o ٷi*@sdZddlZddlZddlZddlZddlZddlmZddlm Z ddZ e dZ e d Z ej e j_ejejge j_ejge j_eje j_ejej ejejge j_eje j_ejge j_eje j_ejejge j_eje j_ejejejejge j_eje j_ejejejejge j_eje j_ejejejge j_eje j_ejge j_d d Zed Zed ZedZ edZ!dZ"dZ#dZ$dZ%edZ&edZ'dZ(GdddeZ)ddZ*GdddZ+Gddde+Z,Gdddej-Z.Gd d!d!ej-Z/Gd"d#d#ej-Z0Gd$d%d%e Z1dS)&z-Read audio files using CoreAudio on Mac OS X.N) DecodeError) AudioFilecCstjtj|SN)ctypescdll LoadLibraryutil find_library)namer C/home/ubuntu/.local/lib/python3.10/site-packages/audioread/macca.py_load_frameworksr AudioToolboxCoreFoundationcCs>d}t|D]\}}t||dd}|t||>O}q|S)zEmulates character integer literals in C. Given a string "abc", returns the value of the C single-quoted literal 'abc'. rr) enumeratelenord)charsnumindexcharshiftr r r multi_char_literalPs rffmtcfmtz#frmlpcmrztyp?zfmt?icseZdZfddZZS)MacErrorcs4|tkrd}n |tkrd}nd|}t|dS)Nzunsupported audio typezunsupported formatzerror %i) ERROR_TYPE ERROR_FORMATsuper__init__)selfcodemsg __class__r r r$ks zMacError.__init__)__name__ __module__ __qualname__r$ __classcell__r r r(r r jsr cCs$|tkrtd|dkrt|dS)z.If err is nonzero, raise a MacError exception.zfile not foundrN)ERROR_NOT_FOUNDOSErrorr )errr r r checkus r1c@seZdZddZddZdS)CFObjectcCs|dkrtd||_dS)Nrzobject is zero) ValueError_obj)r%objr r r r$s zCFObject.__init__cCstr t|jdSdSr)_corefoundation CFReleaser4r%r r r __del__szCFObject.__del__N)r*r+r,r$r9r r r r r2s r2cs$eZdZfddZddZZS)CFURLcsPtjtj|}t|ts|t}t d|t |d}t |dS)NrF)ospathabspath expanduser isinstancebytesencodesysgetfilesystemencodingr6'CFURLCreateFromFileSystemRepresentationrr#r$r%filenameurlr(r r r$s  zCFURL.__init__cCst|j}t|d}|S)Nr)r6CFURLGetStringr4CFStringGetCStringPtr)r%cfstroutr r r __str__s  z CFURL.__str__)r*r+r,r$rLr-r r r(r r:s  r:c @sXeZdZdejfdejfdejfdejfdejfdejfdejfdejfd ejfg Zd S) AudioStreamBasicDescription mSampleRate mFormatID mFormatFlagsmBytesPerPacketmFramesPerPacketmBytesPerFramemChannelsPerFramemBitsPerChannel mReservedN)r*r+r,rc_doublec_uint_fields_r r r r rMsrMc@s(eZdZdejfdejfdejfgZdS) AudioBuffermNumberChannels mDataByteSizemDataN)r*r+r,rrXc_void_prYr r r r rZs rZc@s"eZdZdejfdedfgZdS)AudioBufferListmNumberBuffersmBuffersrN)r*r+r,rrXrZrYr r r r r_s r_c@seZdZdZddZeddZddZdd Ze d d Z e d d Z e ddZ e ddZ d#ddZd$ddZddZddZddZddZd d!Zd"S)% ExtAudioFileajA CoreAudio "extended audio file". Reads information and raw PCM audio data from any file that CoreAudio knows how to decode. >>> with ExtAudioFile('something.m4a') as f: >>> print f.samplerate >>> print f.channels >>> print f.duration >>> for block in f: >>> do_something(block) cCsHt|}z|||_Wnd|_~d|_d|_d|_|dS)NTF)r: _open_urlr4closed _file_fmt _client_fmtsetuprEr r r r$s zExtAudioFile.__init__cCs$t}tt|jt||S)zGGiven a CFURL Python object, return an opened ExtAudioFileRef. )rr^r1 _coreaudioExtAudioFileOpenURLr4byref)clsrGfile_objr r r rcs  zExtAudioFile._open_urlc Cs:|jtksJtt|jtt|t |||_ dS)zGet the client format description. This describes the encoding of the data that the program will read from this object. N) rO AUDIO_ID_PCMr1rhExtAudioFileSetPropertyr4PROP_CLIENT_DATA_FORMATrsizeofrjrf)r%descr r r set_client_formats  zExtAudioFile.set_client_formatc CsR|jdur|jSt}tt|}tt|jt t |t |||_|S)zaGet the file format description. This describes the type of data stored on disk. N) rerMrc_intrpr1rhExtAudioFileGetPropertyr4PROP_FILE_DATA_FORMATrj)r%rqsizer r r get_file_formats zExtAudioFile.get_file_formatcCt|jS)z+The number of channels in the audio source.)intrwrTr8r r r channelszExtAudioFile.channelscCrx)z"Gets the sample rate of the audio.)ryrwrNr8r r r samplerater{zExtAudioFile.sampleratecCst|j|jS)z1Gets the length of the file in seconds (a float).)floatnframesr|r8r r r duration szExtAudioFile.durationc Cs@t}tt|}tt|jtt |t ||j S)z-Gets the number of frames in the source file.) rc_longrsrpr1rhrtr4 PROP_LENGTHrjvalue)r%lengthrvr r r r~s zExtAudioFile.nframescCsV|}t|}t|_ttB|_||_|j|jd|_ d|_ |j |_ | |dS)zSet the client format parameters, specifying the desired PCM audio data format to be read from the file. Must be called before reading from the file. rrN) rwcopyrmrOPCM_IS_SIGNED_INT PCM_IS_PACKEDrPrUrTrQrRrSrr)r%bitdepthfmtnewfmtr r r rgs zExtAudioFile.setupccst||jj}t|}t}d|_|jj|jd_ ||jd_ t |tj |jd_ tt|jt|t||jdksFJ|jdj }|sPdSt |jdj ttj}|d|}|Vq/)zFGenerates byte strings reflecting the audio data in the file. rrTN)rrXrfrScreate_string_bufferr_r`rTrar[r\castr^r]r1rhExtAudioFileReadr4rjPOINTERc_char)r% blocksizeframesbufbuflistrvdatablobr r r read_data,s.     zExtAudioFile.read_datacCs$|jstt|jd|_dSdS)z0Close the audio file and free associated memory.TN)rdr1rhExtAudioFileDisposer4r8r r r closeHs zExtAudioFile.closecCstr|dSdSr)rhrr8r r r r9Ns zExtAudioFile.__del__cCs|Srr r8r r r __enter__SszExtAudioFile.__enter__cCs |dS)NF)r)r%exc_typeexc_valexc_tbr r r __exit__VszExtAudioFile.__exit__cCs|Sr)rr8r r r __iter__[szExtAudioFile.__iter__N)r)r)r*r+r,__doc__r$ classmethodrcrrrwpropertyrzr|rr~rgrrr9rrrr r r r rbs,          rb)2rrr ctypes.utilr;rB exceptionsrbaserrrhr6c_char_prIrestyper^rsargtypesr7rDc_boolrHrirnrXrtrrrrurorrm PCM_IS_FLOATPCM_IS_BIG_ENDIANrrr!r"r.r r1r2r: StructurerMrZr_rbr r r r sn