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/*
cec.cpp
*
* Copyright (C) 2013 Austin Hendrix <namniart@gmail.com>
*
* 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 2 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/>.
*/
/*
* This file provides the python cec module, which is a python wrapper
* around libcec
*
* Author: Austin Hendrix <namniart@gmail.com>
*/
//
request the std format macros
#
define
__STDC_FORMAT_MACROS
#
define
PY_SSIZE_T_CLEAN
#
include
<
Python.h
>
#
include
<
stdlib.h
>
#
include
<
inttypes.h
>
#
include
<
libcec/cec.h
>
#
include
<
algorithm
>
#
include
<
list
>
#
include
"
device.h
"
using
namespace
CEC
;
//
Basic design/usage:
//
//
( cec.add_callback(event, handler) )
//
???
//
//
( cec.remove_callback(event, handler) )
//
???
//
//
( cec.transmit( ??? ) )
//
call ICECAdapter::Transmit()
//
//
Events:
//
- log message
//
message.message[1024]
//
message.level (bitfield)
//
message.time (int64)
//
- key press
//
key.keycode (int/enum)
//
key.duration (int)
//
- command
//
command.initiator (logical address)
//
command.destination (logical address)
//
command.ack
//
command.eom
//
command.opcode (enum)
//
command.parameters
//
command.opcode_set (flag for when opcode is set; should probably use
//
this to set opcode to None)
//
command.transmit_timeout
//
- cec configuration changed (adapter/library config change)
//
- alert
//
- menu state changed
//
this is potentially thorny; see libcec source and CEC spec
//
???
//
- source activated
//
#
define
EVENT_LOG
0x0001
#
define
EVENT_KEYPRESS
0x0002
#
define
EVENT_COMMAND
0x0004
#
define
EVENT_CONFIG_CHANGE
0x0008
#
define
EVENT_ALERT
0x0010
#
define
EVENT_MENU_CHANGED
0x0020
#
define
EVENT_ACTIVATED
0x0040
#
define
EVENT_VALID
0x007F
#
define
EVENT_ALL
0x007F
//
#define DEBUG 1
#
ifdef
DEBUG
#
define
debug
(...) printf(
"
CEC DEBUG:
"
__VA_ARGS__)
#
else
#
define
debug
(...)
#
endif
//
cec_adapter_descriptor and DetectAdapters were introduced in 2.1.0
#
if
CEC_LIB_VERSION_MAJOR >= 3 || (CEC_LIB_VERSION_MAJOR >= 2 && CEC_LIB_VERSION_MINOR >= 1)
#
define
CEC_ADAPTER_TYPE
cec_adapter_descriptor
#
define
CEC_FIND_ADAPTERS
DetectAdapters
#
define
HAVE_CEC_ADAPTER_DESCRIPTOR
1
#
else
#
define
CEC_ADAPTER_TYPE
cec_adapter
#
define
CEC_FIND_ADAPTERS
FindAdapters
#
define
HAVE_CEC_ADAPTER_DESCRIPTOR
0
#
endif
int
parse_physical_addr
(
const
char
* addr) {
int
a, b, c, d;
if
(
sscanf
(addr,
"
%x.%x.%x.%x
"
, &a, &b, &c, &d) ==
4
) {
if
( a >
0xF
|| b >
0xF
|| c >
0xF
|| d >
0xF
)
return
-
1
;
if
( a <
0
|| b <
0
|| c <
0
|| d <
0
)
return
-
1
;
return
(a <<
12
) | (b <<
8
) | (c <<
4
) | d;
}
else
{
return
-
1
;
}
}
#
define
RETURN_BOOL
(
arg
)
do
{ \
bool
result; \
Py_BEGIN_ALLOW_THREADS \
result = (arg); \
Py_END_ALLOW_THREADS \
PyObject * ret = (result)?Py_True:Py_False; \
Py_INCREF
(ret); \
return
ret; \
}
while
(
0
)
void
parse_test
() {
assert
(
parse_physical_addr
(
"
