a
XC?h] @ s^ d dl Z d dlZd dlZddgZG dd deZdZdd Zdd Zd
d Z d d
Z
dd Z dZ dd Z
dd Zdd Zdd Zdd Zdd Zd d Zd d lmZ d d lmZ ed!d"Zd#ej_d$ej_d%ej _d&ej _d'ej _d(ej _G d)d* d*Z G d+d, d,Z!d>d-dZ"e#d.krZd dl$Z$e$j%d/d s>e$j%&d0 e$j%d/ Z'e"e'd1Z(e)d2e' e)d3e(* e)d4e(+ e)d5e(, e)d6e(- e)d7e(. e)d8e(/ e$j%d9d r:e$j%d9 Z0e)d:e0 e"e0d;@Z1e12e(3 e(4d<Z5e5sqe16e5 qW d n1 s(0 Y e)d= W d n1 sP0 Y dS )? NErroropenc @ s e Zd ZdS )r N)__name__
__module__ __qualname__ r r )/opt/alt/python39/lib64/python3.9/aifc.pyr s l @Q E c C s8 zt d| dd W S t jy2 td Y n0 d S )N>l r structZunpackreaderrorEOFErrorfiler r r
_read_long s r c C s8 zt d| dd W S t jy2 td Y n0 d S )N>Lr
r r r r r r _read_ulong s r c C s8 zt d| dd W S t jy2 td Y n0 d S )N>h r r r r r r _read_short s r c C s8 zt d| dd W S t jy2 td Y n0 d S )N>Hr r r r r r r _read_ushort s r c C s@ t | d}|dkr d}n
| |}|d@ dkr<| d}|S )N r )ordr
)r lengthdatadummyr r r _read_string s
r gc C s t | }d}|dk r d}|d }t| }t| }|| krN| krNdkrXn nd} n0|dkrft} n"|d }|d | td |d
} || S ) Nr r g i? l g @? )r r _HUGE_VALpow)fexponsignhimantlomantr r r _read_float s "r, c C s | td| d S )Nr writer packr' xr r r _write_short s r2 c C s | td| d S )Nr r- r0 r r r
_write_ushort s r3 c C s | td| d S )Nr r- r0 r r r _write_long s r4 c C s | td| d S )Nr r- r0 r r r _write_ulong s r5 c C sR t |dkrtd| tdt | | | t |d@ dkrN| d d S )N z%string exceeds maximum pstring lengthBr r )len
ValueErrorr. r r/ )r' sr r r
_write_string s
r< c C s dd l }|dk r d}|d }nd}|dkr8d}d}d}n||\}}|dks^|dks^||krp|dB }d}d}nh|d }|dk r|||}d}||B }||d}||}t|}||| d}||}t|}t| | t| | t| | d S ) Nr r" r! i @ r r# i? )mathZfrexpZldexpZfloorintr3 r5 ) r' r1 r> r) r( r* r+ ZfmantZfsmantr r r _write_float s8
r@ )Chunk)
namedtuple _aifc_paramsz7nchannels sampwidth framerate nframes comptype compnamez3Number of audio channels (1 for mono, 2 for stereo)zSample width in byteszSampling frequencyzNumber of audio framesz(Compression type ("NONE" for AIFF files)zRA human-readable version of the compression type
('not compressed' for AIFF files)c @ s e Zd ZdZdd Zdd Zdd Zdd Zd
d Zd d
Z dd Z
dd Z dd Z dd Z
dd Zdd Zdd Zd d Zd d Zd d! Zd"d# Zd$d% Zd&d' Zd(d) Zd*d+ Zd,d- Zd.d/ Zd0d1 ZdS )2 Aifc_readNc C s6 d| _ d | _g | _d| _|| _t|}| dkr:td|d}|dkrTd| _ n|dkrdd| _ ntdd| _
d | _ d| _ zt| j}W n t
y Y qY n0 | }|d kr| | d| _
nH|d
kr|| _ |d }d| _ n(|d krt|| _ n|d
kr| | | qx| j
r*| j s2tdd S )Nr FORMz file does not start with FORM idr
AIFF AIFCr znot an AIFF or AIFF-C file COMM SSND FVER MARKz$COMM chunk and/or SSND chunk missing)_version_convert_markers _soundpos_filerA Zgetnamer r
_aifcZ_comm_chunk_read _ssnd_chunk_ssnd_seek_neededr _read_comm_chunkr _readmarkskip)selfr chunkZformdataZ chunknamer r r r initfp4 sH
zAifc_read.initfpc C sL t |tr>t|d}z| | W qH | Y qH0 n
| | d S )Nrb)
