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def _deserialize_encrypted_data_keys ( stream ) : ( encrypted_data_key_count , ) = unpack_values ( ">H" , stream ) encrypted_data_keys = set ( [ ] ) for _ in range ( encrypted_data_key_count ) : ( key_provider_length , ) = unpack_values ( ">H" , stream ) ( key_provider_identifier , ) = unpack_values ( ">{}s" . format (...
Deserialize some encrypted data keys from a stream .
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def _verified_iv_length ( iv_length , algorithm_suite ) : if iv_length != algorithm_suite . iv_len : raise SerializationError ( "Specified IV length ({length}) does not match algorithm IV length ({algorithm})" . format ( length = iv_length , algorithm = algorithm_suite ) ) return iv_length
Verify an IV length for an algorithm suite .
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def _verified_frame_length ( frame_length , content_type ) : if content_type == ContentType . FRAMED_DATA and frame_length > MAX_FRAME_SIZE : raise SerializationError ( "Specified frame length larger than allowed maximum: {found} > {max}" . format ( found = frame_length , max = MAX_FRAME_SIZE ) ) if content_type == Con...
Verify a frame length value for a message content type .
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def deserialize_header ( stream ) : _LOGGER . debug ( "Starting header deserialization" ) tee = io . BytesIO ( ) tee_stream = TeeStream ( stream , tee ) version_id , message_type_id = unpack_values ( ">BB" , tee_stream ) header = dict ( ) header [ "version" ] = _verified_version_from_id ( version_id ) header [ "type" ]...
Deserializes the header from a source stream
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def deserialize_header_auth ( stream , algorithm , verifier = None ) : _LOGGER . debug ( "Starting header auth deserialization" ) format_string = ">{iv_len}s{tag_len}s" . format ( iv_len = algorithm . iv_len , tag_len = algorithm . tag_len ) return MessageHeaderAuthentication ( * unpack_values ( format_string , stream ...
Deserializes a MessageHeaderAuthentication object from a source stream .
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def deserialize_non_framed_values ( stream , header , verifier = None ) : _LOGGER . debug ( "Starting non-framed body iv/tag deserialization" ) ( data_iv , data_length ) = unpack_values ( ">{}sQ" . format ( header . algorithm . iv_len ) , stream , verifier ) return data_iv , data_length
Deserializes the IV and body length from a non - framed stream .
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def deserialize_tag ( stream , header , verifier = None ) : ( data_tag , ) = unpack_values ( format_string = ">{auth_len}s" . format ( auth_len = header . algorithm . auth_len ) , stream = stream , verifier = verifier ) return data_tag
Deserialize the Tag value from a non - framed stream .
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def deserialize_frame ( stream , header , verifier = None ) : _LOGGER . debug ( "Starting frame deserialization" ) frame_data = { } final_frame = False ( sequence_number , ) = unpack_values ( ">I" , stream , verifier ) if sequence_number == SequenceIdentifier . SEQUENCE_NUMBER_END . value : _LOGGER . debug ( "Deseriali...
Deserializes a frame from a body .
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def deserialize_footer ( stream , verifier = None ) : _LOGGER . debug ( "Starting footer deserialization" ) signature = b"" if verifier is None : return MessageFooter ( signature = signature ) try : ( sig_len , ) = unpack_values ( ">H" , stream ) ( signature , ) = unpack_values ( ">{sig_len}s" . format ( sig_len = sig_...
Deserializes a footer .
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def deserialize_wrapped_key ( wrapping_algorithm , wrapping_key_id , wrapped_encrypted_key ) : if wrapping_key_id == wrapped_encrypted_key . key_provider . key_info : encrypted_wrapped_key = EncryptedData ( iv = None , ciphertext = wrapped_encrypted_key . encrypted_data_key , tag = None ) else : if not wrapped_encrypte...
Extracts and deserializes EncryptedData from a Wrapped EncryptedDataKey .
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def validate_frame_length ( frame_length , algorithm ) : if frame_length < 0 or frame_length % algorithm . encryption_algorithm . block_size != 0 : raise SerializationError ( "Frame size must be a non-negative multiple of the block size of the crypto algorithm: {block_size}" . format ( block_size = algorithm . encrypti...
Validates that frame length is within the defined limits and is compatible with the selected algorithm .
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def get_aad_content_string ( content_type , is_final_frame ) : if content_type == ContentType . NO_FRAMING : aad_content_string = ContentAADString . NON_FRAMED_STRING_ID elif content_type == ContentType . FRAMED_DATA : if is_final_frame : aad_content_string = ContentAADString . FINAL_FRAME_STRING_ID else : aad_content_...
