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Make volume fade graph update much smoother.

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VLC get_time and get_position are very granular, only updating about
3-4 times a second. Instead, calculate play_time by substracting track
start time from current time and expressing that as milliseconds.
This commit is contained in:
Keith Edmunds 2023-06-19 00:55:04 +01:00
parent 4eb3a98c95
commit b706008101
2 changed files with 17 additions and 10 deletions
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2
app/config.py
View File

@ -80,7 +80,7 @@ class Config(object):
SCROLL_TOP_MARGIN = 3
TEXT_NO_TRACK_NO_NOTE = "[Section header]"
TOD_TIME_FORMAT = "%H:%M:%S"
TIMER_MS = 100
TIMER_MS = 10
TRACK_TIME_FORMAT = "%H:%M:%S"
VOLUME_VLC_DEFAULT = 75
VOLUME_VLC_DROP3db = 65

25
app/musicmuster.py
View File

@ -180,13 +180,13 @@ class FadeCurve:
self.curve = self.GraphWidget.plot(self.graph_array)
self.curve.setPen(Config.FADE_CURVE_FOREGROUND)
def tick(self, play_position) -> None:
def tick(self, play_time) -> None:
"""Update volume fade curve"""
if not self.GraphWidget:
return
ms_of_graph = play_position - self.start_ms
ms_of_graph = play_time - self.start_ms
if ms_of_graph < 0:
return
@ -333,7 +333,7 @@ class Window(QMainWindow, Ui_MainWindow):
self.setupUi(self)
self.timer: QTimer = QTimer()
self.even_tick: bool = True
self.clock_counter: int = 0
self.music: music.Music = music.Music()
self.playing: bool = False
@ -1676,10 +1676,10 @@ class Window(QMainWindow, Ui_MainWindow):
self.clock_counter is incrememted at each tick (100ms), and this
value is used to determine the actions to take.
The Fade Volume graph is updated every 100ms.
The Fade Volume graph is updated every 10ms.
The Time of Day clock and any cart progress bars are updated
every tick (500ms).
every 500ms.
All other timers are updated every second. As the timer displays
have a one-second resolution, updating every 500ms can result in
@ -1697,17 +1697,24 @@ class Window(QMainWindow, Ui_MainWindow):
"""
# Update volume fade curve
if self.current_track.track_id and self.current_track.fade_graph:
self.current_track.fade_graph.tick(self.music.get_playtime())
if (
self.current_track.track_id and
self.current_track.fade_graph and
self.current_track.start_time
):
play_time = (
datetime.now() - self.current_track.start_time
).total_seconds() * 1000
self.current_track.fade_graph.tick(play_time)
if self.clock_counter % 2 == 0:
if self.clock_counter % 20 == 0:
# Update TOD clock
self.lblTOD.setText(datetime.now().strftime(
Config.TOD_TIME_FORMAT))
# Update carts
self.cart_tick()
if self.clock_counter % 5 == 0:
if self.clock_counter % 50 == 0:
if not self.playing:
return