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Various tweaks to audio demo.

pull/8/head
Peter Hinch 2021-09-29 17:39:22 +01:00
rodzic fae4c5edc9
commit dcd907c69b
1 zmienionych plików z 5 dodań i 6 usunięć
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11
gui/demos/audio.py
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@ -173,7 +173,8 @@ class BaseScreen(Screen):
Screen.change(SelectScreen, args=[wri,]) Screen.change(SelectScreen, args=[wri,])
def play_album(self): def play_album(self):
self.reg_task(asyncio.create_task(self.album_task())) if not self.playing:
self.reg_task(asyncio.create_task(self.album_task()))
def after_open(self): def after_open(self):
self.songs = SelectScreen.songs self.songs = SelectScreen.songs
@ -185,17 +186,12 @@ class BaseScreen(Screen):
def show_song(self): def show_song(self):
song = self.songs[self.song_idx] song = self.songs[self.song_idx]
print('refresh', song)
ns = song.find(SelectScreen.album) ns = song.find(SelectScreen.album)
ne = song[ns:].find('/') + 1 ne = song[ns:].find('/') + 1
end = song[ns + ne:].find(".wav") end = song[ns + ne:].find(".wav")
self.lblsong.value(song[ns + ne: ns + ne + end]) self.lblsong.value(song[ns + ne: ns + ne + end])
async def album_task(self): async def album_task(self):
# Must ensure that only one instance of album_task is running
self.stop_play = True # Stop the running instance
while self.playing: # Wait for it to happen
await asyncio.sleep_ms(200)
self.playing = True # Prevent other instances self.playing = True # Prevent other instances
self.stop_play = False self.stop_play = False
# Leave paused status unchanged # Leave paused status unchanged
@ -206,6 +202,9 @@ class BaseScreen(Screen):
if self.stop_play: if self.stop_play:
break # A callback has stopped playback break # A callback has stopped playback
self.song_idx += 1 self.song_idx += 1
else:
self.song_idx = 0 # Played to completion.
self.show_song()
self.playing = False self.playing = False
# Open and play a binary wav file # Open and play a binary wav file