1 from test import test_support

     2 test_support.requires('audio')

     3 

     4 from test.test_support import verbose, findfile, TestFailed, TestSkipped

     5 

     6 import errno

     7 import fcntl

     8 import linuxaudiodev

     9 import os

    10 import sys

    11 import select

    12 import sunaudio

    13 import time

    14 import audioop

    15 

    16 SND_FORMAT_MULAW_8 = 1

    17 

    18 def play_sound_file(path):

    19     fp = open(path, 'r')

    20     size, enc, rate, nchannels, extra = sunaudio.gethdr(fp)

    21     data = fp.read()

    22     fp.close()

    23 

    24     if enc != SND_FORMAT_MULAW_8:

    25         print "Expect .au file with 8-bit mu-law samples"

    26         return

    27 

    28     try:

    29         a = linuxaudiodev.open('w')

    30     except linuxaudiodev.error, msg:

    31         if msg[0] in (errno.EACCES, errno.ENOENT, errno.ENODEV, errno.EBUSY):

    32             raise TestSkipped, msg

    33         raise TestFailed, msg

    34 

    35     # convert the data to 16-bit signed

    36     data = audioop.ulaw2lin(data, 2)

    37 

    38     # set the data format

    39     if sys.byteorder == 'little':

    40         fmt = linuxaudiodev.AFMT_S16_LE

    41     else:

    42         fmt = linuxaudiodev.AFMT_S16_BE

    43 

    44     # at least check that these methods can be invoked

    45     a.bufsize()

    46     a.obufcount()

    47     a.obuffree()

    48     a.getptr()

    49     a.fileno()

    50 

    51     # set parameters based on .au file headers

    52     a.setparameters(rate, 16, nchannels, fmt)

    53     a.write(data)

    54     a.flush()

    55     a.close()

    56 

    57 def test_errors():

    58     a = linuxaudiodev.open("w")

    59     size = 8

    60     fmt = linuxaudiodev.AFMT_U8

    61     rate = 8000

    62     nchannels = 1

    63     try:

    64         a.setparameters(-1, size, nchannels, fmt)

    65     except ValueError, msg:

    66         print msg

    67     try:

    68         a.setparameters(rate, -2, nchannels, fmt)

    69     except ValueError, msg:

    70         print msg

    71     try:

    72         a.setparameters(rate, size, 3, fmt)

    73     except ValueError, msg:

    74         print msg

    75     try:

    76         a.setparameters(rate, size, nchannels, 177)

    77     except ValueError, msg:

    78         print msg

    79     try:

    80         a.setparameters(rate, size, nchannels, linuxaudiodev.AFMT_U16_LE)

    81     except ValueError, msg:

    82         print msg

    83     try:

    84         a.setparameters(rate, 16, nchannels, fmt)

    85     except ValueError, msg:

    86         print msg

    87 

    88 def test():

    89     play_sound_file(findfile('audiotest.au'))

    90     test_errors()

    91 

    92 test()