mirrors/pipewire
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pipewire/pipewire.git synced 2025-12-18 08:56:45 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

alsa: sync followers from the driver

Browse source 
Keep track or the follower state and do the sync from the driver
wakeup.

This improves sync between devices because the sync no longer
depends on when the node was woken up in the graph and scheduled. We
would have been able to handle this difference by using the htimestamp
but that doesn't seen to work reliably on some hardware.

This is also essential for the interrupt based scheduling.
This commit is contained in:
Wim Taymans 2023-09-18 14:53:15 +02:00
parent c51f6ccbd7
commit ee1bb2362d
2 changed files with 80 additions and 15 deletions
Download patch file Download diff file Expand all files Collapse all files

21
spa/plugins/alsa/alsa-pcm.h
View file

@ -82,6 +82,15 @@ struct card {
uint32_t rate;
};
struct rt_state {
struct spa_list followers;
struct state *driver;
struct spa_list driver_link;
unsigned int sources_added:1;
unsigned int following:1;
};
struct state {
struct spa_handle handle;
struct spa_node node;
@ -130,9 +139,9 @@ struct state {
uint32_t allowed_rates[MAX_RATES];
uint32_t n_allowed_rates;
struct channel_map default_pos;
unsigned int disable_mmap;
unsigned int disable_batch;
unsigned int disable_tsched;
unsigned int disable_mmap:1;
unsigned int disable_batch:1;
unsigned int disable_tsched:1;
char clock_name[64];
uint32_t quantum_limit;
@ -228,6 +237,12 @@ struct state {
double last_rate;
struct spa_list link;
struct spa_list followers;
struct state *driver;
struct spa_list driver_link;
struct rt_state rt;
};
struct spa_pod *spa_alsa_enum_propinfo(struct state *state,