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Fix example of offset calculation in sf-buffer

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babic_a
2020-07-23 12:30:45 +02:00
parent 73389746ca
commit 234081f931
1 changed files with 6 additions and 3 deletions
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sf-buffer/README.md
+6 -3
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@@ -70,9 +70,12 @@ in the file and there is no need to have an index for frame retrieval.
The offset where a specific pulse_id is written in a file is calculated:
```c++
// FILE_MOD = 1000
uint64_t file_base = pulse_id / FILE_MOD;
file_base *= FILE_MOD;
// We save 1000 pulses in each file.
const uint64_t FILE_MOD = 1000
// Relative index of pulse_id inside file.
size_t file_base = pulse_id % FILE_MOD;
// Offset in bytes of relative index in file.
size_t file_offset = file_base * sizeof(BufferBinaryFormat);
```