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Do not calculate destination length each time

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This commit is contained in:
Andrew Murray 2024-04-01 15:24:10 +11:00
parent d31148bb86
commit f69168523e
4 changed files with 8 additions and 4 deletions
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3
src/PIL/BmpImagePlugin.py
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@ -291,7 +291,8 @@ class BmpRleDecoder(ImageFile.PyDecoder):
rle4 = self.args[1] rle4 = self.args[1]
data = bytearray() data = bytearray()
x = 0 x = 0
while len(data) < self.state.xsize * self.state.ysize: dest_length = self.state.xsize * self.state.ysize
while len(data) < dest_length:
pixels = self.fd.read(1) pixels = self.fd.read(1)
byte = self.fd.read(1) byte = self.fd.read(1)
if not pixels or not byte: if not pixels or not byte:

3
src/PIL/DdsImagePlugin.py
View File

@ -497,7 +497,8 @@ class DdsRgbDecoder(ImageFile.PyDecoder):
data = bytearray() data = bytearray()
bytecount = bitcount // 8 bytecount = bitcount // 8
while len(data) < self.state.xsize * self.state.ysize * len(masks): dest_length = self.state.xsize * self.state.ysize * len(masks)
while len(data) < dest_length:
value = int.from_bytes(self.fd.read(bytecount), "little") value = int.from_bytes(self.fd.read(bytecount), "little")
for i, mask in enumerate(masks): for i, mask in enumerate(masks):
masked_value = value & mask masked_value = value & mask

3
src/PIL/PpmImagePlugin.py
View File

@ -307,7 +307,8 @@ class PpmDecoder(ImageFile.PyDecoder):
out_byte_count = 4 if self.mode == "I" else 1 out_byte_count = 4 if self.mode == "I" else 1
out_max = 65535 if self.mode == "I" else 255 out_max = 65535 if self.mode == "I" else 255
bands = Image.getmodebands(self.mode) bands = Image.getmodebands(self.mode)
while len(data) < self.state.xsize * self.state.ysize * bands * out_byte_count: dest_length = self.state.xsize * self.state.ysize * bands * out_byte_count
while len(data) < dest_length:
pixels = self.fd.read(in_byte_count * bands) pixels = self.fd.read(in_byte_count * bands)
if len(pixels) < in_byte_count * bands: if len(pixels) < in_byte_count * bands:
# eof # eof

3
src/PIL/QoiImagePlugin.py
View File

@ -53,7 +53,8 @@ class QoiDecoder(ImageFile.PyDecoder):
data = bytearray() data = bytearray()
bands = Image.getmodebands(self.mode) bands = Image.getmodebands(self.mode)
while len(data) < self.state.xsize * self.state.ysize * bands: dest_length = self.state.xsize * self.state.ysize * bands
while len(data) < dest_length:
byte = self.fd.read(1)[0] byte = self.fd.read(1)[0]
if byte == 0b11111110: # QOI_OP_RGB if byte == 0b11111110: # QOI_OP_RGB
value = self.fd.read(3) + self._previous_pixel[3:] value = self.fd.read(3) + self._previous_pixel[3:]