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control: add control objects

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Add control objects for all controllable properties on ports.
Try to link compatible control properties in autolink.
Allocate shared memory for the output property memory and configure
the io area on the ports when the controls are linked.
Send the shared memfd to clients when the io area is configured.
Add port_set_io support in remote.c, mmap the control io area and
set on the port.
Add some param helpers
Add volume control to export-source update the volume before
sending each buffer.
This commit is contained in:
Wim Taymans 2017-11-30 16:36:29 +01:00
parent 91a3670610
commit 541553be1c
19 changed files with 577 additions and 34 deletions
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31
src/examples/export-source.c
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@ -101,7 +101,7 @@ struct data {
void *callbacks_data;
struct spa_io_buffers *io;
double *io_volume;
struct spa_pod_double *ctrl_volume;
uint8_t buffer[1024];
@ -112,8 +112,20 @@ struct data {
struct spa_list empty;
double accumulator;
double volume_accum;
};
static void update_volume(struct data *data)
{
if (data->ctrl_volume == NULL)
return;
data->ctrl_volume->value = (sin(data->volume_accum) / 2.0) + 0.5;
data->volume_accum += M_PI_M2 / 1000.0;
if (data->volume_accum >= M_PI_M2)
data->volume_accum -= M_PI_M2;
}
static int impl_send_command(struct spa_node *node, const struct spa_command *command)
{
return 0;
@ -158,10 +170,8 @@ static int impl_port_set_io(struct spa_node *node, enum spa_direction direction,
if (id == d->t->io.Buffers)
d->io = data;
else if (id == d->type.io_prop_volume) {
if (SPA_POD_TYPE(data) == SPA_POD_TYPE_ID)
d->io_volume = &SPA_POD_VALUE(struct spa_pod_double, data);
else
return -EINVAL;
d->ctrl_volume = data;
*d->ctrl_volume = SPA_POD_DOUBLE_INIT(1.0);
}
else
return -ENOENT;
@ -315,7 +325,7 @@ static int impl_port_enum_params(struct spa_node *node,
":", t->param_io.id, "I", d->type.io_prop_volume,
":", t->param_io.size, "i", sizeof(struct spa_pod_double),
":", t->param_io.propId, "I", d->type.prop_volume,
":", t->param_io.propType, "dr", p->volume, 2, 0.0, 10.0);
":", t->param_io.propType, "dru", p->volume, 2, 0.0, 10.0);
break;
default:
return 0;
@ -406,7 +416,7 @@ static int impl_port_use_buffers(struct spa_node *node, enum spa_direction direc
static inline void reuse_buffer(struct data *d, uint32_t id)
{
pw_log_trace("sine-source %p: recycle buffer %d", d, id);
pw_log_trace("export-source %p: recycle buffer %d", d, id);
spa_list_append(&d->empty, &d->buffers[id].link);
}
@ -433,7 +443,7 @@ static int impl_node_process_output(struct spa_node *node)
io->buffer_id = SPA_ID_INVALID;
}
if (spa_list_is_empty(&d->empty)) {
pw_log_error("sine-source %p: out of buffers", d);
pw_log_error("export-source %p: out of buffers", d);
return -EPIPE;
}
b = spa_list_first(&d->empty, struct buffer, link);
@ -474,6 +484,8 @@ static int impl_node_process_output(struct spa_node *node)
io->buffer_id = b->buffer->id;
io->status = SPA_STATUS_HAVE_BUFFER;
update_volume(d);
return SPA_STATUS_HAVE_BUFFER;
}
@ -500,7 +512,7 @@ static void make_node(struct data *data)
if (data->path)
pw_properties_set(props, PW_NODE_PROP_TARGET_NODE, data->path);
data->node = pw_node_new(data->core, "sine-source", props, 0);
data->node = pw_node_new(data->core, "export-source", props, 0);
data->impl_node = impl_node;
pw_node_set_implementation(data->node, &data->impl_node);
@ -551,7 +563,6 @@ int main(int argc, char *argv[])
spa_list_init(&data.empty);
init_type(&data.type, data.t->map);
reset_props(&data.props);
data.io_volume = &data.props.volume;
spa_debug_set_type_map(data.t->map);
pw_remote_add_listener(data.remote, &data.remote_listener, &remote_events, &data);