add hg and python

sys/lib/python/plat-mac/Audio_mac.py

@@ -0,0 +1,121 @@
+QSIZE = 100000
+error='Audio_mac.error'
+
+class Play_Audio_mac:
+
+    def __init__(self, qsize=QSIZE):
+        self._chan = None
+        self._qsize = qsize
+        self._outrate = 22254
+        self._sampwidth = 1
+        self._nchannels = 1
+        self._gc = []
+        self._usercallback = None
+
+    def __del__(self):
+        self.stop()
+        self._usercallback = None
+
+    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 Carbon.Sound import bufferCmd, callBackCmd, extSH
+        import struct
+        import MacOS
+        if not self._chan:
+            from Carbon 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 error, '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)+MacOS.string_id_to_buffer,
+            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]
+        if self._usercallback:
+            self._usercallback()
+
+    def setcallback(self, callback):
+        self._usercallback = callback
+
+    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._nchannels / self._sampwidth) - self.getfilled()
+
+    def ulaw2lin(self, data):
+        import audioop
+        return audioop.ulaw2lin(data, 2)
+
+def test():
+    import aifc
+    import EasyDialogs
+    fn = EasyDialogs.AskFileForOpen(message="Select an AIFF soundfile", typeList=("AIFF",))
+    if not fn: return
+    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)
+        print 'wrote', len(data), 'space', p.getfillable()
+    p.wait()
+
+if __name__ == '__main__':
+    test()