]| @ s d d l Z d d l Z d d l Z d d d g Z Gd d d e Z d Z d d Z d d
Z d d Z d
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d d Z d Z d d Z
d d Z d d Z d d Z d d Z d d Z d d Z d d l m Z d d! l m Z e d" d# Z Gd$ d% d% Z Gd& d' d' Z d d( d Z e Z e d) k rd d l Z e j d* d re j j d+ e j d* Z! e e! d, Z" e# d- e! e# d. e" j$ e# d/ e" j% e# d0 e" j& e# d1 e" j' e# d2 e" j( e# d3 e" j) e j d4 d re j d4 Z* e# d5 e* e e* d6 E Z+ e+ j, e" j- x( e" j. d7 Z/ e/ rPe+ j0 e/ q~WWd QRXe# d8 Wd QRXd S)9 NErroropenopenfpc @ s e Z d Z d S)r N)__name__
__module__ __qualname__ r r )/opt/alt/python35/lib64/python3.5/aifc.pyr s l @Q E c C sC y! t j d | j d d SWn t j k
r> t Yn Xd S)Nz>l r )structunpackreaderrorEOFError)filer r r
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} | d } t | } t | } | | k oh | k oh d k n rv d } n> | d k r t } n) | d } | d | t d | d } | | S) Nr r i g i i? l g @? )r r _HUGE_VALpow)fexponsignhimantlomantr r r _read_float s
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r& c C s | j t j d | d S)Nz>h)writer pack)r! xr r r _write_short s r* c C s | j t j d | d S)Nz>H)r' r r( )r! r) r r r
_write_ushort s r+ c C s | j t j d | d S)Nz>l)r' r r( )r! r) r r r _write_long s r, c C s | j t j d | d S)Nz>L)r' r r( )r! r) r r r _write_ulong s r- c C sq t | d k r t d | j t j d t | | j | t | d @d k rm | j d d S)N z%string exceeds maximum pstring lengthBr r s )len
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r3 c C se d d l } | d k r+ d } | d } n d } | d k rR d } d } d } n | j | \ } } | d k s | d k s | | k r | d B} d } d } n | d } | d k r | j | | } d } | | B} | j | d } | j | } t | } | j | | d } | j | } t | } t | | t | | t | | d S) Nr i r i @ i i? r )mathfrexpldexpfloorintr+ r- ) r! r) r5 r# r" r$ r% ZfmantZfsmantr r r _write_float s8
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namedtuple _aifc_paramsz7nchannels sampwidth framerate nframes comptype compnamec @ s6 e Z d Z d Z d d Z d d Z d d Z d d Z d
d Z d d
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d d Z d d Z d d Z
d d Z d d Z d d Z d d Z d d Z d d! Z d" d# Z d$ d% Z d& d' Z d( d) Z d* d+ Z d, d- Z d. d/ Z d0 d1 Z d S)2 Aifc_readNc C s d | _ d | _ g | _ d | _ | | _ t | } | j d k rW t d | j d } | d k r~ d | _ n$ | d k r d | _ n t d d | _
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zAifc_read.initfpc C s^ t | t rM t j | d } y | j | WqZ | j YqZ Xn
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isinstancestrbuiltinsr rM close)rK r! file_objectr r r __init__R s
zAifc_read.__init__c C s | S)Nr )rK r r r __enter__^ s zAifc_read.__enter__c G s | j d S)N)rR )rK argsr r r __exit__a s zAifc_read.__exit__c C s | j S)N)rD )rK r r r getfpg s zAifc_read.getfpc C s d | _ d | _ d S)Nr r )rF rC )rK r r r rewindj s zAifc_read.rewindc C s, | j } | d k r( d | _ | j d S)N)rD rR )rK r r r r rR n s zAifc_read.closec C s | j S)N)rC )rK r r r tellt s zAifc_read.tellc C s | j S)N)
_nchannels)rK r r r getnchannelsw s zAifc_read.getnchannelsc C s | j S)N)_nframes)rK r r r
getnframesz s zAifc_read.getnframesc C s | j S)N)
_sampwidth)rK r r r getsampwidth} s zAifc_read.getsampwidthc C s | j S)N)
_framerate)rK r r r getframerate s zAifc_read.getframeratec C s | j S)N) _comptype)rK r r r getcomptype s zAifc_read.getcomptypec C s | j S)N) _compname)rK r r r getcompname s zAifc_read.getcompnamec C s= t | j | j | j | j | j | j S)N)r= r\ r` rb r^ rd rf )rK r r r getparams s zAifc_read.getparamsc C s t | j d k r d S| j S)Nr )r0 rB )rK r r r
getmarkers s zAifc_read.getmarkersc C sA x% | j D] } | | d k r
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Wt d j | d S)Nr zmarker {0!r} does not exist)rB r format)rK idmarkerr r r getmark s zAifc_read.getmarkc C s= | d k s | | j k r' t d | | _ d | _ d S)Nr zposition not in ranger )r] r rC rF )rK posr r r setpos s zAifc_read.setposc C s | j r^ | j j d | j j d } | j | j } | rU | j j | d d | _ | d k rn d S| j j | | j } | j r | r | j | } | j t | | j | j | _ | S)Nr r? r )