isinstancestrbuiltinsr rZ closerX r' Z file_objectr r r __init__\ s
zAifc_read.__init__c C s | S Nr rX r r r __enter__h s zAifc_read.__enter__c G s | d S rb r_ rX argsr r r __exit__k s zAifc_read.__exit__c C s | j S rb )rQ rc r r r getfpq s zAifc_read.getfpc C s d| _ d| _d S )Nr r )rT rP rc r r r rewindt s zAifc_read.rewindc C s | j }|d ur d | _ | d S rb )rQ r_ rX r r r r r_ x s zAifc_read.closec C s | j S rb )rP rc r r r tell~ s zAifc_read.tellc C s | j S rb )
_nchannelsrc r r r getnchannels s zAifc_read.getnchannelsc C s | j S rb )_nframesrc r r r
getnframes s zAifc_read.getnframesc C s | j S rb )
_sampwidthrc r r r getsampwidth s zAifc_read.getsampwidthc C s | j S rb )
_frameraterc r r r getframerate s zAifc_read.getframeratec C s | j S rb _comptyperc r r r getcomptype s zAifc_read.getcomptypec C s | j S rb _compnamerc r r r getcompname s zAifc_read.getcompnamec C s* t | | | | | | S rb )rC rn rr rt rp rw rz rc r r r getparams s zAifc_read.getparamsc C s t | jdkrd S | jS Nr r9 rO rc r r r
getmarkers s zAifc_read.getmarkersc C s2 | j D ]}||d kr| S qtd|d S Nr zmarker {0!r} does not existrO r formatrX idmarkerr r r getmark s
zAifc_read.getmarkc C s* |dk s|| j krtd|| _d| _d S )Nr zposition not in ranger )ro r rP rT )rX posr r r setpos s zAifc_read.setposc C s | j rD| jd | jd}| j| j }|r>| j|d d| _ |dkrPdS | j|| j }| jrv|rv| |}| jt|| j| j | _|S )Nr rJ r )
rT rS seekr
rP
_framesizerN r9 rm rq )rX nframesr r r r r r
readframes s
zAifc_read.readframesc C s dd l }||dS Nr r )audioopZalaw2linrX r r r r r _alaw2lin s zAifc_read._alaw2linc C s dd l }||dS r )r Zulaw2linr r r r _ulaw2lin s zAifc_read._ulaw2linc C s2 dd l }t| dsd | _||d| j\}| _|S Nr _adpcmstater )r hasattrr Z adpcm2linr r r r
_adpcm2lin s
zAifc_read._adpcm2linc C sV t || _t|| _t |d d | _tt|| _| jdkrFtd| jdkrXtd| j| j | _ | j
rFd}|j dkrd}t
d d |_ |d
| _|rt|jd}|d@ dkr|d }|j | |_ |jd d t|| _| jd krR| jd
kr
| j| _n4| jdv r | j| _n | jdv r6| j| _ntdd| _n d | _d| _d S )N rJ r bad sample widthbad # of channels r z Warning: bad COMM chunk size r
r! NONE G722 ulaw ULAW alaw ALAW unsupported compression typer not compressed)r rm r ro rq r? r, rs r r rR Z chunksizewarningswarnr
rv r r r r ry r rN r r )rX rY Zkludger r r r rU sD
zAifc_read._read_comm_chunkc C s t |}zDt|D ]6}t |}t|}t|}|s6|r| j|||f qW nB ty dt| jt| jdkrvdnd|f }t | Y n0 d S )Nz;Warning: MARK chunk contains only %s marker%s instead of %sr r; )
r ranger r rO appendr r9 r r )rX rY Znmarkersir r namewr r r rV s zAifc_read._readmark) r r r rQ rZ ra rd rh ri rj r_ rl rn rp rr rt rw rz r{ r~ r r r r r r rU rV r r r r rD s2 $( *rD c @ s0 e Zd ZdZdd Zdd Zdd Zdd Zd
d Zd d
Z dd Z
dd Z dd Z dd Z
dd Zdd Zdd Zd d Zd d Zd d! Zd"d# Zd$d% Zd&d' Zd(d) Zd*d+ Zd,d- Zd.d/ Zd0d1 Zd2d3 Z d4d5 Z d6d7 Z d8d9 Z d:d; Z dd? Z"d@dA Z#dBdC Z$dDdE Z%dFdG Z&dHdI Z'dS )J
