dacboard/tree/usr/local/bin/superdac.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# Requires:
#  apt install mpd
#  apt install mpc
#  apt install lirc
#  apt install python3-pip
#  apt install python3-rpi.gpio
#  apt install python3-pil
#  apt install python3-numpy
#  apt install python3-lirc
#  pip3 install pyalsaaudio
#  pip3 install pysmb
#  Python_ST7735-raspimag.tar.gz
#  python-mpd2.tar.gz

# stdlibs
import sys
import os
import signal
import threading
from threading import BoundedSemaphore
from threading import Semaphore
import queue
import platform
from select import select
from time import sleep

# ABCMeta
from abc import ABCMeta, abstractmethod

# Raspberry pi
import RPi.GPIO as GPIO

# PIL
from PIL import Image
from PIL import ImageDraw
from PIL import ImageFont

# Adafruit
import ST7735 as TFT
# import Adafruit_GPIO as GPIO
import Adafruit_GPIO.SPI as SPI

# lirc
import lirc

# mpd
from mpd import MPDClient
from socket import error as SocketError

# alsaaudio
from alsaaudio import Mixer

# SMB
from smb.SMBConnection import SMBConnection
from nmb.NetBIOS import NetBIOS

# LCD spec.
LCD_WIDTH = 128
LCD_HEIGHT = 160
SPEED_HZ = 8000000

# SUPERDAC configration
DC = 24
RST = 23
SPI_PORT = 0
SPI_DEVICE = 0
SW1 = 5
SW2 = 6

# FONT settings
DEFAULT_FONT = '/usr/share/fonts/truetype/fonts-japanese-gothic.ttf'
FONT_SIZE = 12

# PID File
PIDFILE='/var/run/superdac.pid'
LOGFILE='/var/log/superdac.log'

# MPD Socket
MPD_HOST='/var/run/mpd/socket'
MPD_PORT=6600

# lirc configration files
LIRCRC = ['/etc/lirc/superdac.lircrc', '/usr/local/etc/superdac.lircrc', './superdac.lircrc' ]

# Volume file
VOLUME_FILE='/var/tmp/.superdac.volume'

# Openning Logo Image
LOGO_FILE = '/home/settings/scripts/logo.jpg'

class SDTimer(threading.Thread):

	__active = False
	
	def __init__(self, sec, callback):
		super(SDTimer, self).__init__()
		self.daemon = True
		self.__sec = sec
		self.__callback = callback
	
	def getRemaining(self):
		return self.__sec
	
	def setRemaining(self, sec):
		self.__sec = sec
	
	def getActive(self):
		return self.__active
	
	def cancel(self):
		self.__active = False
		
	def run(self):
		self.__active = True
		
		while self.__sec != 0:
			sleep(1)
			self.__sec -= 1
			if self.__active == False:
				break
		
		if self.__active:
			self.__callback()
		self.__active = False
		
		return

		
class castQueue(queue.Queue):

	__depth = 5

	def __init__(self, depth):
		super(castQueue, self).__init__()
		self.__depth = depth
		self.__semaphore = BoundedSemaphore()
	
	def put(self, obj):
		self.__semaphore.acquire()
		while self.qsize() > self.__depth:
			try:
				t = super().get_nowait()
			except queue.Empty:
				pass
		super().put(obj)
		self.__semaphore.release()
		return
		
	def get_nowait(self):
		self.__semaphore.acquire()
		r = None
		try:
			r = super().get_nowait()
		except Exception as e:
			self.__semaphore.release()
			raise e
		self.__semaphore.release()
		return r

		


# Message class
class Message():

	TERM      = 0  # 'term'
	DISPLAY   = 1  # 'disp'
	RCONTROL  = 2  # 'rcontrol'
	MENUON    = 3  # 'menuon'
	MENUOFF   = 4  # 'menuoff'
	MPD       = 5  # 'mpd'
	MPC       = 6  # 'mpc'
	PLAYLIST  = 7  # 'playlist'
	INDICATOR = 8  # 'indicate'
	MPC_REPLY = 9  # 'mpc_reply'
	VOLUME    = 10 # 'volume'
	
	def __init__(self, sender, message, param):
		self.__sender = sender
		self.__message = message
		self.__param = param
	
	def getSender(self):
		return self.__sender
	
	def getMessage(self):
		return self.__message
	
	def getParam(self):
		return self.__param


# LCD Display Item
class LCDItem():
	
	FULL = 0
	TOP = 1
	INDICATE = 2
	BOTTOM = 3

	def __init__(self, image, clear=False, pos=FULL, time=0):
		self.__image = image
		self.__pos = pos
		self.__time = time
		self.__clear = clear
		return
	
	def getClear(self):
		return self.__clear
		
	def getImage(self):
		return self.__image
	
	def getPos(self):
		return self.__pos
	
	def getTime(self):
		return self.__time
		
	def getWidth(self):
		return self.__image.size[0]
	
	def getHeight(self):
		return self.__image.size[1]

