From 5c4dd877b263a1ee385e873677860f9a50039e3c Mon Sep 17 00:00:00 2001
From: Vadim Melnik <vmelnik@docsultant.com>
Date: Mon, 24 Jun 2024 15:44:21 +0300
Subject: [PATCH]  Tune up extend parse_wQR.py, added click skeleton, WiP, #96

---
 Parsing/parse_wQR.py | 159 +++++++++++++++++++++++++++----------------
 1 file changed, 100 insertions(+), 59 deletions(-)

diff --git a/Parsing/parse_wQR.py b/Parsing/parse_wQR.py
index ce49f93..6259f96 100755
--- a/Parsing/parse_wQR.py
+++ b/Parsing/parse_wQR.py
@@ -1,77 +1,118 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import json
+import logging
+import os
+
 from pyzbar.pyzbar import decode, ZBarSymbol
 import cv2
 import sys
 import numpy as np
 import time
+import click
 
-starttime = time.time()
-cap = cv2.VideoCapture(sys.argv[1])
+# initialize the logger
+logger = logging.getLogger(__name__)
+logging.getLogger().addHandler(logging.StreamHandler(sys.stdout))
+logger.setLevel(logging.INFO)
+logger.debug(f"name={__name__}")
 
-# Check if the video opened successfully
-if not cap.isOpened():
-    print("Error: Could not open video.", file=sys.stderr)
-    sys.exit(1)
 
-clips = []
-qrData = {}
+def finalize_record(iframe):
+    global record
+    record['frame_end'] = iframe
+    record['time_end'] = 'TODO'
+    print(json.dumps(record), flush=True)
+    record = None
 
-inRun = False
 
-clip_start = None
-acqNum = None
-runNum = None
+def do_parse(path_video: str):
+    starttime = time.time()
+    cap = cv2.VideoCapture(path_video)
 
+    # Check if the video opened successfully
+    if not cap.isOpened():
+        print("Error: Could not open video.", file=sys.stderr)
+        sys.exit(1)
 
-#for f in vid.iter_frames(with_times=True):
+    clips = []
+    qrData = {}
 
-# TODO: just use tqdm for progress indication
-iframe = 0
-record = None
+    inRun = False
 
-def finalize_record():
-    global record
-    record['frame_end'] = iframe
-    record['time_end'] = 'TODO'
-    print(json.dumps(record), flush=True)
+    clip_start = None
+    acqNum = None
+    runNum = None
+
+
+    #for f in vid.iter_frames(with_times=True):
+
+    # TODO: just use tqdm for progress indication
+    iframe = 0
     record = None
 
-while True:
-    iframe += 1
-    ret, frame = cap.read()
-    if not ret:
-        break
-    
-    f = np.mean(frame, axis=2)  # poor man greyscale from RGB
-
-    if np.mod(iframe,50) == 0:
-        print(f"iframe={iframe} {np.std(f)}", file=sys.stderr)
-    
-#    if np.std(f) > 10:
-#        cv2.imwrite('grayscale_image.png', f)
-#        import pdb; pdb.set_trace()
-
-    cod = decode(f, symbols=[ZBarSymbol.QRCODE])
-    if len(cod) > 0:
-        assert len(cod) == 1, f"Expecting only one, got {len(cod)}"
-        data = eval(eval(str(cod[0].data)).decode('utf-8'))
-        if record is not None:
-            if data == record['data']:
-                # we are still in the same QR code record
-                continue
-            # It is a different QR code! we need to finalize current one
-            finalize_record()
-        # We just got beginning of the QR code!
-        record = {
-            'frame_start': iframe,
-            'time_start': "TODO-figureout",
-            'data' : data
-        }
-    else:
-        if record:
-            finalize_record()
- 
-if record:
-    finalize_record()
+    while True:
+        iframe += 1
+        ret, frame = cap.read()
+        if not ret:
+            break
+
+        f = np.mean(frame, axis=2)  # poor man greyscale from RGB
+
+        if np.mod(iframe,50) == 0:
+            print(f"iframe={iframe} {np.std(f)}", file=sys.stderr)
+
+    #    if np.std(f) > 10:
+    #        cv2.imwrite('grayscale_image.png', f)
+    #        import pdb; pdb.set_trace()
+
+        cod = decode(f, symbols=[ZBarSymbol.QRCODE])
+        if len(cod) > 0:
+            assert len(cod) == 1, f"Expecting only one, got {len(cod)}"
+            data = eval(eval(str(cod[0].data)).decode('utf-8'))
+            if record is not None:
+                if data == record['data']:
+                    # we are still in the same QR code record
+                    continue
+                # It is a different QR code! we need to finalize current one
+                finalize_record(iframe)
+            # We just got beginning of the QR code!
+            record = {
+                'frame_start': iframe,
+                'time_start': "TODO-figureout",
+                'data' : data
+            }
+        else:
+            if record:
+                finalize_record(iframe)
+
+    if record:
+        finalize_record(iframe)
+
+
+@click.command(help='Utility to parse video and locate integrated '
+                    'QR time codes.')
+@click.argument('path', type=click.Path(exists=True))
+@click.option('--log-level', default='INFO',
+              type=click.Choice(['DEBUG', 'INFO',
+                                 'WARNING', 'ERROR',
+                                 'CRITICAL']),
+              help='Set the logging level')
+@click.pass_context
+def main(ctx, path: str, log_level):
+    logger.setLevel(log_level)
+    logger.debug("parse_wQR.py tool")
+    logger.debug(f"current dir: {os.getcwd()}")
+    logger.debug(f"path={path}")
+
+    if not os.path.exists(path):
+        logger.error(f"Path does not exist: {path}")
+        return 1
+
+    do_parse(path)
+    return 0
+
+
+if __name__ == "__main__":
+    code = main()
+