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_framesizerA r0 r[ r_ )rK nframesr rm r r r r
readframes s zAifc_read.readframesc C s d d l } | j | d S)Nr r )audioopZalaw2lin)rK r rs r r r _alaw2lin s zAifc_read._alaw2linc C s d d l } | j | d S)Nr r )rs Zulaw2lin)rK r rs r r r _ulaw2lin s zAifc_read._ulaw2linc C sI d d l } t | d s$ d | _ | j | d | j \ } | _ | S)Nr _adpcmstater )rs hasattrrv Z adpcm2lin)rK r rs r r r
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!zAifc_read._adpcm2linc C s t | | _ t | | _ t | d d | _ t t | | _ | j | j | _ | j rd } | j
d k r d } t j d d | _
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d } | d @d k r | d } | j
| | _
| j j d d t | | _ | j d k r| j d
k r@| j | _ nH | j d k r^| j | _ n* | j d k r|| j | _ n t d d | _ n d | _ d | _ d S)N r? r r z Warning: bad COMM chunk size r
s NONEs G722 ulaw ULAW alaw ALAWz unsupported compression typer s not compressedr )r| r} )r~ r )r r[ r r] r_ r9 r& ra rp rE chunksizewarningswarnr
rc r r ro r re rx rA ru rt r )rK rL Zkludger r r r rG s<
zAifc_read._read_comm_chunkc C s t | } yd x] t | D]O } t | } t | } t | } | sR | r | j j | | | f q WWnV t k
r d t | j t | j d k r d n d | f } t j | Yn Xd S)Nz;Warning: MARK chunk contains only %s marker%s instead of %sr r2 )
r ranger r rB appendr r0 r r )rK rL Znmarkersirj rm namewr r r rI s !
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zAifc_read._readmark) r r r rD rM rT rU rW rX rY rR rZ r\ r^ r` rb rd rf rg rh rl rn rr rt ru rx rG rI r r r r r> s2 $ ' &r> c @ s e Z d Z d Z d d Z d d Z d d Z d d Z d
d Z d d
Z d d Z
d d Z d d Z d d Z
d d Z d d Z d d Z d d Z d d Z d d! Z d" d# Z d$ d% Z d& d' Z d( d) Z d* d+ Z d, d- Z d. d/ Z d0 d1 Z d2 d3 Z d4 d5 Z d6 d7 Z d8 d9 Z d: d; Z d< d= Z! d> d? Z" d@ dA Z# dB dC Z$ dD dE Z% dF dG Z& dH dI Z' d S)J
Aifc_writeNc C sv t | t re t j | d } y | j | Wn | j Yn X| j d rr d | _ n
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zAifc_write.__init__c C s | | _ t | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _
d | _ d | _ g | _
d | _ d | _ d S)Ns NONEs not compressedr r )rD
_AIFC_versionr@ rc re rA r[ r_ ra r] _nframeswritten _datawritten _datalengthrB _marklengthrE )rK r r r r rM 1 s zAifc_write.initfpc C s | j d S)N)rR )rK r r r __del__B s zAifc_write.__del__c C s | S)Nr )rK r r r rU E s zAifc_write.__enter__c G s | j d S)N)rR )rK rV r r r rW H s zAifc_write.__exit__c C s" | j r t d d | _ d S)Nz0cannot change parameters after starting to writer )r r rE )rK r r r aiffN s zAifc_write.aiffc C s" | j r t d d | _ d S)Nz0cannot change parameters after starting to writer )r r rE )rK r r r aifcS s zAifc_write.aifcc C s: | j r t d | d k r- t d | | _ d S)Nz0cannot change parameters after starting to writer zbad # of channels)r r r[ )rK nchannelsr r r setnchannelsX s
zAifc_write.setnchannelsc C s | j s t d | j S)Nznumber of channels not set)r[ r )rK r r r r\ _ s zAifc_write.getnchannelsc C sF | j r t d | d k s- | d k r9 t d | | _ d S)Nz0cannot change parameters after starting to writer r
zbad sample width)r r r_ )rK sampwidthr r r setsampwidthd s
zAifc_write.setsampwidthc C s | j s t d | j S)Nzsample width not set)r_ r )rK r r r r` k s zAifc_write.getsampwidthc C s: | j r t d | d k r- t d | | _ d S)Nz0cannot change parameters after starting to writer zbad frame rate)r r ra )rK framerater r r setframeratep s
zAifc_write.setframeratec C s | j s t d | j S)Nzframe rate not set)ra r )rK r r r rb w s zAifc_write.getframeratec C s" | j r t d | | _ d S)Nz0cannot change parameters after starting to write)r r r] )rK rq r r r
setnframes| s zAifc_write.setnframesc C s | j S)N)r )rK r r r r^ s zAifc_write.getnframesc C sC | j r t d | d k r- t d | | _ | | _ d S)
Nz0cannot change parameters after starting to write NONE ulaw ULAW alaw ALAW G722z unsupported compression type)r r r r r r )r r rc re )rK comptypecompnamer r r setcomptype s zAifc_write.setcomptypec C s | j S)N)rc )rK r r r rd s zAifc_write.getcomptypec C s | j S)N)re )rK r r r rf s zAifc_write.getcompnamec C s | \ } } } } } } | j r- t d | d k rE t d | j | | j | | j | | j | | j | | d S)