0.0.0.0
"
) ==
0
);
assert
(
parse_physical_addr
(
"
F.0.0.0
"
) ==
0xF000
);
assert
(
parse_physical_addr
(
"
0.F.0.0
"
) ==
0x0F00
);
assert
(
parse_physical_addr
(
"
0.0.F.0
"
) ==
0x00F0
);
assert
(
parse_physical_addr
(
"
0.0.0.F
"
) ==
0x000F
);
assert
(
parse_physical_addr
(
"
-1.0.0.0
"
) == -
1
);
assert
(
parse_physical_addr
(
"
0.-1.0.0
"
) == -
1
);
assert
(
parse_physical_addr
(
"
0.0.-1.0
"
) == -
1
);
assert
(
parse_physical_addr
(
"
0.0.0.-1
"
) == -
1
);
assert
(
parse_physical_addr
(
"
foo
"
) == -
1
);
assert
(
parse_physical_addr
(
"
F.F.F.F
"
) ==
0xFFFF
);
assert
(
parse_physical_addr
(
"
f.f.f.f
"
) ==
0xFFFF
);
}
ICECAdapter * CEC_adapter;
PyObject * Device;
std::list<
CEC_ADAPTER_TYPE
>
get_adapters
() {
std::list<
CEC_ADAPTER_TYPE
> res;
//
release the Global Interpreter lock
Py_BEGIN_ALLOW_THREADS
//
get adapters
int
cec_count =
10
;
CEC_ADAPTER_TYPE
* dev_list = (
CEC_ADAPTER_TYPE
*)
malloc
(
cec_count *
sizeof
(
CEC_ADAPTER_TYPE
));
int
count = CEC_adapter->
CEC_FIND_ADAPTERS
(dev_list, cec_count);
if
( count > cec_count ) {
cec_count = count;
dev_list = (
CEC_ADAPTER_TYPE
*)
realloc
(dev_list,
cec_count *
sizeof
(
CEC_ADAPTER_TYPE
));
count = CEC_adapter->
CEC_FIND_ADAPTERS
(dev_list, cec_count);
count = (std::min)(count, cec_count);
}
for
(
int
i=
0
; i<count; i++ ) {
res.
push_back
(dev_list[i]);
}
free
(dev_list);
//
acquire the GIL before returning to code that uses python objects
Py_END_ALLOW_THREADS
return
res;
}
static
PyObject *
list_adapters
(PyObject * self, PyObject * args) {
PyObject * result =
NULL
;
if
(
PyArg_ParseTuple
(args,
"
:list_adapters
"
) ) {
std::list<
CEC_ADAPTER_TYPE
> dev_list =
get_adapters
();
//
set up our result list
result =
PyList_New
(
0
);
//
populate our result list
std::list<
CEC_ADAPTER_TYPE
>::const_iterator itr;
for
( itr = dev_list.
begin
(); itr != dev_list.
end
(); itr++ ) {
#
if
HAVE_CEC_ADAPTER_DESCRIPTOR
PyList_Append
(result,
Py_BuildValue
(
"
s
"
, itr->
strComName
));
/*
Convert all of the fields
PyList_Append(result, Py_BuildValue("sshhhhii",
itr->strComName,
itr->strComPath,
itr->iVendorId,
itr->iProductId,
itr->iFirmwareVersion,
itr->iPhysicalAddress,
itr->iFirmwareBuildDate,
itr->adapterType
));
*/
#
else
PyList_Append
(result,
Py_BuildValue
(
"
s
"
, itr->
comm
));
/*
Convert all of the fields
PyList_Append(result, Py_BuildValue("sshhhhii",
itr->comm,
itr->strComPath,
itr->iVendorId,
itr->iProductId,
itr->iFirmwareVersion,
itr->iPhysicalAddress,
itr->iFirmwareBuildDate,
itr->adapterType
));
*/
#
endif
}
}
return
result;
}
static
PyObject *
init
(PyObject * self, PyObject * args) {
PyObject * result =
NULL
;
const
char
* dev =
NULL
;
if
(
PyArg_ParseTuple
(args,
"
|s:init
"
, &dev) ) {
if
( !dev ) {
std::list<
CEC_ADAPTER_TYPE
> devs =
get_adapters
();
if
( devs.
size
() >
0
) {
#
if
HAVE_CEC_ADAPTER_DESCRIPTOR
dev = devs.
front
().
strComName
;
#
else
dev = devs.
front
().
