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bluez5: ensure capture target latency is uniform for an ISO group

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All BAP client sources in the ISO group should use same target latency,
so that capture streams stay in sync.
This commit is contained in:
Pauli Virtanen 2025-07-12 13:40:54 +03:00 • committed by Wim Taymans
parent 396d37594c
commit 7e04f8fe44
4 changed files with 60 additions and 11 deletions
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18
spa/plugins/bluez5/decode-buffer.h
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@ -221,7 +221,7 @@ static inline void spa_bt_decode_buffer_set_max_extra_latency(struct spa_bt_deco
this->max_extra = samples;
}
static inline int32_t spa_bt_decode_buffer_get_target_latency(struct spa_bt_decode_buffer *this)
static inline int32_t spa_bt_decode_buffer_get_auto_latency(struct spa_bt_decode_buffer *this)
{
const int32_t duration = this->duration;
const int32_t packet_size = SPA_CLAMP(this->packet_size.max, 0, INT32_MAX/8);
@ -229,16 +229,20 @@ static inline int32_t spa_bt_decode_buffer_get_target_latency(struct spa_bt_deco
const int32_t spike = SPA_CLAMP(this->spike.max, 0, max_buf);
int32_t target;
if (this->target)
target = this->target;
else
target = SPA_CLAMP(SPA_ROUND_UP(SPA_MAX(spike * 3/2, duration),
SPA_CLAMP((int)this->rate / 50, 1, INT32_MAX)),
duration, max_buf - 2*packet_size);
target = SPA_CLAMP(SPA_ROUND_UP(SPA_MAX(spike * 3/2, duration),
SPA_CLAMP((int)this->rate / 50, 1, INT32_MAX)),
duration, max_buf - 2*packet_size);
return SPA_MIN(target, duration + SPA_CLAMP(this->max_extra, 0, INT32_MAX - duration));
}
static inline int32_t spa_bt_decode_buffer_get_target_latency(struct spa_bt_decode_buffer *this)
{
if (this->target)
return this->target;
return spa_bt_decode_buffer_get_auto_latency(this);
}
static inline void spa_bt_decode_buffer_process(struct spa_bt_decode_buffer *this, uint32_t samples, uint32_t duration,
double rate_diff, uint64_t next_nsec)
{