ó
|
K\¬Qc @ sP d Z d d l Z d d l Z d d d g Z d e f d YZ 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 d l m Z d f d YZ d f d YZ e d Z e Z e d k rLd d l Z e j d r<e j j d n e j d Z e e d Z d Ge GHd Ge j! GHd! Ge j" GHd" Ge j# GHd# Ge j$ GHd$ Ge j% GHd% Ge j& GHe j d& rIe j d& Z' d' Ge' GHe e' d( Z( e( j) e j* x* e j+ d) Z, e, r Pn e( j- e, qe( j. e j. d* GHn n d S(+ sD Stuff to parse AIFF-C and AIFF files.
|
|
Unless explicitly stated otherwise, the description below is true
|
both for AIFF-C files and AIFF files.
|
|
An AIFF-C file has the following structure.
|
|
+-----------------+
|
| FORM |
|
+-----------------+
|
| <size> |
|
+----+------------+
|
| | AIFC |
|
| +------------+
|
| | <chunks> |
|
| | . |
|
| | . |
|
| | . |
|
+----+------------+
|
|
An AIFF file has the string "AIFF" instead of "AIFC".
|
|
A chunk consists of an identifier (4 bytes) followed by a size (4 bytes,
|
big endian order), followed by the data. The size field does not include
|
the size of the 8 byte header.
|
|
The following chunk types are recognized.
|
|
FVER
|
<version number of AIFF-C defining document> (AIFF-C only).
|
MARK
|
<# of markers> (2 bytes)
|
list of markers:
|
<marker ID> (2 bytes, must be > 0)
|
<position> (4 bytes)
|
<marker name> ("pstring")
|
COMM
|
<# of channels> (2 bytes)
|
<# of sound frames> (4 bytes)
|
<size of the samples> (2 bytes)
|
<sampling frequency> (10 bytes, IEEE 80-bit extended
|
floating point)
|
in AIFF-C files only:
|
<compression type> (4 bytes)
|
<human-readable version of compression type> ("pstring")
|
SSND
|
<offset> (4 bytes, not used by this program)
|
<blocksize> (4 bytes, not used by this program)
|
<sound data>
|
|
A pstring consists of 1 byte length, a string of characters, and 0 or 1
|
byte pad to make the total length even.
|
|
Usage.
|
|
Reading AIFF files:
|
f = aifc.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().
|
In some types of audio files, if the setpos() method is 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 AIFF files)
|
getcompname() -- returns human-readable version of
|
compression type ('not compressed' for AIFF files)
|
getparams() -- returns a tuple consisting of all of the
|
above in the above order
|
getmarkers() -- get the list of marks in the audio file or None
|
if there are no marks
|
getmark(id) -- get mark with the specified id (raises an error
|
if the mark does not exist)
|
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(), the position given to setpos() and
|
the position of marks are all 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 AIFF files:
|
f = aifc.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:
|
aiff() -- create an AIFF file (AIFF-C default)
|
aifc() -- create an AIFF-C file
|
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
|
setmark(id, pos, name)
|
-- add specified mark to the list of marks
|
tell() -- return current position in output file (useful
|
in combination with setmark())
|
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.
|
Marks can be added anytime. If there are any marks, ypu must call
|
close() after all frames have been written.
|
The close() method is called automatically when the class instance
|
is destroyed.
|
|
When a file is opened with the extension '.aiff', an AIFF file is
|
written, otherwise an AIFF-C file is written. This default can be
|
changed by calling aiff() or aifc() before the first writeframes or
|
writeframesraw.
