Python aifc.open方法代碼示例

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def writeframes(self, data):
        if not (self.inited_outrate and self.inited_width and self.inited_nchannels):
            raise error, 'params not specified'
        if not self.port:
            import sunaudiodev, SUNAUDIODEV
            self.port = sunaudiodev.open('w')
            info = self.port.getinfo()
            info.o_sample_rate = self.outrate
            info.o_channels = self.nchannels
            if self.sampwidth == 0:
                info.o_precision = 8
                self.o_encoding = SUNAUDIODEV.ENCODING_ULAW
                # XXX Hack, hack -- leave defaults
            else:
                info.o_precision = 8 * self.sampwidth
                info.o_encoding = SUNAUDIODEV.ENCODING_LINEAR
                self.port.setinfo(info)
        if self.converter:
            data = self.converter(data)
        self.port.write(data) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test(fn = None):
    import sys
    if sys.argv[1:]:
        fn = sys.argv[1]
    else:
        fn = 'f:just samples:just.aif'
    import aifc
    af = aifc.open(fn, 'r')
    print fn, af.getparams()
    p = AudioDev()
    p.setoutrate(af.getframerate())
    p.setsampwidth(af.getsampwidth())
    p.setnchannels(af.getnchannels())
    BUFSIZ = af.getframerate()/af.getsampwidth()/af.getnchannels()
    while 1:
        data = af.readframes(BUFSIZ)
        if not data: break
        print len(data)
        p.writeframes(data)
    p.wait() 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_write_params_singles(self):
        fout = aifc.open(io.BytesIO(), 'wb')
        fout.aifc()
        fout.setnchannels(1)
        fout.setsampwidth(2)
        fout.setframerate(3)
        fout.setnframes(4)
        fout.setcomptype('NONE', 'name')
        self.assertEqual(fout.getnchannels(), 1)
        self.assertEqual(fout.getsampwidth(), 2)
        self.assertEqual(fout.getframerate(), 3)
        self.assertEqual(fout.getnframes(), 0)
        self.assertEqual(fout.tell(), 0)
        self.assertEqual(fout.getcomptype(), 'NONE')
        self.assertEqual(fout.getcompname(), 'name')
        fout.writeframes('\x00' * 4 * fout.getsampwidth() * fout.getnchannels())
        self.assertEqual(fout.getnframes(), 4)
        self.assertEqual(fout.tell(), 4) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_compress(self):
        f = self.f = aifc.open(self.sndfilepath)
        fout = self.fout = aifc.open(TESTFN, 'wb')
        fout.aifc()
        fout.setnchannels(f.getnchannels())
        fout.setsampwidth(f.getsampwidth())
        fout.setframerate(f.getframerate())
        fout.setcomptype('ULAW', 'foo')
        for frame in range(f.getnframes()):
            fout.writeframes(f.readframes(1))
        fout.close()
        self.assertLess(
            os.stat(TESTFN).st_size,
            os.stat(self.sndfilepath).st_size*0.75,
            )
        fout = self.fout = aifc.open(TESTFN, 'rb')
        f.rewind()
        self.assertEqual(f.getparams()[0:3], fout.getparams()[0:3])
        self.assertEqual(fout.getcomptype(), 'ULAW')
        self.assertEqual(fout.getcompname(), 'foo')
        # XXX: this test fails, not sure if it should succeed or not
        # self.assertEqual(f.readframes(5), fout.readframes(5)) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_close(self):
        class Wrapfile(object):
            def __init__(self, file):
                self.file = open(file, 'rb')
                self.closed = False
            def close(self):
                self.file.close()
                self.closed = True
            def __getattr__(self, attr): return getattr(self.file, attr)
        testfile = Wrapfile(self.sndfilepath)
        f = self.f = aifc.open(testfile)
        self.assertEqual(testfile.closed, False)
        f.close()
        self.assertEqual(testfile.closed, True)
        testfile = open(TESTFN, 'wb')
        fout = aifc.open(testfile, 'wb')
        self.assertFalse(testfile.closed)
