import threading
import pydub
-import math
import time
from transitions.extensions import HierarchicalMachine as Machine
import os.path
from .lock import Lock
+from . import gain
+
file_lock = Lock("file")
pyaudio = pa.PyAudio()
class MusicFile(Machine):
- def __init__(self, filename, name = None, gain = 1):
+ def __init__(self, filename, mapping, name = None, gain = 1):
states = [
'initial',
'loading',
Machine.__init__(self, states=states, transitions=transitions, initial='initial')
+ self.volume = 100
+ self.mapping = mapping
self.filename = filename
self.stream = None
self.name = name or filename
self.audio_segment = None
- self.gain = gain
+ self.volume_factor = gain
self.music_lock = Lock("music__" + filename)
+ self.wait_event = threading.Event()
- self.flag_paused = False
threading.Thread(name = "MSMusicLoad", target = self.load).start()
def on_enter_loading(self):
with file_lock:
try:
print("Loading « {} »".format(self.name))
- volume_factor = 20 * math.log10(self.gain)
- self.audio_segment = pydub.AudioSegment.from_file(self.filename).set_frame_rate(44100).apply_gain(volume_factor)
+ db_gain = gain(self.volume_factor * 100)
+ self.audio_segment = pydub.AudioSegment.from_file(self.filename).set_frame_rate(44100).apply_gain(db_gain)
self.sound_duration = self.audio_segment.duration_seconds
except Exception as e:
print("failed to load « {} »: {}".format(self.name, e))
else:
return 0
- def play(self, fade_in = 0, volume = 100, start_at = 0):
- self.db_gain = self.volume_to_gain(volume)
+ def play(self, fade_in = 0, volume = 100, loop = 0, start_at = 0):
+ db_gain = gain(volume) + self.mapping.master_gain
+ self.volume = volume
+ self.loop = loop
+
ms = int(start_at * 1000)
ms_fi = max(1, int(fade_in * 1000))
with self.music_lock:
- self.current_audio_segment = (self.audio_segment + self.db_gain).fade(from_gain=-120, duration=ms_fi, start=ms)
- self.before_loaded_playing(initial_frame = int(start_at * self.audio_segment.frame_rate))
+ self.current_audio_segment = (self.audio_segment + db_gain).fade(from_gain=-120, duration=ms_fi, start=ms)
+ self.initial_frame = int(start_at * self.audio_segment.frame_rate)
+ self.before_loaded_playing()
self.start_playing()
- def before_loaded_playing(self, initial_frame = 0):
- self.current_frame = initial_frame
+ def before_loaded_playing(self):
+ self.current_frame = self.initial_frame
with self.music_lock:
segment = self.current_audio_segment
if self.is_loaded_stopping():
self.stopped()
+ def on_enter_loaded_stopped(self):
+ self.wait_event.set()
+
def play_callback(self, out_data, frame_count, time_info, status_flags):
with self.music_lock:
audio_segment = self.current_audio_segment.get_sample_slice_data(
)
self.current_frame += frame_count
if len(audio_segment) == 0:
- raise sd.CallbackStop
+ if self.is_loaded_playing() and self.loop != 0:
+ self.loop -= 1
+ self.current_frame = self.initial_frame
+ else:
+ raise sd.CallbackStop
out_data[:] = audio_segment.ljust(len(out_data), b'\0')
- def stop(self, fade_out = 0):
+ def seek(self, value = 0, delta = False):
+ # We don't want to do that while stopping
+ if not (self.is_loaded_playing() or self.is_loaded_paused()):
+ return
+ with self.music_lock:
+ self.current_frame = max(0, int(delta) * self.current_frame + int(value * self.audio_segment.frame_rate))
+
+ def stop(self, fade_out = 0, wait = False):
if self.is_loaded_playing():
ms = int(self.sound_position * 1000)
ms_fo = max(1, int(fade_out * 1000))
with self.music_lock:
self.current_audio_segment = self.current_audio_segment[:ms + ms_fo].fade_out(ms_fo)
self.stop_playing()
+ if wait:
+ self.wait_end()
else:
self.stop_playing()
self.stopped()
- def set_volume(self, value):
- if self.is_loaded_stopped():
+ def set_gain(self, db_gain):
+ if not self.is_not_stopped():
return
- db_gain = self.volume_to_gain(value)
- new_audio_segment = self.current_audio_segment + (db_gain - self.db_gain)
- self.db_gain = db_gain
+ new_audio_segment = self.current_audio_segment + db_gain
+
with self.music_lock:
self.current_audio_segment = new_audio_segment
- def volume_to_gain(self, volume):
- return 20 * math.log10(max(volume, 0.0001) / 100)
+ def set_volume(self, value, delta = False):
+ [db_gain, self.volume] = gain(value + int(delta) * self.volume, self.volume)
+
+ self.set_gain(db_gain)
def wait_end(self):
- # FIXME: todo
- pass
+ self.wait_event.clear()
+ self.wait_event.wait()
# Add some more functions to AudioSegments
def get_sample_slice_data(self, start_sample=0, end_sample=float('inf')):