|
iÿÿÿÿNt Errort opent openfpc B s e Z RS( ( t __name__t
|
__module__( ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR s l @Q E c C sB y! t j d | j d d SWn t j k
|
r= t n Xd S( Ns >li i ( t structt unpackt readt errort EOFError( t file( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
_read_long s !c C sB y! t j d | j d d SWn t j k
|
r= t n Xd S( Ns >Li i ( R R R R R ( R
|
( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _read_ulong s !c C sB y! t j d | j d d SWn t j k
|
r= t n Xd S( Ns >hi i ( R R R R R ( R
|
( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _read_short s !c C sB y! t j d | j d d SWn t j k
|
r= t n Xd S( Ns >Hi i ( R R R R R ( R
|
( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _read_ushort¥ s !c C s_ t | j d } | d k r* d } n | j | } | d @d k r[ | j d } n | S( Ni i t ( t ordR ( R
|
t lengtht datat dummy( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _read_string« s gâÿÿÿÿÿïc C s¿ t | } d } | d k r1 d } | d } n t | } t | } | | k ok | k ok d k n ry d } n> | d k r t } n) | d } | d | t d | d
|
} | | S( Ni i iÿÿÿÿi g iÿ iÿ? l g @i? ( R R t _HUGE_VALt pow( t ft expont signt himantt lomant( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _read_float· s '
|
c C s | j t j d | d S( Ns >h( t writeR t pack( R t x( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _write_shortÈ s c C s | j t j d | d S( Ns >H( R R R ( R R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _write_ushortË s c C s | j t j d | d S( Ns >l( R R R ( R R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _write_longÎ s c C s | j t j d | d S( Ns >L( R R R ( R R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _write_ulongÑ s c C s} t | d k r! t d n | j t j d t | | j | t | d @d k ry | j t d n d S( Niÿ s% string exceeds maximum pstring lengtht Bi i ( t lent
|
ValueErrorR R R t chr( R t s( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _write_stringÔ s c C sh d d l } | d k r+ d } | d } n d } | d k rR d } d } d } në | j | \ } } | d k s | d k s | | k r¤ | d B} d } d } n | d } | d k rÕ | j | | } d } n | | B} | j | d } | j | } t | } | j | | d } | j | } t | } t | | t | | t | | d S( Niÿÿÿÿi i i @ i iÿ iþ? i ( t matht frexpt ldexpt floort longR! R# ( R R R* R R R R t fmantt fsmant( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _write_floatÜ s8 $
|
|
|
( t Chunkt Aifc_readc B sÎ 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 RS( c C sT d | _ d | _ d | _ g | _ d | _ | | _ t | } | j d k r` t d n | j
|
d } | d k r d | _ n! | d k r d | _ n t d d | _ xÙ d | _ y t | j } Wn t k
|
rä Pn X| j } | d k r| j | d | _ nj | d
|
k rF| | _ | j
|
d } d | _ n: | d k rdt | | _ n | d k r| j | n | j q´ | j s¡| j rt d n | j rP| j rPd d l } | j d | j | j d | j | j g } | j d k r| j | d <n( | j d k r4| j | d <n t d | j j | n d S( Ni t FORMs file does not start with FORM idi t AIFFt AIFCi s not an AIFF or AIFF-C filet COMMt SSNDi t FVERt MARKs$ COMM chunk and/or SSND chunk missingiÿÿÿÿi s$ cannot compress more than 2 channels( t _versiont Nonet _decompt _convertt _markerst _soundpost _fileR2 t getnameR R t _aifct _comm_chunk_readt _ssnd_seek_neededR t _read_comm_chunkt _ssnd_chunkR t _readmarkt skipt clt ORIGINAL_FORMATt BITS_PER_COMPONENTt
|
_sampwidtht
|
FRAME_RATEt
|
_frameratet
|
_nchannelst MONOt STEREO_INTERLEAVEDt SetParams( t selfR
|
t chunkt formdatat chunknameR RJ t params( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt initfp# s` c C s> t | t d k r- t j | d } n | j | d S( NR t rb( t typet __builtin__R RY ( RT R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt __init__W s c C s | j S( N( RA ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getfp` s c C s d | _ d | _ d S( Ni i ( RE R@ ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt rewindc s c C s3 | j r" | j j d | _ n | j j d S( N( R= t CloseDecompressorR< RA t close( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRa g s c C s | j S( N( R@ ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt tellm s c C s | j S( N( RP ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getnchannelsp s c C s | j S( N( t _nframes( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
