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This commit is contained in:
Andrew Murray 2025-06-11 19:38:49 +10:00
parent 23a7fefced
commit a714db9057
1 changed files with 6 additions and 6 deletions
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12
src/PIL/QoiImagePlugin.py
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@ -145,9 +145,9 @@ class QoiEncoder(ImageFile.PyEncoder):
return data return data
def _delta(self, left: int, right: int) -> int: def _delta(self, left: int, right: int) -> int:
result = (left - right) & 0xFF result = (left - right) & 255
if result >= 0x80: if result >= 128:
result -= 0x100 result -= 256
return result return result
def encode(self, bufsize: int) -> tuple[int, int, bytes]: def encode(self, bufsize: int) -> tuple[int, int, bytes]:
@ -158,7 +158,7 @@ class QoiEncoder(ImageFile.PyEncoder):
data = bytearray() data = bytearray()
w, h = self.im.size w, h = self.im.size
bands = Image.getmodebands(self.im.mode) bands = Image.getmodebands(self.mode)
for y in range(h): for y in range(h):
for x in range(w): for x in range(w):
@ -171,7 +171,7 @@ class QoiEncoder(ImageFile.PyEncoder):
if self._run == 62: if self._run == 62:
data += self._write_run() data += self._write_run()
else: else:
if self._run > 0: if self._run:
data += self._write_run() data += self._write_run()
r, g, b, a = pixel r, g, b, a = pixel
@ -208,7 +208,7 @@ class QoiEncoder(ImageFile.PyEncoder):
self._previous_pixel = pixel self._previous_pixel = pixel
if self._run > 0: if self._run:
data += self._write_run() data += self._write_run()
data += bytes((0, 0, 0, 0, 0, 0, 0, 1)) # padding data += bytes((0, 0, 0, 0, 0, 0, 0, 1)) # padding