mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-10-29 05:40:27 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

alsa-pcm: use headroom to calculate minimum available frames for non time scheduling

Browse source 
Alsa needs to call handler soon enough to have headroom plus threshold
frames in the buffer and not only threshold left.

Signed-off-by: Martin Geier <martin.geier@streamunlimited.com>
This commit is contained in:
Martin Geier 2024-03-27 11:56:12 +01:00 • committed by Wim Taymans
parent b4ed8dcf14
commit 1e6dad14d3
1 changed files with 4 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

7
spa/plugins/alsa/alsa-pcm.c
View file

@ -2336,14 +2336,15 @@ static int set_swparams(struct state *state)
CHECK(snd_pcm_sw_params_set_start_threshold(hndl, params, LONG_MAX), "set_start_threshold");
if (state->disable_tsched) {
snd_pcm_uframes_t avail_min;
snd_pcm_uframes_t avail_min = 0;
if (state->stream == SND_PCM_STREAM_PLAYBACK) {
/* wake up when buffer has target frames or less data (will underrun soon) */
avail_min = state->buffer_frames - state->threshold;
if (state->buffer_frames >= (state->threshold + state->headroom))
avail_min = state->buffer_frames - (state->threshold + state->headroom);
} else {
/* wake up when there's target frames or more (enough for us to read and push a buffer) */
avail_min = state->threshold;
avail_min = SPA_MIN(state->threshold + state->headroom, state->buffer_frames);
}
CHECK(snd_pcm_sw_params_set_avail_min(hndl, params, avail_min), "set_avail_min");