Prepares the appropriate Body AAD Value for a message body .
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def prepare_data_keys ( primary_master_key , master_keys , algorithm , encryption_context ) : encrypted_data_keys = set ( ) encrypted_data_encryption_key = None data_encryption_key = primary_master_key . generate_data_key ( algorithm , encryption_context ) _LOGGER . debug ( "encryption data generated with master key: %...
Prepares a DataKey to be used for encrypting message and list of EncryptedDataKey objects to be serialized into header .
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def prep_stream_data ( data ) : if isinstance ( data , ( six . string_types , six . binary_type ) ) : stream = io . BytesIO ( to_bytes ( data ) ) else : stream = data return InsistentReaderBytesIO ( stream )
Take an input and prepare it for use as a stream .
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def source_data_key_length_check ( source_data_key , algorithm ) : if len ( source_data_key . data_key ) != algorithm . kdf_input_len : raise InvalidDataKeyError ( "Invalid Source Data Key length {actual} for algorithm required: {required}" . format ( actual = len ( source_data_key . data_key ) , required = algorithm ....
Validates that the supplied source_data_key s data_key is the correct length for the supplied algorithm s kdf_input_len value .
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def encrypt ( algorithm , key , plaintext , associated_data , iv ) : encryptor = Encryptor ( algorithm , key , associated_data , iv ) ciphertext = encryptor . update ( plaintext ) + encryptor . finalize ( ) return EncryptedData ( encryptor . iv , ciphertext , encryptor . tag )
Encrypts a frame body .
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def decrypt ( algorithm , key , encrypted_data , associated_data ) : decryptor = Decryptor ( algorithm , key , associated_data , encrypted_data . iv , encrypted_data . tag ) return decryptor . update ( encrypted_data . ciphertext ) + decryptor . finalize ( )
Decrypts a frame body .
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def _master_key_provider ( ) -> KMSMasterKeyProvider : master_key_provider = KMSMasterKeyProvider ( ) master_key_provider . add_master_key_provider ( NullMasterKey ( ) ) master_key_provider . add_master_key_provider ( CountingMasterKey ( ) ) return master_key_provider
Build the V0 master key provider .
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def basic_decrypt ( ) -> Response : APP . log . debug ( "Request:" ) APP . log . debug ( json . dumps ( APP . current_request . to_dict ( ) ) ) APP . log . debug ( "Ciphertext:" ) APP . log . debug ( APP . current_request . raw_body ) try : ciphertext = APP . current_request . raw_body plaintext , _header = aws_encrypt...
Basic decrypt handler for decrypt oracle v0 .
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def read ( self , b = None ) : data = self . __wrapped__ . read ( b ) self . __tee . write ( data ) return data
Reads data from source copying it into tee before returning .
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def read ( self , b = - 1 ) : remaining_bytes = b data = io . BytesIO ( ) while True : try : chunk = to_bytes ( self . __wrapped__ . read ( remaining_bytes ) ) except ValueError : if self . __wrapped__ . closed : break raise if not chunk : break data . write ( chunk ) remaining_bytes -= len ( chunk ) if remaining_bytes...
Keep reading from source stream until either the source stream is done or the requested number of bytes have been obtained .
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def _ecc_static_length_signature ( key , algorithm , digest ) : pre_hashed_algorithm = ec . ECDSA ( Prehashed ( algorithm . signing_hash_type ( ) ) ) signature = b"" while len ( signature ) != algorithm . signature_len : _LOGGER . debug ( "Signature length %d is not desired length %d. Recalculating." , len ( signature...
Calculates an elliptic curve signature with a static length using pre - calculated hash .
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def generate_ecc_signing_key ( algorithm ) : try : verify_interface ( ec . EllipticCurve , algorithm . signing_algorithm_info ) return ec . generate_private_key ( curve = algorithm . signing_algorithm_info ( ) , backend = default_backend ( ) ) except InterfaceNotImplemented : raise NotSupportedError ( "Unsupported sign...
Returns an ECC signing key .
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def derive_data_encryption_key ( source_key , algorithm , message_id ) : key = source_key if algorithm . kdf_type is not None : key = algorithm . kdf_type ( algorithm = algorithm . kdf_hash_type ( ) , length = algorithm . data_key_len , salt = None , info = struct . pack ( ">H16s" , algorithm . algorithm_id , message_i...
Derives the data encryption key using the defined algorithm .
