Your IP : 18.221.147.98
�
�mec @ s� d Z d d l Z d d d g Z d e f d � � YZ d Z d Z d d l Z e j d d � d k rp d Z
n d Z
d d
l m Z d d d � � YZ
d d d � � YZ d d � Z e Z d S( s
Stuff to parse WAVE files.
Usage.
Reading WAVE files:
f = wave.open(file, 'r')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods read(), seek(), and close().
When the setpos() and rewind() methods are not used, the seek()
method is not necessary.
This returns an instance of a class with the following public methods:
getnchannels() -- returns number of audio channels (1 for
mono, 2 for stereo)
getsampwidth() -- returns sample width in bytes
getframerate() -- returns sampling frequency
getnframes() -- returns number of audio frames
getcomptype() -- returns compression type ('NONE' for linear samples)
getcompname() -- returns human-readable version of
compression type ('not compressed' linear samples)
getparams() -- returns a tuple consisting of all of the
above in the above order
getmarkers() -- returns None (for compatibility with the
aifc module)
getmark(id) -- raises an error since the mark does not
exist (for compatibility with the aifc module)
readframes(n) -- returns at most n frames of audio
rewind() -- rewind to the beginning of the audio stream
setpos(pos) -- seek to the specified position
tell() -- return the current position
close() -- close the instance (make it unusable)
The position returned by tell() and the position given to setpos()
are compatible and have nothing to do with the actual position in the
file.
The close() method is called automatically when the class instance
is destroyed.
Writing WAVE files:
f = wave.open(file, 'w')
where file is either the name of a file or an open file pointer.
The open file pointer must have methods write(), tell(), seek(), and
close().
This returns an instance of a class with the following public methods:
setnchannels(n) -- set the number of channels
setsampwidth(n) -- set the sample width
setframerate(n) -- set the frame rate
setnframes(n) -- set the number of frames
setcomptype(type, name)
-- set the compression type and the
human-readable compression type
setparams(tuple)
-- set all parameters at once
tell() -- return current position in output file
writeframesraw(data)
-- write audio frames without pathing up the
file header
writeframes(data)
-- write audio frames and patch up the file header
close() -- patch up the file header and close the
output file
You should set the parameters before the first writeframesraw or
writeframes. The total number of frames does not need to be set,
but when it is set to the correct value, the header does not have to
be patched up.
It is best to first set all parameters, perhaps possibly the
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes('') or
close() to patch up the sizes in the header.
The close() method is called automatically when the class instance
is destroyed.
i����Nt opent openfpt Errorc B s e Z RS( ( t __name__t
__module__( ( ( s /usr/lib64/python2.7/wave.pyR N s i t bt ht lt i ( t Chunkt Wave_readc B s� e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
d � Z d
� Z d � Z
d � Z d
� Z d � Z d � Z d � Z d � Z d � Z d � Z RS( sP Variables used in this class:
These variables are available to the user though appropriate
methods of this class:
_file -- the open file with methods read(), close(), and seek()
