def subscribe_cb(self, context, event_value, idx, user_data):
if not idx:
idx = 0
event_facility = event_value & p.PA_SUBSCRIPTION_EVENT_FACILITY_MASK
if event_facility == p.PA_SUBSCRIPTION_EVENT_SINK_INPUT:
event_type = event_value & p.PA_SUBSCRIPTION_EVENT_TYPE_MASK
if event_type == p.PA_SUBSCRIPTION_EVENT_NEW:
p.pa_context_get_sink_input_info(context, idx,
self.sink_input_info_cb,
1) # 1 for new
elif event_type == p.PA_SUBSCRIPTION_EVENT_CHANGE:
p.pa_context_get_sink_input_info(context, idx,
self.sink_input_info_cb,
2) # 2 for changes
elif event_type == p.PA_SUBSCRIPTION_EVENT_REMOVE:
GLib.idle_add(self.emit, 'sink_input_removed', idx)
elif event_facility == p.PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT:
event_type = event_value & p.PA_SUBSCRIPTION_EVENT_TYPE_MASK
if event_type == p.PA_SUBSCRIPTION_EVENT_NEW:
p.pa_context_get_source_output_info(context, idx,
self.source_output_info_cb,
1) # 1 for new
elif event_type == p.PA_SUBSCRIPTION_EVENT_CHANGE:
p.pa_context_get_source_output_info(context, idx,
self.source_output_info_cb,
2) # 1 for new
elif event_type == p.PA_SUBSCRIPTION_EVENT_REMOVE:
GLib.idle_add(self.emit, 'source_output_removed', idx)
elif event_facility == p.PA_SUBSCRIPTION_EVENT_SOURCE:
event_type = event_value & p.PA_SUBSCRIPTION_EVENT_TYPE_MASK
if event_type == p.PA_SUBSCRIPTION_EVENT_NEW:
p.pa_context_get_source_info_by_index(self.ctx, idx,
self.source_info_cb,
1) # 1 for new
elif event_type == p.PA_SUBSCRIPTION_EVENT_CHANGE:
pass
elif event_type == p.PA_SUBSCRIPTION_EVENT_REMOVE:
GLib.idle_add(self.emit, 'source_removed', idx)
elif event_facility == p.PA_SUBSCRIPTION_EVENT_SINK:
event_type = event_value & p.PA_SUBSCRIPTION_EVENT_TYPE_MASK
if event_type == p.PA_SUBSCRIPTION_EVENT_NEW:
p.pa_context_get_sink_info_by_index(self.ctx, idx,
self.sink_info_cb,
1) # 1 for new
elif event_type == p.PA_SUBSCRIPTION_EVENT_CHANGE:
pass
elif event_type == p.PA_SUBSCRIPTION_EVENT_REMOVE:
GLib.idle_add(self.emit, 'sink_removed', idx)
elif event_facility == p.PA_SUBSCRIPTION_EVENT_SERVER:
event_type = event_value & p.PA_SUBSCRIPTION_EVENT_TYPE_MASK
if event_type == p.PA_SUBSCRIPTION_EVENT_CHANGE:
p.pa_context_get_server_info(context, self.server_info_cb, 1)
def get_server_info(self):
o = p.pa_context_get_server_info(self.ctx, self.server_info_cb, None)
while p.pa_operation_get_state(o) == p.PA_OPERATION_RUNNING:
pass
p.pa_operation_unref(o)
def get_server_info(self):
p.pa_threaded_mainloop_lock(self.main_loop)
o = p.pa_context_get_server_info(self.ctx, self.server_info_cb, None)
while p.pa_operation_get_state(o) == p.PA_OPERATION_RUNNING:
p.pa_threaded_mainloop_wait(self.main_loop)
p.pa_operation_unref(o)
p.pa_threaded_mainloop_unlock(self.main_loop)
def __init__(self):
GObject.GObject.__init__(self)
self.context_ok = False
self.default_sink_name = ''
self.sink_is_loaded = False
self.sink_owner_module = -1
self.sink_idx = -1
self.sink_monitor_name = ''
self.sink_inputs = []
self.max_volume = p.PA_VOLUME_NORM
self.log = logging.getLogger('PulseEffects')
self.app_blacklist = [
'PulseEffects', 'pulseeffects', 'gsd-media-keys', 'GNOME Shell',
'libcanberra', 'gnome-pomodoro'
]
self.media_blacklist = ['pulsesink probe']
# wrapping callbacks
self.ctx_cb = p.pa_context_notify_cb_t(self.context_status)
self.server_info_cb = p.pa_server_info_cb_t(self.server_info)
self.default_sink_info_cb = p.pa_sink_info_cb_t(self.default_sink_info)
self.sink_info_cb = p.pa_sink_info_cb_t(self.sink_info)
self.sink_input_info_cb = p.pa_sink_input_info_cb_t(
self.sink_input_info)
self.ctx_success_cb = p.pa_context_success_cb_t(self.ctx_success)
self.subscribe_cb = p.pa_context_subscribe_cb_t(self.subscribe)
# creating main loop and context
self.main_loop = p.pa_threaded_mainloop_new()
self.main_loop_api = p.pa_threaded_mainloop_get_api(self.main_loop)
self.ctx = p.pa_context_new(self.main_loop_api, b'PulseEffects')
p.pa_context_set_state_callback(self.ctx, self.ctx_cb, None)
p.pa_context_connect(self.ctx, None, 0, None)
p.pa_threaded_mainloop_start(self.main_loop)
# waiting context
while self.context_ok is False:
pass
# getting default sink name through server info
o = p.pa_context_get_server_info(self.ctx, self.server_info_cb, None)
while p.pa_operation_get_state(o) == p.PA_OPERATION_RUNNING:
pass
p.pa_operation_unref(o)
self.log.info('default pulseaudio sink: ' + self.default_sink_name)
# getting default sink rate through sink info. We set
# module-null-sink to the same rate to reduce clock drift
o = p.pa_context_get_sink_info_by_name(self.ctx,
self.default_sink_name.encode(),
self.default_sink_info_cb, None)
while p.pa_operation_get_state(o) == p.PA_OPERATION_RUNNING:
pass
p.pa_operation_unref(o)
self.log.info('default pulseaudio sink audio format: ' +
str(self.default_sink_format) +
'. We will use the same format.')
self.log.info('default pulseaudio sink sampling rate: ' +
str(self.default_sink_rate) +
' Hz. We will use the same rate.')
# load source sink
self.load_sink()
# search sink inputs
o = p.pa_context_get_sink_input_info_list(self.ctx,
self.sink_input_info_cb,
None)
while p.pa_operation_get_state(o) == p.PA_OPERATION_RUNNING:
pass
p.pa_operation_unref(o)
# subscribing to pulseaudio events
p.pa_context_set_subscribe_callback(self.ctx, self.subscribe_cb, None)
p.pa_context_subscribe(self.ctx, p.PA_SUBSCRIPTION_MASK_SINK_INPUT,
self.ctx_success_cb, None)