[FL-2052] New build system based on scons (#1269)

scripts/flipper/assets/icon.py

@@ -15,8 +15,13 @@ class Image:
         self.data = data
 
     def write(self, filename):
-        file = open(filename, "wb")
-        file.write(self.data)
+        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):
@@ -24,8 +29,62 @@ def is_file_an_icon(filename):
     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 = subprocess.check_output(["convert", file, "xbm:-"])
+    output = __tools.png2xbm(file)
     assert output
 
     # Extract data from text
@@ -38,9 +97,7 @@ def file2image(file):
     data_bin = bytearray.fromhex(data_str)
 
     # Encode icon data with LZSS
-    data_encoded_str = subprocess.check_output(
-        ["heatshrink", "-e", "-w8", "-l4"], input=data_bin
-    )
+    data_encoded_str = __tools.xbm2hs(data_bin)
 
     assert data_encoded_str