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works with skippables frame id 0x184D2A50 (12 bytes per compressed frame)
brotli is supported the same way, it will encapsulate the real brotli stream
within an 16 byte frame header
Generic skippable frame definition
size
value
description
4 bytes
0x184D2A50U
magic for skippable frame
4 bytes
4
size of skippable frame
4 bytes
compressed size
size of the following frame (compressed data)
the frame header for brotli is defined a bit different:
size
value
description
4 bytes
0x184D2A50U
magic for skippable frame (like zstd)
4 bytes
8
size of skippable frame
4 bytes
compressed size
size of the following frame (compressed data)
2 bytes
0x5242U
magic for brotli "BR"
2 bytes
uncompressed size
allocation hint for decompressor (64KB * this size)
the frame header for Snappy-c is defined a bit different:
size
value
description
4 bytes
0x184D2A50U
magic for skippable frame (like zstd)
4 bytes
8
size of skippable frame
4 bytes
compressed size
size of the following frame (compressed data)
2 bytes
0x5053U
magic for Snappy-c "SP"
2 bytes
uncompressed size
allocation hint for decompressor (64KB * this size)
the frame header for Lzfse is defined a bit different:
size
value
description
4 bytes
0x184D2A50U
magic for skippable frame (like zstd)
4 bytes
8
size of skippable frame
4 bytes
compressed size
size of the following frame (compressed data)
2 bytes
0x464CU
magic for Lzfse "LF"
2 bytes
uncompressed size
allocation hint for decompressor (64KB * this size)
/TR 2020-10-15
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