# Worker Base
class Worker(metaclass=ABCMeta):
	# type: (Object, Master)

	def __init__(self, pm):
		self.playermain = pm
	
	def sendMessage(self, message):
		self.playermain.postMessage(message)
		
	@abstractmethod
	def receiveMessage(self, message):
		pass

# Master Base
class Master(metaclass=ABCMeta):
	@abstractmethod
	def postMessage(self, message):
		pass


# Switch worker
class Switches(Worker):
	def __init__(self, pm):
		# type: (Object, Master)
		super().__init__(pm)
		
		GPIO.setmode(GPIO.BCM)
		GPIO.setup(SW1, GPIO.IN, pull_up_down=GPIO.PUD_UP)
		GPIO.setup(SW2, GPIO.IN, pull_up_down=GPIO.PUD_UP)
		
		GPIO.add_event_detect(SW1, GPIO.FALLING, callback=self.swCallback, bouncetime=20)
		GPIO.add_event_detect(SW2, GPIO.FALLING, callback=self.swCallback, bouncetime=20)
		
	def swCallback(self, ch):
		if ch == SW1:
			os.system('/sbin/reboot')
		elif ch == SW2:
			os.system('/sbin/poweroff')
		return
	
	def receiveMessage(self, message):
		if message.getMessage() == Message.TERM:
			GPIO.remove_event_detect(SW1)
			GPIO.remove_event_detect(SW2)
			GPIO.cleanup(SW1)
			GPIO.cleanup(SW2)
		
		return True


# Playlist manage worker
class Playlist(Worker):
	
	active = False
	playermain = None
	
	playlists = []
	artists   = []
	albums    = []
	
	items = []
	current = []
	type = ''
	
	LINES = 10
	LINE_HEIGHT = 16
	
	def __init__(self, pm):
		# type: (Object, Master)
		super().__init__(pm)
		
		# 初期データ取得
		self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'playlists' } ))
		self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'album' } ))
		self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'artist' } ))
	
	def makeMenu(self, draw, font):
		self.current = self.items[0:self.LINES-1]
		del self.items[0:self.LINES-1]
		for i in range(0, len(self.current)):
			draw.text((0, i*self.LINE_HEIGHT), str(i+1)+':'+self.current[i], font=font, fill='#FFFFFF' )
		i = i + 1
		if len(self.items) == 0:
			draw.text((0,i*self.LINE_HEIGHT), '0:中止', font=font, fill='#FFFFFF' )
		else:
			draw.text((0,i*self.LINE_HEIGHT), '0:次へ', font=font, fill='#FFFFFF' )
		return
		
	def receiveMessage(self, message):
		# リスト取得
		if message.getMessage() == Message.MPC_REPLY:
			if message.getParam()['type'] == 'playlists':
				self.playlists = message.getParam()['list']
			elif message.getParam()['type'] == 'artist':
				self.artists = message.getParam()['list']
			elif message.getParam()['type'] == 'album':
				self.albums = message.getParam()['list']
			return True
		
		if message.getMessage() == Message.PLAYLIST:
			if not self.active:
				self.type = message.getParam()
				if self.type == 'playlists':
					self.items = self.playlists
				elif self.type == 'artist':
					self.items = self.artists
				elif self.type == 'album':
					self.items = self.albums
				
				image = Image.new('RGB', (LCD.WIDTH, LCD.HEIGHT), 0)
				font = ImageFont.truetype(DEFAULT_FONT, 14, encoding="unic");
				draw = ImageDraw.Draw(image)
				# プレイリストが空
				if len(self.items) == 0:
					draw.text((0,64), 'プレイリストが', font=font, fill='#FF0000')
					draw.text((0,80), '　ありません', font=font, fill='#FF0000')
					item = LCDItem(image, time=2)
					self.sendMessage(Message(self, Message.DISPLAY, item))
					self.sendMessage(Message(self, Message.MENUOFF, None ))
					return False
				else:
					# 新規メニュー描画
					self.makeMenu(draw, font)
					item = LCDItem(image)
					self.playermain.lcd.displayItem(item, lock=True)
					self.active = True
				
				return False
			return False
		# リモコン
		if message.getMessage() == Message.RCONTROL and self.active:
			# 数字ボタン
			if message.getParam() in '0123456789':
				btn = int(message.getParam()) - 1
				if btn < 0:
					if len(self.items) == 0:
						# 終了
						self.active = False
						self.sendMessage(Message(self, Message.MENUOFF, None ))
						self.playermain.lcd.release()
					else:
						# 次ページ
						image = Image.new('RGB', (LCD.WIDTH, LCD.HEIGHT), 0)
						font = ImageFont.truetype(DEFAULT_FONT, 14, encoding="unic");
						draw = ImageDraw.Draw(image)
						self.makeMenu(draw, font)
						item = LCDItem(image)
						self.playermain.lcd.release()
						self.playermain.lcd.displayItem(item, lock=True)
						self.active = True
					return False
				elif btn < len(self.current):
					if self.type == 'playlists':
						self.sendMessage(Message(self, Message.MPC, {'command': 'load', 'arg': self.current[btn]}))
					else:
						param = {'command':'findadd', 'arg': {'type':self.type,'value': self.current[btn]}}
						msg = Message(self, Message.MPC, param)
						self.sendMessage(msg)
					self.playermain.lcd.release()
					self.sendMessage(Message(self, Message.MENUOFF, None ))
					self.active = False
					return True
				return True
			# メインメニューに戻る
			elif message.getParam() == 'menu':
				self.playermain.lcd.release()
				self.active = False
			
