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|
#!/usr/bin/python
# vi: et sw=2
#
# lib_pulseaudio.py
# Copyright (C) 2009 Harry Karvonen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
# Provides pulseaudio interface for python
#
# Author: Harry Karvonen <harry.karvonen@gmail.com>
#
from ctypes import *
pulse = CDLL("libpulse.so.0");
################################################################################
#
# Constrants
#
################################################################################
PA_CHANNELS_MAX = 32
PA_VOLUME_NORM = 0x10000
# sample types
(
PA_SAMPLE_U8,
PA_SAMPLE_ALAW,
PA_SAMPLE_ULAW,
PA_SAMPLE_S16LE,
PA_SAMPLE_S16BE,
PA_SAMPLE_FLOAT32LE,
PA_SAMPLE_FLOAT32BE,
PA_SAMPLE_S32LE,
PA_SAMPLE_S32BE,
PA_SAMPLE_S24LE,
PA_SAMPLE_S24BE,
PA_SAMPLE_S24_32LE,
PA_SAMPLE_S24_32BE,
PA_SAMPLE_MAX,
PA_SAMPLE_INVALID
) = map(c_int, xrange(15))
# channel positions
(
PA_CHANNEL_POSITION_INVALID,
PA_CHANNEL_POSITION_MONO,
PA_CHANNEL_POSITION_LEFT,
PA_CHANNEL_POSITION_RIGHT,
PA_CHANNEL_POSITION_CENTER,
PA_CHANNEL_POSITION_FRONT_LEFT,
PA_CHANNEL_POSITION_FRONT_RIGHT,
PA_CHANNEL_POSITION_FRONT_CENTER,
PA_CHANNEL_POSITION_REAR_CENTER,
PA_CHANNEL_POSITION_REAR_LEFT,
PA_CHANNEL_POSITION_REAR_RIGHT,
PA_CHANNEL_POSITION_LFE,
PA_CHANNEL_POSITION_SUBWOOFER,
PA_CHANNEL_POSITION_FRONT_LEFT_OF_CENTER,
PA_CHANNEL_POSITION_FRONT_RIGHT_OF_CENTER,
PA_CHANNEL_POSITION_SIDE_LEFT,
PA_CHANNEL_POSITION_SIDE_RIGHT,
PA_CHANNEL_POSITION_AUX0,
PA_CHANNEL_POSITION_AUX1,
PA_CHANNEL_POSITION_AUX2,
PA_CHANNEL_POSITION_AUX3,
PA_CHANNEL_POSITION_AUX4,
PA_CHANNEL_POSITION_AUX5,
PA_CHANNEL_POSITION_AUX6,
PA_CHANNEL_POSITION_AUX7,
PA_CHANNEL_POSITION_AUX8,
PA_CHANNEL_POSITION_AUX9,
PA_CHANNEL_POSITION_AUX10,
PA_CHANNEL_POSITION_AUX11,
PA_CHANNEL_POSITION_AUX12,
PA_CHANNEL_POSITION_AUX13,
PA_CHANNEL_POSITION_AUX14,
PA_CHANNEL_POSITION_AUX15,
PA_CHANNEL_POSITION_AUX16,
PA_CHANNEL_POSITION_AUX17,
PA_CHANNEL_POSITION_AUX18,
PA_CHANNEL_POSITION_AUX19,
PA_CHANNEL_POSITION_AUX20,
PA_CHANNEL_POSITION_AUX21,
PA_CHANNEL_POSITION_AUX22,
PA_CHANNEL_POSITION_AUX23,
PA_CHANNEL_POSITION_AUX24,
PA_CHANNEL_POSITION_AUX25,
PA_CHANNEL_POSITION_AUX26,
PA_CHANNEL_POSITION_AUX27,
PA_CHANNEL_POSITION_AUX28,
PA_CHANNEL_POSITION_AUX29,
PA_CHANNEL_POSITION_AUX30,
PA_CHANNEL_POSITION_AUX31,
PA_CHANNEL_POSITION_TOP_CENTER,
PA_CHANNEL_POSITION_TOP_FRONT_LEFT,
PA_CHANNEL_POSITION_TOP_FRONT_RIGHT,
PA_CHANNEL_POSITION_TOP_FRONT_CENTER,
PA_CHANNEL_POSITION_TOP_REAR_LEFT,
PA_CHANNEL_POSITION_TOP_REAR_RIGHT,
PA_CHANNEL_POSITION_TOP_REAR_CENTER,
PA_CHANNEL_POSITION_MAX
) = map(c_int, xrange(57))
# stream states
(
PA_STREAM_UNCONNECTED,
PA_STREAM_CREATING,
PA_STREAM_READY,
PA_STREAM_FAILED,
PA_STREAM_TERMINATED
) = map(c_int, xrange(5))
# stream directions
(
