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echo-cancel: Fix assert with webrtc's built-in drift compensation

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The webrtc canceller seems to have changed to require that the
set_stream_drift_samples() method be called before every call of
ProcessStream().

So we now call ec->set_stream_drift_samples() before calling
ec->record() by:

1. Always calling do_push_drift_comp() instead of only when the sink is
   running

2. Calling set_stream_drift_samples() in the loop with record() instead
   of outside

We do kind of leak this quirk of the webrtc canceller into the generic
bits of module-echo-cancel, but this should not be harmful in the
general case either.
This commit is contained in:
Arun Raghavan 2017-03-13 16:00:41 +05:30
parent 2530eb8d1b
commit 2de5fc222e
1 changed files with 3 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

8
src/modules/echo-cancel/module-echo-cancel.c
View file

@ -731,9 +731,6 @@ static void do_push_drift_comp(struct userdata *u) {
u->sink_rem = plen % u->sink_blocksize;
u->source_rem = rlen % u->source_output_blocksize;
/* Now let the canceller work its drift compensation magic */
u->ec->set_drift(u->ec, drift);
if (u->save_aec) {
if (u->drift_file)
fprintf(u->drift_file, "d %a\n", drift);
@ -773,6 +770,7 @@ static void do_push_drift_comp(struct userdata *u) {
cchunk.memblock = pa_memblock_new(u->source->core->mempool, cchunk.length);
cdata = pa_memblock_acquire(cchunk.memblock);
u->ec->set_drift(u->ec, drift);
u->ec->record(u->ec, rdata, cdata);
if (u->save_aec) {
@ -941,8 +939,8 @@ static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk)
u->sink_skip -= to_skip;
}
/* process and push out samples, do drift compensation only if the sink is actually running */
if (u->ec->params.drift_compensation && u->sink->thread_info.state == PA_SINK_RUNNING)
/* process and push out samples */
if (u->ec->params.drift_compensation)
do_push_drift_comp(u);
else
do_push(u);