14 May
2016
14 May
'16
10:47 a.m.
On 14.05.2016 09:18, Will Godfrey wrote:
I'm not sure if this has been covered before...
Similar questions seem to come up every couple of months.
While I understand that generally you can't be
certain of writing or reading
all bytes in a block of data in one call, what about the specific case where
you *always* read and write the same number of bytes and the buffer is an exact
multiple of this size.
e.g data block is 5 bytes & buffer size is 75 bytes.
No I'm not intending to use such an example, I just want to cover worst case :)
If that doesn't work, what about the case when you are always working in
powers of 2?
e.g data block is 16 bytes & buffer size is 1024 bytes.
libjack *always* allocates a buffer of size (2^x).
*but* 1 byte is reserved to discriminate between *empty* and *full*
state of the buffer, the usable size of ringbuffer thus is actually (2^x
- 1).
https://github.com/jackaudio/jack1/blob/master/libjack/ringbuffer.c#L32