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Added comments to explain overhead_len

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This commit is contained in:
Andrew Murray 2024-08-06 06:19:15 +10:00
parent d49884e40c
commit c056406f21
1 changed files with 2 additions and 2 deletions
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src/PIL/JpegImagePlugin.py
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@ -749,7 +749,7 @@ def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
MAX_BYTES_IN_MARKER = 65533
xmp = info.get("xmp")
if xmp:
overhead_len = 29
overhead_len = 29 # b"http://ns.adobe.com/xap/1.0/\x00"
max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len
if len(xmp) > max_data_bytes_in_marker:
msg = "XMP data is too long"
@ -759,7 +759,7 @@ def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
icc_profile = info.get("icc_profile")
if icc_profile:
overhead_len = 14
overhead_len = 14 # b"ICC_PROFILE\0" + o8(i) + o8(len(markers))
max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len
markers = []
while icc_profile: