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milan-avb: stream: wire Milan Section 5.4.5 stream counters, TX heartbeat, and MAX_TRANSIT_TIME plumbing

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hackerman-kl 2026-04-26 16:19:29 +02:00 • committed by Wim Taymans
parent 16d793db38
commit 9c0007173b
11 changed files with 487 additions and 46 deletions
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14
src/modules/module-avb/es-builder.c
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@ -4,6 +4,7 @@
#include "es-builder.h"
#include "aecp-aem.h"
#include "aecp-aem-state.h"
#include "utils.h"
@ -28,9 +29,11 @@ static struct descriptor *es_buidler_desc_stream_general_prepare(struct server *
struct descriptor *desc;
struct stream *stream;
enum spa_direction direction;
uint64_t out_mtt_ns = 0;
if (type == AVB_AEM_DESC_STREAM_INPUT) {
struct aecp_aem_stream_input_state_milan_v12 *w;
const struct avb_aem_desc_stream *body = ptr;
desc = server_add_descriptor(server, type, index,
sizeof(*w), size, ptr);
@ -42,6 +45,12 @@ static struct descriptor *es_buidler_desc_stream_general_prepare(struct server *
w = desc->ptr;
/* Milan v1.2 Section 5.3.8.7: started/stopped state defaults to started. */
w->stream_in_sta.started = true;
struct avb_aem_stream_format_info fi;
avb_aem_stream_format_decode(body->current_format, &fi);
if (fi.kind == AVB_AEM_STREAM_FORMAT_KIND_CRF)
return desc;
stream = &w->stream_in_sta.common.stream;
direction = SPA_DIRECTION_INPUT;
} else if (type == AVB_AEM_DESC_STREAM_OUTPUT) {
@ -57,6 +66,8 @@ static struct descriptor *es_buidler_desc_stream_general_prepare(struct server *
w = desc->ptr;
/* Milan v1.2 Section 5.3.7.6: default presentation time offset is 2 ms. */
w->stream_out_sta.presentation_time_offset_ns = 2000000;
w->stream_out_sta.max_transit_time_ns = 2000000;
out_mtt_ns = w->stream_out_sta.max_transit_time_ns;
stream = &w->stream_out_sta.common.stream;
direction = SPA_DIRECTION_OUTPUT;
} else {
@ -69,6 +80,9 @@ static struct descriptor *es_buidler_desc_stream_general_prepare(struct server *
return NULL;
}
if (direction == SPA_DIRECTION_OUTPUT)
stream->mtt = (int)out_mtt_ns;
return desc;
}