mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-02 09:01:46 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

alsa: Precompute maximum frames per block

Browse source 
frames_per_block is the mempool's maximum block size in frames

v2 (thanks David Henningson)
* rename max_frames to frames_per_block

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
This commit is contained in:
Peter Meerwald 2014-11-04 15:10:50 +01:00 • committed by Peter Meerwald
parent 101092465d
commit 8bbdae0ae8
2 changed files with 8 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/modules/alsa/alsa-source.c
View file

@ -116,6 +116,8 @@ struct userdata {
watermark_inc_threshold,
watermark_dec_threshold;
snd_pcm_uframes_t frames_per_block;
pa_usec_t watermark_dec_not_before;
pa_usec_t min_latency_ref;
pa_usec_t tsched_watermark_usec;
@ -576,8 +578,7 @@ static int mmap_read(struct userdata *u, pa_usec_t *sleep_usec, bool polled, boo
}
/* Make sure that if these memblocks need to be copied they will fit into one slot */
if (frames > pa_mempool_block_size_max(u->core->mempool)/u->frame_size)
frames = pa_mempool_block_size_max(u->core->mempool)/u->frame_size;
frames = PA_MIN(frames, u->frames_per_block);
if (!after_avail && frames == 0)
break;
@ -2033,6 +2034,7 @@ pa_source *pa_alsa_source_new(pa_module *m, pa_modargs *ma, const char*driver, p
pa_source_set_rtpoll(u->source, u->rtpoll);
u->frame_size = frame_size;
u->frames_per_block = pa_mempool_block_size_max(m->core->mempool) / frame_size;
u->fragment_size = frag_size = (size_t) (period_frames * frame_size);
u->hwbuf_size = buffer_size = (size_t) (buffer_frames * frame_size);
pa_cvolume_mute(&u->hardware_volume, u->source->sample_spec.channels);