"""Convert "arbitrary" sound files to AIFF (Apple and SGI's audio format).

[0] Fix | Delete

[1] Fix | Delete

Input may be compressed.

[2] Fix | Delete

Uncompressed file type may be AIFF, WAV, VOC, 8SVX, NeXT/Sun, and others.

[3] Fix | Delete

An exception is raised if the file is not of a recognized type.

[4] Fix | Delete

Returned filename is either the input filename or a temporary filename;

[5] Fix | Delete

in the latter case the caller must ensure that it is removed.

[6] Fix | Delete

Other temporary files used are removed by the function.

[7] Fix | Delete

"""

[8] Fix | Delete

from warnings import warnpy3k

[9] Fix | Delete

warnpy3k("the toaiff module has been removed in Python 3.0", stacklevel=2)

[10] Fix | Delete

del warnpy3k

[11] Fix | Delete

[12] Fix | Delete

import os

[13] Fix | Delete

import tempfile

[14] Fix | Delete

import pipes

[15] Fix | Delete

import sndhdr

[16] Fix | Delete

[17] Fix | Delete

__all__ = ["error", "toaiff"]

[18] Fix | Delete

[19] Fix | Delete

table = {}

[20] Fix | Delete

[21] Fix | Delete

t = pipes.Template()

[22] Fix | Delete

t.append('sox -t au - -t aiff -r 8000 -', '--')

[23] Fix | Delete

table['au'] = t

[24] Fix | Delete

[25] Fix | Delete

# XXX The following is actually sub-optimal.

[26] Fix | Delete

# XXX The HCOM sampling rate can be 22k, 22k/2, 22k/3 or 22k/4.

[27] Fix | Delete

# XXX We must force the output sampling rate else the SGI won't play

[28] Fix | Delete

# XXX files sampled at 5.5k or 7.333k; however this means that files

[29] Fix | Delete

# XXX sampled at 11k are unnecessarily expanded.

[30] Fix | Delete

# XXX Similar comments apply to some other file types.

[31] Fix | Delete

t = pipes.Template()

[32] Fix | Delete

t.append('sox -t hcom - -t aiff -r 22050 -', '--')

[33] Fix | Delete

table['hcom'] = t

[34] Fix | Delete

[35] Fix | Delete

t = pipes.Template()

[36] Fix | Delete

t.append('sox -t voc - -t aiff -r 11025 -', '--')

[37] Fix | Delete

table['voc'] = t

[38] Fix | Delete

[39] Fix | Delete

t = pipes.Template()

[40] Fix | Delete

t.append('sox -t wav - -t aiff -', '--')

[41] Fix | Delete

table['wav'] = t

[42] Fix | Delete

[43] Fix | Delete

t = pipes.Template()

[44] Fix | Delete

t.append('sox -t 8svx - -t aiff -r 16000 -', '--')

[45] Fix | Delete

table['8svx'] = t

[46] Fix | Delete

[47] Fix | Delete

t = pipes.Template()

[48] Fix | Delete

t.append('sox -t sndt - -t aiff -r 16000 -', '--')

[49] Fix | Delete

table['sndt'] = t

[50] Fix | Delete

[51] Fix | Delete

t = pipes.Template()

[52] Fix | Delete

t.append('sox -t sndr - -t aiff -r 16000 -', '--')

[53] Fix | Delete

table['sndr'] = t

[54] Fix | Delete

[55] Fix | Delete

uncompress = pipes.Template()

[56] Fix | Delete

uncompress.append('uncompress', '--')

[57] Fix | Delete

[58] Fix | Delete

[59] Fix | Delete

class error(Exception):

[60] Fix | Delete

pass

[61] Fix | Delete

[62] Fix | Delete

def toaiff(filename):

[63] Fix | Delete

temps = []

[64] Fix | Delete

ret = None

[65] Fix | Delete

try:

[66] Fix | Delete

ret = _toaiff(filename, temps)

[67] Fix | Delete

finally:

[68] Fix | Delete

for temp in temps[:]:

[69] Fix | Delete

if temp != ret:

[70] Fix | Delete

try:

[71] Fix | Delete

os.unlink(temp)

[72] Fix | Delete

except os.error:

[73] Fix | Delete

pass

[74] Fix | Delete

temps.remove(temp)

[75] Fix | Delete

return ret

[76] Fix | Delete

[77] Fix | Delete

def _toaiff(filename, temps):

[78] Fix | Delete

if filename[-2:] == '.Z':

[79] Fix | Delete

(fd, fname) = tempfile.mkstemp()

[80] Fix | Delete

os.close(fd)

[81] Fix | Delete

temps.append(fname)

[82] Fix | Delete

sts = uncompress.copy(filename, fname)

[83] Fix | Delete

if sts:

[84] Fix | Delete

raise error, filename + ': uncompress failed'

[85] Fix | Delete

else:

[86] Fix | Delete

fname = filename

[87] Fix | Delete

try:

[88] Fix | Delete

ftype = sndhdr.whathdr(fname)

[89] Fix | Delete

if ftype:

[90] Fix | Delete

ftype = ftype[0] # All we're interested in

[91] Fix | Delete

except IOError, msg:

[92] Fix | Delete

if type(msg) == type(()) and len(msg) == 2 and \

[93] Fix | Delete

type(msg[0]) == type(0) and type(msg[1]) == type(''):

[94] Fix | Delete

msg = msg[1]

[95] Fix | Delete

if type(msg) != type(''):

[96] Fix | Delete

msg = repr(msg)

[97] Fix | Delete

raise error, filename + ': ' + msg

[98] Fix | Delete

if ftype == 'aiff':

[99] Fix | Delete

return fname

[100] Fix | Delete

if ftype is None or not ftype in table:

[101] Fix | Delete

raise error, '%s: unsupported audio file type %r' % (filename, ftype)

[102] Fix | Delete

(fd, temp) = tempfile.mkstemp()

[103] Fix | Delete

os.close(fd)

[104] Fix | Delete

temps.append(temp)

[105] Fix | Delete

sts = table[ftype].copy(fname, temp)

[106] Fix | Delete

if sts:

[107] Fix | Delete

raise error, filename + ': conversion to aiff failed'

[108] Fix | Delete

return temp

[109] Fix | Delete

[110] Fix | Delete