py: cam: Cleanups

No functional changes. Drop unused variables, reduce typechecker
warnings.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/py/cam/cam.py

@@ -304,7 +304,7 @@ def event_handler(state):
 
         running = any(ctx['reqs-completed'] < ctx['opt-capture'] for ctx in contexts)
         return running
-    except Exception as e:
+    except Exception:
         traceback.print_exc()
         return False
 

src/py/cam/cam_qt.py

@@ -184,12 +184,7 @@ class QtRenderer:
         windows = []
 
         for ctx in self.contexts:
-            camera = ctx['camera']
-
             for stream in ctx['streams']:
-                fmt = stream.configuration.pixel_format
-                size = stream.configuration.size
-
                 window = MainWindow(ctx, stream)
                 window.setAttribute(QtCore.Qt.WA_ShowWithoutActivating)
                 window.show()
@@ -199,10 +194,10 @@ class QtRenderer:
 
     def run(self):
         camnotif = QtCore.QSocketNotifier(self.cm.efd, QtCore.QSocketNotifier.Read)
-        camnotif.activated.connect(lambda x: self.readcam())
+        camnotif.activated.connect(lambda _: self.readcam())
 
         keynotif = QtCore.QSocketNotifier(sys.stdin.fileno(), QtCore.QSocketNotifier.Read)
-        keynotif.activated.connect(lambda x: self.readkey())
+        keynotif.activated.connect(lambda _: self.readkey())
 
         print('Capturing...')
 
@@ -292,9 +287,6 @@ class MainWindow(QtWidgets.QWidget):
     def buf_to_qpixmap(self, stream, fb):
         with fb.mmap() as mfb:
             cfg = stream.configuration
-            w = cfg.size.width
-            h = cfg.size.height
-            pitch = cfg.stride
 
             if cfg.pixel_format == libcam.formats.MJPEG:
                 img = Image.open(BytesIO(mfb.planes[0]))

src/py/cam/cam_qtgl.py

@@ -5,16 +5,11 @@ from PyQt5 import QtCore, QtWidgets
 from PyQt5.QtCore import Qt
 
 import math
-import numpy as np
 import os
 import sys
 
 os.environ['PYOPENGL_PLATFORM'] = 'egl'
 
-import OpenGL
-# OpenGL.FULL_LOGGING = True
-
-from OpenGL import GL as gl
 from OpenGL.EGL.EXT.image_dma_buf_import import *
 from OpenGL.EGL.KHR.image import *
 from OpenGL.EGL.VERSION.EGL_1_0 import *
@@ -149,10 +144,10 @@ class QtRenderer:
 
     def run(self):
         camnotif = QtCore.QSocketNotifier(self.state['cm'].efd, QtCore.QSocketNotifier.Read)
-        camnotif.activated.connect(lambda x: self.readcam())
+        camnotif.activated.connect(lambda _: self.readcam())
 
         keynotif = QtCore.QSocketNotifier(sys.stdin.fileno(), QtCore.QSocketNotifier.Read)
-        keynotif.activated.connect(lambda x: self.readkey())
+        keynotif.activated.connect(lambda _: self.readkey())
 
         print('Capturing...')