comm
;
#
endif
}
else
{
PyErr_SetString
(PyExc_Exception,
"
No default adapter found
"
);
}
}
}
if
( dev ) {
bool
success =
false
;
Py_BEGIN_ALLOW_THREADS
success = CEC_adapter->
Open
(dev);
Py_END_ALLOW_THREADS
if
( success ) {
Py_INCREF
(Py_None);
result = Py_None;
}
else
{
Py_BEGIN_ALLOW_THREADS
CECDestroy
(CEC_adapter);
CEC_adapter =
NULL
;
Py_END_ALLOW_THREADS
char
errstr[
1024
];
snprintf
(errstr,
1024
,
"
CEC failed to open %s
"
, dev);
PyErr_SetString
(PyExc_IOError, errstr);
}
}
return
result;
}
static
PyObject *
close
(PyObject * self, PyObject * args) {
if
( CEC_adapter !=
NULL
) {
Py_BEGIN_ALLOW_THREADS
CEC_adapter->
Close
();
Py_END_ALLOW_THREADS
}
Py_INCREF
(Py_None);
return
Py_None;
}
static
PyObject *
list_devices
(PyObject * self, PyObject * args) {
PyObject * result =
NULL
;
if
(
PyArg_ParseTuple
(args,
"
:list_devices
"
) ) {
cec_logical_addresses devices;
Py_BEGIN_ALLOW_THREADS
devices = CEC_adapter->
GetActiveDevices
();
Py_END_ALLOW_THREADS
//
result = PyList_New(0);
result =
PyDict_New
();
for
(
uint8_t
i=
0
; i<
32
; i++ ) {
if
( devices[i] ) {
PyObject * ii =
Py_BuildValue
(
"
(b)
"
, i);
PyObject * dev =
PyObject_CallObject
(Device, ii);
Py_DECREF
(ii);
if
( dev ) {
//
PyList_Append(result, dev);
PyDict_SetItem
(result,
Py_BuildValue
(
"
b
"
, i), dev);
}
else
{
Py_DECREF
(result);
result =
NULL
;
break
;
}
}
}
}
return
result;
}
struct
Callback
{
public:
long
int
event;
PyObject * cb;
Callback
(
long
int
e, PyObject * c) : event(e), cb(c) {
}
};
typedef
std::list<Callback> cb_list;
cb_list callbacks;
static
PyObject *
add_callback
(PyObject * self, PyObject * args) {
PyObject * result =
NULL
;
PyObject * callback;
long
int
events =
EVENT_ALL
;
//
default to all events
if
(
PyArg_ParseTuple
(args,
"
O|i:add_callback
"
, &callback, &events) ) {
//
check that event is one of the allowed events
if
( events & ~(
EVENT_VALID
) ) {
PyErr_SetString
(PyExc_TypeError,
"
Invalid event(s) for callback
"
);
return
NULL
;
}
if
( !
PyCallable_Check
(callback)) {
PyErr_SetString
(PyExc_TypeError,
"
parameter must be callable
"
);
return
NULL
;
}
Py_INCREF
(callback);
Callback
new_cb
(events, callback);
debug
(
"
Adding callback for event %ld
\n
"
, events);
callbacks.
push_back
(new_cb);
Py_INCREF
(Py_None);
result = Py_None;
}
return
result;
}
static
PyObject *
remove_callback
(PyObject * self, PyObject * args) {
PyObject * callback;
Py_ssize_t events =
EVENT_ALL
;
//
default to all events
if
(
PyArg_ParseTuple
(args,
"
O|i:remove_callback
"
, &callback, &events) ) {
for
( cb_list::iterator itr = callbacks.
begin
();
itr != callbacks.
end
();
++itr ) {
if
( itr->
cb
== callback ) {
//
clear out the given events for this callback
itr->
event
&= ~(events);
if
( itr->
event
==
0
) {
//
if this callback has no events, remove it
itr = callbacks.
erase
(itr);
Py_DECREF
(callback);
}
}
}
}
Py_INCREF
(Py_None);
return
Py_None;
}
static
PyObject *
make_bound_method_args
(PyObject * self, PyObject * args) {
Py_ssize_t count =
0
;
if
(
PyTuple_Check
(args) ) {
count =
PyTuple_Size
(args);
}
PyObject * result =
PyTuple_New
(count+
1
);
if
( result ==
NULL
) {
return
NULL
;
}
assert
(self !=
NULL
);
Py_INCREF
(self);
PyTuple_SetItem
(result,
0
, self);
for
( Py_ssize_t i=
0
; i<count; i++ ) {
PyObject * arg =
PyTuple_GetItem
(args, i);
if
( arg ==
NULL
) {
Py_DECREF
(result);
return
NULL
;
}
Py_INCREF
(arg);
PyTuple_SetItem
(result, i+
1
, arg);
}
return
result;
}
static
PyObject *
trigger_event
(
long
int
event, PyObject * args) {
assert
(event &
EVENT_ALL
);
Py_INCREF
(Py_None);
PyObject * result = Py_None;
//
debug("Triggering event %ld\n", event);
int
i=
0
;
for
( cb_list::const_iterator itr = callbacks.
begin
();
itr != callbacks.
