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_write_ushort s r+ c C s | j tjd| d S )Nz>l)r' r r( )r! r) r r r _write_long s r, c C s | j tjd| d S )Nz>L)r' r r( )r! r) r r r _write_ulong s r- c C sR t |dkrtd| jtjdt | | j| t |d@ dkrN| jd d S )N z%string exceeds maximum pstring lengthBr r )len
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r4 c C s dd l }|dk r d}|d }nd}|dkr8d}d}d}n|j|\}}|dks^|dks^||krp|dB }d}d}nh|d }|dk r|j||}d}||B }|j|d}|j|}t|}|j|| d}|j|}t|}t| | t| | t| | d S ) Nr i r i @ i i? r )mathZfrexpZldexpZfloorintr+ r- ) r! r) r6 r# r" r$ r% ZfmantZfsmantr r r _write_float s8
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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
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_aifcZ_comm_chunk_read _ssnd_chunk_ssnd_seek_neededr _read_comm_chunkr _readmarkskip)selfr chunkZformdataZ chunknamer r r r initfp4 sJ
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isinstancestrbuiltinsr rK close)rI r! file_objectr r r __init__\ s
zAifc_read.__init__c C s | S )Nr )rI r r r __enter__h s zAifc_read.__enter__c G s | j d S )N)rP )rI argsr r r __exit__k s zAifc_read.__exit__c C s | j S )N)rB )rI r r r getfpq s zAifc_read.getfpc C s d| _ d| _d S )Nr r )rE rA )rI r r r rewindt s zAifc_read.rewindc C s | j }|d k r d | _ |j d S )N)rB rP )rI r r r r rP x s zAifc_read.closec C s | j S )N)rA )rI r r r tell~ s zAifc_read.tellc C s | j S )N)
_nchannels)rI r r r getnchannels s zAifc_read.getnchannelsc C s | j S )N)_nframes)rI r r r
getnframes s zAifc_read.getnframesc C s | j S )N)
_sampwidth)rI r r r getsampwidth s zAifc_read.getsampwidthc C s | j S )N)
_framerate)rI r r r getframerate s zAifc_read.getframeratec C s | j S )N) _comptype)rI r r r getcomptype s zAifc_read.getcomptypec C s | j S )N) _compname)rI r r r getcompname s zAifc_read.getcompnamec C s* t | j | j | j | j | j | j S )N)r; rZ r^ r` r\ rb rd )rI r r r getparams s zAifc_read.getparamsc C s t | jdkrd S | jS )Nr )r1 r@ )rI r r r
getmarkers s zAifc_read.getmarkersc C s2 x | j D ]}||d kr|S qW tdj|d S )Nr zmarker {0!r} does not exist)r@ r format)rI idmarkerr r r getmark s zAifc_read.getmarkc C s* |dk s|| j krtd|| _d| _d S )Nr zposition not in ranger )r[ r rA rE )rI posr r r setpos s zAifc_read.setposc C s | j rD| jjd | jjd}| j| j }|r>| jj|d d| _ |dkrPdS | jj|| j }| jrv|rv| j|}| jt|| j| j | _|S )Nr r= r )
rE rD seekr
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readframes s
zAifc_read.readframesc C s dd l }|j|dS )Nr r )audioopZalaw2lin)rI r rq r r r _alaw2lin s zAifc_read._alaw2linc C s dd l }|j|dS )Nr r )rq Zulaw2lin)rI r rq r r r _ulaw2lin s zAifc_read._ulaw2linc C s2 dd l }t| dsd | _|j|d| j\}| _|S )Nr _adpcmstater )rq hasattrrt Z adpcm2lin)rI r rq r r r
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zAifc_read._adpcm2linc C s. t || _t|| _t |d d | _tt|| _| j| j | _| j r d}|j
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s NONEs G722 ulaw ULAW alaw ALAWz unsupported compression typer s not compressedr )rz r{ )r| r} )r rY r r[ r] r7 r& r_ rn rC Z chunksizewarningswarnr
ra r r rm r rc rv r? rs rr r )rI rJ Zkludger r r r rF s<
zAifc_read._read_comm_chunkc C s t |}yHxBt|D ]6}t |}t|}t|}|s8|r| jj|||f qW W nD tk
r dt| jt| jdkr|dnd|f }tj | Y nX d S )Nz;Warning: MARK chunk contains only %s marker%s instead of %sr r3 )
r ranger r r@ appendr r1 r~ r )rI rJ Znmarkersirh rk namewr r r rG s zAifc_read._readmark) r r r rB rK rR rS rU rV rW rP rX rZ r\ r^ r` rb rd re rf rj rl rp rr rs rv rF rG r r r r r< s2 $( &r< c @ s0 e Zd ZdZdd Zdd Zdd Zdd Zd
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dd Zdd Zdd Zd d Zd d Zd d! Zd"d# Zd$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 |trNtj|d}y| j| W n |j Y nX |jdrXd| _n
| j| d S )Nwbz.aiffr )rM rN rO r rK rP endswithrC )rI r! rQ r r r rR + s
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 )rB
_AIFC_versionr> ra rc r? rY r] r_ r[ _nframeswritten _datawritten _datalengthr@ _marklengthrC )rI r r r r rK ; s zAifc_write.initfpc C s | j d S )N)rP )rI r r r __del__L s zAifc_write.__del__c C s | S )Nr )rI r r r rS O s zAifc_write.__enter__c G s | j d S )N)rP )rI rT r r r rU R s zAifc_write.__exit__c C s | j rtdd| _d S )Nz0cannot change parameters after starting to writer )r r rC )rI r r r aiffX s zAifc_write.aiffc C s | j rtdd| _d S )Nz0cannot change parameters after starting to writer )r r rC )rI r r r aifc] s zAifc_write.aifcc C s( | j rtd|dk r td|| _d S )Nz0cannot change parameters after starting to writer zbad # of channels)r r rY )rI nchannelsr r r setnchannelsb s
