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node: add active flag for rate match

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Add flags to the rate match io area
Add flag to activate/deactivate rate match
Set active flag in rate match when slaved
Update rate before starting resample
This commit is contained in:
Wim Taymans 2019-10-21 10:13:56 +02:00
parent f5b9862a89
commit 116676e149
3 changed files with 14 additions and 3 deletions
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6
spa/plugins/alsa/alsa-pcm.c
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@ -608,7 +608,7 @@ static int get_status(struct state *state, snd_pcm_uframes_t *delay, snd_pcm_ufr
*target = state->last_threshold;
if (state->rate_match) {
if (state->slaved && state->rate_match) {
state->delay = state->rate_match->delay;
state->read_size = state->rate_match->size;
/* We try to compensate for the latency introduced by rate matching
@ -672,11 +672,13 @@ static int update_time(struct state *state, uint64_t nsec, snd_pcm_sframes_t del
err, state->z1, state->z2, state->z3);
}
if (slave && state->rate_match) {
if (state->rate_match) {
if (state->stream == SND_PCM_STREAM_PLAYBACK)
state->rate_match->rate = SPA_CLAMP(corr, 0.95, 1.05);
else
state->rate_match->rate = SPA_CLAMP(1.0/corr, 0.95, 1.05);
SPA_FLAG_UPDATE(state->rate_match->flags, SPA_IO_RATE_MATCH_FLAG_ACTIVE, slave);
}
state->next_time += state->threshold / corr * 1e9 / state->rate;