set through the __init__() method
_nchannels -- the number of audio channels
available through the getnchannels() method
_nframes -- the number of audio frames
available through the getnframes() method
_sampwidth -- the number of bytes per audio sample
available through the getsampwidth() method
_framerate -- the sampling frequency
available through the getframerate() method
_comptype -- the AIFF-C compression type ('NONE' if AIFF)
available through the getcomptype() method
_compname -- the human-readable AIFF-C compression type
available through the getcomptype() method
_soundpos -- the position in the audio stream
available through the tell() method, set through the
setpos() method
These variables are used internally only:
_fmt_chunk_read -- 1 iff the FMT chunk has been read
_data_seek_needed -- 1 iff positioned correctly in audio
file for readframes()
_data_chunk -- instantiation of a chunk class for the DATA chunk
_framesize -- size of one frame in the file
c C sd d | _ d | _ t | d d �| _ | j j � d k rH t d � n | j j d � d k rl t d � n d | _ d | _ x� d | _
y t | j d d �} Wn t k
r� Pn X| j � } | d k r� | j | � d | _ nJ | d
k r3| j s
t d � n | | _ | j
| j | _ d | _
Pn | j � q� | j sT| j r`t d � n d S(
Ni t bigendiant RIFFs file does not start with RIFF idi t WAVEs not a WAVE filei s fmt t datas data chunk before fmt chunks# fmt chunk and/or data chunk missing( t Nonet _convertt _soundposR t _filet getnameR t readt _fmt_chunk_readt _data_chunkt _data_seek_neededt EOFErrort _read_fmt_chunkt chunksizet
_framesizet _nframest skip( t selft filet chunkt chunkname( ( s /usr/lib64/python2.7/wave.pyt initfp} s:
c C sn d | _ t | t � r6 t j | d � } | | _ n y | j | � Wn | j rc | j � n � n Xd S( Nt rb( R t _i_opened_the_filet
isinstancet
basestringt __builtin__R R" t close( R t f( ( s /usr/lib64/python2.7/wave.pyt __init__� s
c C s | j � d S( N( R( ( R ( ( s /usr/lib64/python2.7/wave.pyt __del__� s c C s | j S( N( R ( R ( ( s /usr/lib64/python2.7/wave.pyt getfp� s c C s d | _ d | _ d S( Ni i ( R R ( R ( ( s /usr/lib64/python2.7/wave.pyt rewind� s c C s/ | j r" | j j � d | _ n d | _ d S( N( R$ R( R R ( R ( ( s /usr/lib64/python2.7/wave.pyR( � s
c C s | j S( N( R ( R ( ( s /usr/lib64/python2.7/wave.pyt tell� s c C s | j S( N( t
_nchannels( R ( ( s /usr/lib64/python2.7/wave.pyt getnchannels� s c C s | j S( N( R ( R ( ( s /usr/lib64/python2.7/wave.pyt
getnframes� s c C s | j S( N( t
_sampwidth( R ( ( s /usr/lib64/python2.7/wave.pyt getsampwidth� s c C s | j S( N( t
_framerate( R ( ( s /usr/lib64/python2.7/wave.pyt getframerate� s c C s | j S( N( t _comptype( R ( ( s /usr/lib64/python2.7/wave.pyt getcomptype� s c C s | j S( N( t _compname( R ( ( s /usr/lib64/python2.7/wave.pyt getcompname� s c C s: | j � | j � | j � | j � | j � | j � f S( N( R0 R3 R5 R1 R7 R9 ( R ( ( s /usr/lib64/python2.7/wave.pyt getparams� s c C s d S( N( R ( R ( ( s /usr/lib64/python2.7/wave.pyt
getmarkers� s c C s
t d � d S( Ns no marks( R ( R t id( ( s /usr/lib64/python2.7/wave.pyt getmark� s c C s= | d k s | | j k r' t d � n | | _ d | _ d S( Ni s position not in rangei ( R R R R ( R t pos( ( s /usr/lib64/python2.7/wave.pyt setpos� s c C s� | j rT | j j d d � | j | j } | rH | j j | d � n d | _ n | d k rd d S| j d k rNt rNd d l } | j } | j t | j � } | | j } | | j | j