			return True
		return True


# MainMenu Worker
class MainMenu(Worker):
	
	active = False
	playermain = None # type: Master
	status = []
	playlists = []
	
	def __init__(self, pm):
		# type: (Object, Master)
		super().__init__(pm)
		self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'playlists' } ))
	
	def receiveMessage(self,message):
		# MPD Message
		if message.getMessage() == Message.MPD:
			param = message.getParam()
			self.status = param['status']
			return True
		
		if message.getMessage() == Message.MPC_REPLY:
			if message.getParam()['type'] == 'playlists':
				self.playlists = message.getParam()['list']
			return True
		
		# リモコン以外は無視
		if message.getMessage() != Message.RCONTROL:
			return True
		
		# Remote Control Message
		if message.getParam() == 'menu':
			# おそらくありえない
			if len(self.status) == 0:
				return True
			
			# アクティブなら閉じる
			if self.active:
				self.active = False
				self.playermain.lcd.release()
				self.sendMessage(Message(self, Message.MENUOFF, None ))
				return True
			
			self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'playlists'} ))
			self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'album' } ))
			self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'artist' } ))
			# メニュー描画
			image = Image.new('RGB', (LCD.WIDTH, LCD.HEIGHT), 0)
			font = ImageFont.truetype(DEFAULT_FONT, 14, encoding="unic");
			draw = ImageDraw.Draw(image)
			if self.status['random'] == '1':
				draw.text((0,0),'1:ノーマル再生', font=font,fill='#FFFFFF')
			else:
				draw.text((0,0),'1:ランダム再生', font=font,fill='#FFFFFF')
				
			if self.status['repeat'] == '1':
				draw.text((0,16),'2:リピートしない', font=font,fill='#FFFFFF')
			else:
				draw.text((0,16),'2:リピート再生', font=font,fill='#FFFFFF')
			
			draw.text((0,32 ), '3:現在の曲を外す', font=font,fill='#FFFFFF')
			draw.text((0,48 ), '4:プレイリスト保存', font=font,fill='#FFFFFF')

			draw.text((0,64 ), '5:全曲再生',     font=font,fill='#FFFFFF')
			draw.text((0,80 ), '6:プレイリスト読込', font=font,fill='#FFFFFF')
			
			draw.text((0,96 ), '7:アルバム選択',   font=font,fill='#FFFFFF')
			draw.text((0,112), '8:アーティスト選択', font=font,fill='#FFFFFF')
			
			draw.text((0,128), '9:DBアップデート',  font=font,fill='#FFFFFF')
			
#			self.sendMessage(Message(self, Message.MENUON, None ))
			item = LCDItem(image, pos=LCDItem.FULL)
			self.playermain.lcd.displayItem(item,lock=True)
			self.active = True
			return True
		
		# アクティブかつリモコンが押された
		if self.active:
			c = message.getParam()
			if c in '0123456789':
				if c == '1': # random
					arg = 'on'
					if self.status['random'] == '1':
						arg = 'off'
					self.sendMessage(Message(self, Message.MPC, {'command':'random', 'arg': arg} ))
					self.active = False
					self.sendMessage(Message(self, Message.MENUOFF, None ))
					
				elif c == '2': # repeat
					arg = 'on'
					if self.status['repeat'] == '1':
						arg = 'off'
					self.sendMessage(Message(self, Message.MPC, {'command':'repeat', 'arg': arg} ))
					self.active = False
					self.sendMessage(Message(self, Message.MENUOFF, None ))
				
				elif c == '3': # delete
					self.sendMessage(Message(self, Message.MPC, {'command':'delete', 'arg': None} ))
					self.active = False
					self.sendMessage(Message(self, Message.MENUOFF, None ))
			
				elif c == '4': # save
					for i in range(0,100):
						if not (('playlist'+str(i)) in self.playlists):
							break
					self.sendMessage(Message(self, Message.MPC, {'command':'save', 'arg': 'playlist'+str(i)}))
					self.active = False
					self.sendMessage(Message(self, Message.MENUOFF, None ))
			
				elif c == '5': # play all
					self.sendMessage(Message(self, Message.MPC, {'command':'playall', 'arg': None} ))
					self.active = False
					self.sendMessage(Message(self, Message.MENUOFF, None ))
				