PA_STREAM_NODIRECTION,
PA_STREAM_PLAYBACK,
PA_STREAM_RECORD,
PA_STREAM_UPLOAD
) = map(c_int, xrange(4))
# stream flags
(
PA_STREAM_START_CORKED,
PA_STREAM_INTERPOLATE_TIMING,
PA_STREAM_NOT_MONOTONIC,
PA_STREAM_AUTO_TIMING_UPDATE,
PA_STREAM_NO_REMAP_CHANNELS,
PA_STREAM_NO_REMIX_CHANNELS,
PA_STREAM_FIX_FORMAT,
PA_STREAM_FIX_RATE,
PA_STREAM_FIX_CHANNELS,
PA_STREAM_DONT_MOVE,
PA_STREAM_VARIABLE_RATE,
PA_STREAM_PEAK_DETECT,
PA_STREAM_START_MUTED,
PA_STREAM_ADJUST_LATENCY,
PA_STREAM_EARLY_REQUESTS,
PA_STREAM_DONT_INHIBIT_AUTO_SUSPEND,
PA_STREAM_START_UNMUTED,
PA_STREAM_FAIL_ON_SUSPEND
) = map(c_int, xrange(18))
# subscription event masks
PA_SUBSCRIPTION_MASK_NULL = 0x0000
PA_SUBSCRIPTION_MASK_SINK = 0x0001
PA_SUBSCRIPTION_MASK_SOURCE = 0x0002
PA_SUBSCRIPTION_MASK_SINK_INPUT = 0x0004
PA_SUBSCRIPTION_MASK_SOURCE_OUTPUT = 0x0008
PA_SUBSCRIPTION_MASK_MODULE = 0x0010
PA_SUBSCRIPTION_MASK_CLIENT = 0x0020
PA_SUBSCRIPTION_MASK_SAMPLE_CACHE = 0x0040
PA_SUBSCRIPTION_MASK_SERVER = 0x0080
PA_SUBSCRIPTION_MASK_CARD = 0x0200
PA_SUBSCRIPTION_MASK_ALL = 0x02ff
# subscription event types
PA_SUBSCRIPTION_EVENT_SINK = 0x0000
PA_SUBSCRIPTION_EVENT_SOURCE = 0x0001
PA_SUBSCRIPTION_EVENT_SINK_INPUT = 0x0002
PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT = 0x0003
PA_SUBSCRIPTION_EVENT_MODULE = 0x0004
PA_SUBSCRIPTION_EVENT_CLIENT = 0x0005
PA_SUBSCRIPTION_EVENT_SAMPLE_CACHE = 0x0006
PA_SUBSCRIPTION_EVENT_SERVER = 0x0007
PA_SUBSCRIPTION_EVENT_CARD = 0x0009
PA_SUBSCRIPTION_EVENT_FACILITY_MASK = 0x000F
PA_SUBSCRIPTION_EVENT_NEW = 0x0000
PA_SUBSCRIPTION_EVENT_CHANGE = 0x0010
PA_SUBSCRIPTION_EVENT_REMOVE = 0x0020
PA_SUBSCRIPTION_EVENT_TYPE_MASK = 0x0030
################################################################################
#
# Structs
#
################################################################################
class PA_IO_EVENT(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_MAINLOOP(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_MAINLOOP_API(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_SIGNAL_EVENT(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_CONTEXT(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_OPERATION(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_STREAM(Structure):
_fields_ = [("_opaque_struct", c_int)]
class PA_SAMPLE_SPEC(Structure):
_fields_ = [
("format", c_int), # FIXME check this
("rate", c_uint32),
("channels", c_uint8)
]
class PA_CHANNEL_MAP(Structure):
_fields_ = [
("channels", c_uint8),
("map", c_int * PA_CHANNELS_MAX)
]
class PA_CVOLUME(Structure):
_fields_ = [
("channels", c_uint8),
("values", c_uint32 * PA_CHANNELS_MAX)
]
class PA_BUFFER_ATTR(Structure):
_fields_ = [
("maxlength", c_uint32),
("tlength", c_uint32),
("prebuf", c_uint32),
("minreq", c_uint32),
("fragsize", c_uint32)
