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aifc.cpython-310.opt-2.pyc
o &J @ sr d dl Z d dlZd dlZddgZG dd deZdZdd Zdd Zd d Z d d Z dd Z dZ dd Z dd Zdd Zdd Zdd Zdd Zd d Zd d lmZ d d lmZ ed!d"Zd#ej_d$ej_d%ej _d&ej _d'ej _d(ej _G d)d* d*Z G d+d, d,Z!d>d-dZ"e#d.kr7d dl$Z$e$j%d/d se$j%&d0 e$j%d/ Z'e"e'd1Z(e)d2e' e)d3e(* e)d4e(+ e)d5e(, e)d6e(- e)d7e(. e)d8e(/ e$j%d9d r$e$j%d9 Z0e)d:e0 e"e0d; Z1e12e(3 e(4d<Z5e5sne16e5 qW d n 1 sw Y e)d= W d dS W d dS 1 s0w Y dS dS )? NErroropenc @ s e Zd ZdS )r N)__name__ __module__ __qualname__ r r */opt/plesk/python/3/lib/python3.10/aifc.pyr s l @Q E c C 0 z t d| dd W S t jy td w )N>l r structunpackreaderrorEOFErrorfiler r r _read_long r c C r )N>Lr r r r r r r _read_ulong r r c C r )N>h r r r r r r _read_short r r c C r )N>Hr r r r r r r _read_ushort r r c C s@ t | d}|dkrd}n| |}|d@ dkr | d}|S )N r )ordr )r lengthdatadummyr r r _read_string s r# gc C s t | }d}|dk rd}|d }t| }t| }|| kr'| kr'dkr/n nd} || S |dkr9t} || S |d }|d | td |d } || S ) Nr r g i? l g @? )r r _HUGE_VALpow)fexponsignhimantlomantr r r _read_float s "r/ c C | td| d S )Nr writer packr* xr r r _write_short r6 c C r0 )Nr r1 r4 r r r _write_ushort r7 r8 c C r0 )Nr r1 r4 r r r _write_long r7 r9 c C r0 )Nr r1 r4 r r r _write_ulong r7 r: c C sV t |dkr td| tdt | | | t |d@ dkr)| d d S d S )N z%string exceeds maximum pstring lengthBr r )len ValueErrorr2 r r3 )r* sr r r _write_string s rA c C s dd l }|dk rd}|d }nd}|dkr d}d}d}nP||\}}|dks/|dks/||kr8|dB }d}d}n4|d }|dk rH|||}d}||B }||d}||}t|}||| d}||}t|}t| | t| | t| | d S ) Nr r% r$ i @ r r& i? )mathfrexpldexpfloorintr8 r: ) r* r5 rC r, r+ r- r. ZfmantZfsmantr r r _write_float s8 rH )Chunk) namedtuple _aifc_paramsz7nchannels sampwidth framerate nframes comptype compnamez3Number of audio channels (1 for mono, 2 for stereo)zSample width in byteszSampling frequencyzNumber of audio framesz(Compression type ("NONE" for AIFF files)zRA human-readable version of the compression type ('not compressed' for AIFF files)c @ s e Zd ZdZdd Zdd Zdd Zdd Zd d Zd d Z dd Z dd Z dd Z dd Z dd Zdd Zdd Zd d Zd d Zd d! Zd"d# Zd$d% Zd&d' Zd(d) Zd*d+ Zd,d- Zd.d/ Zd0d1 ZdS )2 Aifc_readNc C s, d| _ d | _g | _d| _|| _t|}| dkr td|d}|dkr*d| _ n |dkr2d| _ ntdd| _ d | _ d| _ zt| j}W n t yP Y n:w | }|d krb| | d| _ n#|d krr|| _ |d }d| _ n|d kr|t|| _ n |d kr| | | q=| j r| j stdd S )Nr FORMz file does not start with FORM idr AIFF AIFCr znot an AIFF or AIFF-C file COMM SSND FVER MARKz$COMM chunk and/or SSND chunk missing)_version_convert_markers _soundpos_filerI Zgetnamer r _aifcZ_comm_chunk_read _ssnd_chunk_ssnd_seek_neededr _read_comm_chunkr _readmarkskip)selfr chunkZformdataZ chunknamer" r r r initfp4 sP zAifc_read.initfpc C sF t |tr t|d}z| | W d S | | | d S )Nrb) isinstancestrbuiltinsr rb closer` r* Z file_objectr r r __init__\ s zAifc_read.