from test import test_support

test_support.requires('audio')

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

import errno

import fcntl

import linuxaudiodev

import os

import sys

import select

import sunaudio

import time

import audioop

SND_FORMAT_MULAW_8 = 1

def play_sound_file(path):

    fp = open(path, 'r')

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

    data = fp.read()

    fp.close()

    if enc != SND_FORMAT_MULAW_8:

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

        return

    try:

        a = linuxaudiodev.open('w')

    except linuxaudiodev.error, msg:

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

            raise TestSkipped, msg

        raise TestFailed, msg

    # convert the data to 16-bit signed

    data = audioop.ulaw2lin(data, 2)

    # set the data format

    if sys.byteorder == 'little':

        fmt = linuxaudiodev.AFMT_S16_LE

    else:

        fmt = linuxaudiodev.AFMT_S16_BE

    # at least check that these methods can be invoked

    a.bufsize()

    a.obufcount()

    a.obuffree()

    a.getptr()

    a.fileno()

    # set parameters based on .au file headers

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

    a.write(data)

    a.flush()

    a.close()

def test_errors():

    a = linuxaudiodev.open("w")

    size = 8

    fmt = linuxaudiodev.AFMT_U8

    rate = 8000

    nchannels = 1

    try:

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

    except ValueError, msg:

        print msg

    try:

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

    except ValueError, msg:

        print msg

    try:

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

    except ValueError, msg:

        print msg

    try:

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

    except ValueError, msg:

        print msg

    try:

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

    except ValueError, msg:

        print msg

    try:

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

    except ValueError, msg:

        print msg

def test():

    play_sound_file(findfile('audiotest.au'))

    test_errors()

test()