]
PA_USEC_T = c_uint64
class PA_SERVER_INFO(Structure):
_fields_ = [
('user_name', c_char_p),
('host_name', c_char_p),
('server_version', c_char_p),
('server_name', c_char_p),
('sample_spec', PA_SAMPLE_SPEC),
('default_sink_name', c_char_p),
('default_source_name', c_char_p),
('cookie', c_uint32),
('channel_map', PA_CHANNEL_MAP)
]
class PA_SINK_INPUT_INFO(Structure):
__slots__ = [
'index',
'name',
'owner_module',
'client',
'sink',
'sample_spec',
'channel_map',
'volume',
'buffer_usec',
'sink_usec',
'resample_method',
'driver',
'mute',
]
_fields_ = [
("index", c_uint32),
("name", c_char_p),
("owner_module", c_uint32),
("client", c_uint32),
("sink", c_uint32),
("sample_spec", PA_SAMPLE_SPEC),
("channel_map", PA_CHANNEL_MAP),
("volume", PA_CVOLUME),
("buffer_usec", PA_USEC_T),
("sink_usec", PA_USEC_T),
("resample_method", c_char_p),
("driver", c_char_p),
("mute", c_int)
#("proplist", POINTER(c_int))
]
class PA_SINK_INFO(Structure):
_fields_ = [
("name", c_char_p),
("index", c_uint32),
("description", c_char_p),
("sample_spec", PA_SAMPLE_SPEC),
("channel_map", PA_CHANNEL_MAP),
("owner_module", c_uint32),
("volume", PA_CVOLUME),
("mute", c_int),
("monitor_source", c_uint32),
("monitor_source_name", c_char_p),
("latency", PA_USEC_T),
("driver", c_char_p),
("flags", c_int),
("proplist", POINTER(c_int)),
("configured_latency", PA_USEC_T)
]
class PA_SOURCE_OUTPUT_INFO(Structure):
__slots__ = [
'index',
'name',
'owner_module',
'client',
'source',
'sample_spec',
'channel_map',
'volume',
'buffer_usec',
'sink_usec',
'resample_method',
'driver',
'mute',
]
_fields_ = [
("index", c_uint32),
("name", c_char_p),
("owner_module", c_uint32),
("client", c_uint32),
("source", c_uint32),
("sample_spec", PA_SAMPLE_SPEC),
("channel_map", PA_CHANNEL_MAP),
("volume", PA_CVOLUME),
("buffer_usec", PA_USEC_T),
("sink_usec", PA_USEC_T),
("resample_method", c_char_p),
("driver", c_char_p),
("mute", c_int)
#("proplist", POINTER(c_int))
]
class PA_SOURCE_INFO(Structure):
_fields_ = [
("name", c_char_p),
("index", c_uint32),
("description", c_char_p),
("sample_spec", PA_SAMPLE_SPEC),
("channel_map", PA_CHANNEL_MAP),
("owner_module", c_uint32),
("volume", PA_CVOLUME),
("mute", c_int),
("monitor_of_sink", c_uint32),
("monitor_of_sink_name", c_char_p),
("latency", PA_USEC_T),
("driver", c_char_p),
("flags", c_int),
("proplist", POINTER(c_int)),
("configured_latency", PA_USEC_T)
]
class PA_CLIENT_INFO(Structure):
_fields_ = [
("index", c_uint32),
("name", c_char_p),
("owner_module", c_uint32),
("driver", c_char_p)
#("proplist", POINTER(c_int))
]
################################################################################
#
# Callback types
#
################################################################################
#PA_IO_EVENT_CB_T = CFUNCTYPE(c_void_p,