				elif c == '6': # playlist
					self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'playlists' } ))
					self.sendMessage(Message(self, Message.PLAYLIST, 'playlists' ))
					self.active = False
					
				elif c == '7': # album
					self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'album' } ))
					self.sendMessage(Message(self, Message.PLAYLIST, 'album' ))
					self.active = False
			
				elif c == '8': # artist
					self.sendMessage(Message(self, Message.MPC, {'command':'list', 'arg': 'artist' } ))
					self.sendMessage(Message(self, Message.PLAYLIST, 'artist' ))
					self.active = False
				
				elif c == '9':   # db update
					self.sendMessage(Message(self, Message.MPC, {'command':'update', 'arg': None} ))
					self.active = False
					self.sendMessage(Message(self, Message.MENUOFF, None ))
			if self.active == False:
				self.playermain.lcd.release()
				return False
			return True
		return True


# Volume Control Worker
class VolumeControl(Worker):
	
	MAX_VALUE = 81 # 81% == 0dB
	enabled = True
	term = False
	value = 100
	
	mute = False
	
	def __init__(self, pm):
		super().__init__(pm)
		
		# read initial value
		if os.path.exists(VOLUME_FILE):
			with open(VOLUME_FILE, "r") as f:
				try:
					self.value = int(f.read())
				except Exception as e:
					pass
		
		try:
			self.mixer = Mixer('Digital')
		except Exception as e:
			print(e, file=self.playermain.out)
			self.enabled = False
		
		if self.enabled:
			self.mixer.setvolume(int((self.MAX_VALUE *self.value)/100))
			self.mixer.setmute(self.mute)
		
	def receiveMessage(self,message):
		if message.getMessage() == Message.RCONTROL:
			# enabled ?
			if not self.enabled:
				return True
			if message.getParam() == 'volup':
				self.value = self.value + 2
				if self.value > 100:
					self.value = 100
			elif message.getParam() == 'voldown':
				self.value = self.value - 2
				if self.value < 0:
					self.value = 0
			elif message.getParam() == 'mute':
				self.mute = not(self.mute)
				self.mixer.setmute(self.mute)
				self.sendMessage(Message(self, Message.VOLUME, {'type':'mute', 'value': self.mute}))

			if message.getParam() == 'volup' or message.getParam() == 'voldown':
				self.mixer.setvolume(int((self.MAX_VALUE*self.value)/100))
				self.sendMessage(Message(self, Message.VOLUME, {'type':'volume', 'value': self.value}))
		# Terminate
		elif message.getMessage() == Message.TERM:
			try:
				with open(VOLUME_FILE, "w") as f:
					f.write(str(self.value))
			except Exception  as e:
				pass
		
		return True

# LCD Worker
class LCD(Worker, threading.Thread):
	term = False
	
	HEIGHT = LCD_HEIGHT
	WIDTH = LCD_WIDTH
	
	BOTTOM_HEIGHT = 12
	INDICATE_HEIGHT = 10
	
	term = False
	
	def __init__(self, pm):
		threading.Thread.__init__(self)
		Worker.__init__(self,pm)
	
		self.spi = SPI.SpiDev(SPI_PORT, SPI_DEVICE,max_speed_hz=SPEED_HZ)
		self.disp = TFT.ST7735(DC, rst=RST, spi=self.spi)
		self.disp.begin()
		self.disp.clear((0,0,0));
		if os.path.exists(LOGO_FILE):
			image = Image.open(LOGO_FILE)
			self.disp.buffer.paste(image)
		self.disp.display()
		self.messageq = castQueue(5)
		self.semaphore = BoundedSemaphore()
	
	def receiveMessage(self, message):
		if message.getMessage() == Message.DISPLAY:
			self.messageq.put(message.getParam())
			return False
		elif message.getMessage() == Message.TERM:
			self.term = True
		return True
		
	def release(self):
		try:
			self.semaphore.release()
		except Exception as e:
			print(e, file=self.playermain.out)
		
	def displayItem(self, item, lock=False):
		self.semaphore.acquire()
		try:
			# 画面全体に貼り付け
			if item.getPos() == LCDItem.FULL:
				if item.getClear():
					self.disp.clear((0,0,0))
				if item.getImage() is not None:
					self.disp.buffer.paste(item.getImage())
				self.disp.display()
			else:
				left = 0
				upper = 0
				item_width = item.getWidth()
				item_height = item.getHeight()
				image = item.getImage()
				# サイズ制限
				if item.getWidth() != self.WIDTH:
					scale = float(float(self.WIDTH)/float(item.getWidth()))
					image = item.getImage().resize((int(item_width * scale), int(item_height*scale)), Image.BILINEAR)
				if image.size[1] > self.HEIGHT:
					image = image.crop( box=(0,0,self.WIDTH, self.HEIGHT) )
				
