Add some simple overlay examples

Also include them in the standard list of tests.

Signed-off-by: David Plowman <[email protected]>

Author: davidplowman

examples/overlay_drm.py

@@ -0,0 +1,17 @@
+from picamera2.picamera2 import *
+import numpy as np
+import time
+
+picam2 = Picamera2()
+picam2.configure(picam2.preview_configuration())
+picam2.start_preview(Preview.DRM)
+picam2.start()
+time.sleep(1)
+
+overlay = np.zeros((300, 400, 4), dtype=np.uint8)
+overlay[:150, 200:] = (255, 0, 0, 64)
+overlay[150:, :200] = (0, 255, 0, 64)
+overlay[150:, 200:] = (0, 0, 255, 64)
+
+picam2.set_overlay(overlay)
+time.sleep(2)

examples/overlay_gl.py

@@ -0,0 +1,17 @@
+from picamera2.picamera2 import *
+import numpy as np
+import time
+
+picam2 = Picamera2()
+picam2.configure(picam2.preview_configuration())
+picam2.start_preview(Preview.QTGL)
+picam2.start()
+time.sleep(1)
+
+overlay = np.zeros((300, 400, 4), dtype=np.uint8)
+overlay[:150, 200:] = (255, 0, 0, 64)
+overlay[150:, :200] = (0, 255, 0, 64)
+overlay[150:, 200:] = (0, 0, 255, 64)
+
+picam2.set_overlay(overlay)
+time.sleep(2)

examples/overlay_null.py

@@ -0,0 +1,17 @@
+from picamera2.picamera2 import *
+import numpy as np
+import time
+
+picam2 = Picamera2()
+picam2.configure(picam2.preview_configuration())
+picam2.start_preview()
+picam2.start()
+time.sleep(1)
+
+overlay = np.zeros((300, 400, 4), dtype=np.uint8)
+overlay[:150, 200:] = (255, 0, 0, 64)
+overlay[150:, :200] = (0, 255, 0, 64)
+overlay[150:, 200:] = (0, 0, 255, 64)
+
+picam2.set_overlay(overlay)
+time.sleep(2)

examples/overlay_qt.py

@@ -0,0 +1,17 @@
+from picamera2.picamera2 import *
+import numpy as np
+import time
+
+picam2 = Picamera2()
+picam2.configure(picam2.preview_configuration())
+picam2.start_preview(Preview.QT)
+picam2.start()
+time.sleep(1)
+
+overlay = np.zeros((300, 400, 4), dtype=np.uint8)
+overlay[:150, 200:] = (255, 0, 0, 64)
+overlay[150:, :200] = (0, 255, 0, 64)
+overlay[150:, 200:] = (0, 0, 255, 64)
+
+picam2.set_overlay(overlay)
+time.sleep(2)

tests/test_list.txt

@@ -9,6 +9,9 @@ examples/exposure_fixed.py
 examples/metadata.py
 examples/opencv_face_detect_2.py
 examples/opencv_mertens_merge.py
+examples/overlay_gl.py
+examples/overlay_null.py
+examples/overlay_qt.py
 examples/preview.py
 examples/preview_x_forwarding.py
 examples/raw.py