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0c1c3d2b99
Very long latency occurs for audio inputs when simulating an Intel HDA device. Patch courtesy of Volker Rümeling. https://lists.gnu.org/archive/html/qemu-devel/2015-09/msg03336.html
35 lines
1.2 KiB
Diff
35 lines
1.2 KiB
Diff
diff --git a/audio/paaudio.c b/audio/paaudio.c
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index fea6071..c1169d4 100644
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--- a/audio/paaudio.c
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+++ b/audio/paaudio.c
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@@ -608,6 +608,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
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{
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int error;
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pa_sample_spec ss;
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+ pa_buffer_attr ba;
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struct audsettings obt_as = *as;
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PAVoiceIn *pa = (PAVoiceIn *) hw;
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paaudio *g = pa->g = drv_opaque;
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@@ -616,6 +617,12 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
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ss.channels = as->nchannels;
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ss.rate = as->freq;
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+ ba.fragsize = pa_frame_size (&ss) * g->conf.samples;
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+ ba.maxlength = 5 * ba.fragsize;
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+ ba.tlength = -1;
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+ ba.prebuf = -1;
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+ ba.minreq = -1;
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+
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obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
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pa->stream = qpa_simple_new (
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@@ -625,7 +632,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
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g->conf.source,
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&ss,
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NULL, /* channel map */
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- NULL, /* buffering attributes */
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+ &ba, /* buffering attributes */
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&error
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);
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if (!pa->stream) {
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