				# Display TOP
				if item.getPos() == LCDItem.TOP:
					self.disp.display(image, x0=left, y0=upper, x1=self.WIDTH-1, y1=image.size[1]-1 )
			
				# Display Bottom
				elif item.getPos() == LCDItem.BOTTOM:
					if image.size[1] > self.BOTTOM_HEIGHT:
						image = image.crop( box=(0, 0, self.WIDTH, self.BOTTOM_HEIGHT) )
					self.disp.display(image, x0=left, y0 = self.HEIGHT-self.BOTTOM_HEIGHT-1, x1=self.WIDTH-1, y1=self.HEIGHT-1 )
			
				# Display Indicator
				elif item.getPos() == LCDItem.INDICATE:
					if image.size[1] > self.INDICATE_HEIGHT:
						image = image.crop( box=(0, 0, self.WIDTH, self.INDICATE_HEIGHT) )
					self.disp.display(image, x0=left, y0 = self.HEIGHT-self.BOTTOM_HEIGHT-self.INDICATE_HEIGHT-1, x1=self.WIDTH-1, y1=self.HEIGHT-self.BOTTOM_HEIGHT-1 )
			
			if item.getTime() != 0:
				sleep(item.getTime())
		except Exception as e:		# 何かエラーが起きたら無条件で開放
			print(e, file=self.playermain.out)
			self.release()
			return
			
		if lock == False:
			self.release()
		return
	
	def run(self):
		while self.term == False:
			try:
				# LCDItem
				item = self.messageq.get_nowait()
				self.displayItem(item)
			except queue.Empty:
				sleep(0.05)
		
		return True

# MPD state watch worker
class MPD(Worker, threading.Thread):
	
	term = False
	
	def __init__(self, pm):
		threading.Thread.__init__(self)
		Worker.__init__(self,pm)
		
		try:
			self.mpc = MPDClient(use_unicode=True)
			self.mpc.connect( MPD_HOST, MPD_PORT );
		except SocketError as e:
			print(e, file=self.playermain.out);
			return
		
		self.config = self.mpc.config()
		current = self.mpc.currentsong()
		status  = self.mpc.status()
		self.param = {'changes':None, 'current': current, 'status': status, 'config': self.config }
		
	def receiveMessage(self,message):
		if message.getMessage() == Message.TERM:
			self.term = True
		elif message.getMessage() == Message.MENUOFF:
			self.sendMessage()
		
		return True
	
	def sendMessage(self):
		super().sendMessage(Message(self, Message.MPD, self.param))
		return
	
	def run(self):
		# 現状レポート
		current = self.mpc.currentsong()
		status  = self.mpc.status()
		self.param = {'changes':None, 'current': current, 'status': status, 'config': self.config }
		self.sendMessage()
		
		self.mpc.send_idle()
		while self.term == False:
			canRead = select([self.mpc], [], [], 0)[0]
			if canRead:
				changes = self.mpc.fetch_idle()
				current = self.mpc.currentsong()
				status  = self.mpc.status()
				self.param = {'changes': changes, 'current': current, 'status': status, 'config': self.config }
				self.sendMessage()
				self.mpc.send_idle()
			sleep(0.1)
		# idle中にCloseすると怒られる
		# self.mpc.close()
		return

# Album art worker
class AlbumArt(Worker, threading.Thread):
	TEMP_DIR = '/var/tmp/.superdac.aa'

	term = False
	refresh = False
	prev_path = 'foobar'
	term = False
	
	def __init__(self, pm):
		threading.Thread.__init__(self)
		Worker.__init__(self,pm)
		self.messageq = queue.Queue()
	
	def getAlbumArt(self, config, current):
		param = config.split('/')
		if param[0] == 'smb:':
			# SMB
			musicfile = (current['file']).split('/')
			remote_host = param[2]
			share_name  = param[3]
			
			remote_path = '/'
			for r in param[4:]:
				remote_path = remote_path + r + '/'
			for r in musicfile[0:len(musicfile)-1]:
				remote_path = remote_path + r + '/'
			
			try:
				nmb = NetBIOS()
				remote_ip = nmb.queryName(remote_host)[0]
				if remote_ip is None: # 名前が引けない
					return None
				
				con = SMBConnection('','',platform.uname().node, remote_host)
				con.connect(remote_ip)
				items = con.listPath(share_name, remote_path)
				files = [item.filename for item in items]
				aafile = ''
				if 'Folder.jpg' in files:
					aafile = remote_path + 'Folder.jpg'
				elif 'folder.jpg' in files:
					aafile = remote_Path + 'folder.jpg'
				elif 'AlbumArt.jpg' in files:
					aafile = remote_path + 'AlbumArt.jpg'
				elif 'AlbumArtSmall.jpg' in files:
					aafile = remote_path + 'AlbumArtSmall.jpg'
				else:
					con.close()
					return None
				
				if not os.path.exists(self.TEMP_DIR):
					os.mkdir(self.TEMP_DIR)
				
