---
tags: AVer
---

# Draco Ladon

## Thread

### Thread Create

st=>start: start
1
e=>end: end
e1=>end: return
init=>condition: init attribute
stk_sz=>operation: Set Stack Size
chk_poli=>condition: FIFO
or
Run Robin 
set_poli=>operation: set policy
chk_cpu=>condition: cpu != -1
set_cpu=>operation: set CPU
create=>operation: create
distory=>operation: distory attribute

st->init
init(yes@success)->stk_sz->chk_poli
init(no@failed, right)->e1
chk_poli(yes)->set_poli->chk_cpu
chk_poli(no, right)->chk_cpu
chk_cpu(yes)->set_cpu->create
chk_cpu(no, right)->create
create->distory->e

## Ladon

### Main

st=>start: start
e=>end: exit
set_up=>subroutine: set up
poll=>operation: polling net
funs=>subroutine: creating function
eloop=>inputoutput: event loop
tear=>operation: teardown

st->set_up->poll->funs->eloop(bottom)->tear->e

### Setup

st=>start: start
e=>end: end
opt=>operation: load camera option
init=>operation: init options
read=>operation: read:
HW version,
MAC address,
FW version,
serial number
stm=>operation: init streaming queue
net=>subroutine: init net

st->opt->init->read->stm->net->e

### net init

st=>start: start
e=>end: end
queue=>operation: init queue
cli=>condition: new client
dev=>operation: get device
proxy=>condition: new proxy
conn=>operation: connect g_singal
ret=>end: return

st->queue->cli
cli(yes@success)->dev
cli(no@failed, right)->ret
dev->proxy
proxy(yes@success)->conn
proxy(no@failed, right)->ret
conn->e

## Option

### Option Set

st=>start: CAM_OPT_SET
e=>end: return
p1=>inputoutput: param 1 "m"
p2=>inputoutput: param 2 "w"
p3=>inputoutput: param 3 "v"
p4=>inputoutput: param 4 "f"
f1=>operation: find option instance
f2=>operation: find value array
max/min/current/default
s1=>operation: set value
s2=>operation: set if need force run
cb=>subroutine: call set callback function

st->p1->f1->p2->f2->p3->s1->p4->s2->cb->e

### Get

st=>start: CAM_OPT_GET
e=>end: return value
p1=>inputoutput: param 1 "m"
p2=>inputoutput: param 2 "w"
f1=>operation: find option instance
f2=>operation: find value array
max/min/current/default
cb=>subroutine: call get callback function

st->p1->f1->p2->f2->cb->e