| j k r� | j
| j | j } n | j | j
j
| � | j | | j | _ | j
} | j | | j | _ | j � | j � } n | j j | | j � } | j r�| r�| j | � } n | j t | � | j | j | _ | S( Ni t i i����( R R t seekR R R2 t
big_endiant arrayt _array_fmtsR/ R t size_readt fromfileR t byteswapt tostringR R t len( R t nframesR> RC R R t nitems( ( s /usr/lib64/python2.7/wave.pyt
readframes� s4
$c C s� t j d | j d � � \ } | _ | _ } } | t k ro t j d | j d � � d } | d d | _ n t d | f � | j | j | _ d | _ d
| _
d S( Ns <HHLLHi s <Hi i i i s unknown format: %rt NONEs not compressed( t structt unpackR R/ R4 t WAVE_FORMAT_PCMR2 R R R6 R8 ( R R t
wFormatTagt dwAvgBytesPerSect wBlockAlignt sampwidth( ( s /usr/lib64/python2.7/wave.pyR s 0 ( R R t __doc__R" R* R+ R, R- R( R. R0 R1 R3 R5 R7 R9 R: R; R= R? RL R ( ( ( s /usr/lib64/python2.7/wave.pyR
^ s(
&t
Wave_writec B s� e Z d Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z
d � Z d
� Z d � Z
d � Z d
� Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z d � Z RS( s� Variables used in this class:
These variables are user settable through appropriate methods
of this class:
_file -- the open file with methods write(), close(), tell(), seek()
set through the __init__() method
_comptype -- the AIFF-C compression type ('NONE' in AIFF)
set through the setcomptype() or setparams() method
_compname -- the human-readable AIFF-C compression type
set through the setcomptype() or setparams() method
_nchannels -- the number of audio channels
set through the setnchannels() or setparams() method
_sampwidth -- the number of bytes per audio sample
set through the setsampwidth() or setparams() method
_framerate -- the sampling frequency
set through the setframerate() or setparams() method
_nframes -- the number of audio frames written to the header
set through the setnframes() or setparams() method
These variables are used internally only:
_datalength -- the size of the audio samples written to the header
_nframeswritten -- the number of frames actually written
_datawritten -- the size of the audio samples actually written
c C sn d | _ t | t � r6 t j | d � } | | _ n y | j | � Wn | j rc | j � n � n Xd S( Nt wb( R R$ R% R& R' R R" R( ( R R) ( ( s /usr/lib64/python2.7/wave.pyR* , s
c C s^ | | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _ t
| _ d S( Ni ( R R R R/ R2 R4 R t _nframeswrittent _datawrittent _datalengtht Falset _headerwritten( R R ( ( s /usr/lib64/python2.7/wave.pyR" 8 s c C s | j � d S( N( R( ( R ( ( s /usr/lib64/python2.7/wave.pyR+ D s c C s: | j r t d � n | d k r- t d � n | | _ d S( Ns0 cannot change parameters after starting to writei s bad # of channels( RY R R/ ( R t nchannels( ( s /usr/lib64/python2.7/wave.pyt setnchannelsJ s
c C s | j s t d � n | j S( Ns number of channels not set( R/ R ( R ( ( s /usr/lib64/python2.7/wave.pyR0 Q s c C sF | j r t d � n | d k s- | d k r9 t d � n | | _ d S( Ns0 cannot change parameters after starting to writei i s bad sample width( RY R R2 ( R RT ( ( s /usr/lib64/python2.7/wave.pyt setsampwidthV s
c C s | j s t d � n | j S( Ns sample width not set( R2 R ( R ( ( s /usr/lib64/python2.7/wave.pyR3 ] s c C s: | j r t d � n | d k r- t d � n | | _ d S( Ns0 cannot change parameters after starting to writei s bad frame rate( RY R R4 ( R t framerate( ( s /usr/lib64/python2.7/wave.pyt setframerateb s