				with open( self.TEMP_DIR+'/aa.jpg', 'wb') as f:
					con.retrieveFile(share_name, aafile, f)
				
				con.close()
			except Exception as e:
				print(e, file=self.playermain.out)
				return None
			return self.TEMP_DIR+'/aa.jpg'
		else:
			path = config + '/' + os.path.dirname(current['file'])
			imgfile = None
			if os.path.exists( path+'/Folder.jpg'):
				imgfile = path + '/Folder.jpg'
			elif os.path.exists(path + '/folder.jpg'):
				imgfile = path + '/folder.jpg'
			elif  os.path.exists(path + '/AlbumArt.jpg'):
				imgfile = path + '/AlbumArt.jpg'
			elif  os.path.exists(path + '/AlbumArtSmall.jpg'):
				imgfile = path + '/AlbumArtSmall.jpg'
			return imgfile
		return None
	
	def draw(self, param):
		status  = param['status']
		current = param['current']
		config  = param['config']
			
		imgfile = None
		if 'file' in current:
			path = config + '/' + os.path.dirname(current['file'])
			# Album change
			if path != self.prev_path:
				self.prev_path = path
				imgfile = self.getAlbumArt(config, current)
				# アルバムアートがなければロゴ
				if imgfile is None:
					if os.path.exists(LOGO_FILE):
						imgfile = LOGO_FILE
		else: # 停止中かなにか
			if imgfile is None:
				if os.path.exists(LOGO_FILE):
					imgfile = LOGO_FILE
		
		# Display AlbumArt
		if imgfile is not None:
			# LCD clear
			param = LCDItem(None, clear=True)
			msg = Message(self,Message.DISPLAY, param)
			self.sendMessage(msg)
			#
			image = Image.open(imgfile)
			param = LCDItem(image, pos=LCDItem.TOP)
			msg = Message(self, Message.DISPLAY, param)
			self.sendMessage(msg)
			# インジケータ再描画
			self.sendMessage(Message(self, Message.INDICATOR, None))
		
		# Display Title
		if 'title' in current:
			title = current['title']
			jpfont = ImageFont.truetype(DEFAULT_FONT, LCD.BOTTOM_HEIGHT, encoding="unic");
			image = Image.new('RGB', (LCD.WIDTH, LCD.BOTTOM_HEIGHT), 0)
			draw = ImageDraw.Draw(image)
			draw.text((0,0) , title, font=jpfont, fill='#FFFFFF')
			param = LCDItem(image, pos=LCDItem.BOTTOM)
			msg = Message(self, Message.DISPLAY, param)
			self.sendMessage(msg)
		return
	
	def receiveMessage(self,message):
		if message.getMessage() == Message.MENUOFF:
			self.prev_path = ''		# メニューが閉じたらアルバムアートをクリア
		elif message.getMessage() == Message.MPD:
			self.messageq.put(message.getParam())
		elif message.getMessage() == Message.TERM:
			self.term = True
		return True
	
	def run(self):
		while self.term == False:
			try:
				param = self.messageq.get_nowait()
				self.draw(param)
			except queue.Empty:
				sleep(0.05)
		return
			

# Indicator worker
class Indicator(Worker, threading.Thread):
	
	status = {'state': 'stop'}
	term = False
	mute = False
	
	def __init__(self, pm):
		threading.Thread.__init__(self)
		Worker.__init__(self, pm)
		
		self.messageq = queue.Queue()
		self.timer = SDTimer(5, self.refresh)
		
	def refresh(self):
		jpfont = ImageFont.truetype(DEFAULT_FONT, LCD.INDICATE_HEIGHT, encoding="unic");
		image = Image.new('RGB', (LCD.WIDTH, LCD.INDICATE_HEIGHT), 0)
		draw = ImageDraw.Draw(image)
		str = ''
		if self.mute:
			str = 'Mute....'
		else:
			if self.status['state'] == 'stop':
				str = 'Stop'
			elif self.status['state'] == 'pause':	
				str = 'Pause'
			else:
				if self.status['random'] == '1':
					str = str + 'Random'
				else:
					str = str + 'Normal'
				if self.status['repeat'] == '1':
					str = str + '/Repeat'
				str = str + '/'+ self.status['bitrate'] + 'kbps'
			
		draw.text((0,0) , str, font=jpfont, fill='#00BFFF')
		param = LCDItem(image, pos=LCDItem.INDICATE)
		msg = Message(self, Message.DISPLAY, param)
		self.sendMessage(msg)
		return
	