end
();
++itr ) {
//
debug("Checking callback %d with events %ld\n", i, itr->event);
if
( itr->
event
& event ) {
//
debug("Calling callback %d\n", i);
PyObject * callback = itr->
cb
;
PyObject * arguments = args;
if
(
PyMethod_Check
(itr->
cb
) ) {
callback =
PyMethod_Function
(itr->
cb
);
PyObject * self =
PyMethod_Self
(itr->
cb
);
if
( self ) {
//
bound method, prepend self/cls to argument tuple
arguments =
make_bound_method_args
(self, args);
}
}
//
see also: PyObject_CallFunction(...) which can take C args
PyObject * temp =
PyObject_CallObject
(callback, arguments);
if
( arguments != args ) {
Py_XDECREF
(arguments);
}
if
( temp ) {
debug
(
"
Callback succeeded
\n
"
);
Py_DECREF
(temp);
}
else
{
debug
(
"
Callback failed
\n
"
);
Py_DECREF
(Py_None);
return
NULL
;
}
}
i++;
}
return
result;
}
static
PyObject *
transmit
(PyObject * self, PyObject * args) {
unsigned
char
initiator =
'
g
'
;
unsigned
char
destination;
unsigned
char
opcode;
const
char
* params =
NULL
;
Py_ssize_t param_count =
0
;
if
(
PyArg_ParseTuple
(args,
"
bb|s#b:transmit
"
, &destination, &opcode,
¶ms, ¶m_count, &initiator) ) {
if
( destination <
0
|| destination >
15
) {
PyErr_SetString
(PyExc_ValueError,
"
Logical address must be between 0 and 15
"
);
return
NULL
;
}
if
( initiator !=
'
g
'
) {
if
( initiator <
0
|| initiator >
15
) {
PyErr_SetString
(PyExc_ValueError,
"
Logical address must be between 0 and 15
"
);
return
NULL
;
}
}
else
{
initiator = CEC_adapter->
GetLogicalAddresses
().
primary
;
}
if
( param_count >
CEC_MAX_DATA_PACKET_SIZE
) {
char
errstr[
1024
];
snprintf
(errstr,
1024
,
"
Too many parameters, maximum is %d
"
,
CEC_MAX_DATA_PACKET_SIZE
);
PyErr_SetString
(PyExc_ValueError, errstr);
return
NULL
;
}
cec_command data;
bool
success;
Py_BEGIN_ALLOW_THREADS
data.
initiator
= (cec_logical_address)initiator;
data.
destination
= (cec_logical_address)destination;
data.
opcode
= (cec_opcode)opcode;
data.
opcode_set
=
1
;
if
( params ) {
for
( Py_ssize_t i=
0
; i<param_count; i++ ) {
data.
PushBack
(((
uint8_t
*)params)[i]);
}
}
success = CEC_adapter->
Transmit
(data);
Py_END_ALLOW_THREADS
RETURN_BOOL
(success);
}
return
NULL
;
}
static
PyObject *
is_active_source
(PyObject * self, PyObject * args) {
unsigned
char
addr;
if
(
PyArg_ParseTuple
(args,
"
b:is_active_source
"
, &addr) ) {
if
( addr <
0
|| addr >
15
) {
PyErr_SetString
(PyExc_ValueError,
"
Logical address must be between 0 and 15
"
);
return
NULL
;
}
else
{
RETURN_BOOL
(CEC_adapter->
IsActiveSource
((cec_logical_address)addr));
}
}
return
NULL
;
}
static
PyObject *
set_active_source
(PyObject * self, PyObject * args) {
unsigned
char
devtype = (
unsigned
char
)
CEC_DEVICE_TYPE_RESERVED
;
if
(
PyArg_ParseTuple
(args,
"
|b:set_active_source
"
, &devtype) ) {
if
( devtype <
0
|| devtype >
5
) {
PyErr_SetString
(PyExc_ValueError,
"
Device type must be between 0 and 5
"
);
return
NULL
;
}
else
{
RETURN_BOOL
(CEC_adapter->
SetActiveSource
((cec_device_type)devtype));
}
}
return
NULL
;
}
static
PyObject *
volume_up
(PyObject * self, PyObject * args) {
if
(
PyArg_ParseTuple
(args,
"
:volume_up
"
) )
RETURN_BOOL
(CEC_adapter->
VolumeUp
());
return
NULL
;
}
static
PyObject *
volume_down
(PyObject * self, PyObject * args) {
if
(
PyArg_ParseTuple
(args,
"
:volume_up
"
) )
RETURN_BOOL
(CEC_adapter->
VolumeDown
());
return
NULL
;
}
#
if
CEC_LIB_VERSION_MAJOR > 1
