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node: implement activation

Browse source 
Make an eventfd for each node and listen for events when the node
is activated.
Reorganize some graphs links to make it possible to activiate nodes
by signaling the eventfd
Pass the peer node to each remote node and let the remote node
directly activate the peer when needed.
Let each node signal the driver node when finished.
With this we don't need to go through the daemon to schedule the
graph, nodes will simply activate eachother. We only go to the
server when there is a server node to schedule.
Keep stats about the state of each node and the time it was
triggered, running and finished.
This commit is contained in:
Wim Taymans 2019-02-12 17:42:33 +01:00
parent f45e0b8966
commit 5de7898808
15 changed files with 470 additions and 173 deletions
Download patch file Download diff file Expand all files Collapse all files

2
spa/plugins/alsa/alsa-source.c
View file

@ -671,7 +671,7 @@ static int impl_node_process(struct spa_node *node)
}
if (spa_list_is_empty(&this->ready))
return -EPIPE;
return SPA_STATUS_OK;
b = spa_list_first(&this->ready, struct buffer, link);
spa_list_remove(&b->link);

11
spa/plugins/alsa/alsa-utils.c
View file

@ -782,6 +782,7 @@ push_frames(struct state *state,
struct buffer *b;
struct spa_data *d;
uint32_t index, offs, avail, l0, l1;
struct spa_io_buffers *io;
b = spa_list_first(&state->free, struct buffer, link);
spa_list_remove(&b->link);
@ -814,7 +815,15 @@ push_frames(struct state *state,
d[0].chunk->stride = state->frame_size;
SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUT);
spa_list_append(&state->ready, &b->link);
io = state->io;
if (io != NULL && io->status != SPA_STATUS_HAVE_BUFFER) {
io->buffer_id = b->id;
io->status = SPA_STATUS_HAVE_BUFFER;
}
else {
spa_list_append(&state->ready, &b->link);
}
state->callbacks->process(state->callbacks_data, SPA_STATUS_HAVE_BUFFER);
}

2
spa/plugins/v4l2/v4l2-source.c
View file

@ -909,7 +909,7 @@ static int impl_node_process(struct spa_node *node)
}
if (spa_list_is_empty(&port->queue))
return -EPIPE;
return SPA_STATUS_OK;
b = spa_list_first(&port->queue, struct buffer, link);
spa_list_remove(&b->link);

14
spa/plugins/v4l2/v4l2-utils.c
View file

@ -1145,6 +1145,7 @@ static int mmap_read(struct impl *this)
{
struct port *port = &this->out_ports[0];
struct spa_v4l2_device *dev = &port->dev;
struct spa_io_buffers *io;
struct v4l2_buffer buf;
struct buffer *b;
struct spa_data *d;
@ -1158,6 +1159,7 @@ static int mmap_read(struct impl *this)
return -errno;
pts = SPA_TIMEVAL_TO_NSEC(&buf.timestamp);
spa_log_trace(this->log, "v4l2 %p: have output %d", this, buf.index);
if (this->clock) {
this->clock->nsec = pts;
@ -1180,9 +1182,17 @@ static int mmap_read(struct impl *this)
d[0].chunk->stride = port->fmt.fmt.pix.bytesperline;
SPA_FLAG_SET(b->flags, BUFFER_FLAG_OUTSTANDING);
spa_list_append(&port->queue, &b->link);
spa_log_trace(this->log, "v4l2 %p: have output %d", this, buf.index);
io = port->io;
if (io != NULL && io->status != SPA_STATUS_HAVE_BUFFER) {
io->buffer_id = b->id;
io->status = SPA_STATUS_HAVE_BUFFER;
}
else {
spa_list_append(&port->queue, &b->link);
}
spa_log_trace(this->log, "v4l2 %p: now queued %d", this, b->id);
this->callbacks->process(this->callbacks_data, SPA_STATUS_HAVE_BUFFER);
return 0;