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Param: add process latency param and info

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This commit is contained in:
Wim Taymans 2021-06-22 16:10:13 +02:00
parent 8c77713a7b
commit 79866a93cd
7 changed files with 97 additions and 4 deletions
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15
src/examples/audio-dsp-filter.c
View file

@ -27,6 +27,9 @@
#include <math.h>
#include <signal.h>
#include <spa/pod/builder.h>
#include <spa/param/latency-utils.h>
#include <pipewire/pipewire.h>
#include <pipewire/filter.h>
@ -87,6 +90,9 @@ static void do_quit(void *userdata, int signal_number)
int main(int argc, char *argv[])
{
struct data data = { 0, };
const struct spa_pod *params[1];
uint8_t buffer[1024];
struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
pw_init(&argc, &argv);
@ -138,11 +144,18 @@ int main(int argc, char *argv[])
NULL),
NULL, 0);
params[0] = spa_process_latency_build(&b,
SPA_PARAM_ProcessLatency,
&SPA_PROCESS_LATENCY_INFO_INIT(
.ns = 10 * SPA_NSEC_PER_MSEC
));
/* Now connect this filter. We ask that our process function is
* called in a realtime thread. */
if (pw_filter_connect(data.filter,
PW_FILTER_FLAG_RT_PROCESS,
NULL, 0) < 0) {
params, 1) < 0) {
fprintf(stderr, "can't connect\n");
return -1;
}

15
src/pipewire/filter.c
View file

@ -147,10 +147,13 @@ struct filter {
uint32_t change_mask_all;
struct spa_node_info info;
struct spa_list param_list;
#define IDX_Props 0
#define N_NODE_PARAMS 1
#define IDX_Props 0
#define IDX_ProcessLatency 1
#define N_NODE_PARAMS 2
struct spa_param_info params[N_NODE_PARAMS];
struct spa_process_latency_info process_latency;
struct data data;
uintptr_t seq;
struct pw_time time;
@ -173,6 +176,8 @@ static int get_param_index(uint32_t id)
switch (id) {
case SPA_PARAM_Props:
return IDX_Props;
case SPA_PARAM_ProcessLatency:
return IDX_ProcessLatency;
default:
return -1;
}
@ -236,6 +241,8 @@ static struct param *add_param(struct filter *impl, struct port *port,
}
}
}
if (id == SPA_PARAM_ProcessLatency && port == NULL)
spa_process_latency_parse(param, &impl->process_latency);
p->id = id;
p->flags = flags;
@ -732,6 +739,9 @@ static int default_latency(struct filter *impl, struct port *port, enum spa_dire
continue;
spa_latency_info_combine(&info, &p->latency[direction]);
}
spa_process_latency_info_add(&impl->process_latency, &info);
spa_list_for_each(p, &impl->port_list, link) {
uint8_t buffer[4096];
struct spa_pod_builder b;
@ -1431,6 +1441,7 @@ pw_filter_connect(struct pw_filter *filter,
impl->info.flags = impl->process_rt ? SPA_NODE_FLAG_RT : 0;
impl->info.props = &filter->properties->dict;
impl->params[IDX_Props] = SPA_PARAM_INFO(SPA_PARAM_Props, SPA_PARAM_INFO_WRITE);
impl->params[IDX_ProcessLatency] = SPA_PARAM_INFO(SPA_PARAM_ProcessLatency, SPA_PARAM_INFO_WRITE);
impl->info.params = impl->params;
impl->info.n_params = N_NODE_PARAMS;
impl->info.change_mask = impl->change_mask_all;