        with self.assertRaises(aifc.Error):
            fout.close()
        self.assertTrue(testfile.closed)
        fout.close() # do nothing 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
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() 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_aifc(h, f):
    import aifc
    if not h.startswith(b'FORM'):
        return None
    if h[8:12] == b'AIFC':
        fmt = 'aifc'
    elif h[8:12] == b'AIFF':
        fmt = 'aiff'
    else:
        return None
    f.seek(0)
    try:
        a = aifc.open(f, 'r')
    except (EOFError, aifc.Error):
        return None
    return (fmt, a.getframerate(), a.getnchannels(),
            a.getnframes(), 8 * a.getsampwidth()) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_write_params_singles(self):
        fout = aifc.open(io.BytesIO(), 'wb')
        fout.aifc()
        fout.setnchannels(1)
        fout.setsampwidth(2)
        fout.setframerate(3)
        fout.setnframes(4)
        fout.setcomptype(b'NONE', b'name')
        self.assertEqual(fout.getnchannels(), 1)
        self.assertEqual(fout.getsampwidth(), 2)
        self.assertEqual(fout.getframerate(), 3)
        self.assertEqual(fout.getnframes(), 0)
        self.assertEqual(fout.tell(), 0)
        self.assertEqual(fout.getcomptype(), b'NONE')
        self.assertEqual(fout.getcompname(), b'name')
        fout.writeframes(b'\x00' * 4 * fout.getsampwidth() * fout.getnchannels())
        self.assertEqual(fout.getnframes(), 4)
        self.assertEqual(fout.tell(), 4) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_skipunknown(self):
        #Issue 2245
        #This file contains chunk types aifc doesn't recognize.
        self.f = aifc.open(findfile('Sine-1000Hz-300ms.aif')) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_write_markers_values(self):
        fout = aifc.open(io.BytesIO(), 'wb')
        self.assertEqual(fout.getmarkers(), None)
        fout.setmark(1, 0, 'foo1')
        fout.setmark(1, 1, 'foo2')
        self.assertEqual(fout.getmark(1), (1, 1, 'foo2'))
        self.assertEqual(fout.getmarkers(), [(1, 1, 'foo2')])
        fout.initfp(None) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_read_markers(self):
        fout = self.fout = aifc.open(TESTFN, 'wb')
        fout.aiff()
        fout.setparams((1, 1, 1, 1, 'NONE', ''))
        fout.setmark(1, 0, 'odd')
        fout.setmark(2, 0, 'even')
        fout.writeframes('\x00')
        fout.close()
        f = self.f = aifc.open(TESTFN, 'rb')
        self.assertEqual(f.getmarkers(), [(1, 0, 'odd'), (2, 0, 'even')])
        self.assertEqual(f.getmark(1), (1, 0, 'odd'))
        self.assertEqual(f.getmark(2), (2, 0, 'even'))
        self.assertRaises(aifc.Error, f.getmark, 3) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_read_wrong_form(self):
        b1 = io.BytesIO('WRNG' + struct.pack('>L', 0))
        b2 = io.BytesIO('FORM' + struct.pack('>L', 4) + 'WRNG')
        self.assertRaises(aifc.Error, aifc.open, b1)
        self.assertRaises(aifc.Error, aifc.open, b2) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_read_no_comm_chunk(self):
        b = io.BytesIO('FORM' + struct.pack('>L', 4) + 'AIFF')
        self.assertRaises(aifc.Error, aifc.open, b) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_read_no_ssnd_chunk(self):
        b = b'FORM' + struct.pack('>L', 4) + b'AIFC'
        b += b'COMM' + struct.pack('>LhlhhLL', 38, 0, 0, 0, 0, 0, 0)
        b += b'NONE' + struct.pack('B', 14) + b'not compressed' + b'\x00'
        with self.assertRaisesRegexp(aifc.Error, 'COMM chunk and/or SSND chunk'
                                                 ' missing'):
            aifc.open(io.BytesIO(b)) 

# 需要導入模塊: import aifc [as 別名]
# 或者: from aifc import open [as 別名]
def test_read_wrong_compression_type(self):
        b = 'FORM' + struct.pack('>L', 4) + 'AIFC'
        b += 'COMM' + struct.pack('>LhlhhLL', 23, 0, 0, 0, 0, 0, 0)
        b += 'WRNG' + struct.pack('B', 0)
        self.assertRaises(aifc.Error, aifc.open, io.BytesIO(b))