# POINTER(PA_MAINLOOP_API),
# POINTER(PA_IO_EVENT),
# c_int,
# c_int,
# c_void_p)
# SIGNAL
PA_SIGNAL_CB_T = CFUNCTYPE(c_void_p,
POINTER(PA_MAINLOOP_API),
POINTER(PA_SIGNAL_EVENT),
c_int,
c_void_p)
# STATE
PA_STATE_CB_T = CFUNCTYPE(c_int,
POINTER(PA_CONTEXT),
c_void_p)
# CLIENT
PA_CLIENT_INFO_CB_T = CFUNCTYPE(c_void_p,
POINTER(PA_CONTEXT),
POINTER(PA_CLIENT_INFO),
c_int,
c_void_p)
# SINK INPUT
PA_SINK_INPUT_INFO_CB_T = CFUNCTYPE(c_int, #FIXME wrong type
POINTER(PA_CONTEXT),
POINTER(PA_SINK_INPUT_INFO),
c_int,
c_void_p)
# SINK
PA_SINK_INFO_CB_T = CFUNCTYPE(c_int, #FIXME wrong type
POINTER(PA_CONTEXT),
POINTER(PA_SINK_INFO),
c_int,
c_void_p)
# SOURCE OUTPUT
PA_SOURCE_OUTPUT_INFO_CB_T = CFUNCTYPE(c_int, #FIXME wrong type
POINTER(PA_CONTEXT),
POINTER(PA_SOURCE_OUTPUT_INFO),
c_int,
c_void_p)
# SOURCE
PA_SOURCE_INFO_CB_T = CFUNCTYPE(c_int, #FIXME wrong type
POINTER(PA_CONTEXT),
POINTER(PA_SOURCE_INFO),
c_int,
c_void_p)
# CONTEXT
PA_CONTEXT_DRAIN_CB_T = CFUNCTYPE(c_void_p,
POINTER(PA_CONTEXT),
c_void_p)
PA_CONTEXT_SUCCESS_CB_T = CFUNCTYPE(c_void_p,
POINTER(PA_CONTEXT),
c_int,
c_void_p)
PA_CONTEXT_SUBSCRIBE_CB_T = CFUNCTYPE(c_void_p,
POINTER(PA_CONTEXT),
c_int,
c_uint32,
c_void_p)
################################################################################
#
# Functions
#
################################################################################
#
# pa_strerror
pa_strerror = pulse.pa_strerror
pa_strerror.restype = c_char_p
pa_strerror.argtypes = [
c_int
]
#
# pa_mainloop_*
pa_mainloop_new = pulse.pa_mainloop_new
pa_mainloop_new.restype = POINTER(PA_MAINLOOP)
pa_mainloop_new.argtypes = [
]
pa_mainloop_get_api = pulse.pa_mainloop_get_api
pa_mainloop_get_api.restype = POINTER(PA_MAINLOOP_API)
pa_mainloop_get_api.argtypes = [
POINTER(PA_MAINLOOP)
]
pa_mainloop_run = pulse.pa_mainloop_run
pa_mainloop_run.restype = c_int
pa_mainloop_run.argtypes = [
POINTER(PA_MAINLOOP),
POINTER(c_int)
]
pa_mainloop_iterate = pulse.pa_mainloop_iterate
pa_mainloop_iterate.restype = c_int
pa_mainloop_iterate.argtypes = [
POINTER(PA_MAINLOOP),
c_int,
POINTER(c_int)
]
pa_mainloop_quit = pulse.pa_mainloop_quit
pa_mainloop_quit.restype = c_int
pa_mainloop_quit.argtypes = [
POINTER(PA_MAINLOOP),
c_int
]
pa_mainloop_dispatch = pulse.pa_mainloop_dispatch
pa_mainloop_dispatch.restype = c_int
pa_mainloop_dispatch.argtypes = [
POINTER(PA_MAINLOOP)
]
pa_mainloop_free = pulse.pa_mainloop_run
pa_mainloop_free.restype = c_int
pa_mainloop_free.argtypes = [
POINTER(PA_MAINLOOP)
]
#
# pa_signal_*
pa_signal_init = pulse.pa_signal_init
pa_signal_init.restype = c_int
pa_signal_init.argtypes = [
POINTER(PA_MAINLOOP_API)
]
pa_signal_new = pulse.pa_signal_new
pa_signal_new.restype = POINTER(PA_SIGNAL_EVENT)
pa_signal_new.argtypes = [
c_int,
