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alsa: rework timing

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Use a DLL to track the hardware pointer and use this to set the
timer.
Handle XRUN and recover.
This commit is contained in:
Wim Taymans 2018-11-16 17:00:40 +01:00
parent 5444b850d2
commit 0343297257
4 changed files with 270 additions and 232 deletions
Download patch file Download diff file Expand all files Collapse all files

18
spa/plugins/alsa/alsa-sink.c
View file

@ -229,11 +229,11 @@ static int impl_node_send_command(struct spa_node *node, const struct spa_comman
if (this->n_buffers == 0)
return -EIO;
if ((res = spa_alsa_start(this, false)) < 0)
if ((res = spa_alsa_start(this)) < 0)
return res;
break;
case SPA_NODE_COMMAND_Pause:
if ((res = spa_alsa_pause(this, false)) < 0)
if ((res = spa_alsa_pause(this)) < 0)
return res;
break;
default:
@ -431,6 +431,13 @@ impl_node_port_enum_params(struct spa_node *node,
SPA_PARAM_IO_size, &SPA_POD_Int(sizeof(struct spa_io_clock)),
0);
break;
case 2:
param = spa_pod_builder_object(&b,
SPA_TYPE_OBJECT_ParamIO, id,
SPA_PARAM_IO_id, &SPA_POD_Id(SPA_IO_Notify),
SPA_PARAM_IO_size, &SPA_POD_Int(sizeof(struct spa_io_sequence) + 1024),
0);
break;
default:
return 0;
}
@ -467,7 +474,7 @@ static int port_set_format(struct spa_node *node,
if (format == NULL) {
spa_log_debug(this->log, "clear format");
spa_alsa_pause(this, false);
spa_alsa_pause(this);
clear_buffers(this);
spa_alsa_close(this);
this->have_format = false;
@ -535,7 +542,7 @@ impl_node_port_use_buffers(struct spa_node *node,
return -EIO;
if (n_buffers == 0) {
spa_alsa_pause(this, false);
spa_alsa_pause(this);
clear_buffers(this);
return 0;
}
@ -609,6 +616,9 @@ impl_node_port_set_io(struct spa_node *node,
case SPA_IO_Clock:
this->clock = data;
break;
case SPA_IO_Notify:
this->notify = data;
break;
default:
return -ENOENT;
}