jepler/Adafruit_CircuitPython_OV5640
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revise calculation of JPEG buffer

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jerryneedell 2025-02-03 20:00:52 -05:00
parent d2b84ed5f8
commit 36d77ee7f0
1 changed files with 3 additions and 1 deletions
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4
adafruit_ov5640/__init__.py
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@ -1236,7 +1236,9 @@ class OV5640(_SCCB16CameraBase): # pylint: disable=too-many-instance-attributes
def capture_buffer_size(self) -> int: def capture_buffer_size(self) -> int:
"""Return the size of capture buffer to use with current resolution & colorspace settings""" """Return the size of capture buffer to use with current resolution & colorspace settings"""
if self.colorspace == OV5640_COLOR_JPEG: if self.colorspace == OV5640_COLOR_JPEG:
return self.width * self.height // self.quality # This is somewhat arbirary but seems to work for a wide range of JPEG images
# the user can chose to further scale the buffer in the user code if necessary
return 2 * (self.width * self.height // self.quality)
if self.colorspace == OV5640_COLOR_GRAYSCALE: if self.colorspace == OV5640_COLOR_GRAYSCALE:
return self.width * self.height return self.width * self.height
return self.width * self.height * 2 return self.width * self.height * 2