zAifc_write.setnchannelsc C s | j std| j S )Nznumber of channels not set)rY r )rI r r r rZ i s zAifc_write.getnchannelsc C s0 | j rtd|dk s |dkr&td|| _d S )Nz0cannot change parameters after starting to writer r
zbad sample width)r r r] )rI sampwidthr r r setsampwidthn s
zAifc_write.setsampwidthc C s | j std| j S )Nzsample width not set)r] r )rI r r r r^ u s zAifc_write.getsampwidthc C s( | j rtd|dkr td|| _d S )Nz0cannot change parameters after starting to writer zbad frame rate)r r r_ )rI framerater r r setframeratez s
zAifc_write.setframeratec C s | j std| j S )Nzframe rate not set)r_ r )rI r r r r` s zAifc_write.getframeratec C s | j rtd|| _d S )Nz0cannot change parameters after starting to write)r r r[ )rI ro r r r
setnframes s zAifc_write.setnframesc C s | j S )N)r )rI r r r r\ s zAifc_write.getnframesc C s. | j rtd|d kr td|| _|| _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 ra rc )rI comptypecompnamer r r setcomptype s zAifc_write.setcomptypec C s | j S )N)ra )rI r r r rb s zAifc_write.getcomptypec C s | j S )N)rc )rI r r r rd s zAifc_write.getcompnamec C sf |\}}}}}}| j r td|d kr.td| 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 )rI Zparamsr r r ro r r r r r setparams s
zAifc_write.setparamsc C s> | j s| j s| j r tdt| j | j| j| j| j| jS )Nznot all parameters set)rY r] r_ r r; r[ ra rc )rI r r r re s zAifc_write.getparamsc C s |dkrt d|dk r t dt|ts2t dx<tt| jD ]*}|| j| d krB|||f| j|< d S qBW | jj|||f d S )Nr zmarker ID must be > 0z marker position must be >= 0zmarker name must be bytes)r rM bytesr r1 r@ r )rI rh rk r r r r r setmark s
zAifc_write.setmarkc C s2 x | j D ]}||d kr|S qW tdj|d S )Nr zmarker {0!r} does not exist)r@ r rg )rI rh ri r r r rj s zAifc_write.getmarkc C s t | jdkrd S | jS )Nr )r1 r@ )rI r r r rf s zAifc_write.getmarkersc C s | j S )N)r )rI r r r rX s zAifc_write.tellc C sz t |ttfs t|jd}| jt| t|| j| j }| j rN| j |}| j
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d S )Nr/ )rM r bytearray
memoryviewcast_ensure_header_writtenr1 r] rY r? rB r' r r )rI r ro r r r writeframesraw s
zAifc_write.writeframesrawc C s. | j | | j| jks"| j| jkr*| j d S )N)r r r[ r r _patchheader)rI r r r r writeframes s
zAifc_write.writeframesc C s | j d krd S z^| jd | jd@ r<| j jd | jd | _| j | j| jksb| j| jksb| jrj| j W d d | _
| j }d | _ |j X d S )Nr r r0 ) rB r r r'
_writemarkersr r[ r r r r? rP )rI r! r r r rP s
zAifc_write.closec C s dd l }|j|dS )Nr r )rq Zlin2alaw)rI r rq r r r _lin2alaw s zAifc_write._lin2alawc C s dd l }|j|dS )Nr r )rq Zlin2ulaw)rI r rq r r r _lin2ulaw s zAifc_write._lin2ulawc C s2 dd l }t| dsd | _|j|d| j\}| _|S )Nr rt r )rq ru rt Z lin2adpcm)rI r rq r r r
_lin2adpcm s
zAifc_write._lin2adpcmc C sf | j sb| jd kr.| js d| _| jdkr.td| js<td| jsJtd | jsXtd
| 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 ra r] r rY r_
_write_header)rI Zdatasizer r r r s
z!Aifc_write._ensure_header_writtenc C s> | j dkr| j| _n&| j dkr(| j| _n| j dkr:| j| _d S )Ns G722 ulaw ULAW alaw ALAW)r r )r r )ra r r? r r )rI r r r _init_compression s
z Aifc_write._init_compressionc C sL | j r| jdkr| j | jjd | js<|| j| j | _| j| j | j | _| jd@ rf| jd | _| j r| jdkr| jd | _| jd@ r| jd | _n0| jd kr| jd
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d k r | jj | _t| j| jd t| jd t| jd 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 )rC ra r rB r' r[ rY r] r rX _form_length_posAttributeErrorOSError_write_form_lengthr- r> r* _nframes_posr8 r_ r4 rc _ssnd_length_pos)rI Z
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d t | j |d | j j|d | j| _|| _d S )Nr r0 r r= )rB rX r r' r r[ r r rm r r r r- r )rI Zcurposr r r r r r a s&
zAifc_write._patchheaderc C s t | jdkrd S | jjd d}xD| jD ]:}|\}}}|t | d d }t |d@ dkr*|d }q*W t| j| |d | _t| jt | j x<| jD ]2}|\}}}t| j| t| j| t| j| qW d S )Nr s MARKr r r= )r1 r@ rB r' r- r r* r4 )rI r ri rh rk r r r r r w s"
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