78 lines
2.1 KiB
Python
78 lines
2.1 KiB
Python
"""Test data collection from the Raspberry Picamera."""
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import json
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from pathlib import Path
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import numpy as np
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from PIL import Image
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def test_jpeg_and_array(picamera_client):
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"""Check that a jpeg grabbed from the stream is the same size as other captures.
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Compare it to an array capture and a jpeg capture.
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"""
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# Grab a jpeg from the stream
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blob = picamera_client.grab_jpeg()
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mjpeg_frame = Image.open(blob.open())
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# Verify throws an error if there are issues with the image
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mjpeg_frame.verify()
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assert mjpeg_frame.format == "JPEG"
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# Capture a jpeg
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blob = picamera_client.capture_jpeg(stream_name="main")
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jpeg_capture = Image.open(blob.open())
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jpeg_capture.verify()
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assert jpeg_capture.format == "JPEG"
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# Capture an array
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arrlist = picamera_client.capture_array(stream_name="main")
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array_main = np.array(arrlist)
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# Verify image sizes are the same
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assert mjpeg_frame.size == jpeg_capture.size
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assert array_main.shape[1::-1] == jpeg_capture.size
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def test_record_framerate(picamera_client):
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"""Check that framerate monitoring creates a valid JSON log with good data."""
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log_file = Path(picamera_client.record_framerate(duration=1.0))
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assert log_file.exists()
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assert log_file.is_file()
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# Ensure file is not empty
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assert log_file.stat().st_size > 0
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# Load JSON
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with open(log_file, "r") as f:
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data = json.load(f)
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assert "summary" in data
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assert "samples" in data
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summary = data["summary"]
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samples = data["samples"]
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assert "total_duration" in summary
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assert "total_frames" in summary
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assert "avg_fps" in summary
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assert summary["total_duration"] > 0
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assert summary["total_frames"] > 0
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assert summary["avg_fps"] > 0
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assert len(samples) > 0
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sample = samples[0]
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assert "timestamp" in sample
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assert "frame_count" in sample
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assert "frame_size_bytes" in sample
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assert "instant_fps" in sample
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assert sample["timestamp"] > 0
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assert sample["frame_count"] > 0
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assert sample["frame_size_bytes"] > 0
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assert samples[-1]["frame_count"] > 0
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