static
PyObject *
toggle_mute
(PyObject * self, PyObject * args) {
if
(
PyArg_ParseTuple
(args,
"
:toggle_mute
"
) )
RETURN_BOOL
(CEC_adapter->
AudioToggleMute
());
return
NULL
;
}
#
endif
static
PyObject *
set_stream_path
(PyObject * self, PyObject * args) {
PyObject * arg;
if
(
PyArg_ParseTuple
(args,
"
O:set_stream_path
"
, &arg) ) {
Py_INCREF
(arg);
#
if
PY_MAJOR_VERSION >= 3
if
(
PyLong_Check
(arg)) {
long
arg_l =
PyLong_AsLong
(arg);
#
else
if
(
PyInt_Check
(arg)) {
long
arg_l =
PyInt_AsLong
(arg);
#endif
Py_DECREF
(arg);
if
( arg_l <
0
|| arg_l >
15
) {
PyErr_SetString
(PyExc_ValueError,
"
Logical address must be between 0 and 15
"
);
return
NULL
;
}
else
{
RETURN_BOOL
(CEC_adapter->
SetStreamPath
((cec_logical_address)arg_l));
}
#
if
PY_MAJOR_VERSION >= 3
}
else
if
(
PyUnicode_Check
(arg)) {
const
char
* arg_s =
PyUnicode_AsUTF8
(arg);
#
else
}
else
if
(
PyString_Check
(arg)) {
char
* arg_s =
PyString_AsString
(arg);
#endif
if
( arg_s ) {
int
pa =
parse_physical_addr
(arg_s);
Py_DECREF
(arg);
if
( pa <
0
) {
PyErr_SetString
(PyExc_ValueError,
"
Invalid physical address
"
);
return
NULL
;
}
else
{
RETURN_BOOL
(CEC_adapter->
SetStreamPath
((
uint16_t
)pa));
}
}
else
{
Py_DECREF
(arg);
return
NULL
;
}
}
else
if
(
PyUnicode_Check
(arg)) {
//
Convert from Unicode to ASCII
PyObject* ascii_arg =
PyUnicode_AsASCIIString
(arg);
if
(
NULL
== ascii_arg) {
//
Means the string can't be converted to ASCII, the codec failed
PyErr_SetString
(PyExc_ValueError,
"
Could not convert address to ASCII
"
);
return
NULL
;
}
//
Get the actual bytes as a C string
char
* arg_s =
PyByteArray_AsString
(ascii_arg);
if
( arg_s ) {
int
pa =
parse_physical_addr
(arg_s);
Py_DECREF
(arg);
if
( pa <
0
) {
PyErr_SetString
(PyExc_ValueError,
"
Invalid physical address
"
);
return
NULL
;
}
else
{
RETURN_BOOL
(CEC_adapter->
SetStreamPath
((
uint16_t
)pa));
}
}
else
{
Py_DECREF
(arg);
return
NULL
;
}
}
else
{
PyErr_SetString
(PyExc_TypeError,
"
parameter must be string or int
"
);
return
NULL
;
}
}
return
NULL
;
}
PyObject *
set_physical_addr
(PyObject * self, PyObject * args) {
char
* addr_s;
if
(
PyArg_ParseTuple
(args,
"
s:set_physical_addr
"
, &addr_s) ) {
int
addr =
parse_physical_addr
(addr_s);
if
( addr >=
0
) {
RETURN_BOOL
(CEC_adapter->
SetPhysicalAddress
((
uint16_t
)addr));
}
else
{
PyErr_SetString
(PyExc_ValueError,
"
Invalid physical address
"
);
return
NULL
;
}
}
return
NULL
;
}
PyObject *
set_port
(PyObject * self, PyObject * args) {
unsigned
char
dev, port;
if
(
PyArg_ParseTuple
(args,
"
bb
"
, &dev, &port) ) {
if
( dev >
15
) {
PyErr_SetString
(PyExc_ValueError,
"
Invalid logical address
"
);
return
NULL
;
}
if
( port >
15
) {
PyErr_SetString
(PyExc_ValueError,
"
Invalid port
"
);
return
NULL
;
}
RETURN_BOOL
(CEC_adapter->
SetHDMIPort
((cec_logical_address)dev, port));
}
return
NULL
;
}
PyObject *
can_persist_config
(PyObject * self, PyObject * args) {
if
(
PyArg_ParseTuple
(args,
"
:can_persist_config
"
) ) {
#
if
CEC_LIB_VERSION_MAJOR >= 5
RETURN_BOOL
(CEC_adapter->
CanSaveConfiguration
());
#
else
RETURN_BOOL
(CEC_adapter->
CanPersistConfiguration
());
#
endif
}
return
NULL
;
}
PyObject *
persist_config
(PyObject * self, PyObject * args) {
if
(
PyArg_ParseTuple
(args,
"
:persist_config
"
) ) {
#
if
CEC_LIB_VERSION_MAJOR >= 5
if
( ! CEC_adapter->
CanSaveConfiguration
() ) {
#
else
if
