sdr
/
gr-gsm
8
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Changes in fn_time

This commit is contained in:
Piotr Krysik 2017-09-27 21:59:19 +02:00
parent d3c95c9190
commit eb62dc1735
1 changed files with 15 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
python/misc_utils/fn_time.py
View File

@ -44,7 +44,14 @@ def fnmod_delta(fn1, fn2):
delta = delta + __hyper_frame
return delta
def fn_time_diff_delta(fn_x, fn_ref, time_diff_hint=0):
frames_diff = int(round(time_diff_hint/__frame_period))
fn_ref_hint = (fn_ref + frames_diff)
fn_delta = fnmod_delta(fn_x,fn_ref_hint)+frames_diff
return fn_delta
#fn_time_delta computes difference between reference frame number and a second frame number. It also computes timestamp of the second frame number. The full list of parameters is following:
#* fn_ref - reference frame number modulo __hyper_frame
#* time_ref - precise timestamp of the first sample in the frame fn_ref
@ -59,13 +66,11 @@ def fn_time_delta(fn_ref, time_ref, fn_x, time_hint=None, ts_num=None):
if ts_num is None:
ts_num = 0
time_diff = time_hint-time_ref
frames_diff = int(round(time_diff/__frame_period))
fn_ref = (fn_ref + frames_diff)
fn_delta = fnmod_delta(fn_x,fn_ref)+frames_diff
time2_precise = fn_delta*__frame_period+time_ref+ts_num*__ts_period
time_diff_hint = time_hint-time_ref
fn_delta = fn_time_diff_delta(fn_x,fn_ref, time_diff_hint)
time_x_precise = fn_delta*__frame_period+time_ref+ts_num*__ts_period
return fn_delta, time2_precise
return fn_delta, time_x_precise
if __name__ == "__main__":
@ -77,8 +82,8 @@ if __name__ == "__main__":
time2_err = time2+error
fn_delta, time2_precise = fn_time_delta(fn1, time1, fn2, time2_err)
if fn_delta != fn2-fn1:
print "dupa:", fn2, error#, 'fn_delta:'+str(fn_delta), time2, error, frames_diff_h4, (time2-time1)/(__hyper_frame*__frame_period), time_diff_h4_prev, time_diff
time_diff = time2 - time2_precise
if time_diff > 0.1:
print "dupa:", fn2, error#, 'fn_delta:'+str(fn_delta), time2, error, frames_diff_h4, (time2-time1)/(__hyper_frame*__frame_period), time_diff_hint_h4_prev, time_diff_hint
time_diff_hint = time2 - time2_precise
if time_diff_hint > 0.1:
print "dupa"