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alsa: don't compensate for resampler delay

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Don't try to move closer to the read/write pointers in the ringbuffer
to compensate for the resampler delay. We might not have enough time
anymore to complete a cycle without xruns. The delay is properly
reported in the clock times and should also be reported on the port
latency eventually.
This commit is contained in:
Wim Taymans 2021-03-14 17:08:04 +01:00
parent 17fd38c3a5
commit 017900575c
1 changed files with 1 additions and 8 deletions
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9
spa/plugins/alsa/alsa-pcm.c
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@ -832,12 +832,6 @@ static int get_status(struct state *state, snd_pcm_uframes_t *delay, snd_pcm_ufr
if (state->resample && 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
* by moving a little closer to the device read/write pointers. */
if (*target <= state->delay)
*target -= SPA_MAX(0, (int)(*target - state->delay));
else
*target -= state->delay;
} else {
state->delay = 0;
state->read_size = state->threshold;
@ -845,8 +839,7 @@ static int get_status(struct state *state, snd_pcm_uframes_t *delay, snd_pcm_ufr
if (state->stream == SND_PCM_STREAM_PLAYBACK) {
*delay = state->buffer_frames - avail;
}
else {
} else {
*delay = avail;
*target = SPA_MAX(*target, state->read_size);
}