( ! CEC_adapter->
CanPersistConfiguration
() ) {
#endif
PyErr_SetString
(PyExc_NotImplementedError,
"
Cannot persist configuration
"
);
return
NULL
;
}
libcec_configuration config;
if
( ! CEC_adapter->
GetCurrentConfiguration
(&config) ) {
PyErr_SetString
(PyExc_IOError,
"
Could not get configuration
"
);
return
NULL
;
}
#
if
CEC_LIB_VERSION_MAJOR >= 5
RETURN_BOOL
(CEC_adapter->
SetConfiguration
(&config));
#
else
RETURN_BOOL
(CEC_adapter->
PersistConfiguration
(&config));
#
endif
}
return
NULL
;
}
static
PyMethodDef CecMethods[] = {
{
"
list_adapters
"
, list_adapters,
METH_VARARGS
,
"
List available adapters
"
},
{
"
init
"
, init,
METH_VARARGS
,
"
Open an adapter
"
},
{
"
close
"
, close,
METH_NOARGS
,
"
Close an adapter
"
},
{
"
list_devices
"
, list_devices,
METH_VARARGS
,
"
List devices
"
},
{
"
add_callback
"
, add_callback,
METH_VARARGS
,
"
Add a callback
"
},
{
"
remove_callback
"
, remove_callback,
METH_VARARGS
,
"
Remove a callback
"
},
{
"
transmit
"
, transmit,
METH_VARARGS
,
"
Transmit a raw CEC command
"
},
{
"
is_active_source
"
, is_active_source,
METH_VARARGS
,
"
Check active source
"
},
{
"
set_active_source
"
, set_active_source,
METH_VARARGS
,
"
Set active source
"
},
{
"
volume_up
"
, volume_up,
METH_VARARGS
,
"
Volume Up
"
},
{
"
volume_down
"
, volume_down,
METH_VARARGS
,
"
Volume Down
"
},
#
if
CEC_LIB_VERSION_MAJOR > 1
{
"
toggle_mute
"
, toggle_mute,
METH_VARARGS
,
"
Toggle Mute
"
},
#
endif
{
"
set_stream_path
"
, set_stream_path,
METH_VARARGS
,
"
Set HDMI stream path
"
},
{
"
set_physical_addr
"
, set_physical_addr,
METH_VARARGS
,
"
Set HDMI physical address
"
},
{
"
can_persist_config
"
, can_persist_config,
METH_VARARGS
,
"
return true if the current adapter can persist the CEC configuration
"
},
{
"
persist_config
"
, persist_config,
METH_VARARGS
,
"
persist CEC configuration to adapter
"
},
{
"
set_port
"
, set_port,
METH_VARARGS
,
"
Set upstream HDMI port
"
},
{
NULL
,
NULL
,
0
,
NULL
}
};
libcec_configuration * CEC_config;
ICECCallbacks * CEC_callbacks;
#
if
CEC_LIB_VERSION_MAJOR >= 4
void
log_cb
(
void
* self,
const
cec_log_message* message) {
#
else
int
log_cb
(
void
* self,
const
cec_log_message message) {
#endif
debug
(
"
got log callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
#
if
CEC_LIB_VERSION_MAJOR >= 4
int
level = message->
level
;
long
int
time = message->
time
;
const
char
* msg = message->
message
;
#
else
int
level = message.
level
;
long
int
time = message.
time
;
const
char
* msg = message.
message
;
#
endif
//
decode message ignoring invalid characters
PyObject * umsg =
PyUnicode_DecodeASCII
(msg,
strlen
(msg),
"
ignore
"
);
PyObject * args =
Py_BuildValue
(
"
(iilO)
"
,
EVENT_LOG
,
level,
time,
umsg);
if
( args ) {
trigger_event
(
EVENT_LOG
, args);
Py_DECREF
(args);
}
Py_XDECREF
(umsg);
PyGILState_Release
(gstate);
#
if
CEC_LIB_VERSION_MAJOR >= 4
return
;
#
else
return
1
;
#
endif
}
#
if
CEC_LIB_VERSION_MAJOR >= 4
void
keypress_cb
(
void
* self,
const
cec_keypress* key) {
#
else
int
keypress_cb
(
void
* self,
const
cec_keypress key) {
#endif
debug
(
"
got keypress callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
#
if
CEC_LIB_VERSION_MAJOR >= 4
cec_user_control_code keycode = key->
keycode
;
unsigned
int
duration = key->
duration
;
#
else
cec_user_control_code keycode = key.
keycode
;
unsigned
int
duration = key.
