class AudioGUIServerApplication:
WINDOW_NAME = "Audio Server Application"
AUDIO_FOLDER_NAME = "audio"
SUPPORTED_FORMATS = [".wav", ".mp3"]
PROGRESS_BAR_SIZE = 200
LOOP_FREQUENCY = 22
def __init__(self):
self._window = Tk()
self._window.title(self.WINDOW_NAME)
self._window.protocol("WM_DELETE_WINDOW", self._close_application)
self._window.resizable(1, 1)
self._audio_server = ServerNetworkProcess()
self._audio_server.start()
self._audio_file_list = []
self._selected_audio_file = ""
self._audio_playing = False
self._audio_data = []
self._prev_audio_index = 0
self._current_audio_index = constants.AUDIO_BYTE_FRAME_SIZE
self._build_window_space()
self._window.after(20, self._update_loop)
self._window.mainloop()
return
def __del__(self):
return
def _close_application(self):
self._audio_server.stop()
self._window.quit()
return
def _build_window_space(self):
# On the left most side there should be a list of the songs
self._audio_file_list = self._get_audio_file_list()
self._file_list_box = Listbox(self._window)
self._file_list_box.grid(row=0, column=0, sticky=tkinter.W, rowspan=3)
self._file_list_box.grid_configure(sticky="nsew")
for audio_file_name in self._audio_file_list:
self._file_list_box.insert(tkinter.END, audio_file_name)
# Then in the middle want to then have the current song playing listed
self._song_playing_text = tkinter.StringVar()
self._song_playing_text.set("Nothing")
self._song_playing_label = Label(self._window,
textvariable=self._song_playing_text)
self._song_playing_label.grid(row=0, column=1, rowspan=2)
self._song_playing_label.grid_configure(sticky="nsew")
# Want to have below it a progress bar of where in the song it is
self._song_progress_bar = ttk.Progressbar(
self._window, orient="horizontal", length=self.PROGRESS_BAR_SIZE)
self._song_progress_bar.grid(row=2, column=1)
self._song_progress_bar.grid_configure(sticky="nsew")
# Set so the window properly adjust on resize
self._window.grid_columnconfigure(0, weight=1)
self._window.grid_columnconfigure(1, weight=1)
self._window.grid_rowconfigure(0, weight=1)
self._window.grid_rowconfigure(1, weight=1)
return
def _get_audio_file_list(self):
audio_files = []
for file in os.listdir(self.AUDIO_FOLDER_NAME):
for file_extension in self.SUPPORTED_FORMATS:
if file.endswith(file_extension):
audio_files.append(file)
return audio_files
def _update_loop(self):
loop_start_time = datetime.datetime.now()
selected_file = self._file_list_box.get(tkinter.ANCHOR)
if self._selected_audio_file != selected_file:
self._song_playing_text.set(selected_file)
self._selected_audio_file = selected_file
self._start_playing_audio_file()
if self._audio_playing:
self._update_audio_playback()
loop_end_time = datetime.datetime.now()
loop_run_time = (loop_end_time - loop_start_time).total_seconds()
loop_run_time_ms = int(loop_run_time * 1000)
if loop_run_time_ms >= self.LOOP_FREQUENCY:
self._window.after(1, self._update_loop)
else:
next_loop_time = self.LOOP_FREQUENCY - loop_run_time_ms
self._window.after(next_loop_time, self._update_loop)
return
def _start_playing_audio_file(self):
actual_audio_file = os.path.join(self.AUDIO_FOLDER_NAME,
self._selected_audio_file)
file_data = pydub.AudioSegment.from_file(actual_audio_file)
self._audio_data = file_data.raw_data
self._audio_playing = True
self._prev_audio_index = 0
self._current_audio_index = constants.AUDIO_BYTE_FRAME_SIZE
return
def _update_audio_playback(self):
audio_time = datetime.datetime.now()
audio_segment = self._audio_data[self._prev_audio_index:self.
_current_audio_index]
audio_message = {
constants.AUDIO_PAYLOAD_STR: list(audio_segment),
constants.TIMESTAMP_STR: str(audio_time)
}
self._audio_server.add_audio_packet(audio_message, wait=False)
self._prev_audio_index = self._current_audio_index
self._current_audio_index += constants.AUDIO_BYTE_FRAME_SIZE
if self._current_audio_index > len(self._audio_data):
self._audio_playing = False
else:
self._update_progress_bar()
return
def _update_progress_bar(self):
song_progress = self._current_audio_index / len(self._audio_data)
progress_percent = song_progress * 100
self._song_progress_bar["value"] = progress_percent
return