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def encrypt ( ** kwargs ) : with StreamEncryptor ( ** kwargs ) as encryptor : ciphertext = encryptor . read ( ) return ciphertext , encryptor . header
Encrypts and serializes provided plaintext .
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def decrypt ( ** kwargs ) : with StreamDecryptor ( ** kwargs ) as decryptor : plaintext = decryptor . read ( ) return plaintext , decryptor . header
Deserializes and decrypts provided ciphertext .
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def cycle_file ( key_arn , source_plaintext_filename , botocore_session = None ) : ciphertext_filename = source_plaintext_filename + ".encrypted" cycled_kms_plaintext_filename = source_plaintext_filename + ".kms.decrypted" cycled_static_plaintext_filename = source_plaintext_filename + ".static.decrypted" kms_kwargs = d...
Encrypts and then decrypts a file using a KMS master key provider and a custom static master key provider . Both master key providers are used to encrypt the plaintext file so either one alone can decrypt it .
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def _get_raw_key ( self , key_id ) : try : static_key = self . _static_keys [ key_id ] except KeyError : private_key = rsa . generate_private_key ( public_exponent = 65537 , key_size = 4096 , backend = default_backend ( ) ) static_key = private_key . private_bytes ( encoding = serialization . Encoding . PEM , format = ...
Retrieves a static randomly generated RSA key for the specified key id .
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def month_boundaries ( dt = None ) : dt = dt or date . today ( ) wkday , ndays = calendar . monthrange ( dt . year , dt . month ) start = datetime ( dt . year , dt . month , 1 ) return ( start , start + timedelta ( ndays - 1 ) )
Return a 2 - tuple containing the datetime instances for the first and last dates of the current month or using dt as a reference .
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def css_class_cycler ( ) : FMT = 'evt-{0}-{1}' . format return defaultdict ( default_css_class_cycler , ( ( e . abbr , itertools . cycle ( ( FMT ( e . abbr , 'even' ) , FMT ( e . abbr , 'odd' ) ) ) ) for e in EventType . objects . all ( ) ) )
Return a dictionary keyed by EventType abbreviations whose values are an iterable or cycle of CSS class names .
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def create_event ( title , event_type , description = '' , start_time = None , end_time = None , note = None , ** rrule_params ) : if isinstance ( event_type , tuple ) : event_type , created = EventType . objects . get_or_create ( abbr = event_type [ 0 ] , label = event_type [ 1 ] ) event = Event . objects . create ( t...
Convenience function to create an Event optionally create an EventType and associated Occurrence s . Occurrence creation rules match those for Event . add_occurrences .
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def add_occurrences ( self , start_time , end_time , ** rrule_params ) : count = rrule_params . get ( 'count' ) until = rrule_params . get ( 'until' ) if not ( count or until ) : self . occurrence_set . create ( start_time = start_time , end_time = end_time ) else : rrule_params . setdefault ( 'freq' , rrule . DAILY ) ...
Add one or more occurences to the event using a comparable API to dateutil . rrule .
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def daily_occurrences ( self , dt = None ) : return Occurrence . objects . daily_occurrences ( dt = dt , event = self )
Convenience method wrapping Occurrence . objects . daily_occurrences .
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def daily_occurrences ( self , dt = None , event = None ) : dt = dt or datetime . now ( ) start = datetime ( dt . year , dt . month , dt . day ) end = start . replace ( hour = 23 , minute = 59 , second = 59 ) qs = self . filter ( models . Q ( start_time__gte = start , start_time__lte = end , ) | models . Q ( end_time__...
Returns a queryset of for instances that have any overlap with a particular day .
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def event_listing ( request , template = 'swingtime/event_list.html' , events = None , ** extra_context ) : events = events or Event . objects . all ( ) extra_context [ 'events' ] = events return render ( request , template , extra_context )
View all events .
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def event_view ( request , pk , template = 'swingtime/event_detail.html' , event_form_class = forms . EventForm , recurrence_form_class = forms . MultipleOccurrenceForm ) : event = get_object_or_404 ( Event , pk = pk ) event_form = recurrence_form = None if request . method == 'POST' : if '_update' in request . POST : ...
View an Event instance and optionally update either the event or its occurrences .
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def occurrence_view ( request , event_pk , pk , template = 'swingtime/occurrence_detail.html' , form_class = forms . SingleOccurrenceForm ) : occurrence = get_object_or_404 ( Occurrence , pk = pk , event__pk = event_pk ) if request . method == 'POST' : form = form_class ( request . POST , instance = occurrence ) if for...
View a specific occurrence and optionally handle any updates .