duration
;
#
endif
PyObject * args =
Py_BuildValue
(
"
(iBI)
"
,
EVENT_KEYPRESS
,
keycode,
duration);
if
( args ) {
trigger_event
(
EVENT_KEYPRESS
, args);
Py_DECREF
(args);
}
PyGILState_Release
(gstate);
#
if
CEC_LIB_VERSION_MAJOR >= 4
return
;
#
else
return
1
;
#
endif
}
static
PyObject *
convert_cmd
(
const
cec_command* cmd) {
#
if
PY_MAJOR_VERSION >= 3
return
Py_BuildValue
(
"
{sBsBsOsOsBsy#sOsi}
"
,
#
else
return
Py_BuildValue
(
"
{sBsBsOsOsBss#sOsi}
"
,
#
endif
"
initiator
"
, cmd->
initiator
,
"
destination
"
, cmd->
destination
,
"
ack
"
, cmd->
ack
? Py_True : Py_False,
"
eom
"
, cmd->
eom
? Py_True : Py_False,
"
opcode
"
, cmd->
opcode
,
"
parameters
"
, cmd->
parameters
.
data
, cmd->
parameters
.
size
,
"
opcode_set
"
, cmd->
opcode_set
? Py_True : Py_False,
"
transmit_timeout
"
, cmd->
transmit_timeout
);
}
#
if
CEC_LIB_VERSION_MAJOR >= 4
void
command_cb
(
void
* self,
const
cec_command* command) {
#
else
int
command_cb
(
void
* self,
const
cec_command command) {
#endif
debug
(
"
got command callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
#
if
CEC_LIB_VERSION_MAJOR >= 4
const
cec_command * cmd = command;
#
else
const
cec_command * cmd = &command;
#
endif
PyObject * args =
Py_BuildValue
(
"
(iO&)
"
,
EVENT_COMMAND
, convert_cmd, cmd);
if
( args ) {
trigger_event
(
EVENT_COMMAND
, args);
Py_DECREF
(args);
}
PyGILState_Release
(gstate);
#
if
CEC_LIB_VERSION_MAJOR >= 4
return
;
#
else
return
1
;
#
endif
}
#
if
CEC_LIB_VERSION_MAJOR >= 4
void
config_cb
(
void
* self,
const
libcec_configuration*) {
#
else
int
config_cb
(
void
* self,
const
libcec_configuration) {
#endif
debug
(
"
got config callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
//
TODO: figure out how to pass these as parameters
//
yeah... right.
//
we'll probably have to come up with some functions for converting the
//
libcec_configuration class into a python Object
//
this will probably be _lots_ of work and should probably wait until
//
a later release, or when it becomes necessary.
PyObject * args =
Py_BuildValue
(
"
(i)
"
,
EVENT_CONFIG_CHANGE
);
if
( args ) {
//
don't bother triggering an event until we can actually pass arguments
//
trigger_event(EVENT_CONFIG_CHANGE, args);
Py_DECREF
(args);
}
PyGILState_Release
(gstate);
#
if
CEC_LIB_VERSION_MAJOR >= 4
return
;
#
else
return
1
;
#
endif
}
#
if
CEC_LIB_VERSION_MAJOR >= 4
void
alert_cb
(
void
* self,
const
libcec_alert alert,
const
libcec_parameter p) {
#
else
int
alert_cb
(
void
* self,
const
libcec_alert alert,
const
libcec_parameter p) {
#endif
debug
(
"
got alert callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
PyObject * param = Py_None;
if
( p.
paramType
==
CEC_PARAMETER_TYPE_STRING
) {
param =
Py_BuildValue
(
"
s
"
, p.
paramData
);
}
else
{
Py_INCREF
(param);
}
PyObject * args =
Py_BuildValue
(
"
(iiN)
"
,
EVENT_ALERT
, alert, param);
if
( args ) {
trigger_event
(
EVENT_ALERT
, args);
Py_DECREF
(args);
}
PyGILState_Release
(gstate);
#
if
CEC_LIB_VERSION_MAJOR >= 4
return
;
#
else
return
1
;
#
endif
}
int
menu_cb
(
void
* self,
const
cec_menu_state menu) {
debug
(
"
got menu callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
PyObject * args =
Py_BuildValue
(
"
(ii)
"
,
EVENT_MENU_CHANGED
, menu);
if
( args ) {
trigger_event
(
EVENT_MENU_CHANGED
, args);
Py_DECREF
(args);
}
PyGILState_Release
(gstate);
return
1
;
}
void
activated_cb
(
void
* self,
const
cec_logical_address logical_address,
const
uint8_t
state) {
debug
(
"
