
import heatshrink2
|
|
except ImportError as e:
|
|
self.__hs2_unavailable = True
|
|
self.logger.info("heatshrink2 module is missing, using heatshrink cli util")
|
|
return self.xbm2hs(data)
|
|
|
|
return heatshrink2.compress(data, window_sz2=8, lookahead_sz2=4)
|
|
|
|
|
|
__tools = ImageTools()
|
|
|
|
|
|
def file2image(file):
|
|
output = __tools.png2xbm(file)
|
|
assert output
|
|
|
|
# Extract data from text
|
|
f = io.StringIO(output.decode().strip())
|
|
width = int(f.readline().strip().split(" ")[2])
|
|
height = int(f.readline().strip().split(" ")[2])
|
|
data = f.read().strip().replace("\n", "").replace(" ", "").split("=")[1][:-1]
|
|
data_str = data[1:-1].replace(",", " ").replace("0x", "")
|
|
|
|
data_bin = bytearray.fromhex(data_str)
|
|
|
|
# Encode icon data with LZSS
|
|
data_encoded_str = __tools.xbm2hs(data_bin)
|
|
|
|
assert data_encoded_str
|
|
|
|
data_enc = bytearray(data_encoded_str)
|
|
data_enc = bytearray([len(data_enc) & 0xFF, len(data_enc) >> 8]) + data_enc
|
|
|
|
# Use encoded data only if its lenght less than original, including header
|
|
if len(data_enc) < len(data_bin) + 1:
|
|
data = b"\x01\x00" + data_enc
|
|
else:
|
|
data = b"\x00" + data_bin
|
|
|
|
return Image(width, height, data)
|