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modules: update latency handling in example filter

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This commit is contained in:
Wim Taymans 2025-06-10 16:07:34 +02:00
parent b6b61a956f
commit a2f2bded0b
2 changed files with 34 additions and 13 deletions
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46
src/modules/module-example-filter.c
View file

@ -140,13 +140,14 @@ struct impl {
struct pw_stream *capture;
struct spa_hook capture_listener;
struct spa_audio_info_raw capture_info;
struct spa_latency_info capture_latency;
struct pw_properties *playback_props;
struct pw_stream *playback;
struct spa_hook playback_listener;
struct spa_audio_info_raw playback_info;
struct spa_latency_info playback_latency;
struct spa_latency_info latency[2];
struct spa_process_latency_info process_latency;
unsigned int do_disconnect:1;
};
@ -236,22 +237,43 @@ static void playback_process(void *d)
pw_stream_queue_buffer(impl->playback, out);
}
static void param_latency_changed(struct impl *impl, const struct spa_pod *param,
struct spa_latency_info *info, struct pw_stream *other)
static void update_latencies(struct impl *impl)
{
struct spa_latency_info latency;
uint8_t buffer[1024];
struct spa_pod_builder b;
const struct spa_pod *params[1];
const struct spa_pod *play_params[2], *capt_params[2];
uint32_t n_params = 0;
spa_pod_builder_init(&b, buffer, sizeof(buffer));
latency = impl->latency[SPA_DIRECTION_INPUT];
play_params[n_params] = spa_latency_build(&b, SPA_PARAM_Latency, &latency);
spa_process_latency_info_add(&impl->process_latency, &latency);
capt_params[n_params++] = spa_latency_build(&b, SPA_PARAM_Latency, &latency);
latency = impl->latency[SPA_DIRECTION_OUTPUT];
capt_params[n_params] = spa_latency_build(&b, SPA_PARAM_Latency, &latency);
spa_process_latency_info_add(&impl->process_latency, &latency);
play_params[n_params++] = spa_latency_build(&b, SPA_PARAM_Latency, &latency);
if (impl->playback)
pw_stream_update_params(impl->playback, play_params, n_params);
if (impl->capture)
pw_stream_update_params(impl->capture, capt_params, n_params);
}
static void param_latency_changed(struct impl *impl, const struct spa_pod *param)
{
struct spa_latency_info latency;
if (param == NULL || spa_latency_parse(param, &latency) < 0)
return;
if (spa_latency_info_compare(&impl->latency[latency.direction], &latency) == 0)
return;
*info = latency;
spa_pod_builder_init(&b, buffer, sizeof(buffer));
params[0] = spa_latency_build(&b, SPA_PARAM_Latency, &latency);
pw_stream_update_params(other, params, 1);
impl->latency[latency.direction] = latency;
update_latencies(impl);
}
static void stream_state_changed(void *data, enum pw_stream_state old,
@ -294,7 +316,7 @@ static void capture_param_changed(void *data, uint32_t id, const struct spa_pod
break;
}
case SPA_PARAM_Latency:
param_latency_changed(impl, param, &impl->capture_latency, impl->playback);
param_latency_changed(impl, param);
break;
}
}
@ -320,7 +342,7 @@ static void playback_param_changed(void *data, uint32_t id, const struct spa_pod
switch (id) {
case SPA_PARAM_Latency:
param_latency_changed(impl, param, &impl->playback_latency, impl->capture);
param_latency_changed(impl, param);
break;
}
}

1
src/modules/module-loopback.c
View file

@ -483,7 +483,6 @@ static void update_latencies(struct impl *impl, bool props, bool process)
pw_stream_update_params(impl->capture, capt_params, n_params);
}
static void param_latency_changed(struct impl *impl, const struct spa_pod *param)
{
struct spa_latency_info latency;