Committed a more or less working version.
diff --git a/Mac/Lib/Audio_mac.py b/Mac/Lib/Audio_mac.py
new file mode 100644
index 0000000..373f16a
--- /dev/null
+++ b/Mac/Lib/Audio_mac.py
@@ -0,0 +1,108 @@
+QSIZE = 100000
+
+class Play_Audio_mac:
+
+ def __init__(self):
+ self._chan = None
+ self._qsize = QSIZE
+ self._outrate = 22254
+ self._sampwidth = 1
+ self._nchannels = 1
+ self._gc = []
+
+ def __del__(self):
+ self.stop()
+
+ def wait(self):
+ import time
+ while self.getfilled():
+ time.sleep(0.1)
+ self._chan = None
+ self._gc = []
+
+ def stop(self, quietNow = 1):
+ ##chan = self._chan
+ self._chan = None
+ ##chan.SndDisposeChannel(1)
+ self._gc = []
+
+ def setoutrate(self, outrate):
+ self._outrate = outrate
+
+ def setsampwidth(self, sampwidth):
+ self._sampwidth = sampwidth
+
+ def setnchannels(self, nchannels):
+ self._nchannels = nchannels
+
+ def writeframes(self, data):
+ import time
+ from Sound import *
+ import struct
+ if not self._chan:
+ import Snd
+ self._chan = Snd.SndNewChannel(5, 0, self._callback)
+ nframes = len(data) / self._nchannels / self._sampwidth
+ if len(data) != nframes * self._nchannels * self._sampwidth:
+ raise ValueError, 'data is not a whole number of frames'
+ while self._gc and \
+ self.getfilled() + nframes > \
+ self._qsize / self._nchannels / self._sampwidth:
+ time.sleep(0.1)
+ if self._sampwidth == 1:
+ import audioop
+ data = audioop.add(data, '\x80'*len(data), 1)
+ h1 = struct.pack('llhhllbbl',
+ id(data)+12,
+ self._nchannels,
+ self._outrate, 0,
+ 0,
+ 0,
+ extSH,
+ 60,
+ nframes)
+ h2 = 22*'\0'
+ h3 = struct.pack('hhlll',
+ self._sampwidth*8,
+ 0,
+ 0,
+ 0,
+ 0)
+ header = h1+h2+h3
+ self._gc.append((header, data))
+ self._chan.SndDoCommand((bufferCmd, 0, header), 0)
+ self._chan.SndDoCommand((callBackCmd, 0, 0), 0)
+
+ def _callback(self, *args):
+ del self._gc[0]
+
+ def getfilled(self):
+ filled = 0
+ for header, data in self._gc:
+ filled = filled + len(data)
+ return filled / self._nchannels / self._sampwidth
+
+ def getfillable(self):
+ return self._qsize - self.getfilled()
+
+ def ulaw2lin(self, data):
+ import audioop
+ return audioop.ulaw2lin(data, 2)
+
+def test(fn = 'f:just samples:just.aif'):
+ import aifc
+ af = aifc.open(fn, 'r')
+ print af.getparams()
+ p = Play_Audio_mac()
+ p.setoutrate(af.getframerate())
+ p.setsampwidth(af.getsampwidth())
+ p.setnchannels(af.getnchannels())
+ BUFSIZ = 10000
+ while 1:
+ data = af.readframes(BUFSIZ)
+ if not data: break
+ p.writeframes(data)
+ p.wait()
+
+if __name__ == '__main__':
+ test()