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alsa: fix dll handling

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Pass the right value for the rate, we need to pass the graph rate.
Don't reduce bandwidth, it is not needed.

Fixes timings for reading the alsa-sequencer.
This commit is contained in:
Wim Taymans 2021-03-14 21:42:17 +01:00
parent f372de8608
commit b07bfd0661
1 changed files with 7 additions and 8 deletions
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15
spa/plugins/alsa/alsa-seq.c
View file

@ -710,7 +710,7 @@ static int update_time(struct seq_state *state, uint64_t nsec, bool follower)
if (state->dll.bw == 0.0) {
spa_dll_set_bw(&state->dll, SPA_DLL_BW_MAX, state->threshold,
state->rate.num / state->rate.denom);
state->rate.denom);
state->next_time = nsec;
state->base_time = nsec;
}
@ -718,10 +718,6 @@ static int update_time(struct seq_state *state, uint64_t nsec, bool follower)
if ((state->next_time - state->base_time) > BW_PERIOD) {
state->base_time = state->next_time;
if (state->dll.bw > SPA_DLL_BW_MIN)
spa_dll_set_bw(&state->dll, state->dll.bw / 2.0,
state->threshold, state->rate.num / state->rate.denom);
spa_log_debug(state->log, NAME" %p: follower:%d rate:%f bw:%f err:%f (%f %f %f)",
state, follower, corr, state->dll.bw, err,
state->dll.z1, state->dll.z2, state->dll.z3);
@ -738,8 +734,8 @@ static int update_time(struct seq_state *state, uint64_t nsec, bool follower)
state->clock->next_nsec = state->next_time;
}
spa_log_trace_fp(state->log, "now:%"PRIu64" queue:%"PRIu64" err:%f next:%"PRIu64" thr:%d",
nsec, queue_real, err, state->next_time, state->threshold);
spa_log_trace_fp(state->log, "now:%"PRIu64" queue:%"PRIu64" err:%f corr:%f next:%"PRIu64" thr:%d",
nsec, queue_real, err, corr, state->next_time, state->threshold);
return 0;
}
@ -852,8 +848,11 @@ int spa_alsa_seq_start(struct seq_state *state)
struct spa_io_clock *clock = &state->position->clock;
state->rate = clock->rate;
state->duration = clock->duration;
state->threshold = state->duration;
} else {
state->rate = SPA_FRACTION(1, 48000);
state->duration = 1024;
}
state->threshold = state->duration;
state->started = true;