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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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27
spa/plugins/bluez5/iso-io.c
View file

@ -21,6 +21,7 @@
#include "media-codecs.h"
#include "defs.h"
#include "decode-buffer.h"
SPA_LOG_TOPIC_DEFINE_STATIC(log_topic, "spa.bluez5.iso");
#undef SPA_LOG_TOPIC_DEFAULT
@ -62,6 +63,8 @@ struct stream {
uint32_t block_size;
struct spa_bt_latency tx_latency;
struct spa_bt_decode_buffer *source_buf;
};
struct modify_info
@ -593,3 +596,27 @@ int spa_bt_iso_io_recv_errqueue(struct spa_bt_iso_io *this)
return spa_bt_latency_recv_errqueue(&stream->tx_latency, stream->fd, group->log);
}
/** Must be called from data thread */
void spa_bt_iso_io_set_source_buffer(struct spa_bt_iso_io *this, struct spa_bt_decode_buffer *buffer)
{
struct stream *stream = SPA_CONTAINER_OF(this, struct stream, this);
stream->source_buf = buffer;
}
/** Must be called from data thread */
void spa_bt_iso_io_update_source_latency(struct spa_bt_iso_io *this)
{
struct stream *stream = SPA_CONTAINER_OF(this, struct stream, this);
struct group *group = stream->group;
struct stream *s;
int32_t latency = 0;
spa_list_for_each(s, &group->streams, link)
if (s->source_buf)
latency = SPA_MAX(latency, spa_bt_decode_buffer_get_auto_latency(s->source_buf));
if (stream->source_buf)
spa_bt_decode_buffer_set_target_latency(stream->source_buf, latency);
}