Aifc_writeNc C s\ t |trNt|d}z| | W n | Y n0 |drXd| _n
| | d S )Nwbz.aiffr )r\ r] r^ r rZ r_ endswithrR r` r r r ra / s
zAifc_write.__init__c C s^ || _ t| _d| _d| _d | _d| _d| _d| _d| _ d| _
d| _ d| _ g | _
d| _d| _d S )Nr r r r )rQ
_AIFC_versionrM rv ry rN rm rq rs ro _nframeswritten _datawritten _datalengthrO _marklengthrR rk r r r rZ ? s zAifc_write.initfpc C s | d S rb re rc r r r __del__P s zAifc_write.__del__c C s | S rb r rc r r r rd S s zAifc_write.__enter__c G s | d S rb re rf r r r rh V s zAifc_write.__exit__c C s | j rtdd| _d S )N0cannot change parameters after starting to writer r r rR rc r r r aiff\ s zAifc_write.aiffc C s | j rtdd| _d S )Nr r r rc r r r aifca s zAifc_write.aifcc C s( | j rtd|dk r td|| _d S )Nr r r )r r rm )rX nchannelsr r r setnchannelsf s
zAifc_write.setnchannelsc C s | j std| j S )Nznumber of channels not set)rm r rc r r r rn m s zAifc_write.getnchannelsc C s0 | j rtd|dk s |dkr&td|| _d S )Nr r r
r )r r rq )rX sampwidthr r r setsampwidthr s
zAifc_write.setsampwidthc C s | j std| j S )Nzsample width not set)rq r rc r r r rr y s zAifc_write.getsampwidthc C s( | j rtd|dkr td|| _d S )Nr r zbad frame rate)r r rs )rX framerater r r setframerate~ s
zAifc_write.setframeratec C s | j std| j S )Nzframe rate not set)rs r rc r r r rt s zAifc_write.getframeratec C s | j rtd|| _d S )Nr )r r ro )rX r r r r
setnframes s zAifc_write.setnframesc C s | j S rb r rc r r r rp s zAifc_write.getnframesc C s. | j rtd|dvr td|| _|| _d S Nr )r r r r r r r )r r rv ry )rX comptypecompnamer r r setcomptype s zAifc_write.setcomptypec C s | j S rb ru rc r r r rw s zAifc_write.getcomptypec C s | j S rb rx rc r r r rz s zAifc_write.getcompnamec C sf |\}}}}}}| j r td|dvr.td| | | | | | | | | || d S r )r r r r r r r )rX paramsr r r r r r r r r setparams s
zAifc_write.setparamsc C s8 | j r| jr| jstdt| j | j| j| j| j| jS )Nznot all parameters set)rm rq rs r rC ro rv ry rc r r r r{ s
zAifc_write.getparamsc C s |dkrt d|dk r t dt|ts2t dtt| jD ],}|| j| d kr@|||f| j|< d S q@| j|||f d S )Nr zmarker ID must be > 0z marker position must be >= 0zmarker name must be bytes)r r\ bytesr r9 rO r )rX r r r r r r r setmark s
zAifc_write.setmarkc C s2 | j D ]}||d kr| S qtd|d S r r r r r r r s
zAifc_write.getmarkc C s t | jdkrd S | jS r| r} rc r r r r~ s zAifc_write.getmarkersc C s | j S rb r rc r r r rl s zAifc_write.tellc C sz t |ttfs t|d}| t| t|| j| j }| j rN| |}| j
| | j | | _ | j
t| | _
d S )Nr7 )r\ r bytearray
memoryviewcast_ensure_header_writtenr9 rq rm rN rQ r. r r )rX r r r r r writeframesraw s
zAifc_write.writeframesrawc C s. | | | j| jks"| j| jkr*| d S rb )r r ro r r _patchheader)rX r r r r writeframes s
zAifc_write.writeframesc C s | j d u rd S zx| d | jd@ r<| j d | jd | _| | j| jksb| j| jksb| jrj| W d | _
| j }d | _ | n d | _
| j }d | _ | 0 d S )Nr r r8 ) rQ r r r.