	def volumeBar(self, value):
		jpfont = ImageFont.truetype(DEFAULT_FONT, LCD.INDICATE_HEIGHT, encoding="unic");
		image = Image.new('RGB', (LCD.WIDTH, LCD.INDICATE_HEIGHT), 0)
		draw = ImageDraw.Draw(image)
		draw.text((0,0) ,'Vol:', font=jpfont, fill='#7CFC00')
		bar_length = int(((LCD.WIDTH - 30) * value) / 100)
		draw.rectangle((30, 0, bar_length+30, LCD.INDICATE_HEIGHT), fill=(124, 252, 0))
		msgparam = LCDItem(image, pos=LCDItem.INDICATE)
		self.sendMessage(Message(self, Message.DISPLAY, msgparam))
		return
		
	def receiveMessage(self, message):
		if message.getMessage() == Message.MENUOFF:
			pass
#			self.messageq.put(Message(None, Message.INDICATOR, None))
		elif message.getMessage() == Message.INDICATOR:
			self.messageq.put(message)
		elif message.getMessage() == Message.MPD:
			self.status = message.getParam()['status']
			self.messageq.put(Message(None, Message.INDICATOR, None))
		elif message.getMessage() == Message.VOLUME:
			self.messageq.put(message)
		elif message.getMessage() == Message.TERM:
			self.term = True
		return True
	
	def run(self):
		while self.term == False:
			try:
				message = self.messageq.get_nowait()
				if message.getMessage() == Message.VOLUME:
					param = message.getParam()
					if param['type'] == 'volume':
						self.volumeBar(int(param['value']))
						if self.timer.getActive():
							self.timer.setRemaining(5)
						else:
							self.timer = SDTimer(5, self.refresh)
							self.timer.start()
					elif param['type'] == 'mute':
						self.mute = param['value']
						self.refresh()
				elif message.getMessage() == Message.INDICATOR:
					self.refresh()
			except queue.Empty:
				sleep(0.05)
		if self.timer.getActive():
			self.timer.cancel()
		return



# MPD Client worker
class MPC(Worker, threading.Thread):
	term = False
	
	def __init__(self, pm):
		threading.Thread.__init__(self)
		Worker.__init__(self, pm)
		
		self.messageq = queue.Queue()
		self.semaphore = BoundedSemaphore()
				
	def receiveMessage(self, message):
		if message.getMessage() == Message.RCONTROL:
			param = {'command': message.getParam(), 'arg': None }
			self.messageq.put(param)
		elif message.getMessage() == Message.MPC:
			self.messageq.put(message.getParam())
		elif message.getMessage() == Message.TERM:
			self.term = True
		return True
	
	def execute(self, param):
		self.semaphore.acquire()
		try:
			mpc = MPDClient(use_unicode=True)
			mpc.connect(MPD_HOST, MPD_PORT)
		except Exception as e:
			print(e, file=self.playermain.out)
			self.semaphore.release()
			return
		
		try:
			if param['command'] == 'playall':
				mpc.stop()
				mpc.clear()
				songs = mpc.list('file')
				for song in songs:
					mpc.add(song)
				mpc.play()
				
			elif param['command'] == 'random':
				if param['arg'] == 'on':
					mpc.random(1)
				else:
					mpc.random(0)
					
			elif param['command'] == 'repeat':
				if param['arg'] == 'on':
					mpc.repeat(1)
				else:
					mpc.repeat(0)
						
			elif param['command'] == 'update':
				image = Image.new('RGB', (LCD.WIDTH, LCD.HEIGHT), 0)
				font = ImageFont.truetype(DEFAULT_FONT, 14, encoding="unic");
				draw = ImageDraw.Draw(image)
				draw.text((0,64), 'DB更新中....', font=font, fill='#FF0000')
				draw.text((0,80), 'お待ち下さい', font=font, fill='#FF0000')
				item = LCDItem(image)
				self.playermain.lcd.displayItem(item, lock=True)
				jobno = mpc.update()
				while 'updating_db' in mpc.status():
					if mpc.status()['updating_db'] != jobno:
						break
					sleep(0.1)
				self.playermain.lcd.release()
					
			elif param['command'] == 'load':
				mpc.stop()
				mpc.clear()
				mpc.load(param['arg'])
				mpc.play()
			
			elif param['command'] == 'list':
				list = []
				if param['arg'] == 'playlists':
					playlists = mpc.listplaylists()
					for p in playlists:
						list.append(p['playlist'])
				elif param['arg'] == 'artist':
					list = mpc.list('artist')
				elif param['arg'] == 'album':
					list = mpc.list('album')
				self.sendMessage(Message(self, Message.MPC_REPLY, { 'type': param['arg'], 'list': list }))
		
			elif param['command'] == 'findadd':
				mpc.stop()
				mpc.clear()
				mpc.findadd(param['arg']['type'], param['arg']['value'])
				mpc.play()
				
			elif param['command'] == 'delete':
				status = mpc.status()
				if 'songid' in status:
					mpc.deleteid(status['songid'])
					
			elif param['command'] == 'save':
				mpc.save(param['arg'])
				
			elif param['command'] == 'play':
				mpc.play()
				
			elif param['command'] == 'stop':
				mpc.stop()
			
			elif param['command'] == 'pause':
				mpc.pause()
				
			elif param['command'] == 'clear':
				mpc.clear()
						
			elif param['command'] == 'next':
				mpc.next()
			
			elif param['command'] == 'prev':
				mpc.previous()
			#
		except Exception as e:
			print(e, file=self.playermain.out)
		
		mpc.close()
		self.semaphore.release()
		return
	
	def run(self):
		while self.term == False:
			try:
				param = self.messageq.get_nowait()
				self.execute(param)
			except queue.Empty:
				sleep(0.05)
		
		return

		