c C s | j s t d � n | j S( Ns frame rate not set( R4 R ( R ( ( s /usr/lib64/python2.7/wave.pyR5 i s c C s" | j r t d � n | | _ d S( Ns0 cannot change parameters after starting to write( RY R R ( R RJ ( ( s /usr/lib64/python2.7/wave.pyt
setnframesn s c C s | j S( N( RX ( R ( ( s /usr/lib64/python2.7/wave.pyR1 s s c C sC | j r t d � n | d k r- t d � n | | _ | | _ d S( Ns0 cannot change parameters after starting to writeRM s unsupported compression type( s NONE( RY R R6 R8 ( R t comptypet compname( ( s /usr/lib64/python2.7/wave.pyt setcomptypev s c C s | j S( N( R6 ( R ( ( s /usr/lib64/python2.7/wave.pyR7 ~ s c C s | j S( N( R8 ( R ( ( s /usr/lib64/python2.7/wave.pyR9 � s c C su | \ } } } } } } | j r- t d � n | j | � | j | � | j | � | j | � | j | | � d S( Ns0 cannot change parameters after starting to write( RY R R^ R_ Ra Rb Re ( R t paramsR] RT R` RJ Rc Rd ( ( s /usr/lib64/python2.7/wave.pyt setparams� s
c C sR | j s | j s | j r* t d � n | j | j | j | j | j | j f S( Ns not all parameters set( R/ R2 R4 R R R6 R8 ( R ( ( s /usr/lib64/python2.7/wave.pyR: � s c C s
t d � d S( Ns setmark() not supported( R ( R R< R> t name( ( s /usr/lib64/python2.7/wave.pyt setmark� s c C s
t d � d S( Ns no marks( R ( R R< ( ( s /usr/lib64/python2.7/wave.pyR= � s c C s d S( N( R ( R ( ( s /usr/lib64/python2.7/wave.pyR; � s c C s | j S( N( RX ( R ( ( s /usr/lib64/python2.7/wave.pyR. � s c C s� | j t | � � t | � | j | j } | j rH | j | � } n | j d k r� t r� d d l } | j t | j | � } | j � | j | j
� | j t | � | j | _ n& | j
j | � | j t | � | _ | j
| | _
d S( Ni i����( t _ensure_header_writtenRI R2 R/ R RB RC RD RG t tofileR RY t writeRX ( R R RJ RC ( ( s /usr/lib64/python2.7/wave.pyt writeframesraw� s
c C s0 | j | � | j | j k r, | j � n d S( N( Rm RZ RY t _patchheader( R R ( ( s /usr/lib64/python2.7/wave.pyt writeframes� s
c C st | j rN | j d � | j | j k r5 | j � n | j j � d | _ n | j rp | j j � d | _ n d S( Ni ( R Rj RZ RY Rn t flushR R$ R( ( R ( ( s /usr/lib64/python2.7/wave.pyR( � s
c C s\ | j sX | j s t d � n | j s3 t d � n | j sH t d � n | j | � n d S( Ns # channels not specifieds sample width not specifieds sampling rate not specified( R\ R/ R R2 R4 t
_write_header( R t datasize( ( s /usr/lib64/python2.7/wave.pyRj � s c C s | j s t � | j j d � | j sC | | j | j | _ n | j | j | j | _ | j j � | _ | j j t
j d d | j d d d t | j | j
| j | j
| j | j | j | j d d � � | j j � | _ | j j t
j d | j � � t | _ d S(
NR s <L4s4sLHHLLHH4si$ R
s fmt i i R s <L( R\ t AssertionErrorR Rl R R/ R2 RZ R. t _form_length_posRN t packRP R4 t _data_length_post True( R t
initlength( ( s /usr/lib64/python2.7/wave.pyRq � s
c C s� | j s t � | j | j k r% d S| j j � } | j j | j d � | j j t j
d d | j � � | j j | j d � | j j t j
d | j � � | j j | d � | j | _ d S( Ni s <Li$ ( R\ Rs RY RZ R R. RA Rt Rl RN Ru Rv ( R t curpos( ( s /usr/lib64/python2.7/wave.pyRn � s # ( R R RU R* R" R+ R^ R0 R_ R3 Ra R5 Rb R1 Re R7 R9 Rg R: Ri R= R; R. Rm Ro R( Rj Rq Rn ( ( ( s /usr/lib64/python2.7/wave.pyRV s6
c C si | d k r0 t | d � r' | j } q0 d } n | d k rF t | � S| d k r\ t | � St d � d S( Nt modeR# t rt wRW s$ mode must be 'r', 'rb', 'w', or 'wb'( R{ s rb( R| s wb( R t hasattrRz R
RV R ( R) Rz ( ( s /usr/lib64/python2.7/wave.pyR � s
( NR R NR ( ( ( RU R' t __all__t ExceptionR RP R RD RN Ru RB R R R
RV R R ( ( ( s /usr/lib64/python2.7/wave.pyt <module>H s ��