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def add_event ( request , template = 'swingtime/add_event.html' , event_form_class = forms . EventForm , recurrence_form_class = forms . MultipleOccurrenceForm ) : dtstart = None if request . method == 'POST' : event_form = event_form_class ( request . POST ) recurrence_form = recurrence_form_class ( request . POST ) i...
Add a new Event instance and 1 or more associated Occurrence s .
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def _datetime_view ( request , template , dt , timeslot_factory = None , items = None , params = None ) : timeslot_factory = timeslot_factory or utils . create_timeslot_table params = params or { } return render ( request , template , { 'day' : dt , 'next_day' : dt + timedelta ( days = + 1 ) , 'prev_day' : dt + timedel...
Build a time slot grid representation for the given datetime dt . See utils . create_timeslot_table documentation for items and params .
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def month_view ( request , year , month , template = 'swingtime/monthly_view.html' , queryset = None ) : year , month = int ( year ) , int ( month ) cal = calendar . monthcalendar ( year , month ) dtstart = datetime ( year , month , 1 ) last_day = max ( cal [ - 1 ] ) dtend = datetime ( year , month , last_day ) queryse...
Render a tradional calendar grid view with temporal navigation variables .
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def cast ( self , value , custom_formatters = None , strict = True ) : if value is None : if not self . nullable : raise InvalidSchemaValue ( "Null value for non-nullable schema" , value , self . type ) return self . default cast_mapping = self . get_cast_mapping ( custom_formatters = custom_formatters , strict = stric...
Cast value to schema type
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def unmarshal ( self , value , custom_formatters = None , strict = True ) : if self . deprecated : warnings . warn ( "The schema is deprecated" , DeprecationWarning ) casted = self . cast ( value , custom_formatters = custom_formatters , strict = strict ) if casted is None and not self . required : return None if self ...
Unmarshal parameter from the value .
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def get_operation_pattern ( server_url , request_url_pattern ) : if server_url [ - 1 ] == "/" : server_url = server_url [ : - 1 ] if is_absolute ( server_url ) : return request_url_pattern . replace ( server_url , "" , 1 ) return path_qs ( request_url_pattern ) . replace ( server_url , "" , 1 )
Return an updated request URL pattern with the server URL removed .
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def check ( definition , data , * args , ** kwargs ) : checker = checker_factory ( definition ) return checker ( data , * args , ** kwargs )
Checks if the input follows the definition
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def check ( self , data ) : if isinstance ( data , Iterable ) : data = "" . join ( str ( x ) for x in data ) try : data = str ( data ) except UnicodeDecodeError : return False return bool ( data and self . __regexp . match ( data ) )
returns True if any match any regexp
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def _build_item_closure ( itemset , productionset ) : if not isinstance ( itemset , LR0ItemSet ) : raise TypeError import copy resultset = copy . copy ( itemset ) changed = True while changed : changed = False for currentitem in resultset . itemlist : nextsymbol = currentitem . next_symbol ( ) if nextsymbol is None : b...
Build input itemset closure
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def item_set_goto ( itemset , inputsymbol , productionset ) : resultset = LR0ItemSet ( ) for item in itemset . itemlist : if item . next_symbol ( ) == inputsymbol : newitem = LR0Item ( item . rule , item . position + 1 ) resultset . append_item ( newitem ) return _build_item_closure ( resultset , productionset )
returns an itemset locate inside itemset every element with inputsymbol following cursor for every located item append its itemclosure
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def _slr_build_parser_table ( productionset ) : result = ParserTable ( ) statesset = build_states_sets ( productionset ) for itemindex , itemset in enumerate ( statesset ) : LOG . debug ( "_slr_build_parser_table: Evaluating itemset:" + str ( itemset ) ) for symbol in productionset . getSymbols ( ) + [ EndSymbol ( ) ] ...
SLR method to build parser table
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def append ( self , state , symbol , action , destinationstate , production = None ) : if action not in ( None , "Accept" , "Shift" , "Reduce" ) : raise TypeError rule = { "action" : action , "dest" : destinationstate } if action == "Reduce" : if rule is None : raise TypeError ( "Expected production parameter" ) rule [...
