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scarlett_player.py
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scarlett_player.py
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#!/usr/bin/env python
# -*- coding: UTF-8 -*-
#### DISABLED BOSSJONES # import pprint
#### DISABLED BOSSJONES # import dbus
#### DISABLED BOSSJONES # import dbus.service
#### DISABLED BOSSJONES # import dbus.mainloop.glib
#### DISABLED BOSSJONES # from dbus.mainloop.glib import threads_init
#### DISABLED BOSSJONES # import gobject
#### DISABLED BOSSJONES # gobject.threads_init()
#### DISABLED BOSSJONES # threads_init()
#### DISABLED BOSSJONES #
#### DISABLED BOSSJONES # import pygst
#### DISABLED BOSSJONES # pygst.require('0.10')
#### DISABLED BOSSJONES # import gst
import dbus
import dbus.service
from dbus.mainloop.glib import DBusGMainLoop
from dbus.mainloop.glib import threads_init
import argparse
import pprint
pp = pprint.PrettyPrinter(indent=4)
import gi
gi.require_version('Gst', '1.0')
from gi.repository import GObject
from gi.repository import Gst
from gi.repository import GLib
from gi.repository import Gio
import threading
GObject.threads_init()
Gst.init(None)
threads_init()
DBusGMainLoop(set_as_default=True)
print '********************************************************'
print 'GObject: '
pp.pprint(GObject.pygobject_version)
print ''
print 'Gst: '
pp.pprint(Gst.version_string())
print '********************************************************'
Gst.debug_set_active(True)
Gst.debug_set_default_threshold(3)
import StringIO
import os
import sys
import re
import ConfigParser
import signal
from IPython.core.debugger import Tracer
from IPython.core import ultratb
sys.excepthook = ultratb.FormattedTB(mode='Verbose',
color_scheme='Linux',
call_pdb=True,
ostream=sys.__stdout__)
from colorlog import ColoredFormatter
import logging
import time
import scarlett_gstutils
def setup_logger():
"""Return a logger with a default ColoredFormatter."""
formatter = ColoredFormatter(
"%(asctime)s.%(msecs)03d (%(threadName)-9s) %(filename)s %(funcName)s %(module)s %(processName)s %(log_color)s%(levelname)-8s%(reset)s %(message_log_color)s%(message)s",
datefmt='%Y-%m-%d,%H:%M:%S',
reset=True,
log_colors={
'DEBUG': 'cyan',
'INFO': 'green',
'WARNING': 'yellow',
'ERROR': 'red',
'CRITICAL': 'red',
},
secondary_log_colors={
'message': {
'ERROR': 'red',
'CRITICAL': 'red',
'DEBUG': 'yellow'
}
},
style='%'
)
logger = logging.getLogger(__name__)
handler = logging.StreamHandler()
handler.setFormatter(formatter)
logger.addHandler(handler)
logger.setLevel(logging.DEBUG)
return logger
# Create a player
PWD = '/home/pi/dev/bossjones-github/scarlett-dbus-poc'
logger = setup_logger()
gst = Gst
class ScarlettPlayer():
def __init__(self, sound):
global PWD
global logger
self._loop = GLib.MainLoop()
self.debug = False
# Element playbin automatic plays any sound
self.player = gst.element_factory_make("playbin2", "player")
self.end_cond = threading.Condition(threading.Lock())
# Set the uri to the sound
filename = f'{PWD}/static/sounds/{sound}.wav'
self.player.set_property('uri', f'file://{filename}')
self.sound = sound
# Enable message bus to check for errors in the pipeline
bus = self.player.get_bus()
bus.add_signal_watch()
# bus.enable_sync_message_emission()
bus.connect("message", self._on_message_cb)
# bus.connect("message::eos", self.on_finish)
# bus.connect('message::error', self.on_error)
logger.debug("ScarlettPlayer __init__ finished")
self.mainloopthread = scarlett_gstutils.MainloopThread(self._loop)
self.mainloopthread.start()
# start pipeline
self.player.set_state(gst.STATE_PLAYING)
def release(self):
if hasattr(self, 'eod') and hasattr(self, '_loop'):
self.end_cond.acquire()
while not hasattr(self, 'end_reached'):
self.end_cond.wait()
self.end_cond.release()
if hasattr(self, 'error_msg'):
raise IOError(self.error_msg)
def run(self):
logger.debug(f"ScarlettPlayer sound: {self.sound}")
# self.player.set_state(gst.STATE_PLAYING)
self._loop.run()
def on_message(self, bus, message):
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(bus)
pp.pprint(message)
t = message.type
if t == gst.MESSAGE_EOS:
logger.debug("OKAY, MESSAGE_EOS: ".format(gst.MESSAGE_EOS))
self.player.set_state(gst.STATE_NULL)
self._loop.quit()
self.quit()
elif t == gst.MESSAGE_ERROR:
logger.debug("OKAY, MESSAGE_ERROR: ".format(gst.MESSAGE_ERROR))
self.player.set_state(gst.STATE_NULL)
err, debug = message.parse_error()
print "Error: %s" % err, debug
self._loop.quit()
self.quit()
def finish_request(self):
self.player.set_state(gst.STATE_NULL)
self._loop.quit()
self.quit()
time.sleep(2)
return
def _on_message_cb(self, bus, message):
if self.debug:
pp = pprint.PrettyPrinter(indent=4)
pp.pprint(bus)
pp.pprint(message)
t = message.type
if t == gst.MESSAGE_EOS:
logger.debug("OKAY, MESSAGE_EOS: ".format(gst.MESSAGE_EOS))
self.end_cond.acquire()
self.player.set_state(gst.STATE_NULL)
self._loop.quit()
self.end_reached = True
self.end_cond.notify()
self.end_cond.release()
self.quit()
elif t == gst.MESSAGE_ERROR:
logger.debug("OKAY, MESSAGE_ERROR: ".format(gst.MESSAGE_ERROR))
self.end_cond.acquire()
self.player.set_state(gst.STATE_NULL)
self._loop.quit()
self.end_reached = True
err, debug = message.parse_error()
self.error_msg = f"Error: {err}", debug
self.end_cond.notify()
self.end_cond.release()
self.quit()
def on_finish(self, bus, message):
logger.debug("OKAY, on_finish. Setting state to STATE_NULL")
self.finish_request()
def on_error(self, bus, message):
logger.debug("OKAY, on_error. Setting state to STATE_NULL")
self.finish_request()
def quit(self):
logger.debug(" shutting down ScarlettPlayer")