############################################################################
#
#  Program: GDCM (Grassroots DICOM). A DICOM library
#
#  Copyright (c) 2006-2011 Mathieu Malaterre
#  All rights reserved.
#  See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
#
#     This software is distributed WITHOUT ANY WARRANTY; without even
#     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
#     PURPOSE.  See the above copyright notice for more information.
#
############################################################################

"""
Usage:

 python PlaySound.py input.dcm
"""

import gdcm
import sys

#filename = "/home/mmalaterre/Creatis/gdcmDataExtra/gdcmNonImageData/audio_from_rafael_sanguinetti.dcm"
filename = sys.argv[1]
print filename

r = gdcm.Reader()
r.SetFileName( filename )
if not r.Read():
  sys.exit(1)

ds = r.GetFile().GetDataSet()

waveformtag = gdcm.Tag(0x5400,0x0100)
waveformsq = ds.GetDataElement( waveformtag )
#print waveformsq

#print dir(waveformsq)

items = waveformsq.GetSequenceOfItems()

if not items.GetNumberOfItems():
  sys.exit(1)

item = items.GetItem(1)
#print item

waveformds = item.GetNestedDataSet()
#print waveformds

waveformdatatag = gdcm.Tag(0x5400,0x1010)
waveformdata = waveformds.GetDataElement( waveformdatatag )

#print waveformdata.GetPointer()
bv = waveformdata.GetByteValue()
print dir(bv)

#print bv.GetPointer()
print bv.GetLength()
l = 116838

file='test.wav'
myfile = open(file, "wb")
s = bv.GetPointer()
for i in range(0, l):
  myfile.write(s[i])
myfile.close()

# http://mail.python.org/pipermail/python-list/2004-October/288905.html
if sys.platform.startswith('win'):
   from winsound import PlaySound, SND_FILENAME, SND_ASYNC
   PlaySound(file, SND_FILENAME|SND_ASYNC)
elif sys.platform.find('linux')>-1:
   from wave import open as waveOpen
   from ossaudiodev import open as ossOpen
   s = waveOpen(file,'rb')
   (nc,sw,fr,nf,comptype, compname) = s.getparams( )
   dsp = ossOpen('/dev/dsp','w')
   try:
     from ossaudiodev import AFMT_S16_NE
   except ImportError:
     if byteorder == "little":
       AFMT_S16_NE = ossaudiodev.AFMT_S16_LE
     else:
       AFMT_S16_NE = ossaudiodev.AFMT_S16_BE
   dsp.setparameters(AFMT_S16_NE, nc, fr)
   data = s.readframes(nf)
   s.close()
   dsp.write(data)
   dsp.close()