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Allow quality_check.py test to use a file for bitrate checks #1068

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merged 1 commit into from
Jul 1, 2024
Merged

Allow quality_check.py test to use a file for bitrate checks #1068

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47 changes: 42 additions & 5 deletions tests/quality_check.py
100644 → 100755
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Original file line number Diff line number Diff line change
@@ -1,7 +1,12 @@
#!/usr/bin/python3

import io
import os
import time

from picamera2 import Picamera2
import cv2

from picamera2 import MappedArray, Picamera2
from picamera2.encoders import H264Encoder, JpegEncoder, MJPEGEncoder, Quality
from picamera2.outputs import FileOutput

Expand All @@ -10,7 +15,38 @@
# between very low/high is so great that the behaviour should be reliable enough.


# If ASSET_DIR is set, we can inject this file instead of using camera images.
FILENAME = "quality_check.mp4"
FRAMES = []
COUNTER = 0
SIZE = (640, 360)
if os.environ.get('ASSET_DIR') is not None:
filename = os.path.join(os.path.expanduser(os.environ['ASSET_DIR']), FILENAME)
if os.path.isfile(filename):
print("Using file", filename)
cap = cv2.VideoCapture(filename)
while len(FRAMES) < 100:
ret, frame = cap.read()
if not ret:
break
if frame.shape != (SIZE[1], SIZE[0], 3):
frame = cv2.resize(frame, dsize=SIZE)
FRAMES.append(frame)
else:
print("Using camera")


def callback(request):
if FRAMES:
global COUNTER
with MappedArray(request, 'main') as m:
m.array[...] = FRAMES[COUNTER]
COUNTER = (COUNTER + 1) % len(FRAMES)


def do_encode(encoder, quality):
global COUNTER
COUNTER = 0
data = io.BytesIO()
picam2.start_encoder(encoder, output=FileOutput(data), name='main', quality=quality)
time.sleep(time_seconds)
Expand All @@ -19,25 +55,26 @@ def do_encode(encoder, quality):


picam2 = Picamera2()
config = picam2.create_video_configuration({'format': 'RGB888', 'size': (640, 360)}, lores={'size': (640, 360)})
config = picam2.create_video_configuration({'format': 'RGB888', 'size': SIZE}, lores={'size': SIZE})
picam2.configure(config)
picam2.start()
picam2.pre_callback = callback
time_seconds = 5

low_quality = do_encode(MJPEGEncoder(), Quality.VERY_LOW)
high_quality = do_encode(MJPEGEncoder(), Quality.VERY_HIGH)
print("MJPEGEncoder: low quality", low_quality, "high quality", high_quality)
if (low_quality > high_quality):
if (1.5 * low_quality > high_quality):
print("Error: MJPEGEncoder file sizes not as expected")

low_quality = do_encode(H264Encoder(), Quality.VERY_LOW)
high_quality = do_encode(H264Encoder(), Quality.VERY_HIGH)
print("H264Encoder: low quality", low_quality, "high quality", high_quality)
if (low_quality > high_quality):
if (1.5 * low_quality > high_quality):
print("Error: H264Encoder file sizes not as expected")

low_quality = do_encode(JpegEncoder(), Quality.VERY_LOW)
high_quality = do_encode(JpegEncoder(), Quality.VERY_HIGH)
print("JpegEncoder: low quality", low_quality, "high quality", high_quality)
if (low_quality > high_quality):
if (1.5 * low_quality > high_quality):
print("Error: JpegEncoder file sizes not as expected")
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