Appends a new rule
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def insert ( self , state , token ) : if token == EndSymbol ( ) : return self [ state ] [ EndSymbol ( ) ] from pydsl . check import check symbol_list = [ x for x in self [ state ] if isinstance ( x , TerminalSymbol ) and check ( x . gd , [ token ] ) ] if not symbol_list : return { "action" : "Fail" } if len ( symbol_li...
change internal state return action
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def append_item ( self , item ) : if not isinstance ( item , LR0Item ) : raise TypeError self . itemlist . append ( item )
Append new item to set
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def append_transition ( self , symbol , targetset ) : if symbol in self . transitions : return self . transitions [ symbol ] = targetset
Appends a transition
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def __parse ( self , tokenlist ) : tokenlist = [ x for x in tokenlist ] if not isinstance ( tokenlist , list ) : raise TypeError ( "Expected list, got %s" % tokenlist . __class__ . __name__ ) LOG . debug ( "get_trees: checking list: " + str ( tokenlist ) ) stack = [ ( 0 , Extended_S ) ] while True : state = stack [ - 1...
see parent docstring
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def graph_from_alphabet ( alphabet , base ) : if not isinstance ( alphabet , Choice ) : raise TypeError ( alphabet . __class__ . __name__ ) if not isinstance ( base , Choice ) : raise TypeError ( base . __class__ . __name__ ) import networkx result = networkx . DiGraph ( ) current_alphabet = alphabet pending_stack = se...
Creates a graph that connects the base with the target through alphabets If every target is connected to any inputs create the independent paths
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def is_subset ( a , b ) : return b . left <= a . left and b . right > a . right or b . left < a . left and b . right >= a . right
Excluding same size
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def digraph_walker_backwards ( graph , element , call_back ) : call_back ( graph , element ) for predecessor in graph . predecessors ( element ) : call_back ( graph , predecessor ) for predecessor in graph . predecessors ( element ) : digraph_walker_backwards ( graph , predecessor , call_back )
Visits every element guaranteeing that the previous elements have been visited before
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def first_lookup ( self , symbol , size = 1 ) : if isinstance ( symbol , ( TerminalSymbol , NullSymbol ) ) : return [ symbol . gd ] result = [ ] for production in self . productions : if production . leftside [ 0 ] != symbol : continue for right_symbol in production . rightside : if right_symbol == symbol : break curre...
Returns a Grammar Definition with the first n terminal symbols produced by the input symbol
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def next_lookup ( self , symbol ) : result = [ ] if symbol == self . initialsymbol : result . append ( EndSymbol ( ) ) for production in self . productions : if symbol in production . rightside : nextindex = production . rightside . index ( symbol ) + 1 while nextindex < len ( production . rightside ) : nextsymbol = pr...
Returns the next TerminalSymbols produced by the input symbol within this grammar definition
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def main_production ( self ) : for rule in self . productions : if rule . leftside [ 0 ] == self . _initialsymbol : return rule raise IndexError
Returns main rule
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def getSymbols ( self ) : symbollist = [ ] for rule in self . productions : for symbol in rule . leftside + rule . rightside : if symbol not in symbollist : symbollist . append ( symbol ) symbollist += self . terminal_symbols return symbollist
Returns every symbol
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def extract_alphabet ( alphabet , inputdata , fixed_start = False ) : if not inputdata : return [ ] base_alphabet = alphabet . alphabet lexer = lexer_factory ( alphabet , base_alphabet ) totallen = len ( inputdata ) maxl = totallen minl = 1 if fixed_start : max_start = 1 else : max_start = totallen result = [ ] for i i...
Receives a sequence and an alphabet returns a list of PositionTokens with all of the parts of the sequence that are a subset of the alphabet
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def extract ( grammar , inputdata , fixed_start = False , return_first = False ) : if not inputdata : return [ ] checker = checker_factory ( grammar ) totallen = len ( inputdata ) from pydsl . grammar . PEG import Choice try : maxl = grammar . maxsize or totallen except NotImplementedError : maxl = totallen try : minl ...
Receives a sequence and a grammar returns a list of PositionTokens with all of the parts of the sequence that are recognized by the grammar
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def append_position_to_token_list ( token_list ) : return [ PositionToken ( value . content , value . gd , index , index + 1 ) for ( index , value ) in enumerate ( token_list ) ]
Converts a list of Token into a list of Token asuming size == 1
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def load_python_file ( moduleobject ) : if isinstance ( moduleobject , str ) : moduleobject = load_module ( moduleobject ) if not hasattr ( moduleobject , "iclass" ) : raise KeyError ( "Element" + str ( moduleobject ) ) iclass = getattr ( moduleobject , "iclass" ) mylist = getattr ( moduleobject , "__all__" , None ) or...
