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alsa-seq: use dll to track queue timer

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Also increase timer resolution to get less jitter.
This commit is contained in:
Wim Taymans 2019-09-24 17:23:39 +02:00
parent 197d2b15b6
commit 387b281f5c
2 changed files with 89 additions and 11 deletions
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11
spa/plugins/alsa/alsa-seq.h
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@ -105,6 +105,11 @@ struct seq_conn {
struct spa_source source;
};
#define BW_MAX 0.128
#define BW_MED 0.064
#define BW_MIN 0.016
#define BW_PERIOD (3 * SPA_NSEC_PER_SEC)
struct seq_state {
struct spa_handle handle;
struct spa_node node;
@ -139,13 +144,19 @@ struct seq_state {
int timerfd;
uint64_t current_time;
uint64_t next_time;
uint64_t base_time;
uint64_t queue_time;
uint64_t queue_start;
unsigned int opened:1;
unsigned int started:1;
unsigned int slaved:1;
struct seq_stream streams[2];
double bw;
double z1, z2, z3;
double w0, w1, w2;
};
#define VALID_DIRECTION(this,d) ((d) == SPA_DIRECTION_INPUT || (d) == SPA_DIRECTION_OUTPUT)