Nz0cannot change parameters after starting to write NONE ulaw ULAW alaw ALAW G722z unsupported compression type)r r r r r r )r r r r r r r )rK paramsr r r rq r r r r r setparams s
zAifc_write.setparamsc C sU | j s | j s | j r* t d t | j | j | j | j | j | j S)Nznot all parameters set)r[ r_ ra r r= r] rc re )rK r r r rg s zAifc_write.getparamsc C s | d k r t d | d k r0 t d t | t sK t d xN t t | j D]7 } | | j | d k ra | | | f | j | 0z marker position must be >= 0zmarker name must be bytes)r rO bytesr r0 rB r )rK rj rm r r r r r setmark s zAifc_write.setmarkc C sA x% | j D] } | | d k r
| Sq
Wt d j | d S)Nr zmarker {0!r} does not exist)rB r ri )rK rj rk r r r rl s zAifc_write.getmarkc C s t | j d k r d S| j S)Nr )r0 rB )rK r r r rh s zAifc_write.getmarkersc C s | j S)N)r )rK r r r rZ s zAifc_write.tellc C s t | t t f s* t | j d } | j t | t | | j | j } | j ro | j | } | j
j | | j | | _ | j
t | | _
d S)Nr/ )rO r bytearray
memoryviewcast_ensure_header_writtenr0 r_ r[ rA rD r' r r )rK r rq r r r writeframesraw s zAifc_write.writeframesrawc C s? | j | | j | j k s1 | j | j k r; | j d S)N)r r r] r r _patchheader)rK r r r r writeframes s
zAifc_write.writeframesc C s | j d k r d Sz | j d | j d @rP | j j d | j d | _ | j | j | j k s | j | j k s | j r | j Wd d | _
| j } d | _ | j Xd S)Nr r s ) rD r r r'
_writemarkersr r] r r r rA rR )rK r! r r r rR s
zAifc_write.closec C s d d l } | j | d S)Nr r )rs Zlin2alaw)rK r rs r r r _lin2alaw s zAifc_write._lin2alawc C s d d l } | j | d S)Nr r )rs Zlin2ulaw)rK r rs r r r _lin2ulaw s zAifc_write._lin2ulawc C sI d d l } t | d s$ d | _ | j | d | j \ } | _ | S)Nr rv r )rs rw rv Z lin2adpcm)rK r rs r r r
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!zAifc_write._lin2adpcmc C s | j s | j d k rE | j s* d | _ | j d k rE t d | j sZ t d | j so t d | j s t d
| j | d S) N ULAW ulaw ALAW alaw G722r 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 rc r_ r r[ ra
_write_header)rK Zdatasizer r r r s z!Aifc_write._ensure_header_writtenc C s[ | j d k r | j | _ n9 | j d k r< | j | _ n | j d k rW | j | _ d S)Ns G722 ulaw ULAW alaw ALAW)r r )r r )rc r rA r r )rK r r r _init_compression s z Aifc_write._init_compressionc C s
| j r" | j d k r" | j | j j d | j sR | | j | j | _ | j | j | j | _ | j d @r | j d | _ | j r| j d k r | j d | _ | j d @r| j d | _ n@ | j d k r| j d
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d k r| j j | _ t | j | j d t | j d t | j d d S)Ns NONEs FORMr ulaw ULAW alaw ALAWr G722 r
s AIFCs FVERs AIFFs COMMr? s SSNDr )r r r r )r r r r r )rE rc r rD r' r] r[ r_ r rZ _form_length_posAttributeErrorOSError_write_form_lengthr- r@ r* _nframes_posr: ra r3 re _ssnd_length_pos)rK Z
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"z Aifc_write._write_form_lengthc C s0 | j j } | j d @r< | j d } | j j d n | j } | | j k r | j | j k r | j d k r | j j | d d S| j j | j d | j
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d t | j | d | j j | d | j | _ | | _ d S)Nr s r r? )rD rZ r r' r r] r r ro r r r r- r )rK Zcurposr r r r r r W s&
zAifc_write._patchheaderc C s t | j d k r d S| j j d d } xX | j D]M } | \ } } } | t | d d } t | d @d k r9 | d } q9 Wt | j | | d | _ t | j t | j xP | j D]E } | \ } } } t | j | t | j | t | j | q Wd S)Nr s MARKr r r? )r0 rB rD r' r- r r* r3 )rK r rk rj rm r r r r r m s"
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r c C si | d k r- t | d r' | j } n d } | d k rC t | S| d k rY t | St d d S) NmoderN rr r z$mode must be 'r', 'rb', 'w', or 'wb')r rN )r r )rw r r> 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.)1r rQ r __all__ Exceptionr r r r r r r r r& r* r+ r, r- r3 r: rL r; collectionsr< r= r> r r r r sysargvr fnr! printr\ r^ r` rb rd rf Zgngr rg rr r r r r r r sf
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