__init__c C | S Nr r` r r r __enter__h zAifc_read.__enter__c G | d S rk rg r` argsr r r __exit__k zAifc_read.__exit__c C | j S rk )rY rl r r r getfpq zAifc_read.getfpc C s d| _ d| _d S )Nr r )r\ rX rl r r r rewindt s zAifc_read.rewindc C s$ | j }|d urd | _ | d S d S rk )rY rg r` r r r r rg x s zAifc_read.closec C ru rk )rX rl r r r tell~ rw zAifc_read.tellc C ru rk ) _nchannelsrl r r r getnchannels rw zAifc_read.getnchannelsc C ru rk )_nframesrl r r r getnframes rw zAifc_read.getnframesc C ru rk ) _sampwidthrl r r r getsampwidth rw zAifc_read.getsampwidthc C ru rk ) _frameraterl r r r getframerate rw zAifc_read.getframeratec C ru rk _comptyperl r r r getcomptype rw zAifc_read.getcomptypec C ru rk _compnamerl r r r getcompname rw zAifc_read.getcompnamec C s* t | | | | | | S rk )rK r| r r r~ r r rl r r r getparams s zAifc_read.getparamsc C t | jdkr d S | jS Nr r> rW rl r r r getmarkers zAifc_read.getmarkersc C . | j D ] }||d kr| S qtd|Nr zmarker {0!r} does not existrW r formatr` idmarkerr r r getmark zAifc_read.getmarkc C s* |dk s || j kr td|| _d| _d S )Nr zposition not in ranger )r} r rX r\ )r` posr r r setpos s zAifc_read.setposc C s | j r"| jd | jd}| j| j }|r | j|d d| _ |dkr(dS | j|| j }| jr;|r;| |}| jt|| j| j | _|S )Nr rR r ) r\ r[ seekr rX _framesizerV r> r{ r )r` nframesr" r r! r r r readframes s zAifc_read.readframesc C dd l }||dS Nr r )audioopZalaw2linr` r! r r r r _alaw2lin zAifc_read._alaw2linc C r r )r Zulaw2linr r r r _ulaw2lin r zAifc_read._ulaw2linc C 2 dd l }t| ds d | _||d| j\}| _|S Nr _adpcmstater )r hasattrr Z adpcm2linr r r r _adpcm2lin s zAifc_read._adpcm2linc C sR t || _t|| _t |d d | _tt|| _| jdkr#td| jdkr,td| j| j | _ | j rd}|j dkrGd}t d d |_ |d | _|rnt|jd}|d@ dkra|d }|j | |_ |jd d t|| _| jd kr| jd kr| j| _n| jdv r| j| _n| jdv r| j| _ntdd| _d S d S d | _d| _d S )N rR r bad sample widthbad # of channels r z Warning: bad COMM chunk size r r$ NONE G722 ulaw ULAW alaw ALAW unsupported compression typer not compressed)r r{ r r} r rG r/ r r r rZ chunksizewarningswarnr r r r r r# r r rV r r )r` ra Zkludger r r r r] sF zAifc_read._read_comm_chunkc C s t |}z#t|D ]}t |}t|}t|}|s|r$| j|||f q W d S tyI dt| jt| jdkr<dnd|f }t | Y d S w )Nz;Warning: MARK chunk contains only %s marker%s instead of %sr r@ ) r ranger r# rW appendr r> r r )r` ra Znmarkersir r namewr r r r^ s$ zAifc_read._readmark) r r r rY rb ri rm rs rv rx rg rz r| r~ r r r r r r r r r r r r r] r^ r r r r rL s4 $( *rL c @ s0 e Zd ZdZdd Zdd Zdd Zdd Zd d Zd d Z dd Z dd Z dd Z dd Z dd Zdd Zdd Zd d Zd d Zd d! Zd"d# Zd$d% Zd&d' Zd(d) Zd*d+ Zd,d- Zd.d/ Zd0d1 Zd2d3 Z d4d5 Z d6d7 Z d8d9 Z d:d; Z d<d= Z!d>d? Z"d@dA Z#dBdC Z$dDdE Z%dFdG Z&dHdI Z'dS )J Aifc_writeNc C s\ t |tr't|d}z| | W n | |dr%d| _d S d S | | d S )Nwbz.aiffr )rd re rf r rb rg endswithrZ rh r r r ri / s zAifc_write.