got activated callback
\n
"
);
PyGILState_STATE gstate;
gstate =
PyGILState_Ensure
();
PyObject * active = (state ==
1
) ? Py_True : Py_False;
PyObject * args =
Py_BuildValue
(
"
(iOi)
"
,
EVENT_ACTIVATED
, active,
logical_address);
if
( args ) {
trigger_event
(
EVENT_ACTIVATED
, args);
Py_DECREF
(args);
}
PyGILState_Release
(gstate);
return
;
}
#
if
PY_MAJOR_VERSION >= 3
static
struct
PyModuleDef
moduledef = {
PyModuleDef_HEAD_INIT,
"
cec
"
,
NULL
,
-
1
,
CecMethods,
NULL
,
NULL
,
NULL
,
NULL
};
#
endif
#
if
PY_MAJOR_VERSION >= 3
#
define
INITERROR
return
NULL
#
else
#
define
INITERROR
return
#
endif
#
if
PY_MAJOR_VERSION >= 3
PyMODINIT_FUNC
PyInit_cec
(
void
) {
#
else
PyMODINIT_FUNC
initcec
(
void
) {
#endif
//
Make sure threads are enabled in the python interpreter
//
this also acquires the global interpreter lock
PyEval_InitThreads
();
//
set up libcec
//
libcec config
CEC_config =
new
libcec_configuration
();
CEC_config->
Clear
();
snprintf
(CEC_config->
strDeviceName
,
13
,
"
python-cec
"
);
//
CEC_CLIENT_VERSION_CURRENT was introduced in 2.0.4
//
just use 2.1.0 because the conditional is simpler
#
if
CEC_LIB_VERSION_MAJOR >= 3
CEC_config->
clientVersion
=
LIBCEC_VERSION_CURRENT
;
#
elif
CEC_LIB_VERSION_MAJOR >= 2 && CEC_LIB_VERSION_MINOR >= 1
CEC_config->
clientVersion
=
CEC_CLIENT_VERSION_CURRENT
;
#
else
//
fall back to 1.6.0 since it's the lowest common denominator shipped with
//
Ubuntu
CEC_config->
clientVersion
=
CEC_CLIENT_VERSION_1_6_0
;
#
endif
CEC_config->
bActivateSource
=
0
;
CEC_config->
deviceTypes
.
Add
(
CEC_DEVICE_TYPE_RECORDING_DEVICE
);
//
libcec callbacks
CEC_callbacks =
new
ICECCallbacks
();
#
if
CEC_LIB_VERSION_MAJOR > 1 || ( CEC_LIB_VERSION_MAJOR == 1 && CEC_LIB_VERSION_MINOR >= 7 )
CEC_callbacks->
Clear
();
#
endif
#
if
CEC_LIB_VERSION_MAJOR >= 4
CEC_callbacks->
logMessage
= log_cb;
CEC_callbacks->
keyPress
= keypress_cb;
CEC_callbacks->
commandReceived
= command_cb;
CEC_callbacks->
configurationChanged
= config_cb;
CEC_callbacks->
alert
= alert_cb;
CEC_callbacks->
menuStateChanged
= menu_cb;
CEC_callbacks->
sourceActivated
= activated_cb;
#
else
CEC_callbacks->
CBCecLogMessage
= log_cb;
CEC_callbacks->
CBCecKeyPress
= keypress_cb;
CEC_callbacks->
CBCecCommand
= command_cb;
CEC_callbacks->
CBCecConfigurationChanged
= config_cb;
CEC_callbacks->
CBCecAlert
= alert_cb;
CEC_callbacks->
CBCecMenuStateChanged
= menu_cb;
CEC_callbacks->
CBCecSourceActivated
= activated_cb;
#
endif
CEC_config->
callbacks
= CEC_callbacks;
CEC_adapter = (ICECAdapter*)
CECInitialise
(CEC_config);
if
( !CEC_adapter ) {
PyErr_SetString
(PyExc_IOError,
"
Failed to initialize libcec
"
);
INITERROR
;
}
#
if
CEC_LIB_VERSION_MAJOR > 1 || ( CEC_LIB_VERSION_MAJOR == 1 && CEC_LIB_VERSION_MINOR >= 8 )
CEC_adapter->
InitVideoStandalone
();
#
endif
//
set up python module
PyTypeObject * dev =
DeviceTypeInit
(CEC_adapter);
Device = (PyObject*)dev;
if
(
PyType_Ready
(dev) <
0
)
INITERROR
;
#
if
PY_MAJOR_VERSION >= 3
PyObject * m =
PyModule_Create
(&moduledef);
#
else
PyObject * m =
Py_InitModule
(
"
cec
"
, CecMethods);
#
endif
if
( m ==
NULL
)
INITERROR
;
Py_INCREF
(dev);
PyModule_AddObject
(m,
"
Device
"
, (PyObject*)dev);
//
constants for event types
PyModule_AddIntMacro
(m,
EVENT_LOG
);
PyModule_AddIntMacro
(m,
EVENT_KEYPRESS
);
PyModule_AddIntMacro
(m,
EVENT_COMMAND
);
PyModule_AddIntMacro
(m,
EVENT_CONFIG_CHANGE
);
PyModule_AddIntMacro
(m,
EVENT_ALERT
);
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