utils: raspberrypi: ctt: Changed CTT handling of VC4 and PiSP

Changed how users select which platform to tune for. Now users
specify a command line argument, '-t', to specify which target
platform.

Signed-off-by: Ben Benson <ben.benson@raspberrypi.com>
Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Tested-by: Naushir Patuck <naush@raspberrypi.com>
Acked-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

utils/raspberrypi/ctt/alsc_only.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Copyright (C) 2022, Raspberry Pi Ltd
+#
+# alsc tuning tool
+
+import sys
+
+from ctt import *
+from ctt_tools import parse_input
+
+if __name__ == '__main__':
+    """
+    initialise calibration
+    """
+    if len(sys.argv) == 1:
+        print("""
+    PiSP Lens Shading Camera Tuning Tool version 1.0
+
+    Required Arguments:
+    '-i' : Calibration image directory.
+    '-o' : Name of output json file.
+
+    Optional Arguments:
+    '-t' : Target platform - 'pisp' or 'vc4'. Default 'vc4'
+    '-c' : Config file for the CTT. If not passed, default parameters used.
+    '-l' : Name of output log file. If not passed, 'ctt_log.txt' used.
+              """)
+        quit(0)
+    else:
+        """
+        parse input arguments
+        """
+        json_output, directory, config, log_output, target = parse_input()
+        if target == 'pisp':
+            from ctt_pisp import json_template, grid_size
+        elif target == 'vc4':
+            from ctt_vc4 import json_template, grid_size
+
+        run_ctt(json_output, directory, config, log_output, json_template, grid_size, target, alsc_only=True)