# lirc remote control worker
class Remote(Worker, threading.Thread):

	def __init__(self, pm):
		threading.Thread.__init__(self)
		Worker.__init__(self, pm)
		
		lircrc = None
		for f in LIRCRC:
			if os.path.exists(f):
				lircrc = f
				break
		if lircrc is None:
			raise Exception('lircrc not found')
		
		self.sockid = lirc.init("superdac", lircrc, blocking=False)
		self.term = False
		
	def receiveMessage(self, message):
		if message.getMessage() == Message.TERM:
			self.term = True
		return True
		
	def run(self):
		while self.term == False:
			code = lirc.nextcode()
			if len(code) == 0:
				sleep(0.1)
				continue
			message = Message(self, Message.RCONTROL, code[0])
			self.sendMessage(message)
		
		lirc.deinit()
		return


# デーモンの終了フラグ
Terminate = False
noDaemon = False

class PlayerMain(Master, threading.Thread):
	global Terminate
	global noDaemon
	
	workers = []	# type: Worker[]
	out = None
	
	def __init__(self, err):
		super().__init__()
		self.out = err
		self.messageq = queue.Queue()
	
	# Message Queuing
	def postMessage(self, message):
		if noDaemon:
			print(message.getMessage() , file=self.out)
			print(message.getParam() , file=self.out)
		self.messageq.put(message)
		return
	
	def run(self):
		# 
		# MPD status watcher
		mi = None
		try:
			mi = MPD(self)
		except Exception as e:
			# MPDが動いていない
			print(e, file=self.out)
			return
		mi.setDaemon(True)
		mi.start()
		self.workers.append(mi)
		
		# LCD
		self.lcd = LCD(self)
		self.lcd.setDaemon(True)
		self.lcd.start()
		self.workers.append(self.lcd)
		
		# AlbumArt
		aa = AlbumArt(self)
		aa.setDaemon(True)
		aa.start()
		self.workers.append(aa)
		
		# リモコン
		try:
			remocon = Remote(self)
			remocon.setDaemon(True)
			remocon.start()
			self.workers.append(remocon)
		except Exception as e:
			print(e, file=self.out)
		
		# VolumeControl
		vo = VolumeControl(self)
		self.workers.append(vo)
		
		# MPC
		self.mpc = MPC(self)
		self.mpc.setDaemon(True)
		self.mpc.start()
		self.workers.append(self.mpc)
		
		# Indicator
		id = Indicator(self)
		id.setDaemon(True)
		id.start()
		self.workers.append(id)
		
		# Switches
		sw = Switches(self)
		self.workers.append(sw)
		
		# Playlist
		ps = Playlist(self)
		self.workers.append(ps)
		
		# MainMenu
		mm = MainMenu(self)
		self.workers.append(mm)
		
		
		#
		# イベントループ
		#
		while Terminate == False:
			try:
				msg = self.messageq.get_nowait()
				# イベント送出
				for w in self.workers:
					if type(msg.getSender()) != type(w):
						if w.receiveMessage(msg) == False:
							break
			
			except queue.Empty:
				sleep(0.05)
		
		# 終了
		for w in self.workers:
			w.receiveMessage(Message(self, Message.TERM, None))
			
		self.out.close()
		return
		

def main_loop():
	global noDaemon
	
	logfile = sys.stdout
	if not noDaemon:
		try:
			logfile = open(LOGFILE, 'w')
		except Exception as e:
			logfile = sys.stdout
	
	p = PlayerMain(logfile)
	p.setDaemon(False)
	p.start()
	p.join(None)
	
def signal_handler(signal, handler):
	global Terminate
	global noDaemon
	
	Terminate = True
	if not noDaemon:
		os.remove(PIDFILE)

def daemonize():
	pid = os.fork()
	if pid > 0:
		pidf = open(PIDFILE, 'w')
		pidf.write(str(pid)+"\n")
		pidf.close()
		sys.exit()
	
	if pid == 0:
		signal.signal(signal.SIGINT, signal_handler)
		signal.signal(signal.SIGTERM, signal_handler)
		main_loop()
        
# Script starts here
if __name__ == "__main__":

	argv = sys.argv
	if len(argv) > 1:
		if argv[1] == '--nodaemon':
			noDaemon = True
			signal.signal(signal.SIGINT, signal_handler)
			signal.signal(signal.SIGTERM, signal_handler)
			main_loop()
	else:
		daemonize()