Try to create an indexable instance from a module
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def load_bnf_file ( filepath , repository = None ) : linelist = [ ] with open ( filepath , 'r' ) as mlfile : for line in mlfile : linelist . append ( line ) return strlist_to_production_set ( linelist , repository )
Converts a bnf file into a BNFGrammar instance
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def load_re_from_file ( filepath ) : regexp = None with open ( filepath , 'r' ) as mlfile : flagstr = "" for line in mlfile : cleanline = re . sub ( "//.*$" , "" , line ) if re . search ( "^\s*$" , cleanline ) : continue if re . search ( "^#.*$" , cleanline ) : flagstr = cleanline [ 1 : ] continue if regexp is not None...
Converts a re file to Regular Grammar instance
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def url_for ( context , __route_name , ** parts ) : app = context [ 'app' ] query = None if 'query_' in parts : query = parts . pop ( 'query_' ) for key in parts : val = parts [ key ] if isinstance ( val , str ) : val = str ( val ) elif type ( val ) is int : val = str ( val ) else : raise TypeError ( "argument value sh...
Filter for generating urls .
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def static_url ( context , static_file_path ) : app = context [ 'app' ] try : static_url = app [ 'static_root_url' ] except KeyError : raise RuntimeError ( "app does not define a static root url " "'static_root_url', you need to set the url root " "with app['static_root_url'] = '<static root>'." ) from None return '{}/...
Filter for generating urls for static files .
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def init_gl ( self ) : "allocate OpenGL resources" self . vr_system = openvr . init ( openvr . VRApplication_Scene ) w , h = self . vr_system . getRecommendedRenderTargetSize ( ) self . left_fb = OpenVrFramebuffer ( w , h , multisample = self . multisample ) self . right_fb = OpenVrFramebuffer ( w , h , multisample = s...
allocate OpenGL resources
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def display ( self ) : "Renders the scene once every refresh" self . compositor . waitGetPoses ( self . poses , openvr . k_unMaxTrackedDeviceCount , None , 0 ) hmd_pose0 = self . poses [ openvr . k_unTrackedDeviceIndex_Hmd ] if not hmd_pose0 . bPoseIsValid : return if True : glClearColor ( 0.8 , 0.4 , 0.4 , 0 ) glClear...
Renders the scene once every refresh
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def key_press ( self , key , x , y ) : "Close the application when the player presses ESCAPE" if ord ( key ) == 27 : if bool ( glutLeaveMainLoop ) : glutLeaveMainLoop ( ) else : raise Exception ( "Application quit" )
Close the application when the player presses ESCAPE
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def key_callback ( self , window , key , scancode , action , mods ) : if key == glfw . KEY_ESCAPE and action == glfw . PRESS : glfw . SetWindowShouldClose ( self . window , True )
press ESCAPE to quite the application
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def run_loop ( self ) : "keep rendering until the user says quit" self . running = True event = SDL_Event ( ) try : while self . running : while SDL_PollEvent ( ctypes . byref ( event ) ) != 0 : f = self . _sdl_event_handlers . get ( event . type ) if f is not None : f ( event ) self . render_scene ( ) except SdlAppQui...
keep rendering until the user says quit
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def scale ( self , x , y = None , z = None ) : "Uniform scale, if only sx argument is specified" if y is None : y = x if z is None : z = x m = self for col in range ( 4 ) : m [ 0 , col ] *= x m [ 1 , col ] *= y m [ 2 , col ] *= z return self
Uniform scale if only sx argument is specified
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def _check_devices ( self ) : "Enumerate OpenVR tracked devices and check whether any need to be initialized" for i in range ( 1 , len ( self . poses ) ) : pose = self . poses [ i ] if not pose . bDeviceIsConnected : continue if not pose . bPoseIsValid : continue if self . show_controllers_only : device_class = openvr ...
Enumerate OpenVR tracked devices and check whether any need to be initialized
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def getGenericInterface ( interfaceVersion ) : error = EVRInitError ( ) result = _openvr . VR_GetGenericInterface ( interfaceVersion , byref ( error ) ) _checkInitError ( error . value ) return result
Returns the interface of the specified version . This method must be called after VR_Init . The pointer returned is valid until VR_Shutdown is called .
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def getRecommendedRenderTargetSize ( self ) : fn = self . function_table . getRecommendedRenderTargetSize pnWidth = c_uint32 ( ) pnHeight = c_uint32 ( ) fn ( byref ( pnWidth ) , byref ( pnHeight ) ) return pnWidth . value , pnHeight . value
Suggested size for the intermediate render target that the distortion pulls from .
