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zAifc_read.__init__c C s | S )Nr )rI r r r � __enter__h s zAifc_read.__enter__c G s | � � 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 | _ |�� 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)�
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getmarkers� s zAifc_read.getmarkersc C s2 x | j D ]}||d kr|S qW td�|���d S )Nr zmarker {0!r} does not exist)r@ r �format)rI �id�markerr 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| j�d� | j�d�}| j| j }|r>| j�|d � d| _ |dkrPdS | j�|| j �}| jrv|rv| �|�}| jt|�| j| j | _|S )Nr r= r )
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| j| _n4| jdk�r | j| _n | jdk�r6| j| _ntd��d| _n d | _d| _d S )N� r= r zbad sample widthzbad # of channels� r z Warning: bad COMM chunk size� r
r s NONEs G722)s ulaws ULAW)s alaws ALAWz unsupported compression typer s not compressed)r rY r r[ r] r7 r& r_ r rn rC Z chunksize�warnings�warnr
ra r r rm r rc rv r? rs rr )rI rJ Zkludger r r r rF � sD
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r� dt| j�t| j�dkr|dnd|f }t� |� Y nX d S )Nz;Warning: MARK chunk contains only %s marker%s instead of %sr � r3 )
r �ranger r r@ �appendr r1 rz r{ )rI rJ Znmarkers�irh rk �name�wr 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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_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 | � � d S )N)rP )rI r r r �__del__P s zAifc_write.__del__c C s | S )Nr )rI r r r rS S s zAifc_write.__enter__c G s | � � d S )N)rP )rI rT r r r rU V s zAifc_write.__exit__c C s | j rtd��d| _d S )Nz0cannot change parameters after starting to writer )r� r rC )rI r r r �aiff\ s zAifc_write.aiffc C s | j rtd��d| _d S )Nz0cannot change parameters after starting to writer )r� r rC )rI r r r �aifca 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 � setnchannelsf s
zAifc_write.setnchannelsc C s | j std��| j S )Nznumber of channels not set)rY r )rI r r r rZ m 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 � setsampwidthr s
zAifc_write.setsampwidthc C s | j std��| j S )Nzsample width not set)r] r )rI r r r r^ y 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 � setframerate~ 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��|dkr td��|| _|| _d S )Nz0cannot change parameters after starting to write)s NONEs ulaws ULAWs alaws ALAWs G722z unsupported compression type)r� r ra rc )rI �comptype�compnamer 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��|dkr.td��| �|� | �|� | �|� | �|� | �||� d S )Nz0cannot change parameters after starting to write)s NONEs ulaws ULAWs alaws ALAWs G722z unsupported compression type)r� r r� r� r� r� r� )rI �paramsr� r� r� ro r� r� r r r � setparams� s
zAifc_write.setparamsc C s8 | j r| jr| jstd��t| j | j| j| j| j| j�S )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 d��t|t�s2t d��x<tt| j��D ]*}|| j| d krB|||f| j|< d S qBW | j�|||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 td�|���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 | j�dkrd 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 |ttf�s t|��d�}| �t|�� t|�| j| j }| j rN| � |�}| j
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z!Aifc_write._ensure_header_writtenc C s> | j dkr| j| _n&| j dkr(| j| _n| j dkr:| j| _d S )Ns G722)s ulaws ULAW)s alaws ALAW)ra r� r? r� r� )rI r r r �_init_compression s
z Aifc_write._init_compressionc C sJ | j r| jdkr| �� | j�d� | js<|| j| j | _| j| j | j | _| jd@ rf| jd | _| j r�| jdkr�| jd | _| jd@ r�| jd | _n0| jdkr�| jd d | _| jd@ r�| jd | _y| j� � | _
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s AIFCs FVERs AIFFs COMM)s ULAWs ulaws ALAWs alaws G722r= s SSNDr )rC ra r� rB r' r[ rY r] r� rX �_form_length_pos�AttributeError�OSError�_write_form_lengthr- r> r* � _nframes_posr8 r_ r4 rc �_ssnd_length_pos)rI Z
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r� c C sJ |d kr t | d�r| j}nd}|dkr.t| �S |dkr>t| �S td��d S )N�moderL )�rrL )r� r� z$mode must be 'r', 'rb', 'w', or 'wb')ru r� r< r� r )r! r� r r r r � s
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