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module-combine-stream: add latencyOffsetNsec prop

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Add latencyOffsetNsec prop to the combine node.

This is mainly useful for BAP device sets; the property appears in
Pulseaudio UI only when the node is associated with a device.
This commit is contained in:
Pauli Virtanen 2023-05-01 14:51:38 +03:00 • committed by Wim Taymans
parent be59d2b5d0
commit 7d4491ce6b
1 changed files with 57 additions and 1 deletions
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58
src/modules/module-combine-stream.c
View file

@ -254,6 +254,8 @@ struct impl {
struct spa_latency_info latency;
int64_t latency_offset;
struct spa_audio_info_raw info;
unsigned int do_disconnect:1;
@ -339,6 +341,12 @@ static enum pw_direction get_combine_direction(struct impl *impl)
return PW_DIRECTION_OUTPUT;
}
static void apply_latency_offset(struct spa_latency_info *latency, int64_t offset)
{
latency->min_ns += SPA_MAX(offset, -(int64_t)latency->min_ns);
latency->max_ns += SPA_MAX(offset, -(int64_t)latency->max_ns);
}
static void update_latency(struct impl *impl)
{
struct spa_latency_info latency;
@ -355,6 +363,8 @@ static void update_latency(struct impl *impl)
spa_latency_info_combine_finish(&latency);
apply_latency_offset(&latency, impl->latency_offset);
if (spa_latency_info_compare(&latency, &impl->latency) != 0) {
struct spa_pod_builder b = { 0 };
uint8_t buffer[1024];
@ -812,17 +822,55 @@ static void combine_output_process(void *d)
pw_stream_queue_buffer(impl->combine, out);
}
static void combine_param_changed(void *d, uint32_t id, const struct spa_pod *param)
{
struct impl *impl = d;
switch (id) {
case SPA_PARAM_Props: {
int64_t latency_offset;
uint8_t buffer[1024];
struct spa_pod_builder b;
const struct spa_pod *p;
if (!param)
latency_offset = 0;
else if (spa_pod_parse_object(param,
SPA_TYPE_OBJECT_Props, NULL,
SPA_PROP_latencyOffsetNsec, SPA_POD_Long(&latency_offset)) < 0)
break;
if (latency_offset == impl->latency_offset)
break;
impl->latency_offset = latency_offset;
spa_pod_builder_init(&b, buffer, sizeof(buffer));
p = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Props, SPA_PARAM_Props,
SPA_PROP_latencyOffsetNsec, SPA_POD_Long(impl->latency_offset));
pw_stream_update_params(impl->combine, &p, 1);
update_latency(impl);
break;
}
default:
break;
}
}
static const struct pw_stream_events combine_events = {
PW_VERSION_STREAM_EVENTS,
.destroy = combine_destroy,
.state_changed = combine_state_changed,
.param_changed = combine_param_changed,
};
static int create_combine(struct impl *impl)
{
int res;
uint32_t n_params;
const struct spa_pod *params[1];
const struct spa_pod *params[3];
uint8_t buffer[1024];
struct spa_pod_builder b;
enum pw_direction direction;
@ -857,6 +905,14 @@ static int create_combine(struct impl *impl)
spa_pod_builder_init(&b, buffer, sizeof(buffer));
params[n_params++] = spa_format_audio_raw_build(&b,
SPA_PARAM_EnumFormat, &impl->info);
params[n_params++] = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_PropInfo, SPA_PARAM_PropInfo,
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_latencyOffsetNsec),
SPA_PROP_INFO_description, SPA_POD_String("Latency offset (ns)"),
SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Long(0LL, INT64_MIN, INT64_MAX));
params[n_params++] = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Props, SPA_PARAM_Props,
SPA_PROP_latencyOffsetNsec, SPA_POD_Long(impl->latency_offset));
if ((res = pw_stream_connect(impl->combine,
direction, PW_ID_ANY, flags, params, n_params)) < 0)