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def getProjectionMatrix ( self , eEye , fNearZ , fFarZ ) : fn = self . function_table . getProjectionMatrix result = fn ( eEye , fNearZ , fFarZ ) return result
The projection matrix for the specified eye
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def getProjectionRaw ( self , eEye ) : fn = self . function_table . getProjectionRaw pfLeft = c_float ( ) pfRight = c_float ( ) pfTop = c_float ( ) pfBottom = c_float ( ) fn ( eEye , byref ( pfLeft ) , byref ( pfRight ) , byref ( pfTop ) , byref ( pfBottom ) ) return pfLeft . value , pfRight . value , pfTop . value , p...
The components necessary to build your own projection matrix in case your application is doing something fancy like infinite Z
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def computeDistortion ( self , eEye , fU , fV ) : fn = self . function_table . computeDistortion pDistortionCoordinates = DistortionCoordinates_t ( ) result = fn ( eEye , fU , fV , byref ( pDistortionCoordinates ) ) return result , pDistortionCoordinates
Gets the result of the distortion function for the specified eye and input UVs . UVs go from 0 0 in the upper left of that eye s viewport and 1 1 in the lower right of that eye s viewport . Returns true for success . Otherwise returns false and distortion coordinates are not suitable .
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def getTimeSinceLastVsync ( self ) : fn = self . function_table . getTimeSinceLastVsync pfSecondsSinceLastVsync = c_float ( ) pulFrameCounter = c_uint64 ( ) result = fn ( byref ( pfSecondsSinceLastVsync ) , byref ( pulFrameCounter ) ) return result , pfSecondsSinceLastVsync . value , pulFrameCounter . value
Returns the number of elapsed seconds since the last recorded vsync event . This will come from a vsync timer event in the timer if possible or from the application - reported time if that is not available . If no vsync times are available the function will return zero for vsync time and frame counter and return false ...
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def getTrackedDeviceActivityLevel ( self , unDeviceId ) : fn = self . function_table . getTrackedDeviceActivityLevel result = fn ( unDeviceId ) return result
Returns the level of activity on the device .
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def applyTransform ( self ) : fn = self . function_table . applyTransform pOutputPose = TrackedDevicePose_t ( ) pTrackedDevicePose = TrackedDevicePose_t ( ) pTransform = HmdMatrix34_t ( ) fn ( byref ( pOutputPose ) , byref ( pTrackedDevicePose ) , byref ( pTransform ) ) return pOutputPose , pTrackedDevicePose , pTransf...
Convenience utility to apply the specified transform to the specified pose . This properly transforms all pose components including velocity and angular velocity
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def getTrackedDeviceIndexForControllerRole ( self , unDeviceType ) : fn = self . function_table . getTrackedDeviceIndexForControllerRole result = fn ( unDeviceType ) return result
Returns the device index associated with a specific role for example the left hand or the right hand . This function is deprecated in favor of the new IVRInput system .
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def getControllerRoleForTrackedDeviceIndex ( self , unDeviceIndex ) : fn = self . function_table . getControllerRoleForTrackedDeviceIndex result = fn ( unDeviceIndex ) return result
Returns the controller type associated with a device index . This function is deprecated in favor of the new IVRInput system .
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def isTrackedDeviceConnected ( self , unDeviceIndex ) : fn = self . function_table . isTrackedDeviceConnected result = fn ( unDeviceIndex ) return result
Returns true if there is a device connected in this slot .
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def getBoolTrackedDeviceProperty ( self , unDeviceIndex , prop ) : fn = self . function_table . getBoolTrackedDeviceProperty pError = ETrackedPropertyError ( ) result = fn ( unDeviceIndex , prop , byref ( pError ) ) return result , pError
Returns a bool property . If the device index is not valid or the property is not a bool type this function will return false .
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def getArrayTrackedDeviceProperty ( self , unDeviceIndex , prop , propType , pBuffer , unBufferSize ) : fn = self . function_table . getArrayTrackedDeviceProperty pError = ETrackedPropertyError ( ) result = fn ( unDeviceIndex , prop , propType , pBuffer , unBufferSize , byref ( pError ) ) return result , pError
Returns an array of one type of property . If the device index is not valid or the property is not a single value or an array of the specified type this function will return 0 . Otherwise it returns the number of bytes necessary to hold the array of properties . If unBufferSize is greater than the returned size and pBu...
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def getStringTrackedDeviceProperty ( self , unDeviceIndex , prop ) : fn = self . function_table . getStringTrackedDeviceProperty pError = ETrackedPropertyError ( ) unRequiredBufferLen = fn ( unDeviceIndex , prop , None , 0 , byref ( pError ) ) if unRequiredBufferLen == 0 : return b"" pchBuffer = ctypes . create_string_...
