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zAu_read.initfpc C s | j S )N)r3 )r0 r r r getfp s z
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zAu_read.getnframesc C s$ | j tkrdS | j tkr dS dS d S )NULAWALAWNONE)r@ rB rC )r0 r r r getcomptype s
zAu_read.getcomptypec C s$ | j tkrdS | j tkr dS dS d S )NzCCITT G.711 u-lawzCCITT G.711 A-lawznot compressed)r@ rB rC )r0 r r r getcompname s
zAu_read.getcompnamec C s* t | j | j | j | j | j | j S )N)r rU rV rW rX r\ r] )r0 r r r getparams s zAu_read.getparamsc C s d S )Nr )r0 r r r
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zAu_read.readframesc C s* | j d krtd| jj| j d| _d S )Nz cannot seekr )rO rQ r3 seekr< )r0 r r r rewind s
zAu_read.rewindc C s | j S )N)r< )r0 r r r rN s z Au_read.tellc C sP |dk s|| j kr td| jd kr.td| jj| j|| j || _d S )Nr zposition not in rangez cannot seek)rX r rO rQ r3 rf rE r< )r0 posr r r setpos! s
zAu_read.setposc C s" | j }|r d | _ | jr |j d S )N)r3 r. r4 )r0 r r r r r4 ) s
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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/d0 Zd1d2 Zd3S )4Au_writec C s@ t |t dkr,dd l}|j|d}d| _nd| _| 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 sF || _ d| _d| _d| _d| _t| _d| _d| _d| _ d| _
d| _ d S )Nr r; rY ) r3 rJ rK rD rE r? _nframes_nframeswritten _datawritten _datalengthrL _comptype)r0 r r r r r/ F s zAu_write.initfpc C s( | j rtd|dkr td|| _d S )Nz0cannot change parameters after starting to writer r r z"only 1, 2, or 4 channels supported)r r r )rm r rK )r0 nchannelsr r r setnchannelsS s
zAu_write.setnchannelsc C s | j std| j S )Nznumber of channels not set)rK r )r0 r r r rU Z s zAu_write.getnchannelsc C s( | j rtd|dkr td|| _d S )Nz0cannot change parameters after starting to writer r r r zbad sample width)r r r r )rm r rD )r0 sampwidthr r r setsampwidth_ s
zAu_write.setsampwidthc C s | j std| jS )Nzsample width not specified)rJ r rD )r0 r r r rV f s zAu_write.getsampwidthc C s | j rtd|| _d S )Nz0cannot change parameters after starting to write)rm r rJ )r0 framerater r r setframeratek s zAu_write.setframeratec C s | j std| j S )Nzframe rate not set)rJ r )r0 r r r rW p s zAu_write.getframeratec C s( | j rtd|dk r td|| _d S )Nz0cannot change parameters after starting to writer z # of frames cannot be negative)rm r rl )r0 rd r r r
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zAu_write.setnframesc C s | j S )N)rm )r0 r r r rX | s zAu_write.getnframesc C s |dkr|| _ ntdd S )Nr[ rY zunknown compression type)r[ rY )rp r )r0 r+ namer r r setcomptype s zAu_write.setcomptypec C s | j S )N)rp )r0 r r r r\ s zAu_write.getcomptypec C s$ | j dkrdS | j dkr dS dS d S )NrY zCCITT G.711 u-lawrZ zCCITT G.711 A-lawznot compressed)rp )r0 r r r r] s
zAu_write.getcompnamec C sH |\}}}}}}| j | | j| | j| | j| | j|| d S )N)rr rt rv rw ry )r0 Zparamsrq rs ru rd ZcomptypeZcompnamer r r setparams s
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r3 r rm rl ro rn r flushr. r4 )r0 r r r r r4 s zAu_write.closec C s< | j s8| jstd| js"td| js0td| j d S )Nz# of channels not specifiedzsample width not specifiedzframe rate not specified)rm rK r rD rJ
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zAu_write._write_headerc C sH | j d krtd| jj| j t| j| j | j| _| jjdd d S )Nz cannot seekr r )r rQ r3 rf r' rn ro )r0 r r r r s
zAu_write._patchheaderN) r r r r2 r5 r6 r8 r/ rr rU rt rV rv rW rw rX ry r\ r] rz r^ rN r r r4 r r r r r r r rj 0 s2
*rj Nc C sJ |d kr t | dr| j}nd}|dkr.t| S |dkr>t| S tdd S ) Nmoder* rwrk z$mode must be 'r', 'rb', 'w', or 'wb')r r* )r rk )hasattrr r( rj r )r1 r r r r r- s
r- )N) collectionsr r r= rB rF rG rH rI ZAUDIO_FILE_ENCODING_FLOATZAUDIO_FILE_ENCODING_DOUBLEZ AUDIO_FILE_ENCODING_ADPCM_G721Z AUDIO_FILE_ENCODING_ADPCM_G722Z AUDIO_FILE_ENCODING_ADPCM_G723_3Z AUDIO_FILE_ENCODING_ADPCM_G723_5rC r? rA Exceptionr r r' r( rj r- Zopenfpr r r r j s> Q