mirror of
https://github.com/python/cpython.git
synced 2024-11-24 08:52:25 +01:00
109 lines
2.3 KiB
Python
109 lines
2.3 KiB
Python
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()
|