ddidderr/zstd-rs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Address PR comments and minor fixes

Browse Source
This commit is contained in:
Sean Purcell
2017-04-12 11:15:46 -07:00
parent d048fefef7
commit e80f1d74b3
6 changed files with 20 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files
contrib/seekable_format/zstd_seekable_compression_format.md
+12 -3
View File
@@ -42,13 +42,16 @@ The structure of the seek table frame is as follows:
__`Skippable_Magic_Number`__
Value : 0x184D2A5?, which means any value from 0x184D2A50 to 0x184D2A5F.
All 16 values are valid to identify a skippable frame.
Value : 0x184D2A5E.
This is for compatibility with [Zstandard skippable frames].
Since it is legal for other Zstandard skippable frames to use the same
magic number, it is not recommended for a decoder to recognize frames
solely on this.
__`Frame_Size`__
The total size of the skippable frame, not including the `Skippable_Magic_Number` or `Frame_Size`. This is for compatibility with [Zstandard skippable frames].
The total size of the skippable frame, not including the `Skippable_Magic_Number` or `Frame_Size`.
This is for compatibility with [Zstandard skippable frames].
[Zstandard skippable frames]: https://github.com/facebook/zstd/blob/master/doc/zstd_compression_format.md#skippable-frames
@@ -59,6 +62,12 @@ The seek table footer format is as follows:
|------------------|-----------------------|-----------------------|
| 4 bytes | 1 byte | 4 bytes |
__`Seekable_Magic_Number`__
Value : 0x8F92EAB1.
This value must be the last bytes present in the compressed file so that decoders
can efficiently find it and determine if there is an actual seek table present.
__`Number_Of_Chunks`__
The number of stored chunks in the data.