mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-11-02 09:01:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

stream: tweak the timings and buffer attributes

Browse source 
Use tlength as the latency.
Round attributes to frame size
Only use the delay in get_time().
Tweak queued, writable and required bytes for callbacks.
This commit is contained in:
Wim Taymans 2020-09-24 17:28:30 +02:00
parent abf268d168
commit 9d694b7b38
1 changed files with 7 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

12
pipewire-pulseaudio/src/stream.c
View file

@ -215,26 +215,28 @@ static void patch_buffer_attr(pa_stream *s, pa_buffer_attr *attr, pa_stream_flag
stride = pa_frame_size(&s->sample_spec);
if (attr->maxlength == (uint32_t) -1 || attr->maxlength == 0)
attr->maxlength = MAX_SIZE; /* 4MB is the maximum queue length PulseAudio <= 0.9.9 supported. */
attr->maxlength -= attr->maxlength % stride;
attr->maxlength = SPA_MAX(attr->maxlength, stride);
if (attr->tlength == (uint32_t) -1 || attr->tlength == 0)
if (attr->tlength == (uint32_t) -1)
attr->tlength = (uint32_t) pa_usec_to_bytes(2*PA_USEC_PER_SEC, &s->sample_spec);
attr->tlength = SPA_MIN(attr->tlength, attr->maxlength);
attr->tlength -= attr->tlength % stride;
attr->tlength = SPA_MAX(attr->tlength, MIN_SAMPLES * stride * MIN_BUFFERS);
if (attr->minreq == (uint32_t) -1 || attr->minreq == 0)
if (attr->minreq == (uint32_t) -1)
attr->minreq = pa_usec_to_bytes(25*PA_USEC_PER_MSEC, &s->sample_spec);
attr->minreq = SPA_MIN(attr->minreq, attr->tlength / MIN_BUFFERS);
attr->minreq -= attr->minreq % stride;
attr->minreq = SPA_MAX(attr->minreq, stride);
if (attr->fragsize == (uint32_t) -1 || attr->fragsize == 0)
if (attr->fragsize == (uint32_t) -1)
attr->fragsize = pa_usec_to_bytes(25*PA_USEC_PER_MSEC, &s->sample_spec);
attr->fragsize = SPA_MIN(attr->fragsize, attr->tlength / MIN_BUFFERS);
attr->fragsize -= attr->fragsize % stride;
attr->fragsize = SPA_MAX(attr->fragsize, stride);
if (attr->prebuf == (uint32_t) -1 || attr->prebuf == 0)
if (attr->prebuf == (uint32_t) -1)
attr->prebuf = attr->tlength - attr->minreq;
attr->prebuf = SPA_MIN(attr->prebuf, attr->tlength - attr->minreq);
attr->prebuf -= attr->prebuf % stride;
@ -983,7 +985,7 @@ static int create_stream(pa_stream_direction_t direction,
if (monitor)
sprintf(latency, "%u/%u", s->buffer_attr.fragsize / stride, s->sample_spec.rate);
else
sprintf(latency, "%u/%u", s->buffer_attr.tlength / stride, s->sample_spec.rate);
sprintf(latency, "%u/%u", s->buffer_attr.tlength / 2 / stride, s->sample_spec.rate);
n_items = 0;
items[n_items++] = SPA_DICT_ITEM_INIT(PW_KEY_NODE_LATENCY, latency);
items[n_items++] = SPA_DICT_ITEM_INIT(PW_KEY_MEDIA_TYPE, "Audio");