M4A: Support 64 bit atom sizes #253
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Thanks! This needs a sample file in https://github.com/tinytag/tinytag/blob/master/tinytag/tests/test_all.py. You can truncate an existing file to only include the header, and add it to https://github.com/tinytag/tinytag/tree/master/tinytag/tests/samples. In order to keep the correct atom size in the debug message, I would add a |
mathiascode
reviewed
Jun 18, 2025
| atom_size = unpack('>I', atom_header[:4])[0] | ||
| if atom_size == 1: # Indicates 64 bit size value will be packed after the header | ||
| large_size_header = fh.read(large_size_len) | ||
| atom_size = unpack('>Q', large_size_header[:8])[0] - large_size_len |
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[:8] is redundant in this case.
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When a 64bit atom size is detected, the larger size will not be retrieved after header.