getnframess s c C s | j S( N( RM ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getsampwidthv s c C s | j S( N( RO ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getframeratey s c C s | j S( N( t _comptype( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getcomptype| s c C s | j S( N( t _compname( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getcompname s c C s: | j | j | j | j | j | j f S( N( Rc Rf Rg Re Ri Rk ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getparams
s c C s t | j d k r d S| j S( Ni ( R% R? R< ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
getmarkers s c C s< x% | j D] } | | d k r
|
| Sq
|
Wt d | f d S( Ni s marker %r does not exist( R? R ( RT t idt marker( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt getmark s c C s= | d k s | | j k r' t d n | | _ d | _ d S( Ni s position not in rangei ( Rd R R@ RE ( RT t pos( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt setpos s c C sÖ | j rd | j j d | j j d } | j | j } | rX | j j | d n d | _ n | d k rt d S| j j | | j } | j r® | r® | j | } n | j t | | j | j | _ | S( Ni i R (
|
RE RG t seekR R@ t
|
_framesizeR> R% RP RM ( RT t nframesR Rq R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
readframes s $c C sN d d l } | j j | j t | d } | j j t | | j | S( Niÿÿÿÿi ( RJ R= t SetParamt FRAME_BUFFER_SIZER% t
|
DecompressRP ( RT R RJ R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _decomp_data¯ s
|
c C s d d l } | j | d S( Niÿÿÿÿi ( t audioopt ulaw2lin( RT R R{ ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _ulaw2lin¶ s c C sL d d l } t | d s' d | _ n | j | d | j \ } | _ | S( Niÿÿÿÿt _adpcmstatei ( R{ t hasattrR< R~ t adpcm2lin( RT R R{ ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
_adpcm2linº s c C s t | | _ t | | _ t | d d | _ t t | | _ | j | j | _ | j rd } | j
|
d k r d } d GHd | _
|
n | j d | _ | rt | j j d } | d @d k rß | d } n | j
|
| | _
|
| j j d d n t | | _ | j d
|
k r| j d k ryy d d l } Wn t k
|
rUqyX| j | _ | j d | _ d Sn y d d l } Wnp t k
|
rû| j d k rïy0 d d l } | j | _ | j d | _ d SWqït k
|
rëqïXn t d n X| j d k r'| j } | j d | _ n4 | j d k rR| j } | j d | _ n t d | j | | _ | j | _ qn d
|
| _ d | _ d S( Ni i i i i s Warning: bad COMM chunk sizei i iÿÿÿÿt NONEt G722t ULAWi s# cannot read compressed AIFF-C filest ALAWs unsupported compression types not compressed( R RP R Rd RM t intR RO Rt RC t chunksizeR Rh R R
|
Rs R Rj R{ t ImportErrorR R> RJ R} R t G711_ULAWt G711_ALAWt OpenDecompressorR= Rz ( RT RU t kludgeR R{ RJ t scheme( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRF Ã sf c C sÅ t | } yg x` t | D]R } t | } t | } t | } | sR | r | j j | | | f q q WWnK t k
|
rÀ d Gt | j Gt | j d k r° d Gn d Gd G| GHn Xd S( Ns! Warning: MARK chunk contains onlyi Ro t markerss
|
instead of( R t rangeR R R? t appendR R% ( RT RU t nmarkerst iRn Rq t name( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRH s $ ( R R RY R] R^ R_ Ra Rb Rc Re Rf Rg Ri Rk Rl Rm Rp Rr Rv Rz R} R RF RH ( ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR3 ÿ s, $ 4 =t
|
Aifc_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 d Z d Z d Z d Z d Z! d Z" d! Z# RS(" c C so t | t d k r3 | } t j | d } n d } | j | | d d k rb d | _ n d | _ d S( NR t wbs ???iûÿÿÿs .aiffi i ( R[ R\ R RY RC ( RT R t filename( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR] 3 s c C s | | _ t | _ d | _ d | _ d | _ d | _ d | _ d | _ d | _
|
d | _ d | _ d | _ d | _ g | _ d | _ d | _ d S( NR s not compressedi i ( RA t _AIFC_versionR; Rh Rj R< t _compR> RP RM RO Rd t _nframeswrittent _datawrittent _datalengthR? t _marklengthRC ( RT R
