70 lines
2.1 KiB
Python
70 lines
2.1 KiB
Python
|
import lilv, numpy, wave
|
||
|
|
import soundfile
|
||
|
|
from ctypes import c_float, c_int
|
||
|
|
|
||
|
|
frames, sample_rate = soundfile.read('a.flac')
|
||
|
|
num_frames = len(frames)
|
||
|
|
print(f"{sample_rate}Hz | {int(num_frames/sample_rate/60)}:{int(num_frames/sample_rate%60)}")
|
||
|
|
print(frames.dtype)
|
||
|
|
frames = frames.astype(numpy.float32)
|
||
|
|
|
||
|
|
world = lilv.World()
|
||
|
|
world.load_all()
|
||
|
|
|
||
|
|
plugins = world.get_all_plugins()
|
||
|
|
|
||
|
|
plugin = plugins.get_by_uri("http://lsp-plug.in/plugins/lv2/comp_delay_x2_stereo")
|
||
|
|
|
||
|
|
print(plugin.get_name())
|
||
|
|
|
||
|
|
for i in range(plugin.get_num_ports()):
|
||
|
|
port = plugin.get_port(i)
|
||
|
|
print(f"Port {i}: {port.get_name()} = {port.get_range()[0]}")
|
||
|
|
|
||
|
|
instance = lilv.Instance(plugin, sample_rate)
|
||
|
|
|
||
|
|
output_left = numpy.zeros(num_frames, frames.dtype)
|
||
|
|
output_right = numpy.zeros(num_frames, frames.dtype)
|
||
|
|
|
||
|
|
input_left_chunk = numpy.zeros(512, frames.dtype)
|
||
|
|
input_right_chunk = numpy.zeros(512, frames.dtype)
|
||
|
|
output_left_chunk = numpy.zeros(512, frames.dtype)
|
||
|
|
output_right_chunk = numpy.zeros(512, frames.dtype)
|
||
|
|
|
||
|
|
instance.connect_port(0, input_left_chunk)
|
||
|
|
instance.connect_port(1, input_right_chunk)
|
||
|
|
instance.connect_port(2, output_left_chunk)
|
||
|
|
instance.connect_port(3, output_right_chunk)
|
||
|
|
|
||
|
|
mode_left = numpy.array([2], dtype=numpy.int32)
|
||
|
|
instance.connect_port(5, mode_left)
|
||
|
|
|
||
|
|
time_left = numpy.array([0.0], dtype=numpy.float32)
|
||
|
|
instance.connect_port(11, time_left)
|
||
|
|
|
||
|
|
mode_right = numpy.array([2], dtype=numpy.int32)
|
||
|
|
instance.connect_port(16, mode_right)
|
||
|
|
|
||
|
|
time_right = numpy.array([500.0], dtype=numpy.float32)
|
||
|
|
instance.connect_port(22, time_right)
|
||
|
|
|
||
|
|
instance.activate()
|
||
|
|
|
||
|
|
print(f"frames: {num_frames}\n")
|
||
|
|
for start in range(0, num_frames, 512):
|
||
|
|
end = min(start + 512, num_frames)
|
||
|
|
chunk_size = end - start
|
||
|
|
print("\033[F", start, chunk_size, end)
|
||
|
|
|
||
|
|
input_left_chunk[:chunk_size] = frames[start:end, 0]
|
||
|
|
input_right_chunk[:chunk_size] = frames[start:end, 1]
|
||
|
|
|
||
|
|
instance.run(chunk_size)
|
||
|
|
|
||
|
|
output_left[start:end] = output_left_chunk[:chunk_size]
|
||
|
|
output_right[start:end] = output_right_chunk[:chunk_size]
|
||
|
|
|
||
|
|
instance.deactivate()
|
||
|
|
|
||
|
|
merged = numpy.column_stack((output_left, output_right))
|
||
|
|
soundfile.write('aoutt.flac', merged, sample_rate)
|