[build] add cvitek build scripts

Change-Id: If63ce4a669e5d4d72b8e3b9253336dd99bf74c30

build/tools/common/image_tool/cimg2raw.py

@@ -0,0 +1,83 @@
+#!/usr/bin/python3
+# -*- coding: utf-8 -*-
+import logging
+import argparse
+import errno
+from os import getcwd, path, makedirs
+
+MAX_LOAD_SIZE = 100 * 1024 * 1024
+CHUNK_TYPE_DONT_CARE = 0
+CHUNK_TYPE_CRC_CHECK = 1
+FORMAT = "%(levelname)s: %(message)s"
+logging.basicConfig(level=logging.INFO, format=FORMAT)
+
+
+def parse_Args():
+    parser = argparse.ArgumentParser(description="Create CVITEK device image")
+
+    parser.add_argument(
+        "file_path",
+        metavar="file_path",
+        type=str,
+        help="the file you want to pack with cvitek image header",
+    )
+    parser.add_argument(
+        "--output_dir",
+        metavar="output_folder_path",
+        type=str,
+        help="the folder path to save output, defuale will be ./rawimages",
+        default=path.join(getcwd(), "rawimages"),
+    )
+    parser.add_argument(
+        "-v", "--verbose", help="increase output verbosity", action="store_true"
+    )
+    args = parser.parse_args()
+    if args.verbose:
+        logging.debug("Enable more verbose output")
+        logging.getLogger().setLevel(level=logging.DEBUG)
+
+    return args
+
+
+class ImagerRemover(object):
+    @staticmethod
+    def removeHeader(img, out):
+        """
+        Header format total 64 bytes
+        4 Bytes: Magic
+        4 Bytes: Version
+        4 Bytes: Chunk header size
+        4 Bytes: Total chunks
+        4 Bytes: File size
+        32 Bytes: Extra Flags
+        12 Bytes: Reserved
+        """
+        with open(img, "rb") as fd:
+            magic = fd.read(4)
+            if magic != b"CIMG":
+                logging.error("%s is not cvitek image!!" % img)
+                raise TypeError
+
+            with open(out, "wb") as fo:
+                fd.seek(64)  # Skip Header
+                # Skip chunk header
+                while fd.read(64):
+                    fo.write(fd.read(MAX_LOAD_SIZE))
+
+
+def main():
+    args = parse_Args()
+    output_path = path.join(args.output_dir, path.basename(args.file_path))
+    logging.debug("Input %s, Output %s\n" % (args.file_path, output_path))
+    logging.debug("Creating folder for output\n")
+    try:
+        makedirs(args.output_dir)
+    except OSError as e:
+        if e.errno != errno.EEXIST:
+            raise
+    ImagerRemover.removeHeader(args.file_path, output_path)
+    logging.info("Write %s Done" % output_path)
+
+
+if __name__ == "__main__":
+    main()