_writemarkersr ro r r r rN r_ )rX r' r r r r_ s,
zAifc_write.closec C s dd l }||dS r )r Zlin2alawr r r r _lin2alaw s zAifc_write._lin2alawc C s dd l }||dS r )r Zlin2ulawr r r r _lin2ulaw s zAifc_write._lin2ulawc C s2 dd l }t| dsd | _||d| j\}| _|S r )r r r Z lin2adpcmr r r r
_lin2adpcm s
zAifc_write._lin2adpcmc C sf | j sb| jdv r.| js d| _| jdkr.td| js | j dkr| j| _n&| j dv r(| j| _n| j dv r:| j| _d S )Nr r r )rv r rN r r rc r r r _init_compression s
z Aifc_write._init_compressionc C sH | j r| jdkr| | jd | js<|| j| j | _| j| j | j | _| jd@ rf| jd | _| j r| jdv r| jd | _| jd@ r| jd | _n0| jdkr| jd d | _| jd@ r| jd | _z| j | _
W n t t fy d | _
Y n0 |
| j}| j r@| jd | jd
t| jd t| j| j n | jd | jd t| j| t| j| j | j
d ur| j | _t| j| j | jd
v rt| jd nt| j| jd t| j| j | j r| j| j t| j| j | jd | j
d ur| j | _t| j| jd t| jd t| jd d S )Nr rE r )r r r r r r r
rG rK rF rH r rJ rI r )rR rv r rQ r. ro rm rq r rl _form_length_posAttributeErrorOSError_write_form_lengthr5 rM r2 _nframes_posr@ rs r< ry _ssnd_length_pos)rX Z
initlength
commlengthr r r r % s^
zAifc_write._write_headerc C s\ | j r*dt| j }|d@ r$|d }d}nd}d}t| jd| | j d | d | |S ) Nr r r r r
rJ )rR r9 ry r5 rQ r )rX
datalengthr Z
verslengthr r r r X s" z Aifc_write._write_form_lengthc C s | j }| jd@ r,| jd }| j d n| j}|| jkrd| j| jkrd| jdkrd| j |d d S | j | j d |
|}| j | j d t | j | j | j | j
d t | j |d | j |d | j| _|| _d S )Nr r8 r rJ )rQ rl r r. r ro r r r r r r r5 r )rX Zcurposr r r r r r e s*
zAifc_write._patchheaderc C s t | jdkrd S | jd d}| jD ]:}|\}}}|t | d d }t |d@ dkr(|d }q(t| j| |d | _t| jt | j | jD ]2}|\}}}t| j| t| j| t| j| qd S )Nr rL r r rJ )r9 rO rQ r. r5 r r2 r< )rX r r r r r r r r r { s"
zAifc_write._writemarkers)(r r r rQ ra rZ r rd rh r r r rn r rr r rt r rp r rw rz r r{ r r r~ rl r r r_ r r r r r r r r r r r r r r sJ
3
r c C sJ |d u r t | dr| j}nd}|dv r.t| S |dv r>t| S tdd S )Nmoder[ )rr[ )r r z$mode must be 'r', 'rb', 'w', or 'wb')r r rD r r )r' r r r r r s
__main__r z /usr/demos/data/audio/bach.aiffr ZReadingz nchannels =z nframes =z sampwidth =z framerate =z comptype =z compname =r ZWritingr i zDone.)N)7r r^ r __all__ Exceptionr r r r r r r r% r, r2 r3 r4 r5 r< r@ rY rA collectionsrB rC r __doc__r r r r r rD r r r sysargvr fnr' printrn rp rr rt rw rz Zgngr r{ r r r r r r r sx
!
.