diff options
Diffstat (limited to 'Lib/plat-mac/Audio_mac.py')
| -rw-r--r-- | Lib/plat-mac/Audio_mac.py | 202 |
1 files changed, 101 insertions, 101 deletions
diff --git a/Lib/plat-mac/Audio_mac.py b/Lib/plat-mac/Audio_mac.py index bf99787..5350e55 100644 --- a/Lib/plat-mac/Audio_mac.py +++ b/Lib/plat-mac/Audio_mac.py @@ -3,119 +3,119 @@ 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 __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 __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 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 stop(self, quietNow = 1): + ##chan = self._chan + self._chan = None + ##chan.SndDisposeChannel(1) + self._gc = [] - def setoutrate(self, outrate): - self._outrate = outrate + def setoutrate(self, outrate): + self._outrate = outrate - def setsampwidth(self, sampwidth): - self._sampwidth = sampwidth + def setsampwidth(self, sampwidth): + self._sampwidth = sampwidth - def setnchannels(self, nchannels): - self._nchannels = nchannels + 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 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 _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 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 getfillable(self): + return (self._qsize / self._nchannels / self._sampwidth) - self.getfilled() - def ulaw2lin(self, data): - import audioop - return audioop.ulaw2lin(data, 2) + 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() + 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() + test() |