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Improve rate matching and clock slaving

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Use a new rate_match io area to exhange rate matching info between
sink/source and resampler.
Compensate for the rate match delay when scheduling timeouts.
Let the resampler notify the source of how many samples it needs to
produce the desired quantum. Make sure we keep an extra buffer in
the device to be able to make this possible.
Let the adapter directly call the slave node process function.
This commit is contained in:
Wim Taymans 2019-07-09 16:56:05 +02:00
parent 595dc0ab5b
commit c7d7058896
10 changed files with 147 additions and 98 deletions
Download patch file Download diff file Expand all files Collapse all files

9
spa/plugins/alsa/alsa-source.c
View file

@ -408,6 +408,12 @@ impl_node_port_enum_params(void *object, int seq,
SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_Clock),
SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_clock)));
break;
case 2:
param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_ParamIO, id,
SPA_PARAM_IO_id, SPA_POD_Id(SPA_IO_RateMatch),
SPA_PARAM_IO_size, SPA_POD_Int(sizeof(struct spa_io_rate_match)));
break;
default:
return 0;
}
@ -601,6 +607,9 @@ impl_node_port_set_io(void *object,
case SPA_IO_Clock:
this->clock = data;
break;
case SPA_IO_RateMatch:
this->rate_match = data;
break;
default:
return -ENOENT;
}