|
( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRY @ s c C s | j r | j n d S( N( RA Ra ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt __del__R s c C s" | j r t d n d | _ d S( Ns0 cannot change parameters after starting to writei ( R R RC ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt aiffY s c C s" | j r t d n d | _ d S( Ns0 cannot change parameters after starting to writei ( R R RC ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt aifc^ 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( R R RP ( RT t nchannels( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt setnchannelsc s
|
c C s | j s t d n | j S( Ns number of channels not set( RP R ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRc j 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( R R RM ( RT t sampwidth( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt setsampwidtho s
|
c C s | j s t d n | j S( Ns sample width not set( RM R ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRf v 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( R R RO ( RT t framerate( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt setframerate{ s
|
c C s | j s t d n | j S( Ns frame rate not set( RO R ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRg s c C s" | j r t d n | | _ d S( Ns0 cannot change parameters after starting to write( R R Rd ( RT Ru ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
setnframes s c C s | j S( N( R ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRe s c C sC | j r t d n | d k r- t d n | | _ | | _ d S( Ns0 cannot change parameters after starting to writeR R R
R s unsupported compression type( s NONEs ULAWs ALAWs G722( R R Rh Rj ( RT t comptypet compname( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt setcomptype s c C s | j S( N( Rh ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRi s c C s | j S( N( Rj ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRk s c C s | \ } } } } } } | j r- t d n | d k rE t d n | j | | j | | j | | j | | j | | d S( Ns0 cannot change parameters after starting to writeR R R
R s unsupported compression type( s NONEs ULAWs ALAWs G722( R R R¡ R£ R¥ R¦ R© ( RT t infoR R¢ R¤ Ru R§ R¨ ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.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( RP RM RO R Rd Rh Rj ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRl ® s c C s | d k r t d n | d k r0 t d n t | t d k rT t d n xN t t | j D]7 } | | j | d k rj | | | f | j | <d Sqj W| j j | | | f d S( Ni s marker ID must be > 0s marker position must be >= 0R s marker name must be a string( R R[ R R% R? R ( RT Rn Rq R R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt setmark´ s c C s< x% | j D] } | | d k r
|
| Sq
|
Wt d | f d S( Ni s marker %r does not exist( R? R ( RT Rn Ro ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRp Á s c C s t | j d k r d S| j S( Ni ( R% R? R< ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRm Ç s c C s | j S( N( R ( RT ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRb Ì s c C s | j t | t | | j | j } | j rH | j | } n | j j | | j | | _ | j t | | _ d S( N( t _ensure_header_writtenR% RM RP R> RA R R R ( RT R Ru ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt writeframesrawÏ s c C sB | j | | j | j k s1 | j | j k r> | j n d S( N( R® R Rd R R t _patchheader( RT R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt writeframesØ s c C sí | j d k r d Sz | j d | j d @rY | j j t d | j d | _ n | j | j | j k s | j | j k s | j
|
r | j n | j r¿ | j j d | _ n Wd d | _ | j } d | _ | j Xd S( Ni i ( RA R< R R R R' t _writemarkersR Rd R R R¯ R t CloseCompressorR> Ra ( RT R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRa Þ s&
|
