spa: do not use SPA_PROP_live

Remove support for changing `SPA_PROP_live` in node implementations
that supported it, and hard-code `SPA_PROP_live = true`. If a mode
of operation is desired where the data is processed as fast as possible,
it can be achieved by implementing non-driver operation and using the
freewheel driver in pipewire.
This commit is contained in:
Barnabás Pőcze 2026-03-27 11:22:24 +01:00
parent 00b4717c6e
commit 7f4baba41c
5 changed files with 73 additions and 316 deletions

View file

@ -41,13 +41,11 @@ enum wave_type {
#define DEFAULT_RATE 48000
#define DEFAULT_CHANNELS 2
#define DEFAULT_LIVE true
#define DEFAULT_WAVE WAVE_SINE
#define DEFAULT_FREQ 440.0
#define DEFAULT_VOLUME 1.0
struct props {
bool live;
uint32_t wave;
float freq;
float volume;
@ -55,7 +53,6 @@ struct props {
static void reset_props(struct props *props)
{
props->live = DEFAULT_LIVE;
props->wave = DEFAULT_WAVE;
props->freq = DEFAULT_FREQ;
props->volume = DEFAULT_VOLUME;
@ -160,13 +157,6 @@ static int impl_node_enum_params(void *object, int seq,
switch (result.index) {
case 0:
param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_PropInfo, id,
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_live),
SPA_PROP_INFO_description, SPA_POD_String("Configure live mode of the source"),
SPA_PROP_INFO_type, SPA_POD_Bool(p->live));
break;
case 1:
spa_pod_builder_push_object(&b, &f[0], SPA_TYPE_OBJECT_PropInfo, id);
spa_pod_builder_add(&b,
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_waveType),
@ -182,14 +172,14 @@ static int impl_node_enum_params(void *object, int seq,
spa_pod_builder_pop(&b, &f[1]);
param = spa_pod_builder_pop(&b, &f[0]);
break;
case 2:
case 1:
param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_PropInfo, id,
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_frequency),
SPA_PROP_INFO_description, SPA_POD_String("Select the frequency"),
SPA_PROP_INFO_type, SPA_POD_CHOICE_RANGE_Float(p->freq, 0.0, 50000000.0));
break;
case 3:
case 2:
param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_PropInfo, id,
SPA_PROP_INFO_id, SPA_POD_Id(SPA_PROP_volume),
@ -209,7 +199,6 @@ static int impl_node_enum_params(void *object, int seq,
case 0:
param = spa_pod_builder_add_object(&b,
SPA_TYPE_OBJECT_Props, id,
SPA_PROP_live, SPA_POD_Bool(p->live),
SPA_PROP_waveType, SPA_POD_Int(p->wave),
SPA_PROP_frequency, SPA_POD_Float(p->freq),
SPA_PROP_volume, SPA_POD_Float(p->volume));
@ -263,7 +252,6 @@ static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
if (id == SPA_PARAM_Props) {
struct props *p = &this->props;
struct port *port = &this->port;
if (param == NULL) {
reset_props(p);
@ -271,15 +259,9 @@ static int impl_node_set_param(void *object, uint32_t id, uint32_t flags,
}
spa_pod_parse_object(param,
SPA_TYPE_OBJECT_Props, NULL,
SPA_PROP_live, SPA_POD_OPT_Bool(&p->live),
SPA_PROP_waveType, SPA_POD_OPT_Int(&p->wave),
SPA_PROP_frequency, SPA_POD_OPT_Float(&p->freq),
SPA_PROP_volume, SPA_POD_OPT_Float(&p->volume));
if (p->live)
port->info.flags |= SPA_PORT_FLAG_LIVE;
else
port->info.flags &= ~SPA_PORT_FLAG_LIVE;
}
else
return -ENOENT;
@ -314,23 +296,15 @@ static int impl_node_set_io(void *object, uint32_t id, void *data, size_t size)
static void set_timer(struct impl *this, bool enabled)
{
if (this->props.live) {
struct itimerspec ts = {0};
struct itimerspec ts = {0};
if (enabled) {
if (this->props.live) {
uint64_t next_time = this->start_time + this->elapsed_time;
ts.it_value.tv_sec = next_time / SPA_NSEC_PER_SEC;
ts.it_value.tv_nsec = next_time % SPA_NSEC_PER_SEC;
} else {
ts.it_value.tv_sec = 0;
ts.it_value.tv_nsec = 1;
}
}
spa_system_timerfd_settime(this->data_system,
this->timer_source.fd, SPA_FD_TIMER_ABSTIME, &ts, NULL);
if (enabled) {
uint64_t next_time = this->start_time + this->elapsed_time;
ts.it_value.tv_sec = next_time / SPA_NSEC_PER_SEC;
ts.it_value.tv_nsec = next_time % SPA_NSEC_PER_SEC;
}
spa_system_timerfd_settime(this->data_system, this->timer_source.fd, SPA_FD_TIMER_ABSTIME, &ts, NULL);
}
static int read_timer(struct impl *this)
@ -338,14 +312,12 @@ static int read_timer(struct impl *this)
uint64_t expirations;
int res = 0;
if (this->props.live) {
if ((res = spa_system_timerfd_read(this->data_system,
this->timer_source.fd, &expirations)) < 0) {
if (res != -EAGAIN)
spa_log_error(this->log, "%p: timerfd error: %s",
this, spa_strerror(res));
}
if ((res = spa_system_timerfd_read(this->data_system, this->timer_source.fd, &expirations)) < 0) {
if (res != -EAGAIN)
spa_log_error(this->log, "%p: timerfd error: %s",
this, spa_strerror(res));
}
return 0;
}
@ -469,10 +441,7 @@ static int impl_node_send_command(void *object, const struct spa_command *comman
return 0;
clock_gettime(CLOCK_MONOTONIC, &now);
if (this->props.live)
this->start_time = SPA_TIMESPEC_TO_NSEC(&now);
else
this->start_time = 0;
this->start_time = SPA_TIMESPEC_TO_NSEC(&now);
this->sample_count = 0;
this->elapsed_time = 0;
@ -893,9 +862,6 @@ static inline void reuse_buffer(struct impl *this, struct port *port, uint32_t i
b->outstanding = false;
spa_list_append(&port->empty, &b->link);
if (!this->props.live && !this->following)
set_timer(this, true);
}
static int impl_node_port_reuse_buffer(void *object, uint32_t port_id, uint32_t buffer_id)
@ -969,7 +935,7 @@ static int impl_node_process(void *object)
io->buffer_id = SPA_ID_INVALID;
}
if (!this->props.live || this->following)
if (this->following)
return make_buffer(this);
else
return SPA_STATUS_OK;
@ -1111,9 +1077,7 @@ impl_init(const struct spa_handle_factory *factory,
port->info_all = SPA_PORT_CHANGE_MASK_FLAGS |
SPA_PORT_CHANGE_MASK_PARAMS;
port->info = SPA_PORT_INFO_INIT();
port->info.flags = SPA_PORT_FLAG_NO_REF;
if (this->props.live)
port->info.flags |= SPA_PORT_FLAG_LIVE;
port->info.flags = SPA_PORT_FLAG_NO_REF | SPA_PORT_FLAG_LIVE;
port->params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumFormat, SPA_PARAM_INFO_READ);
port->params[1] = SPA_PARAM_INFO(SPA_PARAM_Meta, SPA_PARAM_INFO_READ);
port->params[2] = SPA_PARAM_INFO(SPA_PARAM_IO, SPA_PARAM_INFO_READ);