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alsa: keep track of input and output latency

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track and report both input and output latency.
This commit is contained in:
Wim Taymans 2021-06-24 09:43:58 +02:00
parent ed9560fb03
commit 8cf5927e95
5 changed files with 49 additions and 13 deletions
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27
spa/plugins/alsa/alsa-pcm-source.c
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@ -457,7 +457,10 @@ impl_node_port_enum_params(void *object, int seq,
case SPA_PARAM_Latency:
switch (result.index) {
case 0:
param = spa_latency_build(&b, id, &this->latency);
param = spa_latency_build(&b, id, &this->latency[SPA_DIRECTION_INPUT]);
break;
case 1:
param = spa_latency_build(&b, id, &this->latency[SPA_DIRECTION_OUTPUT]);
break;
default:
return 0;
@ -561,8 +564,19 @@ impl_node_port_set_param(void *object,
res = port_set_format(this, direction, port_id, flags, param);
break;
case SPA_PARAM_Latency:
res = 0;
{
struct spa_latency_info info;
if ((res = spa_latency_parse(param, &info)) < 0)
return res;
if (direction == info.direction)
return -EINVAL;
this->latency[info.direction] = info;
this->port_info.change_mask |= SPA_PORT_CHANGE_MASK_PARAMS;
this->port_params[IDX_Latency].flags ^= SPA_PARAM_INFO_SERIAL;
emit_port_info(this, false);
break;
}
default:
res = -ENOENT;
break;
@ -792,9 +806,12 @@ impl_init(const struct spa_handle_factory *factory,
spa_hook_list_init(&this->hooks);
this->stream = SND_PCM_STREAM_CAPTURE;
this->latency = SPA_LATENCY_INFO(SPA_DIRECTION_OUTPUT);
this->latency.min_quantum = 1.0f;
this->latency.max_quantum = 1.0f;
this->port_direction = SPA_DIRECTION_OUTPUT;
this->latency[this->port_direction] = SPA_LATENCY_INFO(
this->port_direction,
.min_quantum = 1.0f,
.max_quantum = 1.0f);
this->latency[SPA_DIRECTION_INPUT] = SPA_LATENCY_INFO(SPA_DIRECTION_INPUT);
this->info_all = SPA_NODE_CHANGE_MASK_FLAGS |
SPA_NODE_CHANGE_MASK_PROPS |