Returns a string property . If the device index is not valid or the property is not a string type this function will return 0 . Otherwise it returns the length of the number of bytes necessary to hold this string including the trailing null . Strings will always fit in buffers of k_unMaxPropertyStringSize characters .
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def getPropErrorNameFromEnum ( self , error ) : fn = self . function_table . getPropErrorNameFromEnum result = fn ( error ) return result
returns a string that corresponds with the specified property error . The string will be the name of the error enum value for all valid error codes
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def pollNextEvent ( self , pEvent ) : fn = self . function_table . pollNextEvent result = fn ( byref ( pEvent ) , sizeof ( VREvent_t ) ) return result != 0
Returns true and fills the event with the next event on the queue if there is one . If there are no events this method returns false . uncbVREvent should be the size in bytes of the VREvent_t struct
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def pollNextEventWithPose ( self , eOrigin , uncbVREvent ) : fn = self . function_table . pollNextEventWithPose pEvent = VREvent_t ( ) pTrackedDevicePose = TrackedDevicePose_t ( ) result = fn ( eOrigin , byref ( pEvent ) , uncbVREvent , byref ( pTrackedDevicePose ) ) return result , pEvent , pTrackedDevicePose
Returns true and fills the event with the next event on the queue if there is one . If there are no events this method returns false . Fills in the pose of the associated tracked device in the provided pose struct . This pose will always be older than the call to this function and should not be used to render the devic...
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def getEventTypeNameFromEnum ( self , eType ) : fn = self . function_table . getEventTypeNameFromEnum result = fn ( eType ) return result
returns the name of an EVREvent enum value
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def getControllerState ( self , unControllerDeviceIndex , unControllerStateSize = sizeof ( VRControllerState_t ) ) : fn = self . function_table . getControllerState pControllerState = VRControllerState_t ( ) result = fn ( unControllerDeviceIndex , byref ( pControllerState ) , unControllerStateSize ) return result , pCo...
Fills the supplied struct with the current state of the controller . Returns false if the controller index is invalid . This function is deprecated in favor of the new IVRInput system .
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def getControllerStateWithPose ( self , eOrigin , unControllerDeviceIndex , unControllerStateSize = sizeof ( VRControllerState_t ) ) : fn = self . function_table . getControllerStateWithPose pControllerState = VRControllerState_t ( ) pTrackedDevicePose = TrackedDevicePose_t ( ) result = fn ( eOrigin , unControllerDevic...
fills the supplied struct with the current state of the controller and the provided pose with the pose of the controller when the controller state was updated most recently . Use this form if you need a precise controller pose as input to your application when the user presses or releases a button . This function is de...
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def triggerHapticPulse ( self , unControllerDeviceIndex , unAxisId , usDurationMicroSec ) : fn = self . function_table . triggerHapticPulse fn ( unControllerDeviceIndex , unAxisId , usDurationMicroSec )
Trigger a single haptic pulse on a controller . After this call the application may not trigger another haptic pulse on this controller and axis combination for 5ms . This function is deprecated in favor of the new IVRInput system .
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def getButtonIdNameFromEnum ( self , eButtonId ) : fn = self . function_table . getButtonIdNameFromEnum result = fn ( eButtonId ) return result
returns the name of an EVRButtonId enum value . This function is deprecated in favor of the new IVRInput system .
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def getControllerAxisTypeNameFromEnum ( self , eAxisType ) : fn = self . function_table . getControllerAxisTypeNameFromEnum result = fn ( eAxisType ) return result
returns the name of an EVRControllerAxisType enum value . This function is deprecated in favor of the new IVRInput system .
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def driverDebugRequest ( self , unDeviceIndex , pchRequest , pchResponseBuffer , unResponseBufferSize ) : fn = self . function_table . driverDebugRequest result = fn ( unDeviceIndex , pchRequest , pchResponseBuffer , unResponseBufferSize ) return result
Sends a request to the driver for the specified device and returns the response . The maximum response size is 32k but this method can be called with a smaller buffer . If the response exceeds the size of the buffer it is truncated . The size of the response including its terminating null is returned .
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def getWindowBounds ( self ) : fn = self . function_table . getWindowBounds pnX = c_int32 ( ) pnY = c_int32 ( ) pnWidth = c_uint32 ( ) pnHeight = c_uint32 ( ) fn ( byref ( pnX ) , byref ( pnY ) , byref ( pnWidth ) , byref ( pnHeight ) ) return pnX . value , pnY . value , pnWidth . value , pnHeight . value
Size and position that the window needs to be on the VR display .