class Player(object):
def __init__(self,
freq=None,
backend=None,
output_device=None,
sample_rate=None,
block_size=None):
self.pysoundio = PySoundIo(backend=None)
self.freq = float(freq)
self.seconds_offset = 0.0
self.radians_per_second = self.freq * 2.0 * math.pi
self.seconds_per_frame = 1.0 / sample_rate
self.pysoundio.start_output_stream(device_id=output_device,
channels=1,
sample_rate=sample_rate,
block_size=block_size,
dtype=SoundIoFormatFloat32LE,
write_callback=self.callback)
def close(self):
self.pysoundio.close()
def callback(self, data, length):
indata = ar.array('f', [0] * length)
for i in range(0, length):
indata[i] = math.sin(
(self.seconds_offset + i * self.seconds_per_frame) *
self.radians_per_second)
data[:] = indata.tostring()
self.seconds_offset += self.seconds_per_frame * length
class Player(object):
def __init__(self,
infile,
backend=None,
output_device=None,
block_size=None):
data, rate = sf.read(infile, dtype='float32', always_2d=True)
self.data = [d[0] for d in data]
self.block_size = block_size
self.pysoundio = PySoundIo(backend=None)
self.pysoundio.start_output_stream(device_id=output_device,
channels=1,
sample_rate=rate,
block_size=self.block_size,
dtype=SoundIoFormatFloat32LE,
write_callback=self.callback)
self.cb = 0
self.total_blocks = len(self.data)
self.timer = self.total_blocks / float(rate)
def close(self):
self.pysoundio.close()
def callback(self, data, length):
dlen = (self.block_size if self.cb +
self.block_size <= self.total_blocks else self.total_blocks -
self.cb)
data[:] = struct.pack('%sf' % dlen, *self.data[self.cb:self.cb + dlen])
self.cb += dlen
class Player:
def __init__(self,
infile,
backend=None,
output_device=None,
block_size=None):
data, rate = sf.read(infile, dtype='float32', always_2d=True)
self.idx = 0
self.stream = data.tobytes()
self.block_size = block_size
self.total_blocks = len(data)
self.timer = self.total_blocks / float(rate)
self.num_channels = data.shape[1]
self.sample_size = data.dtype.itemsize
self.pysoundio = PySoundIo(backend=backend)
self.pysoundio.start_output_stream(device_id=output_device,
channels=self.num_channels,
sample_rate=rate,
block_size=self.block_size,
dtype=SoundIoFormatFloat32LE,
write_callback=self.callback)
print('%s:\n' % infile)
print(' Channels: %d' % data.shape[1])
print(' Sample rate: %dHz' % rate)
print('')
def close(self):
self.pysoundio.close()
def callback(self, data, length):
num_bytes = length * self.sample_size * self.num_channels
data[:] = self.stream[self.idx:self.idx + num_bytes]
self.idx += num_bytes