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#!/usr/bin/env python3
import gi
gi.require_versions({'GLib': '2.0', 'Hinoko': '1.0'})
from gi.repository import GLib, Hinoko
from threading import Thread
from time import sleep
bytes_per_payload = (2 + 8 * 3) * 4
use_channel = 10
use_bandwidth = Hinoko.FwIsoResource.calculate_bandwidth(bytes_per_payload,
Hinoko.FwScode.S400)
ctx = GLib.MainContext.new()
dispatcher = GLib.MainLoop.new(ctx, False)
th = Thread(target=lambda d: d.run(), args=(dispatcher,))
th.start()
def handle_event(res, channel, bandwidth, exception, ev_name):
print('event:', ev_name)
if exception is None:
print(' ', channel, bandwidth, res.get_property('generation'))
elif exception.matches(Hinoko.fw_iso_resource_error_quark(), Hinoko.FwIsoResourceError.EVENT):
print(' ', exception)
# For Once mode. The allocation is bound to current generation of the bus and
# lost automatically by bus reset without notification.
res = Hinoko.FwIsoResourceOnce.new()
res.open('/dev/fw0', 0)
res.connect('allocated', handle_event, 'allocated')
res.connect('deallocated', handle_event, 'deallocated')
_, src = res.create_source()
src.attach(ctx)
for i in range(2):
try:
res.allocate_wait((use_channel, ), use_bandwidth, 100)
except GLib.Error as e:
if e.matches(Hinoko.fw_iso_resource_error_quark(), Hinoko.FwIsoResourceError.EVENT):
print(e)
else:
print('result: allocate')
print(' ', use_channel, use_bandwidth, res.get_property('generation'))
sleep(2)
try:
res.deallocate_wait(use_channel, use_bandwidth, 100)
except GLib.Error as e:
if e.matches(Hinoko.fw_iso_resource_error_quark(), Hinoko.FwIsoResourceError.EVENT):
print(e)
else:
print('result: deallocate')
print(' ', use_channel, use_bandwidth, res.get_property('generation'))
sleep(2)
src.destroy()
del res
# For Auto mode. The allocation is kept by Linux FireWire subsystem as long as
# the lifetime of file descriptor. The instance of object represents state
# machine.
res = Hinoko.FwIsoResourceAuto.new()
res.open('/dev/fw0', 0)
res.connect('allocated', handle_event, 'allocated')
res.connect('deallocated', handle_event, 'deallocated')
_, src = res.create_source()
src.attach(ctx)
def print_props(res):
for prop in ('is-allocated', 'channel', 'bandwidth', 'generation'):
print(' {}: {}'.format(prop, res.get_property(prop)))
for i in range(2):
print_props(res)
try:
res.allocate_wait([use_channel], use_bandwidth, 100)
except GLib.Error as e:
if e.matches(Hinoko.fw_iso_resource_error_quark(), Hinoko.FwIsoResourceError.EVENT):
print(e)
else:
print('result: allocate')
print_props(res)
sleep(1)
try:
res.deallocate_wait(100)
except GLib.Error as e:
if e.matches(Hinoko.fw_iso_resource_error_quark(), Hinoko.FwIsoResourceError.EVENT):
print(e)
else:
print('result: deallocate')
print_props(res)
sleep(1)
dispatcher.quit()
th.join()
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