__init__c C s^ || _ t| _d| _d| _d | _d| _d| _d| _d| _ d| _ d| _ d| _ g | _ d| _d| _d S )Nr r r r )rY _AIFC_versionrU r r rV r{ r r r} _nframeswritten _datawritten _datalengthrW _marklengthrZ ry r r r rb ? s zAifc_write.initfpc C ro rk rp rl r r r __del__P rt zAifc_write.__del__c C rj rk r rl r r r rm S rn zAifc_write.__enter__c G ro rk rp rq r r r rs V rt zAifc_write.__exit__c C | j rtdd| _d S )N0cannot change parameters after starting to writer r r rZ rl r r r aiff\ zAifc_write.aiffc C r )Nr r r rl r r r aifca r zAifc_write.aifcc C s( | j rtd|dk rtd|| _d S )Nr r r )r r r{ )r` nchannelsr r r setnchannelsf zAifc_write.setnchannelsc C | j std| j S )Nznumber of channels not set)r{ r rl r r r r| m zAifc_write.getnchannelsc C s0 | j rtd|dk s|dkrtd|| _d S )Nr r r r )r r r )r` sampwidthr r r setsampwidthr s zAifc_write.setsampwidthc C r )Nzsample width not set)r r rl r r r r y r zAifc_write.getsampwidthc C s( | j rtd|dkrtd|| _d S )Nr r zbad frame rate)r r r )r` framerater r r setframerate~ r zAifc_write.setframeratec C r )Nzframe rate not set)r r rl r r r r r zAifc_write.getframeratec C s | j rtd|| _d S )Nr )r r r} )r` r r r r setnframes r zAifc_write.setnframesc C ru rk r rl r r r r~ rw zAifc_write.getnframesc C s. | j rtd|dvrtd|| _|| _d S Nr )r r r r r r r )r r r r )r` comptypecompnamer r r setcomptype s zAifc_write.setcomptypec C ru rk r rl r r r r rw zAifc_write.getcomptypec C ru rk r rl r r r r rw zAifc_write.getcompnamec C sf |\}}}}}}| j rtd|dvrtd| | | | | | | | | || d S r )r r r r r r r )r` paramsr r r r r r r r r setparams s zAifc_write.setparamsc C s8 | j r | jr | js tdt| j | j| j| j| j| jS )Nznot all parameters set)r{ r r r rK r} r r rl r r r r s zAifc_write.getparamsc C s |dkrt d|dk rt dt|tst dtt| jD ]}|| j| d kr6|||f| j|< d S q | j|||f d S )Nr zmarker ID must be > 0z marker position must be >= 0zmarker name must be bytes)r rd bytesr r> rW r )r` r r r r r r r setmark s zAifc_write.setmarkc C r r r r r r r r r zAifc_write.getmarkc C r r r rl r r r r r zAifc_write.getmarkersc C ru rk r rl r r r rz rw zAifc_write.tellc C sz t |ttfst|d}| t| t|| j| j }| j r'| |}| j | | j | | _ | j t| | _ d S )Nr< )rd r bytearray memoryviewcast_ensure_header_writtenr> r r{ rV rY r2 r r )r` r! r r r r writeframesraw s zAifc_write.writeframesrawc C s2 | | | j| jks| j| jkr| d S d S rk )r r r} r r _patchheader)r` r! r r r writeframes s zAifc_write.writeframesc C s | j d u rd S zM| d | jd@ r | j d | jd | _| | j| jks1| j| jks1| jrE| W d | _ | j }d | _ | d S W d | _ | j }d | _ | d S d | _ | j }d | _ | w )Nr r r= ) rY r r r2 _writemarkersr r} r r r rV rg )r` r* r r r rg s4 zAifc_write.closec C r r )r Zlin2alawr r r r _lin2alaw r zAifc_write._lin2alawc C r r )r Zlin2ulawr r r r _lin2ulaw r zAifc_write._lin2ulawc C r r )r r r Z lin2adpcmr r r r _lin2adpcm s zAifc_write._lin2adpcmc C sj | j s3| jdv r| jsd| _| jdkrtd| js td| js%td| js,td| | d S d S )Nr r r r r r zRsample width must be 2 when compressing with ulaw/ULAW, alaw/ALAW or G7.22 (ADPCM)z# channels not specifiedzsample width not specifiedzsampling rate not specified)r r r r r{ r _write_header)r` Zdatasizer r r r s z!Aifc_write._ensure_header_writtenc C sF | j dkr | j| _d S | j dv r| j| _d S | j dv r!| j| _d S d S )Nr r r )r r rV r r rl r r r _init_compression s z Aifc_write._init_compressionc C s@ | j r | jdkr | | jd | js || j| j | _| j| j | j | _| jd@ r3| jd | _| j re| jdv rM| jd | _| jd@ rL| jd | _n| jdkre| jd d | _| jd@ re| jd | _z| j | _ W n t t fy{ d | _ Y nw | | j}| j r| jd | jd t| jd t| j| j n| jd | jd t| j| t| j| j | j d ur| j | _t| j| j | jd v rt| jd n t| j| jd t| j| j | j r| j| j t| j| j | jd | j d ur | j | _t| j| jd t| jd t| jd d S )Nr rM r )r r r r r r r rO rS rN rP r rR rQ r )rZ r r rY r2 r} r{ r r rz _form_length_posAttributeErrorOSError_write_form_lengthr: rU r6 _nframes_posrH r rA r _ssnd_length_pos)r` Z initlength commlengthr r r r % sb zAifc_write._write_headerc C s\ | j rdt| j }|d@ r|d }d}nd}d}t| jd| | j d | d | |S ) Nr r r r r rR )rZ r> r r: rY r )r` datalengthr Z verslengthr r r r X s" z Aifc_write._write_form_lengthc C s | j }| jd@ r| jd }| j d n| j}|| jkr2| j| jkr2| jdkr2| j |d d S | j | j d | |}| j | j d t | j | j | j | j d t | j |d | j |d | j| _|| _d S )Nr r= r rR )rY rz r r2 r r} r r r r r r r: r )r` Zcurposr r" r r r r e s& zAifc_write._patchheaderc C s t | jdkr d S | jd d}| jD ] }|\}}}|t | d d }t |d@ dkr1|d }qt| j| |d | _t| jt | j | jD ]}|\}}}t| j| t| j| t| j| qId S )Nr rT r r rR )r> rW rY r2 r: r r6 rA )r` r r r r r r r r r { s& zAifc_write._writemarkers)(r r r rY ri rb r rm rs r r r r| r r r r r r~ r r r r r r r r rz r r rg r r r r r r r r r r r r r r sL 3 r c C sF |d u rt | dr | j}nd}|dv rt| S |dv r t| S td)Nmoderc )rrc )r r z$mode must be 'r', 'rb', 'w', or 'wb')r r rL r r )r* r r r r r s __main__r z /usr/demos/data/audio/bach.aiffr ZReadingz nchannels =z nframes =z sampwidth =z framerate =z comptype =z compname =r ZWritingr i zDone.rk )7r rf r __all__ Exceptionr r r r r r r# r( r/ r6 r8 r9 r: rA rH ra rI collectionsrJ rK r __doc__r r r r r rL r r r sysargvr fnr* printr| r~ r r r r Zgngr r r r! r r r r r <module> s ! $