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audio/paaudio: fix microphone input being unusable

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The current code does not specify the metrics of the buffers for the
input device. This makes PulseAudio choose very bad defaults, which
causes input to be unusable: Audio put in gets out 30 seconds later.
This patch fixes that and makes the latency configurable as well.

Signed-off-by: Martin Schrodt <martin@schrodt.org>
Message-id: 20190315084653.120020-4-martin@schrodt.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Martin Schrodt 2019-03-15 09:46:53 +01:00 committed by Gerd Hoffmann
parent f614277765
commit ade103011c
1 changed files with 7 additions and 1 deletions
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8
audio/paaudio.c
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@ -605,6 +605,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
{
int error;
pa_sample_spec ss;
pa_buffer_attr ba;
struct audsettings obt_as = *as;
PAVoiceIn *pa = (PAVoiceIn *) hw;
paaudio *g = pa->g = drv_opaque;
@ -615,6 +616,11 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
ss.channels = as->nchannels;
ss.rate = as->freq;
ba.fragsize = pa_usec_to_bytes(ppdo->latency, &ss);
ba.maxlength = -1;
ba.minreq = -1;
ba.prebuf = -1;
obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
pa->stream = qpa_simple_new (
@ -624,7 +630,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
ppdo->has_name ? ppdo->name : NULL,
&ss,
NULL, /* channel map */
NULL, /* buffering attributes */
&ba, /* buffering attributes */
&error
);
if (!pa->stream) {