c C s^ d d l } | j j | j t | } | j j | j t | } | j j | j | S( Niÿÿÿÿ( RJ R Rw Rx R% t COMPRESSED_BUFFER_SIZEt CompressRd ( RT R RJ R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
_comp_dataú s c C s d d l } | j | d S( Niÿÿÿÿi ( R{ t lin2ulaw( RT R R{ ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _lin2ulaw s c C sL d d l } t | d s' d | _ n | j | d | j \ } | _ | S( NiÿÿÿÿR~ i ( R{ R R< R~ t lin2adpcm( RT R R{ ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt
|
_lin2adpcm s c C sà | j sÜ | j d
|
k rK | j s- d | _ n | j d k rK t d qK n | j d k r | j so d | _ n | j d k r t d q n | j s¢ t d n | j s· t d n | j sÌ t d n | j | n d S( NR R
i s9 sample width must be 2 when compressing with ULAW or ALAWR s: sample width must be 2 when compressing with G7.22 (ADPCM)s # channels not specifieds sample width not specifieds sampling rate not specified( s ULAWs ALAW( R Rh RM R RP RO t _write_header( RT t datasize( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR s$ c
|
C s | j d k r | j | _ d Sy d d l } Wn` t k
|
r | j d k r
y d d l } | j | _ d SWq
t k
|
r q
Xn t d n X| j d k r | j } n$ | j d k rÈ | j } n t d | j
|
| | _ | j d | j | j d | j | j | j d | j d g
|
} | j d
|
k r?| j | d
|
<n( | j d k r^| j | d
|
<n t d | j j | | j j d d } | j | _ d S( NR iÿÿÿÿR s$ cannot write compressed AIFF-C filesR
s unsupported compression typei i id i i s$ cannot compress more than 2 channelsR ( Rh R¹ R> RJ R R{ R· R R R t OpenCompressorR RK RL RM RN RO Rx R³ RP RQ RR RS R´ Rµ ( RT RJ R{ R RX R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt _init_compression sB c C sº | j r% | j d k r% | j n | j j d | j sX | | j | j | _ n | j | j | j | _ | j d @r | j d | _ n | j r&| j d k rÝ | j d | _ | j d @r#| j d | _ q#q&| j d k r&| j d d | _ | j d @r#| j d | _ q#q&n | j j | _
|
| j | j } | j r| j j d
|
| j j d t | j d t | j | j n | j j d | j j d t | j | t | j | j | j j | _ t | j | j t | j | j d t | j | j | j r]| j j | j t | j | j n | j j d | j j | _ t | j | j d t | j d t | j d d S( NR R4 i R R
i R i i R6 R9 R5 R7 i R8 i ( s ULAWs ALAW( RC Rh R½ RA R Rd RP RM R Rb t _form_length_post _write_form_lengthR# R; R t _nframes_posR1 RO R) Rj t _ssnd_length_pos( RT t
|
initlengtht
|
commlength( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyRº F sP c C sw | j r< d t | j } | d @r3 | d } n d } n d } d } t | j d | | j d | d | | S(
|
Ni i i i i i i i i ( RC R% Rj R# RA R ( RT t
|
datalengthRÃ t
|
verslength( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR¿ q s
|
"c C s6 | j j } | j d @rB | j d } | j j t d n | j } | | j k r | j | j k r | j d k r | j j | d d S| j j | j
|
d | j | } | j j | j d t | j | j | j j | j d t | j | d | j j | d | j | _ | | _ d S( Ni i i ( RA Rb R R R' R Rd R R Rs R¾ R¿ RÀ R# RÁ ( RT t curposRÄ R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR¯ ~ s& c C s t | j d k r d S| j j d d } x[ | j D]P } | \ } } } | t | d d } t | d @d k r9 | d } q9 q9 Wt | j | | d | _ t | j t | j xP | j D]E } | \ } } } t | j | t | j | t | j | qÍ Wd S( Ni R: i i i i ( R% R? RA R R# R R R) ( RT R Ro Rn Rq R ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR± s" ($ R R R] RY R R R R¡ Rc R£ Rf R¥ Rg R¦ Re R© Ri Rk R« Rl R¬ Rp Rm Rb R® R° Ra Rµ R· R¹ R R½ Rº R¿ R¯ R± ( ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR sD & + 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 modeRZ t rt wR s$ mode must be 'r', 'rb', 'w', or 'wb'( RÈ s rb( RÉ s wb( R< R RÇ R3 R R ( R RÇ ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyR § s
|
|
t __main__i s /usr/demos/data/audio/bach.aiffRÈ t Readings nchannels =s nframes =s sampwidth =s framerate =s comptype =s compname =i t WritingRÉ i s Done.(/ t __doc__R R\ t __all__t ExceptionR R R R R R R R R R R! R" R# R) R1 RU R2 R3 R R< R R R t syst argvR t fnR Rc Re Rf Rg Ri Rk t gnt gR« Rl Rv R R° Ra ( ( ( sL /tmp/ndk-User/buildhost/install/prebuilt/darwin-x86_64/lib/python2.7/aifc.pyt <module> sf
|
!ÿ ÿ
|
|
|
