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PNG Capture

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This adds an additional action to BaseCamera to capture and return a PNG Blob. It makes the PNG using Pillow, in a very similar way to `capture_jpeg`.

I have parametrized the test for `capture_jpeg` so it now tests both jpeg and png with the same code.
This commit is contained in:
Richard Bowman 2026-04-22 23:22:11 +01:00 • committed by Julian Stirling
parent 59a93c673a
commit ee6911f4a7
2 changed files with 50 additions and 15 deletions
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5
tests/integration_tests/test_actions.py
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@ -40,10 +40,11 @@ def test_grab_jpeg(simulation_test_env):
assert image.size == (820, 616)
def test_capture_jpeg_metadata(simulation_test_env):
@pytest.mark.parametrize("fmt", ["jpeg", "png"])
def test_capture_and_metadata(simulation_test_env, fmt):
"""Check that the position is encoded into the image metadata."""
camera = simulation_test_env.get_thing_client("camera")
blob = camera.capture_jpeg()
blob = getattr(camera, f"capture_{fmt}")()
image = Image.open(blob.open())
exif_dict = piexif.load(image.info["exif"])
encoded_metadata = exif_dict["Exif"][piexif.ExifIFD.UserComment]