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rjd | _ Yn Xd S)Nr zbad magic numberr zheader size too small�d z header size ridiculously largez encoding not (yet) supportedr r r r zunknown encodings � ) r3 � _soundposr! r �AUDIO_FILE_MAGICr Z _hdr_size�
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Au_read.getfpc C s | j S)N)rJ )r0 r r r � getnchannels� s zAu_read.getnchannelsc C s | j S)N)rC )r0 r r r � getsampwidth� s zAu_read.getsampwidthc C s | j S)N)rI )r0 r r r � getframerate� s zAu_read.getframeratec C s4 | j t k r t S| j t k r0 | j | j Sd S)Nr )r= r> r? r@ rD )r0 r r r �
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zAu_read.getcompnamec C s= t | j � | j � | j � | j � | j � | j � � S)N)r rT rU rV rW r[ r\ )r0 r r r � getparams s zAu_read.getparamsc C s d S)Nr )r0 r r r �
getmarkers s zAu_read.getmarkersc C s t d � � d S)Nzno marks)r )r0 �idr r r �getmark s zAu_read.getmarkc C s� | j t k r� | t k r- | j j � } n | j j | | j � } | j t | � | j 7_ | j t k r� d d l } | j
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readframes s zAu_read.readframesc C s; | j d k r t d � � | j j | j � d | _ d S)Nz cannot seekr )rN rP r3 �seekr; )r0 r r r �rewind s zAu_read.rewindc C s | j S)N)r; )r0 r r r rM s z Au_read.tellc C sp | d k s | | j � k r* t d � � | j d k rE t d � � | j j | j | | j � | | _ d S)Nr zposition not in rangez cannot seek)rW r rN rP r3 re rD r; )r0 �posr r r �setpos! s zAu_read.setposc C s/ | j } | r+ d | _ | j r+ | j � d S)N)r3 r. r4 )r0 r r r r r4 ) s
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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/ d0 � Z d1 d2 � Z d3 S)4�Au_writec C s\ t | � t d � k rB d d l } | j | d � } d | _ n d | _ | j | � d S)Nr) r �wbTF)r+ r, r- r. r/ )r0 r1 r, r r r r2 2 s zAu_write.__init__c C s | j r | j � d | _ d S)N)r3 r4 )r0 r r r r5 ; s
zAu_write.__del__c C s | S)Nr )r0 r r r r6 @ s zAu_write.__enter__c G s | j � d S)N)r4 )r0 r7 r r r r8 C s zAu_write.__exit__c C sg | | _ d | _ d | _ d | _ d | _ t | _ d | _ d | _ d | _ d | _
d | _ d S)Nr r: rX ) r3 rI rJ rC rD r> �_nframes�_nframeswritten� _datawritten� _datalengthrK � _comptype)r0 r r r r r/ F s zAu_write.initfpc C s: | j r t d � � | d k r- t d � � | | _ d S)Nz0cannot change parameters after starting to writer r r z"only 1, 2, or 4 channels supported)r r r )rl r rJ )r0 � nchannelsr r r � setnchannelsS s
zAu_write.setnchannelsc C s | j s t d � � | j S)Nznumber of channels not set)rJ r )r0 r r r rT Z s zAu_write.getnchannelsc C s: | j r t d � � | d k r- t d � � | | _ d S)Nz0cannot change parameters after starting to writer r r r zbad sample width)r r r r )rl r rC )r0 � sampwidthr r r � setsampwidth_ s
zAu_write.setsampwidthc C s | j s t d � � | j S)Nzsample width not specified)rI r rC )r0 r r r rU f s zAu_write.getsampwidthc C s" | j r t d � � | | _ d S)Nz0cannot change parameters after starting to write)rl r rI )r0 � framerater r r � setframeratek s zAu_write.setframeratec C s | j s t d � � | j S)Nzframe rate not set)rI r )r0 r r r rV p s zAu_write.getframeratec C s: | j r t d � � | d k r- t d � � | | _ d S)Nz0cannot change parameters after starting to writer z # of frames cannot be negative)rl r rk )r0 rc r r r �
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zAu_write.setnframesc C s | j S)N)rl )r0 r r r rW | s zAu_write.getnframesc C s( | d k r | | _ n t d � � d S)NrZ rX zunknown compression type)rZ rX )ro r )r0 r+ �namer r r � setcomptype s zAu_write.setcomptypec C s | j S)N)ro )r0 r r r r[ � s zAu_write.getcomptypec C s. | j d k r d S| j d k r& d Sd Sd S)NrX zCCITT G.711 u-lawrY zCCITT G.711 A-lawznot compressed)ro )r0 r r r r\ � s
zAu_write.getcompnamec C s` | \ } } } } } } | j | � | j | � | j | � | j | � | j | | � d S)N)rq rs ru rv rx )r0 �paramsrp rr rt rc ZcomptypeZcompnamer r r � setparams� s
zAu_write.setparamsc C s= t | j � | j � | j � | j � | j � | j � � S)N)r rT rU rV rW r[ r\ )r0 r r r r] � s zAu_write.getparamsc C s | j S)N)rl )r0 r r r rM � s z
Au_write.tellc C s� t | t t f � s* t | � j d � } | j � | j d k rd d d l } | j | | j � } t
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zAu_write.writeframesc C s | j r{ zI | j � | j | j k s: | j | j k rD | j � | j j � Wd | j } d | _ | j rz | j � Xd S)N)
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zAu_write.closec C sV | j sR | j s t d � � | j s3 t d � � | j sH t d � � | j � d S)Nz# of channels not specifiedzsample width not specifiedzframe rate not specified)rl rJ r rC rI �
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s r i����)ro rC rE rD rF rG rH r rA rJ r' r3 r< ra rK rk r> rM �_form_length_posrO rP rn rI r" )r0 �encodingZ header_size�lengthr r r r� � sJ zAu_write._write_headerc C sd | j d k r t d � � | j j | j � t | j | j � | j | _ | j j d d � d S)Nz cannot seekr r )r� rP r3 re r' rm rn )r0 r r r r� � s zAu_write._patchheaderN) r r r r2 r5 r6 r8 r/ rq rT rs rU ru rV rv rW rx r[ r\ rz r] rM r� r� r4 r� r� r� r r r r ri 0 s2
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