131 lines
3.2 KiB
Plaintext
131 lines
3.2 KiB
Plaintext
|
See fstapi.h for the values for the FST_BL_XXX enums.
|
||
|
|
|
||
|
|
===========================================================================
|
||
|
|
|
||
|
|
compressed wrapper (typically over whole file)
|
||
|
|
|
||
|
|
uint8_t FST_BL_ZWRAPPER
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t length of uncompressed data
|
||
|
|
[zlib compressed data]
|
||
|
|
|
||
|
|
===========================================================================
|
||
|
|
|
||
|
|
header block
|
||
|
|
|
||
|
|
uint8_t FST_BL_HDR
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t start time
|
||
|
|
uint64_t end time
|
||
|
|
double endian test for "e"
|
||
|
|
uint64_t memory used by writer
|
||
|
|
uint64_t scope creation count
|
||
|
|
uint64_t var creation count
|
||
|
|
uint64_t max var idcode
|
||
|
|
uint64_t vc section count
|
||
|
|
int8_t timescale exponent
|
||
|
|
[128 bytes] version
|
||
|
|
[128 bytes] date
|
||
|
|
|
||
|
|
===========================================================================
|
||
|
|
|
||
|
|
geometry block
|
||
|
|
|
||
|
|
uint8_t FST_BL_GEOM
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t length of uncompressed geometry data
|
||
|
|
uint64_t maxhandle
|
||
|
|
[compressed data]
|
||
|
|
|
||
|
|
(length of compressed data is section length - 24)
|
||
|
|
|
||
|
|
===========================================================================
|
||
|
|
|
||
|
|
hierarchy block
|
||
|
|
|
||
|
|
uint8_t FST_BL_HIER
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t length of uncompressed hier data
|
||
|
|
[zlib compressed data]
|
||
|
|
|
||
|
|
or
|
||
|
|
|
||
|
|
uint8_t FST_BL_HIER_LZ4
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t length of uncompressed hier data
|
||
|
|
[lz4 compressed data]
|
||
|
|
|
||
|
|
uint8_t FST_BL_HIER_LZ4DUO
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t length of uncompressed hier data
|
||
|
|
varint length of hier data compressed once with lz4
|
||
|
|
[lz4 double compressed data]
|
||
|
|
|
||
|
|
|
||
|
|
===========================================================================
|
||
|
|
|
||
|
|
dumpon/off block
|
||
|
|
|
||
|
|
uint8_t FST_BL_BLACKOUT
|
||
|
|
uint64_t section length
|
||
|
|
varint num blackouts (section below is repeated this # times)
|
||
|
|
[
|
||
|
|
uint8_t on/off (nonzero = on)
|
||
|
|
varint delta time
|
||
|
|
]
|
||
|
|
|
||
|
|
===========================================================================
|
||
|
|
|
||
|
|
1..n value change blocks:
|
||
|
|
|
||
|
|
// header
|
||
|
|
|
||
|
|
uint8_t FST_BL_VCDATA (or FST_BL_VCDATA_DYN_ALIAS)
|
||
|
|
uint64_t section length
|
||
|
|
uint64_t begin time of section
|
||
|
|
uint64_t end time of section
|
||
|
|
uint64_t amount of buffer memory required in reader for full vc traversal
|
||
|
|
varint maxvalpos (length of uncompressed data)
|
||
|
|
varint length of compressed data
|
||
|
|
varint maxhandle associated with this checkpoint data
|
||
|
|
[compressed data]
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
// value changes
|
||
|
|
|
||
|
|
varint maxhandle associated with the value change data
|
||
|
|
uint8_t pack type ('F' is fastlz, '4' is lz4,
|
||
|
|
others ['Z'/'!'] are zlib)
|
||
|
|
|
||
|
|
varint chain 0 compressed data length (0 = uncompressed)
|
||
|
|
[compressed data]
|
||
|
|
...
|
||
|
|
varint chain n compressed data length (0 = uncompressed)
|
||
|
|
[compressed data]
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
// index: chain pointer table (from 0..maxhandle-1)
|
||
|
|
|
||
|
|
varint if &1 == 1, this is <<1 literal delta
|
||
|
|
if &1 == 0, this is <<1 RLE count of zeros
|
||
|
|
if == 0, next varint is handle of prev chain to use,
|
||
|
|
bit only if FST_BL_VCDATA_DYN_ALIAS or
|
||
|
|
later VCDATA format
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
uint64_t index length (subtract from here to get index position)
|
||
|
|
|
||
|
|
---
|
||
|
|
|
||
|
|
[compressed data for time section]
|
||
|
|
uint64_t uncompressed data length in bytes
|
||
|
|
uint64_t compressed data length in bytes
|
||
|
|
uint64_t number of time items
|
||
|
|
|
||
|
|
// end of section
|
||
|
|
|
||
|
|
===========================================================================
|