PA_SIGNAL_CB_T,
c_void_p
]
#
# pa_context_*
pa_context_errno = pulse.pa_context_errno
pa_context_errno.restype = c_int
pa_context_errno.argtypes = [
POINTER(PA_CONTEXT)
]
pa_context_new = pulse.pa_context_new
pa_context_new.restype = POINTER(PA_CONTEXT)
pa_context_new.argtypes = [
POINTER(PA_MAINLOOP_API),
c_char_p
]
pa_context_set_state_callback = pulse.pa_context_set_state_callback
pa_context_set_state_callback.restype = None
pa_context_set_state_callback.argtypes = [
POINTER(PA_CONTEXT),
PA_STATE_CB_T,
c_void_p
]
pa_context_connect = pulse.pa_context_connect
pa_context_connect.restype = c_int
pa_context_connect.argtypes = [
POINTER(PA_CONTEXT),
c_char_p,
c_int, #FIXME | isn't correct
POINTER(c_int)
]
pa_context_get_state = pulse.pa_context_get_state
pa_context_get_state.restype = c_int;
pa_context_get_state.argtypes = [
POINTER(PA_CONTEXT)
]
pa_context_drain = pulse.pa_context_drain
pa_context_drain.restype = POINTER(PA_OPERATION)
pa_context_drain.argtypes = [
POINTER(PA_CONTEXT),
PA_CONTEXT_DRAIN_CB_T,
c_void_p
]
pa_context_disconnect = pulse.pa_context_disconnect
pa_context_disconnect.restype = c_int;
pa_context_disconnect.argtypes = [
POINTER(PA_CONTEXT)
]
#
# pa_context_*_sink_*
pa_context_get_sink_input_info_list = pulse.pa_context_get_sink_input_info_list
pa_context_get_sink_input_info_list.restype = POINTER(c_int)
pa_context_get_sink_input_info_list.argtypes = [
POINTER(PA_CONTEXT),
PA_SINK_INPUT_INFO_CB_T,
c_void_p
]
pa_context_get_sink_info_list = pulse.pa_context_get_sink_info_list
pa_context_get_sink_info_list.restype = POINTER(c_int)
pa_context_get_sink_info_list.argtypes = [
POINTER(PA_CONTEXT),
PA_SINK_INFO_CB_T,
c_void_p
]
pa_context_set_sink_mute_by_index = pulse.pa_context_set_sink_mute_by_index
pa_context_set_sink_mute_by_index.restype = POINTER(c_int)
pa_context_set_sink_mute_by_index.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
c_int,
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
pa_context_set_sink_input_mute = pulse.pa_context_set_sink_input_mute
pa_context_set_sink_input_mute.restype = POINTER(c_int)
pa_context_set_sink_input_mute.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
c_int,
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
pa_context_set_sink_volume_by_index = pulse.pa_context_set_sink_volume_by_index
pa_context_set_sink_volume_by_index.restype = POINTER(c_int)
pa_context_set_sink_volume_by_index.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
POINTER(PA_CVOLUME),
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
pa_context_set_sink_input_volume = pulse.pa_context_set_sink_input_volume
pa_context_set_sink_input_volume.restype = POINTER(c_int)
pa_context_set_sink_input_volume.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
POINTER(PA_CVOLUME),
