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control: rework for spa_io_sequence

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Put a pw_control object on all ports that support control messages.
Allow linking of control objects (and thus ports).
Make export-sink generate control messages to update the contrast
property.
This commit is contained in:
Wim Taymans 2018-08-30 09:54:54 +02:00
parent 2631db14a8
commit 05d3502c84
7 changed files with 149 additions and 93 deletions
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58
src/examples/export-sink.c
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@ -24,7 +24,9 @@
#include <spa/param/video/format-utils.h>
#include <spa/param/props.h>
#include <spa/node/io.h>
#include <spa/control/control.h>
#include <spa/debug/format.h>
#include <spa/debug/pod.h>
#include <pipewire/pipewire.h>
#include <pipewire/module.h>
@ -74,7 +76,8 @@ struct data {
const struct spa_node_callbacks *callbacks;
void *callbacks_data;
struct spa_io_buffers *io;
struct spa_pod_double *ctrl_param;
struct spa_io_sequence *io_notify;
uint32_t io_notify_size;
double param_accum;
uint8_t buffer[1024];
@ -103,10 +106,17 @@ static void handle_events(struct data *data)
static void update_param(struct data *data)
{
if (data->ctrl_param == NULL)
struct spa_pod_builder b = { 0, };
if (data->io_notify == NULL)
return;
data->ctrl_param->value = (sin(data->param_accum) * 127.0) + 127.0;
spa_pod_builder_init(&b, data->io_notify, data->io_notify_size);
spa_pod_builder_sequence(&b, 0,
".", 0, SPA_CONTROL_Properties,
SPA_POD_OBJECT(SPA_TYPE_OBJECT_Props, 0,
":", SPA_PROP_contrast, "f", (sin(data->param_accum) * 127.0) + 127.0));
data->param_accum += M_PI_M2 / 30.0;
if (data->param_accum >= M_PI_M2)
data->param_accum -= M_PI_M2;
@ -154,19 +164,17 @@ static int impl_port_set_io(struct spa_node *node,
{
struct data *d = SPA_CONTAINER_OF(node, struct data, impl_node);
if (id == SPA_IO_Buffers)
switch (id) {
case SPA_IO_Buffers:
d->io = data;
#if 0
else if (id == d->type.io_prop_param) {
if (data && size >= sizeof(struct spa_pod_double))
d->ctrl_param = data;
else
d->ctrl_param = NULL;
}
#endif
else
break;
case SPA_IO_Notify:
d->io_notify = data;
d->io_notify_size = size;
break;
default:
return -ENOENT;
}
return 0;
}
@ -273,25 +281,25 @@ static int impl_port_enum_params(struct spa_node *node,
return 0;
}
break;
#if 0
else if (id == t->param_io.idPropsOut) {
struct props *p = &d->props;
case SPA_PARAM_IO:
switch (*index) {
case 0:
param = spa_pod_builder_object(builder,
id, t->param_io.Prop,
":", t->param_io.id, "I", d->type.io_prop_param,
":", t->param_io.size, "i", sizeof(struct spa_pod_double),
":", t->param.propId, "I", d->type.prop_param,
":", t->param.propType, "dru", p->param,
SPA_POD_PROP_MIN_MAX(0.0, 10.0));
SPA_TYPE_OBJECT_ParamIO, id,
":", SPA_PARAM_IO_id, "I", SPA_IO_Buffers,
":", SPA_PARAM_IO_size, "i", sizeof(struct spa_io_buffers));
break;
case 1:
param = spa_pod_builder_object(builder,
SPA_TYPE_OBJECT_ParamIO, id,
":", SPA_PARAM_IO_id, "I", SPA_IO_Notify,
":", SPA_PARAM_IO_size, "i", sizeof(struct spa_io_sequence) + 1024);
break;
default:
return 0;
}
}
#endif
break;
default:
return -ENOENT;
}