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
#
# pa_context_*_source_*
pa_context_get_source_output_info_list = pulse.pa_context_get_source_output_info_list
pa_context_get_source_output_info_list.restype = POINTER(c_int)
pa_context_get_source_output_info_list.argtypes = [
POINTER(PA_CONTEXT),
PA_SOURCE_OUTPUT_INFO_CB_T,
c_void_p
]
pa_context_get_source_info_list = pulse.pa_context_get_source_info_list
pa_context_get_source_info_list.restype = POINTER(c_int)
pa_context_get_source_info_list.argtypes = [
POINTER(PA_CONTEXT),
PA_SOURCE_INFO_CB_T,
c_void_p
]
pa_context_set_source_mute_by_index = pulse.pa_context_set_source_mute_by_index
pa_context_set_source_mute_by_index.restype = POINTER(c_int)
pa_context_set_source_mute_by_index.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
c_int,
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
pa_context_set_source_volume_by_index = pulse.pa_context_set_source_volume_by_index
pa_context_set_source_volume_by_index.restype = POINTER(c_int)
pa_context_set_source_volume_by_index.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
POINTER(PA_CVOLUME),
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
#
# pa_context_*_client_*
pa_context_get_client_info_list = pulse.pa_context_get_client_info_list
pa_context_get_client_info_list.restype = POINTER(c_int)
pa_context_get_client_info_list.argtypes = [
POINTER(PA_CONTEXT),
PA_CLIENT_INFO_CB_T,
c_void_p
]
pa_context_get_client_info = pulse.pa_context_get_client_info
pa_context_get_client_info.restype = POINTER(c_int)
pa_context_get_client_info.argtypes = [
POINTER(PA_CONTEXT),
c_uint32,
PA_CLIENT_INFO_CB_T,
c_void_p
]
#
# pa_context_*_subscribe*
pa_context_set_subscribe_callback = pulse.pa_context_set_subscribe_callback
pa_context_set_subscribe_callback.restype = c_int
pa_context_set_subscribe_callback.argtypes = [
POINTER(PA_CONTEXT),
PA_CONTEXT_SUBSCRIBE_CB_T,
c_void_p
]
pa_context_subscribe = pulse.pa_context_subscribe
pa_context_subscribe.restype = POINTER(PA_OPERATION)
pa_context_subscribe.argtypes = [
POINTER(PA_CONTEXT),
c_int,
PA_CONTEXT_SUCCESS_CB_T,
c_void_p
]
#
# pa_operation_*
pa_operation_unref = pulse.pa_operation_unref
pa_operation_unref.restype = c_int
pa_operation_unref.argtypes = [
POINTER(PA_OPERATION)
]
#
# pa_stream_*
pa_stream_connect_record = pulse.pa_stream_connect_record
pa_stream_connect_record.restype = c_int
pa_stream_connect_record.argtypes = [
POINTER(PA_STREAM),
c_char_p,
POINTER(PA_BUFFER_ATTR),
c_int # original pa_stream_flags_t
]
pa_stream_peek = pulse.pa_stream_peek
pa_stream_peek.restype = c_int
pa_stream_peek.argtypes = [
POINTER(PA_STREAM),
POINTER(c_void_p), # original is void **data, no idea if this works
POINTER(c_size_t)
]
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